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)))
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453 | continue;
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454 | /* not see .name without .match */
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455 | if (*str_found == '.' && *pfind == 0) {
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456 | if (NOT_LONE_CHAR(paths[i], '/') || str_found[1])
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457 | continue;
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458 | str_found = ""; /* only "/" */
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459 | }
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460 | found = concat_path_file(paths[i], str_found);
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461 | /* hmm, remover in progress? */
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462 | if (stat(found, &st) < 0)
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463 | goto cont;
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464 | /* find with dirs? */
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465 | if (paths[i] != dirbuf)
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466 | strcpy(found, next->d_name); /* only name */
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467 |
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468 | len1 = strlen(found);
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469 | found = xrealloc(found, len1 + 2);
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470 | found[len1] = '\0';
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471 | found[len1+1] = '\0';
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472 |
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473 | if (S_ISDIR(st.st_mode)) {
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474 | /* name is directory */
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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 */
|
---|