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