[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Termios command line History and Editing.
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| 4 | *
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| 5 | * Copyright (c) 1986-2003 may safely be consumed by a BSD or GPL license.
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| 6 | * Written by: Vladimir Oleynik <dzo@simtreas.ru>
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| 7 | *
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| 8 | * Used ideas:
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| 9 | * Adam Rogoyski <rogoyski@cs.utexas.edu>
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| 10 | * Dave Cinege <dcinege@psychosis.com>
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| 11 | * Jakub Jelinek (c) 1995
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| 12 | * Erik Andersen <andersen@codepoet.org> (Majorly adjusted for busybox)
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| 13 | *
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| 14 | * This code is 'as is' with no warranty.
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| 15 | *
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| 16 | *
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| 17 | */
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| 18 |
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| 19 | /*
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| 20 | Usage and Known bugs:
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| 21 | Terminal key codes are not extensive, and more will probably
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| 22 | need to be added. This version was created on Debian GNU/Linux 2.x.
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| 23 | Delete, Backspace, Home, End, and the arrow keys were tested
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| 24 | to work in an Xterm and console. Ctrl-A also works as Home.
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| 25 | Ctrl-E also works as End.
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| 26 |
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| 27 | Small bugs (simple effect):
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| 28 | - not true viewing if terminal size (x*y symbols) less
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| 29 | size (prompt + editor`s line + 2 symbols)
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| 30 | - not true viewing if length prompt less terminal width
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| 31 | */
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| 32 |
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| 33 |
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| 34 | #include "busybox.h"
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| 35 | #include <stdio.h>
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| 36 | #include <errno.h>
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| 37 | #include <unistd.h>
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| 38 | #include <stdlib.h>
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| 39 | #include <string.h>
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| 40 | #include <sys/ioctl.h>
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| 41 | #include <ctype.h>
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| 42 | #include <signal.h>
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| 43 | #include <limits.h>
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| 44 |
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| 45 | #include "../shell/cmdedit.h"
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| 46 |
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| 47 |
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| 48 | #ifdef CONFIG_LOCALE_SUPPORT
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| 49 | #define Isprint(c) isprint((c))
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| 50 | #else
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| 51 | #define Isprint(c) ( (c) >= ' ' && (c) != ((unsigned char)'\233') )
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| 52 | #endif
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| 53 |
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| 54 | #ifdef TEST
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| 55 |
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| 56 | /* pretect redefined for test */
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| 57 | #undef CONFIG_FEATURE_COMMAND_EDITING
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| 58 | #undef CONFIG_FEATURE_COMMAND_TAB_COMPLETION
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| 59 | #undef CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
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| 60 | #undef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT
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| 61 | #undef CONFIG_FEATURE_CLEAN_UP
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| 62 |
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| 63 | #define CONFIG_FEATURE_COMMAND_EDITING
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| 64 | #define CONFIG_FEATURE_COMMAND_TAB_COMPLETION
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| 65 | #define CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
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| 66 | #define CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT
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| 67 | #define CONFIG_FEATURE_CLEAN_UP
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| 68 |
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| 69 | #endif /* TEST */
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| 70 |
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| 71 | #ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION
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| 72 | #include <dirent.h>
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| 73 | #include <sys/stat.h>
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| 74 | #endif
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| 75 |
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| 76 | #ifdef CONFIG_FEATURE_COMMAND_EDITING
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| 77 |
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| 78 | #if defined(CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION) || defined(CONFIG_FEATURE_SH_FANCY_PROMPT)
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| 79 | #define CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR
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| 80 | #endif
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| 81 |
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| 82 | #ifdef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR
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| 83 | #include "pwd_.h"
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| 84 | #endif /* advanced FEATURES */
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| 85 |
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| 86 |
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| 87 | /* Maximum length of the linked list for the command line history */
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| 88 | #ifndef CONFIG_FEATURE_COMMAND_HISTORY
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| 89 | #define MAX_HISTORY 15
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| 90 | #else
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| 91 | #define MAX_HISTORY CONFIG_FEATURE_COMMAND_HISTORY
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| 92 | #endif
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| 93 |
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| 94 | #if MAX_HISTORY < 1
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| 95 | #warning cmdedit: You set MAX_HISTORY < 1. The history algorithm switched off.
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| 96 | #else
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| 97 | static char *history[MAX_HISTORY+1]; /* history + current */
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| 98 | /* saved history lines */
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| 99 | static int n_history;
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| 100 | /* current pointer to history line */
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| 101 | static int cur_history;
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| 102 | #endif
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| 103 |
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| 104 | #include <termios.h>
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| 105 | #define setTermSettings(fd,argp) tcsetattr(fd,TCSANOW,argp)
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| 106 | #define getTermSettings(fd,argp) tcgetattr(fd, argp);
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| 107 |
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| 108 | /* Current termio and the previous termio before starting sh */
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| 109 | static struct termios initial_settings, new_settings;
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| 110 |
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| 111 |
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| 112 | static
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| 113 | volatile int cmdedit_termw = 80; /* actual terminal width */
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| 114 | static
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| 115 | volatile int handlers_sets = 0; /* Set next bites: */
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| 116 |
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| 117 | enum {
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| 118 | SET_ATEXIT = 1, /* when atexit() has been called
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| 119 | and get euid,uid,gid to fast compare */
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| 120 | SET_WCHG_HANDLERS = 2, /* winchg signal handler */
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| 121 | SET_RESET_TERM = 4, /* if the terminal needs to be reset upon exit */
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| 122 | };
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| 123 |
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| 124 |
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| 125 | static int cmdedit_x; /* real x terminal position */
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| 126 | static int cmdedit_y; /* pseudoreal y terminal position */
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| 127 | static int cmdedit_prmt_len; /* lenght prompt without colores string */
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| 128 |
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| 129 | static int cursor; /* required global for signal handler */
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| 130 | static int len; /* --- "" - - "" - -"- --""-- --""--- */
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| 131 | static char *command_ps; /* --- "" - - "" - -"- --""-- --""--- */
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| 132 | static
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| 133 | #ifndef CONFIG_FEATURE_SH_FANCY_PROMPT
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| 134 | const
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| 135 | #endif
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| 136 | char *cmdedit_prompt; /* --- "" - - "" - -"- --""-- --""--- */
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| 137 |
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| 138 | #ifdef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR
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| 139 | static char *user_buf = "";
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| 140 | static char *home_pwd_buf = "";
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| 141 | static int my_euid;
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| 142 | #endif
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| 143 |
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| 144 | #ifdef CONFIG_FEATURE_SH_FANCY_PROMPT
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| 145 | static char *hostname_buf;
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| 146 | static int num_ok_lines = 1;
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| 147 | #endif
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| 148 |
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| 149 |
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| 150 | #ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION
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| 151 |
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| 152 | #ifndef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR
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| 153 | static int my_euid;
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| 154 | #endif
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| 155 |
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| 156 | static int my_uid;
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| 157 | static int my_gid;
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| 158 |
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| 159 | #endif /* CONFIG_FEATURE_COMMAND_TAB_COMPLETION */
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| 160 |
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| 161 | static void cmdedit_setwidth(int w, int redraw_flg);
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| 162 |
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| 163 | static void win_changed(int nsig)
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| 164 | {
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| 165 | static sighandler_t previous_SIGWINCH_handler; /* for reset */
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| 166 |
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| 167 | /* emulate || signal call */
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| 168 | if (nsig == -SIGWINCH || nsig == SIGWINCH) {
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| 169 | int width = 0;
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| 170 | get_terminal_width_height(0, &width, NULL);
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| 171 | cmdedit_setwidth(width, nsig == SIGWINCH);
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| 172 | }
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| 173 | /* Unix not all standart in recall signal */
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| 174 |
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| 175 | if (nsig == -SIGWINCH) /* save previous handler */
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| 176 | previous_SIGWINCH_handler = signal(SIGWINCH, win_changed);
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| 177 | else if (nsig == SIGWINCH) /* signaled called handler */
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| 178 | signal(SIGWINCH, win_changed); /* set for next call */
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| 179 | else /* nsig == 0 */
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| 180 | /* set previous handler */
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| 181 | signal(SIGWINCH, previous_SIGWINCH_handler); /* reset */
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| 182 | }
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| 183 |
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| 184 | static void cmdedit_reset_term(void)
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| 185 | {
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| 186 | if ((handlers_sets & SET_RESET_TERM) != 0) {
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| 187 | /* sparc and other have broken termios support: use old termio handling. */
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| 188 | setTermSettings(STDIN_FILENO, (void *) &initial_settings);
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| 189 | handlers_sets &= ~SET_RESET_TERM;
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| 190 | }
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| 191 | if ((handlers_sets & SET_WCHG_HANDLERS) != 0) {
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| 192 | /* reset SIGWINCH handler to previous (default) */
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| 193 | win_changed(0);
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| 194 | handlers_sets &= ~SET_WCHG_HANDLERS;
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| 195 | }
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| 196 | fflush(stdout);
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| 197 | }
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| 198 |
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| 199 |
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| 200 | /* special for recount position for scroll and remove terminal margin effect */
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| 201 | static void cmdedit_set_out_char(int next_char)
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| 202 | {
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| 203 |
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| 204 | int c = (int)((unsigned char) command_ps[cursor]);
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| 205 |
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| 206 | if (c == 0)
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| 207 | c = ' '; /* destroy end char? */
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| 208 | #ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT
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| 209 | if (!Isprint(c)) { /* Inverse put non-printable characters */
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| 210 | if (c >= 128)
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| 211 | c -= 128;
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| 212 | if (c < ' ')
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| 213 | c += '@';
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| 214 | if (c == 127)
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| 215 | c = '?';
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| 216 | printf("\033[7m%c\033[0m", c);
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| 217 | } else
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| 218 | #endif
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| 219 | putchar(c);
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| 220 | if (++cmdedit_x >= cmdedit_termw) {
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| 221 | /* terminal is scrolled down */
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| 222 | cmdedit_y++;
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| 223 | cmdedit_x = 0;
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| 224 |
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| 225 | if (!next_char)
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| 226 | next_char = ' ';
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| 227 | /* destroy "(auto)margin" */
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| 228 | putchar(next_char);
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| 229 | putchar('\b');
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| 230 | }
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| 231 | cursor++;
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| 232 | }
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| 233 |
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| 234 | /* Move to end line. Bonus: rewrite line from cursor */
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| 235 | static void input_end(void)
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| 236 | {
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| 237 | while (cursor < len)
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| 238 | cmdedit_set_out_char(0);
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| 239 | }
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| 240 |
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| 241 | /* Go to the next line */
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| 242 | static void goto_new_line(void)
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| 243 | {
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| 244 | input_end();
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| 245 | if (cmdedit_x)
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| 246 | putchar('\n');
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| 247 | }
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| 248 |
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| 249 |
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| 250 | static inline void out1str(const char *s)
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| 251 | {
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| 252 | if ( s )
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| 253 | fputs(s, stdout);
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| 254 | }
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| 255 |
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| 256 | static inline void beep(void)
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| 257 | {
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| 258 | putchar('\007');
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| 259 | }
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| 260 |
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| 261 | /* Move back one character */
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| 262 | /* special for slow terminal */
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| 263 | static void input_backward(int num)
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| 264 | {
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| 265 | if (num > cursor)
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| 266 | num = cursor;
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| 267 | cursor -= num; /* new cursor (in command, not terminal) */
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| 268 |
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| 269 | if (cmdedit_x >= num) { /* no to up line */
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| 270 | cmdedit_x -= num;
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| 271 | if (num < 4)
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| 272 | while (num-- > 0)
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| 273 | putchar('\b');
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| 274 |
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| 275 | else
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| 276 | printf("\033[%dD", num);
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| 277 | } else {
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| 278 | int count_y;
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| 279 |
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| 280 | if (cmdedit_x) {
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| 281 | putchar('\r'); /* back to first terminal pos. */
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| 282 | num -= cmdedit_x; /* set previous backward */
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| 283 | }
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| 284 | count_y = 1 + num / cmdedit_termw;
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| 285 | printf("\033[%dA", count_y);
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| 286 | cmdedit_y -= count_y;
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| 287 | /* require forward after uping */
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| 288 | cmdedit_x = cmdedit_termw * count_y - num;
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| 289 | printf("\033[%dC", cmdedit_x); /* set term cursor */
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| 290 | }
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| 291 | }
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| 292 |
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| 293 | static void put_prompt(void)
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| 294 | {
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| 295 | out1str(cmdedit_prompt);
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| 296 | cmdedit_x = cmdedit_prmt_len; /* count real x terminal position */
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| 297 | cursor = 0;
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| 298 | cmdedit_y = 0; /* new quasireal y */
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| 299 | }
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| 300 |
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| 301 | #ifndef CONFIG_FEATURE_SH_FANCY_PROMPT
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| 302 | static void parse_prompt(const char *prmt_ptr)
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| 303 | {
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| 304 | cmdedit_prompt = prmt_ptr;
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| 305 | cmdedit_prmt_len = strlen(prmt_ptr);
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| 306 | put_prompt();
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| 307 | }
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| 308 | #else
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| 309 | static void parse_prompt(const char *prmt_ptr)
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| 310 | {
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| 311 | int prmt_len = 0;
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| 312 | size_t cur_prmt_len = 0;
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| 313 | char flg_not_length = '[';
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| 314 | char *prmt_mem_ptr = xcalloc(1, 1);
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| 315 | char *pwd_buf = xgetcwd(0);
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| 316 | char buf2[PATH_MAX + 1];
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| 317 | char buf[2];
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| 318 | char c;
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| 319 | char *pbuf;
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| 320 |
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| 321 | if (!pwd_buf) {
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| 322 | pwd_buf=(char *)bb_msg_unknown;
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| 323 | }
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| 324 |
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| 325 | while (*prmt_ptr) {
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| 326 | pbuf = buf;
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| 327 | pbuf[1] = 0;
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| 328 | c = *prmt_ptr++;
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| 329 | if (c == '\\') {
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| 330 | const char *cp = prmt_ptr;
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| 331 | int l;
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| 332 |
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| 333 | c = bb_process_escape_sequence(&prmt_ptr);
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| 334 | if(prmt_ptr==cp) {
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| 335 | if (*cp == 0)
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| 336 | break;
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| 337 | c = *prmt_ptr++;
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| 338 | switch (c) {
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| 339 | #ifdef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR
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| 340 | case 'u':
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| 341 | pbuf = user_buf;
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| 342 | break;
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| 343 | #endif
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| 344 | case 'h':
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| 345 | pbuf = hostname_buf;
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| 346 | if (pbuf == 0) {
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| 347 | pbuf = xcalloc(256, 1);
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| 348 | if (gethostname(pbuf, 255) < 0) {
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| 349 | strcpy(pbuf, "?");
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| 350 | } else {
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| 351 | char *s = strchr(pbuf, '.');
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| 352 |
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| 353 | if (s)
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| 354 | *s = 0;
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| 355 | }
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| 356 | hostname_buf = pbuf;
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| 357 | }
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| 358 | break;
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| 359 | case '$':
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| 360 | c = my_euid == 0 ? '#' : '$';
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| 361 | break;
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| 362 | #ifdef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR
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| 363 | case 'w':
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| 364 | pbuf = pwd_buf;
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| 365 | l = strlen(home_pwd_buf);
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| 366 | if (home_pwd_buf[0] != 0 &&
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| 367 | strncmp(home_pwd_buf, pbuf, l) == 0 &&
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| 368 | (pbuf[l]=='/' || pbuf[l]=='\0') &&
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| 369 | strlen(pwd_buf+l)<PATH_MAX) {
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| 370 | pbuf = buf2;
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| 371 | *pbuf = '~';
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| 372 | strcpy(pbuf+1, pwd_buf+l);
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| 373 | }
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| 374 | break;
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| 375 | #endif
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| 376 | case 'W':
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| 377 | pbuf = pwd_buf;
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| 378 | cp = strrchr(pbuf,'/');
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| 379 | if ( (cp != NULL) && (cp != pbuf) )
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| 380 | pbuf += (cp-pbuf)+1;
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| 381 | break;
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| 382 | case '!':
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| 383 | snprintf(pbuf = buf2, sizeof(buf2), "%d", num_ok_lines);
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| 384 | break;
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| 385 | case 'e': case 'E': /* \e \E = \033 */
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| 386 | c = '\033';
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| 387 | break;
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| 388 | case 'x': case 'X':
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| 389 | for (l = 0; l < 3;) {
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| 390 | int h;
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| 391 | buf2[l++] = *prmt_ptr;
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| 392 | buf2[l] = 0;
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| 393 | h = strtol(buf2, &pbuf, 16);
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| 394 | if (h > UCHAR_MAX || (pbuf - buf2) < l) {
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| 395 | l--;
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| 396 | break;
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| 397 | }
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| 398 | prmt_ptr++;
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| 399 | }
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| 400 | buf2[l] = 0;
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| 401 | c = (char)strtol(buf2, 0, 16);
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| 402 | if(c==0)
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| 403 | c = '?';
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| 404 | pbuf = buf;
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| 405 | break;
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| 406 | case '[': case ']':
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| 407 | if (c == flg_not_length) {
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| 408 | flg_not_length = flg_not_length == '[' ? ']' : '[';
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| 409 | continue;
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| 410 | }
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| 411 | break;
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| 412 | }
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| 413 | }
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| 414 | }
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| 415 | if(pbuf == buf)
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| 416 | *pbuf = c;
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| 417 | cur_prmt_len = strlen(pbuf);
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| 418 | prmt_len += cur_prmt_len;
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| 419 | if (flg_not_length != ']')
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| 420 | cmdedit_prmt_len += cur_prmt_len;
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| 421 | prmt_mem_ptr = strcat(xrealloc(prmt_mem_ptr, prmt_len+1), pbuf);
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| 422 | }
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| 423 | if(pwd_buf!=(char *)bb_msg_unknown)
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| 424 | free(pwd_buf);
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| 425 | cmdedit_prompt = prmt_mem_ptr;
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| 426 | put_prompt();
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| 427 | }
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| 428 | #endif
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| 429 |
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| 430 |
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| 431 | /* draw prompt, editor line, and clear tail */
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| 432 | static void redraw(int y, int back_cursor)
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| 433 | {
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| 434 | if (y > 0) /* up to start y */
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| 435 | printf("\033[%dA", y);
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| 436 | putchar('\r');
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| 437 | put_prompt();
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| 438 | input_end(); /* rewrite */
|
---|
| 439 | printf("\033[J"); /* destroy tail after cursor */
|
---|
| 440 | input_backward(back_cursor);
|
---|
| 441 | }
|
---|
| 442 |
|
---|
| 443 | #ifdef CONFIG_FEATURE_COMMAND_EDITING_VI
|
---|
| 444 | #define DELBUFSIZ 128
|
---|
| 445 | static char *delbuf; /* a (malloced) place to store deleted characters */
|
---|
| 446 | static char *delp;
|
---|
| 447 | static char newdelflag; /* whether delbuf should be reused yet */
|
---|
| 448 | #endif
|
---|
| 449 |
|
---|
| 450 | /* Delete the char in front of the cursor, optionally saving it
|
---|
| 451 | * for later putback */
|
---|
| 452 | static void input_delete(int save)
|
---|
| 453 | {
|
---|
| 454 | int j = cursor;
|
---|
| 455 |
|
---|
| 456 | if (j == len)
|
---|
| 457 | return;
|
---|
| 458 |
|
---|
| 459 | #ifdef CONFIG_FEATURE_COMMAND_EDITING_VI
|
---|
| 460 | if (save) {
|
---|
| 461 | if (newdelflag) {
|
---|
| 462 | if (!delbuf)
|
---|
| 463 | delbuf = malloc(DELBUFSIZ);
|
---|
| 464 | /* safe if malloc fails */
|
---|
| 465 | delp = delbuf;
|
---|
| 466 | newdelflag = 0;
|
---|
| 467 | }
|
---|
| 468 | if (delbuf && (delp - delbuf < DELBUFSIZ))
|
---|
| 469 | *delp++ = command_ps[j];
|
---|
| 470 | }
|
---|
| 471 | #endif
|
---|
| 472 |
|
---|
| 473 | strcpy(command_ps + j, command_ps + j + 1);
|
---|
| 474 | len--;
|
---|
| 475 | input_end(); /* rewrite new line */
|
---|
| 476 | cmdedit_set_out_char(0); /* destroy end char */
|
---|
| 477 | input_backward(cursor - j); /* back to old pos cursor */
|
---|
| 478 | }
|
---|
| 479 |
|
---|
| 480 | #ifdef CONFIG_FEATURE_COMMAND_EDITING_VI
|
---|
| 481 | static void put(void)
|
---|
| 482 | {
|
---|
| 483 | int ocursor, j = delp - delbuf;
|
---|
| 484 | if (j == 0)
|
---|
| 485 | return;
|
---|
| 486 | ocursor = cursor;
|
---|
| 487 | /* open hole and then fill it */
|
---|
| 488 | memmove(command_ps + cursor + j, command_ps + cursor, len - cursor + 1);
|
---|
| 489 | strncpy(command_ps + cursor, delbuf, j);
|
---|
| 490 | len += j;
|
---|
| 491 | input_end(); /* rewrite new line */
|
---|
| 492 | input_backward(cursor-ocursor-j+1); /* at end of new text */
|
---|
| 493 | }
|
---|
| 494 | #endif
|
---|
| 495 |
|
---|
| 496 | /* Delete the char in back of the cursor */
|
---|
| 497 | static void input_backspace(void)
|
---|
| 498 | {
|
---|
| 499 | if (cursor > 0) {
|
---|
| 500 | input_backward(1);
|
---|
| 501 | input_delete(0);
|
---|
| 502 | }
|
---|
| 503 | }
|
---|
| 504 |
|
---|
| 505 |
|
---|
| 506 | /* Move forward one character */
|
---|
| 507 | static void input_forward(void)
|
---|
| 508 | {
|
---|
| 509 | if (cursor < len)
|
---|
| 510 | cmdedit_set_out_char(command_ps[cursor + 1]);
|
---|
| 511 | }
|
---|
| 512 |
|
---|
| 513 | static void cmdedit_setwidth(int w, int redraw_flg)
|
---|
| 514 | {
|
---|
| 515 | cmdedit_termw = cmdedit_prmt_len + 2;
|
---|
| 516 | if (w <= cmdedit_termw) {
|
---|
| 517 | cmdedit_termw = cmdedit_termw % w;
|
---|
| 518 | }
|
---|
| 519 | if (w > cmdedit_termw) {
|
---|
| 520 | cmdedit_termw = w;
|
---|
| 521 |
|
---|
| 522 | if (redraw_flg) {
|
---|
| 523 | /* new y for current cursor */
|
---|
| 524 | int new_y = (cursor + cmdedit_prmt_len) / w;
|
---|
| 525 |
|
---|
| 526 | /* redraw */
|
---|
| 527 | redraw((new_y >= cmdedit_y ? new_y : cmdedit_y), len - cursor);
|
---|
| 528 | fflush(stdout);
|
---|
| 529 | }
|
---|
| 530 | }
|
---|
| 531 | }
|
---|
| 532 |
|
---|
| 533 | static void cmdedit_init(void)
|
---|
| 534 | {
|
---|
| 535 | cmdedit_prmt_len = 0;
|
---|
| 536 | if ((handlers_sets & SET_WCHG_HANDLERS) == 0) {
|
---|
| 537 | /* emulate usage handler to set handler and call yours work */
|
---|
| 538 | win_changed(-SIGWINCH);
|
---|
| 539 | handlers_sets |= SET_WCHG_HANDLERS;
|
---|
| 540 | }
|
---|
| 541 |
|
---|
| 542 | if ((handlers_sets & SET_ATEXIT) == 0) {
|
---|
| 543 | #ifdef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR
|
---|
| 544 | struct passwd *entry;
|
---|
| 545 |
|
---|
| 546 | my_euid = geteuid();
|
---|
| 547 | entry = getpwuid(my_euid);
|
---|
| 548 | if (entry) {
|
---|
| 549 | user_buf = bb_xstrdup(entry->pw_name);
|
---|
| 550 | home_pwd_buf = bb_xstrdup(entry->pw_dir);
|
---|
| 551 | }
|
---|
| 552 | #endif
|
---|
| 553 |
|
---|
| 554 | #ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION
|
---|
| 555 |
|
---|
| 556 | #ifndef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR
|
---|
| 557 | my_euid = geteuid();
|
---|
| 558 | #endif
|
---|
| 559 | my_uid = getuid();
|
---|
| 560 | my_gid = getgid();
|
---|
| 561 | #endif /* CONFIG_FEATURE_COMMAND_TAB_COMPLETION */
|
---|
| 562 | handlers_sets |= SET_ATEXIT;
|
---|
| 563 | atexit(cmdedit_reset_term); /* be sure to do this only once */
|
---|
| 564 | }
|
---|
| 565 | }
|
---|
| 566 |
|
---|
| 567 | #ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION
|
---|
| 568 |
|
---|
| 569 | static char **matches;
|
---|
| 570 | static int num_matches;
|
---|
| 571 | static char *add_char_to_match;
|
---|
| 572 |
|
---|
| 573 | static void add_match(char *matched, int add_char)
|
---|
| 574 | {
|
---|
| 575 | int nm = num_matches;
|
---|
| 576 | int nm1 = nm + 1;
|
---|
| 577 |
|
---|
| 578 | matches = xrealloc(matches, nm1 * sizeof(char *));
|
---|
| 579 | add_char_to_match = xrealloc(add_char_to_match, nm1);
|
---|
| 580 | matches[nm] = matched;
|
---|
| 581 | add_char_to_match[nm] = (char)add_char;
|
---|
| 582 | num_matches++;
|
---|
| 583 | }
|
---|
| 584 |
|
---|
| 585 | static int is_execute(const struct stat *st)
|
---|
| 586 | {
|
---|
| 587 | if ((!my_euid && (st->st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))) ||
|
---|
| 588 | (my_uid == st->st_uid && (st->st_mode & S_IXUSR)) ||
|
---|
| 589 | (my_gid == st->st_gid && (st->st_mode & S_IXGRP)) ||
|
---|
| 590 | (st->st_mode & S_IXOTH)) return TRUE;
|
---|
| 591 | return FALSE;
|
---|
| 592 | }
|
---|
| 593 |
|
---|
| 594 | #ifdef CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
|
---|
| 595 |
|
---|
| 596 | static void username_tab_completion(char *ud, char *with_shash_flg)
|
---|
| 597 | {
|
---|
| 598 | struct passwd *entry;
|
---|
| 599 | int userlen;
|
---|
| 600 |
|
---|
| 601 | ud++; /* ~user/... to user/... */
|
---|
| 602 | userlen = strlen(ud);
|
---|
| 603 |
|
---|
| 604 | if (with_shash_flg) { /* "~/..." or "~user/..." */
|
---|
| 605 | char *sav_ud = ud - 1;
|
---|
| 606 | char *home = 0;
|
---|
| 607 | char *temp;
|
---|
| 608 |
|
---|
| 609 | if (*ud == '/') { /* "~/..." */
|
---|
| 610 | home = home_pwd_buf;
|
---|
| 611 | } else {
|
---|
| 612 | /* "~user/..." */
|
---|
| 613 | temp = strchr(ud, '/');
|
---|
| 614 | *temp = 0; /* ~user\0 */
|
---|
| 615 | entry = getpwnam(ud);
|
---|
| 616 | *temp = '/'; /* restore ~user/... */
|
---|
| 617 | ud = temp;
|
---|
| 618 | if (entry)
|
---|
| 619 | home = entry->pw_dir;
|
---|
| 620 | }
|
---|
| 621 | if (home) {
|
---|
| 622 | if ((userlen + strlen(home) + 1) < BUFSIZ) {
|
---|
| 623 | char temp2[BUFSIZ]; /* argument size */
|
---|
| 624 |
|
---|
| 625 | /* /home/user/... */
|
---|
| 626 | sprintf(temp2, "%s%s", home, ud);
|
---|
| 627 | strcpy(sav_ud, temp2);
|
---|
| 628 | }
|
---|
| 629 | }
|
---|
| 630 | } else {
|
---|
| 631 | /* "~[^/]*" */
|
---|
| 632 | setpwent();
|
---|
| 633 |
|
---|
| 634 | while ((entry = getpwent()) != NULL) {
|
---|
| 635 | /* Null usernames should result in all users as possible completions. */
|
---|
| 636 | if ( /*!userlen || */ !strncmp(ud, entry->pw_name, userlen)) {
|
---|
| 637 | add_match(bb_xasprintf("~%s", entry->pw_name), '/');
|
---|
| 638 | }
|
---|
| 639 | }
|
---|
| 640 |
|
---|
| 641 | endpwent();
|
---|
| 642 | }
|
---|
| 643 | }
|
---|
| 644 | #endif /* CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION */
|
---|
| 645 |
|
---|
| 646 | enum {
|
---|
| 647 | FIND_EXE_ONLY = 0,
|
---|
| 648 | FIND_DIR_ONLY = 1,
|
---|
| 649 | FIND_FILE_ONLY = 2,
|
---|
| 650 | };
|
---|
| 651 |
|
---|
| 652 | #ifdef CONFIG_ASH
|
---|
| 653 | const char *cmdedit_path_lookup;
|
---|
| 654 | #else
|
---|
| 655 | #define cmdedit_path_lookup getenv("PATH")
|
---|
| 656 | #endif
|
---|
| 657 |
|
---|
| 658 | static int path_parse(char ***p, int flags)
|
---|
| 659 | {
|
---|
| 660 | int npth;
|
---|
| 661 | const char *tmp;
|
---|
| 662 | const char *pth;
|
---|
| 663 |
|
---|
| 664 | /* if not setenv PATH variable, to search cur dir "." */
|
---|
| 665 | if (flags != FIND_EXE_ONLY || (pth = cmdedit_path_lookup) == 0 ||
|
---|
| 666 | /* PATH=<empty> or PATH=:<empty> */
|
---|
| 667 | *pth == 0 || (*pth == ':' && *(pth + 1) == 0)) {
|
---|
| 668 | return 1;
|
---|
| 669 | }
|
---|
| 670 |
|
---|
| 671 | tmp = pth;
|
---|
| 672 | npth = 0;
|
---|
| 673 |
|
---|
| 674 | for (;;) {
|
---|
| 675 | npth++; /* count words is + 1 count ':' */
|
---|
| 676 | tmp = strchr(tmp, ':');
|
---|
| 677 | if (tmp) {
|
---|
| 678 | if (*++tmp == 0)
|
---|
| 679 | break; /* :<empty> */
|
---|
| 680 | } else
|
---|
| 681 | break;
|
---|
| 682 | }
|
---|
| 683 |
|
---|
| 684 | *p = xmalloc(npth * sizeof(char *));
|
---|
| 685 |
|
---|
| 686 | tmp = pth;
|
---|
| 687 | (*p)[0] = bb_xstrdup(tmp);
|
---|
| 688 | npth = 1; /* count words is + 1 count ':' */
|
---|
| 689 |
|
---|
| 690 | for (;;) {
|
---|
| 691 | tmp = strchr(tmp, ':');
|
---|
| 692 | if (tmp) {
|
---|
| 693 | (*p)[0][(tmp - pth)] = 0; /* ':' -> '\0' */
|
---|
| 694 | if (*++tmp == 0)
|
---|
| 695 | break; /* :<empty> */
|
---|
| 696 | } else
|
---|
| 697 | break;
|
---|
| 698 | (*p)[npth++] = &(*p)[0][(tmp - pth)]; /* p[next]=p[0][&'\0'+1] */
|
---|
| 699 | }
|
---|
| 700 |
|
---|
| 701 | return npth;
|
---|
| 702 | }
|
---|
| 703 |
|
---|
| 704 | static char *add_quote_for_spec_chars(char *found, int add)
|
---|
| 705 | {
|
---|
| 706 | int l = 0;
|
---|
| 707 | char *s = xmalloc((strlen(found) + 1) * 2);
|
---|
| 708 |
|
---|
| 709 | while (*found) {
|
---|
| 710 | if (strchr(" `\"#$%^&*()=+{}[]:;\'|\\<>", *found))
|
---|
| 711 | s[l++] = '\\';
|
---|
| 712 | s[l++] = *found++;
|
---|
| 713 | }
|
---|
| 714 | if(add)
|
---|
| 715 | s[l++] = (char)add;
|
---|
| 716 | s[l] = 0;
|
---|
| 717 | return s;
|
---|
| 718 | }
|
---|
| 719 |
|
---|
| 720 | static void exe_n_cwd_tab_completion(char *command, int type)
|
---|
| 721 | {
|
---|
| 722 | DIR *dir;
|
---|
| 723 | struct dirent *next;
|
---|
| 724 | char dirbuf[BUFSIZ];
|
---|
| 725 | struct stat st;
|
---|
| 726 | char *path1[1];
|
---|
| 727 | char **paths = path1;
|
---|
| 728 | int npaths;
|
---|
| 729 | int i;
|
---|
| 730 | char *found;
|
---|
| 731 | char *pfind = strrchr(command, '/');
|
---|
| 732 |
|
---|
| 733 | path1[0] = ".";
|
---|
| 734 |
|
---|
| 735 | if (pfind == NULL) {
|
---|
| 736 | /* no dir, if flags==EXE_ONLY - get paths, else "." */
|
---|
| 737 | npaths = path_parse(&paths, type);
|
---|
| 738 | pfind = command;
|
---|
| 739 | } else {
|
---|
| 740 | /* with dir */
|
---|
| 741 | /* save for change */
|
---|
| 742 | strcpy(dirbuf, command);
|
---|
| 743 | /* set dir only */
|
---|
| 744 | dirbuf[(pfind - command) + 1] = 0;
|
---|
| 745 | #ifdef CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
|
---|
| 746 | if (dirbuf[0] == '~') /* ~/... or ~user/... */
|
---|
| 747 | username_tab_completion(dirbuf, dirbuf);
|
---|
| 748 | #endif
|
---|
| 749 | /* "strip" dirname in command */
|
---|
| 750 | pfind++;
|
---|
| 751 |
|
---|
| 752 | paths[0] = dirbuf;
|
---|
| 753 | npaths = 1; /* only 1 dir */
|
---|
| 754 | }
|
---|
| 755 |
|
---|
| 756 | for (i = 0; i < npaths; i++) {
|
---|
| 757 |
|
---|
| 758 | dir = opendir(paths[i]);
|
---|
| 759 | if (!dir) /* Don't print an error */
|
---|
| 760 | continue;
|
---|
| 761 |
|
---|
| 762 | while ((next = readdir(dir)) != NULL) {
|
---|
| 763 | char *str_found = next->d_name;
|
---|
| 764 | int add_chr = 0;
|
---|
| 765 |
|
---|
| 766 | /* matched ? */
|
---|
| 767 | if (strncmp(str_found, pfind, strlen(pfind)))
|
---|
| 768 | continue;
|
---|
| 769 | /* not see .name without .match */
|
---|
| 770 | if (*str_found == '.' && *pfind == 0) {
|
---|
| 771 | if (*paths[i] == '/' && paths[i][1] == 0
|
---|
| 772 | && str_found[1] == 0) str_found = ""; /* only "/" */
|
---|
| 773 | else
|
---|
| 774 | continue;
|
---|
| 775 | }
|
---|
| 776 | found = concat_path_file(paths[i], str_found);
|
---|
| 777 | /* hmm, remover in progress? */
|
---|
| 778 | if (stat(found, &st) < 0)
|
---|
| 779 | goto cont;
|
---|
| 780 | /* find with dirs ? */
|
---|
| 781 | if (paths[i] != dirbuf)
|
---|
| 782 | strcpy(found, next->d_name); /* only name */
|
---|
| 783 | if (S_ISDIR(st.st_mode)) {
|
---|
| 784 | /* name is directory */
|
---|
| 785 | char *e = found + strlen(found) - 1;
|
---|
| 786 |
|
---|
| 787 | add_chr = '/';
|
---|
| 788 | if(*e == '/')
|
---|
| 789 | *e = '\0';
|
---|
| 790 | } else {
|
---|
| 791 | /* not put found file if search only dirs for cd */
|
---|
| 792 | if (type == FIND_DIR_ONLY)
|
---|
| 793 | goto cont;
|
---|
| 794 | if (type == FIND_FILE_ONLY ||
|
---|
| 795 | (type == FIND_EXE_ONLY && is_execute(&st)))
|
---|
| 796 | add_chr = ' ';
|
---|
| 797 | }
|
---|
| 798 | /* Add it to the list */
|
---|
| 799 | add_match(found, add_chr);
|
---|
| 800 | continue;
|
---|
| 801 | cont:
|
---|
| 802 | free(found);
|
---|
| 803 | }
|
---|
| 804 | closedir(dir);
|
---|
| 805 | }
|
---|
| 806 | if (paths != path1) {
|
---|
| 807 | free(paths[0]); /* allocated memory only in first member */
|
---|
| 808 | free(paths);
|
---|
| 809 | }
|
---|
| 810 | }
|
---|
| 811 |
|
---|
| 812 |
|
---|
| 813 | #define QUOT (UCHAR_MAX+1)
|
---|
| 814 |
|
---|
| 815 | #define collapse_pos(is, in) { \
|
---|
| 816 | memmove(int_buf+(is), int_buf+(in), (BUFSIZ+1-(is)-(in))*sizeof(int)); \
|
---|
| 817 | memmove(pos_buf+(is), pos_buf+(in), (BUFSIZ+1-(is)-(in))*sizeof(int)); }
|
---|
| 818 |
|
---|
| 819 | static int find_match(char *matchBuf, int *len_with_quotes)
|
---|
| 820 | {
|
---|
| 821 | int i, j;
|
---|
| 822 | int command_mode;
|
---|
| 823 | int c, c2;
|
---|
| 824 | int int_buf[BUFSIZ + 1];
|
---|
| 825 | int pos_buf[BUFSIZ + 1];
|
---|
| 826 |
|
---|
| 827 | /* set to integer dimension characters and own positions */
|
---|
| 828 | for (i = 0;; i++) {
|
---|
| 829 | int_buf[i] = (int) ((unsigned char) matchBuf[i]);
|
---|
| 830 | if (int_buf[i] == 0) {
|
---|
| 831 | pos_buf[i] = -1; /* indicator end line */
|
---|
| 832 | break;
|
---|
| 833 | } else
|
---|
| 834 | pos_buf[i] = i;
|
---|
| 835 | }
|
---|
| 836 |
|
---|
| 837 | /* mask \+symbol and convert '\t' to ' ' */
|
---|
| 838 | for (i = j = 0; matchBuf[i]; i++, j++)
|
---|
| 839 | if (matchBuf[i] == '\\') {
|
---|
| 840 | collapse_pos(j, j + 1);
|
---|
| 841 | int_buf[j] |= QUOT;
|
---|
| 842 | i++;
|
---|
| 843 | #ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT
|
---|
| 844 | if (matchBuf[i] == '\t') /* algorithm equivalent */
|
---|
| 845 | int_buf[j] = ' ' | QUOT;
|
---|
| 846 | #endif
|
---|
| 847 | }
|
---|
| 848 | #ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT
|
---|
| 849 | else if (matchBuf[i] == '\t')
|
---|
| 850 | int_buf[j] = ' ';
|
---|
| 851 | #endif
|
---|
| 852 |
|
---|
| 853 | /* mask "symbols" or 'symbols' */
|
---|
| 854 | c2 = 0;
|
---|
| 855 | for (i = 0; int_buf[i]; i++) {
|
---|
| 856 | c = int_buf[i];
|
---|
| 857 | if (c == '\'' || c == '"') {
|
---|
| 858 | if (c2 == 0)
|
---|
| 859 | c2 = c;
|
---|
| 860 | else {
|
---|
| 861 | if (c == c2)
|
---|
| 862 | c2 = 0;
|
---|
| 863 | else
|
---|
| 864 | int_buf[i] |= QUOT;
|
---|
| 865 | }
|
---|
| 866 | } else if (c2 != 0 && c != '$')
|
---|
| 867 | int_buf[i] |= QUOT;
|
---|
| 868 | }
|
---|
| 869 |
|
---|
| 870 | /* skip commands with arguments if line have commands delimiters */
|
---|
| 871 | /* ';' ';;' '&' '|' '&&' '||' but `>&' `<&' `>|' */
|
---|
| 872 | for (i = 0; int_buf[i]; i++) {
|
---|
| 873 | c = int_buf[i];
|
---|
| 874 | c2 = int_buf[i + 1];
|
---|
| 875 | j = i ? int_buf[i - 1] : -1;
|
---|
| 876 | command_mode = 0;
|
---|
| 877 | if (c == ';' || c == '&' || c == '|') {
|
---|
| 878 | command_mode = 1 + (c == c2);
|
---|
| 879 | if (c == '&') {
|
---|
| 880 | if (j == '>' || j == '<')
|
---|
| 881 | command_mode = 0;
|
---|
| 882 | } else if (c == '|' && j == '>')
|
---|
| 883 | command_mode = 0;
|
---|
| 884 | }
|
---|
| 885 | if (command_mode) {
|
---|
| 886 | collapse_pos(0, i + command_mode);
|
---|
| 887 | i = -1; /* hack incremet */
|
---|
| 888 | }
|
---|
| 889 | }
|
---|
| 890 | /* collapse `command...` */
|
---|
| 891 | for (i = 0; int_buf[i]; i++)
|
---|
| 892 | if (int_buf[i] == '`') {
|
---|
| 893 | for (j = i + 1; int_buf[j]; j++)
|
---|
| 894 | if (int_buf[j] == '`') {
|
---|
| 895 | collapse_pos(i, j + 1);
|
---|
| 896 | j = 0;
|
---|
| 897 | break;
|
---|
| 898 | }
|
---|
| 899 | if (j) {
|
---|
| 900 | /* not found close ` - command mode, collapse all previous */
|
---|
| 901 | collapse_pos(0, i + 1);
|
---|
| 902 | break;
|
---|
| 903 | } else
|
---|
| 904 | i--; /* hack incremet */
|
---|
| 905 | }
|
---|
| 906 |
|
---|
| 907 | /* collapse (command...(command...)...) or {command...{command...}...} */
|
---|
| 908 | c = 0; /* "recursive" level */
|
---|
| 909 | c2 = 0;
|
---|
| 910 | for (i = 0; int_buf[i]; i++)
|
---|
| 911 | if (int_buf[i] == '(' || int_buf[i] == '{') {
|
---|
| 912 | if (int_buf[i] == '(')
|
---|
| 913 | c++;
|
---|
| 914 | else
|
---|
| 915 | c2++;
|
---|
| 916 | collapse_pos(0, i + 1);
|
---|
| 917 | i = -1; /* hack incremet */
|
---|
| 918 | }
|
---|
| 919 | for (i = 0; pos_buf[i] >= 0 && (c > 0 || c2 > 0); i++)
|
---|
| 920 | if ((int_buf[i] == ')' && c > 0) || (int_buf[i] == '}' && c2 > 0)) {
|
---|
| 921 | if (int_buf[i] == ')')
|
---|
| 922 | c--;
|
---|
| 923 | else
|
---|
| 924 | c2--;
|
---|
| 925 | collapse_pos(0, i + 1);
|
---|
| 926 | i = -1; /* hack incremet */
|
---|
| 927 | }
|
---|
| 928 |
|
---|
| 929 | /* skip first not quote space */
|
---|
| 930 | for (i = 0; int_buf[i]; i++)
|
---|
| 931 | if (int_buf[i] != ' ')
|
---|
| 932 | break;
|
---|
| 933 | if (i)
|
---|
| 934 | collapse_pos(0, i);
|
---|
| 935 |
|
---|
| 936 | /* set find mode for completion */
|
---|
| 937 | command_mode = FIND_EXE_ONLY;
|
---|
| 938 | for (i = 0; int_buf[i]; i++)
|
---|
| 939 | if (int_buf[i] == ' ' || int_buf[i] == '<' || int_buf[i] == '>') {
|
---|
| 940 | if (int_buf[i] == ' ' && command_mode == FIND_EXE_ONLY
|
---|
| 941 | && matchBuf[pos_buf[0]]=='c'
|
---|
| 942 | && matchBuf[pos_buf[1]]=='d' )
|
---|
| 943 | command_mode = FIND_DIR_ONLY;
|
---|
| 944 | else {
|
---|
| 945 | command_mode = FIND_FILE_ONLY;
|
---|
| 946 | break;
|
---|
| 947 | }
|
---|
| 948 | }
|
---|
| 949 | /* "strlen" */
|
---|
| 950 | for (i = 0; int_buf[i]; i++);
|
---|
| 951 | /* find last word */
|
---|
| 952 | for (--i; i >= 0; i--) {
|
---|
| 953 | c = int_buf[i];
|
---|
| 954 | if (c == ' ' || c == '<' || c == '>' || c == '|' || c == '&') {
|
---|
| 955 | collapse_pos(0, i + 1);
|
---|
| 956 | break;
|
---|
| 957 | }
|
---|
| 958 | }
|
---|
| 959 | /* skip first not quoted '\'' or '"' */
|
---|
| 960 | for (i = 0; int_buf[i] == '\'' || int_buf[i] == '"'; i++);
|
---|
| 961 | /* collapse quote or unquote // or /~ */
|
---|
| 962 | while ((int_buf[i] & ~QUOT) == '/' &&
|
---|
| 963 | ((int_buf[i + 1] & ~QUOT) == '/'
|
---|
| 964 | || (int_buf[i + 1] & ~QUOT) == '~')) {
|
---|
| 965 | i++;
|
---|
| 966 | }
|
---|
| 967 |
|
---|
| 968 | /* set only match and destroy quotes */
|
---|
| 969 | j = 0;
|
---|
| 970 | for (c = 0; pos_buf[i] >= 0; i++) {
|
---|
| 971 | matchBuf[c++] = matchBuf[pos_buf[i]];
|
---|
| 972 | j = pos_buf[i] + 1;
|
---|
| 973 | }
|
---|
| 974 | matchBuf[c] = 0;
|
---|
| 975 | /* old lenght matchBuf with quotes symbols */
|
---|
| 976 | *len_with_quotes = j ? j - pos_buf[0] : 0;
|
---|
| 977 |
|
---|
| 978 | return command_mode;
|
---|
| 979 | }
|
---|
| 980 |
|
---|
| 981 | /*
|
---|
| 982 | display by column original ideas from ls applet,
|
---|
| 983 | very optimize by my :)
|
---|
| 984 | */
|
---|
| 985 | static void showfiles(void)
|
---|
| 986 | {
|
---|
| 987 | int ncols, row;
|
---|
| 988 | int column_width = 0;
|
---|
| 989 | int nfiles = num_matches;
|
---|
| 990 | int nrows = nfiles;
|
---|
| 991 | char str_add_chr[2];
|
---|
| 992 | int l;
|
---|
| 993 |
|
---|
| 994 | /* find the longest file name- use that as the column width */
|
---|
| 995 | for (row = 0; row < nrows; row++) {
|
---|
| 996 | l = strlen(matches[row]);
|
---|
| 997 | if(add_char_to_match[row])
|
---|
| 998 | l++;
|
---|
| 999 | if (column_width < l)
|
---|
| 1000 | column_width = l;
|
---|
| 1001 | }
|
---|
| 1002 | column_width += 2; /* min space for columns */
|
---|
| 1003 | ncols = cmdedit_termw / column_width;
|
---|
| 1004 |
|
---|
| 1005 | if (ncols > 1) {
|
---|
| 1006 | nrows /= ncols;
|
---|
| 1007 | if(nfiles % ncols)
|
---|
| 1008 | nrows++; /* round up fractionals */
|
---|
| 1009 | } else {
|
---|
| 1010 | ncols = 1;
|
---|
| 1011 | }
|
---|
| 1012 | str_add_chr[1] = 0;
|
---|
| 1013 | for (row = 0; row < nrows; row++) {
|
---|
| 1014 | int n = row;
|
---|
| 1015 | int nc;
|
---|
| 1016 | int acol;
|
---|
| 1017 |
|
---|
| 1018 | for(nc = 1; nc < ncols && n+nrows < nfiles; n += nrows, nc++) {
|
---|
| 1019 | str_add_chr[0] = add_char_to_match[n];
|
---|
| 1020 | acol = str_add_chr[0] ? column_width - 1 : column_width;
|
---|
| 1021 | printf("%s%s", matches[n], str_add_chr);
|
---|
| 1022 | l = strlen(matches[n]);
|
---|
| 1023 | while(l < acol) {
|
---|
| 1024 | putchar(' ');
|
---|
| 1025 | l++;
|
---|
| 1026 | }
|
---|
| 1027 | }
|
---|
| 1028 | str_add_chr[0] = add_char_to_match[n];
|
---|
| 1029 | printf("%s%s\n", matches[n], str_add_chr);
|
---|
| 1030 | }
|
---|
| 1031 | }
|
---|
| 1032 |
|
---|
| 1033 |
|
---|
| 1034 | static void input_tab(int *lastWasTab)
|
---|
| 1035 | {
|
---|
| 1036 | /* Do TAB completion */
|
---|
| 1037 | if (lastWasTab == 0) { /* free all memory */
|
---|
| 1038 | if (matches) {
|
---|
| 1039 | while (num_matches > 0)
|
---|
| 1040 | free(matches[--num_matches]);
|
---|
| 1041 | free(matches);
|
---|
| 1042 | matches = (char **) NULL;
|
---|
| 1043 | free(add_char_to_match);
|
---|
| 1044 | add_char_to_match = NULL;
|
---|
| 1045 | }
|
---|
| 1046 | return;
|
---|
| 1047 | }
|
---|
| 1048 | if (! *lastWasTab) {
|
---|
| 1049 |
|
---|
| 1050 | char *tmp, *tmp1;
|
---|
| 1051 | int len_found;
|
---|
| 1052 | char matchBuf[BUFSIZ];
|
---|
| 1053 | int find_type;
|
---|
| 1054 | int recalc_pos;
|
---|
| 1055 |
|
---|
| 1056 | *lastWasTab = TRUE; /* flop trigger */
|
---|
| 1057 |
|
---|
| 1058 | /* Make a local copy of the string -- up
|
---|
| 1059 | * to the position of the cursor */
|
---|
| 1060 | tmp = strncpy(matchBuf, command_ps, cursor);
|
---|
| 1061 | tmp[cursor] = 0;
|
---|
| 1062 |
|
---|
| 1063 | find_type = find_match(matchBuf, &recalc_pos);
|
---|
| 1064 |
|
---|
| 1065 | /* Free up any memory already allocated */
|
---|
| 1066 | input_tab(0);
|
---|
| 1067 |
|
---|
| 1068 | #ifdef CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
|
---|
| 1069 | /* If the word starts with `~' and there is no slash in the word,
|
---|
| 1070 | * then try completing this word as a username. */
|
---|
| 1071 |
|
---|
| 1072 | if (matchBuf[0] == '~' && strchr(matchBuf, '/') == 0)
|
---|
| 1073 | username_tab_completion(matchBuf, NULL);
|
---|
| 1074 | if (!matches)
|
---|
| 1075 | #endif
|
---|
| 1076 | /* Try to match any executable in our path and everything
|
---|
| 1077 | * in the current working directory that matches. */
|
---|
| 1078 | exe_n_cwd_tab_completion(matchBuf, find_type);
|
---|
| 1079 | /* Remove duplicate found and sort */
|
---|
| 1080 | if(matches) {
|
---|
| 1081 | int i, j, n, srt;
|
---|
| 1082 | /* bubble */
|
---|
| 1083 | n = num_matches;
|
---|
| 1084 | for(i=0; i<(n-1); i++)
|
---|
| 1085 | for(j=i+1; j<n; j++)
|
---|
| 1086 | if(matches[i]!=NULL && matches[j]!=NULL) {
|
---|
| 1087 | srt = strcmp(matches[i], matches[j]);
|
---|
| 1088 | if(srt == 0) {
|
---|
| 1089 | free(matches[j]);
|
---|
| 1090 | matches[j]=0;
|
---|
| 1091 | } else if(srt > 0) {
|
---|
| 1092 | tmp1 = matches[i];
|
---|
| 1093 | matches[i] = matches[j];
|
---|
| 1094 | matches[j] = tmp1;
|
---|
| 1095 | srt = add_char_to_match[i];
|
---|
| 1096 | add_char_to_match[i] = add_char_to_match[j];
|
---|
| 1097 | add_char_to_match[j] = srt;
|
---|
| 1098 | }
|
---|
| 1099 | }
|
---|
| 1100 | j = n;
|
---|
| 1101 | n = 0;
|
---|
| 1102 | for(i=0; i<j; i++)
|
---|
| 1103 | if(matches[i]) {
|
---|
| 1104 | matches[n]=matches[i];
|
---|
| 1105 | add_char_to_match[n]=add_char_to_match[i];
|
---|
| 1106 | n++;
|
---|
| 1107 | }
|
---|
| 1108 | num_matches = n;
|
---|
| 1109 | }
|
---|
| 1110 | /* Did we find exactly one match? */
|
---|
| 1111 | if (!matches || num_matches > 1) {
|
---|
| 1112 |
|
---|
| 1113 | beep();
|
---|
| 1114 | if (!matches)
|
---|
| 1115 | return; /* not found */
|
---|
| 1116 | /* find minimal match */
|
---|
| 1117 | tmp1 = bb_xstrdup(matches[0]);
|
---|
| 1118 | for (tmp = tmp1; *tmp; tmp++)
|
---|
| 1119 | for (len_found = 1; len_found < num_matches; len_found++)
|
---|
| 1120 | if (matches[len_found][(tmp - tmp1)] != *tmp) {
|
---|
| 1121 | *tmp = 0;
|
---|
| 1122 | break;
|
---|
| 1123 | }
|
---|
| 1124 | if (*tmp1 == 0) { /* have unique */
|
---|
| 1125 | free(tmp1);
|
---|
| 1126 | return;
|
---|
| 1127 | }
|
---|
| 1128 | tmp = add_quote_for_spec_chars(tmp1, 0);
|
---|
| 1129 | free(tmp1);
|
---|
| 1130 | } else { /* one match */
|
---|
| 1131 | tmp = add_quote_for_spec_chars(matches[0], add_char_to_match[0]);
|
---|
| 1132 | /* for next completion current found */
|
---|
| 1133 | *lastWasTab = FALSE;
|
---|
| 1134 | }
|
---|
| 1135 | len_found = strlen(tmp);
|
---|
| 1136 | /* have space to placed match? */
|
---|
| 1137 | if ((len_found - strlen(matchBuf) + len) < BUFSIZ) {
|
---|
| 1138 |
|
---|
| 1139 | /* before word for match */
|
---|
| 1140 | command_ps[cursor - recalc_pos] = 0;
|
---|
| 1141 | /* save tail line */
|
---|
| 1142 | strcpy(matchBuf, command_ps + cursor);
|
---|
| 1143 | /* add match */
|
---|
| 1144 | strcat(command_ps, tmp);
|
---|
| 1145 | /* add tail */
|
---|
| 1146 | strcat(command_ps, matchBuf);
|
---|
| 1147 | /* back to begin word for match */
|
---|
| 1148 | input_backward(recalc_pos);
|
---|
| 1149 | /* new pos */
|
---|
| 1150 | recalc_pos = cursor + len_found;
|
---|
| 1151 | /* new len */
|
---|
| 1152 | len = strlen(command_ps);
|
---|
| 1153 | /* write out the matched command */
|
---|
| 1154 | redraw(cmdedit_y, len - recalc_pos);
|
---|
| 1155 | }
|
---|
| 1156 | free(tmp);
|
---|
| 1157 | } else {
|
---|
| 1158 | /* Ok -- the last char was a TAB. Since they
|
---|
| 1159 | * just hit TAB again, print a list of all the
|
---|
| 1160 | * available choices... */
|
---|
| 1161 | if (matches && num_matches > 0) {
|
---|
| 1162 | int sav_cursor = cursor; /* change goto_new_line() */
|
---|
| 1163 |
|
---|
| 1164 | /* Go to the next line */
|
---|
| 1165 | goto_new_line();
|
---|
| 1166 | showfiles();
|
---|
| 1167 | redraw(0, len - sav_cursor);
|
---|
| 1168 | }
|
---|
| 1169 | }
|
---|
| 1170 | }
|
---|
| 1171 | #endif /* CONFIG_FEATURE_COMMAND_TAB_COMPLETION */
|
---|
| 1172 |
|
---|
| 1173 | #if MAX_HISTORY >= 1
|
---|
| 1174 | static void get_previous_history(void)
|
---|
| 1175 | {
|
---|
| 1176 | if(command_ps[0] != 0 || history[cur_history] == 0) {
|
---|
| 1177 | free(history[cur_history]);
|
---|
| 1178 | history[cur_history] = bb_xstrdup(command_ps);
|
---|
| 1179 | }
|
---|
| 1180 | cur_history--;
|
---|
| 1181 | }
|
---|
| 1182 |
|
---|
| 1183 | static int get_next_history(void)
|
---|
| 1184 | {
|
---|
| 1185 | int ch = cur_history;
|
---|
| 1186 |
|
---|
| 1187 | if (ch < n_history) {
|
---|
| 1188 | get_previous_history(); /* save the current history line */
|
---|
| 1189 | return (cur_history = ch+1);
|
---|
| 1190 | } else {
|
---|
| 1191 | beep();
|
---|
| 1192 | return 0;
|
---|
| 1193 | }
|
---|
| 1194 | }
|
---|
| 1195 |
|
---|
| 1196 | #ifdef CONFIG_FEATURE_COMMAND_SAVEHISTORY
|
---|
| 1197 | void load_history ( const char *fromfile )
|
---|
| 1198 | {
|
---|
| 1199 | FILE *fp;
|
---|
| 1200 | int hi;
|
---|
| 1201 |
|
---|
| 1202 | /* cleanup old */
|
---|
| 1203 |
|
---|
| 1204 | for(hi = n_history; hi > 0; ) {
|
---|
| 1205 | hi--;
|
---|
| 1206 | free ( history [hi] );
|
---|
| 1207 | }
|
---|
| 1208 |
|
---|
| 1209 | if (( fp = fopen ( fromfile, "r" ))) {
|
---|
| 1210 |
|
---|
| 1211 | for ( hi = 0; hi < MAX_HISTORY; ) {
|
---|
| 1212 | char * hl = bb_get_chomped_line_from_file(fp);
|
---|
| 1213 | int l;
|
---|
| 1214 |
|
---|
| 1215 | if(!hl)
|
---|
| 1216 | break;
|
---|
| 1217 | l = strlen(hl);
|
---|
| 1218 | if(l >= BUFSIZ)
|
---|
| 1219 | hl[BUFSIZ-1] = 0;
|
---|
| 1220 | if(l == 0 || hl[0] == ' ') {
|
---|
| 1221 | free(hl);
|
---|
| 1222 | continue;
|
---|
| 1223 | }
|
---|
| 1224 | history [hi++] = hl;
|
---|
| 1225 | }
|
---|
| 1226 | fclose ( fp );
|
---|
| 1227 | }
|
---|
| 1228 | cur_history = n_history = hi;
|
---|
| 1229 | }
|
---|
| 1230 |
|
---|
| 1231 | void save_history ( const char *tofile )
|
---|
| 1232 | {
|
---|
| 1233 | FILE *fp = fopen ( tofile, "w" );
|
---|
| 1234 |
|
---|
| 1235 | if ( fp ) {
|
---|
| 1236 | int i;
|
---|
| 1237 |
|
---|
| 1238 | for ( i = 0; i < n_history; i++ ) {
|
---|
| 1239 | fprintf(fp, "%s\n", history [i]);
|
---|
| 1240 | }
|
---|
| 1241 | fclose ( fp );
|
---|
| 1242 | }
|
---|
| 1243 | }
|
---|
| 1244 | #endif
|
---|
| 1245 |
|
---|
| 1246 | #endif
|
---|
| 1247 |
|
---|
| 1248 | enum {
|
---|
| 1249 | ESC = 27,
|
---|
| 1250 | DEL = 127,
|
---|
| 1251 | };
|
---|
| 1252 |
|
---|
| 1253 |
|
---|
| 1254 | /*
|
---|
| 1255 | * This function is used to grab a character buffer
|
---|
| 1256 | * from the input file descriptor and allows you to
|
---|
| 1257 | * a string with full command editing (sort of like
|
---|
| 1258 | * a mini readline).
|
---|
| 1259 | *
|
---|
| 1260 | * The following standard commands are not implemented:
|
---|
| 1261 | * ESC-b -- Move back one word
|
---|
| 1262 | * ESC-f -- Move forward one word
|
---|
| 1263 | * ESC-d -- Delete back one word
|
---|
| 1264 | * ESC-h -- Delete forward one word
|
---|
| 1265 | * CTL-t -- Transpose two characters
|
---|
| 1266 | *
|
---|
| 1267 | * Minimalist vi-style command line editing available if configured.
|
---|
| 1268 | * vi mode implemented 2005 by Paul Fox <pgf@foxharp.boston.ma.us>
|
---|
| 1269 | *
|
---|
| 1270 | */
|
---|
| 1271 |
|
---|
| 1272 | #ifdef CONFIG_FEATURE_COMMAND_EDITING_VI
|
---|
| 1273 | static int vi_mode;
|
---|
| 1274 |
|
---|
| 1275 | void setvimode ( int viflag )
|
---|
| 1276 | {
|
---|
| 1277 | vi_mode = viflag;
|
---|
| 1278 | }
|
---|
| 1279 |
|
---|
| 1280 | static void
|
---|
| 1281 | vi_Word_motion(char *command, int eat)
|
---|
| 1282 | {
|
---|
| 1283 | while (cursor < len && !isspace(command[cursor]))
|
---|
| 1284 | input_forward();
|
---|
| 1285 | if (eat) while (cursor < len && isspace(command[cursor]))
|
---|
| 1286 | input_forward();
|
---|
| 1287 | }
|
---|
| 1288 |
|
---|
| 1289 | static void
|
---|
| 1290 | vi_word_motion(char *command, int eat)
|
---|
| 1291 | {
|
---|
| 1292 | if (isalnum(command[cursor]) || command[cursor] == '_') {
|
---|
| 1293 | while (cursor < len &&
|
---|
| 1294 | (isalnum(command[cursor+1]) ||
|
---|
| 1295 | command[cursor+1] == '_'))
|
---|
| 1296 | input_forward();
|
---|
| 1297 | } else if (ispunct(command[cursor])) {
|
---|
| 1298 | while (cursor < len &&
|
---|
| 1299 | (ispunct(command[cursor+1])))
|
---|
| 1300 | input_forward();
|
---|
| 1301 | }
|
---|
| 1302 |
|
---|
| 1303 | if (cursor < len)
|
---|
| 1304 | input_forward();
|
---|
| 1305 |
|
---|
| 1306 | if (eat && cursor < len && isspace(command[cursor]))
|
---|
| 1307 | while (cursor < len && isspace(command[cursor]))
|
---|
| 1308 | input_forward();
|
---|
| 1309 | }
|
---|
| 1310 |
|
---|
| 1311 | static void
|
---|
| 1312 | vi_End_motion(char *command)
|
---|
| 1313 | {
|
---|
| 1314 | input_forward();
|
---|
| 1315 | while (cursor < len && isspace(command[cursor]))
|
---|
| 1316 | input_forward();
|
---|
| 1317 | while (cursor < len-1 && !isspace(command[cursor+1]))
|
---|
| 1318 | input_forward();
|
---|
| 1319 | }
|
---|
| 1320 |
|
---|
| 1321 | static void
|
---|
| 1322 | vi_end_motion(char *command)
|
---|
| 1323 | {
|
---|
| 1324 | if (cursor >= len-1)
|
---|
| 1325 | return;
|
---|
| 1326 | input_forward();
|
---|
| 1327 | while (cursor < len-1 && isspace(command[cursor]))
|
---|
| 1328 | input_forward();
|
---|
| 1329 | if (cursor >= len-1)
|
---|
| 1330 | return;
|
---|
| 1331 | if (isalnum(command[cursor]) || command[cursor] == '_') {
|
---|
| 1332 | while (cursor < len-1 &&
|
---|
| 1333 | (isalnum(command[cursor+1]) ||
|
---|
| 1334 | command[cursor+1] == '_'))
|
---|
| 1335 | input_forward();
|
---|
| 1336 | } else if (ispunct(command[cursor])) {
|
---|
| 1337 | while (cursor < len-1 &&
|
---|
| 1338 | (ispunct(command[cursor+1])))
|
---|
| 1339 | input_forward();
|
---|
| 1340 | }
|
---|
| 1341 | }
|
---|
| 1342 |
|
---|
| 1343 | static void
|
---|
| 1344 | vi_Back_motion(char *command)
|
---|
| 1345 | {
|
---|
| 1346 | while (cursor > 0 && isspace(command[cursor-1]))
|
---|
| 1347 | input_backward(1);
|
---|
| 1348 | while (cursor > 0 && !isspace(command[cursor-1]))
|
---|
| 1349 | input_backward(1);
|
---|
| 1350 | }
|
---|
| 1351 |
|
---|
| 1352 | static void
|
---|
| 1353 | vi_back_motion(char *command)
|
---|
| 1354 | {
|
---|
| 1355 | if (cursor <= 0)
|
---|
| 1356 | return;
|
---|
| 1357 | input_backward(1);
|
---|
| 1358 | while (cursor > 0 && isspace(command[cursor]))
|
---|
| 1359 | input_backward(1);
|
---|
| 1360 | if (cursor <= 0)
|
---|
| 1361 | return;
|
---|
| 1362 | if (isalnum(command[cursor]) || command[cursor] == '_') {
|
---|
| 1363 | while (cursor > 0 &&
|
---|
| 1364 | (isalnum(command[cursor-1]) ||
|
---|
| 1365 | command[cursor-1] == '_'))
|
---|
| 1366 | input_backward(1);
|
---|
| 1367 | } else if (ispunct(command[cursor])) {
|
---|
| 1368 | while (cursor > 0 &&
|
---|
| 1369 | (ispunct(command[cursor-1])))
|
---|
| 1370 | input_backward(1);
|
---|
| 1371 | }
|
---|
| 1372 | }
|
---|
| 1373 | #endif
|
---|
| 1374 |
|
---|
| 1375 | /*
|
---|
| 1376 | * the emacs and vi modes share much of the code in the big
|
---|
| 1377 | * command loop. commands entered when in vi's command mode (aka
|
---|
| 1378 | * "escape mode") get an extra bit added to distinguish them --
|
---|
| 1379 | * this keeps them from being self-inserted. this clutters the
|
---|
| 1380 | * big switch a bit, but keeps all the code in one place.
|
---|
| 1381 | */
|
---|
| 1382 |
|
---|
| 1383 | #define vbit 0x100
|
---|
| 1384 |
|
---|
| 1385 | /* leave out the "vi-mode"-only case labels if vi editing isn't
|
---|
| 1386 | * configured. */
|
---|
| 1387 | #define vi_case(caselabel) USE_FEATURE_COMMAND_EDITING(caselabel)
|
---|
| 1388 |
|
---|
| 1389 | /* convert uppercase ascii to equivalent control char, for readability */
|
---|
| 1390 | #define CNTRL(uc_char) ((uc_char) - 0x40)
|
---|
| 1391 |
|
---|
| 1392 |
|
---|
| 1393 | int cmdedit_read_input(char *prompt, char command[BUFSIZ])
|
---|
| 1394 | {
|
---|
| 1395 |
|
---|
| 1396 | int break_out = 0;
|
---|
| 1397 | int lastWasTab = FALSE;
|
---|
| 1398 | unsigned char c;
|
---|
| 1399 | unsigned int ic;
|
---|
| 1400 | #ifdef CONFIG_FEATURE_COMMAND_EDITING_VI
|
---|
| 1401 | unsigned int prevc;
|
---|
| 1402 | int vi_cmdmode = 0;
|
---|
| 1403 | #endif
|
---|
| 1404 | /* prepare before init handlers */
|
---|
| 1405 | cmdedit_y = 0; /* quasireal y, not true work if line > xt*yt */
|
---|
| 1406 | len = 0;
|
---|
| 1407 | command_ps = command;
|
---|
| 1408 |
|
---|
| 1409 | getTermSettings(0, (void *) &initial_settings);
|
---|
| 1410 | memcpy(&new_settings, &initial_settings, sizeof(struct termios));
|
---|
| 1411 | new_settings.c_lflag &= ~ICANON; /* unbuffered input */
|
---|
| 1412 | /* Turn off echoing and CTRL-C, so we can trap it */
|
---|
| 1413 | new_settings.c_lflag &= ~(ECHO | ECHONL | ISIG);
|
---|
| 1414 | /* Hmm, in linux c_cc[] not parsed if set ~ICANON */
|
---|
| 1415 | new_settings.c_cc[VMIN] = 1;
|
---|
| 1416 | new_settings.c_cc[VTIME] = 0;
|
---|
| 1417 | /* Turn off CTRL-C, so we can trap it */
|
---|
| 1418 | # ifndef _POSIX_VDISABLE
|
---|
| 1419 | # define _POSIX_VDISABLE '\0'
|
---|
| 1420 | # endif
|
---|
| 1421 | new_settings.c_cc[VINTR] = _POSIX_VDISABLE;
|
---|
| 1422 | command[0] = 0;
|
---|
| 1423 |
|
---|
| 1424 | setTermSettings(0, (void *) &new_settings);
|
---|
| 1425 | handlers_sets |= SET_RESET_TERM;
|
---|
| 1426 |
|
---|
| 1427 | /* Now initialize things */
|
---|
| 1428 | cmdedit_init();
|
---|
| 1429 | /* Print out the command prompt */
|
---|
| 1430 | parse_prompt(prompt);
|
---|
| 1431 |
|
---|
| 1432 | while (1) {
|
---|
| 1433 |
|
---|
| 1434 | fflush(stdout); /* buffered out to fast */
|
---|
| 1435 |
|
---|
| 1436 | if (safe_read(0, &c, 1) < 1)
|
---|
| 1437 | /* if we can't read input then exit */
|
---|
| 1438 | goto prepare_to_die;
|
---|
| 1439 |
|
---|
| 1440 | ic = c;
|
---|
| 1441 |
|
---|
| 1442 | #ifdef CONFIG_FEATURE_COMMAND_EDITING_VI
|
---|
| 1443 | newdelflag = 1;
|
---|
| 1444 | if (vi_cmdmode)
|
---|
| 1445 | ic |= vbit;
|
---|
| 1446 | #endif
|
---|
| 1447 | switch (ic)
|
---|
| 1448 | {
|
---|
| 1449 | case '\n':
|
---|
| 1450 | case '\r':
|
---|
| 1451 | vi_case( case '\n'|vbit: )
|
---|
| 1452 | vi_case( case '\r'|vbit: )
|
---|
| 1453 | /* Enter */
|
---|
| 1454 | goto_new_line();
|
---|
| 1455 | break_out = 1;
|
---|
| 1456 | break;
|
---|
| 1457 | case CNTRL('A'):
|
---|
| 1458 | vi_case( case '0'|vbit: )
|
---|
| 1459 | /* Control-a -- Beginning of line */
|
---|
| 1460 | input_backward(cursor);
|
---|
| 1461 | break;
|
---|
| 1462 | case CNTRL('B'):
|
---|
| 1463 | vi_case( case 'h'|vbit: )
|
---|
| 1464 | vi_case( case '\b'|vbit: )
|
---|
| 1465 | vi_case( case DEL|vbit: )
|
---|
| 1466 | /* Control-b -- Move back one character */
|
---|
| 1467 | input_backward(1);
|
---|
| 1468 | break;
|
---|
| 1469 | case CNTRL('C'):
|
---|
| 1470 | vi_case( case CNTRL('C')|vbit: )
|
---|
| 1471 | /* Control-c -- stop gathering input */
|
---|
| 1472 | goto_new_line();
|
---|
| 1473 | #ifndef CONFIG_ASH
|
---|
| 1474 | command[0] = 0;
|
---|
| 1475 | len = 0;
|
---|
| 1476 | lastWasTab = FALSE;
|
---|
| 1477 | put_prompt();
|
---|
| 1478 | #else
|
---|
| 1479 | len = 0;
|
---|
| 1480 | break_out = -1; /* to control traps */
|
---|
| 1481 | #endif
|
---|
| 1482 | break;
|
---|
| 1483 | case CNTRL('D'):
|
---|
| 1484 | /* Control-d -- Delete one character, or exit
|
---|
| 1485 | * if the len=0 and no chars to delete */
|
---|
| 1486 | if (len == 0) {
|
---|
| 1487 | errno = 0;
|
---|
| 1488 | prepare_to_die:
|
---|
| 1489 | #if !defined(CONFIG_ASH)
|
---|
| 1490 | printf("exit");
|
---|
| 1491 | goto_new_line();
|
---|
| 1492 | /* cmdedit_reset_term() called in atexit */
|
---|
| 1493 | exit(EXIT_SUCCESS);
|
---|
| 1494 | #else
|
---|
| 1495 | /* to control stopped jobs */
|
---|
| 1496 | len = break_out = -1;
|
---|
| 1497 | break;
|
---|
| 1498 | #endif
|
---|
| 1499 | } else {
|
---|
| 1500 | input_delete(0);
|
---|
| 1501 | }
|
---|
| 1502 | break;
|
---|
| 1503 | case CNTRL('E'):
|
---|
| 1504 | vi_case( case '$'|vbit: )
|
---|
| 1505 | /* Control-e -- End of line */
|
---|
| 1506 | input_end();
|
---|
| 1507 | break;
|
---|
| 1508 | case CNTRL('F'):
|
---|
| 1509 | vi_case( case 'l'|vbit: )
|
---|
| 1510 | vi_case( case ' '|vbit: )
|
---|
| 1511 | /* Control-f -- Move forward one character */
|
---|
| 1512 | input_forward();
|
---|
| 1513 | break;
|
---|
| 1514 | case '\b':
|
---|
| 1515 | case DEL:
|
---|
| 1516 | /* Control-h and DEL */
|
---|
| 1517 | input_backspace();
|
---|
| 1518 | break;
|
---|
| 1519 | case '\t':
|
---|
| 1520 | #ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION
|
---|
| 1521 | input_tab(&lastWasTab);
|
---|
| 1522 | #endif
|
---|
| 1523 | break;
|
---|
| 1524 | case CNTRL('K'):
|
---|
| 1525 | /* Control-k -- clear to end of line */
|
---|
| 1526 | *(command + cursor) = 0;
|
---|
| 1527 | len = cursor;
|
---|
| 1528 | printf("\033[J");
|
---|
| 1529 | break;
|
---|
| 1530 | case CNTRL('L'):
|
---|
| 1531 | vi_case( case CNTRL('L')|vbit: )
|
---|
| 1532 | /* Control-l -- clear screen */
|
---|
| 1533 | printf("\033[H");
|
---|
| 1534 | redraw(0, len-cursor);
|
---|
| 1535 | break;
|
---|
| 1536 | #if MAX_HISTORY >= 1
|
---|
| 1537 | case CNTRL('N'):
|
---|
| 1538 | vi_case( case CNTRL('N')|vbit: )
|
---|
| 1539 | vi_case( case 'j'|vbit: )
|
---|
| 1540 | /* Control-n -- Get next command in history */
|
---|
| 1541 | if (get_next_history())
|
---|
| 1542 | goto rewrite_line;
|
---|
| 1543 | break;
|
---|
| 1544 | case CNTRL('P'):
|
---|
| 1545 | vi_case( case CNTRL('P')|vbit: )
|
---|
| 1546 | vi_case( case 'k'|vbit: )
|
---|
| 1547 | /* Control-p -- Get previous command from history */
|
---|
| 1548 | if (cur_history > 0) {
|
---|
| 1549 | get_previous_history();
|
---|
| 1550 | goto rewrite_line;
|
---|
| 1551 | } else {
|
---|
| 1552 | beep();
|
---|
| 1553 | }
|
---|
| 1554 | break;
|
---|
| 1555 | #endif
|
---|
| 1556 | case CNTRL('U'):
|
---|
| 1557 | vi_case( case CNTRL('U')|vbit: )
|
---|
| 1558 | /* Control-U -- Clear line before cursor */
|
---|
| 1559 | if (cursor) {
|
---|
| 1560 | strcpy(command, command + cursor);
|
---|
| 1561 | redraw(cmdedit_y, len -= cursor);
|
---|
| 1562 | }
|
---|
| 1563 | break;
|
---|
| 1564 | case CNTRL('W'):
|
---|
| 1565 | vi_case( case CNTRL('W')|vbit: )
|
---|
| 1566 | /* Control-W -- Remove the last word */
|
---|
| 1567 | while (cursor > 0 && isspace(command[cursor-1]))
|
---|
| 1568 | input_backspace();
|
---|
| 1569 | while (cursor > 0 &&!isspace(command[cursor-1]))
|
---|
| 1570 | input_backspace();
|
---|
| 1571 | break;
|
---|
| 1572 | #if CONFIG_FEATURE_COMMAND_EDITING_VI
|
---|
| 1573 | case 'i'|vbit:
|
---|
| 1574 | vi_cmdmode = 0;
|
---|
| 1575 | break;
|
---|
| 1576 | case 'I'|vbit:
|
---|
| 1577 | input_backward(cursor);
|
---|
| 1578 | vi_cmdmode = 0;
|
---|
| 1579 | break;
|
---|
| 1580 | case 'a'|vbit:
|
---|
| 1581 | input_forward();
|
---|
| 1582 | vi_cmdmode = 0;
|
---|
| 1583 | break;
|
---|
| 1584 | case 'A'|vbit:
|
---|
| 1585 | input_end();
|
---|
| 1586 | vi_cmdmode = 0;
|
---|
| 1587 | break;
|
---|
| 1588 | case 'x'|vbit:
|
---|
| 1589 | input_delete(1);
|
---|
| 1590 | break;
|
---|
| 1591 | case 'X'|vbit:
|
---|
| 1592 | if (cursor > 0) {
|
---|
| 1593 | input_backward(1);
|
---|
| 1594 | input_delete(1);
|
---|
| 1595 | }
|
---|
| 1596 | break;
|
---|
| 1597 | case 'W'|vbit:
|
---|
| 1598 | vi_Word_motion(command, 1);
|
---|
| 1599 | break;
|
---|
| 1600 | case 'w'|vbit:
|
---|
| 1601 | vi_word_motion(command, 1);
|
---|
| 1602 | break;
|
---|
| 1603 | case 'E'|vbit:
|
---|
| 1604 | vi_End_motion(command);
|
---|
| 1605 | break;
|
---|
| 1606 | case 'e'|vbit:
|
---|
| 1607 | vi_end_motion(command);
|
---|
| 1608 | break;
|
---|
| 1609 | case 'B'|vbit:
|
---|
| 1610 | vi_Back_motion(command);
|
---|
| 1611 | break;
|
---|
| 1612 | case 'b'|vbit:
|
---|
| 1613 | vi_back_motion(command);
|
---|
| 1614 | break;
|
---|
| 1615 | case 'C'|vbit:
|
---|
| 1616 | vi_cmdmode = 0;
|
---|
| 1617 | /* fall through */
|
---|
| 1618 | case 'D'|vbit:
|
---|
| 1619 | goto clear_to_eol;
|
---|
| 1620 |
|
---|
| 1621 | case 'c'|vbit:
|
---|
| 1622 | vi_cmdmode = 0;
|
---|
| 1623 | /* fall through */
|
---|
| 1624 | case 'd'|vbit:
|
---|
| 1625 | {
|
---|
| 1626 | int nc, sc;
|
---|
| 1627 | sc = cursor;
|
---|
| 1628 | prevc = ic;
|
---|
| 1629 | if (safe_read(0, &c, 1) < 1)
|
---|
| 1630 | goto prepare_to_die;
|
---|
| 1631 | if (c == (prevc & 0xff)) {
|
---|
| 1632 | /* "cc", "dd" */
|
---|
| 1633 | input_backward(cursor);
|
---|
| 1634 | goto clear_to_eol;
|
---|
| 1635 | break;
|
---|
| 1636 | }
|
---|
| 1637 | switch(c) {
|
---|
| 1638 | case 'w':
|
---|
| 1639 | case 'W':
|
---|
| 1640 | case 'e':
|
---|
| 1641 | case 'E':
|
---|
| 1642 | switch (c) {
|
---|
| 1643 | case 'w': /* "dw", "cw" */
|
---|
| 1644 | vi_word_motion(command, vi_cmdmode);
|
---|
| 1645 | break;
|
---|
| 1646 | case 'W': /* 'dW', 'cW' */
|
---|
| 1647 | vi_Word_motion(command, vi_cmdmode);
|
---|
| 1648 | break;
|
---|
| 1649 | case 'e': /* 'de', 'ce' */
|
---|
| 1650 | vi_end_motion(command);
|
---|
| 1651 | input_forward();
|
---|
| 1652 | break;
|
---|
| 1653 | case 'E': /* 'dE', 'cE' */
|
---|
| 1654 | vi_End_motion(command);
|
---|
| 1655 | input_forward();
|
---|
| 1656 | break;
|
---|
| 1657 | }
|
---|
| 1658 | nc = cursor;
|
---|
| 1659 | input_backward(cursor - sc);
|
---|
| 1660 | while (nc-- > cursor)
|
---|
| 1661 | input_delete(1);
|
---|
| 1662 | break;
|
---|
| 1663 | case 'b': /* "db", "cb" */
|
---|
| 1664 | case 'B': /* implemented as B */
|
---|
| 1665 | if (c == 'b')
|
---|
| 1666 | vi_back_motion(command);
|
---|
| 1667 | else
|
---|
| 1668 | vi_Back_motion(command);
|
---|
| 1669 | while (sc-- > cursor)
|
---|
| 1670 | input_delete(1);
|
---|
| 1671 | break;
|
---|
| 1672 | case ' ': /* "d ", "c " */
|
---|
| 1673 | input_delete(1);
|
---|
| 1674 | break;
|
---|
| 1675 | case '$': /* "d$", "c$" */
|
---|
| 1676 | clear_to_eol:
|
---|
| 1677 | while (cursor < len)
|
---|
| 1678 | input_delete(1);
|
---|
| 1679 | break;
|
---|
| 1680 | }
|
---|
| 1681 | }
|
---|
| 1682 | break;
|
---|
| 1683 | case 'p'|vbit:
|
---|
| 1684 | input_forward();
|
---|
| 1685 | /* fallthrough */
|
---|
| 1686 | case 'P'|vbit:
|
---|
| 1687 | put();
|
---|
| 1688 | break;
|
---|
| 1689 | case 'r'|vbit:
|
---|
| 1690 | if (safe_read(0, &c, 1) < 1)
|
---|
| 1691 | goto prepare_to_die;
|
---|
| 1692 | if (c == 0)
|
---|
| 1693 | beep();
|
---|
| 1694 | else {
|
---|
| 1695 | *(command + cursor) = c;
|
---|
| 1696 | putchar(c);
|
---|
| 1697 | putchar('\b');
|
---|
| 1698 | }
|
---|
| 1699 | break;
|
---|
| 1700 | #endif /* CONFIG_FEATURE_COMMAND_EDITING_VI */
|
---|
| 1701 |
|
---|
| 1702 | case ESC:
|
---|
| 1703 |
|
---|
| 1704 | #if CONFIG_FEATURE_COMMAND_EDITING_VI
|
---|
| 1705 | if (vi_mode) {
|
---|
| 1706 | /* ESC: insert mode --> command mode */
|
---|
| 1707 | vi_cmdmode = 1;
|
---|
| 1708 | input_backward(1);
|
---|
| 1709 | break;
|
---|
| 1710 | }
|
---|
| 1711 | #endif
|
---|
| 1712 | /* escape sequence follows */
|
---|
| 1713 | if (safe_read(0, &c, 1) < 1)
|
---|
| 1714 | goto prepare_to_die;
|
---|
| 1715 | /* different vt100 emulations */
|
---|
| 1716 | if (c == '[' || c == 'O') {
|
---|
| 1717 | vi_case( case '['|vbit: )
|
---|
| 1718 | vi_case( case 'O'|vbit: )
|
---|
| 1719 | if (safe_read(0, &c, 1) < 1)
|
---|
| 1720 | goto prepare_to_die;
|
---|
| 1721 | }
|
---|
| 1722 | if (c >= '1' && c <= '9') {
|
---|
| 1723 | unsigned char dummy;
|
---|
| 1724 |
|
---|
| 1725 | if (safe_read(0, &dummy, 1) < 1)
|
---|
| 1726 | goto prepare_to_die;
|
---|
| 1727 | if(dummy != '~')
|
---|
| 1728 | c = 0;
|
---|
| 1729 | }
|
---|
| 1730 | switch (c) {
|
---|
| 1731 | #ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION
|
---|
| 1732 | case '\t': /* Alt-Tab */
|
---|
| 1733 |
|
---|
| 1734 | input_tab(&lastWasTab);
|
---|
| 1735 | break;
|
---|
| 1736 | #endif
|
---|
| 1737 | #if MAX_HISTORY >= 1
|
---|
| 1738 | case 'A':
|
---|
| 1739 | /* Up Arrow -- Get previous command from history */
|
---|
| 1740 | if (cur_history > 0) {
|
---|
| 1741 | get_previous_history();
|
---|
| 1742 | goto rewrite_line;
|
---|
| 1743 | } else {
|
---|
| 1744 | beep();
|
---|
| 1745 | }
|
---|
| 1746 | break;
|
---|
| 1747 | case 'B':
|
---|
| 1748 | /* Down Arrow -- Get next command in history */
|
---|
| 1749 | if (!get_next_history())
|
---|
| 1750 | break;
|
---|
| 1751 | /* Rewrite the line with the selected history item */
|
---|
| 1752 | rewrite_line:
|
---|
| 1753 | /* change command */
|
---|
| 1754 | len = strlen(strcpy(command, history[cur_history]));
|
---|
| 1755 | /* redraw and go to eol (bol, in vi */
|
---|
| 1756 | #if CONFIG_FEATURE_COMMAND_EDITING_VI
|
---|
| 1757 | redraw(cmdedit_y, vi_mode ? 9999:0);
|
---|
| 1758 | #else
|
---|
| 1759 | redraw(cmdedit_y, 0);
|
---|
| 1760 | #endif
|
---|
| 1761 | break;
|
---|
| 1762 | #endif
|
---|
| 1763 | case 'C':
|
---|
| 1764 | /* Right Arrow -- Move forward one character */
|
---|
| 1765 | input_forward();
|
---|
| 1766 | break;
|
---|
| 1767 | case 'D':
|
---|
| 1768 | /* Left Arrow -- Move back one character */
|
---|
| 1769 | input_backward(1);
|
---|
| 1770 | break;
|
---|
| 1771 | case '3':
|
---|
| 1772 | /* Delete */
|
---|
| 1773 | input_delete(0);
|
---|
| 1774 | break;
|
---|
| 1775 | case '1':
|
---|
| 1776 | case 'H':
|
---|
| 1777 | /* <Home> */
|
---|
| 1778 | input_backward(cursor);
|
---|
| 1779 | break;
|
---|
| 1780 | case '4':
|
---|
| 1781 | case 'F':
|
---|
| 1782 | /* <End> */
|
---|
| 1783 | input_end();
|
---|
| 1784 | break;
|
---|
| 1785 | default:
|
---|
| 1786 | c = 0;
|
---|
| 1787 | beep();
|
---|
| 1788 | }
|
---|
| 1789 | break;
|
---|
| 1790 |
|
---|
| 1791 | default: /* If it's regular input, do the normal thing */
|
---|
| 1792 | #ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT
|
---|
| 1793 | /* Control-V -- Add non-printable symbol */
|
---|
| 1794 | if (c == CNTRL('V')) {
|
---|
| 1795 | if (safe_read(0, &c, 1) < 1)
|
---|
| 1796 | goto prepare_to_die;
|
---|
| 1797 | if (c == 0) {
|
---|
| 1798 | beep();
|
---|
| 1799 | break;
|
---|
| 1800 | }
|
---|
| 1801 | } else
|
---|
| 1802 | #endif
|
---|
| 1803 | {
|
---|
| 1804 | #if CONFIG_FEATURE_COMMAND_EDITING_VI
|
---|
| 1805 | if (vi_cmdmode) /* don't self-insert */
|
---|
| 1806 | break;
|
---|
| 1807 | #endif
|
---|
| 1808 | if (!Isprint(c)) /* Skip non-printable characters */
|
---|
| 1809 | break;
|
---|
| 1810 | }
|
---|
| 1811 |
|
---|
| 1812 | if (len >= (BUFSIZ - 2)) /* Need to leave space for enter */
|
---|
| 1813 | break;
|
---|
| 1814 |
|
---|
| 1815 | len++;
|
---|
| 1816 |
|
---|
| 1817 | if (cursor == (len - 1)) { /* Append if at the end of the line */
|
---|
| 1818 | *(command + cursor) = c;
|
---|
| 1819 | *(command + cursor + 1) = 0;
|
---|
| 1820 | cmdedit_set_out_char(0);
|
---|
| 1821 | } else { /* Insert otherwise */
|
---|
| 1822 | int sc = cursor;
|
---|
| 1823 |
|
---|
| 1824 | memmove(command + sc + 1, command + sc, len - sc);
|
---|
| 1825 | *(command + sc) = c;
|
---|
| 1826 | sc++;
|
---|
| 1827 | /* rewrite from cursor */
|
---|
| 1828 | input_end();
|
---|
| 1829 | /* to prev x pos + 1 */
|
---|
| 1830 | input_backward(cursor - sc);
|
---|
| 1831 | }
|
---|
| 1832 |
|
---|
| 1833 | break;
|
---|
| 1834 | }
|
---|
| 1835 | if (break_out) /* Enter is the command terminator, no more input. */
|
---|
| 1836 | break;
|
---|
| 1837 |
|
---|
| 1838 | if (c != '\t')
|
---|
| 1839 | lastWasTab = FALSE;
|
---|
| 1840 | }
|
---|
| 1841 |
|
---|
| 1842 | setTermSettings(0, (void *) &initial_settings);
|
---|
| 1843 | handlers_sets &= ~SET_RESET_TERM;
|
---|
| 1844 |
|
---|
| 1845 | #if MAX_HISTORY >= 1
|
---|
| 1846 | /* Handle command history log */
|
---|
| 1847 | /* cleanup may be saved current command line */
|
---|
| 1848 | if (len> 0) { /* no put empty line */
|
---|
| 1849 | int i = n_history;
|
---|
| 1850 |
|
---|
| 1851 | free(history[MAX_HISTORY]);
|
---|
| 1852 | history[MAX_HISTORY] = 0;
|
---|
| 1853 | /* After max history, remove the oldest command */
|
---|
| 1854 | if (i >= MAX_HISTORY) {
|
---|
| 1855 | free(history[0]);
|
---|
| 1856 | for(i = 0; i < (MAX_HISTORY-1); i++)
|
---|
| 1857 | history[i] = history[i+1];
|
---|
| 1858 | }
|
---|
| 1859 | history[i++] = bb_xstrdup(command);
|
---|
| 1860 | cur_history = i;
|
---|
| 1861 | n_history = i;
|
---|
| 1862 | #if defined(CONFIG_FEATURE_SH_FANCY_PROMPT)
|
---|
| 1863 | num_ok_lines++;
|
---|
| 1864 | #endif
|
---|
| 1865 | }
|
---|
| 1866 | #else /* MAX_HISTORY < 1 */
|
---|
| 1867 | #if defined(CONFIG_FEATURE_SH_FANCY_PROMPT)
|
---|
| 1868 | if (len > 0) { /* no put empty line */
|
---|
| 1869 | num_ok_lines++;
|
---|
| 1870 | }
|
---|
| 1871 | #endif
|
---|
| 1872 | #endif /* MAX_HISTORY >= 1 */
|
---|
| 1873 | if (break_out > 0) {
|
---|
| 1874 | command[len++] = '\n'; /* set '\n' */
|
---|
| 1875 | command[len] = 0;
|
---|
| 1876 | }
|
---|
| 1877 | #if defined(CONFIG_FEATURE_CLEAN_UP) && defined(CONFIG_FEATURE_COMMAND_TAB_COMPLETION)
|
---|
| 1878 | input_tab(0); /* strong free */
|
---|
| 1879 | #endif
|
---|
| 1880 | #if defined(CONFIG_FEATURE_SH_FANCY_PROMPT)
|
---|
| 1881 | free(cmdedit_prompt);
|
---|
| 1882 | #endif
|
---|
| 1883 | cmdedit_reset_term();
|
---|
| 1884 | return len;
|
---|
| 1885 | }
|
---|
| 1886 |
|
---|
| 1887 |
|
---|
| 1888 |
|
---|
| 1889 | #endif /* CONFIG_FEATURE_COMMAND_EDITING */
|
---|
| 1890 |
|
---|
| 1891 |
|
---|
| 1892 | #ifdef TEST
|
---|
| 1893 |
|
---|
| 1894 | const char *bb_applet_name = "debug stuff usage";
|
---|
| 1895 |
|
---|
| 1896 | #ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT
|
---|
| 1897 | #include <locale.h>
|
---|
| 1898 | #endif
|
---|
| 1899 |
|
---|
| 1900 | int main(int argc, char **argv)
|
---|
| 1901 | {
|
---|
| 1902 | char buff[BUFSIZ];
|
---|
| 1903 | char *prompt =
|
---|
| 1904 | #if defined(CONFIG_FEATURE_SH_FANCY_PROMPT)
|
---|
| 1905 | "\\[\\033[32;1m\\]\\u@\\[\\x1b[33;1m\\]\\h:\
|
---|
| 1906 | \\[\\033[34;1m\\]\\w\\[\\033[35;1m\\] \
|
---|
| 1907 | \\!\\[\\e[36;1m\\]\\$ \\[\\E[0m\\]";
|
---|
| 1908 | #else
|
---|
| 1909 | "% ";
|
---|
| 1910 | #endif
|
---|
| 1911 |
|
---|
| 1912 | #ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT
|
---|
| 1913 | setlocale(LC_ALL, "");
|
---|
| 1914 | #endif
|
---|
| 1915 | while(1) {
|
---|
| 1916 | int l;
|
---|
| 1917 | l = cmdedit_read_input(prompt, buff);
|
---|
| 1918 | if(l > 0 && buff[l-1] == '\n') {
|
---|
| 1919 | buff[l-1] = 0;
|
---|
| 1920 | printf("*** cmdedit_read_input() returned line =%s=\n", buff);
|
---|
| 1921 | } else {
|
---|
| 1922 | break;
|
---|
| 1923 | }
|
---|
| 1924 | }
|
---|
| 1925 | printf("*** cmdedit_read_input() detect ^D\n");
|
---|
| 1926 | return 0;
|
---|
| 1927 | }
|
---|
| 1928 |
|
---|
| 1929 | #endif /* TEST */
|
---|