[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * tiny vi.c: A small 'vi' clone
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| 4 | * Copyright (C) 2000, 2001 Sterling Huxley <sterling@europa.com>
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| 5 | *
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| 6 | * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
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| 7 | */
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| 8 |
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| 9 | /*
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| 10 | * Things To Do:
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| 11 | * EXINIT
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| 12 | * $HOME/.exrc and ./.exrc
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| 13 | * add magic to search /foo.*bar
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| 14 | * add :help command
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| 15 | * :map macros
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| 16 | * how about mode lines: vi: set sw=8 ts=8:
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| 17 | * if mark[] values were line numbers rather than pointers
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| 18 | * it would be easier to change the mark when add/delete lines
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| 19 | * More intelligence in refresh()
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| 20 | * ":r !cmd" and "!cmd" to filter text through an external command
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| 21 | * A true "undo" facility
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| 22 | * An "ex" line oriented mode- maybe using "cmdedit"
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| 23 | */
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| 24 |
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| 25 |
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| 26 | #include "busybox.h"
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| 27 | #include <string.h>
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| 28 | #include <strings.h>
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| 29 | #include <unistd.h>
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| 30 | #include <sys/ioctl.h>
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| 31 | #include <time.h>
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| 32 | #include <fcntl.h>
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| 33 | #include <signal.h>
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| 34 | #include <setjmp.h>
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| 35 | #include <regex.h>
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| 36 | #include <ctype.h>
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| 37 | #include <errno.h>
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| 38 | #define vi_Version BB_VER " " BB_BT
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| 39 |
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| 40 | #ifdef CONFIG_LOCALE_SUPPORT
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| 41 | #define Isprint(c) isprint((c))
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| 42 | #else
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| 43 | #define Isprint(c) ( (c) >= ' ' && (c) != 127 && (c) != ((unsigned char)'\233') )
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| 44 | #endif
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| 45 |
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| 46 | #define MAX_SCR_COLS BUFSIZ
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| 47 |
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| 48 | // Misc. non-Ascii keys that report an escape sequence
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| 49 | #define VI_K_UP 128 // cursor key Up
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| 50 | #define VI_K_DOWN 129 // cursor key Down
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| 51 | #define VI_K_RIGHT 130 // Cursor Key Right
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| 52 | #define VI_K_LEFT 131 // cursor key Left
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| 53 | #define VI_K_HOME 132 // Cursor Key Home
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| 54 | #define VI_K_END 133 // Cursor Key End
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| 55 | #define VI_K_INSERT 134 // Cursor Key Insert
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| 56 | #define VI_K_PAGEUP 135 // Cursor Key Page Up
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| 57 | #define VI_K_PAGEDOWN 136 // Cursor Key Page Down
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| 58 | #define VI_K_FUN1 137 // Function Key F1
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| 59 | #define VI_K_FUN2 138 // Function Key F2
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| 60 | #define VI_K_FUN3 139 // Function Key F3
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| 61 | #define VI_K_FUN4 140 // Function Key F4
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| 62 | #define VI_K_FUN5 141 // Function Key F5
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| 63 | #define VI_K_FUN6 142 // Function Key F6
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| 64 | #define VI_K_FUN7 143 // Function Key F7
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| 65 | #define VI_K_FUN8 144 // Function Key F8
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| 66 | #define VI_K_FUN9 145 // Function Key F9
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| 67 | #define VI_K_FUN10 146 // Function Key F10
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| 68 | #define VI_K_FUN11 147 // Function Key F11
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| 69 | #define VI_K_FUN12 148 // Function Key F12
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| 70 |
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| 71 | /* vt102 typical ESC sequence */
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| 72 | /* terminal standout start/normal ESC sequence */
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| 73 | static const char SOs[] = "\033[7m";
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| 74 | static const char SOn[] = "\033[0m";
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| 75 | /* terminal bell sequence */
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| 76 | static const char bell[] = "\007";
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| 77 | /* Clear-end-of-line and Clear-end-of-screen ESC sequence */
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| 78 | static const char Ceol[] = "\033[0K";
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| 79 | static const char Ceos [] = "\033[0J";
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| 80 | /* Cursor motion arbitrary destination ESC sequence */
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| 81 | static const char CMrc[] = "\033[%d;%dH";
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| 82 | /* Cursor motion up and down ESC sequence */
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| 83 | static const char CMup[] = "\033[A";
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| 84 | static const char CMdown[] = "\n";
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| 85 |
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| 86 |
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| 87 | enum {
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| 88 | YANKONLY = FALSE,
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| 89 | YANKDEL = TRUE,
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| 90 | FORWARD = 1, // code depends on "1" for array index
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| 91 | BACK = -1, // code depends on "-1" for array index
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| 92 | LIMITED = 0, // how much of text[] in char_search
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| 93 | FULL = 1, // how much of text[] in char_search
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| 94 |
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| 95 | S_BEFORE_WS = 1, // used in skip_thing() for moving "dot"
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| 96 | S_TO_WS = 2, // used in skip_thing() for moving "dot"
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| 97 | S_OVER_WS = 3, // used in skip_thing() for moving "dot"
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| 98 | S_END_PUNCT = 4, // used in skip_thing() for moving "dot"
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| 99 | S_END_ALNUM = 5 // used in skip_thing() for moving "dot"
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| 100 | };
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| 101 |
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| 102 | typedef unsigned char Byte;
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| 103 |
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| 104 | static int vi_setops;
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| 105 | #define VI_AUTOINDENT 1
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| 106 | #define VI_SHOWMATCH 2
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| 107 | #define VI_IGNORECASE 4
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| 108 | #define VI_ERR_METHOD 8
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| 109 | #define autoindent (vi_setops & VI_AUTOINDENT)
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| 110 | #define showmatch (vi_setops & VI_SHOWMATCH )
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| 111 | #define ignorecase (vi_setops & VI_IGNORECASE)
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| 112 | /* indicate error with beep or flash */
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| 113 | #define err_method (vi_setops & VI_ERR_METHOD)
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| 114 |
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| 115 |
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| 116 | static int editing; // >0 while we are editing a file
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| 117 | static int cmd_mode; // 0=command 1=insert 2=replace
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| 118 | static int file_modified; // buffer contents changed
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| 119 | static int last_file_modified = -1;
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| 120 | static int fn_start; // index of first cmd line file name
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| 121 | static int save_argc; // how many file names on cmd line
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| 122 | static int cmdcnt; // repetition count
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| 123 | static fd_set rfds; // use select() for small sleeps
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| 124 | static struct timeval tv; // use select() for small sleeps
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| 125 | static int rows, columns; // the terminal screen is this size
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| 126 | static int crow, ccol, offset; // cursor is on Crow x Ccol with Horz Ofset
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| 127 | static Byte *status_buffer; // mesages to the user
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| 128 | #define STATUS_BUFFER_LEN 200
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| 129 | static int have_status_msg; // is default edit status needed?
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| 130 | static int last_status_cksum; // hash of current status line
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| 131 | static Byte *cfn; // previous, current, and next file name
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| 132 | static Byte *text, *end, *textend; // pointers to the user data in memory
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| 133 | static Byte *screen; // pointer to the virtual screen buffer
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| 134 | static int screensize; // and its size
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| 135 | static Byte *screenbegin; // index into text[], of top line on the screen
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| 136 | static Byte *dot; // where all the action takes place
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| 137 | static int tabstop;
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| 138 | static struct termios term_orig, term_vi; // remember what the cooked mode was
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| 139 | static Byte erase_char; // the users erase character
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| 140 | static Byte last_input_char; // last char read from user
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| 141 | static Byte last_forward_char; // last char searched for with 'f'
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| 142 |
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| 143 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR
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| 144 | static int last_row; // where the cursor was last moved to
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| 145 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
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| 146 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS
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| 147 | static jmp_buf restart; // catch_sig()
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| 148 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */
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| 149 | #if defined(CONFIG_FEATURE_VI_USE_SIGNALS) || defined(CONFIG_FEATURE_VI_CRASHME)
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| 150 | static int my_pid;
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| 151 | #endif
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| 152 | #ifdef CONFIG_FEATURE_VI_DOT_CMD
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| 153 | static int adding2q; // are we currently adding user input to q
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| 154 | static Byte *last_modifying_cmd; // last modifying cmd for "."
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| 155 | static Byte *ioq, *ioq_start; // pointer to string for get_one_char to "read"
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| 156 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */
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| 157 | #if defined(CONFIG_FEATURE_VI_DOT_CMD) || defined(CONFIG_FEATURE_VI_YANKMARK)
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| 158 | static Byte *modifying_cmds; // cmds that modify text[]
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| 159 | #endif /* CONFIG_FEATURE_VI_DOT_CMD || CONFIG_FEATURE_VI_YANKMARK */
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| 160 | #ifdef CONFIG_FEATURE_VI_READONLY
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| 161 | static int vi_readonly, readonly;
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| 162 | #endif /* CONFIG_FEATURE_VI_READONLY */
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| 163 | #ifdef CONFIG_FEATURE_VI_YANKMARK
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| 164 | static Byte *reg[28]; // named register a-z, "D", and "U" 0-25,26,27
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| 165 | static int YDreg, Ureg; // default delete register and orig line for "U"
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| 166 | static Byte *mark[28]; // user marks points somewhere in text[]- a-z and previous context ''
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| 167 | static Byte *context_start, *context_end;
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| 168 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
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| 169 | #ifdef CONFIG_FEATURE_VI_SEARCH
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| 170 | static Byte *last_search_pattern; // last pattern from a '/' or '?' search
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| 171 | #endif /* CONFIG_FEATURE_VI_SEARCH */
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| 172 |
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| 173 |
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| 174 | static void edit_file(Byte *); // edit one file
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| 175 | static void do_cmd(Byte); // execute a command
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| 176 | static void sync_cursor(Byte *, int *, int *); // synchronize the screen cursor to dot
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| 177 | static Byte *begin_line(Byte *); // return pointer to cur line B-o-l
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| 178 | static Byte *end_line(Byte *); // return pointer to cur line E-o-l
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| 179 | static Byte *prev_line(Byte *); // return pointer to prev line B-o-l
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| 180 | static Byte *next_line(Byte *); // return pointer to next line B-o-l
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| 181 | static Byte *end_screen(void); // get pointer to last char on screen
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| 182 | static int count_lines(Byte *, Byte *); // count line from start to stop
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| 183 | static Byte *find_line(int); // find begining of line #li
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| 184 | static Byte *move_to_col(Byte *, int); // move "p" to column l
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| 185 | static int isblnk(Byte); // is the char a blank or tab
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| 186 | static void dot_left(void); // move dot left- dont leave line
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| 187 | static void dot_right(void); // move dot right- dont leave line
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| 188 | static void dot_begin(void); // move dot to B-o-l
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| 189 | static void dot_end(void); // move dot to E-o-l
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| 190 | static void dot_next(void); // move dot to next line B-o-l
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| 191 | static void dot_prev(void); // move dot to prev line B-o-l
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| 192 | static void dot_scroll(int, int); // move the screen up or down
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| 193 | static void dot_skip_over_ws(void); // move dot pat WS
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| 194 | static void dot_delete(void); // delete the char at 'dot'
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| 195 | static Byte *bound_dot(Byte *); // make sure text[0] <= P < "end"
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| 196 | static Byte *new_screen(int, int); // malloc virtual screen memory
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| 197 | static Byte *new_text(int); // malloc memory for text[] buffer
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| 198 | static Byte *char_insert(Byte *, Byte); // insert the char c at 'p'
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| 199 | static Byte *stupid_insert(Byte *, Byte); // stupidly insert the char c at 'p'
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| 200 | static Byte find_range(Byte **, Byte **, Byte); // return pointers for an object
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| 201 | static int st_test(Byte *, int, int, Byte *); // helper for skip_thing()
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| 202 | static Byte *skip_thing(Byte *, int, int, int); // skip some object
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| 203 | static Byte *find_pair(Byte *, Byte); // find matching pair () [] {}
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| 204 | static Byte *text_hole_delete(Byte *, Byte *); // at "p", delete a 'size' byte hole
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| 205 | static Byte *text_hole_make(Byte *, int); // at "p", make a 'size' byte hole
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| 206 | static Byte *yank_delete(Byte *, Byte *, int, int); // yank text[] into register then delete
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| 207 | static void show_help(void); // display some help info
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| 208 | static void rawmode(void); // set "raw" mode on tty
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| 209 | static void cookmode(void); // return to "cooked" mode on tty
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| 210 | static int mysleep(int); // sleep for 'h' 1/100 seconds
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| 211 | static Byte readit(void); // read (maybe cursor) key from stdin
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| 212 | static Byte get_one_char(void); // read 1 char from stdin
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| 213 | static int file_size(const Byte *); // what is the byte size of "fn"
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| 214 | static int file_insert(Byte *, Byte *, int);
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| 215 | static int file_write(Byte *, Byte *, Byte *);
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| 216 | static void place_cursor(int, int, int);
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| 217 | static void screen_erase(void);
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| 218 | static void clear_to_eol(void);
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| 219 | static void clear_to_eos(void);
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| 220 | static void standout_start(void); // send "start reverse video" sequence
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| 221 | static void standout_end(void); // send "end reverse video" sequence
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| 222 | static void flash(int); // flash the terminal screen
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| 223 | static void show_status_line(void); // put a message on the bottom line
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| 224 | static void psb(const char *, ...); // Print Status Buf
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| 225 | static void psbs(const char *, ...); // Print Status Buf in standout mode
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| 226 | static void ni(Byte *); // display messages
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| 227 | static int format_edit_status(void); // format file status on status line
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| 228 | static void redraw(int); // force a full screen refresh
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| 229 | static void format_line(Byte*, Byte*, int);
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| 230 | static void refresh(int); // update the terminal from screen[]
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| 231 |
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| 232 | static void Indicate_Error(void); // use flash or beep to indicate error
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| 233 | #define indicate_error(c) Indicate_Error()
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| 234 | static void Hit_Return(void);
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| 235 |
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| 236 | #ifdef CONFIG_FEATURE_VI_SEARCH
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| 237 | static Byte *char_search(Byte *, Byte *, int, int); // search for pattern starting at p
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| 238 | static int mycmp(Byte *, Byte *, int); // string cmp based in "ignorecase"
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| 239 | #endif /* CONFIG_FEATURE_VI_SEARCH */
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| 240 | #ifdef CONFIG_FEATURE_VI_COLON
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| 241 | static Byte *get_one_address(Byte *, int *); // get colon addr, if present
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| 242 | static Byte *get_address(Byte *, int *, int *); // get two colon addrs, if present
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| 243 | static void colon(Byte *); // execute the "colon" mode cmds
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| 244 | #endif /* CONFIG_FEATURE_VI_COLON */
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| 245 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS
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| 246 | static void winch_sig(int); // catch window size changes
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| 247 | static void suspend_sig(int); // catch ctrl-Z
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| 248 | static void catch_sig(int); // catch ctrl-C and alarm time-outs
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| 249 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */
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| 250 | #ifdef CONFIG_FEATURE_VI_DOT_CMD
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| 251 | static void start_new_cmd_q(Byte); // new queue for command
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| 252 | static void end_cmd_q(void); // stop saving input chars
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| 253 | #else /* CONFIG_FEATURE_VI_DOT_CMD */
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| 254 | #define end_cmd_q()
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| 255 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */
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| 256 | #ifdef CONFIG_FEATURE_VI_SETOPTS
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| 257 | static void showmatching(Byte *); // show the matching pair () [] {}
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| 258 | #endif /* CONFIG_FEATURE_VI_SETOPTS */
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| 259 | #if defined(CONFIG_FEATURE_VI_YANKMARK) || (defined(CONFIG_FEATURE_VI_COLON) && defined(CONFIG_FEATURE_VI_SEARCH)) || defined(CONFIG_FEATURE_VI_CRASHME)
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| 260 | static Byte *string_insert(Byte *, Byte *); // insert the string at 'p'
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| 261 | #endif /* CONFIG_FEATURE_VI_YANKMARK || CONFIG_FEATURE_VI_SEARCH || CONFIG_FEATURE_VI_CRASHME */
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| 262 | #ifdef CONFIG_FEATURE_VI_YANKMARK
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| 263 | static Byte *text_yank(Byte *, Byte *, int); // save copy of "p" into a register
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| 264 | static Byte what_reg(void); // what is letter of current YDreg
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| 265 | static void check_context(Byte); // remember context for '' command
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| 266 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
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| 267 | #ifdef CONFIG_FEATURE_VI_CRASHME
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| 268 | static void crash_dummy();
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| 269 | static void crash_test();
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| 270 | static int crashme = 0;
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| 271 | #endif /* CONFIG_FEATURE_VI_CRASHME */
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| 272 |
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| 273 |
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| 274 | static void write1(const char *out)
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| 275 | {
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| 276 | fputs(out, stdout);
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| 277 | }
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| 278 |
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| 279 | int vi_main(int argc, char **argv)
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| 280 | {
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| 281 | int c;
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| 282 | RESERVE_CONFIG_BUFFER(STATUS_BUFFER, STATUS_BUFFER_LEN);
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| 283 |
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| 284 | #ifdef CONFIG_FEATURE_VI_YANKMARK
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| 285 | int i;
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| 286 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
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| 287 | #if defined(CONFIG_FEATURE_VI_USE_SIGNALS) || defined(CONFIG_FEATURE_VI_CRASHME)
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| 288 | my_pid = getpid();
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| 289 | #endif
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| 290 | #ifdef CONFIG_FEATURE_VI_CRASHME
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| 291 | (void) srand((long) my_pid);
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| 292 | #endif /* CONFIG_FEATURE_VI_CRASHME */
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| 293 |
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| 294 | status_buffer = (Byte *)STATUS_BUFFER;
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| 295 | last_status_cksum = 0;
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| 296 |
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| 297 | #ifdef CONFIG_FEATURE_VI_READONLY
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| 298 | vi_readonly = readonly = FALSE;
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| 299 | if (strncmp(argv[0], "view", 4) == 0) {
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| 300 | readonly = TRUE;
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| 301 | vi_readonly = TRUE;
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| 302 | }
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| 303 | #endif /* CONFIG_FEATURE_VI_READONLY */
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| 304 | vi_setops = VI_AUTOINDENT | VI_SHOWMATCH | VI_IGNORECASE | VI_ERR_METHOD;
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| 305 | #ifdef CONFIG_FEATURE_VI_YANKMARK
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| 306 | for (i = 0; i < 28; i++) {
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| 307 | reg[i] = 0;
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| 308 | } // init the yank regs
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| 309 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
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| 310 | #if defined(CONFIG_FEATURE_VI_DOT_CMD) || defined(CONFIG_FEATURE_VI_YANKMARK)
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| 311 | modifying_cmds = (Byte *) "aAcCdDiIJoOpPrRsxX<>~"; // cmds modifying text[]
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| 312 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */
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| 313 |
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| 314 | // 1- process $HOME/.exrc file
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| 315 | // 2- process EXINIT variable from environment
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| 316 | // 3- process command line args
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| 317 | while ((c = getopt(argc, argv, "hCR")) != -1) {
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| 318 | switch (c) {
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| 319 | #ifdef CONFIG_FEATURE_VI_CRASHME
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| 320 | case 'C':
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| 321 | crashme = 1;
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| 322 | break;
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| 323 | #endif /* CONFIG_FEATURE_VI_CRASHME */
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| 324 | #ifdef CONFIG_FEATURE_VI_READONLY
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| 325 | case 'R': // Read-only flag
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| 326 | readonly = TRUE;
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| 327 | vi_readonly = TRUE;
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| 328 | break;
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| 329 | #endif /* CONFIG_FEATURE_VI_READONLY */
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| 330 | //case 'r': // recover flag- ignore- we don't use tmp file
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| 331 | //case 'x': // encryption flag- ignore
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| 332 | //case 'c': // execute command first
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| 333 | //case 'h': // help -- just use default
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| 334 | default:
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| 335 | show_help();
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| 336 | return 1;
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| 337 | }
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| 338 | }
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| 339 |
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| 340 | // The argv array can be used by the ":next" and ":rewind" commands
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| 341 | // save optind.
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| 342 | fn_start = optind; // remember first file name for :next and :rew
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| 343 | save_argc = argc;
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| 344 |
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| 345 | //----- This is the main file handling loop --------------
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| 346 | if (optind >= argc) {
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| 347 | editing = 1; // 0= exit, 1= one file, 2= multiple files
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| 348 | edit_file(0);
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| 349 | } else {
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| 350 | for (; optind < argc; optind++) {
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| 351 | editing = 1; // 0=exit, 1=one file, 2+ =many files
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| 352 | free(cfn);
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| 353 | cfn = (Byte *) bb_xstrdup(argv[optind]);
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| 354 | edit_file(cfn);
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---|
| 355 | }
|
---|
| 356 | }
|
---|
| 357 | //-----------------------------------------------------------
|
---|
| 358 |
|
---|
| 359 | return (0);
|
---|
| 360 | }
|
---|
| 361 |
|
---|
| 362 | static void edit_file(Byte * fn)
|
---|
| 363 | {
|
---|
| 364 | Byte c;
|
---|
| 365 | int cnt, size, ch;
|
---|
| 366 |
|
---|
| 367 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS
|
---|
| 368 | int sig;
|
---|
| 369 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */
|
---|
| 370 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 371 | static Byte *cur_line;
|
---|
| 372 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 373 |
|
---|
| 374 | rawmode();
|
---|
| 375 | rows = 24;
|
---|
| 376 | columns = 80;
|
---|
| 377 | ch= -1;
|
---|
| 378 | if (ENABLE_FEATURE_VI_WIN_RESIZE)
|
---|
| 379 | get_terminal_width_height(0, &columns, &rows);
|
---|
| 380 | new_screen(rows, columns); // get memory for virtual screen
|
---|
| 381 |
|
---|
| 382 | cnt = file_size(fn); // file size
|
---|
| 383 | size = 2 * cnt; // 200% of file size
|
---|
| 384 | new_text(size); // get a text[] buffer
|
---|
| 385 | screenbegin = dot = end = text;
|
---|
| 386 | if (fn != 0) {
|
---|
| 387 | ch= file_insert(fn, text, cnt);
|
---|
| 388 | }
|
---|
| 389 | if (ch < 1) {
|
---|
| 390 | (void) char_insert(text, '\n'); // start empty buf with dummy line
|
---|
| 391 | }
|
---|
| 392 | file_modified = 0;
|
---|
| 393 | last_file_modified = -1;
|
---|
| 394 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 395 | YDreg = 26; // default Yank/Delete reg
|
---|
| 396 | Ureg = 27; // hold orig line for "U" cmd
|
---|
| 397 | for (cnt = 0; cnt < 28; cnt++) {
|
---|
| 398 | mark[cnt] = 0;
|
---|
| 399 | } // init the marks
|
---|
| 400 | mark[26] = mark[27] = text; // init "previous context"
|
---|
| 401 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 402 |
|
---|
| 403 | last_forward_char = last_input_char = '\0';
|
---|
| 404 | crow = 0;
|
---|
| 405 | ccol = 0;
|
---|
| 406 |
|
---|
| 407 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS
|
---|
| 408 | catch_sig(0);
|
---|
| 409 | signal(SIGWINCH, winch_sig);
|
---|
| 410 | signal(SIGTSTP, suspend_sig);
|
---|
| 411 | sig = setjmp(restart);
|
---|
| 412 | if (sig != 0) {
|
---|
| 413 | screenbegin = dot = text;
|
---|
| 414 | }
|
---|
| 415 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */
|
---|
| 416 |
|
---|
| 417 | editing = 1;
|
---|
| 418 | cmd_mode = 0; // 0=command 1=insert 2='R'eplace
|
---|
| 419 | cmdcnt = 0;
|
---|
| 420 | tabstop = 8;
|
---|
| 421 | offset = 0; // no horizontal offset
|
---|
| 422 | c = '\0';
|
---|
| 423 | #ifdef CONFIG_FEATURE_VI_DOT_CMD
|
---|
| 424 | free(last_modifying_cmd);
|
---|
| 425 | free(ioq_start);
|
---|
| 426 | ioq = ioq_start = last_modifying_cmd = 0;
|
---|
| 427 | adding2q = 0;
|
---|
| 428 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
---|
| 429 | redraw(FALSE); // dont force every col re-draw
|
---|
| 430 | show_status_line();
|
---|
| 431 |
|
---|
| 432 | //------This is the main Vi cmd handling loop -----------------------
|
---|
| 433 | while (editing > 0) {
|
---|
| 434 | #ifdef CONFIG_FEATURE_VI_CRASHME
|
---|
| 435 | if (crashme > 0) {
|
---|
| 436 | if ((end - text) > 1) {
|
---|
| 437 | crash_dummy(); // generate a random command
|
---|
| 438 | } else {
|
---|
| 439 | crashme = 0;
|
---|
| 440 | dot =
|
---|
| 441 | string_insert(text, (Byte *) "\n\n##### Ran out of text to work on. #####\n\n"); // insert the string
|
---|
| 442 | refresh(FALSE);
|
---|
| 443 | }
|
---|
| 444 | }
|
---|
| 445 | #endif /* CONFIG_FEATURE_VI_CRASHME */
|
---|
| 446 | last_input_char = c = get_one_char(); // get a cmd from user
|
---|
| 447 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 448 | // save a copy of the current line- for the 'U" command
|
---|
| 449 | if (begin_line(dot) != cur_line) {
|
---|
| 450 | cur_line = begin_line(dot);
|
---|
| 451 | text_yank(begin_line(dot), end_line(dot), Ureg);
|
---|
| 452 | }
|
---|
| 453 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 454 | #ifdef CONFIG_FEATURE_VI_DOT_CMD
|
---|
| 455 | // These are commands that change text[].
|
---|
| 456 | // Remember the input for the "." command
|
---|
| 457 | if (!adding2q && ioq_start == 0
|
---|
| 458 | && strchr((char *) modifying_cmds, c) != NULL) {
|
---|
| 459 | start_new_cmd_q(c);
|
---|
| 460 | }
|
---|
| 461 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
---|
| 462 | do_cmd(c); // execute the user command
|
---|
| 463 | //
|
---|
| 464 | // poll to see if there is input already waiting. if we are
|
---|
| 465 | // not able to display output fast enough to keep up, skip
|
---|
| 466 | // the display update until we catch up with input.
|
---|
| 467 | if (mysleep(0) == 0) {
|
---|
| 468 | // no input pending- so update output
|
---|
| 469 | refresh(FALSE);
|
---|
| 470 | show_status_line();
|
---|
| 471 | }
|
---|
| 472 | #ifdef CONFIG_FEATURE_VI_CRASHME
|
---|
| 473 | if (crashme > 0)
|
---|
| 474 | crash_test(); // test editor variables
|
---|
| 475 | #endif /* CONFIG_FEATURE_VI_CRASHME */
|
---|
| 476 | }
|
---|
| 477 | //-------------------------------------------------------------------
|
---|
| 478 |
|
---|
| 479 | place_cursor(rows, 0, FALSE); // go to bottom of screen
|
---|
| 480 | clear_to_eol(); // Erase to end of line
|
---|
| 481 | cookmode();
|
---|
| 482 | }
|
---|
| 483 |
|
---|
| 484 | //----- The Colon commands -------------------------------------
|
---|
| 485 | #ifdef CONFIG_FEATURE_VI_COLON
|
---|
| 486 | static Byte *get_one_address(Byte * p, int *addr) // get colon addr, if present
|
---|
| 487 | {
|
---|
| 488 | int st;
|
---|
| 489 | Byte *q;
|
---|
| 490 |
|
---|
| 491 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 492 | Byte c;
|
---|
| 493 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 494 | #ifdef CONFIG_FEATURE_VI_SEARCH
|
---|
| 495 | Byte *pat, buf[BUFSIZ];
|
---|
| 496 | #endif /* CONFIG_FEATURE_VI_SEARCH */
|
---|
| 497 |
|
---|
| 498 | *addr = -1; // assume no addr
|
---|
| 499 | if (*p == '.') { // the current line
|
---|
| 500 | p++;
|
---|
| 501 | q = begin_line(dot);
|
---|
| 502 | *addr = count_lines(text, q);
|
---|
| 503 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 504 | } else if (*p == '\'') { // is this a mark addr
|
---|
| 505 | p++;
|
---|
| 506 | c = tolower(*p);
|
---|
| 507 | p++;
|
---|
| 508 | if (c >= 'a' && c <= 'z') {
|
---|
| 509 | // we have a mark
|
---|
| 510 | c = c - 'a';
|
---|
| 511 | q = mark[(int) c];
|
---|
| 512 | if (q != NULL) { // is mark valid
|
---|
| 513 | *addr = count_lines(text, q); // count lines
|
---|
| 514 | }
|
---|
| 515 | }
|
---|
| 516 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 517 | #ifdef CONFIG_FEATURE_VI_SEARCH
|
---|
| 518 | } else if (*p == '/') { // a search pattern
|
---|
| 519 | q = buf;
|
---|
| 520 | for (p++; *p; p++) {
|
---|
| 521 | if (*p == '/')
|
---|
| 522 | break;
|
---|
| 523 | *q++ = *p;
|
---|
| 524 | *q = '\0';
|
---|
| 525 | }
|
---|
| 526 | pat = (Byte *) bb_xstrdup((char *) buf); // save copy of pattern
|
---|
| 527 | if (*p == '/')
|
---|
| 528 | p++;
|
---|
| 529 | q = char_search(dot, pat, FORWARD, FULL);
|
---|
| 530 | if (q != NULL) {
|
---|
| 531 | *addr = count_lines(text, q);
|
---|
| 532 | }
|
---|
| 533 | free(pat);
|
---|
| 534 | #endif /* CONFIG_FEATURE_VI_SEARCH */
|
---|
| 535 | } else if (*p == '$') { // the last line in file
|
---|
| 536 | p++;
|
---|
| 537 | q = begin_line(end - 1);
|
---|
| 538 | *addr = count_lines(text, q);
|
---|
| 539 | } else if (isdigit(*p)) { // specific line number
|
---|
| 540 | sscanf((char *) p, "%d%n", addr, &st);
|
---|
| 541 | p += st;
|
---|
| 542 | } else { // I don't reconise this
|
---|
| 543 | // unrecognised address- assume -1
|
---|
| 544 | *addr = -1;
|
---|
| 545 | }
|
---|
| 546 | return (p);
|
---|
| 547 | }
|
---|
| 548 |
|
---|
| 549 | static Byte *get_address(Byte *p, int *b, int *e) // get two colon addrs, if present
|
---|
| 550 | {
|
---|
| 551 | //----- get the address' i.e., 1,3 'a,'b -----
|
---|
| 552 | // get FIRST addr, if present
|
---|
| 553 | while (isblnk(*p))
|
---|
| 554 | p++; // skip over leading spaces
|
---|
| 555 | if (*p == '%') { // alias for 1,$
|
---|
| 556 | p++;
|
---|
| 557 | *b = 1;
|
---|
| 558 | *e = count_lines(text, end-1);
|
---|
| 559 | goto ga0;
|
---|
| 560 | }
|
---|
| 561 | p = get_one_address(p, b);
|
---|
| 562 | while (isblnk(*p))
|
---|
| 563 | p++;
|
---|
| 564 | if (*p == ',') { // is there a address separator
|
---|
| 565 | p++;
|
---|
| 566 | while (isblnk(*p))
|
---|
| 567 | p++;
|
---|
| 568 | // get SECOND addr, if present
|
---|
| 569 | p = get_one_address(p, e);
|
---|
| 570 | }
|
---|
| 571 | ga0:
|
---|
| 572 | while (isblnk(*p))
|
---|
| 573 | p++; // skip over trailing spaces
|
---|
| 574 | return (p);
|
---|
| 575 | }
|
---|
| 576 |
|
---|
| 577 | #ifdef CONFIG_FEATURE_VI_SETOPTS
|
---|
| 578 | static void setops(const Byte *args, const char *opname, int flg_no,
|
---|
| 579 | const char *short_opname, int opt)
|
---|
| 580 | {
|
---|
| 581 | const char *a = (char *) args + flg_no;
|
---|
| 582 | int l = strlen(opname) - 1; /* opname have + ' ' */
|
---|
| 583 |
|
---|
| 584 | if (strncasecmp(a, opname, l) == 0 ||
|
---|
| 585 | strncasecmp(a, short_opname, 2) == 0) {
|
---|
| 586 | if(flg_no)
|
---|
| 587 | vi_setops &= ~opt;
|
---|
| 588 | else
|
---|
| 589 | vi_setops |= opt;
|
---|
| 590 | }
|
---|
| 591 | }
|
---|
| 592 | #endif
|
---|
| 593 |
|
---|
| 594 | static void colon(Byte * buf)
|
---|
| 595 | {
|
---|
| 596 | Byte c, *orig_buf, *buf1, *q, *r;
|
---|
| 597 | Byte *fn, cmd[BUFSIZ], args[BUFSIZ];
|
---|
| 598 | int i, l, li, ch, st, b, e;
|
---|
| 599 | int useforce = FALSE, forced = FALSE;
|
---|
| 600 | struct stat st_buf;
|
---|
| 601 |
|
---|
| 602 | // :3154 // if (-e line 3154) goto it else stay put
|
---|
| 603 | // :4,33w! foo // write a portion of buffer to file "foo"
|
---|
| 604 | // :w // write all of buffer to current file
|
---|
| 605 | // :q // quit
|
---|
| 606 | // :q! // quit- dont care about modified file
|
---|
| 607 | // :'a,'z!sort -u // filter block through sort
|
---|
| 608 | // :'f // goto mark "f"
|
---|
| 609 | // :'fl // list literal the mark "f" line
|
---|
| 610 | // :.r bar // read file "bar" into buffer before dot
|
---|
| 611 | // :/123/,/abc/d // delete lines from "123" line to "abc" line
|
---|
| 612 | // :/xyz/ // goto the "xyz" line
|
---|
| 613 | // :s/find/replace/ // substitute pattern "find" with "replace"
|
---|
| 614 | // :!<cmd> // run <cmd> then return
|
---|
| 615 | //
|
---|
| 616 |
|
---|
| 617 | if (strlen((char *) buf) <= 0)
|
---|
| 618 | goto vc1;
|
---|
| 619 | if (*buf == ':')
|
---|
| 620 | buf++; // move past the ':'
|
---|
| 621 |
|
---|
| 622 | li = st = ch = i = 0;
|
---|
| 623 | b = e = -1;
|
---|
| 624 | q = text; // assume 1,$ for the range
|
---|
| 625 | r = end - 1;
|
---|
| 626 | li = count_lines(text, end - 1);
|
---|
| 627 | fn = cfn; // default to current file
|
---|
| 628 | memset(cmd, '\0', BUFSIZ); // clear cmd[]
|
---|
| 629 | memset(args, '\0', BUFSIZ); // clear args[]
|
---|
| 630 |
|
---|
| 631 | // look for optional address(es) :. :1 :1,9 :'q,'a :%
|
---|
| 632 | buf = get_address(buf, &b, &e);
|
---|
| 633 |
|
---|
| 634 | // remember orig command line
|
---|
| 635 | orig_buf = buf;
|
---|
| 636 |
|
---|
| 637 | // get the COMMAND into cmd[]
|
---|
| 638 | buf1 = cmd;
|
---|
| 639 | while (*buf != '\0') {
|
---|
| 640 | if (isspace(*buf))
|
---|
| 641 | break;
|
---|
| 642 | *buf1++ = *buf++;
|
---|
| 643 | }
|
---|
| 644 | // get any ARGuments
|
---|
| 645 | while (isblnk(*buf))
|
---|
| 646 | buf++;
|
---|
| 647 | strcpy((char *) args, (char *) buf);
|
---|
| 648 | buf1 = (Byte*)last_char_is((char *)cmd, '!');
|
---|
| 649 | if (buf1) {
|
---|
| 650 | useforce = TRUE;
|
---|
| 651 | *buf1 = '\0'; // get rid of !
|
---|
| 652 | }
|
---|
| 653 | if (b >= 0) {
|
---|
| 654 | // if there is only one addr, then the addr
|
---|
| 655 | // is the line number of the single line the
|
---|
| 656 | // user wants. So, reset the end
|
---|
| 657 | // pointer to point at end of the "b" line
|
---|
| 658 | q = find_line(b); // what line is #b
|
---|
| 659 | r = end_line(q);
|
---|
| 660 | li = 1;
|
---|
| 661 | }
|
---|
| 662 | if (e >= 0) {
|
---|
| 663 | // we were given two addrs. change the
|
---|
| 664 | // end pointer to the addr given by user.
|
---|
| 665 | r = find_line(e); // what line is #e
|
---|
| 666 | r = end_line(r);
|
---|
| 667 | li = e - b + 1;
|
---|
| 668 | }
|
---|
| 669 | // ------------ now look for the command ------------
|
---|
| 670 | i = strlen((char *) cmd);
|
---|
| 671 | if (i == 0) { // :123CR goto line #123
|
---|
| 672 | if (b >= 0) {
|
---|
| 673 | dot = find_line(b); // what line is #b
|
---|
| 674 | dot_skip_over_ws();
|
---|
| 675 | }
|
---|
| 676 | } else if (strncmp((char *) cmd, "!", 1) == 0) { // run a cmd
|
---|
| 677 | // :!ls run the <cmd>
|
---|
| 678 | (void) alarm(0); // wait for input- no alarms
|
---|
| 679 | place_cursor(rows - 1, 0, FALSE); // go to Status line
|
---|
| 680 | clear_to_eol(); // clear the line
|
---|
| 681 | cookmode();
|
---|
| 682 | system((char*)(orig_buf+1)); // run the cmd
|
---|
| 683 | rawmode();
|
---|
| 684 | Hit_Return(); // let user see results
|
---|
| 685 | (void) alarm(3); // done waiting for input
|
---|
| 686 | } else if (strncmp((char *) cmd, "=", i) == 0) { // where is the address
|
---|
| 687 | if (b < 0) { // no addr given- use defaults
|
---|
| 688 | b = e = count_lines(text, dot);
|
---|
| 689 | }
|
---|
| 690 | psb("%d", b);
|
---|
| 691 | } else if (strncasecmp((char *) cmd, "delete", i) == 0) { // delete lines
|
---|
| 692 | if (b < 0) { // no addr given- use defaults
|
---|
| 693 | q = begin_line(dot); // assume .,. for the range
|
---|
| 694 | r = end_line(dot);
|
---|
| 695 | }
|
---|
| 696 | dot = yank_delete(q, r, 1, YANKDEL); // save, then delete lines
|
---|
| 697 | dot_skip_over_ws();
|
---|
| 698 | } else if (strncasecmp((char *) cmd, "edit", i) == 0) { // Edit a file
|
---|
| 699 | int sr;
|
---|
| 700 | sr= 0;
|
---|
| 701 | // don't edit, if the current file has been modified
|
---|
| 702 | if (file_modified && ! useforce) {
|
---|
| 703 | psbs("No write since last change (:edit! overrides)");
|
---|
| 704 | goto vc1;
|
---|
| 705 | }
|
---|
| 706 | if (strlen((char*)args) > 0) {
|
---|
| 707 | // the user supplied a file name
|
---|
| 708 | fn= args;
|
---|
| 709 | } else if (cfn != 0 && strlen((char*)cfn) > 0) {
|
---|
| 710 | // no user supplied name- use the current filename
|
---|
| 711 | fn= cfn;
|
---|
| 712 | goto vc5;
|
---|
| 713 | } else {
|
---|
| 714 | // no user file name, no current name- punt
|
---|
| 715 | psbs("No current filename");
|
---|
| 716 | goto vc1;
|
---|
| 717 | }
|
---|
| 718 |
|
---|
| 719 | // see if file exists- if not, its just a new file request
|
---|
| 720 | if ((sr=stat((char*)fn, &st_buf)) < 0) {
|
---|
| 721 | // This is just a request for a new file creation.
|
---|
| 722 | // The file_insert below will fail but we get
|
---|
| 723 | // an empty buffer with a file name. Then the "write"
|
---|
| 724 | // command can do the create.
|
---|
| 725 | } else {
|
---|
| 726 | if ((st_buf.st_mode & (S_IFREG)) == 0) {
|
---|
| 727 | // This is not a regular file
|
---|
| 728 | psbs("\"%s\" is not a regular file", fn);
|
---|
| 729 | goto vc1;
|
---|
| 730 | }
|
---|
| 731 | if ((st_buf.st_mode & (S_IRUSR | S_IRGRP | S_IROTH)) == 0) {
|
---|
| 732 | // dont have any read permissions
|
---|
| 733 | psbs("\"%s\" is not readable", fn);
|
---|
| 734 | goto vc1;
|
---|
| 735 | }
|
---|
| 736 | }
|
---|
| 737 |
|
---|
| 738 | // There is a read-able regular file
|
---|
| 739 | // make this the current file
|
---|
| 740 | q = (Byte *) bb_xstrdup((char *) fn); // save the cfn
|
---|
| 741 | free(cfn); // free the old name
|
---|
| 742 | cfn = q; // remember new cfn
|
---|
| 743 |
|
---|
| 744 | vc5:
|
---|
| 745 | // delete all the contents of text[]
|
---|
| 746 | new_text(2 * file_size(fn));
|
---|
| 747 | screenbegin = dot = end = text;
|
---|
| 748 |
|
---|
| 749 | // insert new file
|
---|
| 750 | ch = file_insert(fn, text, file_size(fn));
|
---|
| 751 |
|
---|
| 752 | if (ch < 1) {
|
---|
| 753 | // start empty buf with dummy line
|
---|
| 754 | (void) char_insert(text, '\n');
|
---|
| 755 | ch= 1;
|
---|
| 756 | }
|
---|
| 757 | file_modified = 0;
|
---|
| 758 | last_file_modified = -1;
|
---|
| 759 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 760 | if (Ureg >= 0 && Ureg < 28 && reg[Ureg] != 0) {
|
---|
| 761 | free(reg[Ureg]); // free orig line reg- for 'U'
|
---|
| 762 | reg[Ureg]= 0;
|
---|
| 763 | }
|
---|
| 764 | if (YDreg >= 0 && YDreg < 28 && reg[YDreg] != 0) {
|
---|
| 765 | free(reg[YDreg]); // free default yank/delete register
|
---|
| 766 | reg[YDreg]= 0;
|
---|
| 767 | }
|
---|
| 768 | for (li = 0; li < 28; li++) {
|
---|
| 769 | mark[li] = 0;
|
---|
| 770 | } // init the marks
|
---|
| 771 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 772 | // how many lines in text[]?
|
---|
| 773 | li = count_lines(text, end - 1);
|
---|
| 774 | psb("\"%s\"%s"
|
---|
| 775 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 776 | "%s"
|
---|
| 777 | #endif /* CONFIG_FEATURE_VI_READONLY */
|
---|
| 778 | " %dL, %dC", cfn,
|
---|
| 779 | (sr < 0 ? " [New file]" : ""),
|
---|
| 780 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 781 | ((vi_readonly || readonly) ? " [Read only]" : ""),
|
---|
| 782 | #endif /* CONFIG_FEATURE_VI_READONLY */
|
---|
| 783 | li, ch);
|
---|
| 784 | } else if (strncasecmp((char *) cmd, "file", i) == 0) { // what File is this
|
---|
| 785 | if (b != -1 || e != -1) {
|
---|
| 786 | ni((Byte *) "No address allowed on this command");
|
---|
| 787 | goto vc1;
|
---|
| 788 | }
|
---|
| 789 | if (strlen((char *) args) > 0) {
|
---|
| 790 | // user wants a new filename
|
---|
| 791 | free(cfn);
|
---|
| 792 | cfn = (Byte *) bb_xstrdup((char *) args);
|
---|
| 793 | } else {
|
---|
| 794 | // user wants file status info
|
---|
| 795 | last_status_cksum = 0; // force status update
|
---|
| 796 | }
|
---|
| 797 | } else if (strncasecmp((char *) cmd, "features", i) == 0) { // what features are available
|
---|
| 798 | // print out values of all features
|
---|
| 799 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen
|
---|
| 800 | clear_to_eol(); // clear the line
|
---|
| 801 | cookmode();
|
---|
| 802 | show_help();
|
---|
| 803 | rawmode();
|
---|
| 804 | Hit_Return();
|
---|
| 805 | } else if (strncasecmp((char *) cmd, "list", i) == 0) { // literal print line
|
---|
| 806 | if (b < 0) { // no addr given- use defaults
|
---|
| 807 | q = begin_line(dot); // assume .,. for the range
|
---|
| 808 | r = end_line(dot);
|
---|
| 809 | }
|
---|
| 810 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen
|
---|
| 811 | clear_to_eol(); // clear the line
|
---|
| 812 | puts("\r");
|
---|
| 813 | for (; q <= r; q++) {
|
---|
| 814 | int c_is_no_print;
|
---|
| 815 |
|
---|
| 816 | c = *q;
|
---|
| 817 | c_is_no_print = c > 127 && !Isprint(c);
|
---|
| 818 | if (c_is_no_print) {
|
---|
| 819 | c = '.';
|
---|
| 820 | standout_start();
|
---|
| 821 | }
|
---|
| 822 | if (c == '\n') {
|
---|
| 823 | write1("$\r");
|
---|
| 824 | } else if (c < ' ' || c == 127) {
|
---|
| 825 | putchar('^');
|
---|
| 826 | if(c == 127)
|
---|
| 827 | c = '?';
|
---|
| 828 | else
|
---|
| 829 | c += '@';
|
---|
| 830 | }
|
---|
| 831 | putchar(c);
|
---|
| 832 | if (c_is_no_print)
|
---|
| 833 | standout_end();
|
---|
| 834 | }
|
---|
| 835 | #ifdef CONFIG_FEATURE_VI_SET
|
---|
| 836 | vc2:
|
---|
| 837 | #endif /* CONFIG_FEATURE_VI_SET */
|
---|
| 838 | Hit_Return();
|
---|
| 839 | } else if ((strncasecmp((char *) cmd, "quit", i) == 0) || // Quit
|
---|
| 840 | (strncasecmp((char *) cmd, "next", i) == 0)) { // edit next file
|
---|
| 841 | if (useforce) {
|
---|
| 842 | // force end of argv list
|
---|
| 843 | if (*cmd == 'q') {
|
---|
| 844 | optind = save_argc;
|
---|
| 845 | }
|
---|
| 846 | editing = 0;
|
---|
| 847 | goto vc1;
|
---|
| 848 | }
|
---|
| 849 | // don't exit if the file been modified
|
---|
| 850 | if (file_modified) {
|
---|
| 851 | psbs("No write since last change (:%s! overrides)",
|
---|
| 852 | (*cmd == 'q' ? "quit" : "next"));
|
---|
| 853 | goto vc1;
|
---|
| 854 | }
|
---|
| 855 | // are there other file to edit
|
---|
| 856 | if (*cmd == 'q' && optind < save_argc - 1) {
|
---|
| 857 | psbs("%d more file to edit", (save_argc - optind - 1));
|
---|
| 858 | goto vc1;
|
---|
| 859 | }
|
---|
| 860 | if (*cmd == 'n' && optind >= save_argc - 1) {
|
---|
| 861 | psbs("No more files to edit");
|
---|
| 862 | goto vc1;
|
---|
| 863 | }
|
---|
| 864 | editing = 0;
|
---|
| 865 | } else if (strncasecmp((char *) cmd, "read", i) == 0) { // read file into text[]
|
---|
| 866 | fn = args;
|
---|
| 867 | if (strlen((char *) fn) <= 0) {
|
---|
| 868 | psbs("No filename given");
|
---|
| 869 | goto vc1;
|
---|
| 870 | }
|
---|
| 871 | if (b < 0) { // no addr given- use defaults
|
---|
| 872 | q = begin_line(dot); // assume "dot"
|
---|
| 873 | }
|
---|
| 874 | // read after current line- unless user said ":0r foo"
|
---|
| 875 | if (b != 0)
|
---|
| 876 | q = next_line(q);
|
---|
| 877 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 878 | l= readonly; // remember current files' status
|
---|
| 879 | #endif
|
---|
| 880 | ch = file_insert(fn, q, file_size(fn));
|
---|
| 881 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 882 | readonly= l;
|
---|
| 883 | #endif
|
---|
| 884 | if (ch < 0)
|
---|
| 885 | goto vc1; // nothing was inserted
|
---|
| 886 | // how many lines in text[]?
|
---|
| 887 | li = count_lines(q, q + ch - 1);
|
---|
| 888 | psb("\"%s\""
|
---|
| 889 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 890 | "%s"
|
---|
| 891 | #endif /* CONFIG_FEATURE_VI_READONLY */
|
---|
| 892 | " %dL, %dC", fn,
|
---|
| 893 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 894 | ((vi_readonly || readonly) ? " [Read only]" : ""),
|
---|
| 895 | #endif /* CONFIG_FEATURE_VI_READONLY */
|
---|
| 896 | li, ch);
|
---|
| 897 | if (ch > 0) {
|
---|
| 898 | // if the insert is before "dot" then we need to update
|
---|
| 899 | if (q <= dot)
|
---|
| 900 | dot += ch;
|
---|
| 901 | file_modified++;
|
---|
| 902 | }
|
---|
| 903 | } else if (strncasecmp((char *) cmd, "rewind", i) == 0) { // rewind cmd line args
|
---|
| 904 | if (file_modified && ! useforce) {
|
---|
| 905 | psbs("No write since last change (:rewind! overrides)");
|
---|
| 906 | } else {
|
---|
| 907 | // reset the filenames to edit
|
---|
| 908 | optind = fn_start - 1;
|
---|
| 909 | editing = 0;
|
---|
| 910 | }
|
---|
| 911 | #ifdef CONFIG_FEATURE_VI_SET
|
---|
| 912 | } else if (strncasecmp((char *) cmd, "set", i) == 0) { // set or clear features
|
---|
| 913 | i = 0; // offset into args
|
---|
| 914 | if (strlen((char *) args) == 0) {
|
---|
| 915 | // print out values of all options
|
---|
| 916 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen
|
---|
| 917 | clear_to_eol(); // clear the line
|
---|
| 918 | printf("----------------------------------------\r\n");
|
---|
| 919 | #ifdef CONFIG_FEATURE_VI_SETOPTS
|
---|
| 920 | if (!autoindent)
|
---|
| 921 | printf("no");
|
---|
| 922 | printf("autoindent ");
|
---|
| 923 | if (!err_method)
|
---|
| 924 | printf("no");
|
---|
| 925 | printf("flash ");
|
---|
| 926 | if (!ignorecase)
|
---|
| 927 | printf("no");
|
---|
| 928 | printf("ignorecase ");
|
---|
| 929 | if (!showmatch)
|
---|
| 930 | printf("no");
|
---|
| 931 | printf("showmatch ");
|
---|
| 932 | printf("tabstop=%d ", tabstop);
|
---|
| 933 | #endif /* CONFIG_FEATURE_VI_SETOPTS */
|
---|
| 934 | printf("\r\n");
|
---|
| 935 | goto vc2;
|
---|
| 936 | }
|
---|
| 937 | if (strncasecmp((char *) args, "no", 2) == 0)
|
---|
| 938 | i = 2; // ":set noautoindent"
|
---|
| 939 | #ifdef CONFIG_FEATURE_VI_SETOPTS
|
---|
| 940 | setops(args, "autoindent ", i, "ai", VI_AUTOINDENT);
|
---|
| 941 | setops(args, "flash ", i, "fl", VI_ERR_METHOD);
|
---|
| 942 | setops(args, "ignorecase ", i, "ic", VI_IGNORECASE);
|
---|
| 943 | setops(args, "showmatch ", i, "ic", VI_SHOWMATCH);
|
---|
| 944 | if (strncasecmp((char *) args + i, "tabstop=%d ", 7) == 0) {
|
---|
| 945 | sscanf(strchr((char *) args + i, '='), "=%d", &ch);
|
---|
| 946 | if (ch > 0 && ch < columns - 1)
|
---|
| 947 | tabstop = ch;
|
---|
| 948 | }
|
---|
| 949 | #endif /* CONFIG_FEATURE_VI_SETOPTS */
|
---|
| 950 | #endif /* CONFIG_FEATURE_VI_SET */
|
---|
| 951 | #ifdef CONFIG_FEATURE_VI_SEARCH
|
---|
| 952 | } else if (strncasecmp((char *) cmd, "s", 1) == 0) { // substitute a pattern with a replacement pattern
|
---|
| 953 | Byte *ls, *F, *R;
|
---|
| 954 | int gflag;
|
---|
| 955 |
|
---|
| 956 | // F points to the "find" pattern
|
---|
| 957 | // R points to the "replace" pattern
|
---|
| 958 | // replace the cmd line delimiters "/" with NULLs
|
---|
| 959 | gflag = 0; // global replace flag
|
---|
| 960 | c = orig_buf[1]; // what is the delimiter
|
---|
| 961 | F = orig_buf + 2; // start of "find"
|
---|
| 962 | R = (Byte *) strchr((char *) F, c); // middle delimiter
|
---|
| 963 | if (!R) goto colon_s_fail;
|
---|
| 964 | *R++ = '\0'; // terminate "find"
|
---|
| 965 | buf1 = (Byte *) strchr((char *) R, c);
|
---|
| 966 | if (!buf1) goto colon_s_fail;
|
---|
| 967 | *buf1++ = '\0'; // terminate "replace"
|
---|
| 968 | if (*buf1 == 'g') { // :s/foo/bar/g
|
---|
| 969 | buf1++;
|
---|
| 970 | gflag++; // turn on gflag
|
---|
| 971 | }
|
---|
| 972 | q = begin_line(q);
|
---|
| 973 | if (b < 0) { // maybe :s/foo/bar/
|
---|
| 974 | q = begin_line(dot); // start with cur line
|
---|
| 975 | b = count_lines(text, q); // cur line number
|
---|
| 976 | }
|
---|
| 977 | if (e < 0)
|
---|
| 978 | e = b; // maybe :.s/foo/bar/
|
---|
| 979 | for (i = b; i <= e; i++) { // so, :20,23 s \0 find \0 replace \0
|
---|
| 980 | ls = q; // orig line start
|
---|
| 981 | vc4:
|
---|
| 982 | buf1 = char_search(q, F, FORWARD, LIMITED); // search cur line only for "find"
|
---|
| 983 | if (buf1 != NULL) {
|
---|
| 984 | // we found the "find" pattern- delete it
|
---|
| 985 | (void) text_hole_delete(buf1, buf1 + strlen((char *) F) - 1);
|
---|
| 986 | // inset the "replace" patern
|
---|
| 987 | (void) string_insert(buf1, R); // insert the string
|
---|
| 988 | // check for "global" :s/foo/bar/g
|
---|
| 989 | if (gflag == 1) {
|
---|
| 990 | if ((buf1 + strlen((char *) R)) < end_line(ls)) {
|
---|
| 991 | q = buf1 + strlen((char *) R);
|
---|
| 992 | goto vc4; // don't let q move past cur line
|
---|
| 993 | }
|
---|
| 994 | }
|
---|
| 995 | }
|
---|
| 996 | q = next_line(ls);
|
---|
| 997 | }
|
---|
| 998 | #endif /* CONFIG_FEATURE_VI_SEARCH */
|
---|
| 999 | } else if (strncasecmp((char *) cmd, "version", i) == 0) { // show software version
|
---|
| 1000 | psb("%s", vi_Version);
|
---|
| 1001 | } else if (strncasecmp((char *) cmd, "write", i) == 0 // write text to file
|
---|
| 1002 | || strncasecmp((char *) cmd, "wq", i) == 0
|
---|
| 1003 | || strncasecmp((char *) cmd, "wn", i) == 0
|
---|
| 1004 | || strncasecmp((char *) cmd, "x", i) == 0) {
|
---|
| 1005 | // is there a file name to write to?
|
---|
| 1006 | if (strlen((char *) args) > 0) {
|
---|
| 1007 | fn = args;
|
---|
| 1008 | }
|
---|
| 1009 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 1010 | if ((vi_readonly || readonly) && ! useforce) {
|
---|
| 1011 | psbs("\"%s\" File is read only", fn);
|
---|
| 1012 | goto vc3;
|
---|
| 1013 | }
|
---|
| 1014 | #endif /* CONFIG_FEATURE_VI_READONLY */
|
---|
| 1015 | // how many lines in text[]?
|
---|
| 1016 | li = count_lines(q, r);
|
---|
| 1017 | ch = r - q + 1;
|
---|
| 1018 | // see if file exists- if not, its just a new file request
|
---|
| 1019 | if (useforce) {
|
---|
| 1020 | // if "fn" is not write-able, chmod u+w
|
---|
| 1021 | // sprintf(syscmd, "chmod u+w %s", fn);
|
---|
| 1022 | // system(syscmd);
|
---|
| 1023 | forced = TRUE;
|
---|
| 1024 | }
|
---|
| 1025 | l = file_write(fn, q, r);
|
---|
| 1026 | if (useforce && forced) {
|
---|
| 1027 | // chmod u-w
|
---|
| 1028 | // sprintf(syscmd, "chmod u-w %s", fn);
|
---|
| 1029 | // system(syscmd);
|
---|
| 1030 | forced = FALSE;
|
---|
| 1031 | }
|
---|
| 1032 | if (l < 0) {
|
---|
| 1033 | if (l == -1)
|
---|
| 1034 | psbs("Write error: %s", strerror(errno));
|
---|
| 1035 | } else {
|
---|
| 1036 | psb("\"%s\" %dL, %dC", fn, li, l);
|
---|
| 1037 | if (q == text && r == end - 1 && l == ch) {
|
---|
| 1038 | file_modified = 0;
|
---|
| 1039 | last_file_modified = -1;
|
---|
| 1040 | }
|
---|
| 1041 | if ((cmd[0] == 'x' || cmd[1] == 'q' || cmd[1] == 'n' ||
|
---|
| 1042 | cmd[0] == 'X' || cmd[1] == 'Q' || cmd[1] == 'N')
|
---|
| 1043 | && l == ch) {
|
---|
| 1044 | editing = 0;
|
---|
| 1045 | }
|
---|
| 1046 | }
|
---|
| 1047 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 1048 | vc3:;
|
---|
| 1049 | #endif /* CONFIG_FEATURE_VI_READONLY */
|
---|
| 1050 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 1051 | } else if (strncasecmp((char *) cmd, "yank", i) == 0) { // yank lines
|
---|
| 1052 | if (b < 0) { // no addr given- use defaults
|
---|
| 1053 | q = begin_line(dot); // assume .,. for the range
|
---|
| 1054 | r = end_line(dot);
|
---|
| 1055 | }
|
---|
| 1056 | text_yank(q, r, YDreg);
|
---|
| 1057 | li = count_lines(q, r);
|
---|
| 1058 | psb("Yank %d lines (%d chars) into [%c]",
|
---|
| 1059 | li, strlen((char *) reg[YDreg]), what_reg());
|
---|
| 1060 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 1061 | } else {
|
---|
| 1062 | // cmd unknown
|
---|
| 1063 | ni((Byte *) cmd);
|
---|
| 1064 | }
|
---|
| 1065 | vc1:
|
---|
| 1066 | dot = bound_dot(dot); // make sure "dot" is valid
|
---|
| 1067 | return;
|
---|
| 1068 | #ifdef CONFIG_FEATURE_VI_SEARCH
|
---|
| 1069 | colon_s_fail:
|
---|
| 1070 | psb(":s expression missing delimiters");
|
---|
| 1071 | #endif
|
---|
| 1072 | }
|
---|
| 1073 |
|
---|
| 1074 | #endif /* CONFIG_FEATURE_VI_COLON */
|
---|
| 1075 |
|
---|
| 1076 | static void Hit_Return(void)
|
---|
| 1077 | {
|
---|
| 1078 | char c;
|
---|
| 1079 |
|
---|
| 1080 | standout_start(); // start reverse video
|
---|
| 1081 | write1("[Hit return to continue]");
|
---|
| 1082 | standout_end(); // end reverse video
|
---|
| 1083 | while ((c = get_one_char()) != '\n' && c != '\r') /*do nothing */
|
---|
| 1084 | ;
|
---|
| 1085 | redraw(TRUE); // force redraw all
|
---|
| 1086 | }
|
---|
| 1087 |
|
---|
| 1088 | //----- Synchronize the cursor to Dot --------------------------
|
---|
| 1089 | static void sync_cursor(Byte * d, int *row, int *col)
|
---|
| 1090 | {
|
---|
| 1091 | Byte *beg_cur; // begin and end of "d" line
|
---|
| 1092 | Byte *beg_scr, *end_scr; // begin and end of screen
|
---|
| 1093 | Byte *tp;
|
---|
| 1094 | int cnt, ro, co;
|
---|
| 1095 |
|
---|
| 1096 | beg_cur = begin_line(d); // first char of cur line
|
---|
| 1097 |
|
---|
| 1098 | beg_scr = end_scr = screenbegin; // first char of screen
|
---|
| 1099 | end_scr = end_screen(); // last char of screen
|
---|
| 1100 |
|
---|
| 1101 | if (beg_cur < screenbegin) {
|
---|
| 1102 | // "d" is before top line on screen
|
---|
| 1103 | // how many lines do we have to move
|
---|
| 1104 | cnt = count_lines(beg_cur, screenbegin);
|
---|
| 1105 | sc1:
|
---|
| 1106 | screenbegin = beg_cur;
|
---|
| 1107 | if (cnt > (rows - 1) / 2) {
|
---|
| 1108 | // we moved too many lines. put "dot" in middle of screen
|
---|
| 1109 | for (cnt = 0; cnt < (rows - 1) / 2; cnt++) {
|
---|
| 1110 | screenbegin = prev_line(screenbegin);
|
---|
| 1111 | }
|
---|
| 1112 | }
|
---|
| 1113 | } else if (beg_cur > end_scr) {
|
---|
| 1114 | // "d" is after bottom line on screen
|
---|
| 1115 | // how many lines do we have to move
|
---|
| 1116 | cnt = count_lines(end_scr, beg_cur);
|
---|
| 1117 | if (cnt > (rows - 1) / 2)
|
---|
| 1118 | goto sc1; // too many lines
|
---|
| 1119 | for (ro = 0; ro < cnt - 1; ro++) {
|
---|
| 1120 | // move screen begin the same amount
|
---|
| 1121 | screenbegin = next_line(screenbegin);
|
---|
| 1122 | // now, move the end of screen
|
---|
| 1123 | end_scr = next_line(end_scr);
|
---|
| 1124 | end_scr = end_line(end_scr);
|
---|
| 1125 | }
|
---|
| 1126 | }
|
---|
| 1127 | // "d" is on screen- find out which row
|
---|
| 1128 | tp = screenbegin;
|
---|
| 1129 | for (ro = 0; ro < rows - 1; ro++) { // drive "ro" to correct row
|
---|
| 1130 | if (tp == beg_cur)
|
---|
| 1131 | break;
|
---|
| 1132 | tp = next_line(tp);
|
---|
| 1133 | }
|
---|
| 1134 |
|
---|
| 1135 | // find out what col "d" is on
|
---|
| 1136 | co = 0;
|
---|
| 1137 | do { // drive "co" to correct column
|
---|
| 1138 | if (*tp == '\n' || *tp == '\0')
|
---|
| 1139 | break;
|
---|
| 1140 | if (*tp == '\t') {
|
---|
| 1141 | // 7 - (co % 8 )
|
---|
| 1142 | co += ((tabstop - 1) - (co % tabstop));
|
---|
| 1143 | } else if (*tp < ' ' || *tp == 127) {
|
---|
| 1144 | co++; // display as ^X, use 2 columns
|
---|
| 1145 | }
|
---|
| 1146 | } while (tp++ < d && ++co);
|
---|
| 1147 |
|
---|
| 1148 | // "co" is the column where "dot" is.
|
---|
| 1149 | // The screen has "columns" columns.
|
---|
| 1150 | // The currently displayed columns are 0+offset -- columns+ofset
|
---|
| 1151 | // |-------------------------------------------------------------|
|
---|
| 1152 | // ^ ^ ^
|
---|
| 1153 | // offset | |------- columns ----------------|
|
---|
| 1154 | //
|
---|
| 1155 | // If "co" is already in this range then we do not have to adjust offset
|
---|
| 1156 | // but, we do have to subtract the "offset" bias from "co".
|
---|
| 1157 | // If "co" is outside this range then we have to change "offset".
|
---|
| 1158 | // If the first char of a line is a tab the cursor will try to stay
|
---|
| 1159 | // in column 7, but we have to set offset to 0.
|
---|
| 1160 |
|
---|
| 1161 | if (co < 0 + offset) {
|
---|
| 1162 | offset = co;
|
---|
| 1163 | }
|
---|
| 1164 | if (co >= columns + offset) {
|
---|
| 1165 | offset = co - columns + 1;
|
---|
| 1166 | }
|
---|
| 1167 | // if the first char of the line is a tab, and "dot" is sitting on it
|
---|
| 1168 | // force offset to 0.
|
---|
| 1169 | if (d == beg_cur && *d == '\t') {
|
---|
| 1170 | offset = 0;
|
---|
| 1171 | }
|
---|
| 1172 | co -= offset;
|
---|
| 1173 |
|
---|
| 1174 | *row = ro;
|
---|
| 1175 | *col = co;
|
---|
| 1176 | }
|
---|
| 1177 |
|
---|
| 1178 | //----- Text Movement Routines ---------------------------------
|
---|
| 1179 | static Byte *begin_line(Byte * p) // return pointer to first char cur line
|
---|
| 1180 | {
|
---|
| 1181 | while (p > text && p[-1] != '\n')
|
---|
| 1182 | p--; // go to cur line B-o-l
|
---|
| 1183 | return (p);
|
---|
| 1184 | }
|
---|
| 1185 |
|
---|
| 1186 | static Byte *end_line(Byte * p) // return pointer to NL of cur line line
|
---|
| 1187 | {
|
---|
| 1188 | while (p < end - 1 && *p != '\n')
|
---|
| 1189 | p++; // go to cur line E-o-l
|
---|
| 1190 | return (p);
|
---|
| 1191 | }
|
---|
| 1192 |
|
---|
| 1193 | static inline Byte *dollar_line(Byte * p) // return pointer to just before NL line
|
---|
| 1194 | {
|
---|
| 1195 | while (p < end - 1 && *p != '\n')
|
---|
| 1196 | p++; // go to cur line E-o-l
|
---|
| 1197 | // Try to stay off of the Newline
|
---|
| 1198 | if (*p == '\n' && (p - begin_line(p)) > 0)
|
---|
| 1199 | p--;
|
---|
| 1200 | return (p);
|
---|
| 1201 | }
|
---|
| 1202 |
|
---|
| 1203 | static Byte *prev_line(Byte * p) // return pointer first char prev line
|
---|
| 1204 | {
|
---|
| 1205 | p = begin_line(p); // goto begining of cur line
|
---|
| 1206 | if (p[-1] == '\n' && p > text)
|
---|
| 1207 | p--; // step to prev line
|
---|
| 1208 | p = begin_line(p); // goto begining of prev line
|
---|
| 1209 | return (p);
|
---|
| 1210 | }
|
---|
| 1211 |
|
---|
| 1212 | static Byte *next_line(Byte * p) // return pointer first char next line
|
---|
| 1213 | {
|
---|
| 1214 | p = end_line(p);
|
---|
| 1215 | if (*p == '\n' && p < end - 1)
|
---|
| 1216 | p++; // step to next line
|
---|
| 1217 | return (p);
|
---|
| 1218 | }
|
---|
| 1219 |
|
---|
| 1220 | //----- Text Information Routines ------------------------------
|
---|
| 1221 | static Byte *end_screen(void)
|
---|
| 1222 | {
|
---|
| 1223 | Byte *q;
|
---|
| 1224 | int cnt;
|
---|
| 1225 |
|
---|
| 1226 | // find new bottom line
|
---|
| 1227 | q = screenbegin;
|
---|
| 1228 | for (cnt = 0; cnt < rows - 2; cnt++)
|
---|
| 1229 | q = next_line(q);
|
---|
| 1230 | q = end_line(q);
|
---|
| 1231 | return (q);
|
---|
| 1232 | }
|
---|
| 1233 |
|
---|
| 1234 | static int count_lines(Byte * start, Byte * stop) // count line from start to stop
|
---|
| 1235 | {
|
---|
| 1236 | Byte *q;
|
---|
| 1237 | int cnt;
|
---|
| 1238 |
|
---|
| 1239 | if (stop < start) { // start and stop are backwards- reverse them
|
---|
| 1240 | q = start;
|
---|
| 1241 | start = stop;
|
---|
| 1242 | stop = q;
|
---|
| 1243 | }
|
---|
| 1244 | cnt = 0;
|
---|
| 1245 | stop = end_line(stop); // get to end of this line
|
---|
| 1246 | for (q = start; q <= stop && q <= end - 1; q++) {
|
---|
| 1247 | if (*q == '\n')
|
---|
| 1248 | cnt++;
|
---|
| 1249 | }
|
---|
| 1250 | return (cnt);
|
---|
| 1251 | }
|
---|
| 1252 |
|
---|
| 1253 | static Byte *find_line(int li) // find begining of line #li
|
---|
| 1254 | {
|
---|
| 1255 | Byte *q;
|
---|
| 1256 |
|
---|
| 1257 | for (q = text; li > 1; li--) {
|
---|
| 1258 | q = next_line(q);
|
---|
| 1259 | }
|
---|
| 1260 | return (q);
|
---|
| 1261 | }
|
---|
| 1262 |
|
---|
| 1263 | //----- Dot Movement Routines ----------------------------------
|
---|
| 1264 | static void dot_left(void)
|
---|
| 1265 | {
|
---|
| 1266 | if (dot > text && dot[-1] != '\n')
|
---|
| 1267 | dot--;
|
---|
| 1268 | }
|
---|
| 1269 |
|
---|
| 1270 | static void dot_right(void)
|
---|
| 1271 | {
|
---|
| 1272 | if (dot < end - 1 && *dot != '\n')
|
---|
| 1273 | dot++;
|
---|
| 1274 | }
|
---|
| 1275 |
|
---|
| 1276 | static void dot_begin(void)
|
---|
| 1277 | {
|
---|
| 1278 | dot = begin_line(dot); // return pointer to first char cur line
|
---|
| 1279 | }
|
---|
| 1280 |
|
---|
| 1281 | static void dot_end(void)
|
---|
| 1282 | {
|
---|
| 1283 | dot = end_line(dot); // return pointer to last char cur line
|
---|
| 1284 | }
|
---|
| 1285 |
|
---|
| 1286 | static Byte *move_to_col(Byte * p, int l)
|
---|
| 1287 | {
|
---|
| 1288 | int co;
|
---|
| 1289 |
|
---|
| 1290 | p = begin_line(p);
|
---|
| 1291 | co = 0;
|
---|
| 1292 | do {
|
---|
| 1293 | if (*p == '\n' || *p == '\0')
|
---|
| 1294 | break;
|
---|
| 1295 | if (*p == '\t') {
|
---|
| 1296 | // 7 - (co % 8 )
|
---|
| 1297 | co += ((tabstop - 1) - (co % tabstop));
|
---|
| 1298 | } else if (*p < ' ' || *p == 127) {
|
---|
| 1299 | co++; // display as ^X, use 2 columns
|
---|
| 1300 | }
|
---|
| 1301 | } while (++co <= l && p++ < end);
|
---|
| 1302 | return (p);
|
---|
| 1303 | }
|
---|
| 1304 |
|
---|
| 1305 | static void dot_next(void)
|
---|
| 1306 | {
|
---|
| 1307 | dot = next_line(dot);
|
---|
| 1308 | }
|
---|
| 1309 |
|
---|
| 1310 | static void dot_prev(void)
|
---|
| 1311 | {
|
---|
| 1312 | dot = prev_line(dot);
|
---|
| 1313 | }
|
---|
| 1314 |
|
---|
| 1315 | static void dot_scroll(int cnt, int dir)
|
---|
| 1316 | {
|
---|
| 1317 | Byte *q;
|
---|
| 1318 |
|
---|
| 1319 | for (; cnt > 0; cnt--) {
|
---|
| 1320 | if (dir < 0) {
|
---|
| 1321 | // scroll Backwards
|
---|
| 1322 | // ctrl-Y scroll up one line
|
---|
| 1323 | screenbegin = prev_line(screenbegin);
|
---|
| 1324 | } else {
|
---|
| 1325 | // scroll Forwards
|
---|
| 1326 | // ctrl-E scroll down one line
|
---|
| 1327 | screenbegin = next_line(screenbegin);
|
---|
| 1328 | }
|
---|
| 1329 | }
|
---|
| 1330 | // make sure "dot" stays on the screen so we dont scroll off
|
---|
| 1331 | if (dot < screenbegin)
|
---|
| 1332 | dot = screenbegin;
|
---|
| 1333 | q = end_screen(); // find new bottom line
|
---|
| 1334 | if (dot > q)
|
---|
| 1335 | dot = begin_line(q); // is dot is below bottom line?
|
---|
| 1336 | dot_skip_over_ws();
|
---|
| 1337 | }
|
---|
| 1338 |
|
---|
| 1339 | static void dot_skip_over_ws(void)
|
---|
| 1340 | {
|
---|
| 1341 | // skip WS
|
---|
| 1342 | while (isspace(*dot) && *dot != '\n' && dot < end - 1)
|
---|
| 1343 | dot++;
|
---|
| 1344 | }
|
---|
| 1345 |
|
---|
| 1346 | static void dot_delete(void) // delete the char at 'dot'
|
---|
| 1347 | {
|
---|
| 1348 | (void) text_hole_delete(dot, dot);
|
---|
| 1349 | }
|
---|
| 1350 |
|
---|
| 1351 | static Byte *bound_dot(Byte * p) // make sure text[0] <= P < "end"
|
---|
| 1352 | {
|
---|
| 1353 | if (p >= end && end > text) {
|
---|
| 1354 | p = end - 1;
|
---|
| 1355 | indicate_error('1');
|
---|
| 1356 | }
|
---|
| 1357 | if (p < text) {
|
---|
| 1358 | p = text;
|
---|
| 1359 | indicate_error('2');
|
---|
| 1360 | }
|
---|
| 1361 | return (p);
|
---|
| 1362 | }
|
---|
| 1363 |
|
---|
| 1364 | //----- Helper Utility Routines --------------------------------
|
---|
| 1365 |
|
---|
| 1366 | //----------------------------------------------------------------
|
---|
| 1367 | //----- Char Routines --------------------------------------------
|
---|
| 1368 | /* Chars that are part of a word-
|
---|
| 1369 | * 0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
|
---|
| 1370 | * Chars that are Not part of a word (stoppers)
|
---|
| 1371 | * !"#$%&'()*+,-./:;<=>?@[\]^`{|}~
|
---|
| 1372 | * Chars that are WhiteSpace
|
---|
| 1373 | * TAB NEWLINE VT FF RETURN SPACE
|
---|
| 1374 | * DO NOT COUNT NEWLINE AS WHITESPACE
|
---|
| 1375 | */
|
---|
| 1376 |
|
---|
| 1377 | static Byte *new_screen(int ro, int co)
|
---|
| 1378 | {
|
---|
| 1379 | int li;
|
---|
| 1380 |
|
---|
| 1381 | free(screen);
|
---|
| 1382 | screensize = ro * co + 8;
|
---|
| 1383 | screen = (Byte *) xmalloc(screensize);
|
---|
| 1384 | // initialize the new screen. assume this will be a empty file.
|
---|
| 1385 | screen_erase();
|
---|
| 1386 | // non-existent text[] lines start with a tilde (~).
|
---|
| 1387 | for (li = 1; li < ro - 1; li++) {
|
---|
| 1388 | screen[(li * co) + 0] = '~';
|
---|
| 1389 | }
|
---|
| 1390 | return (screen);
|
---|
| 1391 | }
|
---|
| 1392 |
|
---|
| 1393 | static Byte *new_text(int size)
|
---|
| 1394 | {
|
---|
| 1395 | if (size < 10240)
|
---|
| 1396 | size = 10240; // have a minimum size for new files
|
---|
| 1397 | free(text);
|
---|
| 1398 | text = (Byte *) xmalloc(size + 8);
|
---|
| 1399 | memset(text, '\0', size); // clear new text[]
|
---|
| 1400 | //text += 4; // leave some room for "oops"
|
---|
| 1401 | textend = text + size - 1;
|
---|
| 1402 | //textend -= 4; // leave some root for "oops"
|
---|
| 1403 | return (text);
|
---|
| 1404 | }
|
---|
| 1405 |
|
---|
| 1406 | #ifdef CONFIG_FEATURE_VI_SEARCH
|
---|
| 1407 | static int mycmp(Byte * s1, Byte * s2, int len)
|
---|
| 1408 | {
|
---|
| 1409 | int i;
|
---|
| 1410 |
|
---|
| 1411 | i = strncmp((char *) s1, (char *) s2, len);
|
---|
| 1412 | #ifdef CONFIG_FEATURE_VI_SETOPTS
|
---|
| 1413 | if (ignorecase) {
|
---|
| 1414 | i = strncasecmp((char *) s1, (char *) s2, len);
|
---|
| 1415 | }
|
---|
| 1416 | #endif /* CONFIG_FEATURE_VI_SETOPTS */
|
---|
| 1417 | return (i);
|
---|
| 1418 | }
|
---|
| 1419 |
|
---|
| 1420 | static Byte *char_search(Byte * p, Byte * pat, int dir, int range) // search for pattern starting at p
|
---|
| 1421 | {
|
---|
| 1422 | #ifndef REGEX_SEARCH
|
---|
| 1423 | Byte *start, *stop;
|
---|
| 1424 | int len;
|
---|
| 1425 |
|
---|
| 1426 | len = strlen((char *) pat);
|
---|
| 1427 | if (dir == FORWARD) {
|
---|
| 1428 | stop = end - 1; // assume range is p - end-1
|
---|
| 1429 | if (range == LIMITED)
|
---|
| 1430 | stop = next_line(p); // range is to next line
|
---|
| 1431 | for (start = p; start < stop; start++) {
|
---|
| 1432 | if (mycmp(start, pat, len) == 0) {
|
---|
| 1433 | return (start);
|
---|
| 1434 | }
|
---|
| 1435 | }
|
---|
| 1436 | } else if (dir == BACK) {
|
---|
| 1437 | stop = text; // assume range is text - p
|
---|
| 1438 | if (range == LIMITED)
|
---|
| 1439 | stop = prev_line(p); // range is to prev line
|
---|
| 1440 | for (start = p - len; start >= stop; start--) {
|
---|
| 1441 | if (mycmp(start, pat, len) == 0) {
|
---|
| 1442 | return (start);
|
---|
| 1443 | }
|
---|
| 1444 | }
|
---|
| 1445 | }
|
---|
| 1446 | // pattern not found
|
---|
| 1447 | return (NULL);
|
---|
| 1448 | #else /*REGEX_SEARCH */
|
---|
| 1449 | char *q;
|
---|
| 1450 | struct re_pattern_buffer preg;
|
---|
| 1451 | int i;
|
---|
| 1452 | int size, range;
|
---|
| 1453 |
|
---|
| 1454 | re_syntax_options = RE_SYNTAX_POSIX_EXTENDED;
|
---|
| 1455 | preg.translate = 0;
|
---|
| 1456 | preg.fastmap = 0;
|
---|
| 1457 | preg.buffer = 0;
|
---|
| 1458 | preg.allocated = 0;
|
---|
| 1459 |
|
---|
| 1460 | // assume a LIMITED forward search
|
---|
| 1461 | q = next_line(p);
|
---|
| 1462 | q = end_line(q);
|
---|
| 1463 | q = end - 1;
|
---|
| 1464 | if (dir == BACK) {
|
---|
| 1465 | q = prev_line(p);
|
---|
| 1466 | q = text;
|
---|
| 1467 | }
|
---|
| 1468 | // count the number of chars to search over, forward or backward
|
---|
| 1469 | size = q - p;
|
---|
| 1470 | if (size < 0)
|
---|
| 1471 | size = p - q;
|
---|
| 1472 | // RANGE could be negative if we are searching backwards
|
---|
| 1473 | range = q - p;
|
---|
| 1474 |
|
---|
| 1475 | q = (char *) re_compile_pattern(pat, strlen((char *) pat), &preg);
|
---|
| 1476 | if (q != 0) {
|
---|
| 1477 | // The pattern was not compiled
|
---|
| 1478 | psbs("bad search pattern: \"%s\": %s", pat, q);
|
---|
| 1479 | i = 0; // return p if pattern not compiled
|
---|
| 1480 | goto cs1;
|
---|
| 1481 | }
|
---|
| 1482 |
|
---|
| 1483 | q = p;
|
---|
| 1484 | if (range < 0) {
|
---|
| 1485 | q = p - size;
|
---|
| 1486 | if (q < text)
|
---|
| 1487 | q = text;
|
---|
| 1488 | }
|
---|
| 1489 | // search for the compiled pattern, preg, in p[]
|
---|
| 1490 | // range < 0- search backward
|
---|
| 1491 | // range > 0- search forward
|
---|
| 1492 | // 0 < start < size
|
---|
| 1493 | // re_search() < 0 not found or error
|
---|
| 1494 | // re_search() > 0 index of found pattern
|
---|
| 1495 | // struct pattern char int int int struct reg
|
---|
| 1496 | // re_search (*pattern_buffer, *string, size, start, range, *regs)
|
---|
| 1497 | i = re_search(&preg, q, size, 0, range, 0);
|
---|
| 1498 | if (i == -1) {
|
---|
| 1499 | p = 0;
|
---|
| 1500 | i = 0; // return NULL if pattern not found
|
---|
| 1501 | }
|
---|
| 1502 | cs1:
|
---|
| 1503 | if (dir == FORWARD) {
|
---|
| 1504 | p = p + i;
|
---|
| 1505 | } else {
|
---|
| 1506 | p = p - i;
|
---|
| 1507 | }
|
---|
| 1508 | return (p);
|
---|
| 1509 | #endif /*REGEX_SEARCH */
|
---|
| 1510 | }
|
---|
| 1511 | #endif /* CONFIG_FEATURE_VI_SEARCH */
|
---|
| 1512 |
|
---|
| 1513 | static Byte *char_insert(Byte * p, Byte c) // insert the char c at 'p'
|
---|
| 1514 | {
|
---|
| 1515 | if (c == 22) { // Is this an ctrl-V?
|
---|
| 1516 | p = stupid_insert(p, '^'); // use ^ to indicate literal next
|
---|
| 1517 | p--; // backup onto ^
|
---|
| 1518 | refresh(FALSE); // show the ^
|
---|
| 1519 | c = get_one_char();
|
---|
| 1520 | *p = c;
|
---|
| 1521 | p++;
|
---|
| 1522 | file_modified++; // has the file been modified
|
---|
| 1523 | } else if (c == 27) { // Is this an ESC?
|
---|
| 1524 | cmd_mode = 0;
|
---|
| 1525 | cmdcnt = 0;
|
---|
| 1526 | end_cmd_q(); // stop adding to q
|
---|
| 1527 | last_status_cksum = 0; // force status update
|
---|
| 1528 | if ((p[-1] != '\n') && (dot>text)) {
|
---|
| 1529 | p--;
|
---|
| 1530 | }
|
---|
| 1531 | } else if (c == erase_char || c == 8 || c == 127) { // Is this a BS
|
---|
| 1532 | // 123456789
|
---|
| 1533 | if ((p[-1] != '\n') && (dot>text)) {
|
---|
| 1534 | p--;
|
---|
| 1535 | p = text_hole_delete(p, p); // shrink buffer 1 char
|
---|
| 1536 | }
|
---|
| 1537 | } else {
|
---|
| 1538 | // insert a char into text[]
|
---|
| 1539 | Byte *sp; // "save p"
|
---|
| 1540 |
|
---|
| 1541 | if (c == 13)
|
---|
| 1542 | c = '\n'; // translate \r to \n
|
---|
| 1543 | sp = p; // remember addr of insert
|
---|
| 1544 | p = stupid_insert(p, c); // insert the char
|
---|
| 1545 | #ifdef CONFIG_FEATURE_VI_SETOPTS
|
---|
| 1546 | if (showmatch && strchr(")]}", *sp) != NULL) {
|
---|
| 1547 | showmatching(sp);
|
---|
| 1548 | }
|
---|
| 1549 | if (autoindent && c == '\n') { // auto indent the new line
|
---|
| 1550 | Byte *q;
|
---|
| 1551 |
|
---|
| 1552 | q = prev_line(p); // use prev line as templet
|
---|
| 1553 | for (; isblnk(*q); q++) {
|
---|
| 1554 | p = stupid_insert(p, *q); // insert the char
|
---|
| 1555 | }
|
---|
| 1556 | }
|
---|
| 1557 | #endif /* CONFIG_FEATURE_VI_SETOPTS */
|
---|
| 1558 | }
|
---|
| 1559 | return (p);
|
---|
| 1560 | }
|
---|
| 1561 |
|
---|
| 1562 | static Byte *stupid_insert(Byte * p, Byte c) // stupidly insert the char c at 'p'
|
---|
| 1563 | {
|
---|
| 1564 | p = text_hole_make(p, 1);
|
---|
| 1565 | if (p != 0) {
|
---|
| 1566 | *p = c;
|
---|
| 1567 | file_modified++; // has the file been modified
|
---|
| 1568 | p++;
|
---|
| 1569 | }
|
---|
| 1570 | return (p);
|
---|
| 1571 | }
|
---|
| 1572 |
|
---|
| 1573 | static Byte find_range(Byte ** start, Byte ** stop, Byte c)
|
---|
| 1574 | {
|
---|
| 1575 | Byte *save_dot, *p, *q;
|
---|
| 1576 | int cnt;
|
---|
| 1577 |
|
---|
| 1578 | save_dot = dot;
|
---|
| 1579 | p = q = dot;
|
---|
| 1580 |
|
---|
| 1581 | if (strchr("cdy><", c)) {
|
---|
| 1582 | // these cmds operate on whole lines
|
---|
| 1583 | p = q = begin_line(p);
|
---|
| 1584 | for (cnt = 1; cnt < cmdcnt; cnt++) {
|
---|
| 1585 | q = next_line(q);
|
---|
| 1586 | }
|
---|
| 1587 | q = end_line(q);
|
---|
| 1588 | } else if (strchr("^%$0bBeEft", c)) {
|
---|
| 1589 | // These cmds operate on char positions
|
---|
| 1590 | do_cmd(c); // execute movement cmd
|
---|
| 1591 | q = dot;
|
---|
| 1592 | } else if (strchr("wW", c)) {
|
---|
| 1593 | do_cmd(c); // execute movement cmd
|
---|
| 1594 | // if we are at the next word's first char
|
---|
| 1595 | // step back one char
|
---|
| 1596 | // but check the possibilities when it is true
|
---|
| 1597 | if (dot > text && ((isspace(dot[-1]) && !isspace(dot[0]))
|
---|
| 1598 | || (ispunct(dot[-1]) && !ispunct(dot[0]))
|
---|
| 1599 | || (isalnum(dot[-1]) && !isalnum(dot[0]))))
|
---|
| 1600 | dot--; // move back off of next word
|
---|
| 1601 | if (dot > text && *dot == '\n')
|
---|
| 1602 | dot--; // stay off NL
|
---|
| 1603 | q = dot;
|
---|
| 1604 | } else if (strchr("H-k{", c)) {
|
---|
| 1605 | // these operate on multi-lines backwards
|
---|
| 1606 | q = end_line(dot); // find NL
|
---|
| 1607 | do_cmd(c); // execute movement cmd
|
---|
| 1608 | dot_begin();
|
---|
| 1609 | p = dot;
|
---|
| 1610 | } else if (strchr("L+j}\r\n", c)) {
|
---|
| 1611 | // these operate on multi-lines forwards
|
---|
| 1612 | p = begin_line(dot);
|
---|
| 1613 | do_cmd(c); // execute movement cmd
|
---|
| 1614 | dot_end(); // find NL
|
---|
| 1615 | q = dot;
|
---|
| 1616 | } else {
|
---|
| 1617 | c = 27; // error- return an ESC char
|
---|
| 1618 | //break;
|
---|
| 1619 | }
|
---|
| 1620 | *start = p;
|
---|
| 1621 | *stop = q;
|
---|
| 1622 | if (q < p) {
|
---|
| 1623 | *start = q;
|
---|
| 1624 | *stop = p;
|
---|
| 1625 | }
|
---|
| 1626 | dot = save_dot;
|
---|
| 1627 | return (c);
|
---|
| 1628 | }
|
---|
| 1629 |
|
---|
| 1630 | static int st_test(Byte * p, int type, int dir, Byte * tested)
|
---|
| 1631 | {
|
---|
| 1632 | Byte c, c0, ci;
|
---|
| 1633 | int test, inc;
|
---|
| 1634 |
|
---|
| 1635 | inc = dir;
|
---|
| 1636 | c = c0 = p[0];
|
---|
| 1637 | ci = p[inc];
|
---|
| 1638 | test = 0;
|
---|
| 1639 |
|
---|
| 1640 | if (type == S_BEFORE_WS) {
|
---|
| 1641 | c = ci;
|
---|
| 1642 | test = ((!isspace(c)) || c == '\n');
|
---|
| 1643 | }
|
---|
| 1644 | if (type == S_TO_WS) {
|
---|
| 1645 | c = c0;
|
---|
| 1646 | test = ((!isspace(c)) || c == '\n');
|
---|
| 1647 | }
|
---|
| 1648 | if (type == S_OVER_WS) {
|
---|
| 1649 | c = c0;
|
---|
| 1650 | test = ((isspace(c)));
|
---|
| 1651 | }
|
---|
| 1652 | if (type == S_END_PUNCT) {
|
---|
| 1653 | c = ci;
|
---|
| 1654 | test = ((ispunct(c)));
|
---|
| 1655 | }
|
---|
| 1656 | if (type == S_END_ALNUM) {
|
---|
| 1657 | c = ci;
|
---|
| 1658 | test = ((isalnum(c)) || c == '_');
|
---|
| 1659 | }
|
---|
| 1660 | *tested = c;
|
---|
| 1661 | return (test);
|
---|
| 1662 | }
|
---|
| 1663 |
|
---|
| 1664 | static Byte *skip_thing(Byte * p, int linecnt, int dir, int type)
|
---|
| 1665 | {
|
---|
| 1666 | Byte c;
|
---|
| 1667 |
|
---|
| 1668 | while (st_test(p, type, dir, &c)) {
|
---|
| 1669 | // make sure we limit search to correct number of lines
|
---|
| 1670 | if (c == '\n' && --linecnt < 1)
|
---|
| 1671 | break;
|
---|
| 1672 | if (dir >= 0 && p >= end - 1)
|
---|
| 1673 | break;
|
---|
| 1674 | if (dir < 0 && p <= text)
|
---|
| 1675 | break;
|
---|
| 1676 | p += dir; // move to next char
|
---|
| 1677 | }
|
---|
| 1678 | return (p);
|
---|
| 1679 | }
|
---|
| 1680 |
|
---|
| 1681 | // find matching char of pair () [] {}
|
---|
| 1682 | static Byte *find_pair(Byte * p, Byte c)
|
---|
| 1683 | {
|
---|
| 1684 | Byte match, *q;
|
---|
| 1685 | int dir, level;
|
---|
| 1686 |
|
---|
| 1687 | match = ')';
|
---|
| 1688 | level = 1;
|
---|
| 1689 | dir = 1; // assume forward
|
---|
| 1690 | switch (c) {
|
---|
| 1691 | case '(':
|
---|
| 1692 | match = ')';
|
---|
| 1693 | break;
|
---|
| 1694 | case '[':
|
---|
| 1695 | match = ']';
|
---|
| 1696 | break;
|
---|
| 1697 | case '{':
|
---|
| 1698 | match = '}';
|
---|
| 1699 | break;
|
---|
| 1700 | case ')':
|
---|
| 1701 | match = '(';
|
---|
| 1702 | dir = -1;
|
---|
| 1703 | break;
|
---|
| 1704 | case ']':
|
---|
| 1705 | match = '[';
|
---|
| 1706 | dir = -1;
|
---|
| 1707 | break;
|
---|
| 1708 | case '}':
|
---|
| 1709 | match = '{';
|
---|
| 1710 | dir = -1;
|
---|
| 1711 | break;
|
---|
| 1712 | }
|
---|
| 1713 | for (q = p + dir; text <= q && q < end; q += dir) {
|
---|
| 1714 | // look for match, count levels of pairs (( ))
|
---|
| 1715 | if (*q == c)
|
---|
| 1716 | level++; // increase pair levels
|
---|
| 1717 | if (*q == match)
|
---|
| 1718 | level--; // reduce pair level
|
---|
| 1719 | if (level == 0)
|
---|
| 1720 | break; // found matching pair
|
---|
| 1721 | }
|
---|
| 1722 | if (level != 0)
|
---|
| 1723 | q = NULL; // indicate no match
|
---|
| 1724 | return (q);
|
---|
| 1725 | }
|
---|
| 1726 |
|
---|
| 1727 | #ifdef CONFIG_FEATURE_VI_SETOPTS
|
---|
| 1728 | // show the matching char of a pair, () [] {}
|
---|
| 1729 | static void showmatching(Byte * p)
|
---|
| 1730 | {
|
---|
| 1731 | Byte *q, *save_dot;
|
---|
| 1732 |
|
---|
| 1733 | // we found half of a pair
|
---|
| 1734 | q = find_pair(p, *p); // get loc of matching char
|
---|
| 1735 | if (q == NULL) {
|
---|
| 1736 | indicate_error('3'); // no matching char
|
---|
| 1737 | } else {
|
---|
| 1738 | // "q" now points to matching pair
|
---|
| 1739 | save_dot = dot; // remember where we are
|
---|
| 1740 | dot = q; // go to new loc
|
---|
| 1741 | refresh(FALSE); // let the user see it
|
---|
| 1742 | (void) mysleep(40); // give user some time
|
---|
| 1743 | dot = save_dot; // go back to old loc
|
---|
| 1744 | refresh(FALSE);
|
---|
| 1745 | }
|
---|
| 1746 | }
|
---|
| 1747 | #endif /* CONFIG_FEATURE_VI_SETOPTS */
|
---|
| 1748 |
|
---|
| 1749 | // open a hole in text[]
|
---|
| 1750 | static Byte *text_hole_make(Byte * p, int size) // at "p", make a 'size' byte hole
|
---|
| 1751 | {
|
---|
| 1752 | Byte *src, *dest;
|
---|
| 1753 | int cnt;
|
---|
| 1754 |
|
---|
| 1755 | if (size <= 0)
|
---|
| 1756 | goto thm0;
|
---|
| 1757 | src = p;
|
---|
| 1758 | dest = p + size;
|
---|
| 1759 | cnt = end - src; // the rest of buffer
|
---|
| 1760 | if (memmove(dest, src, cnt) != dest) {
|
---|
| 1761 | psbs("can't create room for new characters");
|
---|
| 1762 | }
|
---|
| 1763 | memset(p, ' ', size); // clear new hole
|
---|
| 1764 | end = end + size; // adjust the new END
|
---|
| 1765 | file_modified++; // has the file been modified
|
---|
| 1766 | thm0:
|
---|
| 1767 | return (p);
|
---|
| 1768 | }
|
---|
| 1769 |
|
---|
| 1770 | // close a hole in text[]
|
---|
| 1771 | static Byte *text_hole_delete(Byte * p, Byte * q) // delete "p" thru "q", inclusive
|
---|
| 1772 | {
|
---|
| 1773 | Byte *src, *dest;
|
---|
| 1774 | int cnt, hole_size;
|
---|
| 1775 |
|
---|
| 1776 | // move forwards, from beginning
|
---|
| 1777 | // assume p <= q
|
---|
| 1778 | src = q + 1;
|
---|
| 1779 | dest = p;
|
---|
| 1780 | if (q < p) { // they are backward- swap them
|
---|
| 1781 | src = p + 1;
|
---|
| 1782 | dest = q;
|
---|
| 1783 | }
|
---|
| 1784 | hole_size = q - p + 1;
|
---|
| 1785 | cnt = end - src;
|
---|
| 1786 | if (src < text || src > end)
|
---|
| 1787 | goto thd0;
|
---|
| 1788 | if (dest < text || dest >= end)
|
---|
| 1789 | goto thd0;
|
---|
| 1790 | if (src >= end)
|
---|
| 1791 | goto thd_atend; // just delete the end of the buffer
|
---|
| 1792 | if (memmove(dest, src, cnt) != dest) {
|
---|
| 1793 | psbs("can't delete the character");
|
---|
| 1794 | }
|
---|
| 1795 | thd_atend:
|
---|
| 1796 | end = end - hole_size; // adjust the new END
|
---|
| 1797 | if (dest >= end)
|
---|
| 1798 | dest = end - 1; // make sure dest in below end-1
|
---|
| 1799 | if (end <= text)
|
---|
| 1800 | dest = end = text; // keep pointers valid
|
---|
| 1801 | file_modified++; // has the file been modified
|
---|
| 1802 | thd0:
|
---|
| 1803 | return (dest);
|
---|
| 1804 | }
|
---|
| 1805 |
|
---|
| 1806 | // copy text into register, then delete text.
|
---|
| 1807 | // if dist <= 0, do not include, or go past, a NewLine
|
---|
| 1808 | //
|
---|
| 1809 | static Byte *yank_delete(Byte * start, Byte * stop, int dist, int yf)
|
---|
| 1810 | {
|
---|
| 1811 | Byte *p;
|
---|
| 1812 |
|
---|
| 1813 | // make sure start <= stop
|
---|
| 1814 | if (start > stop) {
|
---|
| 1815 | // they are backwards, reverse them
|
---|
| 1816 | p = start;
|
---|
| 1817 | start = stop;
|
---|
| 1818 | stop = p;
|
---|
| 1819 | }
|
---|
| 1820 | if (dist <= 0) {
|
---|
| 1821 | // we can not cross NL boundaries
|
---|
| 1822 | p = start;
|
---|
| 1823 | if (*p == '\n')
|
---|
| 1824 | return (p);
|
---|
| 1825 | // dont go past a NewLine
|
---|
| 1826 | for (; p + 1 <= stop; p++) {
|
---|
| 1827 | if (p[1] == '\n') {
|
---|
| 1828 | stop = p; // "stop" just before NewLine
|
---|
| 1829 | break;
|
---|
| 1830 | }
|
---|
| 1831 | }
|
---|
| 1832 | }
|
---|
| 1833 | p = start;
|
---|
| 1834 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 1835 | text_yank(start, stop, YDreg);
|
---|
| 1836 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 1837 | if (yf == YANKDEL) {
|
---|
| 1838 | p = text_hole_delete(start, stop);
|
---|
| 1839 | } // delete lines
|
---|
| 1840 | return (p);
|
---|
| 1841 | }
|
---|
| 1842 |
|
---|
| 1843 | static void show_help(void)
|
---|
| 1844 | {
|
---|
| 1845 | puts("These features are available:"
|
---|
| 1846 | #ifdef CONFIG_FEATURE_VI_SEARCH
|
---|
| 1847 | "\n\tPattern searches with / and ?"
|
---|
| 1848 | #endif /* CONFIG_FEATURE_VI_SEARCH */
|
---|
| 1849 | #ifdef CONFIG_FEATURE_VI_DOT_CMD
|
---|
| 1850 | "\n\tLast command repeat with \'.\'"
|
---|
| 1851 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
---|
| 1852 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 1853 | "\n\tLine marking with 'x"
|
---|
| 1854 | "\n\tNamed buffers with \"x"
|
---|
| 1855 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 1856 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 1857 | "\n\tReadonly if vi is called as \"view\""
|
---|
| 1858 | "\n\tReadonly with -R command line arg"
|
---|
| 1859 | #endif /* CONFIG_FEATURE_VI_READONLY */
|
---|
| 1860 | #ifdef CONFIG_FEATURE_VI_SET
|
---|
| 1861 | "\n\tSome colon mode commands with \':\'"
|
---|
| 1862 | #endif /* CONFIG_FEATURE_VI_SET */
|
---|
| 1863 | #ifdef CONFIG_FEATURE_VI_SETOPTS
|
---|
| 1864 | "\n\tSettable options with \":set\""
|
---|
| 1865 | #endif /* CONFIG_FEATURE_VI_SETOPTS */
|
---|
| 1866 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS
|
---|
| 1867 | "\n\tSignal catching- ^C"
|
---|
| 1868 | "\n\tJob suspend and resume with ^Z"
|
---|
| 1869 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */
|
---|
| 1870 | #ifdef CONFIG_FEATURE_VI_WIN_RESIZE
|
---|
| 1871 | "\n\tAdapt to window re-sizes"
|
---|
| 1872 | #endif /* CONFIG_FEATURE_VI_WIN_RESIZE */
|
---|
| 1873 | );
|
---|
| 1874 | }
|
---|
| 1875 |
|
---|
| 1876 | static inline void print_literal(Byte * buf, Byte * s) // copy s to buf, convert unprintable
|
---|
| 1877 | {
|
---|
| 1878 | Byte c, b[2];
|
---|
| 1879 |
|
---|
| 1880 | b[1] = '\0';
|
---|
| 1881 | strcpy((char *) buf, ""); // init buf
|
---|
| 1882 | if (strlen((char *) s) <= 0)
|
---|
| 1883 | s = (Byte *) "(NULL)";
|
---|
| 1884 | for (; *s > '\0'; s++) {
|
---|
| 1885 | int c_is_no_print;
|
---|
| 1886 |
|
---|
| 1887 | c = *s;
|
---|
| 1888 | c_is_no_print = c > 127 && !Isprint(c);
|
---|
| 1889 | if (c_is_no_print) {
|
---|
| 1890 | strcat((char *) buf, SOn);
|
---|
| 1891 | c = '.';
|
---|
| 1892 | }
|
---|
| 1893 | if (c < ' ' || c == 127) {
|
---|
| 1894 | strcat((char *) buf, "^");
|
---|
| 1895 | if(c == 127)
|
---|
| 1896 | c = '?';
|
---|
| 1897 | else
|
---|
| 1898 | c += '@';
|
---|
| 1899 | }
|
---|
| 1900 | b[0] = c;
|
---|
| 1901 | strcat((char *) buf, (char *) b);
|
---|
| 1902 | if (c_is_no_print)
|
---|
| 1903 | strcat((char *) buf, SOs);
|
---|
| 1904 | if (*s == '\n') {
|
---|
| 1905 | strcat((char *) buf, "$");
|
---|
| 1906 | }
|
---|
| 1907 | }
|
---|
| 1908 | }
|
---|
| 1909 |
|
---|
| 1910 | #ifdef CONFIG_FEATURE_VI_DOT_CMD
|
---|
| 1911 | static void start_new_cmd_q(Byte c)
|
---|
| 1912 | {
|
---|
| 1913 | // release old cmd
|
---|
| 1914 | free(last_modifying_cmd);
|
---|
| 1915 | // get buffer for new cmd
|
---|
| 1916 | last_modifying_cmd = (Byte *) xmalloc(BUFSIZ);
|
---|
| 1917 | memset(last_modifying_cmd, '\0', BUFSIZ); // clear new cmd queue
|
---|
| 1918 | // if there is a current cmd count put it in the buffer first
|
---|
| 1919 | if (cmdcnt > 0)
|
---|
| 1920 | sprintf((char *) last_modifying_cmd, "%d%c", cmdcnt, c);
|
---|
| 1921 | else // just save char c onto queue
|
---|
| 1922 | last_modifying_cmd[0] = c;
|
---|
| 1923 | adding2q = 1;
|
---|
| 1924 | }
|
---|
| 1925 |
|
---|
| 1926 | static void end_cmd_q(void)
|
---|
| 1927 | {
|
---|
| 1928 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 1929 | YDreg = 26; // go back to default Yank/Delete reg
|
---|
| 1930 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 1931 | adding2q = 0;
|
---|
| 1932 | return;
|
---|
| 1933 | }
|
---|
| 1934 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
---|
| 1935 |
|
---|
| 1936 | #if defined(CONFIG_FEATURE_VI_YANKMARK) || (defined(CONFIG_FEATURE_VI_COLON) && defined(CONFIG_FEATURE_VI_SEARCH)) || defined(CONFIG_FEATURE_VI_CRASHME)
|
---|
| 1937 | static Byte *string_insert(Byte * p, Byte * s) // insert the string at 'p'
|
---|
| 1938 | {
|
---|
| 1939 | int cnt, i;
|
---|
| 1940 |
|
---|
| 1941 | i = strlen((char *) s);
|
---|
| 1942 | p = text_hole_make(p, i);
|
---|
| 1943 | strncpy((char *) p, (char *) s, i);
|
---|
| 1944 | for (cnt = 0; *s != '\0'; s++) {
|
---|
| 1945 | if (*s == '\n')
|
---|
| 1946 | cnt++;
|
---|
| 1947 | }
|
---|
| 1948 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 1949 | psb("Put %d lines (%d chars) from [%c]", cnt, i, what_reg());
|
---|
| 1950 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 1951 | return (p);
|
---|
| 1952 | }
|
---|
| 1953 | #endif /* CONFIG_FEATURE_VI_YANKMARK || CONFIG_FEATURE_VI_COLON || CONFIG_FEATURE_VI_CRASHME */
|
---|
| 1954 |
|
---|
| 1955 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 1956 | static Byte *text_yank(Byte * p, Byte * q, int dest) // copy text into a register
|
---|
| 1957 | {
|
---|
| 1958 | Byte *t;
|
---|
| 1959 | int cnt;
|
---|
| 1960 |
|
---|
| 1961 | if (q < p) { // they are backwards- reverse them
|
---|
| 1962 | t = q;
|
---|
| 1963 | q = p;
|
---|
| 1964 | p = t;
|
---|
| 1965 | }
|
---|
| 1966 | cnt = q - p + 1;
|
---|
| 1967 | t = reg[dest];
|
---|
| 1968 | free(t); // if already a yank register, free it
|
---|
| 1969 | t = (Byte *) xmalloc(cnt + 1); // get a new register
|
---|
| 1970 | memset(t, '\0', cnt + 1); // clear new text[]
|
---|
| 1971 | strncpy((char *) t, (char *) p, cnt); // copy text[] into bufer
|
---|
| 1972 | reg[dest] = t;
|
---|
| 1973 | return (p);
|
---|
| 1974 | }
|
---|
| 1975 |
|
---|
| 1976 | static Byte what_reg(void)
|
---|
| 1977 | {
|
---|
| 1978 | Byte c;
|
---|
| 1979 | int i;
|
---|
| 1980 |
|
---|
| 1981 | i = 0;
|
---|
| 1982 | c = 'D'; // default to D-reg
|
---|
| 1983 | if (0 <= YDreg && YDreg <= 25)
|
---|
| 1984 | c = 'a' + (Byte) YDreg;
|
---|
| 1985 | if (YDreg == 26)
|
---|
| 1986 | c = 'D';
|
---|
| 1987 | if (YDreg == 27)
|
---|
| 1988 | c = 'U';
|
---|
| 1989 | return (c);
|
---|
| 1990 | }
|
---|
| 1991 |
|
---|
| 1992 | static void check_context(Byte cmd)
|
---|
| 1993 | {
|
---|
| 1994 | // A context is defined to be "modifying text"
|
---|
| 1995 | // Any modifying command establishes a new context.
|
---|
| 1996 |
|
---|
| 1997 | if (dot < context_start || dot > context_end) {
|
---|
| 1998 | if (strchr((char *) modifying_cmds, cmd) != NULL) {
|
---|
| 1999 | // we are trying to modify text[]- make this the current context
|
---|
| 2000 | mark[27] = mark[26]; // move cur to prev
|
---|
| 2001 | mark[26] = dot; // move local to cur
|
---|
| 2002 | context_start = prev_line(prev_line(dot));
|
---|
| 2003 | context_end = next_line(next_line(dot));
|
---|
| 2004 | //loiter= start_loiter= now;
|
---|
| 2005 | }
|
---|
| 2006 | }
|
---|
| 2007 | return;
|
---|
| 2008 | }
|
---|
| 2009 |
|
---|
| 2010 | static inline Byte *swap_context(Byte * p) // goto new context for '' command make this the current context
|
---|
| 2011 | {
|
---|
| 2012 | Byte *tmp;
|
---|
| 2013 |
|
---|
| 2014 | // the current context is in mark[26]
|
---|
| 2015 | // the previous context is in mark[27]
|
---|
| 2016 | // only swap context if other context is valid
|
---|
| 2017 | if (text <= mark[27] && mark[27] <= end - 1) {
|
---|
| 2018 | tmp = mark[27];
|
---|
| 2019 | mark[27] = mark[26];
|
---|
| 2020 | mark[26] = tmp;
|
---|
| 2021 | p = mark[26]; // where we are going- previous context
|
---|
| 2022 | context_start = prev_line(prev_line(prev_line(p)));
|
---|
| 2023 | context_end = next_line(next_line(next_line(p)));
|
---|
| 2024 | }
|
---|
| 2025 | return (p);
|
---|
| 2026 | }
|
---|
| 2027 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 2028 |
|
---|
| 2029 | static int isblnk(Byte c) // is the char a blank or tab
|
---|
| 2030 | {
|
---|
| 2031 | return (c == ' ' || c == '\t');
|
---|
| 2032 | }
|
---|
| 2033 |
|
---|
| 2034 | //----- Set terminal attributes --------------------------------
|
---|
| 2035 | static void rawmode(void)
|
---|
| 2036 | {
|
---|
| 2037 | tcgetattr(0, &term_orig);
|
---|
| 2038 | term_vi = term_orig;
|
---|
| 2039 | term_vi.c_lflag &= (~ICANON & ~ECHO); // leave ISIG ON- allow intr's
|
---|
| 2040 | term_vi.c_iflag &= (~IXON & ~ICRNL);
|
---|
| 2041 | term_vi.c_oflag &= (~ONLCR);
|
---|
| 2042 | term_vi.c_cc[VMIN] = 1;
|
---|
| 2043 | term_vi.c_cc[VTIME] = 0;
|
---|
| 2044 | erase_char = term_vi.c_cc[VERASE];
|
---|
| 2045 | tcsetattr(0, TCSANOW, &term_vi);
|
---|
| 2046 | }
|
---|
| 2047 |
|
---|
| 2048 | static void cookmode(void)
|
---|
| 2049 | {
|
---|
| 2050 | fflush(stdout);
|
---|
| 2051 | tcsetattr(0, TCSANOW, &term_orig);
|
---|
| 2052 | }
|
---|
| 2053 |
|
---|
| 2054 | //----- Come here when we get a window resize signal ---------
|
---|
| 2055 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS
|
---|
| 2056 | static void winch_sig(int sig ATTRIBUTE_UNUSED)
|
---|
| 2057 | {
|
---|
| 2058 | signal(SIGWINCH, winch_sig);
|
---|
| 2059 | if (ENABLE_FEATURE_VI_WIN_RESIZE)
|
---|
| 2060 | get_terminal_width_height(0, &columns, &rows);
|
---|
| 2061 | new_screen(rows, columns); // get memory for virtual screen
|
---|
| 2062 | redraw(TRUE); // re-draw the screen
|
---|
| 2063 | }
|
---|
| 2064 |
|
---|
| 2065 | //----- Come here when we get a continue signal -------------------
|
---|
| 2066 | static void cont_sig(int sig ATTRIBUTE_UNUSED)
|
---|
| 2067 | {
|
---|
| 2068 | rawmode(); // terminal to "raw"
|
---|
| 2069 | last_status_cksum = 0; // force status update
|
---|
| 2070 | redraw(TRUE); // re-draw the screen
|
---|
| 2071 |
|
---|
| 2072 | signal(SIGTSTP, suspend_sig);
|
---|
| 2073 | signal(SIGCONT, SIG_DFL);
|
---|
| 2074 | kill(my_pid, SIGCONT);
|
---|
| 2075 | }
|
---|
| 2076 |
|
---|
| 2077 | //----- Come here when we get a Suspend signal -------------------
|
---|
| 2078 | static void suspend_sig(int sig ATTRIBUTE_UNUSED)
|
---|
| 2079 | {
|
---|
| 2080 | place_cursor(rows - 1, 0, FALSE); // go to bottom of screen
|
---|
| 2081 | clear_to_eol(); // Erase to end of line
|
---|
| 2082 | cookmode(); // terminal to "cooked"
|
---|
| 2083 |
|
---|
| 2084 | signal(SIGCONT, cont_sig);
|
---|
| 2085 | signal(SIGTSTP, SIG_DFL);
|
---|
| 2086 | kill(my_pid, SIGTSTP);
|
---|
| 2087 | }
|
---|
| 2088 |
|
---|
| 2089 | //----- Come here when we get a signal ---------------------------
|
---|
| 2090 | static void catch_sig(int sig)
|
---|
| 2091 | {
|
---|
| 2092 | signal(SIGINT, catch_sig);
|
---|
| 2093 | if(sig)
|
---|
| 2094 | longjmp(restart, sig);
|
---|
| 2095 | }
|
---|
| 2096 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */
|
---|
| 2097 |
|
---|
| 2098 | static int mysleep(int hund) // sleep for 'h' 1/100 seconds
|
---|
| 2099 | {
|
---|
| 2100 | // Don't hang- Wait 5/100 seconds- 1 Sec= 1000000
|
---|
| 2101 | fflush(stdout);
|
---|
| 2102 | FD_ZERO(&rfds);
|
---|
| 2103 | FD_SET(0, &rfds);
|
---|
| 2104 | tv.tv_sec = 0;
|
---|
| 2105 | tv.tv_usec = hund * 10000;
|
---|
| 2106 | select(1, &rfds, NULL, NULL, &tv);
|
---|
| 2107 | return (FD_ISSET(0, &rfds));
|
---|
| 2108 | }
|
---|
| 2109 |
|
---|
| 2110 | #define readbuffer bb_common_bufsiz1
|
---|
| 2111 |
|
---|
| 2112 | static int readed_for_parse;
|
---|
| 2113 |
|
---|
| 2114 | //----- IO Routines --------------------------------------------
|
---|
| 2115 | static Byte readit(void) // read (maybe cursor) key from stdin
|
---|
| 2116 | {
|
---|
| 2117 | Byte c;
|
---|
| 2118 | int n;
|
---|
| 2119 | struct esc_cmds {
|
---|
| 2120 | const char *seq;
|
---|
| 2121 | Byte val;
|
---|
| 2122 | };
|
---|
| 2123 |
|
---|
| 2124 | static const struct esc_cmds esccmds[] = {
|
---|
| 2125 | {"OA", (Byte) VI_K_UP}, // cursor key Up
|
---|
| 2126 | {"OB", (Byte) VI_K_DOWN}, // cursor key Down
|
---|
| 2127 | {"OC", (Byte) VI_K_RIGHT}, // Cursor Key Right
|
---|
| 2128 | {"OD", (Byte) VI_K_LEFT}, // cursor key Left
|
---|
| 2129 | {"OH", (Byte) VI_K_HOME}, // Cursor Key Home
|
---|
| 2130 | {"OF", (Byte) VI_K_END}, // Cursor Key End
|
---|
| 2131 | {"[A", (Byte) VI_K_UP}, // cursor key Up
|
---|
| 2132 | {"[B", (Byte) VI_K_DOWN}, // cursor key Down
|
---|
| 2133 | {"[C", (Byte) VI_K_RIGHT}, // Cursor Key Right
|
---|
| 2134 | {"[D", (Byte) VI_K_LEFT}, // cursor key Left
|
---|
| 2135 | {"[H", (Byte) VI_K_HOME}, // Cursor Key Home
|
---|
| 2136 | {"[F", (Byte) VI_K_END}, // Cursor Key End
|
---|
| 2137 | {"[1~", (Byte) VI_K_HOME}, // Cursor Key Home
|
---|
| 2138 | {"[2~", (Byte) VI_K_INSERT}, // Cursor Key Insert
|
---|
| 2139 | {"[4~", (Byte) VI_K_END}, // Cursor Key End
|
---|
| 2140 | {"[5~", (Byte) VI_K_PAGEUP}, // Cursor Key Page Up
|
---|
| 2141 | {"[6~", (Byte) VI_K_PAGEDOWN}, // Cursor Key Page Down
|
---|
| 2142 | {"OP", (Byte) VI_K_FUN1}, // Function Key F1
|
---|
| 2143 | {"OQ", (Byte) VI_K_FUN2}, // Function Key F2
|
---|
| 2144 | {"OR", (Byte) VI_K_FUN3}, // Function Key F3
|
---|
| 2145 | {"OS", (Byte) VI_K_FUN4}, // Function Key F4
|
---|
| 2146 | {"[15~", (Byte) VI_K_FUN5}, // Function Key F5
|
---|
| 2147 | {"[17~", (Byte) VI_K_FUN6}, // Function Key F6
|
---|
| 2148 | {"[18~", (Byte) VI_K_FUN7}, // Function Key F7
|
---|
| 2149 | {"[19~", (Byte) VI_K_FUN8}, // Function Key F8
|
---|
| 2150 | {"[20~", (Byte) VI_K_FUN9}, // Function Key F9
|
---|
| 2151 | {"[21~", (Byte) VI_K_FUN10}, // Function Key F10
|
---|
| 2152 | {"[23~", (Byte) VI_K_FUN11}, // Function Key F11
|
---|
| 2153 | {"[24~", (Byte) VI_K_FUN12}, // Function Key F12
|
---|
| 2154 | {"[11~", (Byte) VI_K_FUN1}, // Function Key F1
|
---|
| 2155 | {"[12~", (Byte) VI_K_FUN2}, // Function Key F2
|
---|
| 2156 | {"[13~", (Byte) VI_K_FUN3}, // Function Key F3
|
---|
| 2157 | {"[14~", (Byte) VI_K_FUN4}, // Function Key F4
|
---|
| 2158 | };
|
---|
| 2159 |
|
---|
| 2160 | #define ESCCMDS_COUNT (sizeof(esccmds)/sizeof(struct esc_cmds))
|
---|
| 2161 |
|
---|
| 2162 | (void) alarm(0); // turn alarm OFF while we wait for input
|
---|
| 2163 | fflush(stdout);
|
---|
| 2164 | n = readed_for_parse;
|
---|
| 2165 | // get input from User- are there already input chars in Q?
|
---|
| 2166 | if (n <= 0) {
|
---|
| 2167 | ri0:
|
---|
| 2168 | // the Q is empty, wait for a typed char
|
---|
| 2169 | n = read(0, readbuffer, BUFSIZ - 1);
|
---|
| 2170 | if (n < 0) {
|
---|
| 2171 | if (errno == EINTR)
|
---|
| 2172 | goto ri0; // interrupted sys call
|
---|
| 2173 | if (errno == EBADF)
|
---|
| 2174 | editing = 0;
|
---|
| 2175 | if (errno == EFAULT)
|
---|
| 2176 | editing = 0;
|
---|
| 2177 | if (errno == EINVAL)
|
---|
| 2178 | editing = 0;
|
---|
| 2179 | if (errno == EIO)
|
---|
| 2180 | editing = 0;
|
---|
| 2181 | errno = 0;
|
---|
| 2182 | }
|
---|
| 2183 | if(n <= 0)
|
---|
| 2184 | return 0; // error
|
---|
| 2185 | if (readbuffer[0] == 27) {
|
---|
| 2186 | // This is an ESC char. Is this Esc sequence?
|
---|
| 2187 | // Could be bare Esc key. See if there are any
|
---|
| 2188 | // more chars to read after the ESC. This would
|
---|
| 2189 | // be a Function or Cursor Key sequence.
|
---|
| 2190 | FD_ZERO(&rfds);
|
---|
| 2191 | FD_SET(0, &rfds);
|
---|
| 2192 | tv.tv_sec = 0;
|
---|
| 2193 | tv.tv_usec = 50000; // Wait 5/100 seconds- 1 Sec=1000000
|
---|
| 2194 |
|
---|
| 2195 | // keep reading while there are input chars and room in buffer
|
---|
| 2196 | while (select(1, &rfds, NULL, NULL, &tv) > 0 && n <= (BUFSIZ - 5)) {
|
---|
| 2197 | // read the rest of the ESC string
|
---|
| 2198 | int r = read(0, (void *) (readbuffer + n), BUFSIZ - n);
|
---|
| 2199 | if (r > 0) {
|
---|
| 2200 | n += r;
|
---|
| 2201 | }
|
---|
| 2202 | }
|
---|
| 2203 | }
|
---|
| 2204 | readed_for_parse = n;
|
---|
| 2205 | }
|
---|
| 2206 | c = readbuffer[0];
|
---|
| 2207 | if(c == 27 && n > 1) {
|
---|
| 2208 | // Maybe cursor or function key?
|
---|
| 2209 | const struct esc_cmds *eindex;
|
---|
| 2210 |
|
---|
| 2211 | for (eindex = esccmds; eindex < &esccmds[ESCCMDS_COUNT]; eindex++) {
|
---|
| 2212 | int cnt = strlen(eindex->seq);
|
---|
| 2213 |
|
---|
| 2214 | if(n <= cnt)
|
---|
| 2215 | continue;
|
---|
| 2216 | if(strncmp(eindex->seq, (char *) readbuffer + 1, cnt))
|
---|
| 2217 | continue;
|
---|
| 2218 | // is a Cursor key- put derived value back into Q
|
---|
| 2219 | c = eindex->val;
|
---|
| 2220 | // for squeeze out the ESC sequence
|
---|
| 2221 | n = cnt + 1;
|
---|
| 2222 | break;
|
---|
| 2223 | }
|
---|
| 2224 | if(eindex == &esccmds[ESCCMDS_COUNT]) {
|
---|
| 2225 | /* defined ESC sequence not found, set only one ESC */
|
---|
| 2226 | n = 1;
|
---|
| 2227 | }
|
---|
| 2228 | } else {
|
---|
| 2229 | n = 1;
|
---|
| 2230 | }
|
---|
| 2231 | // remove key sequence from Q
|
---|
| 2232 | readed_for_parse -= n;
|
---|
| 2233 | memmove(readbuffer, readbuffer + n, BUFSIZ - n);
|
---|
| 2234 | (void) alarm(3); // we are done waiting for input, turn alarm ON
|
---|
| 2235 | return (c);
|
---|
| 2236 | }
|
---|
| 2237 |
|
---|
| 2238 | //----- IO Routines --------------------------------------------
|
---|
| 2239 | static Byte get_one_char(void)
|
---|
| 2240 | {
|
---|
| 2241 | static Byte c;
|
---|
| 2242 |
|
---|
| 2243 | #ifdef CONFIG_FEATURE_VI_DOT_CMD
|
---|
| 2244 | // ! adding2q && ioq == 0 read()
|
---|
| 2245 | // ! adding2q && ioq != 0 *ioq
|
---|
| 2246 | // adding2q *last_modifying_cmd= read()
|
---|
| 2247 | if (!adding2q) {
|
---|
| 2248 | // we are not adding to the q.
|
---|
| 2249 | // but, we may be reading from a q
|
---|
| 2250 | if (ioq == 0) {
|
---|
| 2251 | // there is no current q, read from STDIN
|
---|
| 2252 | c = readit(); // get the users input
|
---|
| 2253 | } else {
|
---|
| 2254 | // there is a queue to get chars from first
|
---|
| 2255 | c = *ioq++;
|
---|
| 2256 | if (c == '\0') {
|
---|
| 2257 | // the end of the q, read from STDIN
|
---|
| 2258 | free(ioq_start);
|
---|
| 2259 | ioq_start = ioq = 0;
|
---|
| 2260 | c = readit(); // get the users input
|
---|
| 2261 | }
|
---|
| 2262 | }
|
---|
| 2263 | } else {
|
---|
| 2264 | // adding STDIN chars to q
|
---|
| 2265 | c = readit(); // get the users input
|
---|
| 2266 | if (last_modifying_cmd != 0) {
|
---|
| 2267 | int len = strlen((char *) last_modifying_cmd);
|
---|
| 2268 | if (len + 1 >= BUFSIZ) {
|
---|
| 2269 | psbs("last_modifying_cmd overrun");
|
---|
| 2270 | } else {
|
---|
| 2271 | // add new char to q
|
---|
| 2272 | last_modifying_cmd[len] = c;
|
---|
| 2273 | }
|
---|
| 2274 | }
|
---|
| 2275 | }
|
---|
| 2276 | #else /* CONFIG_FEATURE_VI_DOT_CMD */
|
---|
| 2277 | c = readit(); // get the users input
|
---|
| 2278 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
---|
| 2279 | return (c); // return the char, where ever it came from
|
---|
| 2280 | }
|
---|
| 2281 |
|
---|
| 2282 | static Byte *get_input_line(Byte * prompt) // get input line- use "status line"
|
---|
| 2283 | {
|
---|
| 2284 | Byte buf[BUFSIZ];
|
---|
| 2285 | Byte c;
|
---|
| 2286 | int i;
|
---|
| 2287 | static Byte *obufp = NULL;
|
---|
| 2288 |
|
---|
| 2289 | strcpy((char *) buf, (char *) prompt);
|
---|
| 2290 | last_status_cksum = 0; // force status update
|
---|
| 2291 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen
|
---|
| 2292 | clear_to_eol(); // clear the line
|
---|
| 2293 | write1((char *) prompt); // write out the :, /, or ? prompt
|
---|
| 2294 |
|
---|
| 2295 | for (i = strlen((char *) buf); i < BUFSIZ;) {
|
---|
| 2296 | c = get_one_char(); // read user input
|
---|
| 2297 | if (c == '\n' || c == '\r' || c == 27)
|
---|
| 2298 | break; // is this end of input
|
---|
| 2299 | if (c == erase_char || c == 8 || c == 127) {
|
---|
| 2300 | // user wants to erase prev char
|
---|
| 2301 | i--; // backup to prev char
|
---|
| 2302 | buf[i] = '\0'; // erase the char
|
---|
| 2303 | buf[i + 1] = '\0'; // null terminate buffer
|
---|
| 2304 | write1("\b \b"); // erase char on screen
|
---|
| 2305 | if (i <= 0) { // user backs up before b-o-l, exit
|
---|
| 2306 | break;
|
---|
| 2307 | }
|
---|
| 2308 | } else {
|
---|
| 2309 | buf[i] = c; // save char in buffer
|
---|
| 2310 | buf[i + 1] = '\0'; // make sure buffer is null terminated
|
---|
| 2311 | putchar(c); // echo the char back to user
|
---|
| 2312 | i++;
|
---|
| 2313 | }
|
---|
| 2314 | }
|
---|
| 2315 | refresh(FALSE);
|
---|
| 2316 | free(obufp);
|
---|
| 2317 | obufp = (Byte *) bb_xstrdup((char *) buf);
|
---|
| 2318 | return (obufp);
|
---|
| 2319 | }
|
---|
| 2320 |
|
---|
| 2321 | static int file_size(const Byte * fn) // what is the byte size of "fn"
|
---|
| 2322 | {
|
---|
| 2323 | struct stat st_buf;
|
---|
| 2324 | int cnt, sr;
|
---|
| 2325 |
|
---|
| 2326 | if (fn == 0 || strlen((char *)fn) <= 0)
|
---|
| 2327 | return (-1);
|
---|
| 2328 | cnt = -1;
|
---|
| 2329 | sr = stat((char *) fn, &st_buf); // see if file exists
|
---|
| 2330 | if (sr >= 0) {
|
---|
| 2331 | cnt = (int) st_buf.st_size;
|
---|
| 2332 | }
|
---|
| 2333 | return (cnt);
|
---|
| 2334 | }
|
---|
| 2335 |
|
---|
| 2336 | static int file_insert(Byte * fn, Byte * p, int size)
|
---|
| 2337 | {
|
---|
| 2338 | int fd, cnt;
|
---|
| 2339 |
|
---|
| 2340 | cnt = -1;
|
---|
| 2341 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 2342 | readonly = FALSE;
|
---|
| 2343 | #endif /* CONFIG_FEATURE_VI_READONLY */
|
---|
| 2344 | if (fn == 0 || strlen((char*) fn) <= 0) {
|
---|
| 2345 | psbs("No filename given");
|
---|
| 2346 | goto fi0;
|
---|
| 2347 | }
|
---|
| 2348 | if (size == 0) {
|
---|
| 2349 | // OK- this is just a no-op
|
---|
| 2350 | cnt = 0;
|
---|
| 2351 | goto fi0;
|
---|
| 2352 | }
|
---|
| 2353 | if (size < 0) {
|
---|
| 2354 | psbs("Trying to insert a negative number (%d) of characters", size);
|
---|
| 2355 | goto fi0;
|
---|
| 2356 | }
|
---|
| 2357 | if (p < text || p > end) {
|
---|
| 2358 | psbs("Trying to insert file outside of memory");
|
---|
| 2359 | goto fi0;
|
---|
| 2360 | }
|
---|
| 2361 |
|
---|
| 2362 | // see if we can open the file
|
---|
| 2363 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 2364 | if (vi_readonly) goto fi1; // do not try write-mode
|
---|
| 2365 | #endif
|
---|
| 2366 | fd = open((char *) fn, O_RDWR); // assume read & write
|
---|
| 2367 | if (fd < 0) {
|
---|
| 2368 | // could not open for writing- maybe file is read only
|
---|
| 2369 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 2370 | fi1:
|
---|
| 2371 | #endif
|
---|
| 2372 | fd = open((char *) fn, O_RDONLY); // try read-only
|
---|
| 2373 | if (fd < 0) {
|
---|
| 2374 | psbs("\"%s\" %s", fn, "could not open file");
|
---|
| 2375 | goto fi0;
|
---|
| 2376 | }
|
---|
| 2377 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 2378 | // got the file- read-only
|
---|
| 2379 | readonly = TRUE;
|
---|
| 2380 | #endif /* CONFIG_FEATURE_VI_READONLY */
|
---|
| 2381 | }
|
---|
| 2382 | p = text_hole_make(p, size);
|
---|
| 2383 | cnt = read(fd, p, size);
|
---|
| 2384 | close(fd);
|
---|
| 2385 | if (cnt < 0) {
|
---|
| 2386 | cnt = -1;
|
---|
| 2387 | p = text_hole_delete(p, p + size - 1); // un-do buffer insert
|
---|
| 2388 | psbs("could not read file \"%s\"", fn);
|
---|
| 2389 | } else if (cnt < size) {
|
---|
| 2390 | // There was a partial read, shrink unused space text[]
|
---|
| 2391 | p = text_hole_delete(p + cnt, p + (size - cnt) - 1); // un-do buffer insert
|
---|
| 2392 | psbs("could not read all of file \"%s\"", fn);
|
---|
| 2393 | }
|
---|
| 2394 | if (cnt >= size)
|
---|
| 2395 | file_modified++;
|
---|
| 2396 | fi0:
|
---|
| 2397 | return (cnt);
|
---|
| 2398 | }
|
---|
| 2399 |
|
---|
| 2400 | static int file_write(Byte * fn, Byte * first, Byte * last)
|
---|
| 2401 | {
|
---|
| 2402 | int fd, cnt, charcnt;
|
---|
| 2403 |
|
---|
| 2404 | if (fn == 0) {
|
---|
| 2405 | psbs("No current filename");
|
---|
| 2406 | return (-2);
|
---|
| 2407 | }
|
---|
| 2408 | charcnt = 0;
|
---|
| 2409 | // FIXIT- use the correct umask()
|
---|
| 2410 | fd = open((char *) fn, (O_WRONLY | O_CREAT | O_TRUNC), 0664);
|
---|
| 2411 | if (fd < 0)
|
---|
| 2412 | return (-1);
|
---|
| 2413 | cnt = last - first + 1;
|
---|
| 2414 | charcnt = write(fd, first, cnt);
|
---|
| 2415 | if (charcnt == cnt) {
|
---|
| 2416 | // good write
|
---|
| 2417 | //file_modified= FALSE; // the file has not been modified
|
---|
| 2418 | } else {
|
---|
| 2419 | charcnt = 0;
|
---|
| 2420 | }
|
---|
| 2421 | close(fd);
|
---|
| 2422 | return (charcnt);
|
---|
| 2423 | }
|
---|
| 2424 |
|
---|
| 2425 | //----- Terminal Drawing ---------------------------------------
|
---|
| 2426 | // The terminal is made up of 'rows' line of 'columns' columns.
|
---|
| 2427 | // classically this would be 24 x 80.
|
---|
| 2428 | // screen coordinates
|
---|
| 2429 | // 0,0 ... 0,79
|
---|
| 2430 | // 1,0 ... 1,79
|
---|
| 2431 | // . ... .
|
---|
| 2432 | // . ... .
|
---|
| 2433 | // 22,0 ... 22,79
|
---|
| 2434 | // 23,0 ... 23,79 status line
|
---|
| 2435 | //
|
---|
| 2436 |
|
---|
| 2437 | //----- Move the cursor to row x col (count from 0, not 1) -------
|
---|
| 2438 | static void place_cursor(int row, int col, int opti)
|
---|
| 2439 | {
|
---|
| 2440 | char cm1[BUFSIZ];
|
---|
| 2441 | char *cm;
|
---|
| 2442 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
| 2443 | char cm2[BUFSIZ];
|
---|
| 2444 | Byte *screenp;
|
---|
| 2445 | // char cm3[BUFSIZ];
|
---|
| 2446 | int Rrow= last_row;
|
---|
| 2447 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
|
---|
| 2448 |
|
---|
| 2449 | memset(cm1, '\0', BUFSIZ - 1); // clear the buffer
|
---|
| 2450 |
|
---|
| 2451 | if (row < 0) row = 0;
|
---|
| 2452 | if (row >= rows) row = rows - 1;
|
---|
| 2453 | if (col < 0) col = 0;
|
---|
| 2454 | if (col >= columns) col = columns - 1;
|
---|
| 2455 |
|
---|
| 2456 | //----- 1. Try the standard terminal ESC sequence
|
---|
| 2457 | sprintf((char *) cm1, CMrc, row + 1, col + 1);
|
---|
| 2458 | cm= cm1;
|
---|
| 2459 | if (! opti) goto pc0;
|
---|
| 2460 |
|
---|
| 2461 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
| 2462 | //----- find the minimum # of chars to move cursor -------------
|
---|
| 2463 | //----- 2. Try moving with discreet chars (Newline, [back]space, ...)
|
---|
| 2464 | memset(cm2, '\0', BUFSIZ - 1); // clear the buffer
|
---|
| 2465 |
|
---|
| 2466 | // move to the correct row
|
---|
| 2467 | while (row < Rrow) {
|
---|
| 2468 | // the cursor has to move up
|
---|
| 2469 | strcat(cm2, CMup);
|
---|
| 2470 | Rrow--;
|
---|
| 2471 | }
|
---|
| 2472 | while (row > Rrow) {
|
---|
| 2473 | // the cursor has to move down
|
---|
| 2474 | strcat(cm2, CMdown);
|
---|
| 2475 | Rrow++;
|
---|
| 2476 | }
|
---|
| 2477 |
|
---|
| 2478 | // now move to the correct column
|
---|
| 2479 | strcat(cm2, "\r"); // start at col 0
|
---|
| 2480 | // just send out orignal source char to get to correct place
|
---|
| 2481 | screenp = &screen[row * columns]; // start of screen line
|
---|
| 2482 | strncat(cm2, (char* )screenp, col);
|
---|
| 2483 |
|
---|
| 2484 | //----- 3. Try some other way of moving cursor
|
---|
| 2485 | //---------------------------------------------
|
---|
| 2486 |
|
---|
| 2487 | // pick the shortest cursor motion to send out
|
---|
| 2488 | cm= cm1;
|
---|
| 2489 | if (strlen(cm2) < strlen(cm)) {
|
---|
| 2490 | cm= cm2;
|
---|
| 2491 | } /* else if (strlen(cm3) < strlen(cm)) {
|
---|
| 2492 | cm= cm3;
|
---|
| 2493 | } */
|
---|
| 2494 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
|
---|
| 2495 | pc0:
|
---|
| 2496 | write1(cm); // move the cursor
|
---|
| 2497 | }
|
---|
| 2498 |
|
---|
| 2499 | //----- Erase from cursor to end of line -----------------------
|
---|
| 2500 | static void clear_to_eol(void)
|
---|
| 2501 | {
|
---|
| 2502 | write1(Ceol); // Erase from cursor to end of line
|
---|
| 2503 | }
|
---|
| 2504 |
|
---|
| 2505 | //----- Erase from cursor to end of screen -----------------------
|
---|
| 2506 | static void clear_to_eos(void)
|
---|
| 2507 | {
|
---|
| 2508 | write1(Ceos); // Erase from cursor to end of screen
|
---|
| 2509 | }
|
---|
| 2510 |
|
---|
| 2511 | //----- Start standout mode ------------------------------------
|
---|
| 2512 | static void standout_start(void) // send "start reverse video" sequence
|
---|
| 2513 | {
|
---|
| 2514 | write1(SOs); // Start reverse video mode
|
---|
| 2515 | }
|
---|
| 2516 |
|
---|
| 2517 | //----- End standout mode --------------------------------------
|
---|
| 2518 | static void standout_end(void) // send "end reverse video" sequence
|
---|
| 2519 | {
|
---|
| 2520 | write1(SOn); // End reverse video mode
|
---|
| 2521 | }
|
---|
| 2522 |
|
---|
| 2523 | //----- Flash the screen --------------------------------------
|
---|
| 2524 | static void flash(int h)
|
---|
| 2525 | {
|
---|
| 2526 | standout_start(); // send "start reverse video" sequence
|
---|
| 2527 | redraw(TRUE);
|
---|
| 2528 | (void) mysleep(h);
|
---|
| 2529 | standout_end(); // send "end reverse video" sequence
|
---|
| 2530 | redraw(TRUE);
|
---|
| 2531 | }
|
---|
| 2532 |
|
---|
| 2533 | static void Indicate_Error(void)
|
---|
| 2534 | {
|
---|
| 2535 | #ifdef CONFIG_FEATURE_VI_CRASHME
|
---|
| 2536 | if (crashme > 0)
|
---|
| 2537 | return; // generate a random command
|
---|
| 2538 | #endif /* CONFIG_FEATURE_VI_CRASHME */
|
---|
| 2539 | if (!err_method) {
|
---|
| 2540 | write1(bell); // send out a bell character
|
---|
| 2541 | } else {
|
---|
| 2542 | flash(10);
|
---|
| 2543 | }
|
---|
| 2544 | }
|
---|
| 2545 |
|
---|
| 2546 | //----- Screen[] Routines --------------------------------------
|
---|
| 2547 | //----- Erase the Screen[] memory ------------------------------
|
---|
| 2548 | static void screen_erase(void)
|
---|
| 2549 | {
|
---|
| 2550 | memset(screen, ' ', screensize); // clear new screen
|
---|
| 2551 | }
|
---|
| 2552 |
|
---|
| 2553 | static int bufsum(unsigned char *buf, int count)
|
---|
| 2554 | {
|
---|
| 2555 | int sum = 0;
|
---|
| 2556 | unsigned char *e = buf + count;
|
---|
| 2557 | while (buf < e)
|
---|
| 2558 | sum += *buf++;
|
---|
| 2559 | return sum;
|
---|
| 2560 | }
|
---|
| 2561 |
|
---|
| 2562 | //----- Draw the status line at bottom of the screen -------------
|
---|
| 2563 | static void show_status_line(void)
|
---|
| 2564 | {
|
---|
| 2565 | int cnt = 0, cksum = 0;
|
---|
| 2566 |
|
---|
| 2567 | // either we already have an error or status message, or we
|
---|
| 2568 | // create one.
|
---|
| 2569 | if (!have_status_msg) {
|
---|
| 2570 | cnt = format_edit_status();
|
---|
| 2571 | cksum = bufsum(status_buffer, cnt);
|
---|
| 2572 | }
|
---|
| 2573 | if (have_status_msg || ((cnt > 0 && last_status_cksum != cksum))) {
|
---|
| 2574 | last_status_cksum= cksum; // remember if we have seen this line
|
---|
| 2575 | place_cursor(rows - 1, 0, FALSE); // put cursor on status line
|
---|
| 2576 | write1((char*)status_buffer);
|
---|
| 2577 | clear_to_eol();
|
---|
| 2578 | if (have_status_msg) {
|
---|
| 2579 | if (((int)strlen((char*)status_buffer) - (have_status_msg - 1)) >
|
---|
| 2580 | (columns - 1) ) {
|
---|
| 2581 | have_status_msg = 0;
|
---|
| 2582 | Hit_Return();
|
---|
| 2583 | }
|
---|
| 2584 | have_status_msg = 0;
|
---|
| 2585 | }
|
---|
| 2586 | place_cursor(crow, ccol, FALSE); // put cursor back in correct place
|
---|
| 2587 | }
|
---|
| 2588 | fflush(stdout);
|
---|
| 2589 | }
|
---|
| 2590 |
|
---|
| 2591 | //----- format the status buffer, the bottom line of screen ------
|
---|
| 2592 | // format status buffer, with STANDOUT mode
|
---|
| 2593 | static void psbs(const char *format, ...)
|
---|
| 2594 | {
|
---|
| 2595 | va_list args;
|
---|
| 2596 |
|
---|
| 2597 | va_start(args, format);
|
---|
| 2598 | strcpy((char *) status_buffer, SOs); // Terminal standout mode on
|
---|
| 2599 | vsprintf((char *) status_buffer + strlen((char *) status_buffer), format, args);
|
---|
| 2600 | strcat((char *) status_buffer, SOn); // Terminal standout mode off
|
---|
| 2601 | va_end(args);
|
---|
| 2602 |
|
---|
| 2603 | have_status_msg = 1 + sizeof(SOs) + sizeof(SOn) - 2;
|
---|
| 2604 |
|
---|
| 2605 | return;
|
---|
| 2606 | }
|
---|
| 2607 |
|
---|
| 2608 | // format status buffer
|
---|
| 2609 | static void psb(const char *format, ...)
|
---|
| 2610 | {
|
---|
| 2611 | va_list args;
|
---|
| 2612 |
|
---|
| 2613 | va_start(args, format);
|
---|
| 2614 | vsprintf((char *) status_buffer, format, args);
|
---|
| 2615 | va_end(args);
|
---|
| 2616 |
|
---|
| 2617 | have_status_msg = 1;
|
---|
| 2618 |
|
---|
| 2619 | return;
|
---|
| 2620 | }
|
---|
| 2621 |
|
---|
| 2622 | static void ni(Byte * s) // display messages
|
---|
| 2623 | {
|
---|
| 2624 | Byte buf[BUFSIZ];
|
---|
| 2625 |
|
---|
| 2626 | print_literal(buf, s);
|
---|
| 2627 | psbs("\'%s\' is not implemented", buf);
|
---|
| 2628 | }
|
---|
| 2629 |
|
---|
| 2630 | static int format_edit_status(void) // show file status on status line
|
---|
| 2631 | {
|
---|
| 2632 | int cur, percent, ret, trunc_at;
|
---|
| 2633 | static int tot;
|
---|
| 2634 |
|
---|
| 2635 | // file_modified is now a counter rather than a flag. this
|
---|
| 2636 | // helps reduce the amount of line counting we need to do.
|
---|
| 2637 | // (this will cause a mis-reporting of modified status
|
---|
| 2638 | // once every MAXINT editing operations.)
|
---|
| 2639 |
|
---|
| 2640 | // it would be nice to do a similar optimization here -- if
|
---|
| 2641 | // we haven't done a motion that could have changed which line
|
---|
| 2642 | // we're on, then we shouldn't have to do this count_lines()
|
---|
| 2643 | cur = count_lines(text, dot);
|
---|
| 2644 |
|
---|
| 2645 | // reduce counting -- the total lines can't have
|
---|
| 2646 | // changed if we haven't done any edits.
|
---|
| 2647 | if (file_modified != last_file_modified) {
|
---|
| 2648 | tot = cur + count_lines(dot, end - 1) - 1;
|
---|
| 2649 | last_file_modified = file_modified;
|
---|
| 2650 | }
|
---|
| 2651 |
|
---|
| 2652 | // current line percent
|
---|
| 2653 | // ------------- ~~ ----------
|
---|
| 2654 | // total lines 100
|
---|
| 2655 | if (tot > 0) {
|
---|
| 2656 | percent = (100 * cur) / tot;
|
---|
| 2657 | } else {
|
---|
| 2658 | cur = tot = 0;
|
---|
| 2659 | percent = 100;
|
---|
| 2660 | }
|
---|
| 2661 |
|
---|
| 2662 | trunc_at = columns < STATUS_BUFFER_LEN-1 ?
|
---|
| 2663 | columns : STATUS_BUFFER_LEN-1;
|
---|
| 2664 |
|
---|
| 2665 | ret = snprintf((char *) status_buffer, trunc_at+1,
|
---|
| 2666 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 2667 | "%c %s%s%s %d/%d %d%%",
|
---|
| 2668 | #else
|
---|
| 2669 | "%c %s%s %d/%d %d%%",
|
---|
| 2670 | #endif
|
---|
| 2671 | (cmd_mode ? (cmd_mode == 2 ? 'R':'I'):'-'),
|
---|
| 2672 | (cfn != 0 ? (char *) cfn : "No file"),
|
---|
| 2673 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 2674 | ((vi_readonly || readonly) ? " [Read-only]" : ""),
|
---|
| 2675 | #endif
|
---|
| 2676 | (file_modified ? " [modified]" : ""),
|
---|
| 2677 | cur, tot, percent);
|
---|
| 2678 |
|
---|
| 2679 | if (ret >= 0 && ret < trunc_at)
|
---|
| 2680 | return ret; /* it all fit */
|
---|
| 2681 |
|
---|
| 2682 | return trunc_at; /* had to truncate */
|
---|
| 2683 | }
|
---|
| 2684 |
|
---|
| 2685 | //----- Force refresh of all Lines -----------------------------
|
---|
| 2686 | static void redraw(int full_screen)
|
---|
| 2687 | {
|
---|
| 2688 | place_cursor(0, 0, FALSE); // put cursor in correct place
|
---|
| 2689 | clear_to_eos(); // tel terminal to erase display
|
---|
| 2690 | screen_erase(); // erase the internal screen buffer
|
---|
| 2691 | last_status_cksum = 0; // force status update
|
---|
| 2692 | refresh(full_screen); // this will redraw the entire display
|
---|
| 2693 | show_status_line();
|
---|
| 2694 | }
|
---|
| 2695 |
|
---|
| 2696 | //----- Format a text[] line into a buffer ---------------------
|
---|
| 2697 | static void format_line(Byte *dest, Byte *src, int li)
|
---|
| 2698 | {
|
---|
| 2699 | int co;
|
---|
| 2700 | Byte c;
|
---|
| 2701 |
|
---|
| 2702 | for (co= 0; co < MAX_SCR_COLS; co++) {
|
---|
| 2703 | c= ' '; // assume blank
|
---|
| 2704 | if (li > 0 && co == 0) {
|
---|
| 2705 | c = '~'; // not first line, assume Tilde
|
---|
| 2706 | }
|
---|
| 2707 | // are there chars in text[] and have we gone past the end
|
---|
| 2708 | if (text < end && src < end) {
|
---|
| 2709 | c = *src++;
|
---|
| 2710 | }
|
---|
| 2711 | if (c == '\n')
|
---|
| 2712 | break;
|
---|
| 2713 | if (c > 127 && !Isprint(c)) {
|
---|
| 2714 | c = '.';
|
---|
| 2715 | }
|
---|
| 2716 | if (c < ' ' || c == 127) {
|
---|
| 2717 | if (c == '\t') {
|
---|
| 2718 | c = ' ';
|
---|
| 2719 | // co % 8 != 7
|
---|
| 2720 | for (; (co % tabstop) != (tabstop - 1); co++) {
|
---|
| 2721 | dest[co] = c;
|
---|
| 2722 | }
|
---|
| 2723 | } else {
|
---|
| 2724 | dest[co++] = '^';
|
---|
| 2725 | if(c == 127)
|
---|
| 2726 | c = '?';
|
---|
| 2727 | else
|
---|
| 2728 | c += '@'; // make it visible
|
---|
| 2729 | }
|
---|
| 2730 | }
|
---|
| 2731 | // the co++ is done here so that the column will
|
---|
| 2732 | // not be overwritten when we blank-out the rest of line
|
---|
| 2733 | dest[co] = c;
|
---|
| 2734 | if (src >= end)
|
---|
| 2735 | break;
|
---|
| 2736 | }
|
---|
| 2737 | }
|
---|
| 2738 |
|
---|
| 2739 | //----- Refresh the changed screen lines -----------------------
|
---|
| 2740 | // Copy the source line from text[] into the buffer and note
|
---|
| 2741 | // if the current screenline is different from the new buffer.
|
---|
| 2742 | // If they differ then that line needs redrawing on the terminal.
|
---|
| 2743 | //
|
---|
| 2744 | static void refresh(int full_screen)
|
---|
| 2745 | {
|
---|
| 2746 | static int old_offset;
|
---|
| 2747 | int li, changed;
|
---|
| 2748 | Byte buf[MAX_SCR_COLS];
|
---|
| 2749 | Byte *tp, *sp; // pointer into text[] and screen[]
|
---|
| 2750 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
| 2751 | int last_li= -2; // last line that changed- for optimizing cursor movement
|
---|
| 2752 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
|
---|
| 2753 |
|
---|
| 2754 | if (ENABLE_FEATURE_VI_WIN_RESIZE)
|
---|
| 2755 | get_terminal_width_height(0, &columns, &rows);
|
---|
| 2756 | sync_cursor(dot, &crow, &ccol); // where cursor will be (on "dot")
|
---|
| 2757 | tp = screenbegin; // index into text[] of top line
|
---|
| 2758 |
|
---|
| 2759 | // compare text[] to screen[] and mark screen[] lines that need updating
|
---|
| 2760 | for (li = 0; li < rows - 1; li++) {
|
---|
| 2761 | int cs, ce; // column start & end
|
---|
| 2762 | memset(buf, ' ', MAX_SCR_COLS); // blank-out the buffer
|
---|
| 2763 | buf[MAX_SCR_COLS-1] = 0; // NULL terminate the buffer
|
---|
| 2764 | // format current text line into buf
|
---|
| 2765 | format_line(buf, tp, li);
|
---|
| 2766 |
|
---|
| 2767 | // skip to the end of the current text[] line
|
---|
| 2768 | while (tp < end && *tp++ != '\n') /*no-op*/ ;
|
---|
| 2769 |
|
---|
| 2770 | // see if there are any changes between vitual screen and buf
|
---|
| 2771 | changed = FALSE; // assume no change
|
---|
| 2772 | cs= 0;
|
---|
| 2773 | ce= columns-1;
|
---|
| 2774 | sp = &screen[li * columns]; // start of screen line
|
---|
| 2775 | if (full_screen) {
|
---|
| 2776 | // force re-draw of every single column from 0 - columns-1
|
---|
| 2777 | goto re0;
|
---|
| 2778 | }
|
---|
| 2779 | // compare newly formatted buffer with virtual screen
|
---|
| 2780 | // look forward for first difference between buf and screen
|
---|
| 2781 | for ( ; cs <= ce; cs++) {
|
---|
| 2782 | if (buf[cs + offset] != sp[cs]) {
|
---|
| 2783 | changed = TRUE; // mark for redraw
|
---|
| 2784 | break;
|
---|
| 2785 | }
|
---|
| 2786 | }
|
---|
| 2787 |
|
---|
| 2788 | // look backward for last difference between buf and screen
|
---|
| 2789 | for ( ; ce >= cs; ce--) {
|
---|
| 2790 | if (buf[ce + offset] != sp[ce]) {
|
---|
| 2791 | changed = TRUE; // mark for redraw
|
---|
| 2792 | break;
|
---|
| 2793 | }
|
---|
| 2794 | }
|
---|
| 2795 | // now, cs is index of first diff, and ce is index of last diff
|
---|
| 2796 |
|
---|
| 2797 | // if horz offset has changed, force a redraw
|
---|
| 2798 | if (offset != old_offset) {
|
---|
| 2799 | re0:
|
---|
| 2800 | changed = TRUE;
|
---|
| 2801 | }
|
---|
| 2802 |
|
---|
| 2803 | // make a sanity check of columns indexes
|
---|
| 2804 | if (cs < 0) cs= 0;
|
---|
| 2805 | if (ce > columns-1) ce= columns-1;
|
---|
| 2806 | if (cs > ce) { cs= 0; ce= columns-1; }
|
---|
| 2807 | // is there a change between vitual screen and buf
|
---|
| 2808 | if (changed) {
|
---|
| 2809 | // copy changed part of buffer to virtual screen
|
---|
| 2810 | memmove(sp+cs, buf+(cs+offset), ce-cs+1);
|
---|
| 2811 |
|
---|
| 2812 | // move cursor to column of first change
|
---|
| 2813 | if (offset != old_offset) {
|
---|
| 2814 | // opti_cur_move is still too stupid
|
---|
| 2815 | // to handle offsets correctly
|
---|
| 2816 | place_cursor(li, cs, FALSE);
|
---|
| 2817 | } else {
|
---|
| 2818 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
| 2819 | // if this just the next line
|
---|
| 2820 | // try to optimize cursor movement
|
---|
| 2821 | // otherwise, use standard ESC sequence
|
---|
| 2822 | place_cursor(li, cs, li == (last_li+1) ? TRUE : FALSE);
|
---|
| 2823 | last_li= li;
|
---|
| 2824 | #else /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
|
---|
| 2825 | place_cursor(li, cs, FALSE); // use standard ESC sequence
|
---|
| 2826 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
|
---|
| 2827 | }
|
---|
| 2828 |
|
---|
| 2829 | // write line out to terminal
|
---|
| 2830 | {
|
---|
| 2831 | int nic = ce-cs+1;
|
---|
| 2832 | char *out = (char*)sp+cs;
|
---|
| 2833 |
|
---|
| 2834 | while(nic-- > 0) {
|
---|
| 2835 | putchar(*out);
|
---|
| 2836 | out++;
|
---|
| 2837 | }
|
---|
| 2838 | }
|
---|
| 2839 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
| 2840 | last_row = li;
|
---|
| 2841 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
|
---|
| 2842 | }
|
---|
| 2843 | }
|
---|
| 2844 |
|
---|
| 2845 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
| 2846 | place_cursor(crow, ccol, (crow == last_row) ? TRUE : FALSE);
|
---|
| 2847 | last_row = crow;
|
---|
| 2848 | #else
|
---|
| 2849 | place_cursor(crow, ccol, FALSE);
|
---|
| 2850 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */
|
---|
| 2851 |
|
---|
| 2852 | if (offset != old_offset)
|
---|
| 2853 | old_offset = offset;
|
---|
| 2854 | }
|
---|
| 2855 |
|
---|
| 2856 | //---------------------------------------------------------------------
|
---|
| 2857 | //----- the Ascii Chart -----------------------------------------------
|
---|
| 2858 | //
|
---|
| 2859 | // 00 nul 01 soh 02 stx 03 etx 04 eot 05 enq 06 ack 07 bel
|
---|
| 2860 | // 08 bs 09 ht 0a nl 0b vt 0c np 0d cr 0e so 0f si
|
---|
| 2861 | // 10 dle 11 dc1 12 dc2 13 dc3 14 dc4 15 nak 16 syn 17 etb
|
---|
| 2862 | // 18 can 19 em 1a sub 1b esc 1c fs 1d gs 1e rs 1f us
|
---|
| 2863 | // 20 sp 21 ! 22 " 23 # 24 $ 25 % 26 & 27 '
|
---|
| 2864 | // 28 ( 29 ) 2a * 2b + 2c , 2d - 2e . 2f /
|
---|
| 2865 | // 30 0 31 1 32 2 33 3 34 4 35 5 36 6 37 7
|
---|
| 2866 | // 38 8 39 9 3a : 3b ; 3c < 3d = 3e > 3f ?
|
---|
| 2867 | // 40 @ 41 A 42 B 43 C 44 D 45 E 46 F 47 G
|
---|
| 2868 | // 48 H 49 I 4a J 4b K 4c L 4d M 4e N 4f O
|
---|
| 2869 | // 50 P 51 Q 52 R 53 S 54 T 55 U 56 V 57 W
|
---|
| 2870 | // 58 X 59 Y 5a Z 5b [ 5c \ 5d ] 5e ^ 5f _
|
---|
| 2871 | // 60 ` 61 a 62 b 63 c 64 d 65 e 66 f 67 g
|
---|
| 2872 | // 68 h 69 i 6a j 6b k 6c l 6d m 6e n 6f o
|
---|
| 2873 | // 70 p 71 q 72 r 73 s 74 t 75 u 76 v 77 w
|
---|
| 2874 | // 78 x 79 y 7a z 7b { 7c | 7d } 7e ~ 7f del
|
---|
| 2875 | //---------------------------------------------------------------------
|
---|
| 2876 |
|
---|
| 2877 | //----- Execute a Vi Command -----------------------------------
|
---|
| 2878 | static void do_cmd(Byte c)
|
---|
| 2879 | {
|
---|
| 2880 | Byte c1, *p, *q, *msg, buf[9], *save_dot;
|
---|
| 2881 | int cnt, i, j, dir, yf;
|
---|
| 2882 |
|
---|
| 2883 | c1 = c; // quiet the compiler
|
---|
| 2884 | cnt = yf = dir = 0; // quiet the compiler
|
---|
| 2885 | p = q = save_dot = msg = buf; // quiet the compiler
|
---|
| 2886 | memset(buf, '\0', 9); // clear buf
|
---|
| 2887 |
|
---|
| 2888 | show_status_line();
|
---|
| 2889 |
|
---|
| 2890 | /* if this is a cursor key, skip these checks */
|
---|
| 2891 | switch (c) {
|
---|
| 2892 | case VI_K_UP:
|
---|
| 2893 | case VI_K_DOWN:
|
---|
| 2894 | case VI_K_LEFT:
|
---|
| 2895 | case VI_K_RIGHT:
|
---|
| 2896 | case VI_K_HOME:
|
---|
| 2897 | case VI_K_END:
|
---|
| 2898 | case VI_K_PAGEUP:
|
---|
| 2899 | case VI_K_PAGEDOWN:
|
---|
| 2900 | goto key_cmd_mode;
|
---|
| 2901 | }
|
---|
| 2902 |
|
---|
| 2903 | if (cmd_mode == 2) {
|
---|
| 2904 | // flip-flop Insert/Replace mode
|
---|
| 2905 | if (c == VI_K_INSERT) goto dc_i;
|
---|
| 2906 | // we are 'R'eplacing the current *dot with new char
|
---|
| 2907 | if (*dot == '\n') {
|
---|
| 2908 | // don't Replace past E-o-l
|
---|
| 2909 | cmd_mode = 1; // convert to insert
|
---|
| 2910 | } else {
|
---|
| 2911 | if (1 <= c || Isprint(c)) {
|
---|
| 2912 | if (c != 27)
|
---|
| 2913 | dot = yank_delete(dot, dot, 0, YANKDEL); // delete char
|
---|
| 2914 | dot = char_insert(dot, c); // insert new char
|
---|
| 2915 | }
|
---|
| 2916 | goto dc1;
|
---|
| 2917 | }
|
---|
| 2918 | }
|
---|
| 2919 | if (cmd_mode == 1) {
|
---|
| 2920 | // hitting "Insert" twice means "R" replace mode
|
---|
| 2921 | if (c == VI_K_INSERT) goto dc5;
|
---|
| 2922 | // insert the char c at "dot"
|
---|
| 2923 | if (1 <= c || Isprint(c)) {
|
---|
| 2924 | dot = char_insert(dot, c);
|
---|
| 2925 | }
|
---|
| 2926 | goto dc1;
|
---|
| 2927 | }
|
---|
| 2928 |
|
---|
| 2929 | key_cmd_mode:
|
---|
| 2930 | switch (c) {
|
---|
| 2931 | //case 0x01: // soh
|
---|
| 2932 | //case 0x09: // ht
|
---|
| 2933 | //case 0x0b: // vt
|
---|
| 2934 | //case 0x0e: // so
|
---|
| 2935 | //case 0x0f: // si
|
---|
| 2936 | //case 0x10: // dle
|
---|
| 2937 | //case 0x11: // dc1
|
---|
| 2938 | //case 0x13: // dc3
|
---|
| 2939 | #ifdef CONFIG_FEATURE_VI_CRASHME
|
---|
| 2940 | case 0x14: // dc4 ctrl-T
|
---|
| 2941 | crashme = (crashme == 0) ? 1 : 0;
|
---|
| 2942 | break;
|
---|
| 2943 | #endif /* CONFIG_FEATURE_VI_CRASHME */
|
---|
| 2944 | //case 0x16: // syn
|
---|
| 2945 | //case 0x17: // etb
|
---|
| 2946 | //case 0x18: // can
|
---|
| 2947 | //case 0x1c: // fs
|
---|
| 2948 | //case 0x1d: // gs
|
---|
| 2949 | //case 0x1e: // rs
|
---|
| 2950 | //case 0x1f: // us
|
---|
| 2951 | //case '!': // !-
|
---|
| 2952 | //case '#': // #-
|
---|
| 2953 | //case '&': // &-
|
---|
| 2954 | //case '(': // (-
|
---|
| 2955 | //case ')': // )-
|
---|
| 2956 | //case '*': // *-
|
---|
| 2957 | //case ',': // ,-
|
---|
| 2958 | //case '=': // =-
|
---|
| 2959 | //case '@': // @-
|
---|
| 2960 | //case 'F': // F-
|
---|
| 2961 | //case 'K': // K-
|
---|
| 2962 | //case 'Q': // Q-
|
---|
| 2963 | //case 'S': // S-
|
---|
| 2964 | //case 'T': // T-
|
---|
| 2965 | //case 'V': // V-
|
---|
| 2966 | //case '[': // [-
|
---|
| 2967 | //case '\\': // \-
|
---|
| 2968 | //case ']': // ]-
|
---|
| 2969 | //case '_': // _-
|
---|
| 2970 | //case '`': // `-
|
---|
| 2971 | //case 'g': // g-
|
---|
| 2972 | //case 'u': // u- FIXME- there is no undo
|
---|
| 2973 | //case 'v': // v-
|
---|
| 2974 | default: // unrecognised command
|
---|
| 2975 | buf[0] = c;
|
---|
| 2976 | buf[1] = '\0';
|
---|
| 2977 | if (c < ' ') {
|
---|
| 2978 | buf[0] = '^';
|
---|
| 2979 | buf[1] = c + '@';
|
---|
| 2980 | buf[2] = '\0';
|
---|
| 2981 | }
|
---|
| 2982 | ni((Byte *) buf);
|
---|
| 2983 | end_cmd_q(); // stop adding to q
|
---|
| 2984 | case 0x00: // nul- ignore
|
---|
| 2985 | break;
|
---|
| 2986 | case 2: // ctrl-B scroll up full screen
|
---|
| 2987 | case VI_K_PAGEUP: // Cursor Key Page Up
|
---|
| 2988 | dot_scroll(rows - 2, -1);
|
---|
| 2989 | break;
|
---|
| 2990 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS
|
---|
| 2991 | case 0x03: // ctrl-C interrupt
|
---|
| 2992 | longjmp(restart, 1);
|
---|
| 2993 | break;
|
---|
| 2994 | case 26: // ctrl-Z suspend
|
---|
| 2995 | suspend_sig(SIGTSTP);
|
---|
| 2996 | break;
|
---|
| 2997 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */
|
---|
| 2998 | case 4: // ctrl-D scroll down half screen
|
---|
| 2999 | dot_scroll((rows - 2) / 2, 1);
|
---|
| 3000 | break;
|
---|
| 3001 | case 5: // ctrl-E scroll down one line
|
---|
| 3002 | dot_scroll(1, 1);
|
---|
| 3003 | break;
|
---|
| 3004 | case 6: // ctrl-F scroll down full screen
|
---|
| 3005 | case VI_K_PAGEDOWN: // Cursor Key Page Down
|
---|
| 3006 | dot_scroll(rows - 2, 1);
|
---|
| 3007 | break;
|
---|
| 3008 | case 7: // ctrl-G show current status
|
---|
| 3009 | last_status_cksum = 0; // force status update
|
---|
| 3010 | break;
|
---|
| 3011 | case 'h': // h- move left
|
---|
| 3012 | case VI_K_LEFT: // cursor key Left
|
---|
| 3013 | case 8: // ctrl-H- move left (This may be ERASE char)
|
---|
| 3014 | case 127: // DEL- move left (This may be ERASE char)
|
---|
| 3015 | if (cmdcnt-- > 1) {
|
---|
| 3016 | do_cmd(c);
|
---|
| 3017 | } // repeat cnt
|
---|
| 3018 | dot_left();
|
---|
| 3019 | break;
|
---|
| 3020 | case 10: // Newline ^J
|
---|
| 3021 | case 'j': // j- goto next line, same col
|
---|
| 3022 | case VI_K_DOWN: // cursor key Down
|
---|
| 3023 | if (cmdcnt-- > 1) {
|
---|
| 3024 | do_cmd(c);
|
---|
| 3025 | } // repeat cnt
|
---|
| 3026 | dot_next(); // go to next B-o-l
|
---|
| 3027 | dot = move_to_col(dot, ccol + offset); // try stay in same col
|
---|
| 3028 | break;
|
---|
| 3029 | case 12: // ctrl-L force redraw whole screen
|
---|
| 3030 | case 18: // ctrl-R force redraw
|
---|
| 3031 | place_cursor(0, 0, FALSE); // put cursor in correct place
|
---|
| 3032 | clear_to_eos(); // tel terminal to erase display
|
---|
| 3033 | (void) mysleep(10);
|
---|
| 3034 | screen_erase(); // erase the internal screen buffer
|
---|
| 3035 | last_status_cksum = 0; // force status update
|
---|
| 3036 | refresh(TRUE); // this will redraw the entire display
|
---|
| 3037 | break;
|
---|
| 3038 | case 13: // Carriage Return ^M
|
---|
| 3039 | case '+': // +- goto next line
|
---|
| 3040 | if (cmdcnt-- > 1) {
|
---|
| 3041 | do_cmd(c);
|
---|
| 3042 | } // repeat cnt
|
---|
| 3043 | dot_next();
|
---|
| 3044 | dot_skip_over_ws();
|
---|
| 3045 | break;
|
---|
| 3046 | case 21: // ctrl-U scroll up half screen
|
---|
| 3047 | dot_scroll((rows - 2) / 2, -1);
|
---|
| 3048 | break;
|
---|
| 3049 | case 25: // ctrl-Y scroll up one line
|
---|
| 3050 | dot_scroll(1, -1);
|
---|
| 3051 | break;
|
---|
| 3052 | case 27: // esc
|
---|
| 3053 | if (cmd_mode == 0)
|
---|
| 3054 | indicate_error(c);
|
---|
| 3055 | cmd_mode = 0; // stop insrting
|
---|
| 3056 | end_cmd_q();
|
---|
| 3057 | last_status_cksum = 0; // force status update
|
---|
| 3058 | break;
|
---|
| 3059 | case ' ': // move right
|
---|
| 3060 | case 'l': // move right
|
---|
| 3061 | case VI_K_RIGHT: // Cursor Key Right
|
---|
| 3062 | if (cmdcnt-- > 1) {
|
---|
| 3063 | do_cmd(c);
|
---|
| 3064 | } // repeat cnt
|
---|
| 3065 | dot_right();
|
---|
| 3066 | break;
|
---|
| 3067 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 3068 | case '"': // "- name a register to use for Delete/Yank
|
---|
| 3069 | c1 = get_one_char();
|
---|
| 3070 | c1 = tolower(c1);
|
---|
| 3071 | if (islower(c1)) {
|
---|
| 3072 | YDreg = c1 - 'a';
|
---|
| 3073 | } else {
|
---|
| 3074 | indicate_error(c);
|
---|
| 3075 | }
|
---|
| 3076 | break;
|
---|
| 3077 | case '\'': // '- goto a specific mark
|
---|
| 3078 | c1 = get_one_char();
|
---|
| 3079 | c1 = tolower(c1);
|
---|
| 3080 | if (islower(c1)) {
|
---|
| 3081 | c1 = c1 - 'a';
|
---|
| 3082 | // get the b-o-l
|
---|
| 3083 | q = mark[(int) c1];
|
---|
| 3084 | if (text <= q && q < end) {
|
---|
| 3085 | dot = q;
|
---|
| 3086 | dot_begin(); // go to B-o-l
|
---|
| 3087 | dot_skip_over_ws();
|
---|
| 3088 | }
|
---|
| 3089 | } else if (c1 == '\'') { // goto previous context
|
---|
| 3090 | dot = swap_context(dot); // swap current and previous context
|
---|
| 3091 | dot_begin(); // go to B-o-l
|
---|
| 3092 | dot_skip_over_ws();
|
---|
| 3093 | } else {
|
---|
| 3094 | indicate_error(c);
|
---|
| 3095 | }
|
---|
| 3096 | break;
|
---|
| 3097 | case 'm': // m- Mark a line
|
---|
| 3098 | // this is really stupid. If there are any inserts or deletes
|
---|
| 3099 | // between text[0] and dot then this mark will not point to the
|
---|
| 3100 | // correct location! It could be off by many lines!
|
---|
| 3101 | // Well..., at least its quick and dirty.
|
---|
| 3102 | c1 = get_one_char();
|
---|
| 3103 | c1 = tolower(c1);
|
---|
| 3104 | if (islower(c1)) {
|
---|
| 3105 | c1 = c1 - 'a';
|
---|
| 3106 | // remember the line
|
---|
| 3107 | mark[(int) c1] = dot;
|
---|
| 3108 | } else {
|
---|
| 3109 | indicate_error(c);
|
---|
| 3110 | }
|
---|
| 3111 | break;
|
---|
| 3112 | case 'P': // P- Put register before
|
---|
| 3113 | case 'p': // p- put register after
|
---|
| 3114 | p = reg[YDreg];
|
---|
| 3115 | if (p == 0) {
|
---|
| 3116 | psbs("Nothing in register %c", what_reg());
|
---|
| 3117 | break;
|
---|
| 3118 | }
|
---|
| 3119 | // are we putting whole lines or strings
|
---|
| 3120 | if (strchr((char *) p, '\n') != NULL) {
|
---|
| 3121 | if (c == 'P') {
|
---|
| 3122 | dot_begin(); // putting lines- Put above
|
---|
| 3123 | }
|
---|
| 3124 | if (c == 'p') {
|
---|
| 3125 | // are we putting after very last line?
|
---|
| 3126 | if (end_line(dot) == (end - 1)) {
|
---|
| 3127 | dot = end; // force dot to end of text[]
|
---|
| 3128 | } else {
|
---|
| 3129 | dot_next(); // next line, then put before
|
---|
| 3130 | }
|
---|
| 3131 | }
|
---|
| 3132 | } else {
|
---|
| 3133 | if (c == 'p')
|
---|
| 3134 | dot_right(); // move to right, can move to NL
|
---|
| 3135 | }
|
---|
| 3136 | dot = string_insert(dot, p); // insert the string
|
---|
| 3137 | end_cmd_q(); // stop adding to q
|
---|
| 3138 | break;
|
---|
| 3139 | case 'U': // U- Undo; replace current line with original version
|
---|
| 3140 | if (reg[Ureg] != 0) {
|
---|
| 3141 | p = begin_line(dot);
|
---|
| 3142 | q = end_line(dot);
|
---|
| 3143 | p = text_hole_delete(p, q); // delete cur line
|
---|
| 3144 | p = string_insert(p, reg[Ureg]); // insert orig line
|
---|
| 3145 | dot = p;
|
---|
| 3146 | dot_skip_over_ws();
|
---|
| 3147 | }
|
---|
| 3148 | break;
|
---|
| 3149 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 3150 | case '$': // $- goto end of line
|
---|
| 3151 | case VI_K_END: // Cursor Key End
|
---|
| 3152 | if (cmdcnt-- > 1) {
|
---|
| 3153 | do_cmd(c);
|
---|
| 3154 | } // repeat cnt
|
---|
| 3155 | dot = end_line(dot);
|
---|
| 3156 | break;
|
---|
| 3157 | case '%': // %- find matching char of pair () [] {}
|
---|
| 3158 | for (q = dot; q < end && *q != '\n'; q++) {
|
---|
| 3159 | if (strchr("()[]{}", *q) != NULL) {
|
---|
| 3160 | // we found half of a pair
|
---|
| 3161 | p = find_pair(q, *q);
|
---|
| 3162 | if (p == NULL) {
|
---|
| 3163 | indicate_error(c);
|
---|
| 3164 | } else {
|
---|
| 3165 | dot = p;
|
---|
| 3166 | }
|
---|
| 3167 | break;
|
---|
| 3168 | }
|
---|
| 3169 | }
|
---|
| 3170 | if (*q == '\n')
|
---|
| 3171 | indicate_error(c);
|
---|
| 3172 | break;
|
---|
| 3173 | case 'f': // f- forward to a user specified char
|
---|
| 3174 | last_forward_char = get_one_char(); // get the search char
|
---|
| 3175 | //
|
---|
| 3176 | // dont separate these two commands. 'f' depends on ';'
|
---|
| 3177 | //
|
---|
| 3178 | //**** fall thru to ... ';'
|
---|
| 3179 | case ';': // ;- look at rest of line for last forward char
|
---|
| 3180 | if (cmdcnt-- > 1) {
|
---|
| 3181 | do_cmd(';');
|
---|
| 3182 | } // repeat cnt
|
---|
| 3183 | if (last_forward_char == 0) break;
|
---|
| 3184 | q = dot + 1;
|
---|
| 3185 | while (q < end - 1 && *q != '\n' && *q != last_forward_char) {
|
---|
| 3186 | q++;
|
---|
| 3187 | }
|
---|
| 3188 | if (*q == last_forward_char)
|
---|
| 3189 | dot = q;
|
---|
| 3190 | break;
|
---|
| 3191 | case '-': // -- goto prev line
|
---|
| 3192 | if (cmdcnt-- > 1) {
|
---|
| 3193 | do_cmd(c);
|
---|
| 3194 | } // repeat cnt
|
---|
| 3195 | dot_prev();
|
---|
| 3196 | dot_skip_over_ws();
|
---|
| 3197 | break;
|
---|
| 3198 | #ifdef CONFIG_FEATURE_VI_DOT_CMD
|
---|
| 3199 | case '.': // .- repeat the last modifying command
|
---|
| 3200 | // Stuff the last_modifying_cmd back into stdin
|
---|
| 3201 | // and let it be re-executed.
|
---|
| 3202 | if (last_modifying_cmd != 0) {
|
---|
| 3203 | ioq = ioq_start = (Byte *) bb_xstrdup((char *) last_modifying_cmd);
|
---|
| 3204 | }
|
---|
| 3205 | break;
|
---|
| 3206 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
---|
| 3207 | #ifdef CONFIG_FEATURE_VI_SEARCH
|
---|
| 3208 | case '?': // /- search for a pattern
|
---|
| 3209 | case '/': // /- search for a pattern
|
---|
| 3210 | buf[0] = c;
|
---|
| 3211 | buf[1] = '\0';
|
---|
| 3212 | q = get_input_line(buf); // get input line- use "status line"
|
---|
| 3213 | if (strlen((char *) q) == 1)
|
---|
| 3214 | goto dc3; // if no pat re-use old pat
|
---|
| 3215 | if (strlen((char *) q) > 1) { // new pat- save it and find
|
---|
| 3216 | // there is a new pat
|
---|
| 3217 | free(last_search_pattern);
|
---|
| 3218 | last_search_pattern = (Byte *) bb_xstrdup((char *) q);
|
---|
| 3219 | goto dc3; // now find the pattern
|
---|
| 3220 | }
|
---|
| 3221 | // user changed mind and erased the "/"- do nothing
|
---|
| 3222 | break;
|
---|
| 3223 | case 'N': // N- backward search for last pattern
|
---|
| 3224 | if (cmdcnt-- > 1) {
|
---|
| 3225 | do_cmd(c);
|
---|
| 3226 | } // repeat cnt
|
---|
| 3227 | dir = BACK; // assume BACKWARD search
|
---|
| 3228 | p = dot - 1;
|
---|
| 3229 | if (last_search_pattern[0] == '?') {
|
---|
| 3230 | dir = FORWARD;
|
---|
| 3231 | p = dot + 1;
|
---|
| 3232 | }
|
---|
| 3233 | goto dc4; // now search for pattern
|
---|
| 3234 | break;
|
---|
| 3235 | case 'n': // n- repeat search for last pattern
|
---|
| 3236 | // search rest of text[] starting at next char
|
---|
| 3237 | // if search fails return orignal "p" not the "p+1" address
|
---|
| 3238 | if (cmdcnt-- > 1) {
|
---|
| 3239 | do_cmd(c);
|
---|
| 3240 | } // repeat cnt
|
---|
| 3241 | dc3:
|
---|
| 3242 | if (last_search_pattern == 0) {
|
---|
| 3243 | msg = (Byte *) "No previous regular expression";
|
---|
| 3244 | goto dc2;
|
---|
| 3245 | }
|
---|
| 3246 | if (last_search_pattern[0] == '/') {
|
---|
| 3247 | dir = FORWARD; // assume FORWARD search
|
---|
| 3248 | p = dot + 1;
|
---|
| 3249 | }
|
---|
| 3250 | if (last_search_pattern[0] == '?') {
|
---|
| 3251 | dir = BACK;
|
---|
| 3252 | p = dot - 1;
|
---|
| 3253 | }
|
---|
| 3254 | dc4:
|
---|
| 3255 | q = char_search(p, last_search_pattern + 1, dir, FULL);
|
---|
| 3256 | if (q != NULL) {
|
---|
| 3257 | dot = q; // good search, update "dot"
|
---|
| 3258 | msg = (Byte *) "";
|
---|
| 3259 | goto dc2;
|
---|
| 3260 | }
|
---|
| 3261 | // no pattern found between "dot" and "end"- continue at top
|
---|
| 3262 | p = text;
|
---|
| 3263 | if (dir == BACK) {
|
---|
| 3264 | p = end - 1;
|
---|
| 3265 | }
|
---|
| 3266 | q = char_search(p, last_search_pattern + 1, dir, FULL);
|
---|
| 3267 | if (q != NULL) { // found something
|
---|
| 3268 | dot = q; // found new pattern- goto it
|
---|
| 3269 | msg = (Byte *) "search hit BOTTOM, continuing at TOP";
|
---|
| 3270 | if (dir == BACK) {
|
---|
| 3271 | msg = (Byte *) "search hit TOP, continuing at BOTTOM";
|
---|
| 3272 | }
|
---|
| 3273 | } else {
|
---|
| 3274 | msg = (Byte *) "Pattern not found";
|
---|
| 3275 | }
|
---|
| 3276 | dc2:
|
---|
| 3277 | if (*msg) psbs("%s", msg);
|
---|
| 3278 | break;
|
---|
| 3279 | case '{': // {- move backward paragraph
|
---|
| 3280 | q = char_search(dot, (Byte *) "\n\n", BACK, FULL);
|
---|
| 3281 | if (q != NULL) { // found blank line
|
---|
| 3282 | dot = next_line(q); // move to next blank line
|
---|
| 3283 | }
|
---|
| 3284 | break;
|
---|
| 3285 | case '}': // }- move forward paragraph
|
---|
| 3286 | q = char_search(dot, (Byte *) "\n\n", FORWARD, FULL);
|
---|
| 3287 | if (q != NULL) { // found blank line
|
---|
| 3288 | dot = next_line(q); // move to next blank line
|
---|
| 3289 | }
|
---|
| 3290 | break;
|
---|
| 3291 | #endif /* CONFIG_FEATURE_VI_SEARCH */
|
---|
| 3292 | case '0': // 0- goto begining of line
|
---|
| 3293 | case '1': // 1-
|
---|
| 3294 | case '2': // 2-
|
---|
| 3295 | case '3': // 3-
|
---|
| 3296 | case '4': // 4-
|
---|
| 3297 | case '5': // 5-
|
---|
| 3298 | case '6': // 6-
|
---|
| 3299 | case '7': // 7-
|
---|
| 3300 | case '8': // 8-
|
---|
| 3301 | case '9': // 9-
|
---|
| 3302 | if (c == '0' && cmdcnt < 1) {
|
---|
| 3303 | dot_begin(); // this was a standalone zero
|
---|
| 3304 | } else {
|
---|
| 3305 | cmdcnt = cmdcnt * 10 + (c - '0'); // this 0 is part of a number
|
---|
| 3306 | }
|
---|
| 3307 | break;
|
---|
| 3308 | case ':': // :- the colon mode commands
|
---|
| 3309 | p = get_input_line((Byte *) ":"); // get input line- use "status line"
|
---|
| 3310 | #ifdef CONFIG_FEATURE_VI_COLON
|
---|
| 3311 | colon(p); // execute the command
|
---|
| 3312 | #else /* CONFIG_FEATURE_VI_COLON */
|
---|
| 3313 | if (*p == ':')
|
---|
| 3314 | p++; // move past the ':'
|
---|
| 3315 | cnt = strlen((char *) p);
|
---|
| 3316 | if (cnt <= 0)
|
---|
| 3317 | break;
|
---|
| 3318 | if (strncasecmp((char *) p, "quit", cnt) == 0 ||
|
---|
| 3319 | strncasecmp((char *) p, "q!", cnt) == 0) { // delete lines
|
---|
| 3320 | if (file_modified && p[1] != '!') {
|
---|
| 3321 | psbs("No write since last change (:quit! overrides)");
|
---|
| 3322 | } else {
|
---|
| 3323 | editing = 0;
|
---|
| 3324 | }
|
---|
| 3325 | } else if (strncasecmp((char *) p, "write", cnt) == 0
|
---|
| 3326 | || strncasecmp((char *) p, "wq", cnt) == 0
|
---|
| 3327 | || strncasecmp((char *) p, "wn", cnt) == 0
|
---|
| 3328 | || strncasecmp((char *) p, "x", cnt) == 0) {
|
---|
| 3329 | cnt = file_write(cfn, text, end - 1);
|
---|
| 3330 | if (cnt < 0) {
|
---|
| 3331 | if (cnt == -1)
|
---|
| 3332 | psbs("Write error: %s", strerror(errno));
|
---|
| 3333 | } else {
|
---|
| 3334 | file_modified = 0;
|
---|
| 3335 | last_file_modified = -1;
|
---|
| 3336 | psb("\"%s\" %dL, %dC", cfn, count_lines(text, end - 1), cnt);
|
---|
| 3337 | if (p[0] == 'x' || p[1] == 'q' || p[1] == 'n' ||
|
---|
| 3338 | p[0] == 'X' || p[1] == 'Q' || p[1] == 'N') {
|
---|
| 3339 | editing = 0;
|
---|
| 3340 | }
|
---|
| 3341 | }
|
---|
| 3342 | } else if (strncasecmp((char *) p, "file", cnt) == 0 ) {
|
---|
| 3343 | last_status_cksum = 0; // force status update
|
---|
| 3344 | } else if (sscanf((char *) p, "%d", &j) > 0) {
|
---|
| 3345 | dot = find_line(j); // go to line # j
|
---|
| 3346 | dot_skip_over_ws();
|
---|
| 3347 | } else { // unrecognised cmd
|
---|
| 3348 | ni((Byte *) p);
|
---|
| 3349 | }
|
---|
| 3350 | #endif /* CONFIG_FEATURE_VI_COLON */
|
---|
| 3351 | break;
|
---|
| 3352 | case '<': // <- Left shift something
|
---|
| 3353 | case '>': // >- Right shift something
|
---|
| 3354 | cnt = count_lines(text, dot); // remember what line we are on
|
---|
| 3355 | c1 = get_one_char(); // get the type of thing to delete
|
---|
| 3356 | find_range(&p, &q, c1);
|
---|
| 3357 | (void) yank_delete(p, q, 1, YANKONLY); // save copy before change
|
---|
| 3358 | p = begin_line(p);
|
---|
| 3359 | q = end_line(q);
|
---|
| 3360 | i = count_lines(p, q); // # of lines we are shifting
|
---|
| 3361 | for ( ; i > 0; i--, p = next_line(p)) {
|
---|
| 3362 | if (c == '<') {
|
---|
| 3363 | // shift left- remove tab or 8 spaces
|
---|
| 3364 | if (*p == '\t') {
|
---|
| 3365 | // shrink buffer 1 char
|
---|
| 3366 | (void) text_hole_delete(p, p);
|
---|
| 3367 | } else if (*p == ' ') {
|
---|
| 3368 | // we should be calculating columns, not just SPACE
|
---|
| 3369 | for (j = 0; *p == ' ' && j < tabstop; j++) {
|
---|
| 3370 | (void) text_hole_delete(p, p);
|
---|
| 3371 | }
|
---|
| 3372 | }
|
---|
| 3373 | } else if (c == '>') {
|
---|
| 3374 | // shift right -- add tab or 8 spaces
|
---|
| 3375 | (void) char_insert(p, '\t');
|
---|
| 3376 | }
|
---|
| 3377 | }
|
---|
| 3378 | dot = find_line(cnt); // what line were we on
|
---|
| 3379 | dot_skip_over_ws();
|
---|
| 3380 | end_cmd_q(); // stop adding to q
|
---|
| 3381 | break;
|
---|
| 3382 | case 'A': // A- append at e-o-l
|
---|
| 3383 | dot_end(); // go to e-o-l
|
---|
| 3384 | //**** fall thru to ... 'a'
|
---|
| 3385 | case 'a': // a- append after current char
|
---|
| 3386 | if (*dot != '\n')
|
---|
| 3387 | dot++;
|
---|
| 3388 | goto dc_i;
|
---|
| 3389 | break;
|
---|
| 3390 | case 'B': // B- back a blank-delimited Word
|
---|
| 3391 | case 'E': // E- end of a blank-delimited word
|
---|
| 3392 | case 'W': // W- forward a blank-delimited word
|
---|
| 3393 | if (cmdcnt-- > 1) {
|
---|
| 3394 | do_cmd(c);
|
---|
| 3395 | } // repeat cnt
|
---|
| 3396 | dir = FORWARD;
|
---|
| 3397 | if (c == 'B')
|
---|
| 3398 | dir = BACK;
|
---|
| 3399 | if (c == 'W' || isspace(dot[dir])) {
|
---|
| 3400 | dot = skip_thing(dot, 1, dir, S_TO_WS);
|
---|
| 3401 | dot = skip_thing(dot, 2, dir, S_OVER_WS);
|
---|
| 3402 | }
|
---|
| 3403 | if (c != 'W')
|
---|
| 3404 | dot = skip_thing(dot, 1, dir, S_BEFORE_WS);
|
---|
| 3405 | break;
|
---|
| 3406 | case 'C': // C- Change to e-o-l
|
---|
| 3407 | case 'D': // D- delete to e-o-l
|
---|
| 3408 | save_dot = dot;
|
---|
| 3409 | dot = dollar_line(dot); // move to before NL
|
---|
| 3410 | // copy text into a register and delete
|
---|
| 3411 | dot = yank_delete(save_dot, dot, 0, YANKDEL); // delete to e-o-l
|
---|
| 3412 | if (c == 'C')
|
---|
| 3413 | goto dc_i; // start inserting
|
---|
| 3414 | #ifdef CONFIG_FEATURE_VI_DOT_CMD
|
---|
| 3415 | if (c == 'D')
|
---|
| 3416 | end_cmd_q(); // stop adding to q
|
---|
| 3417 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */
|
---|
| 3418 | break;
|
---|
| 3419 | case 'G': // G- goto to a line number (default= E-O-F)
|
---|
| 3420 | dot = end - 1; // assume E-O-F
|
---|
| 3421 | if (cmdcnt > 0) {
|
---|
| 3422 | dot = find_line(cmdcnt); // what line is #cmdcnt
|
---|
| 3423 | }
|
---|
| 3424 | dot_skip_over_ws();
|
---|
| 3425 | break;
|
---|
| 3426 | case 'H': // H- goto top line on screen
|
---|
| 3427 | dot = screenbegin;
|
---|
| 3428 | if (cmdcnt > (rows - 1)) {
|
---|
| 3429 | cmdcnt = (rows - 1);
|
---|
| 3430 | }
|
---|
| 3431 | if (cmdcnt-- > 1) {
|
---|
| 3432 | do_cmd('+');
|
---|
| 3433 | } // repeat cnt
|
---|
| 3434 | dot_skip_over_ws();
|
---|
| 3435 | break;
|
---|
| 3436 | case 'I': // I- insert before first non-blank
|
---|
| 3437 | dot_begin(); // 0
|
---|
| 3438 | dot_skip_over_ws();
|
---|
| 3439 | //**** fall thru to ... 'i'
|
---|
| 3440 | case 'i': // i- insert before current char
|
---|
| 3441 | case VI_K_INSERT: // Cursor Key Insert
|
---|
| 3442 | dc_i:
|
---|
| 3443 | cmd_mode = 1; // start insrting
|
---|
| 3444 | break;
|
---|
| 3445 | case 'J': // J- join current and next lines together
|
---|
| 3446 | if (cmdcnt-- > 2) {
|
---|
| 3447 | do_cmd(c);
|
---|
| 3448 | } // repeat cnt
|
---|
| 3449 | dot_end(); // move to NL
|
---|
| 3450 | if (dot < end - 1) { // make sure not last char in text[]
|
---|
| 3451 | *dot++ = ' '; // replace NL with space
|
---|
| 3452 | file_modified++;
|
---|
| 3453 | while (isblnk(*dot)) { // delete leading WS
|
---|
| 3454 | dot_delete();
|
---|
| 3455 | }
|
---|
| 3456 | }
|
---|
| 3457 | end_cmd_q(); // stop adding to q
|
---|
| 3458 | break;
|
---|
| 3459 | case 'L': // L- goto bottom line on screen
|
---|
| 3460 | dot = end_screen();
|
---|
| 3461 | if (cmdcnt > (rows - 1)) {
|
---|
| 3462 | cmdcnt = (rows - 1);
|
---|
| 3463 | }
|
---|
| 3464 | if (cmdcnt-- > 1) {
|
---|
| 3465 | do_cmd('-');
|
---|
| 3466 | } // repeat cnt
|
---|
| 3467 | dot_begin();
|
---|
| 3468 | dot_skip_over_ws();
|
---|
| 3469 | break;
|
---|
| 3470 | case 'M': // M- goto middle line on screen
|
---|
| 3471 | dot = screenbegin;
|
---|
| 3472 | for (cnt = 0; cnt < (rows-1) / 2; cnt++)
|
---|
| 3473 | dot = next_line(dot);
|
---|
| 3474 | break;
|
---|
| 3475 | case 'O': // O- open a empty line above
|
---|
| 3476 | // 0i\n ESC -i
|
---|
| 3477 | p = begin_line(dot);
|
---|
| 3478 | if (p[-1] == '\n') {
|
---|
| 3479 | dot_prev();
|
---|
| 3480 | case 'o': // o- open a empty line below; Yes, I know it is in the middle of the "if (..."
|
---|
| 3481 | dot_end();
|
---|
| 3482 | dot = char_insert(dot, '\n');
|
---|
| 3483 | } else {
|
---|
| 3484 | dot_begin(); // 0
|
---|
| 3485 | dot = char_insert(dot, '\n'); // i\n ESC
|
---|
| 3486 | dot_prev(); // -
|
---|
| 3487 | }
|
---|
| 3488 | goto dc_i;
|
---|
| 3489 | break;
|
---|
| 3490 | case 'R': // R- continuous Replace char
|
---|
| 3491 | dc5:
|
---|
| 3492 | cmd_mode = 2;
|
---|
| 3493 | break;
|
---|
| 3494 | case 'X': // X- delete char before dot
|
---|
| 3495 | case 'x': // x- delete the current char
|
---|
| 3496 | case 's': // s- substitute the current char
|
---|
| 3497 | if (cmdcnt-- > 1) {
|
---|
| 3498 | do_cmd(c);
|
---|
| 3499 | } // repeat cnt
|
---|
| 3500 | dir = 0;
|
---|
| 3501 | if (c == 'X')
|
---|
| 3502 | dir = -1;
|
---|
| 3503 | if (dot[dir] != '\n') {
|
---|
| 3504 | if (c == 'X')
|
---|
| 3505 | dot--; // delete prev char
|
---|
| 3506 | dot = yank_delete(dot, dot, 0, YANKDEL); // delete char
|
---|
| 3507 | }
|
---|
| 3508 | if (c == 's')
|
---|
| 3509 | goto dc_i; // start insrting
|
---|
| 3510 | end_cmd_q(); // stop adding to q
|
---|
| 3511 | break;
|
---|
| 3512 | case 'Z': // Z- if modified, {write}; exit
|
---|
| 3513 | // ZZ means to save file (if necessary), then exit
|
---|
| 3514 | c1 = get_one_char();
|
---|
| 3515 | if (c1 != 'Z') {
|
---|
| 3516 | indicate_error(c);
|
---|
| 3517 | break;
|
---|
| 3518 | }
|
---|
| 3519 | if (file_modified) {
|
---|
| 3520 | #ifdef CONFIG_FEATURE_VI_READONLY
|
---|
| 3521 | if (vi_readonly || readonly) {
|
---|
| 3522 | psbs("\"%s\" File is read only", cfn);
|
---|
| 3523 | break;
|
---|
| 3524 | }
|
---|
| 3525 | #endif /* CONFIG_FEATURE_VI_READONLY */
|
---|
| 3526 | cnt = file_write(cfn, text, end - 1);
|
---|
| 3527 | if (cnt < 0) {
|
---|
| 3528 | if (cnt == -1)
|
---|
| 3529 | psbs("Write error: %s", strerror(errno));
|
---|
| 3530 | } else if (cnt == (end - 1 - text + 1)) {
|
---|
| 3531 | editing = 0;
|
---|
| 3532 | }
|
---|
| 3533 | } else {
|
---|
| 3534 | editing = 0;
|
---|
| 3535 | }
|
---|
| 3536 | break;
|
---|
| 3537 | case '^': // ^- move to first non-blank on line
|
---|
| 3538 | dot_begin();
|
---|
| 3539 | dot_skip_over_ws();
|
---|
| 3540 | break;
|
---|
| 3541 | case 'b': // b- back a word
|
---|
| 3542 | case 'e': // e- end of word
|
---|
| 3543 | if (cmdcnt-- > 1) {
|
---|
| 3544 | do_cmd(c);
|
---|
| 3545 | } // repeat cnt
|
---|
| 3546 | dir = FORWARD;
|
---|
| 3547 | if (c == 'b')
|
---|
| 3548 | dir = BACK;
|
---|
| 3549 | if ((dot + dir) < text || (dot + dir) > end - 1)
|
---|
| 3550 | break;
|
---|
| 3551 | dot += dir;
|
---|
| 3552 | if (isspace(*dot)) {
|
---|
| 3553 | dot = skip_thing(dot, (c == 'e') ? 2 : 1, dir, S_OVER_WS);
|
---|
| 3554 | }
|
---|
| 3555 | if (isalnum(*dot) || *dot == '_') {
|
---|
| 3556 | dot = skip_thing(dot, 1, dir, S_END_ALNUM);
|
---|
| 3557 | } else if (ispunct(*dot)) {
|
---|
| 3558 | dot = skip_thing(dot, 1, dir, S_END_PUNCT);
|
---|
| 3559 | }
|
---|
| 3560 | break;
|
---|
| 3561 | case 'c': // c- change something
|
---|
| 3562 | case 'd': // d- delete something
|
---|
| 3563 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 3564 | case 'y': // y- yank something
|
---|
| 3565 | case 'Y': // Y- Yank a line
|
---|
| 3566 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 3567 | yf = YANKDEL; // assume either "c" or "d"
|
---|
| 3568 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 3569 | if (c == 'y' || c == 'Y')
|
---|
| 3570 | yf = YANKONLY;
|
---|
| 3571 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 3572 | c1 = 'y';
|
---|
| 3573 | if (c != 'Y')
|
---|
| 3574 | c1 = get_one_char(); // get the type of thing to delete
|
---|
| 3575 | find_range(&p, &q, c1);
|
---|
| 3576 | if (c1 == 27) { // ESC- user changed mind and wants out
|
---|
| 3577 | c = c1 = 27; // Escape- do nothing
|
---|
| 3578 | } else if (strchr("wW", c1)) {
|
---|
| 3579 | if (c == 'c') {
|
---|
| 3580 | // don't include trailing WS as part of word
|
---|
| 3581 | while (isblnk(*q)) {
|
---|
| 3582 | if (q <= text || q[-1] == '\n')
|
---|
| 3583 | break;
|
---|
| 3584 | q--;
|
---|
| 3585 | }
|
---|
| 3586 | }
|
---|
| 3587 | dot = yank_delete(p, q, 0, yf); // delete word
|
---|
| 3588 | } else if (strchr("^0bBeEft$", c1)) {
|
---|
| 3589 | // single line copy text into a register and delete
|
---|
| 3590 | dot = yank_delete(p, q, 0, yf); // delete word
|
---|
| 3591 | } else if (strchr("cdykjHL%+-{}\r\n", c1)) {
|
---|
| 3592 | // multiple line copy text into a register and delete
|
---|
| 3593 | dot = yank_delete(p, q, 1, yf); // delete lines
|
---|
| 3594 | if (c == 'c') {
|
---|
| 3595 | dot = char_insert(dot, '\n');
|
---|
| 3596 | // on the last line of file don't move to prev line
|
---|
| 3597 | if (dot != (end-1)) {
|
---|
| 3598 | dot_prev();
|
---|
| 3599 | }
|
---|
| 3600 | } else if (c == 'd') {
|
---|
| 3601 | dot_begin();
|
---|
| 3602 | dot_skip_over_ws();
|
---|
| 3603 | }
|
---|
| 3604 | } else {
|
---|
| 3605 | // could not recognize object
|
---|
| 3606 | c = c1 = 27; // error-
|
---|
| 3607 | indicate_error(c);
|
---|
| 3608 | }
|
---|
| 3609 | if (c1 != 27) {
|
---|
| 3610 | // if CHANGING, not deleting, start inserting after the delete
|
---|
| 3611 | if (c == 'c') {
|
---|
| 3612 | strcpy((char *) buf, "Change");
|
---|
| 3613 | goto dc_i; // start inserting
|
---|
| 3614 | }
|
---|
| 3615 | if (c == 'd') {
|
---|
| 3616 | strcpy((char *) buf, "Delete");
|
---|
| 3617 | }
|
---|
| 3618 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 3619 | if (c == 'y' || c == 'Y') {
|
---|
| 3620 | strcpy((char *) buf, "Yank");
|
---|
| 3621 | }
|
---|
| 3622 | p = reg[YDreg];
|
---|
| 3623 | q = p + strlen((char *) p);
|
---|
| 3624 | for (cnt = 0; p <= q; p++) {
|
---|
| 3625 | if (*p == '\n')
|
---|
| 3626 | cnt++;
|
---|
| 3627 | }
|
---|
| 3628 | psb("%s %d lines (%d chars) using [%c]",
|
---|
| 3629 | buf, cnt, strlen((char *) reg[YDreg]), what_reg());
|
---|
| 3630 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 3631 | end_cmd_q(); // stop adding to q
|
---|
| 3632 | }
|
---|
| 3633 | break;
|
---|
| 3634 | case 'k': // k- goto prev line, same col
|
---|
| 3635 | case VI_K_UP: // cursor key Up
|
---|
| 3636 | if (cmdcnt-- > 1) {
|
---|
| 3637 | do_cmd(c);
|
---|
| 3638 | } // repeat cnt
|
---|
| 3639 | dot_prev();
|
---|
| 3640 | dot = move_to_col(dot, ccol + offset); // try stay in same col
|
---|
| 3641 | break;
|
---|
| 3642 | case 'r': // r- replace the current char with user input
|
---|
| 3643 | c1 = get_one_char(); // get the replacement char
|
---|
| 3644 | if (*dot != '\n') {
|
---|
| 3645 | *dot = c1;
|
---|
| 3646 | file_modified++; // has the file been modified
|
---|
| 3647 | }
|
---|
| 3648 | end_cmd_q(); // stop adding to q
|
---|
| 3649 | break;
|
---|
| 3650 | case 't': // t- move to char prior to next x
|
---|
| 3651 | last_forward_char = get_one_char();
|
---|
| 3652 | do_cmd(';');
|
---|
| 3653 | if (*dot == last_forward_char)
|
---|
| 3654 | dot_left();
|
---|
| 3655 | last_forward_char= 0;
|
---|
| 3656 | break;
|
---|
| 3657 | case 'w': // w- forward a word
|
---|
| 3658 | if (cmdcnt-- > 1) {
|
---|
| 3659 | do_cmd(c);
|
---|
| 3660 | } // repeat cnt
|
---|
| 3661 | if (isalnum(*dot) || *dot == '_') { // we are on ALNUM
|
---|
| 3662 | dot = skip_thing(dot, 1, FORWARD, S_END_ALNUM);
|
---|
| 3663 | } else if (ispunct(*dot)) { // we are on PUNCT
|
---|
| 3664 | dot = skip_thing(dot, 1, FORWARD, S_END_PUNCT);
|
---|
| 3665 | }
|
---|
| 3666 | if (dot < end - 1)
|
---|
| 3667 | dot++; // move over word
|
---|
| 3668 | if (isspace(*dot)) {
|
---|
| 3669 | dot = skip_thing(dot, 2, FORWARD, S_OVER_WS);
|
---|
| 3670 | }
|
---|
| 3671 | break;
|
---|
| 3672 | case 'z': // z-
|
---|
| 3673 | c1 = get_one_char(); // get the replacement char
|
---|
| 3674 | cnt = 0;
|
---|
| 3675 | if (c1 == '.')
|
---|
| 3676 | cnt = (rows - 2) / 2; // put dot at center
|
---|
| 3677 | if (c1 == '-')
|
---|
| 3678 | cnt = rows - 2; // put dot at bottom
|
---|
| 3679 | screenbegin = begin_line(dot); // start dot at top
|
---|
| 3680 | dot_scroll(cnt, -1);
|
---|
| 3681 | break;
|
---|
| 3682 | case '|': // |- move to column "cmdcnt"
|
---|
| 3683 | dot = move_to_col(dot, cmdcnt - 1); // try to move to column
|
---|
| 3684 | break;
|
---|
| 3685 | case '~': // ~- flip the case of letters a-z -> A-Z
|
---|
| 3686 | if (cmdcnt-- > 1) {
|
---|
| 3687 | do_cmd(c);
|
---|
| 3688 | } // repeat cnt
|
---|
| 3689 | if (islower(*dot)) {
|
---|
| 3690 | *dot = toupper(*dot);
|
---|
| 3691 | file_modified++; // has the file been modified
|
---|
| 3692 | } else if (isupper(*dot)) {
|
---|
| 3693 | *dot = tolower(*dot);
|
---|
| 3694 | file_modified++; // has the file been modified
|
---|
| 3695 | }
|
---|
| 3696 | dot_right();
|
---|
| 3697 | end_cmd_q(); // stop adding to q
|
---|
| 3698 | break;
|
---|
| 3699 | //----- The Cursor and Function Keys -----------------------------
|
---|
| 3700 | case VI_K_HOME: // Cursor Key Home
|
---|
| 3701 | dot_begin();
|
---|
| 3702 | break;
|
---|
| 3703 | // The Fn keys could point to do_macro which could translate them
|
---|
| 3704 | case VI_K_FUN1: // Function Key F1
|
---|
| 3705 | case VI_K_FUN2: // Function Key F2
|
---|
| 3706 | case VI_K_FUN3: // Function Key F3
|
---|
| 3707 | case VI_K_FUN4: // Function Key F4
|
---|
| 3708 | case VI_K_FUN5: // Function Key F5
|
---|
| 3709 | case VI_K_FUN6: // Function Key F6
|
---|
| 3710 | case VI_K_FUN7: // Function Key F7
|
---|
| 3711 | case VI_K_FUN8: // Function Key F8
|
---|
| 3712 | case VI_K_FUN9: // Function Key F9
|
---|
| 3713 | case VI_K_FUN10: // Function Key F10
|
---|
| 3714 | case VI_K_FUN11: // Function Key F11
|
---|
| 3715 | case VI_K_FUN12: // Function Key F12
|
---|
| 3716 | break;
|
---|
| 3717 | }
|
---|
| 3718 |
|
---|
| 3719 | dc1:
|
---|
| 3720 | // if text[] just became empty, add back an empty line
|
---|
| 3721 | if (end == text) {
|
---|
| 3722 | (void) char_insert(text, '\n'); // start empty buf with dummy line
|
---|
| 3723 | dot = text;
|
---|
| 3724 | }
|
---|
| 3725 | // it is OK for dot to exactly equal to end, otherwise check dot validity
|
---|
| 3726 | if (dot != end) {
|
---|
| 3727 | dot = bound_dot(dot); // make sure "dot" is valid
|
---|
| 3728 | }
|
---|
| 3729 | #ifdef CONFIG_FEATURE_VI_YANKMARK
|
---|
| 3730 | check_context(c); // update the current context
|
---|
| 3731 | #endif /* CONFIG_FEATURE_VI_YANKMARK */
|
---|
| 3732 |
|
---|
| 3733 | if (!isdigit(c))
|
---|
| 3734 | cmdcnt = 0; // cmd was not a number, reset cmdcnt
|
---|
| 3735 | cnt = dot - begin_line(dot);
|
---|
| 3736 | // Try to stay off of the Newline
|
---|
| 3737 | if (*dot == '\n' && cnt > 0 && cmd_mode == 0)
|
---|
| 3738 | dot--;
|
---|
| 3739 | }
|
---|
| 3740 |
|
---|
| 3741 | #ifdef CONFIG_FEATURE_VI_CRASHME
|
---|
| 3742 | static int totalcmds = 0;
|
---|
| 3743 | static int Mp = 85; // Movement command Probability
|
---|
| 3744 | static int Np = 90; // Non-movement command Probability
|
---|
| 3745 | static int Dp = 96; // Delete command Probability
|
---|
| 3746 | static int Ip = 97; // Insert command Probability
|
---|
| 3747 | static int Yp = 98; // Yank command Probability
|
---|
| 3748 | static int Pp = 99; // Put command Probability
|
---|
| 3749 | static int M = 0, N = 0, I = 0, D = 0, Y = 0, P = 0, U = 0;
|
---|
| 3750 | char chars[20] = "\t012345 abcdABCD-=.$";
|
---|
| 3751 | char *words[20] = { "this", "is", "a", "test",
|
---|
| 3752 | "broadcast", "the", "emergency", "of",
|
---|
| 3753 | "system", "quick", "brown", "fox",
|
---|
| 3754 | "jumped", "over", "lazy", "dogs",
|
---|
| 3755 | "back", "January", "Febuary", "March"
|
---|
| 3756 | };
|
---|
| 3757 | char *lines[20] = {
|
---|
| 3758 | "You should have received a copy of the GNU General Public License\n",
|
---|
| 3759 | "char c, cm, *cmd, *cmd1;\n",
|
---|
| 3760 | "generate a command by percentages\n",
|
---|
| 3761 | "Numbers may be typed as a prefix to some commands.\n",
|
---|
| 3762 | "Quit, discarding changes!\n",
|
---|
| 3763 | "Forced write, if permission originally not valid.\n",
|
---|
| 3764 | "In general, any ex or ed command (such as substitute or delete).\n",
|
---|
| 3765 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
|
---|
| 3766 | "Please get w/ me and I will go over it with you.\n",
|
---|
| 3767 | "The following is a list of scheduled, committed changes.\n",
|
---|
| 3768 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
|
---|
| 3769 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
|
---|
| 3770 | "Any question about transactions please contact Sterling Huxley.\n",
|
---|
| 3771 | "I will try to get back to you by Friday, December 31.\n",
|
---|
| 3772 | "This Change will be implemented on Friday.\n",
|
---|
| 3773 | "Let me know if you have problems accessing this;\n",
|
---|
| 3774 | "Sterling Huxley recently added you to the access list.\n",
|
---|
| 3775 | "Would you like to go to lunch?\n",
|
---|
| 3776 | "The last command will be automatically run.\n",
|
---|
| 3777 | "This is too much english for a computer geek.\n",
|
---|
| 3778 | };
|
---|
| 3779 | char *multilines[20] = {
|
---|
| 3780 | "You should have received a copy of the GNU General Public License\n",
|
---|
| 3781 | "char c, cm, *cmd, *cmd1;\n",
|
---|
| 3782 | "generate a command by percentages\n",
|
---|
| 3783 | "Numbers may be typed as a prefix to some commands.\n",
|
---|
| 3784 | "Quit, discarding changes!\n",
|
---|
| 3785 | "Forced write, if permission originally not valid.\n",
|
---|
| 3786 | "In general, any ex or ed command (such as substitute or delete).\n",
|
---|
| 3787 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
|
---|
| 3788 | "Please get w/ me and I will go over it with you.\n",
|
---|
| 3789 | "The following is a list of scheduled, committed changes.\n",
|
---|
| 3790 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
|
---|
| 3791 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
|
---|
| 3792 | "Any question about transactions please contact Sterling Huxley.\n",
|
---|
| 3793 | "I will try to get back to you by Friday, December 31.\n",
|
---|
| 3794 | "This Change will be implemented on Friday.\n",
|
---|
| 3795 | "Let me know if you have problems accessing this;\n",
|
---|
| 3796 | "Sterling Huxley recently added you to the access list.\n",
|
---|
| 3797 | "Would you like to go to lunch?\n",
|
---|
| 3798 | "The last command will be automatically run.\n",
|
---|
| 3799 | "This is too much english for a computer geek.\n",
|
---|
| 3800 | };
|
---|
| 3801 |
|
---|
| 3802 | // create a random command to execute
|
---|
| 3803 | static void crash_dummy()
|
---|
| 3804 | {
|
---|
| 3805 | static int sleeptime; // how long to pause between commands
|
---|
| 3806 | char c, cm, *cmd, *cmd1;
|
---|
| 3807 | int i, cnt, thing, rbi, startrbi, percent;
|
---|
| 3808 |
|
---|
| 3809 | // "dot" movement commands
|
---|
| 3810 | cmd1 = " \n\r\002\004\005\006\025\0310^$-+wWeEbBhjklHL";
|
---|
| 3811 |
|
---|
| 3812 | // is there already a command running?
|
---|
| 3813 | if (readed_for_parse > 0)
|
---|
| 3814 | goto cd1;
|
---|
| 3815 | cd0:
|
---|
| 3816 | startrbi = rbi = 0;
|
---|
| 3817 | sleeptime = 0; // how long to pause between commands
|
---|
| 3818 | memset(readbuffer, '\0', BUFSIZ); // clear the read buffer
|
---|
| 3819 | // generate a command by percentages
|
---|
| 3820 | percent = (int) lrand48() % 100; // get a number from 0-99
|
---|
| 3821 | if (percent < Mp) { // Movement commands
|
---|
| 3822 | // available commands
|
---|
| 3823 | cmd = cmd1;
|
---|
| 3824 | M++;
|
---|
| 3825 | } else if (percent < Np) { // non-movement commands
|
---|
| 3826 | cmd = "mz<>\'\""; // available commands
|
---|
| 3827 | N++;
|
---|
| 3828 | } else if (percent < Dp) { // Delete commands
|
---|
| 3829 | cmd = "dx"; // available commands
|
---|
| 3830 | D++;
|
---|
| 3831 | } else if (percent < Ip) { // Inset commands
|
---|
| 3832 | cmd = "iIaAsrJ"; // available commands
|
---|
| 3833 | I++;
|
---|
| 3834 | } else if (percent < Yp) { // Yank commands
|
---|
| 3835 | cmd = "yY"; // available commands
|
---|
| 3836 | Y++;
|
---|
| 3837 | } else if (percent < Pp) { // Put commands
|
---|
| 3838 | cmd = "pP"; // available commands
|
---|
| 3839 | P++;
|
---|
| 3840 | } else {
|
---|
| 3841 | // We do not know how to handle this command, try again
|
---|
| 3842 | U++;
|
---|
| 3843 | goto cd0;
|
---|
| 3844 | }
|
---|
| 3845 | // randomly pick one of the available cmds from "cmd[]"
|
---|
| 3846 | i = (int) lrand48() % strlen(cmd);
|
---|
| 3847 | cm = cmd[i];
|
---|
| 3848 | if (strchr(":\024", cm))
|
---|
| 3849 | goto cd0; // dont allow colon or ctrl-T commands
|
---|
| 3850 | readbuffer[rbi++] = cm; // put cmd into input buffer
|
---|
| 3851 |
|
---|
| 3852 | // now we have the command-
|
---|
| 3853 | // there are 1, 2, and multi char commands
|
---|
| 3854 | // find out which and generate the rest of command as necessary
|
---|
| 3855 | if (strchr("dmryz<>\'\"", cm)) { // 2-char commands
|
---|
| 3856 | cmd1 = " \n\r0$^-+wWeEbBhjklHL";
|
---|
| 3857 | if (cm == 'm' || cm == '\'' || cm == '\"') { // pick a reg[]
|
---|
| 3858 | cmd1 = "abcdefghijklmnopqrstuvwxyz";
|
---|
| 3859 | }
|
---|
| 3860 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command
|
---|
| 3861 | c = cmd1[thing];
|
---|
| 3862 | readbuffer[rbi++] = c; // add movement to input buffer
|
---|
| 3863 | }
|
---|
| 3864 | if (strchr("iIaAsc", cm)) { // multi-char commands
|
---|
| 3865 | if (cm == 'c') {
|
---|
| 3866 | // change some thing
|
---|
| 3867 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command
|
---|
| 3868 | c = cmd1[thing];
|
---|
| 3869 | readbuffer[rbi++] = c; // add movement to input buffer
|
---|
| 3870 | }
|
---|
| 3871 | thing = (int) lrand48() % 4; // what thing to insert
|
---|
| 3872 | cnt = (int) lrand48() % 10; // how many to insert
|
---|
| 3873 | for (i = 0; i < cnt; i++) {
|
---|
| 3874 | if (thing == 0) { // insert chars
|
---|
| 3875 | readbuffer[rbi++] = chars[((int) lrand48() % strlen(chars))];
|
---|
| 3876 | } else if (thing == 1) { // insert words
|
---|
| 3877 | strcat((char *) readbuffer, words[(int) lrand48() % 20]);
|
---|
| 3878 | strcat((char *) readbuffer, " ");
|
---|
| 3879 | sleeptime = 0; // how fast to type
|
---|
| 3880 | } else if (thing == 2) { // insert lines
|
---|
| 3881 | strcat((char *) readbuffer, lines[(int) lrand48() % 20]);
|
---|
| 3882 | sleeptime = 0; // how fast to type
|
---|
| 3883 | } else { // insert multi-lines
|
---|
| 3884 | strcat((char *) readbuffer, multilines[(int) lrand48() % 20]);
|
---|
| 3885 | sleeptime = 0; // how fast to type
|
---|
| 3886 | }
|
---|
| 3887 | }
|
---|
| 3888 | strcat((char *) readbuffer, "\033");
|
---|
| 3889 | }
|
---|
| 3890 | readed_for_parse = strlen(readbuffer);
|
---|
| 3891 | cd1:
|
---|
| 3892 | totalcmds++;
|
---|
| 3893 | if (sleeptime > 0)
|
---|
| 3894 | (void) mysleep(sleeptime); // sleep 1/100 sec
|
---|
| 3895 | }
|
---|
| 3896 |
|
---|
| 3897 | // test to see if there are any errors
|
---|
| 3898 | static void crash_test()
|
---|
| 3899 | {
|
---|
| 3900 | static time_t oldtim;
|
---|
| 3901 | time_t tim;
|
---|
| 3902 | char d[2], msg[BUFSIZ];
|
---|
| 3903 |
|
---|
| 3904 | msg[0] = '\0';
|
---|
| 3905 | if (end < text) {
|
---|
| 3906 | strcat((char *) msg, "end<text ");
|
---|
| 3907 | }
|
---|
| 3908 | if (end > textend) {
|
---|
| 3909 | strcat((char *) msg, "end>textend ");
|
---|
| 3910 | }
|
---|
| 3911 | if (dot < text) {
|
---|
| 3912 | strcat((char *) msg, "dot<text ");
|
---|
| 3913 | }
|
---|
| 3914 | if (dot > end) {
|
---|
| 3915 | strcat((char *) msg, "dot>end ");
|
---|
| 3916 | }
|
---|
| 3917 | if (screenbegin < text) {
|
---|
| 3918 | strcat((char *) msg, "screenbegin<text ");
|
---|
| 3919 | }
|
---|
| 3920 | if (screenbegin > end - 1) {
|
---|
| 3921 | strcat((char *) msg, "screenbegin>end-1 ");
|
---|
| 3922 | }
|
---|
| 3923 |
|
---|
| 3924 | if (strlen(msg) > 0) {
|
---|
| 3925 | alarm(0);
|
---|
| 3926 | printf("\n\n%d: \'%c\' %s\n\n\n%s[Hit return to continue]%s",
|
---|
| 3927 | totalcmds, last_input_char, msg, SOs, SOn);
|
---|
| 3928 | fflush(stdout);
|
---|
| 3929 | while (read(0, d, 1) > 0) {
|
---|
| 3930 | if (d[0] == '\n' || d[0] == '\r')
|
---|
| 3931 | break;
|
---|
| 3932 | }
|
---|
| 3933 | alarm(3);
|
---|
| 3934 | }
|
---|
| 3935 | tim = (time_t) time((time_t *) 0);
|
---|
| 3936 | if (tim >= (oldtim + 3)) {
|
---|
| 3937 | sprintf((char *) status_buffer,
|
---|
| 3938 | "Tot=%d: M=%d N=%d I=%d D=%d Y=%d P=%d U=%d size=%d",
|
---|
| 3939 | totalcmds, M, N, I, D, Y, P, U, end - text + 1);
|
---|
| 3940 | oldtim = tim;
|
---|
| 3941 | }
|
---|
| 3942 | return;
|
---|
| 3943 | }
|
---|
| 3944 | #endif /* CONFIG_FEATURE_VI_CRASHME */
|
---|