[1765] | 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 | Usage and known bugs:
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| 19 | Terminal key codes are not extensive, and more will probably
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| 20 | need to be added. This version was created on Debian GNU/Linux 2.x.
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| 21 | Delete, Backspace, Home, End, and the arrow keys were tested
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| 22 | to work in an Xterm and console. Ctrl-A also works as Home.
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| 23 | Ctrl-E also works as End.
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| 24 |
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| 25 | Small bugs (simple effect):
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| 26 | - not true viewing if terminal size (x*y symbols) less
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| 27 | size (prompt + editor's line + 2 symbols)
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| 28 | - not true viewing if length prompt less terminal width
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| 29 | */
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| 30 |
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| 31 | #include "libbb.h"
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| 32 |
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| 33 |
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| 34 | /* FIXME: obsolete CONFIG item? */
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| 35 | #define ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT 0
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| 36 |
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| 37 |
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| 38 | #ifdef TEST
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| 39 |
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| 40 | #define ENABLE_FEATURE_EDITING 0
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| 41 | #define ENABLE_FEATURE_TAB_COMPLETION 0
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| 42 | #define ENABLE_FEATURE_USERNAME_COMPLETION 0
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| 43 | #define ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT 0
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| 44 | #define ENABLE_FEATURE_CLEAN_UP 0
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| 45 |
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| 46 | #endif /* TEST */
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| 47 |
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| 48 |
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| 49 | /* Entire file (except TESTing part) sits inside this #if */
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| 50 | #if ENABLE_FEATURE_EDITING
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| 51 |
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| 52 | #if ENABLE_LOCALE_SUPPORT
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| 53 | #define Isprint(c) isprint(c)
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| 54 | #else
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| 55 | #define Isprint(c) ((c) >= ' ' && (c) != ((unsigned char)'\233'))
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| 56 | #endif
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| 57 |
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| 58 | #define ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR \
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| 59 | (ENABLE_FEATURE_USERNAME_COMPLETION || ENABLE_FEATURE_EDITING_FANCY_PROMPT)
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| 60 |
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| 61 | enum { MAX_LINELEN = CONFIG_FEATURE_EDITING_MAX_LEN };
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| 62 |
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| 63 | static line_input_t *state;
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| 64 |
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| 65 | static struct termios initial_settings, new_settings;
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| 66 |
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| 67 | static volatile unsigned cmdedit_termw = 80; /* actual terminal width */
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| 68 |
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| 69 | static int cmdedit_x; /* real x terminal position */
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| 70 | static int cmdedit_y; /* pseudoreal y terminal position */
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| 71 | static int cmdedit_prmt_len; /* length of prompt (without colors etc) */
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| 72 |
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| 73 | static unsigned cursor;
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| 74 | static unsigned command_len;
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| 75 | static char *command_ps;
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| 76 | static const char *cmdedit_prompt;
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| 77 |
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| 78 | #if ENABLE_FEATURE_EDITING_FANCY_PROMPT
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| 79 | static char *hostname_buf;
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| 80 | static int num_ok_lines = 1;
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| 81 | #endif
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| 82 |
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| 83 | #if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
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| 84 | static const char null_str[] = "";
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| 85 | static char *user_buf;
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| 86 | static char *home_pwd_buf = (char*)null_str;
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| 87 | #endif
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| 88 |
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| 89 | /* Put 'command_ps[cursor]', cursor++.
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| 90 | * Advance cursor on screen. If we reached right margin, scroll text up
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| 91 | * and remove terminal margin effect by printing 'next_char' */
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| 92 | static void cmdedit_set_out_char(int next_char)
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| 93 | {
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| 94 | int c = (unsigned char)command_ps[cursor];
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| 95 |
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| 96 | if (c == '\0') {
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| 97 | /* erase character after end of input string */
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| 98 | c = ' ';
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| 99 | }
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| 100 | #if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
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| 101 | /* Display non-printable characters in reverse */
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| 102 | if (!Isprint(c)) {
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| 103 | if (c >= 128)
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| 104 | c -= 128;
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| 105 | if (c < ' ')
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| 106 | c += '@';
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| 107 | if (c == 127)
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| 108 | c = '?';
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| 109 | printf("\033[7m%c\033[0m", c);
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| 110 | } else
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| 111 | #endif
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| 112 | {
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| 113 | if (initial_settings.c_lflag & ECHO)
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| 114 | putchar(c);
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| 115 | }
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| 116 | if (++cmdedit_x >= cmdedit_termw) {
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| 117 | /* terminal is scrolled down */
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| 118 | cmdedit_y++;
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| 119 | cmdedit_x = 0;
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| 120 | /* destroy "(auto)margin" */
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| 121 | putchar(next_char);
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| 122 | putchar('\b');
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| 123 | }
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| 124 | // Huh? What if command_ps[cursor] == '\0' (we are at the end already?)
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| 125 | cursor++;
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| 126 | }
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| 127 |
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| 128 | /* Move to end of line (by printing all chars till the end) */
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| 129 | static void input_end(void)
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| 130 | {
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| 131 | while (cursor < command_len)
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| 132 | cmdedit_set_out_char(' ');
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| 133 | }
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| 134 |
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| 135 | /* Go to the next line */
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| 136 | static void goto_new_line(void)
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| 137 | {
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| 138 | input_end();
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| 139 | if (cmdedit_x)
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| 140 | putchar('\n');
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| 141 | }
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| 142 |
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| 143 |
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| 144 | static void out1str(const char *s)
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| 145 | {
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| 146 | if (s)
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| 147 | fputs(s, stdout);
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| 148 | }
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| 149 |
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| 150 | static void beep(void)
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| 151 | {
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| 152 | putchar('\007');
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| 153 | }
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| 154 |
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| 155 | /* Move back one character */
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| 156 | /* (optimized for slow terminals) */
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| 157 | static void input_backward(unsigned num)
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| 158 | {
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| 159 | int count_y;
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| 160 |
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| 161 | if (num > cursor)
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| 162 | num = cursor;
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| 163 | if (!num)
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| 164 | return;
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| 165 | cursor -= num;
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| 166 |
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| 167 | if (cmdedit_x >= num) {
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| 168 | cmdedit_x -= num;
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| 169 | if (num <= 4) {
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| 170 | printf("\b\b\b\b" + (4-num));
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| 171 | return;
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| 172 | }
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| 173 | printf("\033[%uD", num);
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| 174 | return;
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| 175 | }
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| 176 |
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| 177 | /* Need to go one or more lines up */
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| 178 | num -= cmdedit_x;
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| 179 | count_y = 1 + (num / cmdedit_termw);
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| 180 | cmdedit_y -= count_y;
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| 181 | cmdedit_x = cmdedit_termw * count_y - num;
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| 182 | /* go to 1st column; go up; go to correct column */
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| 183 | printf("\r" "\033[%dA" "\033[%dC", count_y, cmdedit_x);
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| 184 | }
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| 185 |
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| 186 | static void put_prompt(void)
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| 187 | {
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| 188 | out1str(cmdedit_prompt);
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| 189 | cmdedit_x = cmdedit_prmt_len;
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| 190 | cursor = 0;
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| 191 | // Huh? what if cmdedit_prmt_len >= width?
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| 192 | cmdedit_y = 0; /* new quasireal y */
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| 193 | }
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| 194 |
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| 195 | /* draw prompt, editor line, and clear tail */
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| 196 | static void redraw(int y, int back_cursor)
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| 197 | {
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| 198 | if (y > 0) /* up to start y */
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| 199 | printf("\033[%dA", y);
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| 200 | putchar('\r');
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| 201 | put_prompt();
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| 202 | input_end(); /* rewrite */
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| 203 | printf("\033[J"); /* erase after cursor */
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| 204 | input_backward(back_cursor);
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| 205 | }
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| 206 |
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| 207 | #if ENABLE_FEATURE_EDITING_VI
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| 208 | #define DELBUFSIZ 128
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| 209 | static char *delbuf; /* a (malloced) place to store deleted characters */
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| 210 | static char *delp;
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| 211 | static char newdelflag; /* whether delbuf should be reused yet */
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| 212 | #endif
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| 213 |
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| 214 | /* Delete the char in front of the cursor, optionally saving it
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| 215 | * for later putback */
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| 216 | static void input_delete(int save)
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| 217 | {
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| 218 | int j = cursor;
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| 219 |
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| 220 | if (j == command_len)
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| 221 | return;
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| 222 |
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| 223 | #if ENABLE_FEATURE_EDITING_VI
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| 224 | if (save) {
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| 225 | if (newdelflag) {
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| 226 | if (!delbuf)
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| 227 | delbuf = malloc(DELBUFSIZ);
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| 228 | /* safe if malloc fails */
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| 229 | delp = delbuf;
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| 230 | newdelflag = 0;
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| 231 | }
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| 232 | if (delbuf && (delp - delbuf < DELBUFSIZ))
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| 233 | *delp++ = command_ps[j];
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| 234 | }
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| 235 | #endif
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| 236 |
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| 237 | strcpy(command_ps + j, command_ps + j + 1);
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| 238 | command_len--;
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| 239 | input_end(); /* rewrite new line */
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| 240 | cmdedit_set_out_char(' '); /* erase char */
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| 241 | input_backward(cursor - j); /* back to old pos cursor */
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| 242 | }
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| 243 |
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| 244 | #if ENABLE_FEATURE_EDITING_VI
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| 245 | static void put(void)
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| 246 | {
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| 247 | int ocursor;
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| 248 | int j = delp - delbuf;
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| 249 |
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| 250 | if (j == 0)
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| 251 | return;
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| 252 | ocursor = cursor;
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| 253 | /* open hole and then fill it */
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| 254 | memmove(command_ps + cursor + j, command_ps + cursor, command_len - cursor + 1);
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| 255 | strncpy(command_ps + cursor, delbuf, j);
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| 256 | command_len += j;
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| 257 | input_end(); /* rewrite new line */
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| 258 | input_backward(cursor - ocursor - j + 1); /* at end of new text */
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| 259 | }
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| 260 | #endif
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| 261 |
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| 262 | /* Delete the char in back of the cursor */
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| 263 | static void input_backspace(void)
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| 264 | {
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| 265 | if (cursor > 0) {
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| 266 | input_backward(1);
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| 267 | input_delete(0);
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| 268 | }
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| 269 | }
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| 270 |
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| 271 | /* Move forward one character */
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| 272 | static void input_forward(void)
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| 273 | {
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| 274 | if (cursor < command_len)
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| 275 | cmdedit_set_out_char(command_ps[cursor + 1]);
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| 276 | }
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| 277 |
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| 278 |
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| 279 | #if ENABLE_FEATURE_TAB_COMPLETION
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| 280 |
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| 281 | static char **matches;
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| 282 | static unsigned num_matches;
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| 283 |
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| 284 | static void free_tab_completion_data(void)
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| 285 | {
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| 286 | if (matches) {
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| 287 | while (num_matches)
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| 288 | free(matches[--num_matches]);
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| 289 | free(matches);
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| 290 | matches = NULL;
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| 291 | }
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| 292 | }
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| 293 |
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| 294 | static void add_match(char *matched)
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| 295 | {
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| 296 | int nm = num_matches;
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| 297 | int nm1 = nm + 1;
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| 298 |
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| 299 | matches = xrealloc(matches, nm1 * sizeof(char *));
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| 300 | matches[nm] = matched;
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| 301 | num_matches++;
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| 302 | }
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| 303 |
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| 304 | #if ENABLE_FEATURE_USERNAME_COMPLETION
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| 305 | static void username_tab_completion(char *ud, char *with_shash_flg)
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| 306 | {
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| 307 | struct passwd *entry;
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| 308 | int userlen;
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| 309 |
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| 310 | ud++; /* ~user/... to user/... */
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| 311 | userlen = strlen(ud);
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| 312 |
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| 313 | if (with_shash_flg) { /* "~/..." or "~user/..." */
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| 314 | char *sav_ud = ud - 1;
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| 315 | char *home = NULL;
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| 316 | char *temp;
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| 317 |
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| 318 | if (*ud == '/') { /* "~/..." */
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| 319 | home = home_pwd_buf;
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| 320 | } else {
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| 321 | /* "~user/..." */
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| 322 | temp = strchr(ud, '/');
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| 323 | *temp = 0; /* ~user\0 */
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| 324 | entry = getpwnam(ud);
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| 325 | *temp = '/'; /* restore ~user/... */
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| 326 | ud = temp;
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| 327 | if (entry)
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| 328 | home = entry->pw_dir;
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| 329 | }
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| 330 | if (home) {
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| 331 | if ((userlen + strlen(home) + 1) < MAX_LINELEN) {
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| 332 | char temp2[MAX_LINELEN]; /* argument size */
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| 333 |
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| 334 | /* /home/user/... */
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| 335 | sprintf(temp2, "%s%s", home, ud);
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| 336 | strcpy(sav_ud, temp2);
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| 337 | }
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| 338 | }
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| 339 | } else {
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| 340 | /* "~[^/]*" */
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| 341 | /* Using _r function to avoid pulling in static buffers */
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| 342 | char line_buff[256];
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| 343 | struct passwd pwd;
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| 344 | struct passwd *result;
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| 345 |
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| 346 | setpwent();
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| 347 | while (!getpwent_r(&pwd, line_buff, sizeof(line_buff), &result)) {
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| 348 | /* Null usernames should result in all users as possible completions. */
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| 349 | if (/*!userlen || */ strncmp(ud, pwd.pw_name, userlen) == 0) {
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| 350 | add_match(xasprintf("~%s/", pwd.pw_name));
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| 351 | }
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| 352 | }
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| 353 | endpwent();
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| 354 | }
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| 355 | }
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| 356 | #endif /* FEATURE_COMMAND_USERNAME_COMPLETION */
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| 357 |
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| 358 | enum {
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| 359 | FIND_EXE_ONLY = 0,
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| 360 | FIND_DIR_ONLY = 1,
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| 361 | FIND_FILE_ONLY = 2,
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| 362 | };
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| 363 |
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| 364 | static int path_parse(char ***p, int flags)
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| 365 | {
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| 366 | int npth;
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| 367 | const char *pth;
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| 368 | char *tmp;
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| 369 | char **res;
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| 370 |
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| 371 | /* if not setenv PATH variable, to search cur dir "." */
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| 372 | if (flags != FIND_EXE_ONLY)
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| 373 | return 1;
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| 374 |
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| 375 | if (state->flags & WITH_PATH_LOOKUP)
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| 376 | pth = state->path_lookup;
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| 377 | else
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| 378 | pth = getenv("PATH");
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| 379 | /* PATH=<empty> or PATH=:<empty> */
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| 380 | if (!pth || !pth[0] || LONE_CHAR(pth, ':'))
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| 381 | return 1;
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| 382 |
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| 383 | tmp = (char*)pth;
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| 384 | npth = 1; /* path component count */
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| 385 | while (1) {
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| 386 | tmp = strchr(tmp, ':');
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| 387 | if (!tmp)
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| 388 | break;
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| 389 | if (*++tmp == '\0')
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| 390 | break; /* :<empty> */
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| 391 | npth++;
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| 392 | }
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| 393 |
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| 394 | res = xmalloc(npth * sizeof(char*));
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| 395 | res[0] = tmp = xstrdup(pth);
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| 396 | npth = 1;
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| 397 | while (1) {
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| 398 | tmp = strchr(tmp, ':');
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| 399 | if (!tmp)
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| 400 | break;
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| 401 | *tmp++ = '\0'; /* ':' -> '\0' */
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| 402 | if (*tmp == '\0')
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| 403 | break; /* :<empty> */
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| 404 | res[npth++] = tmp;
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| 405 | }
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| 406 | *p = res;
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| 407 | return npth;
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| 408 | }
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| 409 |
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| 410 | static void exe_n_cwd_tab_completion(char *command, int type)
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| 411 | {
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| 412 | DIR *dir;
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| 413 | struct dirent *next;
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| 414 | char dirbuf[MAX_LINELEN];
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| 415 | struct stat st;
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| 416 | char *path1[1];
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| 417 | char **paths = path1;
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| 418 | int npaths;
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| 419 | int i;
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| 420 | char *found;
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| 421 | char *pfind = strrchr(command, '/');
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| 422 |
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| 423 | npaths = 1;
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| 424 | path1[0] = (char*)".";
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| 425 |
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| 426 | if (pfind == NULL) {
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| 427 | /* no dir, if flags==EXE_ONLY - get paths, else "." */
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| 428 | npaths = path_parse(&paths, type);
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| 429 | pfind = command;
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| 430 | } else {
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| 431 | /* dirbuf = ".../.../.../" */
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| 432 | safe_strncpy(dirbuf, command, (pfind - command) + 2);
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| 433 | #if ENABLE_FEATURE_USERNAME_COMPLETION
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| 434 | if (dirbuf[0] == '~') /* ~/... or ~user/... */
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| 435 | username_tab_completion(dirbuf, dirbuf);
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| 436 | #endif
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| 437 | paths[0] = dirbuf;
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| 438 | /* point to 'l' in "..../last_component" */
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| 439 | pfind++;
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| 440 | }
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| 441 |
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| 442 | for (i = 0; i < npaths; i++) {
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| 443 | dir = opendir(paths[i]);
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| 444 | if (!dir) /* Don't print an error */
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| 445 | continue;
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| 446 |
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| 447 | while ((next = readdir(dir)) != NULL) {
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| 448 | int len1;
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| 449 | const char *str_found = next->d_name;
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| 450 |
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| 451 | /* matched? */
|
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| 452 | if (strncmp(str_found, pfind, strlen(pfind)))
|
---|
| 453 | continue;
|
---|
| 454 | /* not see .name without .match */
|
---|
| 455 | if (*str_found == '.' && *pfind == 0) {
|
---|
| 456 | if (NOT_LONE_CHAR(paths[i], '/') || str_found[1])
|
---|
| 457 | continue;
|
---|
| 458 | str_found = ""; /* only "/" */
|
---|
| 459 | }
|
---|
| 460 | found = concat_path_file(paths[i], str_found);
|
---|
| 461 | /* hmm, remover in progress? */
|
---|
| 462 | if (stat(found, &st) < 0)
|
---|
| 463 | goto cont;
|
---|
| 464 | /* find with dirs? */
|
---|
| 465 | if (paths[i] != dirbuf)
|
---|
| 466 | strcpy(found, next->d_name); /* only name */
|
---|
| 467 |
|
---|
| 468 | len1 = strlen(found);
|
---|
| 469 | found = xrealloc(found, len1 + 2);
|
---|
| 470 | found[len1] = '\0';
|
---|
| 471 | found[len1+1] = '\0';
|
---|
| 472 |
|
---|
| 473 | if (S_ISDIR(st.st_mode)) {
|
---|
| 474 | /* name is directory */
|
---|
| 475 | if (found[len1-1] != '/') {
|
---|
| 476 | found[len1] = '/';
|
---|
| 477 | }
|
---|
| 478 | } else {
|
---|
| 479 | /* not put found file if search only dirs for cd */
|
---|
| 480 | if (type == FIND_DIR_ONLY)
|
---|
| 481 | goto cont;
|
---|
| 482 | }
|
---|
| 483 | /* Add it to the list */
|
---|
| 484 | add_match(found);
|
---|
| 485 | continue;
|
---|
| 486 | cont:
|
---|
| 487 | free(found);
|
---|
| 488 | }
|
---|
| 489 | closedir(dir);
|
---|
| 490 | }
|
---|
| 491 | if (paths != path1) {
|
---|
| 492 | free(paths[0]); /* allocated memory only in first member */
|
---|
| 493 | free(paths);
|
---|
| 494 | }
|
---|
| 495 | }
|
---|
| 496 |
|
---|
| 497 | #define QUOT (UCHAR_MAX+1)
|
---|
| 498 |
|
---|
| 499 | #define collapse_pos(is, in) { \
|
---|
| 500 | memmove(int_buf+(is), int_buf+(in), (MAX_LINELEN+1-(is)-(in))*sizeof(int)); \
|
---|
| 501 | memmove(pos_buf+(is), pos_buf+(in), (MAX_LINELEN+1-(is)-(in))*sizeof(int)); }
|
---|
| 502 |
|
---|
| 503 | static int find_match(char *matchBuf, int *len_with_quotes)
|
---|
| 504 | {
|
---|
| 505 | int i, j;
|
---|
| 506 | int command_mode;
|
---|
| 507 | int c, c2;
|
---|
| 508 | int int_buf[MAX_LINELEN + 1];
|
---|
| 509 | int pos_buf[MAX_LINELEN + 1];
|
---|
| 510 |
|
---|
| 511 | /* set to integer dimension characters and own positions */
|
---|
| 512 | for (i = 0;; i++) {
|
---|
| 513 | int_buf[i] = (unsigned char)matchBuf[i];
|
---|
| 514 | if (int_buf[i] == 0) {
|
---|
| 515 | pos_buf[i] = -1; /* indicator end line */
|
---|
| 516 | break;
|
---|
| 517 | }
|
---|
| 518 | pos_buf[i] = i;
|
---|
| 519 | }
|
---|
| 520 |
|
---|
| 521 | /* mask \+symbol and convert '\t' to ' ' */
|
---|
| 522 | for (i = j = 0; matchBuf[i]; i++, j++)
|
---|
| 523 | if (matchBuf[i] == '\\') {
|
---|
| 524 | collapse_pos(j, j + 1);
|
---|
| 525 | int_buf[j] |= QUOT;
|
---|
| 526 | i++;
|
---|
| 527 | #if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
|
---|
| 528 | if (matchBuf[i] == '\t') /* algorithm equivalent */
|
---|
| 529 | int_buf[j] = ' ' | QUOT;
|
---|
| 530 | #endif
|
---|
| 531 | }
|
---|
| 532 | #if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
|
---|
| 533 | else if (matchBuf[i] == '\t')
|
---|
| 534 | int_buf[j] = ' ';
|
---|
| 535 | #endif
|
---|
| 536 |
|
---|
| 537 | /* mask "symbols" or 'symbols' */
|
---|
| 538 | c2 = 0;
|
---|
| 539 | for (i = 0; int_buf[i]; i++) {
|
---|
| 540 | c = int_buf[i];
|
---|
| 541 | if (c == '\'' || c == '"') {
|
---|
| 542 | if (c2 == 0)
|
---|
| 543 | c2 = c;
|
---|
| 544 | else {
|
---|
| 545 | if (c == c2)
|
---|
| 546 | c2 = 0;
|
---|
| 547 | else
|
---|
| 548 | int_buf[i] |= QUOT;
|
---|
| 549 | }
|
---|
| 550 | } else if (c2 != 0 && c != '$')
|
---|
| 551 | int_buf[i] |= QUOT;
|
---|
| 552 | }
|
---|
| 553 |
|
---|
| 554 | /* skip commands with arguments if line has commands delimiters */
|
---|
| 555 | /* ';' ';;' '&' '|' '&&' '||' but `>&' `<&' `>|' */
|
---|
| 556 | for (i = 0; int_buf[i]; i++) {
|
---|
| 557 | c = int_buf[i];
|
---|
| 558 | c2 = int_buf[i + 1];
|
---|
| 559 | j = i ? int_buf[i - 1] : -1;
|
---|
| 560 | command_mode = 0;
|
---|
| 561 | if (c == ';' || c == '&' || c == '|') {
|
---|
| 562 | command_mode = 1 + (c == c2);
|
---|
| 563 | if (c == '&') {
|
---|
| 564 | if (j == '>' || j == '<')
|
---|
| 565 | command_mode = 0;
|
---|
| 566 | } else if (c == '|' && j == '>')
|
---|
| 567 | command_mode = 0;
|
---|
| 568 | }
|
---|
| 569 | if (command_mode) {
|
---|
| 570 | collapse_pos(0, i + command_mode);
|
---|
| 571 | i = -1; /* hack incremet */
|
---|
| 572 | }
|
---|
| 573 | }
|
---|
| 574 | /* collapse `command...` */
|
---|
| 575 | for (i = 0; int_buf[i]; i++)
|
---|
| 576 | if (int_buf[i] == '`') {
|
---|
| 577 | for (j = i + 1; int_buf[j]; j++)
|
---|
| 578 | if (int_buf[j] == '`') {
|
---|
| 579 | collapse_pos(i, j + 1);
|
---|
| 580 | j = 0;
|
---|
| 581 | break;
|
---|
| 582 | }
|
---|
| 583 | if (j) {
|
---|
| 584 | /* not found close ` - command mode, collapse all previous */
|
---|
| 585 | collapse_pos(0, i + 1);
|
---|
| 586 | break;
|
---|
| 587 | } else
|
---|
| 588 | i--; /* hack incremet */
|
---|
| 589 | }
|
---|
| 590 |
|
---|
| 591 | /* collapse (command...(command...)...) or {command...{command...}...} */
|
---|
| 592 | c = 0; /* "recursive" level */
|
---|
| 593 | c2 = 0;
|
---|
| 594 | for (i = 0; int_buf[i]; i++)
|
---|
| 595 | if (int_buf[i] == '(' || int_buf[i] == '{') {
|
---|
| 596 | if (int_buf[i] == '(')
|
---|
| 597 | c++;
|
---|
| 598 | else
|
---|
| 599 | c2++;
|
---|
| 600 | collapse_pos(0, i + 1);
|
---|
| 601 | i = -1; /* hack incremet */
|
---|
| 602 | }
|
---|
| 603 | for (i = 0; pos_buf[i] >= 0 && (c > 0 || c2 > 0); i++)
|
---|
| 604 | if ((int_buf[i] == ')' && c > 0) || (int_buf[i] == '}' && c2 > 0)) {
|
---|
| 605 | if (int_buf[i] == ')')
|
---|
| 606 | c--;
|
---|
| 607 | else
|
---|
| 608 | c2--;
|
---|
| 609 | collapse_pos(0, i + 1);
|
---|
| 610 | i = -1; /* hack incremet */
|
---|
| 611 | }
|
---|
| 612 |
|
---|
| 613 | /* skip first not quote space */
|
---|
| 614 | for (i = 0; int_buf[i]; i++)
|
---|
| 615 | if (int_buf[i] != ' ')
|
---|
| 616 | break;
|
---|
| 617 | if (i)
|
---|
| 618 | collapse_pos(0, i);
|
---|
| 619 |
|
---|
| 620 | /* set find mode for completion */
|
---|
| 621 | command_mode = FIND_EXE_ONLY;
|
---|
| 622 | for (i = 0; int_buf[i]; i++)
|
---|
| 623 | if (int_buf[i] == ' ' || int_buf[i] == '<' || int_buf[i] == '>') {
|
---|
| 624 | if (int_buf[i] == ' ' && command_mode == FIND_EXE_ONLY
|
---|
| 625 | && matchBuf[pos_buf[0]]=='c'
|
---|
| 626 | && matchBuf[pos_buf[1]]=='d'
|
---|
| 627 | ) {
|
---|
| 628 | command_mode = FIND_DIR_ONLY;
|
---|
| 629 | } else {
|
---|
| 630 | command_mode = FIND_FILE_ONLY;
|
---|
| 631 | break;
|
---|
| 632 | }
|
---|
| 633 | }
|
---|
| 634 | for (i = 0; int_buf[i]; i++)
|
---|
| 635 | /* "strlen" */;
|
---|
| 636 | /* find last word */
|
---|
| 637 | for (--i; i >= 0; i--) {
|
---|
| 638 | c = int_buf[i];
|
---|
| 639 | if (c == ' ' || c == '<' || c == '>' || c == '|' || c == '&') {
|
---|
| 640 | collapse_pos(0, i + 1);
|
---|
| 641 | break;
|
---|
| 642 | }
|
---|
| 643 | }
|
---|
| 644 | /* skip first not quoted '\'' or '"' */
|
---|
| 645 | for (i = 0; int_buf[i] == '\'' || int_buf[i] == '"'; i++)
|
---|
| 646 | /*skip*/;
|
---|
| 647 | /* collapse quote or unquote // or /~ */
|
---|
| 648 | while ((int_buf[i] & ~QUOT) == '/'
|
---|
| 649 | && ((int_buf[i+1] & ~QUOT) == '/' || (int_buf[i+1] & ~QUOT) == '~')
|
---|
| 650 | ) {
|
---|
| 651 | i++;
|
---|
| 652 | }
|
---|
| 653 |
|
---|
| 654 | /* set only match and destroy quotes */
|
---|
| 655 | j = 0;
|
---|
| 656 | for (c = 0; pos_buf[i] >= 0; i++) {
|
---|
| 657 | matchBuf[c++] = matchBuf[pos_buf[i]];
|
---|
| 658 | j = pos_buf[i] + 1;
|
---|
| 659 | }
|
---|
| 660 | matchBuf[c] = 0;
|
---|
| 661 | /* old lenght matchBuf with quotes symbols */
|
---|
| 662 | *len_with_quotes = j ? j - pos_buf[0] : 0;
|
---|
| 663 |
|
---|
| 664 | return command_mode;
|
---|
| 665 | }
|
---|
| 666 |
|
---|
| 667 | /*
|
---|
| 668 | * display by column (original idea from ls applet,
|
---|
| 669 | * very optimized by me :)
|
---|
| 670 | */
|
---|
| 671 | static void showfiles(void)
|
---|
| 672 | {
|
---|
| 673 | int ncols, row;
|
---|
| 674 | int column_width = 0;
|
---|
| 675 | int nfiles = num_matches;
|
---|
| 676 | int nrows = nfiles;
|
---|
| 677 | int l;
|
---|
| 678 |
|
---|
| 679 | /* find the longest file name- use that as the column width */
|
---|
| 680 | for (row = 0; row < nrows; row++) {
|
---|
| 681 | l = strlen(matches[row]);
|
---|
| 682 | if (column_width < l)
|
---|
| 683 | column_width = l;
|
---|
| 684 | }
|
---|
| 685 | column_width += 2; /* min space for columns */
|
---|
| 686 | ncols = cmdedit_termw / column_width;
|
---|
| 687 |
|
---|
| 688 | if (ncols > 1) {
|
---|
| 689 | nrows /= ncols;
|
---|
| 690 | if (nfiles % ncols)
|
---|
| 691 | nrows++; /* round up fractionals */
|
---|
| 692 | } else {
|
---|
| 693 | ncols = 1;
|
---|
| 694 | }
|
---|
| 695 | for (row = 0; row < nrows; row++) {
|
---|
| 696 | int n = row;
|
---|
| 697 | int nc;
|
---|
| 698 |
|
---|
| 699 | for (nc = 1; nc < ncols && n+nrows < nfiles; n += nrows, nc++) {
|
---|
| 700 | printf("%s%-*s", matches[n],
|
---|
| 701 | (int)(column_width - strlen(matches[n])), "");
|
---|
| 702 | }
|
---|
| 703 | printf("%s\n", matches[n]);
|
---|
| 704 | }
|
---|
| 705 | }
|
---|
| 706 |
|
---|
| 707 | static char *add_quote_for_spec_chars(char *found)
|
---|
| 708 | {
|
---|
| 709 | int l = 0;
|
---|
| 710 | char *s = xmalloc((strlen(found) + 1) * 2);
|
---|
| 711 |
|
---|
| 712 | while (*found) {
|
---|
| 713 | if (strchr(" `\"#$%^&*()=+{}[]:;\'|\\<>", *found))
|
---|
| 714 | s[l++] = '\\';
|
---|
| 715 | s[l++] = *found++;
|
---|
| 716 | }
|
---|
| 717 | s[l] = 0;
|
---|
| 718 | return s;
|
---|
| 719 | }
|
---|
| 720 |
|
---|
| 721 | static int match_compare(const void *a, const void *b)
|
---|
| 722 | {
|
---|
| 723 | return strcmp(*(char**)a, *(char**)b);
|
---|
| 724 | }
|
---|
| 725 |
|
---|
| 726 | /* Do TAB completion */
|
---|
| 727 | static void input_tab(int *lastWasTab)
|
---|
| 728 | {
|
---|
| 729 | if (!(state->flags & TAB_COMPLETION))
|
---|
| 730 | return;
|
---|
| 731 |
|
---|
| 732 | if (!*lastWasTab) {
|
---|
| 733 | char *tmp, *tmp1;
|
---|
| 734 | int len_found;
|
---|
| 735 | char matchBuf[MAX_LINELEN];
|
---|
| 736 | int find_type;
|
---|
| 737 | int recalc_pos;
|
---|
| 738 |
|
---|
| 739 | *lastWasTab = TRUE; /* flop trigger */
|
---|
| 740 |
|
---|
| 741 | /* Make a local copy of the string -- up
|
---|
| 742 | * to the position of the cursor */
|
---|
| 743 | tmp = strncpy(matchBuf, command_ps, cursor);
|
---|
| 744 | tmp[cursor] = '\0';
|
---|
| 745 |
|
---|
| 746 | find_type = find_match(matchBuf, &recalc_pos);
|
---|
| 747 |
|
---|
| 748 | /* Free up any memory already allocated */
|
---|
| 749 | free_tab_completion_data();
|
---|
| 750 |
|
---|
| 751 | #if ENABLE_FEATURE_USERNAME_COMPLETION
|
---|
| 752 | /* If the word starts with `~' and there is no slash in the word,
|
---|
| 753 | * then try completing this word as a username. */
|
---|
| 754 | if (state->flags & USERNAME_COMPLETION)
|
---|
| 755 | if (matchBuf[0] == '~' && strchr(matchBuf, '/') == 0)
|
---|
| 756 | username_tab_completion(matchBuf, NULL);
|
---|
| 757 | #endif
|
---|
| 758 | /* Try to match any executable in our path and everything
|
---|
| 759 | * in the current working directory */
|
---|
| 760 | if (!matches)
|
---|
| 761 | exe_n_cwd_tab_completion(matchBuf, find_type);
|
---|
| 762 | /* Sort, then remove any duplicates found */
|
---|
| 763 | if (matches) {
|
---|
| 764 | int i, n = 0;
|
---|
| 765 | qsort(matches, num_matches, sizeof(char*), match_compare);
|
---|
| 766 | for (i = 0; i < num_matches - 1; ++i) {
|
---|
| 767 | if (matches[i] && matches[i+1]) { /* paranoia */
|
---|
| 768 | if (strcmp(matches[i], matches[i+1]) == 0) {
|
---|
| 769 | free(matches[i]);
|
---|
| 770 | matches[i] = NULL; /* paranoia */
|
---|
| 771 | } else {
|
---|
| 772 | matches[n++] = matches[i];
|
---|
| 773 | }
|
---|
| 774 | }
|
---|
| 775 | }
|
---|
| 776 | matches[n] = matches[i];
|
---|
| 777 | num_matches = n + 1;
|
---|
| 778 | }
|
---|
| 779 | /* Did we find exactly one match? */
|
---|
| 780 | if (!matches || num_matches > 1) {
|
---|
| 781 | beep();
|
---|
| 782 | if (!matches)
|
---|
| 783 | return; /* not found */
|
---|
| 784 | /* find minimal match */
|
---|
| 785 | // ash: yet another failure in trying to achieve "we don't die on OOM"
|
---|
| 786 | tmp1 = xstrdup(matches[0]);
|
---|
| 787 | for (tmp = tmp1; *tmp; tmp++)
|
---|
| 788 | for (len_found = 1; len_found < num_matches; len_found++)
|
---|
| 789 | if (matches[len_found][(tmp - tmp1)] != *tmp) {
|
---|
| 790 | *tmp = '\0';
|
---|
| 791 | break;
|
---|
| 792 | }
|
---|
| 793 | if (*tmp1 == '\0') { /* have unique */
|
---|
| 794 | free(tmp1);
|
---|
| 795 | return;
|
---|
| 796 | }
|
---|
| 797 | tmp = add_quote_for_spec_chars(tmp1);
|
---|
| 798 | free(tmp1);
|
---|
| 799 | } else { /* one match */
|
---|
| 800 | tmp = add_quote_for_spec_chars(matches[0]);
|
---|
| 801 | /* for next completion current found */
|
---|
| 802 | *lastWasTab = FALSE;
|
---|
| 803 |
|
---|
| 804 | len_found = strlen(tmp);
|
---|
| 805 | if (tmp[len_found-1] != '/') {
|
---|
| 806 | tmp[len_found] = ' ';
|
---|
| 807 | tmp[len_found+1] = '\0';
|
---|
| 808 | }
|
---|
| 809 | }
|
---|
| 810 | len_found = strlen(tmp);
|
---|
| 811 | /* have space to placed match? */
|
---|
| 812 | if ((len_found - strlen(matchBuf) + command_len) < MAX_LINELEN) {
|
---|
| 813 | /* before word for match */
|
---|
| 814 | command_ps[cursor - recalc_pos] = 0;
|
---|
| 815 | /* save tail line */
|
---|
| 816 | strcpy(matchBuf, command_ps + cursor);
|
---|
| 817 | /* add match */
|
---|
| 818 | strcat(command_ps, tmp);
|
---|
| 819 | /* add tail */
|
---|
| 820 | strcat(command_ps, matchBuf);
|
---|
| 821 | /* back to begin word for match */
|
---|
| 822 | input_backward(recalc_pos);
|
---|
| 823 | /* new pos */
|
---|
| 824 | recalc_pos = cursor + len_found;
|
---|
| 825 | /* new len */
|
---|
| 826 | command_len = strlen(command_ps);
|
---|
| 827 | /* write out the matched command */
|
---|
| 828 | redraw(cmdedit_y, command_len - recalc_pos);
|
---|
| 829 | }
|
---|
| 830 | free(tmp);
|
---|
| 831 | } else {
|
---|
| 832 | /* Ok -- the last char was a TAB. Since they
|
---|
| 833 | * just hit TAB again, print a list of all the
|
---|
| 834 | * available choices... */
|
---|
| 835 | if (matches && num_matches > 0) {
|
---|
| 836 | int sav_cursor = cursor; /* change goto_new_line() */
|
---|
| 837 |
|
---|
| 838 | /* Go to the next line */
|
---|
| 839 | goto_new_line();
|
---|
| 840 | showfiles();
|
---|
| 841 | redraw(0, command_len - sav_cursor);
|
---|
| 842 | }
|
---|
| 843 | }
|
---|
| 844 | }
|
---|
| 845 |
|
---|
| 846 | #else
|
---|
| 847 | #define input_tab(a) ((void)0)
|
---|
| 848 | #endif /* FEATURE_COMMAND_TAB_COMPLETION */
|
---|
| 849 |
|
---|
| 850 |
|
---|
| 851 | #if MAX_HISTORY > 0
|
---|
| 852 |
|
---|
| 853 | /* state->flags is already checked to be nonzero */
|
---|
| 854 | static void get_previous_history(void)
|
---|
| 855 | {
|
---|
| 856 | if (command_ps[0] != '\0' || state->history[state->cur_history] == NULL) {
|
---|
| 857 | free(state->history[state->cur_history]);
|
---|
| 858 | state->history[state->cur_history] = xstrdup(command_ps);
|
---|
| 859 | }
|
---|
| 860 | state->cur_history--;
|
---|
| 861 | }
|
---|
| 862 |
|
---|
| 863 | static int get_next_history(void)
|
---|
| 864 | {
|
---|
| 865 | if (state->flags & DO_HISTORY) {
|
---|
| 866 | int ch = state->cur_history;
|
---|
| 867 | if (ch < state->cnt_history) {
|
---|
| 868 | get_previous_history(); /* save the current history line */
|
---|
| 869 | state->cur_history = ch + 1;
|
---|
| 870 | return state->cur_history;
|
---|
| 871 | }
|
---|
| 872 | }
|
---|
| 873 | beep();
|
---|
| 874 | return 0;
|
---|
| 875 | }
|
---|
| 876 |
|
---|
| 877 | #if ENABLE_FEATURE_EDITING_SAVEHISTORY
|
---|
| 878 | /* state->flags is already checked to be nonzero */
|
---|
| 879 | static void load_history(const char *fromfile)
|
---|
| 880 | {
|
---|
| 881 | FILE *fp;
|
---|
| 882 | int hi;
|
---|
| 883 |
|
---|
| 884 | /* cleanup old */
|
---|
| 885 | for (hi = state->cnt_history; hi > 0;) {
|
---|
| 886 | hi--;
|
---|
| 887 | free(state->history[hi]);
|
---|
| 888 | }
|
---|
| 889 |
|
---|
| 890 | fp = fopen(fromfile, "r");
|
---|
| 891 | if (fp) {
|
---|
| 892 | for (hi = 0; hi < MAX_HISTORY;) {
|
---|
| 893 | char *hl = xmalloc_getline(fp);
|
---|
| 894 | int l;
|
---|
| 895 |
|
---|
| 896 | if (!hl)
|
---|
| 897 | break;
|
---|
| 898 | l = strlen(hl);
|
---|
| 899 | if (l >= MAX_LINELEN)
|
---|
| 900 | hl[MAX_LINELEN-1] = '\0';
|
---|
| 901 | if (l == 0 || hl[0] == ' ') {
|
---|
| 902 | free(hl);
|
---|
| 903 | continue;
|
---|
| 904 | }
|
---|
| 905 | state->history[hi++] = hl;
|
---|
| 906 | }
|
---|
| 907 | fclose(fp);
|
---|
| 908 | }
|
---|
| 909 | state->cur_history = state->cnt_history = hi;
|
---|
| 910 | }
|
---|
| 911 |
|
---|
| 912 | /* state->flags is already checked to be nonzero */
|
---|
| 913 | static void save_history(const char *tofile)
|
---|
| 914 | {
|
---|
| 915 | FILE *fp;
|
---|
| 916 |
|
---|
| 917 | fp = fopen(tofile, "w");
|
---|
| 918 | if (fp) {
|
---|
| 919 | int i;
|
---|
| 920 |
|
---|
| 921 | for (i = 0; i < state->cnt_history; i++) {
|
---|
| 922 | fprintf(fp, "%s\n", state->history[i]);
|
---|
| 923 | }
|
---|
| 924 | fclose(fp);
|
---|
| 925 | }
|
---|
| 926 | }
|
---|
| 927 | #else
|
---|
| 928 | #define load_history(a) ((void)0)
|
---|
| 929 | #define save_history(a) ((void)0)
|
---|
| 930 | #endif /* FEATURE_COMMAND_SAVEHISTORY */
|
---|
| 931 |
|
---|
| 932 | static void remember_in_history(const char *str)
|
---|
| 933 | {
|
---|
| 934 | int i;
|
---|
| 935 |
|
---|
| 936 | if (!(state->flags & DO_HISTORY))
|
---|
| 937 | return;
|
---|
| 938 |
|
---|
| 939 | i = state->cnt_history;
|
---|
| 940 | free(state->history[MAX_HISTORY]);
|
---|
| 941 | state->history[MAX_HISTORY] = NULL;
|
---|
| 942 | /* After max history, remove the oldest command */
|
---|
| 943 | if (i >= MAX_HISTORY) {
|
---|
| 944 | free(state->history[0]);
|
---|
| 945 | for (i = 0; i < MAX_HISTORY-1; i++)
|
---|
| 946 | state->history[i] = state->history[i+1];
|
---|
| 947 | }
|
---|
| 948 | // Maybe "if (!i || strcmp(history[i-1], command) != 0) ..."
|
---|
| 949 | // (i.e. do not save dups?)
|
---|
| 950 | state->history[i++] = xstrdup(str);
|
---|
| 951 | state->cur_history = i;
|
---|
| 952 | state->cnt_history = i;
|
---|
| 953 | #if ENABLE_FEATURE_EDITING_SAVEHISTORY
|
---|
| 954 | if ((state->flags & SAVE_HISTORY) && state->hist_file)
|
---|
| 955 | save_history(state->hist_file);
|
---|
| 956 | #endif
|
---|
| 957 | USE_FEATURE_EDITING_FANCY_PROMPT(num_ok_lines++;)
|
---|
| 958 | }
|
---|
| 959 |
|
---|
| 960 | #else /* MAX_HISTORY == 0 */
|
---|
| 961 | #define remember_in_history(a) ((void)0)
|
---|
| 962 | #endif /* MAX_HISTORY */
|
---|
| 963 |
|
---|
| 964 |
|
---|
| 965 | /*
|
---|
| 966 | * This function is used to grab a character buffer
|
---|
| 967 | * from the input file descriptor and allows you to
|
---|
| 968 | * a string with full command editing (sort of like
|
---|
| 969 | * a mini readline).
|
---|
| 970 | *
|
---|
| 971 | * The following standard commands are not implemented:
|
---|
| 972 | * ESC-b -- Move back one word
|
---|
| 973 | * ESC-f -- Move forward one word
|
---|
| 974 | * ESC-d -- Delete back one word
|
---|
| 975 | * ESC-h -- Delete forward one word
|
---|
| 976 | * CTL-t -- Transpose two characters
|
---|
| 977 | *
|
---|
| 978 | * Minimalist vi-style command line editing available if configured.
|
---|
| 979 | * vi mode implemented 2005 by Paul Fox <pgf@foxharp.boston.ma.us>
|
---|
| 980 | */
|
---|
| 981 |
|
---|
| 982 | #if ENABLE_FEATURE_EDITING_VI
|
---|
| 983 | static void
|
---|
| 984 | vi_Word_motion(char *command, int eat)
|
---|
| 985 | {
|
---|
| 986 | while (cursor < command_len && !isspace(command[cursor]))
|
---|
| 987 | input_forward();
|
---|
| 988 | if (eat) while (cursor < command_len && isspace(command[cursor]))
|
---|
| 989 | input_forward();
|
---|
| 990 | }
|
---|
| 991 |
|
---|
| 992 | static void
|
---|
| 993 | vi_word_motion(char *command, int eat)
|
---|
| 994 | {
|
---|
| 995 | if (isalnum(command[cursor]) || command[cursor] == '_') {
|
---|
| 996 | while (cursor < command_len
|
---|
| 997 | && (isalnum(command[cursor+1]) || command[cursor+1] == '_'))
|
---|
| 998 | input_forward();
|
---|
| 999 | } else if (ispunct(command[cursor])) {
|
---|
| 1000 | while (cursor < command_len && ispunct(command[cursor+1]))
|
---|
| 1001 | input_forward();
|
---|
| 1002 | }
|
---|
| 1003 |
|
---|
| 1004 | if (cursor < command_len)
|
---|
| 1005 | input_forward();
|
---|
| 1006 |
|
---|
| 1007 | if (eat && cursor < command_len && isspace(command[cursor]))
|
---|
| 1008 | while (cursor < command_len && isspace(command[cursor]))
|
---|
| 1009 | input_forward();
|
---|
| 1010 | }
|
---|
| 1011 |
|
---|
| 1012 | static void
|
---|
| 1013 | vi_End_motion(char *command)
|
---|
| 1014 | {
|
---|
| 1015 | input_forward();
|
---|
| 1016 | while (cursor < command_len && isspace(command[cursor]))
|
---|
| 1017 | input_forward();
|
---|
| 1018 | while (cursor < command_len-1 && !isspace(command[cursor+1]))
|
---|
| 1019 | input_forward();
|
---|
| 1020 | }
|
---|
| 1021 |
|
---|
| 1022 | static void
|
---|
| 1023 | vi_end_motion(char *command)
|
---|
| 1024 | {
|
---|
| 1025 | if (cursor >= command_len-1)
|
---|
| 1026 | return;
|
---|
| 1027 | input_forward();
|
---|
| 1028 | while (cursor < command_len-1 && isspace(command[cursor]))
|
---|
| 1029 | input_forward();
|
---|
| 1030 | if (cursor >= command_len-1)
|
---|
| 1031 | return;
|
---|
| 1032 | if (isalnum(command[cursor]) || command[cursor] == '_') {
|
---|
| 1033 | while (cursor < command_len-1
|
---|
| 1034 | && (isalnum(command[cursor+1]) || command[cursor+1] == '_')
|
---|
| 1035 | ) {
|
---|
| 1036 | input_forward();
|
---|
| 1037 | }
|
---|
| 1038 | } else if (ispunct(command[cursor])) {
|
---|
| 1039 | while (cursor < command_len-1 && ispunct(command[cursor+1]))
|
---|
| 1040 | input_forward();
|
---|
| 1041 | }
|
---|
| 1042 | }
|
---|
| 1043 |
|
---|
| 1044 | static void
|
---|
| 1045 | vi_Back_motion(char *command)
|
---|
| 1046 | {
|
---|
| 1047 | while (cursor > 0 && isspace(command[cursor-1]))
|
---|
| 1048 | input_backward(1);
|
---|
| 1049 | while (cursor > 0 && !isspace(command[cursor-1]))
|
---|
| 1050 | input_backward(1);
|
---|
| 1051 | }
|
---|
| 1052 |
|
---|
| 1053 | static void
|
---|
| 1054 | vi_back_motion(char *command)
|
---|
| 1055 | {
|
---|
| 1056 | if (cursor <= 0)
|
---|
| 1057 | return;
|
---|
| 1058 | input_backward(1);
|
---|
| 1059 | while (cursor > 0 && isspace(command[cursor]))
|
---|
| 1060 | input_backward(1);
|
---|
| 1061 | if (cursor <= 0)
|
---|
| 1062 | return;
|
---|
| 1063 | if (isalnum(command[cursor]) || command[cursor] == '_') {
|
---|
| 1064 | while (cursor > 0
|
---|
| 1065 | && (isalnum(command[cursor-1]) || command[cursor-1] == '_')
|
---|
| 1066 | ) {
|
---|
| 1067 | input_backward(1);
|
---|
| 1068 | }
|
---|
| 1069 | } else if (ispunct(command[cursor])) {
|
---|
| 1070 | while (cursor > 0 && ispunct(command[cursor-1]))
|
---|
| 1071 | input_backward(1);
|
---|
| 1072 | }
|
---|
| 1073 | }
|
---|
| 1074 | #endif
|
---|
| 1075 |
|
---|
| 1076 |
|
---|
| 1077 | /*
|
---|
| 1078 | * read_line_input and its helpers
|
---|
| 1079 | */
|
---|
| 1080 |
|
---|
| 1081 | #if !ENABLE_FEATURE_EDITING_FANCY_PROMPT
|
---|
| 1082 | static void parse_prompt(const char *prmt_ptr)
|
---|
| 1083 | {
|
---|
| 1084 | cmdedit_prompt = prmt_ptr;
|
---|
| 1085 | cmdedit_prmt_len = strlen(prmt_ptr);
|
---|
| 1086 | put_prompt();
|
---|
| 1087 | }
|
---|
| 1088 | #else
|
---|
| 1089 | static void parse_prompt(const char *prmt_ptr)
|
---|
| 1090 | {
|
---|
| 1091 | int prmt_len = 0;
|
---|
| 1092 | size_t cur_prmt_len = 0;
|
---|
| 1093 | char flg_not_length = '[';
|
---|
| 1094 | char *prmt_mem_ptr = xzalloc(1);
|
---|
| 1095 | char *pwd_buf = xrealloc_getcwd_or_warn(NULL);
|
---|
| 1096 | char buf2[PATH_MAX + 1];
|
---|
| 1097 | char buf[2];
|
---|
| 1098 | char c;
|
---|
| 1099 | char *pbuf;
|
---|
| 1100 |
|
---|
| 1101 | cmdedit_prmt_len = 0;
|
---|
| 1102 |
|
---|
| 1103 | if (!pwd_buf) {
|
---|
| 1104 | pwd_buf = (char *)bb_msg_unknown;
|
---|
| 1105 | }
|
---|
| 1106 |
|
---|
| 1107 | while (*prmt_ptr) {
|
---|
| 1108 | pbuf = buf;
|
---|
| 1109 | pbuf[1] = 0;
|
---|
| 1110 | c = *prmt_ptr++;
|
---|
| 1111 | if (c == '\\') {
|
---|
| 1112 | const char *cp = prmt_ptr;
|
---|
| 1113 | int l;
|
---|
| 1114 |
|
---|
| 1115 | c = bb_process_escape_sequence(&prmt_ptr);
|
---|
| 1116 | if (prmt_ptr == cp) {
|
---|
| 1117 | if (*cp == 0)
|
---|
| 1118 | break;
|
---|
| 1119 | c = *prmt_ptr++;
|
---|
| 1120 | switch (c) {
|
---|
| 1121 | #if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
|
---|
| 1122 | case 'u':
|
---|
| 1123 | pbuf = user_buf ? user_buf : (char*)"";
|
---|
| 1124 | break;
|
---|
| 1125 | #endif
|
---|
| 1126 | case 'h':
|
---|
| 1127 | pbuf = hostname_buf;
|
---|
| 1128 | if (!pbuf) {
|
---|
| 1129 | pbuf = xzalloc(256);
|
---|
| 1130 | if (gethostname(pbuf, 255) < 0) {
|
---|
| 1131 | strcpy(pbuf, "?");
|
---|
| 1132 | } else {
|
---|
| 1133 | char *s = strchr(pbuf, '.');
|
---|
| 1134 | if (s)
|
---|
| 1135 | *s = '\0';
|
---|
| 1136 | }
|
---|
| 1137 | hostname_buf = pbuf;
|
---|
| 1138 | }
|
---|
| 1139 | break;
|
---|
| 1140 | case '$':
|
---|
| 1141 | c = (geteuid() == 0 ? '#' : '$');
|
---|
| 1142 | break;
|
---|
| 1143 | #if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
|
---|
| 1144 | case 'w':
|
---|
| 1145 | pbuf = pwd_buf;
|
---|
| 1146 | l = strlen(home_pwd_buf);
|
---|
| 1147 | if (l != 0
|
---|
| 1148 | && strncmp(home_pwd_buf, pbuf, l) == 0
|
---|
| 1149 | && (pbuf[l]=='/' || pbuf[l]=='\0')
|
---|
| 1150 | && strlen(pwd_buf+l)<PATH_MAX
|
---|
| 1151 | ) {
|
---|
| 1152 | pbuf = buf2;
|
---|
| 1153 | *pbuf = '~';
|
---|
| 1154 | strcpy(pbuf+1, pwd_buf+l);
|
---|
| 1155 | }
|
---|
| 1156 | break;
|
---|
| 1157 | #endif
|
---|
| 1158 | case 'W':
|
---|
| 1159 | pbuf = pwd_buf;
|
---|
| 1160 | cp = strrchr(pbuf, '/');
|
---|
| 1161 | if (cp != NULL && cp != pbuf)
|
---|
| 1162 | pbuf += (cp-pbuf) + 1;
|
---|
| 1163 | break;
|
---|
| 1164 | case '!':
|
---|
| 1165 | pbuf = buf2;
|
---|
| 1166 | snprintf(buf2, sizeof(buf2), "%d", num_ok_lines);
|
---|
| 1167 | break;
|
---|
| 1168 | case 'e': case 'E': /* \e \E = \033 */
|
---|
| 1169 | c = '\033';
|
---|
| 1170 | break;
|
---|
| 1171 | case 'x': case 'X':
|
---|
| 1172 | for (l = 0; l < 3;) {
|
---|
| 1173 | int h;
|
---|
| 1174 | buf2[l++] = *prmt_ptr;
|
---|
| 1175 | buf2[l] = 0;
|
---|
| 1176 | h = strtol(buf2, &pbuf, 16);
|
---|
| 1177 | if (h > UCHAR_MAX || (pbuf - buf2) < l) {
|
---|
| 1178 | l--;
|
---|
| 1179 | break;
|
---|
| 1180 | }
|
---|
| 1181 | prmt_ptr++;
|
---|
| 1182 | }
|
---|
| 1183 | buf2[l] = 0;
|
---|
| 1184 | c = (char)strtol(buf2, NULL, 16);
|
---|
| 1185 | if (c == 0)
|
---|
| 1186 | c = '?';
|
---|
| 1187 | pbuf = buf;
|
---|
| 1188 | break;
|
---|
| 1189 | case '[': case ']':
|
---|
| 1190 | if (c == flg_not_length) {
|
---|
| 1191 | flg_not_length = flg_not_length == '[' ? ']' : '[';
|
---|
| 1192 | continue;
|
---|
| 1193 | }
|
---|
| 1194 | break;
|
---|
| 1195 | }
|
---|
| 1196 | }
|
---|
| 1197 | }
|
---|
| 1198 | if (pbuf == buf)
|
---|
| 1199 | *pbuf = c;
|
---|
| 1200 | cur_prmt_len = strlen(pbuf);
|
---|
| 1201 | prmt_len += cur_prmt_len;
|
---|
| 1202 | if (flg_not_length != ']')
|
---|
| 1203 | cmdedit_prmt_len += cur_prmt_len;
|
---|
| 1204 | prmt_mem_ptr = strcat(xrealloc(prmt_mem_ptr, prmt_len+1), pbuf);
|
---|
| 1205 | }
|
---|
| 1206 | if (pwd_buf != (char *)bb_msg_unknown)
|
---|
| 1207 | free(pwd_buf);
|
---|
| 1208 | cmdedit_prompt = prmt_mem_ptr;
|
---|
| 1209 | put_prompt();
|
---|
| 1210 | }
|
---|
| 1211 | #endif
|
---|
| 1212 |
|
---|
| 1213 | #define setTermSettings(fd, argp) tcsetattr(fd, TCSANOW, argp)
|
---|
| 1214 | #define getTermSettings(fd, argp) tcgetattr(fd, argp);
|
---|
| 1215 |
|
---|
| 1216 | static sighandler_t previous_SIGWINCH_handler;
|
---|
| 1217 |
|
---|
| 1218 | static void cmdedit_setwidth(unsigned w, int redraw_flg)
|
---|
| 1219 | {
|
---|
| 1220 | cmdedit_termw = w;
|
---|
| 1221 | if (redraw_flg) {
|
---|
| 1222 | /* new y for current cursor */
|
---|
| 1223 | int new_y = (cursor + cmdedit_prmt_len) / w;
|
---|
| 1224 | /* redraw */
|
---|
| 1225 | redraw((new_y >= cmdedit_y ? new_y : cmdedit_y), command_len - cursor);
|
---|
| 1226 | fflush(stdout);
|
---|
| 1227 | }
|
---|
| 1228 | }
|
---|
| 1229 |
|
---|
| 1230 | static void win_changed(int nsig)
|
---|
| 1231 | {
|
---|
| 1232 | int width;
|
---|
| 1233 | get_terminal_width_height(0, &width, NULL);
|
---|
| 1234 | cmdedit_setwidth(width, nsig /* - just a yes/no flag */);
|
---|
| 1235 | if (nsig == SIGWINCH)
|
---|
| 1236 | signal(SIGWINCH, win_changed); /* rearm ourself */
|
---|
| 1237 | }
|
---|
| 1238 |
|
---|
| 1239 | /*
|
---|
| 1240 | * The emacs and vi modes share much of the code in the big
|
---|
| 1241 | * command loop. Commands entered when in vi's command mode (aka
|
---|
| 1242 | * "escape mode") get an extra bit added to distinguish them --
|
---|
| 1243 | * this keeps them from being self-inserted. This clutters the
|
---|
| 1244 | * big switch a bit, but keeps all the code in one place.
|
---|
| 1245 | */
|
---|
| 1246 |
|
---|
| 1247 | #define vbit 0x100
|
---|
| 1248 |
|
---|
| 1249 | /* leave out the "vi-mode"-only case labels if vi editing isn't
|
---|
| 1250 | * configured. */
|
---|
| 1251 | #define vi_case(caselabel) USE_FEATURE_EDITING(case caselabel)
|
---|
| 1252 |
|
---|
| 1253 | /* convert uppercase ascii to equivalent control char, for readability */
|
---|
| 1254 | #undef CTRL
|
---|
| 1255 | #define CTRL(a) ((a) & ~0x40)
|
---|
| 1256 |
|
---|
| 1257 | /* Returns:
|
---|
| 1258 | * -1 on read errors or EOF, or on bare Ctrl-D.
|
---|
| 1259 | * 0 on ctrl-C,
|
---|
| 1260 | * >0 length of input string, including terminating '\n'
|
---|
| 1261 | */
|
---|
| 1262 | int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *st)
|
---|
| 1263 | {
|
---|
| 1264 | int lastWasTab = FALSE;
|
---|
| 1265 | unsigned int ic;
|
---|
| 1266 | unsigned char c;
|
---|
| 1267 | smallint break_out = 0;
|
---|
| 1268 | #if ENABLE_FEATURE_EDITING_VI
|
---|
| 1269 | smallint vi_cmdmode = 0;
|
---|
| 1270 | smalluint prevc;
|
---|
| 1271 | #endif
|
---|
| 1272 |
|
---|
| 1273 | // FIXME: audit & improve this
|
---|
| 1274 | if (maxsize > MAX_LINELEN)
|
---|
| 1275 | maxsize = MAX_LINELEN;
|
---|
| 1276 |
|
---|
| 1277 | /* With null flags, no other fields are ever used */
|
---|
| 1278 | state = st ? st : (line_input_t*) &const_int_0;
|
---|
| 1279 | #if ENABLE_FEATURE_EDITING_SAVEHISTORY
|
---|
| 1280 | if ((state->flags & SAVE_HISTORY) && state->hist_file)
|
---|
| 1281 | load_history(state->hist_file);
|
---|
| 1282 | #endif
|
---|
| 1283 |
|
---|
| 1284 | /* prepare before init handlers */
|
---|
| 1285 | cmdedit_y = 0; /* quasireal y, not true if line > xt*yt */
|
---|
| 1286 | command_len = 0;
|
---|
| 1287 | command_ps = command;
|
---|
| 1288 | command[0] = '\0';
|
---|
| 1289 |
|
---|
| 1290 | getTermSettings(0, (void *) &initial_settings);
|
---|
| 1291 | memcpy(&new_settings, &initial_settings, sizeof(new_settings));
|
---|
| 1292 | new_settings.c_lflag &= ~ICANON; /* unbuffered input */
|
---|
| 1293 | /* Turn off echoing and CTRL-C, so we can trap it */
|
---|
| 1294 | new_settings.c_lflag &= ~(ECHO | ECHONL | ISIG);
|
---|
| 1295 | /* Hmm, in linux c_cc[] is not parsed if ICANON is off */
|
---|
| 1296 | new_settings.c_cc[VMIN] = 1;
|
---|
| 1297 | new_settings.c_cc[VTIME] = 0;
|
---|
| 1298 | /* Turn off CTRL-C, so we can trap it */
|
---|
| 1299 | #ifndef _POSIX_VDISABLE
|
---|
| 1300 | #define _POSIX_VDISABLE '\0'
|
---|
| 1301 | #endif
|
---|
| 1302 | new_settings.c_cc[VINTR] = _POSIX_VDISABLE;
|
---|
| 1303 | setTermSettings(0, (void *) &new_settings);
|
---|
| 1304 |
|
---|
| 1305 | /* Now initialize things */
|
---|
| 1306 | previous_SIGWINCH_handler = signal(SIGWINCH, win_changed);
|
---|
| 1307 | win_changed(0); /* do initial resizing */
|
---|
| 1308 | #if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
|
---|
| 1309 | {
|
---|
| 1310 | struct passwd *entry;
|
---|
| 1311 |
|
---|
| 1312 | entry = getpwuid(geteuid());
|
---|
| 1313 | if (entry) {
|
---|
| 1314 | /* If we enter read_line_input for the Nth time,
|
---|
| 1315 | * they may be already allocated! Need to free. */
|
---|
| 1316 | free(user_buf);
|
---|
| 1317 | if (home_pwd_buf != null_str)
|
---|
| 1318 | free(home_pwd_buf);
|
---|
| 1319 | user_buf = xstrdup(entry->pw_name);
|
---|
| 1320 | home_pwd_buf = xstrdup(entry->pw_dir);
|
---|
| 1321 | /* They are not freed on exit (too small to bother) */
|
---|
| 1322 | }
|
---|
| 1323 | }
|
---|
| 1324 | #endif
|
---|
| 1325 | /* Print out the command prompt */
|
---|
| 1326 | parse_prompt(prompt);
|
---|
| 1327 |
|
---|
| 1328 | while (1) {
|
---|
| 1329 | fflush(stdout);
|
---|
| 1330 |
|
---|
| 1331 | if (safe_read(0, &c, 1) < 1) {
|
---|
| 1332 | /* if we can't read input then exit */
|
---|
| 1333 | goto prepare_to_die;
|
---|
| 1334 | }
|
---|
| 1335 |
|
---|
| 1336 | ic = c;
|
---|
| 1337 |
|
---|
| 1338 | #if ENABLE_FEATURE_EDITING_VI
|
---|
| 1339 | newdelflag = 1;
|
---|
| 1340 | if (vi_cmdmode)
|
---|
| 1341 | ic |= vbit;
|
---|
| 1342 | #endif
|
---|
| 1343 | switch (ic) {
|
---|
| 1344 | case '\n':
|
---|
| 1345 | case '\r':
|
---|
| 1346 | vi_case('\n'|vbit:)
|
---|
| 1347 | vi_case('\r'|vbit:)
|
---|
| 1348 | /* Enter */
|
---|
| 1349 | goto_new_line();
|
---|
| 1350 | break_out = 1;
|
---|
| 1351 | break;
|
---|
| 1352 | #if ENABLE_FEATURE_EDITING_FANCY_KEYS
|
---|
| 1353 | case CTRL('A'):
|
---|
| 1354 | vi_case('0'|vbit:)
|
---|
| 1355 | /* Control-a -- Beginning of line */
|
---|
| 1356 | input_backward(cursor);
|
---|
| 1357 | break;
|
---|
| 1358 | case CTRL('B'):
|
---|
| 1359 | vi_case('h'|vbit:)
|
---|
| 1360 | vi_case('\b'|vbit:)
|
---|
| 1361 | vi_case('\x7f'|vbit:) /* DEL */
|
---|
| 1362 | /* Control-b -- Move back one character */
|
---|
| 1363 | input_backward(1);
|
---|
| 1364 | break;
|
---|
| 1365 | #endif
|
---|
| 1366 | case CTRL('C'):
|
---|
| 1367 | vi_case(CTRL('C')|vbit:)
|
---|
| 1368 | /* Control-c -- stop gathering input */
|
---|
| 1369 | goto_new_line();
|
---|
| 1370 | command_len = 0;
|
---|
| 1371 | break_out = -1; /* "do not append '\n'" */
|
---|
| 1372 | break;
|
---|
| 1373 | case CTRL('D'):
|
---|
| 1374 | /* Control-d -- Delete one character, or exit
|
---|
| 1375 | * if the len=0 and no chars to delete */
|
---|
| 1376 | if (command_len == 0) {
|
---|
| 1377 | errno = 0;
|
---|
| 1378 | prepare_to_die:
|
---|
| 1379 | /* to control stopped jobs */
|
---|
| 1380 | break_out = command_len = -1;
|
---|
| 1381 | break;
|
---|
| 1382 | }
|
---|
| 1383 | input_delete(0);
|
---|
| 1384 | break;
|
---|
| 1385 |
|
---|
| 1386 | #if ENABLE_FEATURE_EDITING_FANCY_KEYS
|
---|
| 1387 | case CTRL('E'):
|
---|
| 1388 | vi_case('$'|vbit:)
|
---|
| 1389 | /* Control-e -- End of line */
|
---|
| 1390 | input_end();
|
---|
| 1391 | break;
|
---|
| 1392 | case CTRL('F'):
|
---|
| 1393 | vi_case('l'|vbit:)
|
---|
| 1394 | vi_case(' '|vbit:)
|
---|
| 1395 | /* Control-f -- Move forward one character */
|
---|
| 1396 | input_forward();
|
---|
| 1397 | break;
|
---|
| 1398 | #endif
|
---|
| 1399 |
|
---|
| 1400 | case '\b':
|
---|
| 1401 | case '\x7f': /* DEL */
|
---|
| 1402 | /* Control-h and DEL */
|
---|
| 1403 | input_backspace();
|
---|
| 1404 | break;
|
---|
| 1405 |
|
---|
| 1406 | case '\t':
|
---|
| 1407 | input_tab(&lastWasTab);
|
---|
| 1408 | break;
|
---|
| 1409 |
|
---|
| 1410 | #if ENABLE_FEATURE_EDITING_FANCY_KEYS
|
---|
| 1411 | case CTRL('K'):
|
---|
| 1412 | /* Control-k -- clear to end of line */
|
---|
| 1413 | command[cursor] = 0;
|
---|
| 1414 | command_len = cursor;
|
---|
| 1415 | printf("\033[J");
|
---|
| 1416 | break;
|
---|
| 1417 | case CTRL('L'):
|
---|
| 1418 | vi_case(CTRL('L')|vbit:)
|
---|
| 1419 | /* Control-l -- clear screen */
|
---|
| 1420 | printf("\033[H");
|
---|
| 1421 | redraw(0, command_len - cursor);
|
---|
| 1422 | break;
|
---|
| 1423 | #endif
|
---|
| 1424 |
|
---|
| 1425 | #if MAX_HISTORY > 0
|
---|
| 1426 | case CTRL('N'):
|
---|
| 1427 | vi_case(CTRL('N')|vbit:)
|
---|
| 1428 | vi_case('j'|vbit:)
|
---|
| 1429 | /* Control-n -- Get next command in history */
|
---|
| 1430 | if (get_next_history())
|
---|
| 1431 | goto rewrite_line;
|
---|
| 1432 | break;
|
---|
| 1433 | case CTRL('P'):
|
---|
| 1434 | vi_case(CTRL('P')|vbit:)
|
---|
| 1435 | vi_case('k'|vbit:)
|
---|
| 1436 | /* Control-p -- Get previous command from history */
|
---|
| 1437 | if ((state->flags & DO_HISTORY) && state->cur_history > 0) {
|
---|
| 1438 | get_previous_history();
|
---|
| 1439 | goto rewrite_line;
|
---|
| 1440 | }
|
---|
| 1441 | beep();
|
---|
| 1442 | break;
|
---|
| 1443 | #endif
|
---|
| 1444 |
|
---|
| 1445 | #if ENABLE_FEATURE_EDITING_FANCY_KEYS
|
---|
| 1446 | case CTRL('U'):
|
---|
| 1447 | vi_case(CTRL('U')|vbit:)
|
---|
| 1448 | /* Control-U -- Clear line before cursor */
|
---|
| 1449 | if (cursor) {
|
---|
| 1450 | strcpy(command, command + cursor);
|
---|
| 1451 | command_len -= cursor;
|
---|
| 1452 | redraw(cmdedit_y, command_len);
|
---|
| 1453 | }
|
---|
| 1454 | break;
|
---|
| 1455 | #endif
|
---|
| 1456 | case CTRL('W'):
|
---|
| 1457 | vi_case(CTRL('W')|vbit:)
|
---|
| 1458 | /* Control-W -- Remove the last word */
|
---|
| 1459 | while (cursor > 0 && isspace(command[cursor-1]))
|
---|
| 1460 | input_backspace();
|
---|
| 1461 | while (cursor > 0 && !isspace(command[cursor-1]))
|
---|
| 1462 | input_backspace();
|
---|
| 1463 | break;
|
---|
| 1464 |
|
---|
| 1465 | #if ENABLE_FEATURE_EDITING_VI
|
---|
| 1466 | case 'i'|vbit:
|
---|
| 1467 | vi_cmdmode = 0;
|
---|
| 1468 | break;
|
---|
| 1469 | case 'I'|vbit:
|
---|
| 1470 | input_backward(cursor);
|
---|
| 1471 | vi_cmdmode = 0;
|
---|
| 1472 | break;
|
---|
| 1473 | case 'a'|vbit:
|
---|
| 1474 | input_forward();
|
---|
| 1475 | vi_cmdmode = 0;
|
---|
| 1476 | break;
|
---|
| 1477 | case 'A'|vbit:
|
---|
| 1478 | input_end();
|
---|
| 1479 | vi_cmdmode = 0;
|
---|
| 1480 | break;
|
---|
| 1481 | case 'x'|vbit:
|
---|
| 1482 | input_delete(1);
|
---|
| 1483 | break;
|
---|
| 1484 | case 'X'|vbit:
|
---|
| 1485 | if (cursor > 0) {
|
---|
| 1486 | input_backward(1);
|
---|
| 1487 | input_delete(1);
|
---|
| 1488 | }
|
---|
| 1489 | break;
|
---|
| 1490 | case 'W'|vbit:
|
---|
| 1491 | vi_Word_motion(command, 1);
|
---|
| 1492 | break;
|
---|
| 1493 | case 'w'|vbit:
|
---|
| 1494 | vi_word_motion(command, 1);
|
---|
| 1495 | break;
|
---|
| 1496 | case 'E'|vbit:
|
---|
| 1497 | vi_End_motion(command);
|
---|
| 1498 | break;
|
---|
| 1499 | case 'e'|vbit:
|
---|
| 1500 | vi_end_motion(command);
|
---|
| 1501 | break;
|
---|
| 1502 | case 'B'|vbit:
|
---|
| 1503 | vi_Back_motion(command);
|
---|
| 1504 | break;
|
---|
| 1505 | case 'b'|vbit:
|
---|
| 1506 | vi_back_motion(command);
|
---|
| 1507 | break;
|
---|
| 1508 | case 'C'|vbit:
|
---|
| 1509 | vi_cmdmode = 0;
|
---|
| 1510 | /* fall through */
|
---|
| 1511 | case 'D'|vbit:
|
---|
| 1512 | goto clear_to_eol;
|
---|
| 1513 |
|
---|
| 1514 | case 'c'|vbit:
|
---|
| 1515 | vi_cmdmode = 0;
|
---|
| 1516 | /* fall through */
|
---|
| 1517 | case 'd'|vbit: {
|
---|
| 1518 | int nc, sc;
|
---|
| 1519 | sc = cursor;
|
---|
| 1520 | prevc = ic;
|
---|
| 1521 | if (safe_read(0, &c, 1) < 1)
|
---|
| 1522 | goto prepare_to_die;
|
---|
| 1523 | if (c == (prevc & 0xff)) {
|
---|
| 1524 | /* "cc", "dd" */
|
---|
| 1525 | input_backward(cursor);
|
---|
| 1526 | goto clear_to_eol;
|
---|
| 1527 | break;
|
---|
| 1528 | }
|
---|
| 1529 | switch (c) {
|
---|
| 1530 | case 'w':
|
---|
| 1531 | case 'W':
|
---|
| 1532 | case 'e':
|
---|
| 1533 | case 'E':
|
---|
| 1534 | switch (c) {
|
---|
| 1535 | case 'w': /* "dw", "cw" */
|
---|
| 1536 | vi_word_motion(command, vi_cmdmode);
|
---|
| 1537 | break;
|
---|
| 1538 | case 'W': /* 'dW', 'cW' */
|
---|
| 1539 | vi_Word_motion(command, vi_cmdmode);
|
---|
| 1540 | break;
|
---|
| 1541 | case 'e': /* 'de', 'ce' */
|
---|
| 1542 | vi_end_motion(command);
|
---|
| 1543 | input_forward();
|
---|
| 1544 | break;
|
---|
| 1545 | case 'E': /* 'dE', 'cE' */
|
---|
| 1546 | vi_End_motion(command);
|
---|
| 1547 | input_forward();
|
---|
| 1548 | break;
|
---|
| 1549 | }
|
---|
| 1550 | nc = cursor;
|
---|
| 1551 | input_backward(cursor - sc);
|
---|
| 1552 | while (nc-- > cursor)
|
---|
| 1553 | input_delete(1);
|
---|
| 1554 | break;
|
---|
| 1555 | case 'b': /* "db", "cb" */
|
---|
| 1556 | case 'B': /* implemented as B */
|
---|
| 1557 | if (c == 'b')
|
---|
| 1558 | vi_back_motion(command);
|
---|
| 1559 | else
|
---|
| 1560 | vi_Back_motion(command);
|
---|
| 1561 | while (sc-- > cursor)
|
---|
| 1562 | input_delete(1);
|
---|
| 1563 | break;
|
---|
| 1564 | case ' ': /* "d ", "c " */
|
---|
| 1565 | input_delete(1);
|
---|
| 1566 | break;
|
---|
| 1567 | case '$': /* "d$", "c$" */
|
---|
| 1568 | clear_to_eol:
|
---|
| 1569 | while (cursor < command_len)
|
---|
| 1570 | input_delete(1);
|
---|
| 1571 | break;
|
---|
| 1572 | }
|
---|
| 1573 | break;
|
---|
| 1574 | }
|
---|
| 1575 | case 'p'|vbit:
|
---|
| 1576 | input_forward();
|
---|
| 1577 | /* fallthrough */
|
---|
| 1578 | case 'P'|vbit:
|
---|
| 1579 | put();
|
---|
| 1580 | break;
|
---|
| 1581 | case 'r'|vbit:
|
---|
| 1582 | if (safe_read(0, &c, 1) < 1)
|
---|
| 1583 | goto prepare_to_die;
|
---|
| 1584 | if (c == 0)
|
---|
| 1585 | beep();
|
---|
| 1586 | else {
|
---|
| 1587 | *(command + cursor) = c;
|
---|
| 1588 | putchar(c);
|
---|
| 1589 | putchar('\b');
|
---|
| 1590 | }
|
---|
| 1591 | break;
|
---|
| 1592 | #endif /* FEATURE_COMMAND_EDITING_VI */
|
---|
| 1593 |
|
---|
| 1594 | case '\x1b': /* ESC */
|
---|
| 1595 |
|
---|
| 1596 | #if ENABLE_FEATURE_EDITING_VI
|
---|
| 1597 | if (state->flags & VI_MODE) {
|
---|
| 1598 | /* ESC: insert mode --> command mode */
|
---|
| 1599 | vi_cmdmode = 1;
|
---|
| 1600 | input_backward(1);
|
---|
| 1601 | break;
|
---|
| 1602 | }
|
---|
| 1603 | #endif
|
---|
| 1604 | /* escape sequence follows */
|
---|
| 1605 | if (safe_read(0, &c, 1) < 1)
|
---|
| 1606 | goto prepare_to_die;
|
---|
| 1607 | /* different vt100 emulations */
|
---|
| 1608 | if (c == '[' || c == 'O') {
|
---|
| 1609 | vi_case('['|vbit:)
|
---|
| 1610 | vi_case('O'|vbit:)
|
---|
| 1611 | if (safe_read(0, &c, 1) < 1)
|
---|
| 1612 | goto prepare_to_die;
|
---|
| 1613 | }
|
---|
| 1614 | if (c >= '1' && c <= '9') {
|
---|
| 1615 | unsigned char dummy;
|
---|
| 1616 |
|
---|
| 1617 | if (safe_read(0, &dummy, 1) < 1)
|
---|
| 1618 | goto prepare_to_die;
|
---|
| 1619 | if (dummy != '~')
|
---|
| 1620 | c = '\0';
|
---|
| 1621 | }
|
---|
| 1622 |
|
---|
| 1623 | switch (c) {
|
---|
| 1624 | #if ENABLE_FEATURE_TAB_COMPLETION
|
---|
| 1625 | case '\t': /* Alt-Tab */
|
---|
| 1626 | input_tab(&lastWasTab);
|
---|
| 1627 | break;
|
---|
| 1628 | #endif
|
---|
| 1629 | #if MAX_HISTORY > 0
|
---|
| 1630 | case 'A':
|
---|
| 1631 | /* Up Arrow -- Get previous command from history */
|
---|
| 1632 | if ((state->flags & DO_HISTORY) && state->cur_history > 0) {
|
---|
| 1633 | get_previous_history();
|
---|
| 1634 | goto rewrite_line;
|
---|
| 1635 | }
|
---|
| 1636 | beep();
|
---|
| 1637 | break;
|
---|
| 1638 | case 'B':
|
---|
| 1639 | /* Down Arrow -- Get next command in history */
|
---|
| 1640 | if (!get_next_history())
|
---|
| 1641 | break;
|
---|
| 1642 | rewrite_line:
|
---|
| 1643 | /* Rewrite the line with the selected history item */
|
---|
| 1644 | /* change command */
|
---|
| 1645 | command_len = strlen(strcpy(command, state->history[state->cur_history]));
|
---|
| 1646 | /* redraw and go to eol (bol, in vi */
|
---|
| 1647 | redraw(cmdedit_y, (state->flags & VI_MODE) ? 9999 : 0);
|
---|
| 1648 | break;
|
---|
| 1649 | #endif
|
---|
| 1650 | case 'C':
|
---|
| 1651 | /* Right Arrow -- Move forward one character */
|
---|
| 1652 | input_forward();
|
---|
| 1653 | break;
|
---|
| 1654 | case 'D':
|
---|
| 1655 | /* Left Arrow -- Move back one character */
|
---|
| 1656 | input_backward(1);
|
---|
| 1657 | break;
|
---|
| 1658 | case '3':
|
---|
| 1659 | /* Delete */
|
---|
| 1660 | input_delete(0);
|
---|
| 1661 | break;
|
---|
| 1662 | case '1': // vt100? linux vt? or what?
|
---|
| 1663 | case '7': // vt100? linux vt? or what?
|
---|
| 1664 | case 'H': /* xterm's <Home> */
|
---|
| 1665 | input_backward(cursor);
|
---|
| 1666 | break;
|
---|
| 1667 | case '4': // vt100? linux vt? or what?
|
---|
| 1668 | case '8': // vt100? linux vt? or what?
|
---|
| 1669 | case 'F': /* xterm's <End> */
|
---|
| 1670 | input_end();
|
---|
| 1671 | break;
|
---|
| 1672 | default:
|
---|
| 1673 | c = '\0';
|
---|
| 1674 | beep();
|
---|
| 1675 | }
|
---|
| 1676 | break;
|
---|
| 1677 |
|
---|
| 1678 | default: /* If it's regular input, do the normal thing */
|
---|
| 1679 | #if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
|
---|
| 1680 | /* Control-V -- Add non-printable symbol */
|
---|
| 1681 | if (c == CTRL('V')) {
|
---|
| 1682 | if (safe_read(0, &c, 1) < 1)
|
---|
| 1683 | goto prepare_to_die;
|
---|
| 1684 | if (c == 0) {
|
---|
| 1685 | beep();
|
---|
| 1686 | break;
|
---|
| 1687 | }
|
---|
| 1688 | } else
|
---|
| 1689 | #endif
|
---|
| 1690 |
|
---|
| 1691 | #if ENABLE_FEATURE_EDITING_VI
|
---|
| 1692 | if (vi_cmdmode) /* Don't self-insert */
|
---|
| 1693 | break;
|
---|
| 1694 | #endif
|
---|
| 1695 | if (!Isprint(c)) /* Skip non-printable characters */
|
---|
| 1696 | break;
|
---|
| 1697 |
|
---|
| 1698 | if (command_len >= (maxsize - 2)) /* Need to leave space for enter */
|
---|
| 1699 | break;
|
---|
| 1700 |
|
---|
| 1701 | command_len++;
|
---|
| 1702 | if (cursor == (command_len - 1)) { /* Append if at the end of the line */
|
---|
| 1703 | command[cursor] = c;
|
---|
| 1704 | command[cursor+1] = '\0';
|
---|
| 1705 | cmdedit_set_out_char(' ');
|
---|
| 1706 | } else { /* Insert otherwise */
|
---|
| 1707 | int sc = cursor;
|
---|
| 1708 |
|
---|
| 1709 | memmove(command + sc + 1, command + sc, command_len - sc);
|
---|
| 1710 | command[sc] = c;
|
---|
| 1711 | sc++;
|
---|
| 1712 | /* rewrite from cursor */
|
---|
| 1713 | input_end();
|
---|
| 1714 | /* to prev x pos + 1 */
|
---|
| 1715 | input_backward(cursor - sc);
|
---|
| 1716 | }
|
---|
| 1717 | break;
|
---|
| 1718 | }
|
---|
| 1719 | if (break_out) /* Enter is the command terminator, no more input. */
|
---|
| 1720 | break;
|
---|
| 1721 |
|
---|
| 1722 | if (c != '\t')
|
---|
| 1723 | lastWasTab = FALSE;
|
---|
| 1724 | }
|
---|
| 1725 |
|
---|
| 1726 | if (command_len > 0)
|
---|
| 1727 | remember_in_history(command);
|
---|
| 1728 |
|
---|
| 1729 | if (break_out > 0) {
|
---|
| 1730 | command[command_len++] = '\n';
|
---|
| 1731 | command[command_len] = '\0';
|
---|
| 1732 | }
|
---|
| 1733 |
|
---|
| 1734 | #if ENABLE_FEATURE_CLEAN_UP && ENABLE_FEATURE_TAB_COMPLETION
|
---|
| 1735 | free_tab_completion_data();
|
---|
| 1736 | #endif
|
---|
| 1737 |
|
---|
| 1738 | #if ENABLE_FEATURE_EDITING_FANCY_PROMPT
|
---|
| 1739 | free((char*)cmdedit_prompt);
|
---|
| 1740 | #endif
|
---|
| 1741 | /* restore initial_settings */
|
---|
| 1742 | setTermSettings(STDIN_FILENO, (void *) &initial_settings);
|
---|
| 1743 | /* restore SIGWINCH handler */
|
---|
| 1744 | signal(SIGWINCH, previous_SIGWINCH_handler);
|
---|
| 1745 | fflush(stdout);
|
---|
| 1746 | return command_len;
|
---|
| 1747 | }
|
---|
| 1748 |
|
---|
| 1749 | line_input_t *new_line_input_t(int flags)
|
---|
| 1750 | {
|
---|
| 1751 | line_input_t *n = xzalloc(sizeof(*n));
|
---|
| 1752 | n->flags = flags;
|
---|
| 1753 | return n;
|
---|
| 1754 | }
|
---|
| 1755 |
|
---|
| 1756 | #else
|
---|
| 1757 |
|
---|
| 1758 | #undef read_line_input
|
---|
| 1759 | int read_line_input(const char* prompt, char* command, int maxsize)
|
---|
| 1760 | {
|
---|
| 1761 | fputs(prompt, stdout);
|
---|
| 1762 | fflush(stdout);
|
---|
| 1763 | fgets(command, maxsize, stdin);
|
---|
| 1764 | return strlen(command);
|
---|
| 1765 | }
|
---|
| 1766 |
|
---|
| 1767 | #endif /* FEATURE_COMMAND_EDITING */
|
---|
| 1768 |
|
---|
| 1769 |
|
---|
| 1770 | /*
|
---|
| 1771 | * Testing
|
---|
| 1772 | */
|
---|
| 1773 |
|
---|
| 1774 | #ifdef TEST
|
---|
| 1775 |
|
---|
| 1776 | #include <locale.h>
|
---|
| 1777 |
|
---|
| 1778 | const char *applet_name = "debug stuff usage";
|
---|
| 1779 |
|
---|
| 1780 | int main(int argc, char **argv)
|
---|
| 1781 | {
|
---|
| 1782 | char buff[MAX_LINELEN];
|
---|
| 1783 | char *prompt =
|
---|
| 1784 | #if ENABLE_FEATURE_EDITING_FANCY_PROMPT
|
---|
| 1785 | "\\[\\033[32;1m\\]\\u@\\[\\x1b[33;1m\\]\\h:"
|
---|
| 1786 | "\\[\\033[34;1m\\]\\w\\[\\033[35;1m\\] "
|
---|
| 1787 | "\\!\\[\\e[36;1m\\]\\$ \\[\\E[0m\\]";
|
---|
| 1788 | #else
|
---|
| 1789 | "% ";
|
---|
| 1790 | #endif
|
---|
| 1791 |
|
---|
| 1792 | #if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
|
---|
| 1793 | setlocale(LC_ALL, "");
|
---|
| 1794 | #endif
|
---|
| 1795 | while (1) {
|
---|
| 1796 | int l;
|
---|
| 1797 | l = read_line_input(prompt, buff);
|
---|
| 1798 | if (l <= 0 || buff[l-1] != '\n')
|
---|
| 1799 | break;
|
---|
| 1800 | buff[l-1] = 0;
|
---|
| 1801 | printf("*** read_line_input() returned line =%s=\n", buff);
|
---|
| 1802 | }
|
---|
| 1803 | printf("*** read_line_input() detect ^D\n");
|
---|
| 1804 | return 0;
|
---|
| 1805 | }
|
---|
| 1806 |
|
---|
| 1807 | #endif /* TEST */
|
---|