1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * tiny vi.c: A small 'vi' clone
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4 | * Copyright (C) 2000, 2001 Sterling Huxley <sterling@europa.com>
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5 | *
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6 | * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
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7 | */
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8 |
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9 | /*
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10 | * Things To Do:
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11 | * EXINIT
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12 | * $HOME/.exrc and ./.exrc
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13 | * add magic to search /foo.*bar
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14 | * add :help command
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15 | * :map macros
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16 | * if mark[] values were line numbers rather than pointers
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17 | * it would be easier to change the mark when add/delete lines
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18 | * More intelligence in refresh()
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19 | * ":r !cmd" and "!cmd" to filter text through an external command
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20 | * A true "undo" facility
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21 | * An "ex" line oriented mode- maybe using "cmdedit"
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22 | */
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23 |
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24 | #include "libbb.h"
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25 |
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26 | #define ENABLE_FEATURE_VI_CRASHME 0
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27 |
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28 | #if ENABLE_LOCALE_SUPPORT
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29 | #define Isprint(c) isprint((c))
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30 | #else
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31 | /* 0x9b is Meta-ESC */
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32 | #define Isprint(c) ((unsigned char)(c) >= ' ' && (c) != 0x7f && (unsigned char)(c) != 0x9b)
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33 | #endif
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34 |
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35 | enum {
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36 | MAX_LINELEN = CONFIG_FEATURE_VI_MAX_LEN,
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37 | MAX_SCR_COLS = CONFIG_FEATURE_VI_MAX_LEN,
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38 | };
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39 |
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40 | // Misc. non-Ascii keys that report an escape sequence
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41 | #define VI_K_UP (char)128 // cursor key Up
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42 | #define VI_K_DOWN (char)129 // cursor key Down
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43 | #define VI_K_RIGHT (char)130 // Cursor Key Right
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44 | #define VI_K_LEFT (char)131 // cursor key Left
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45 | #define VI_K_HOME (char)132 // Cursor Key Home
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46 | #define VI_K_END (char)133 // Cursor Key End
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47 | #define VI_K_INSERT (char)134 // Cursor Key Insert
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48 | #define VI_K_PAGEUP (char)135 // Cursor Key Page Up
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49 | #define VI_K_PAGEDOWN (char)136 // Cursor Key Page Down
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50 | #define VI_K_FUN1 (char)137 // Function Key F1
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51 | #define VI_K_FUN2 (char)138 // Function Key F2
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52 | #define VI_K_FUN3 (char)139 // Function Key F3
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53 | #define VI_K_FUN4 (char)140 // Function Key F4
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54 | #define VI_K_FUN5 (char)141 // Function Key F5
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55 | #define VI_K_FUN6 (char)142 // Function Key F6
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56 | #define VI_K_FUN7 (char)143 // Function Key F7
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57 | #define VI_K_FUN8 (char)144 // Function Key F8
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58 | #define VI_K_FUN9 (char)145 // Function Key F9
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59 | #define VI_K_FUN10 (char)146 // Function Key F10
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60 | #define VI_K_FUN11 (char)147 // Function Key F11
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61 | #define VI_K_FUN12 (char)148 // Function Key F12
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62 |
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63 | /* vt102 typical ESC sequence */
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64 | /* terminal standout start/normal ESC sequence */
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65 | static const char SOs[] ALIGN1 = "\033[7m";
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66 | static const char SOn[] ALIGN1 = "\033[0m";
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67 | /* terminal bell sequence */
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68 | static const char bell[] ALIGN1 = "\007";
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69 | /* Clear-end-of-line and Clear-end-of-screen ESC sequence */
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70 | static const char Ceol[] ALIGN1 = "\033[0K";
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71 | static const char Ceos[] ALIGN1 = "\033[0J";
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72 | /* Cursor motion arbitrary destination ESC sequence */
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73 | static const char CMrc[] ALIGN1 = "\033[%d;%dH";
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74 | /* Cursor motion up and down ESC sequence */
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75 | static const char CMup[] ALIGN1 = "\033[A";
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76 | static const char CMdown[] ALIGN1 = "\n";
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77 |
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78 |
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79 | enum {
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80 | YANKONLY = FALSE,
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81 | YANKDEL = TRUE,
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82 | FORWARD = 1, // code depends on "1" for array index
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83 | BACK = -1, // code depends on "-1" for array index
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84 | LIMITED = 0, // how much of text[] in char_search
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85 | FULL = 1, // how much of text[] in char_search
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86 |
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87 | S_BEFORE_WS = 1, // used in skip_thing() for moving "dot"
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88 | S_TO_WS = 2, // used in skip_thing() for moving "dot"
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89 | S_OVER_WS = 3, // used in skip_thing() for moving "dot"
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90 | S_END_PUNCT = 4, // used in skip_thing() for moving "dot"
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91 | S_END_ALNUM = 5, // used in skip_thing() for moving "dot"
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92 | };
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93 |
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94 | /* vi.c expects chars to be unsigned. */
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95 | /* busybox build system provides that, but it's better */
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96 | /* to audit and fix the source */
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97 |
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98 | static smallint vi_setops;
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99 | #define VI_AUTOINDENT 1
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100 | #define VI_SHOWMATCH 2
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101 | #define VI_IGNORECASE 4
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102 | #define VI_ERR_METHOD 8
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103 | #define autoindent (vi_setops & VI_AUTOINDENT)
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104 | #define showmatch (vi_setops & VI_SHOWMATCH )
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105 | #define ignorecase (vi_setops & VI_IGNORECASE)
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106 | /* indicate error with beep or flash */
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107 | #define err_method (vi_setops & VI_ERR_METHOD)
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108 |
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109 |
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110 | static smallint editing; // >0 while we are editing a file
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111 | // [code audit says "can be 0 or 1 only"]
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112 | static smallint cmd_mode; // 0=command 1=insert 2=replace
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113 | static smallint file_modified; // buffer contents changed
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114 | static smallint last_file_modified = -1;
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115 | static int fn_start; // index of first cmd line file name
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116 | static int save_argc; // how many file names on cmd line
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117 | static int cmdcnt; // repetition count
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118 | static int rows, columns; // the terminal screen is this size
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119 | static int crow, ccol, offset; // cursor is on Crow x Ccol with Horz Ofset
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120 | static char *status_buffer; // mesages to the user
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121 | #define STATUS_BUFFER_LEN 200
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122 | static int have_status_msg; // is default edit status needed?
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123 | // [don't make smallint!]
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124 | static int last_status_cksum; // hash of current status line
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125 | static char *current_filename; // current file name
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126 | //static char *text, *end; // pointers to the user data in memory
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127 | static char *screen; // pointer to the virtual screen buffer
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128 | static int screensize; // and its size
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129 | static char *screenbegin; // index into text[], of top line on the screen
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130 | //static char *dot; // where all the action takes place
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131 | static int tabstop;
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132 | static char erase_char; // the users erase character
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133 | static char last_input_char; // last char read from user
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134 | static char last_forward_char; // last char searched for with 'f'
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135 |
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136 | #if ENABLE_FEATURE_VI_READONLY
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137 | //static smallint vi_readonly, readonly;
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138 | static smallint readonly_mode = 0;
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139 | #define SET_READONLY_FILE(flags) ((flags) |= 0x01)
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140 | #define SET_READONLY_MODE(flags) ((flags) |= 0x02)
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141 | #define UNSET_READONLY_FILE(flags) ((flags) &= 0xfe)
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142 | #else
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143 | #define readonly_mode 0
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144 | #define SET_READONLY_FILE(flags)
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145 | #define SET_READONLY_MODE(flags)
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146 | #define UNSET_READONLY_FILE(flags)
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147 | #endif
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148 |
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149 | #if ENABLE_FEATURE_VI_DOT_CMD
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150 | static smallint adding2q; // are we currently adding user input to q
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151 | static char *last_modifying_cmd; // last modifying cmd for "."
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152 | static char *ioq, *ioq_start; // pointer to string for get_one_char to "read"
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153 | #endif
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154 | #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
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155 | static int last_row; // where the cursor was last moved to
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156 | #endif
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157 | #if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
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158 | static int my_pid;
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159 | #endif
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160 | #if ENABLE_FEATURE_VI_DOT_CMD || ENABLE_FEATURE_VI_YANKMARK
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161 | static char *modifying_cmds; // cmds that modify text[]
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162 | #endif
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163 | #if ENABLE_FEATURE_VI_SEARCH
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164 | static char *last_search_pattern; // last pattern from a '/' or '?' search
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165 | #endif
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166 |
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167 | /* Moving biggest data to malloced space... */
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168 | struct globals {
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169 | /* many references - keep near the top of globals */
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170 | char *text, *end; // pointers to the user data in memory
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171 | int text_size; // size of the allocated buffer
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172 | char *dot; // where all the action takes place
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173 | #if ENABLE_FEATURE_VI_YANKMARK
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174 | char *reg[28]; // named register a-z, "D", and "U" 0-25,26,27
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175 | int YDreg, Ureg; // default delete register and orig line for "U"
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176 | char *mark[28]; // user marks points somewhere in text[]- a-z and previous context ''
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177 | char *context_start, *context_end;
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178 | #endif
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179 | /* a few references only */
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180 | #if ENABLE_FEATURE_VI_USE_SIGNALS
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181 | jmp_buf restart; // catch_sig()
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182 | #endif
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183 | struct termios term_orig, term_vi; // remember what the cooked mode was
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184 | #if ENABLE_FEATURE_VI_COLON
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185 | char *initial_cmds[3]; // currently 2 entries, NULL terminated
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186 | #endif
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187 | };
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188 | #define G (*ptr_to_globals)
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189 | #define text (G.text )
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190 | #define text_size (G.text_size )
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191 | #define end (G.end )
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192 | #define dot (G.dot )
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193 | #define reg (G.reg )
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194 | #define YDreg (G.YDreg )
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195 | #define Ureg (G.Ureg )
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196 | #define mark (G.mark )
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197 | #define context_start (G.context_start )
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198 | #define context_end (G.context_end )
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199 | #define restart (G.restart )
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200 | #define term_orig (G.term_orig )
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201 | #define term_vi (G.term_vi )
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202 | #define initial_cmds (G.initial_cmds )
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203 |
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204 | static int init_text_buffer(char *); // init from file or create new
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205 | static void edit_file(char *); // edit one file
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206 | static void do_cmd(char); // execute a command
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207 | static int next_tabstop(int);
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208 | static void sync_cursor(char *, int *, int *); // synchronize the screen cursor to dot
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209 | static char *begin_line(char *); // return pointer to cur line B-o-l
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210 | static char *end_line(char *); // return pointer to cur line E-o-l
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211 | static char *prev_line(char *); // return pointer to prev line B-o-l
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212 | static char *next_line(char *); // return pointer to next line B-o-l
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213 | static char *end_screen(void); // get pointer to last char on screen
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214 | static int count_lines(char *, char *); // count line from start to stop
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215 | static char *find_line(int); // find begining of line #li
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216 | static char *move_to_col(char *, int); // move "p" to column l
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217 | static void dot_left(void); // move dot left- dont leave line
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218 | static void dot_right(void); // move dot right- dont leave line
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219 | static void dot_begin(void); // move dot to B-o-l
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220 | static void dot_end(void); // move dot to E-o-l
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221 | static void dot_next(void); // move dot to next line B-o-l
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222 | static void dot_prev(void); // move dot to prev line B-o-l
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223 | static void dot_scroll(int, int); // move the screen up or down
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224 | static void dot_skip_over_ws(void); // move dot pat WS
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225 | static void dot_delete(void); // delete the char at 'dot'
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226 | static char *bound_dot(char *); // make sure text[0] <= P < "end"
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227 | static char *new_screen(int, int); // malloc virtual screen memory
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228 | static char *char_insert(char *, char); // insert the char c at 'p'
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229 | static char *stupid_insert(char *, char); // stupidly insert the char c at 'p'
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230 | static char find_range(char **, char **, char); // return pointers for an object
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231 | static int st_test(char *, int, int, char *); // helper for skip_thing()
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232 | static char *skip_thing(char *, int, int, int); // skip some object
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233 | static char *find_pair(char *, char); // find matching pair () [] {}
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234 | static char *text_hole_delete(char *, char *); // at "p", delete a 'size' byte hole
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235 | static char *text_hole_make(char *, int); // at "p", make a 'size' byte hole
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236 | static char *yank_delete(char *, char *, int, int); // yank text[] into register then delete
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237 | static void show_help(void); // display some help info
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238 | static void rawmode(void); // set "raw" mode on tty
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239 | static void cookmode(void); // return to "cooked" mode on tty
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240 | static int mysleep(int); // sleep for 'h' 1/100 seconds
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241 | static char readit(void); // read (maybe cursor) key from stdin
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242 | static char get_one_char(void); // read 1 char from stdin
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243 | static int file_size(const char *); // what is the byte size of "fn"
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244 | #if ENABLE_FEATURE_VI_READONLY
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245 | static int file_insert(const char *, char *, int);
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246 | #else
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247 | static int file_insert(const char *, char *);
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248 | #endif
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249 | static int file_write(char *, char *, char *);
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250 | static void place_cursor(int, int, int);
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251 | static void screen_erase(void);
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252 | static void clear_to_eol(void);
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253 | static void clear_to_eos(void);
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254 | static void standout_start(void); // send "start reverse video" sequence
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255 | static void standout_end(void); // send "end reverse video" sequence
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256 | static void flash(int); // flash the terminal screen
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257 | static void show_status_line(void); // put a message on the bottom line
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258 | static void psb(const char *, ...); // Print Status Buf
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259 | static void psbs(const char *, ...); // Print Status Buf in standout mode
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260 | static void ni(const char *); // display messages
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261 | static int format_edit_status(void); // format file status on status line
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262 | static void redraw(int); // force a full screen refresh
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263 | static void format_line(char*, char*, int);
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264 | static void refresh(int); // update the terminal from screen[]
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265 |
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266 | static void Indicate_Error(void); // use flash or beep to indicate error
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267 | #define indicate_error(c) Indicate_Error()
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268 | static void Hit_Return(void);
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269 |
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270 | #if ENABLE_FEATURE_VI_SEARCH
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271 | static char *char_search(char *, const char *, int, int); // search for pattern starting at p
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272 | static int mycmp(const char *, const char *, int); // string cmp based in "ignorecase"
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273 | #endif
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274 | #if ENABLE_FEATURE_VI_COLON
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275 | static char *get_one_address(char *, int *); // get colon addr, if present
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276 | static char *get_address(char *, int *, int *); // get two colon addrs, if present
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277 | static void colon(char *); // execute the "colon" mode cmds
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278 | #endif
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279 | #if ENABLE_FEATURE_VI_USE_SIGNALS
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280 | static void winch_sig(int); // catch window size changes
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281 | static void suspend_sig(int); // catch ctrl-Z
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282 | static void catch_sig(int); // catch ctrl-C and alarm time-outs
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283 | #endif
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284 | #if ENABLE_FEATURE_VI_DOT_CMD
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285 | static void start_new_cmd_q(char); // new queue for command
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286 | static void end_cmd_q(void); // stop saving input chars
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287 | #else
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288 | #define end_cmd_q() ((void)0)
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289 | #endif
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290 | #if ENABLE_FEATURE_VI_SETOPTS
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291 | static void showmatching(char *); // show the matching pair () [] {}
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292 | #endif
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293 | #if ENABLE_FEATURE_VI_YANKMARK || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) || ENABLE_FEATURE_VI_CRASHME
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294 | static char *string_insert(char *, char *); // insert the string at 'p'
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295 | #endif
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296 | #if ENABLE_FEATURE_VI_YANKMARK
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297 | static char *text_yank(char *, char *, int); // save copy of "p" into a register
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298 | static char what_reg(void); // what is letter of current YDreg
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299 | static void check_context(char); // remember context for '' command
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300 | #endif
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301 | #if ENABLE_FEATURE_VI_CRASHME
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302 | static void crash_dummy();
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303 | static void crash_test();
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304 | static int crashme = 0;
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305 | #endif
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306 |
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307 |
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308 | static void write1(const char *out)
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309 | {
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310 | fputs(out, stdout);
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311 | }
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312 |
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313 | int vi_main(int argc, char **argv);
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314 | int vi_main(int argc, char **argv)
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315 | {
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316 | int c;
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317 | RESERVE_CONFIG_BUFFER(STATUS_BUFFER, STATUS_BUFFER_LEN);
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318 |
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319 | #if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
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320 | my_pid = getpid();
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321 | #endif
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322 |
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323 | PTR_TO_GLOBALS = xzalloc(sizeof(G));
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324 |
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325 | #if ENABLE_FEATURE_VI_CRASHME
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326 | srand((long) my_pid);
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327 | #endif
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328 |
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329 | status_buffer = STATUS_BUFFER;
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330 | last_status_cksum = 0;
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331 | text = NULL;
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332 |
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333 | #ifdef NO_SUCH_APPLET_YET
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334 | /* If we aren't "vi", we are "view" */
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335 | if (ENABLE_FEATURE_VI_READONLY && applet_name[2]) {
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336 | SET_READONLY_MODE(readonly_mode);
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337 | }
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338 | #endif
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339 |
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340 | vi_setops = VI_AUTOINDENT | VI_SHOWMATCH | VI_IGNORECASE | VI_ERR_METHOD;
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341 | #if ENABLE_FEATURE_VI_YANKMARK
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342 | memset(reg, 0, sizeof(reg)); // init the yank regs
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343 | #endif
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344 | #if ENABLE_FEATURE_VI_DOT_CMD || ENABLE_FEATURE_VI_YANKMARK
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345 | modifying_cmds = (char *) "aAcCdDiIJoOpPrRsxX<>~"; // cmds modifying text[]
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346 | #endif
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347 |
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348 | // 1- process $HOME/.exrc file (not inplemented yet)
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349 | // 2- process EXINIT variable from environment
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350 | // 3- process command line args
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351 | #if ENABLE_FEATURE_VI_COLON
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352 | {
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353 | char *p = getenv("EXINIT");
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354 | if (p && *p)
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355 | initial_cmds[0] = xstrdup(p);
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356 | }
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357 | #endif
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358 | while ((c = getopt(argc, argv, "hCR" USE_FEATURE_VI_COLON("c:"))) != -1) {
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359 | switch (c) {
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360 | #if ENABLE_FEATURE_VI_CRASHME
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361 | case 'C':
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362 | crashme = 1;
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363 | break;
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364 | #endif
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365 | #if ENABLE_FEATURE_VI_READONLY
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366 | case 'R': // Read-only flag
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367 | SET_READONLY_MODE(readonly_mode);
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368 | break;
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369 | #endif
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370 | //case 'r': // recover flag- ignore- we don't use tmp file
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371 | //case 'x': // encryption flag- ignore
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372 | //case 'c': // execute command first
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373 | #if ENABLE_FEATURE_VI_COLON
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374 | case 'c': // cmd line vi command
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375 | if (*optarg)
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376 | initial_cmds[initial_cmds[0] != 0] = xstrdup(optarg);
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377 | break;
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378 | //case 'h': // help -- just use default
|
---|
379 | #endif
|
---|
380 | default:
|
---|
381 | show_help();
|
---|
382 | return 1;
|
---|
383 | }
|
---|
384 | }
|
---|
385 |
|
---|
386 | // The argv array can be used by the ":next" and ":rewind" commands
|
---|
387 | // save optind.
|
---|
388 | fn_start = optind; // remember first file name for :next and :rew
|
---|
389 | save_argc = argc;
|
---|
390 |
|
---|
391 | //----- This is the main file handling loop --------------
|
---|
392 | if (optind >= argc) {
|
---|
393 | edit_file(0);
|
---|
394 | } else {
|
---|
395 | for (; optind < argc; optind++) {
|
---|
396 | edit_file(argv[optind]);
|
---|
397 | }
|
---|
398 | }
|
---|
399 | //-----------------------------------------------------------
|
---|
400 |
|
---|
401 | return 0;
|
---|
402 | }
|
---|
403 |
|
---|
404 | /* read text from file or create an empty buf */
|
---|
405 | /* will also update current_filename */
|
---|
406 | static int init_text_buffer(char *fn)
|
---|
407 | {
|
---|
408 | int rc;
|
---|
409 | int size = file_size(fn); // file size. -1 means does not exist.
|
---|
410 |
|
---|
411 | /* allocate/reallocate text buffer */
|
---|
412 | free(text);
|
---|
413 | text_size = size * 2;
|
---|
414 | if (text_size < 10240)
|
---|
415 | text_size = 10240; // have a minimum size for new files
|
---|
416 | screenbegin = dot = end = text = xzalloc(text_size);
|
---|
417 |
|
---|
418 | if (fn != current_filename) {
|
---|
419 | free(current_filename);
|
---|
420 | current_filename = xstrdup(fn);
|
---|
421 | }
|
---|
422 | if (size < 0) {
|
---|
423 | // file dont exist. Start empty buf with dummy line
|
---|
424 | char_insert(text, '\n');
|
---|
425 | rc = 0;
|
---|
426 | } else {
|
---|
427 | rc = file_insert(fn, text
|
---|
428 | USE_FEATURE_VI_READONLY(, 1));
|
---|
429 | }
|
---|
430 | file_modified = 0;
|
---|
431 | last_file_modified = -1;
|
---|
432 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
433 | /* init the marks. */
|
---|
434 | memset(mark, 0, sizeof(mark));
|
---|
435 | #endif
|
---|
436 | return rc;
|
---|
437 | }
|
---|
438 |
|
---|
439 | static void edit_file(char * fn)
|
---|
440 | {
|
---|
441 | char c;
|
---|
442 | int size;
|
---|
443 |
|
---|
444 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
445 | int sig;
|
---|
446 | #endif
|
---|
447 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
448 | static char *cur_line;
|
---|
449 | #endif
|
---|
450 |
|
---|
451 | editing = 1; // 0= exit, 1= one file, 2= multiple files
|
---|
452 | rawmode();
|
---|
453 | rows = 24;
|
---|
454 | columns = 80;
|
---|
455 | size = 0;
|
---|
456 | if (ENABLE_FEATURE_VI_WIN_RESIZE)
|
---|
457 | get_terminal_width_height(0, &columns, &rows);
|
---|
458 | new_screen(rows, columns); // get memory for virtual screen
|
---|
459 | init_text_buffer(fn);
|
---|
460 |
|
---|
461 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
462 | YDreg = 26; // default Yank/Delete reg
|
---|
463 | Ureg = 27; // hold orig line for "U" cmd
|
---|
464 | mark[26] = mark[27] = text; // init "previous context"
|
---|
465 | #endif
|
---|
466 |
|
---|
467 | last_forward_char = last_input_char = '\0';
|
---|
468 | crow = 0;
|
---|
469 | ccol = 0;
|
---|
470 |
|
---|
471 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
472 | catch_sig(0);
|
---|
473 | signal(SIGWINCH, winch_sig);
|
---|
474 | signal(SIGTSTP, suspend_sig);
|
---|
475 | sig = setjmp(restart);
|
---|
476 | if (sig != 0) {
|
---|
477 | screenbegin = dot = text;
|
---|
478 | }
|
---|
479 | #endif
|
---|
480 |
|
---|
481 | cmd_mode = 0; // 0=command 1=insert 2='R'eplace
|
---|
482 | cmdcnt = 0;
|
---|
483 | tabstop = 8;
|
---|
484 | offset = 0; // no horizontal offset
|
---|
485 | c = '\0';
|
---|
486 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
487 | free(last_modifying_cmd);
|
---|
488 | free(ioq_start);
|
---|
489 | ioq = ioq_start = last_modifying_cmd = NULL;
|
---|
490 | adding2q = 0;
|
---|
491 | #endif
|
---|
492 | redraw(FALSE); // dont force every col re-draw
|
---|
493 |
|
---|
494 | #if ENABLE_FEATURE_VI_COLON
|
---|
495 | {
|
---|
496 | char *p, *q;
|
---|
497 | int n = 0;
|
---|
498 |
|
---|
499 | while ((p = initial_cmds[n])) {
|
---|
500 | do {
|
---|
501 | q = p;
|
---|
502 | p = strchr(q,'\n');
|
---|
503 | if (p)
|
---|
504 | while (*p == '\n')
|
---|
505 | *p++ = '\0';
|
---|
506 | if (*q)
|
---|
507 | colon(q);
|
---|
508 | } while (p);
|
---|
509 | free(initial_cmds[n]);
|
---|
510 | initial_cmds[n] = NULL;
|
---|
511 | n++;
|
---|
512 | }
|
---|
513 | }
|
---|
514 | #endif
|
---|
515 | //------This is the main Vi cmd handling loop -----------------------
|
---|
516 | while (editing > 0) {
|
---|
517 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
518 | if (crashme > 0) {
|
---|
519 | if ((end - text) > 1) {
|
---|
520 | crash_dummy(); // generate a random command
|
---|
521 | } else {
|
---|
522 | crashme = 0;
|
---|
523 | dot = string_insert(text, "\n\n##### Ran out of text to work on. #####\n\n"); // insert the string
|
---|
524 | refresh(FALSE);
|
---|
525 | }
|
---|
526 | }
|
---|
527 | #endif
|
---|
528 | last_input_char = c = get_one_char(); // get a cmd from user
|
---|
529 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
530 | // save a copy of the current line- for the 'U" command
|
---|
531 | if (begin_line(dot) != cur_line) {
|
---|
532 | cur_line = begin_line(dot);
|
---|
533 | text_yank(begin_line(dot), end_line(dot), Ureg);
|
---|
534 | }
|
---|
535 | #endif
|
---|
536 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
537 | // These are commands that change text[].
|
---|
538 | // Remember the input for the "." command
|
---|
539 | if (!adding2q && ioq_start == 0
|
---|
540 | && strchr(modifying_cmds, c)
|
---|
541 | ) {
|
---|
542 | start_new_cmd_q(c);
|
---|
543 | }
|
---|
544 | #endif
|
---|
545 | do_cmd(c); // execute the user command
|
---|
546 | //
|
---|
547 | // poll to see if there is input already waiting. if we are
|
---|
548 | // not able to display output fast enough to keep up, skip
|
---|
549 | // the display update until we catch up with input.
|
---|
550 | if (mysleep(0) == 0) {
|
---|
551 | // no input pending- so update output
|
---|
552 | refresh(FALSE);
|
---|
553 | show_status_line();
|
---|
554 | }
|
---|
555 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
556 | if (crashme > 0)
|
---|
557 | crash_test(); // test editor variables
|
---|
558 | #endif
|
---|
559 | }
|
---|
560 | //-------------------------------------------------------------------
|
---|
561 |
|
---|
562 | place_cursor(rows, 0, FALSE); // go to bottom of screen
|
---|
563 | clear_to_eol(); // Erase to end of line
|
---|
564 | cookmode();
|
---|
565 | }
|
---|
566 |
|
---|
567 | //----- The Colon commands -------------------------------------
|
---|
568 | #if ENABLE_FEATURE_VI_COLON
|
---|
569 | static char *get_one_address(char * p, int *addr) // get colon addr, if present
|
---|
570 | {
|
---|
571 | int st;
|
---|
572 | char *q;
|
---|
573 |
|
---|
574 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
575 | char c;
|
---|
576 | #endif
|
---|
577 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
578 | char *pat, buf[MAX_LINELEN];
|
---|
579 | #endif
|
---|
580 |
|
---|
581 | *addr = -1; // assume no addr
|
---|
582 | if (*p == '.') { // the current line
|
---|
583 | p++;
|
---|
584 | q = begin_line(dot);
|
---|
585 | *addr = count_lines(text, q);
|
---|
586 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
587 | } else if (*p == '\'') { // is this a mark addr
|
---|
588 | p++;
|
---|
589 | c = tolower(*p);
|
---|
590 | p++;
|
---|
591 | if (c >= 'a' && c <= 'z') {
|
---|
592 | // we have a mark
|
---|
593 | c = c - 'a';
|
---|
594 | q = mark[(unsigned char) c];
|
---|
595 | if (q != NULL) { // is mark valid
|
---|
596 | *addr = count_lines(text, q); // count lines
|
---|
597 | }
|
---|
598 | }
|
---|
599 | #endif
|
---|
600 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
601 | } else if (*p == '/') { // a search pattern
|
---|
602 | q = buf;
|
---|
603 | for (p++; *p; p++) {
|
---|
604 | if (*p == '/')
|
---|
605 | break;
|
---|
606 | *q++ = *p;
|
---|
607 | *q = '\0';
|
---|
608 | }
|
---|
609 | pat = xstrdup(buf); // save copy of pattern
|
---|
610 | if (*p == '/')
|
---|
611 | p++;
|
---|
612 | q = char_search(dot, pat, FORWARD, FULL);
|
---|
613 | if (q != NULL) {
|
---|
614 | *addr = count_lines(text, q);
|
---|
615 | }
|
---|
616 | free(pat);
|
---|
617 | #endif
|
---|
618 | } else if (*p == '$') { // the last line in file
|
---|
619 | p++;
|
---|
620 | q = begin_line(end - 1);
|
---|
621 | *addr = count_lines(text, q);
|
---|
622 | } else if (isdigit(*p)) { // specific line number
|
---|
623 | sscanf(p, "%d%n", addr, &st);
|
---|
624 | p += st;
|
---|
625 | } else { // I don't reconise this
|
---|
626 | // unrecognised address- assume -1
|
---|
627 | *addr = -1;
|
---|
628 | }
|
---|
629 | return p;
|
---|
630 | }
|
---|
631 |
|
---|
632 | static char *get_address(char *p, int *b, int *e) // get two colon addrs, if present
|
---|
633 | {
|
---|
634 | //----- get the address' i.e., 1,3 'a,'b -----
|
---|
635 | // get FIRST addr, if present
|
---|
636 | while (isblank(*p))
|
---|
637 | p++; // skip over leading spaces
|
---|
638 | if (*p == '%') { // alias for 1,$
|
---|
639 | p++;
|
---|
640 | *b = 1;
|
---|
641 | *e = count_lines(text, end-1);
|
---|
642 | goto ga0;
|
---|
643 | }
|
---|
644 | p = get_one_address(p, b);
|
---|
645 | while (isblank(*p))
|
---|
646 | p++;
|
---|
647 | if (*p == ',') { // is there a address separator
|
---|
648 | p++;
|
---|
649 | while (isblank(*p))
|
---|
650 | p++;
|
---|
651 | // get SECOND addr, if present
|
---|
652 | p = get_one_address(p, e);
|
---|
653 | }
|
---|
654 | ga0:
|
---|
655 | while (isblank(*p))
|
---|
656 | p++; // skip over trailing spaces
|
---|
657 | return p;
|
---|
658 | }
|
---|
659 |
|
---|
660 | #if ENABLE_FEATURE_VI_SET && ENABLE_FEATURE_VI_SETOPTS
|
---|
661 | static void setops(const char *args, const char *opname, int flg_no,
|
---|
662 | const char *short_opname, int opt)
|
---|
663 | {
|
---|
664 | const char *a = args + flg_no;
|
---|
665 | int l = strlen(opname) - 1; /* opname have + ' ' */
|
---|
666 |
|
---|
667 | if (strncasecmp(a, opname, l) == 0
|
---|
668 | || strncasecmp(a, short_opname, 2) == 0
|
---|
669 | ) {
|
---|
670 | if (flg_no)
|
---|
671 | vi_setops &= ~opt;
|
---|
672 | else
|
---|
673 | vi_setops |= opt;
|
---|
674 | }
|
---|
675 | }
|
---|
676 | #endif
|
---|
677 |
|
---|
678 | static void colon(char * buf)
|
---|
679 | {
|
---|
680 | char c, *orig_buf, *buf1, *q, *r;
|
---|
681 | char *fn, cmd[MAX_LINELEN], args[MAX_LINELEN];
|
---|
682 | int i, l, li, ch, b, e;
|
---|
683 | int useforce = FALSE, forced = FALSE;
|
---|
684 |
|
---|
685 | // :3154 // if (-e line 3154) goto it else stay put
|
---|
686 | // :4,33w! foo // write a portion of buffer to file "foo"
|
---|
687 | // :w // write all of buffer to current file
|
---|
688 | // :q // quit
|
---|
689 | // :q! // quit- dont care about modified file
|
---|
690 | // :'a,'z!sort -u // filter block through sort
|
---|
691 | // :'f // goto mark "f"
|
---|
692 | // :'fl // list literal the mark "f" line
|
---|
693 | // :.r bar // read file "bar" into buffer before dot
|
---|
694 | // :/123/,/abc/d // delete lines from "123" line to "abc" line
|
---|
695 | // :/xyz/ // goto the "xyz" line
|
---|
696 | // :s/find/replace/ // substitute pattern "find" with "replace"
|
---|
697 | // :!<cmd> // run <cmd> then return
|
---|
698 | //
|
---|
699 |
|
---|
700 | if (!buf[0])
|
---|
701 | goto vc1;
|
---|
702 | if (*buf == ':')
|
---|
703 | buf++; // move past the ':'
|
---|
704 |
|
---|
705 | li = ch = i = 0;
|
---|
706 | b = e = -1;
|
---|
707 | q = text; // assume 1,$ for the range
|
---|
708 | r = end - 1;
|
---|
709 | li = count_lines(text, end - 1);
|
---|
710 | fn = current_filename; // default to current file
|
---|
711 | memset(cmd, '\0', MAX_LINELEN); // clear cmd[]
|
---|
712 | memset(args, '\0', MAX_LINELEN); // clear args[]
|
---|
713 |
|
---|
714 | // look for optional address(es) :. :1 :1,9 :'q,'a :%
|
---|
715 | buf = get_address(buf, &b, &e);
|
---|
716 |
|
---|
717 | // remember orig command line
|
---|
718 | orig_buf = buf;
|
---|
719 |
|
---|
720 | // get the COMMAND into cmd[]
|
---|
721 | buf1 = cmd;
|
---|
722 | while (*buf != '\0') {
|
---|
723 | if (isspace(*buf))
|
---|
724 | break;
|
---|
725 | *buf1++ = *buf++;
|
---|
726 | }
|
---|
727 | // get any ARGuments
|
---|
728 | while (isblank(*buf))
|
---|
729 | buf++;
|
---|
730 | strcpy(args, buf);
|
---|
731 | buf1 = last_char_is(cmd, '!');
|
---|
732 | if (buf1) {
|
---|
733 | useforce = TRUE;
|
---|
734 | *buf1 = '\0'; // get rid of !
|
---|
735 | }
|
---|
736 | if (b >= 0) {
|
---|
737 | // if there is only one addr, then the addr
|
---|
738 | // is the line number of the single line the
|
---|
739 | // user wants. So, reset the end
|
---|
740 | // pointer to point at end of the "b" line
|
---|
741 | q = find_line(b); // what line is #b
|
---|
742 | r = end_line(q);
|
---|
743 | li = 1;
|
---|
744 | }
|
---|
745 | if (e >= 0) {
|
---|
746 | // we were given two addrs. change the
|
---|
747 | // end pointer to the addr given by user.
|
---|
748 | r = find_line(e); // what line is #e
|
---|
749 | r = end_line(r);
|
---|
750 | li = e - b + 1;
|
---|
751 | }
|
---|
752 | // ------------ now look for the command ------------
|
---|
753 | i = strlen(cmd);
|
---|
754 | if (i == 0) { // :123CR goto line #123
|
---|
755 | if (b >= 0) {
|
---|
756 | dot = find_line(b); // what line is #b
|
---|
757 | dot_skip_over_ws();
|
---|
758 | }
|
---|
759 | }
|
---|
760 | #if ENABLE_FEATURE_ALLOW_EXEC
|
---|
761 | else if (strncmp(cmd, "!", 1) == 0) { // run a cmd
|
---|
762 | int retcode;
|
---|
763 | // :!ls run the <cmd>
|
---|
764 | alarm(0); // wait for input- no alarms
|
---|
765 | place_cursor(rows - 1, 0, FALSE); // go to Status line
|
---|
766 | clear_to_eol(); // clear the line
|
---|
767 | cookmode();
|
---|
768 | retcode = system(orig_buf + 1); // run the cmd
|
---|
769 | if (retcode)
|
---|
770 | printf("\nshell returned %i\n\n", retcode);
|
---|
771 | rawmode();
|
---|
772 | Hit_Return(); // let user see results
|
---|
773 | alarm(3); // done waiting for input
|
---|
774 | }
|
---|
775 | #endif
|
---|
776 | else if (strncmp(cmd, "=", i) == 0) { // where is the address
|
---|
777 | if (b < 0) { // no addr given- use defaults
|
---|
778 | b = e = count_lines(text, dot);
|
---|
779 | }
|
---|
780 | psb("%d", b);
|
---|
781 | } else if (strncasecmp(cmd, "delete", i) == 0) { // delete lines
|
---|
782 | if (b < 0) { // no addr given- use defaults
|
---|
783 | q = begin_line(dot); // assume .,. for the range
|
---|
784 | r = end_line(dot);
|
---|
785 | }
|
---|
786 | dot = yank_delete(q, r, 1, YANKDEL); // save, then delete lines
|
---|
787 | dot_skip_over_ws();
|
---|
788 | } else if (strncasecmp(cmd, "edit", i) == 0) { // Edit a file
|
---|
789 | // don't edit, if the current file has been modified
|
---|
790 | if (file_modified && ! useforce) {
|
---|
791 | psbs("No write since last change (:edit! overrides)");
|
---|
792 | goto vc1;
|
---|
793 | }
|
---|
794 | if (args[0]) {
|
---|
795 | // the user supplied a file name
|
---|
796 | fn = args;
|
---|
797 | } else if (current_filename && current_filename[0]) {
|
---|
798 | // no user supplied name- use the current filename
|
---|
799 | // fn = current_filename; was set by default
|
---|
800 | } else {
|
---|
801 | // no user file name, no current name- punt
|
---|
802 | psbs("No current filename");
|
---|
803 | goto vc1;
|
---|
804 | }
|
---|
805 |
|
---|
806 | if (init_text_buffer(fn) < 0)
|
---|
807 | goto vc1;
|
---|
808 |
|
---|
809 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
810 | if (Ureg >= 0 && Ureg < 28 && reg[Ureg] != 0) {
|
---|
811 | free(reg[Ureg]); // free orig line reg- for 'U'
|
---|
812 | reg[Ureg]= 0;
|
---|
813 | }
|
---|
814 | if (YDreg >= 0 && YDreg < 28 && reg[YDreg] != 0) {
|
---|
815 | free(reg[YDreg]); // free default yank/delete register
|
---|
816 | reg[YDreg]= 0;
|
---|
817 | }
|
---|
818 | #endif
|
---|
819 | // how many lines in text[]?
|
---|
820 | li = count_lines(text, end - 1);
|
---|
821 | psb("\"%s\"%s"
|
---|
822 | USE_FEATURE_VI_READONLY("%s")
|
---|
823 | " %dL, %dC", current_filename,
|
---|
824 | (file_size(fn) < 0 ? " [New file]" : ""),
|
---|
825 | USE_FEATURE_VI_READONLY(
|
---|
826 | ((readonly_mode) ? " [Readonly]" : ""),
|
---|
827 | )
|
---|
828 | li, ch);
|
---|
829 | } else if (strncasecmp(cmd, "file", i) == 0) { // what File is this
|
---|
830 | if (b != -1 || e != -1) {
|
---|
831 | ni("No address allowed on this command");
|
---|
832 | goto vc1;
|
---|
833 | }
|
---|
834 | if (args[0]) {
|
---|
835 | // user wants a new filename
|
---|
836 | free(current_filename);
|
---|
837 | current_filename = xstrdup(args);
|
---|
838 | } else {
|
---|
839 | // user wants file status info
|
---|
840 | last_status_cksum = 0; // force status update
|
---|
841 | }
|
---|
842 | } else if (strncasecmp(cmd, "features", i) == 0) { // what features are available
|
---|
843 | // print out values of all features
|
---|
844 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen
|
---|
845 | clear_to_eol(); // clear the line
|
---|
846 | cookmode();
|
---|
847 | show_help();
|
---|
848 | rawmode();
|
---|
849 | Hit_Return();
|
---|
850 | } else if (strncasecmp(cmd, "list", i) == 0) { // literal print line
|
---|
851 | if (b < 0) { // no addr given- use defaults
|
---|
852 | q = begin_line(dot); // assume .,. for the range
|
---|
853 | r = end_line(dot);
|
---|
854 | }
|
---|
855 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen
|
---|
856 | clear_to_eol(); // clear the line
|
---|
857 | puts("\r");
|
---|
858 | for (; q <= r; q++) {
|
---|
859 | int c_is_no_print;
|
---|
860 |
|
---|
861 | c = *q;
|
---|
862 | c_is_no_print = (c & 0x80) && !Isprint(c);
|
---|
863 | if (c_is_no_print) {
|
---|
864 | c = '.';
|
---|
865 | standout_start();
|
---|
866 | }
|
---|
867 | if (c == '\n') {
|
---|
868 | write1("$\r");
|
---|
869 | } else if (c < ' ' || c == 127) {
|
---|
870 | putchar('^');
|
---|
871 | if (c == 127)
|
---|
872 | c = '?';
|
---|
873 | else
|
---|
874 | c += '@';
|
---|
875 | }
|
---|
876 | putchar(c);
|
---|
877 | if (c_is_no_print)
|
---|
878 | standout_end();
|
---|
879 | }
|
---|
880 | #if ENABLE_FEATURE_VI_SET
|
---|
881 | vc2:
|
---|
882 | #endif
|
---|
883 | Hit_Return();
|
---|
884 | } else if (strncasecmp(cmd, "quit", i) == 0 // Quit
|
---|
885 | || strncasecmp(cmd, "next", i) == 0 // edit next file
|
---|
886 | ) {
|
---|
887 | if (useforce) {
|
---|
888 | // force end of argv list
|
---|
889 | if (*cmd == 'q') {
|
---|
890 | optind = save_argc;
|
---|
891 | }
|
---|
892 | editing = 0;
|
---|
893 | goto vc1;
|
---|
894 | }
|
---|
895 | // don't exit if the file been modified
|
---|
896 | if (file_modified) {
|
---|
897 | psbs("No write since last change (:%s! overrides)",
|
---|
898 | (*cmd == 'q' ? "quit" : "next"));
|
---|
899 | goto vc1;
|
---|
900 | }
|
---|
901 | // are there other file to edit
|
---|
902 | if (*cmd == 'q' && optind < save_argc - 1) {
|
---|
903 | psbs("%d more file to edit", (save_argc - optind - 1));
|
---|
904 | goto vc1;
|
---|
905 | }
|
---|
906 | if (*cmd == 'n' && optind >= save_argc - 1) {
|
---|
907 | psbs("No more files to edit");
|
---|
908 | goto vc1;
|
---|
909 | }
|
---|
910 | editing = 0;
|
---|
911 | } else if (strncasecmp(cmd, "read", i) == 0) { // read file into text[]
|
---|
912 | fn = args;
|
---|
913 | if (!fn[0]) {
|
---|
914 | psbs("No filename given");
|
---|
915 | goto vc1;
|
---|
916 | }
|
---|
917 | if (b < 0) { // no addr given- use defaults
|
---|
918 | q = begin_line(dot); // assume "dot"
|
---|
919 | }
|
---|
920 | // read after current line- unless user said ":0r foo"
|
---|
921 | if (b != 0)
|
---|
922 | q = next_line(q);
|
---|
923 | ch = file_insert(fn, q USE_FEATURE_VI_READONLY(, 0));
|
---|
924 | if (ch < 0)
|
---|
925 | goto vc1; // nothing was inserted
|
---|
926 | // how many lines in text[]?
|
---|
927 | li = count_lines(q, q + ch - 1);
|
---|
928 | psb("\"%s\""
|
---|
929 | USE_FEATURE_VI_READONLY("%s")
|
---|
930 | " %dL, %dC", fn,
|
---|
931 | USE_FEATURE_VI_READONLY((readonly_mode ? " [Readonly]" : ""),)
|
---|
932 | li, ch);
|
---|
933 | if (ch > 0) {
|
---|
934 | // if the insert is before "dot" then we need to update
|
---|
935 | if (q <= dot)
|
---|
936 | dot += ch;
|
---|
937 | file_modified++;
|
---|
938 | }
|
---|
939 | } else if (strncasecmp(cmd, "rewind", i) == 0) { // rewind cmd line args
|
---|
940 | if (file_modified && ! useforce) {
|
---|
941 | psbs("No write since last change (:rewind! overrides)");
|
---|
942 | } else {
|
---|
943 | // reset the filenames to edit
|
---|
944 | optind = fn_start - 1;
|
---|
945 | editing = 0;
|
---|
946 | }
|
---|
947 | #if ENABLE_FEATURE_VI_SET
|
---|
948 | } else if (strncasecmp(cmd, "set", i) == 0) { // set or clear features
|
---|
949 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
950 | char *argp;
|
---|
951 | #endif
|
---|
952 | i = 0; // offset into args
|
---|
953 | // only blank is regarded as args delmiter. What about tab '\t' ?
|
---|
954 | if (!args[0] || strcasecmp(args, "all") == 0) {
|
---|
955 | // print out values of all options
|
---|
956 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen
|
---|
957 | clear_to_eol(); // clear the line
|
---|
958 | printf("----------------------------------------\r\n");
|
---|
959 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
960 | if (!autoindent)
|
---|
961 | printf("no");
|
---|
962 | printf("autoindent ");
|
---|
963 | if (!err_method)
|
---|
964 | printf("no");
|
---|
965 | printf("flash ");
|
---|
966 | if (!ignorecase)
|
---|
967 | printf("no");
|
---|
968 | printf("ignorecase ");
|
---|
969 | if (!showmatch)
|
---|
970 | printf("no");
|
---|
971 | printf("showmatch ");
|
---|
972 | printf("tabstop=%d ", tabstop);
|
---|
973 | #endif
|
---|
974 | printf("\r\n");
|
---|
975 | goto vc2;
|
---|
976 | }
|
---|
977 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
978 | argp = args;
|
---|
979 | while (*argp) {
|
---|
980 | if (strncasecmp(argp, "no", 2) == 0)
|
---|
981 | i = 2; // ":set noautoindent"
|
---|
982 | setops(argp, "autoindent ", i, "ai", VI_AUTOINDENT);
|
---|
983 | setops(argp, "flash ", i, "fl", VI_ERR_METHOD);
|
---|
984 | setops(argp, "ignorecase ", i, "ic", VI_IGNORECASE);
|
---|
985 | setops(argp, "showmatch ", i, "ic", VI_SHOWMATCH);
|
---|
986 | /* tabstopXXXX */
|
---|
987 | if (strncasecmp(argp + i, "tabstop=%d ", 7) == 0) {
|
---|
988 | sscanf(strchr(argp + i, '='), "tabstop=%d" + 7, &ch);
|
---|
989 | if (ch > 0 && ch < columns - 1)
|
---|
990 | tabstop = ch;
|
---|
991 | }
|
---|
992 | while (*argp && *argp != ' ')
|
---|
993 | argp++; // skip to arg delimiter (i.e. blank)
|
---|
994 | while (*argp && *argp == ' ')
|
---|
995 | argp++; // skip all delimiting blanks
|
---|
996 | }
|
---|
997 | #endif /* FEATURE_VI_SETOPTS */
|
---|
998 | #endif /* FEATURE_VI_SET */
|
---|
999 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
1000 | } else if (strncasecmp(cmd, "s", 1) == 0) { // substitute a pattern with a replacement pattern
|
---|
1001 | char *ls, *F, *R;
|
---|
1002 | int gflag;
|
---|
1003 |
|
---|
1004 | // F points to the "find" pattern
|
---|
1005 | // R points to the "replace" pattern
|
---|
1006 | // replace the cmd line delimiters "/" with NULLs
|
---|
1007 | gflag = 0; // global replace flag
|
---|
1008 | c = orig_buf[1]; // what is the delimiter
|
---|
1009 | F = orig_buf + 2; // start of "find"
|
---|
1010 | R = strchr(F, c); // middle delimiter
|
---|
1011 | if (!R) goto colon_s_fail;
|
---|
1012 | *R++ = '\0'; // terminate "find"
|
---|
1013 | buf1 = strchr(R, c);
|
---|
1014 | if (!buf1) goto colon_s_fail;
|
---|
1015 | *buf1++ = '\0'; // terminate "replace"
|
---|
1016 | if (*buf1 == 'g') { // :s/foo/bar/g
|
---|
1017 | buf1++;
|
---|
1018 | gflag++; // turn on gflag
|
---|
1019 | }
|
---|
1020 | q = begin_line(q);
|
---|
1021 | if (b < 0) { // maybe :s/foo/bar/
|
---|
1022 | q = begin_line(dot); // start with cur line
|
---|
1023 | b = count_lines(text, q); // cur line number
|
---|
1024 | }
|
---|
1025 | if (e < 0)
|
---|
1026 | e = b; // maybe :.s/foo/bar/
|
---|
1027 | for (i = b; i <= e; i++) { // so, :20,23 s \0 find \0 replace \0
|
---|
1028 | ls = q; // orig line start
|
---|
1029 | vc4:
|
---|
1030 | buf1 = char_search(q, F, FORWARD, LIMITED); // search cur line only for "find"
|
---|
1031 | if (buf1) {
|
---|
1032 | // we found the "find" pattern - delete it
|
---|
1033 | text_hole_delete(buf1, buf1 + strlen(F) - 1);
|
---|
1034 | // inset the "replace" patern
|
---|
1035 | string_insert(buf1, R); // insert the string
|
---|
1036 | // check for "global" :s/foo/bar/g
|
---|
1037 | if (gflag == 1) {
|
---|
1038 | if ((buf1 + strlen(R)) < end_line(ls)) {
|
---|
1039 | q = buf1 + strlen(R);
|
---|
1040 | goto vc4; // don't let q move past cur line
|
---|
1041 | }
|
---|
1042 | }
|
---|
1043 | }
|
---|
1044 | q = next_line(ls);
|
---|
1045 | }
|
---|
1046 | #endif /* FEATURE_VI_SEARCH */
|
---|
1047 | } else if (strncasecmp(cmd, "version", i) == 0) { // show software version
|
---|
1048 | psb("%s", BB_VER " " BB_BT);
|
---|
1049 | } else if (strncasecmp(cmd, "write", i) == 0 // write text to file
|
---|
1050 | || strncasecmp(cmd, "wq", i) == 0
|
---|
1051 | || strncasecmp(cmd, "wn", i) == 0
|
---|
1052 | || strncasecmp(cmd, "x", i) == 0
|
---|
1053 | ) {
|
---|
1054 | // is there a file name to write to?
|
---|
1055 | if (args[0]) {
|
---|
1056 | fn = args;
|
---|
1057 | }
|
---|
1058 | #if ENABLE_FEATURE_VI_READONLY
|
---|
1059 | if (readonly_mode && !useforce) {
|
---|
1060 | psbs("\"%s\" File is read only", fn);
|
---|
1061 | goto vc3;
|
---|
1062 | }
|
---|
1063 | #endif
|
---|
1064 | // how many lines in text[]?
|
---|
1065 | li = count_lines(q, r);
|
---|
1066 | ch = r - q + 1;
|
---|
1067 | // see if file exists- if not, its just a new file request
|
---|
1068 | if (useforce) {
|
---|
1069 | // if "fn" is not write-able, chmod u+w
|
---|
1070 | // sprintf(syscmd, "chmod u+w %s", fn);
|
---|
1071 | // system(syscmd);
|
---|
1072 | forced = TRUE;
|
---|
1073 | }
|
---|
1074 | l = file_write(fn, q, r);
|
---|
1075 | if (useforce && forced) {
|
---|
1076 | // chmod u-w
|
---|
1077 | // sprintf(syscmd, "chmod u-w %s", fn);
|
---|
1078 | // system(syscmd);
|
---|
1079 | forced = FALSE;
|
---|
1080 | }
|
---|
1081 | if (l < 0) {
|
---|
1082 | if (l == -1)
|
---|
1083 | psbs("\"%s\" %s", fn, strerror(errno));
|
---|
1084 | } else {
|
---|
1085 | psb("\"%s\" %dL, %dC", fn, li, l);
|
---|
1086 | if (q == text && r == end - 1 && l == ch) {
|
---|
1087 | file_modified = 0;
|
---|
1088 | last_file_modified = -1;
|
---|
1089 | }
|
---|
1090 | if ((cmd[0] == 'x' || cmd[1] == 'q' || cmd[1] == 'n' ||
|
---|
1091 | cmd[0] == 'X' || cmd[1] == 'Q' || cmd[1] == 'N')
|
---|
1092 | && l == ch) {
|
---|
1093 | editing = 0;
|
---|
1094 | }
|
---|
1095 | }
|
---|
1096 | #if ENABLE_FEATURE_VI_READONLY
|
---|
1097 | vc3:;
|
---|
1098 | #endif
|
---|
1099 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
1100 | } else if (strncasecmp(cmd, "yank", i) == 0) { // yank lines
|
---|
1101 | if (b < 0) { // no addr given- use defaults
|
---|
1102 | q = begin_line(dot); // assume .,. for the range
|
---|
1103 | r = end_line(dot);
|
---|
1104 | }
|
---|
1105 | text_yank(q, r, YDreg);
|
---|
1106 | li = count_lines(q, r);
|
---|
1107 | psb("Yank %d lines (%d chars) into [%c]",
|
---|
1108 | li, strlen(reg[YDreg]), what_reg());
|
---|
1109 | #endif
|
---|
1110 | } else {
|
---|
1111 | // cmd unknown
|
---|
1112 | ni(cmd);
|
---|
1113 | }
|
---|
1114 | vc1:
|
---|
1115 | dot = bound_dot(dot); // make sure "dot" is valid
|
---|
1116 | return;
|
---|
1117 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
1118 | colon_s_fail:
|
---|
1119 | psb(":s expression missing delimiters");
|
---|
1120 | #endif
|
---|
1121 | }
|
---|
1122 |
|
---|
1123 | #endif /* FEATURE_VI_COLON */
|
---|
1124 |
|
---|
1125 | static void Hit_Return(void)
|
---|
1126 | {
|
---|
1127 | char c;
|
---|
1128 |
|
---|
1129 | standout_start(); // start reverse video
|
---|
1130 | write1("[Hit return to continue]");
|
---|
1131 | standout_end(); // end reverse video
|
---|
1132 | while ((c = get_one_char()) != '\n' && c != '\r') /*do nothing */
|
---|
1133 | ;
|
---|
1134 | redraw(TRUE); // force redraw all
|
---|
1135 | }
|
---|
1136 |
|
---|
1137 | static int next_tabstop(int col)
|
---|
1138 | {
|
---|
1139 | return col + ((tabstop - 1) - (col % tabstop));
|
---|
1140 | }
|
---|
1141 |
|
---|
1142 | //----- Synchronize the cursor to Dot --------------------------
|
---|
1143 | static void sync_cursor(char * d, int *row, int *col)
|
---|
1144 | {
|
---|
1145 | char *beg_cur; // begin and end of "d" line
|
---|
1146 | char *end_scr; // begin and end of screen
|
---|
1147 | char *tp;
|
---|
1148 | int cnt, ro, co;
|
---|
1149 |
|
---|
1150 | beg_cur = begin_line(d); // first char of cur line
|
---|
1151 |
|
---|
1152 | end_scr = end_screen(); // last char of screen
|
---|
1153 |
|
---|
1154 | if (beg_cur < screenbegin) {
|
---|
1155 | // "d" is before top line on screen
|
---|
1156 | // how many lines do we have to move
|
---|
1157 | cnt = count_lines(beg_cur, screenbegin);
|
---|
1158 | sc1:
|
---|
1159 | screenbegin = beg_cur;
|
---|
1160 | if (cnt > (rows - 1) / 2) {
|
---|
1161 | // we moved too many lines. put "dot" in middle of screen
|
---|
1162 | for (cnt = 0; cnt < (rows - 1) / 2; cnt++) {
|
---|
1163 | screenbegin = prev_line(screenbegin);
|
---|
1164 | }
|
---|
1165 | }
|
---|
1166 | } else if (beg_cur > end_scr) {
|
---|
1167 | // "d" is after bottom line on screen
|
---|
1168 | // how many lines do we have to move
|
---|
1169 | cnt = count_lines(end_scr, beg_cur);
|
---|
1170 | if (cnt > (rows - 1) / 2)
|
---|
1171 | goto sc1; // too many lines
|
---|
1172 | for (ro = 0; ro < cnt - 1; ro++) {
|
---|
1173 | // move screen begin the same amount
|
---|
1174 | screenbegin = next_line(screenbegin);
|
---|
1175 | // now, move the end of screen
|
---|
1176 | end_scr = next_line(end_scr);
|
---|
1177 | end_scr = end_line(end_scr);
|
---|
1178 | }
|
---|
1179 | }
|
---|
1180 | // "d" is on screen- find out which row
|
---|
1181 | tp = screenbegin;
|
---|
1182 | for (ro = 0; ro < rows - 1; ro++) { // drive "ro" to correct row
|
---|
1183 | if (tp == beg_cur)
|
---|
1184 | break;
|
---|
1185 | tp = next_line(tp);
|
---|
1186 | }
|
---|
1187 |
|
---|
1188 | // find out what col "d" is on
|
---|
1189 | co = 0;
|
---|
1190 | do { // drive "co" to correct column
|
---|
1191 | if (*tp == '\n' || *tp == '\0')
|
---|
1192 | break;
|
---|
1193 | if (*tp == '\t') {
|
---|
1194 | if (d == tp && cmd_mode) { /* handle tabs like real vi */
|
---|
1195 | break;
|
---|
1196 | } else {
|
---|
1197 | co = next_tabstop(co);
|
---|
1198 | }
|
---|
1199 | } else if (*tp < ' ' || *tp == 127) {
|
---|
1200 | co++; // display as ^X, use 2 columns
|
---|
1201 | }
|
---|
1202 | } while (tp++ < d && ++co);
|
---|
1203 |
|
---|
1204 | // "co" is the column where "dot" is.
|
---|
1205 | // The screen has "columns" columns.
|
---|
1206 | // The currently displayed columns are 0+offset -- columns+ofset
|
---|
1207 | // |-------------------------------------------------------------|
|
---|
1208 | // ^ ^ ^
|
---|
1209 | // offset | |------- columns ----------------|
|
---|
1210 | //
|
---|
1211 | // If "co" is already in this range then we do not have to adjust offset
|
---|
1212 | // but, we do have to subtract the "offset" bias from "co".
|
---|
1213 | // If "co" is outside this range then we have to change "offset".
|
---|
1214 | // If the first char of a line is a tab the cursor will try to stay
|
---|
1215 | // in column 7, but we have to set offset to 0.
|
---|
1216 |
|
---|
1217 | if (co < 0 + offset) {
|
---|
1218 | offset = co;
|
---|
1219 | }
|
---|
1220 | if (co >= columns + offset) {
|
---|
1221 | offset = co - columns + 1;
|
---|
1222 | }
|
---|
1223 | // if the first char of the line is a tab, and "dot" is sitting on it
|
---|
1224 | // force offset to 0.
|
---|
1225 | if (d == beg_cur && *d == '\t') {
|
---|
1226 | offset = 0;
|
---|
1227 | }
|
---|
1228 | co -= offset;
|
---|
1229 |
|
---|
1230 | *row = ro;
|
---|
1231 | *col = co;
|
---|
1232 | }
|
---|
1233 |
|
---|
1234 | //----- Text Movement Routines ---------------------------------
|
---|
1235 | static char *begin_line(char * p) // return pointer to first char cur line
|
---|
1236 | {
|
---|
1237 | while (p > text && p[-1] != '\n')
|
---|
1238 | p--; // go to cur line B-o-l
|
---|
1239 | return p;
|
---|
1240 | }
|
---|
1241 |
|
---|
1242 | static char *end_line(char * p) // return pointer to NL of cur line line
|
---|
1243 | {
|
---|
1244 | while (p < end - 1 && *p != '\n')
|
---|
1245 | p++; // go to cur line E-o-l
|
---|
1246 | return p;
|
---|
1247 | }
|
---|
1248 |
|
---|
1249 | static inline char *dollar_line(char * p) // return pointer to just before NL line
|
---|
1250 | {
|
---|
1251 | while (p < end - 1 && *p != '\n')
|
---|
1252 | p++; // go to cur line E-o-l
|
---|
1253 | // Try to stay off of the Newline
|
---|
1254 | if (*p == '\n' && (p - begin_line(p)) > 0)
|
---|
1255 | p--;
|
---|
1256 | return p;
|
---|
1257 | }
|
---|
1258 |
|
---|
1259 | static char *prev_line(char * p) // return pointer first char prev line
|
---|
1260 | {
|
---|
1261 | p = begin_line(p); // goto begining of cur line
|
---|
1262 | if (p[-1] == '\n' && p > text)
|
---|
1263 | p--; // step to prev line
|
---|
1264 | p = begin_line(p); // goto begining of prev line
|
---|
1265 | return p;
|
---|
1266 | }
|
---|
1267 |
|
---|
1268 | static char *next_line(char * p) // return pointer first char next line
|
---|
1269 | {
|
---|
1270 | p = end_line(p);
|
---|
1271 | if (*p == '\n' && p < end - 1)
|
---|
1272 | p++; // step to next line
|
---|
1273 | return p;
|
---|
1274 | }
|
---|
1275 |
|
---|
1276 | //----- Text Information Routines ------------------------------
|
---|
1277 | static char *end_screen(void)
|
---|
1278 | {
|
---|
1279 | char *q;
|
---|
1280 | int cnt;
|
---|
1281 |
|
---|
1282 | // find new bottom line
|
---|
1283 | q = screenbegin;
|
---|
1284 | for (cnt = 0; cnt < rows - 2; cnt++)
|
---|
1285 | q = next_line(q);
|
---|
1286 | q = end_line(q);
|
---|
1287 | return q;
|
---|
1288 | }
|
---|
1289 |
|
---|
1290 | static int count_lines(char * start, char * stop) // count line from start to stop
|
---|
1291 | {
|
---|
1292 | char *q;
|
---|
1293 | int cnt;
|
---|
1294 |
|
---|
1295 | if (stop < start) { // start and stop are backwards- reverse them
|
---|
1296 | q = start;
|
---|
1297 | start = stop;
|
---|
1298 | stop = q;
|
---|
1299 | }
|
---|
1300 | cnt = 0;
|
---|
1301 | stop = end_line(stop); // get to end of this line
|
---|
1302 | for (q = start; q <= stop && q <= end - 1; q++) {
|
---|
1303 | if (*q == '\n')
|
---|
1304 | cnt++;
|
---|
1305 | }
|
---|
1306 | return cnt;
|
---|
1307 | }
|
---|
1308 |
|
---|
1309 | static char *find_line(int li) // find begining of line #li
|
---|
1310 | {
|
---|
1311 | char *q;
|
---|
1312 |
|
---|
1313 | for (q = text; li > 1; li--) {
|
---|
1314 | q = next_line(q);
|
---|
1315 | }
|
---|
1316 | return q;
|
---|
1317 | }
|
---|
1318 |
|
---|
1319 | //----- Dot Movement Routines ----------------------------------
|
---|
1320 | static void dot_left(void)
|
---|
1321 | {
|
---|
1322 | if (dot > text && dot[-1] != '\n')
|
---|
1323 | dot--;
|
---|
1324 | }
|
---|
1325 |
|
---|
1326 | static void dot_right(void)
|
---|
1327 | {
|
---|
1328 | if (dot < end - 1 && *dot != '\n')
|
---|
1329 | dot++;
|
---|
1330 | }
|
---|
1331 |
|
---|
1332 | static void dot_begin(void)
|
---|
1333 | {
|
---|
1334 | dot = begin_line(dot); // return pointer to first char cur line
|
---|
1335 | }
|
---|
1336 |
|
---|
1337 | static void dot_end(void)
|
---|
1338 | {
|
---|
1339 | dot = end_line(dot); // return pointer to last char cur line
|
---|
1340 | }
|
---|
1341 |
|
---|
1342 | static char *move_to_col(char * p, int l)
|
---|
1343 | {
|
---|
1344 | int co;
|
---|
1345 |
|
---|
1346 | p = begin_line(p);
|
---|
1347 | co = 0;
|
---|
1348 | do {
|
---|
1349 | if (*p == '\n' || *p == '\0')
|
---|
1350 | break;
|
---|
1351 | if (*p == '\t') {
|
---|
1352 | co = next_tabstop(co);
|
---|
1353 | } else if (*p < ' ' || *p == 127) {
|
---|
1354 | co++; // display as ^X, use 2 columns
|
---|
1355 | }
|
---|
1356 | } while (++co <= l && p++ < end);
|
---|
1357 | return p;
|
---|
1358 | }
|
---|
1359 |
|
---|
1360 | static void dot_next(void)
|
---|
1361 | {
|
---|
1362 | dot = next_line(dot);
|
---|
1363 | }
|
---|
1364 |
|
---|
1365 | static void dot_prev(void)
|
---|
1366 | {
|
---|
1367 | dot = prev_line(dot);
|
---|
1368 | }
|
---|
1369 |
|
---|
1370 | static void dot_scroll(int cnt, int dir)
|
---|
1371 | {
|
---|
1372 | char *q;
|
---|
1373 |
|
---|
1374 | for (; cnt > 0; cnt--) {
|
---|
1375 | if (dir < 0) {
|
---|
1376 | // scroll Backwards
|
---|
1377 | // ctrl-Y scroll up one line
|
---|
1378 | screenbegin = prev_line(screenbegin);
|
---|
1379 | } else {
|
---|
1380 | // scroll Forwards
|
---|
1381 | // ctrl-E scroll down one line
|
---|
1382 | screenbegin = next_line(screenbegin);
|
---|
1383 | }
|
---|
1384 | }
|
---|
1385 | // make sure "dot" stays on the screen so we dont scroll off
|
---|
1386 | if (dot < screenbegin)
|
---|
1387 | dot = screenbegin;
|
---|
1388 | q = end_screen(); // find new bottom line
|
---|
1389 | if (dot > q)
|
---|
1390 | dot = begin_line(q); // is dot is below bottom line?
|
---|
1391 | dot_skip_over_ws();
|
---|
1392 | }
|
---|
1393 |
|
---|
1394 | static void dot_skip_over_ws(void)
|
---|
1395 | {
|
---|
1396 | // skip WS
|
---|
1397 | while (isspace(*dot) && *dot != '\n' && dot < end - 1)
|
---|
1398 | dot++;
|
---|
1399 | }
|
---|
1400 |
|
---|
1401 | static void dot_delete(void) // delete the char at 'dot'
|
---|
1402 | {
|
---|
1403 | text_hole_delete(dot, dot);
|
---|
1404 | }
|
---|
1405 |
|
---|
1406 | static char *bound_dot(char * p) // make sure text[0] <= P < "end"
|
---|
1407 | {
|
---|
1408 | if (p >= end && end > text) {
|
---|
1409 | p = end - 1;
|
---|
1410 | indicate_error('1');
|
---|
1411 | }
|
---|
1412 | if (p < text) {
|
---|
1413 | p = text;
|
---|
1414 | indicate_error('2');
|
---|
1415 | }
|
---|
1416 | return p;
|
---|
1417 | }
|
---|
1418 |
|
---|
1419 | //----- Helper Utility Routines --------------------------------
|
---|
1420 |
|
---|
1421 | //----------------------------------------------------------------
|
---|
1422 | //----- Char Routines --------------------------------------------
|
---|
1423 | /* Chars that are part of a word-
|
---|
1424 | * 0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
|
---|
1425 | * Chars that are Not part of a word (stoppers)
|
---|
1426 | * !"#$%&'()*+,-./:;<=>?@[\]^`{|}~
|
---|
1427 | * Chars that are WhiteSpace
|
---|
1428 | * TAB NEWLINE VT FF RETURN SPACE
|
---|
1429 | * DO NOT COUNT NEWLINE AS WHITESPACE
|
---|
1430 | */
|
---|
1431 |
|
---|
1432 | static char *new_screen(int ro, int co)
|
---|
1433 | {
|
---|
1434 | int li;
|
---|
1435 |
|
---|
1436 | free(screen);
|
---|
1437 | screensize = ro * co + 8;
|
---|
1438 | screen = xmalloc(screensize);
|
---|
1439 | // initialize the new screen. assume this will be a empty file.
|
---|
1440 | screen_erase();
|
---|
1441 | // non-existent text[] lines start with a tilde (~).
|
---|
1442 | for (li = 1; li < ro - 1; li++) {
|
---|
1443 | screen[(li * co) + 0] = '~';
|
---|
1444 | }
|
---|
1445 | return screen;
|
---|
1446 | }
|
---|
1447 |
|
---|
1448 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
1449 | static int mycmp(const char * s1, const char * s2, int len)
|
---|
1450 | {
|
---|
1451 | int i;
|
---|
1452 |
|
---|
1453 | i = strncmp(s1, s2, len);
|
---|
1454 | if (ENABLE_FEATURE_VI_SETOPTS && ignorecase) {
|
---|
1455 | i = strncasecmp(s1, s2, len);
|
---|
1456 | }
|
---|
1457 | return i;
|
---|
1458 | }
|
---|
1459 |
|
---|
1460 | // search for pattern starting at p
|
---|
1461 | static char *char_search(char * p, const char * pat, int dir, int range)
|
---|
1462 | {
|
---|
1463 | #ifndef REGEX_SEARCH
|
---|
1464 | char *start, *stop;
|
---|
1465 | int len;
|
---|
1466 |
|
---|
1467 | len = strlen(pat);
|
---|
1468 | if (dir == FORWARD) {
|
---|
1469 | stop = end - 1; // assume range is p - end-1
|
---|
1470 | if (range == LIMITED)
|
---|
1471 | stop = next_line(p); // range is to next line
|
---|
1472 | for (start = p; start < stop; start++) {
|
---|
1473 | if (mycmp(start, pat, len) == 0) {
|
---|
1474 | return start;
|
---|
1475 | }
|
---|
1476 | }
|
---|
1477 | } else if (dir == BACK) {
|
---|
1478 | stop = text; // assume range is text - p
|
---|
1479 | if (range == LIMITED)
|
---|
1480 | stop = prev_line(p); // range is to prev line
|
---|
1481 | for (start = p - len; start >= stop; start--) {
|
---|
1482 | if (mycmp(start, pat, len) == 0) {
|
---|
1483 | return start;
|
---|
1484 | }
|
---|
1485 | }
|
---|
1486 | }
|
---|
1487 | // pattern not found
|
---|
1488 | return NULL;
|
---|
1489 | #else /* REGEX_SEARCH */
|
---|
1490 | char *q;
|
---|
1491 | struct re_pattern_buffer preg;
|
---|
1492 | int i;
|
---|
1493 | int size, range;
|
---|
1494 |
|
---|
1495 | re_syntax_options = RE_SYNTAX_POSIX_EXTENDED;
|
---|
1496 | preg.translate = 0;
|
---|
1497 | preg.fastmap = 0;
|
---|
1498 | preg.buffer = 0;
|
---|
1499 | preg.allocated = 0;
|
---|
1500 |
|
---|
1501 | // assume a LIMITED forward search
|
---|
1502 | q = next_line(p);
|
---|
1503 | q = end_line(q);
|
---|
1504 | q = end - 1;
|
---|
1505 | if (dir == BACK) {
|
---|
1506 | q = prev_line(p);
|
---|
1507 | q = text;
|
---|
1508 | }
|
---|
1509 | // count the number of chars to search over, forward or backward
|
---|
1510 | size = q - p;
|
---|
1511 | if (size < 0)
|
---|
1512 | size = p - q;
|
---|
1513 | // RANGE could be negative if we are searching backwards
|
---|
1514 | range = q - p;
|
---|
1515 |
|
---|
1516 | q = re_compile_pattern(pat, strlen(pat), &preg);
|
---|
1517 | if (q != 0) {
|
---|
1518 | // The pattern was not compiled
|
---|
1519 | psbs("bad search pattern: \"%s\": %s", pat, q);
|
---|
1520 | i = 0; // return p if pattern not compiled
|
---|
1521 | goto cs1;
|
---|
1522 | }
|
---|
1523 |
|
---|
1524 | q = p;
|
---|
1525 | if (range < 0) {
|
---|
1526 | q = p - size;
|
---|
1527 | if (q < text)
|
---|
1528 | q = text;
|
---|
1529 | }
|
---|
1530 | // search for the compiled pattern, preg, in p[]
|
---|
1531 | // range < 0- search backward
|
---|
1532 | // range > 0- search forward
|
---|
1533 | // 0 < start < size
|
---|
1534 | // re_search() < 0 not found or error
|
---|
1535 | // re_search() > 0 index of found pattern
|
---|
1536 | // struct pattern char int int int struct reg
|
---|
1537 | // re_search (*pattern_buffer, *string, size, start, range, *regs)
|
---|
1538 | i = re_search(&preg, q, size, 0, range, 0);
|
---|
1539 | if (i == -1) {
|
---|
1540 | p = 0;
|
---|
1541 | i = 0; // return NULL if pattern not found
|
---|
1542 | }
|
---|
1543 | cs1:
|
---|
1544 | if (dir == FORWARD) {
|
---|
1545 | p = p + i;
|
---|
1546 | } else {
|
---|
1547 | p = p - i;
|
---|
1548 | }
|
---|
1549 | return p;
|
---|
1550 | #endif /* REGEX_SEARCH */
|
---|
1551 | }
|
---|
1552 | #endif /* FEATURE_VI_SEARCH */
|
---|
1553 |
|
---|
1554 | static char *char_insert(char * p, char c) // insert the char c at 'p'
|
---|
1555 | {
|
---|
1556 | if (c == 22) { // Is this an ctrl-V?
|
---|
1557 | p = stupid_insert(p, '^'); // use ^ to indicate literal next
|
---|
1558 | p--; // backup onto ^
|
---|
1559 | refresh(FALSE); // show the ^
|
---|
1560 | c = get_one_char();
|
---|
1561 | *p = c;
|
---|
1562 | p++;
|
---|
1563 | file_modified++; // has the file been modified
|
---|
1564 | } else if (c == 27) { // Is this an ESC?
|
---|
1565 | cmd_mode = 0;
|
---|
1566 | cmdcnt = 0;
|
---|
1567 | end_cmd_q(); // stop adding to q
|
---|
1568 | last_status_cksum = 0; // force status update
|
---|
1569 | if ((p[-1] != '\n') && (dot > text)) {
|
---|
1570 | p--;
|
---|
1571 | }
|
---|
1572 | } else if (c == erase_char || c == 8 || c == 127) { // Is this a BS
|
---|
1573 | // 123456789
|
---|
1574 | if ((p[-1] != '\n') && (dot>text)) {
|
---|
1575 | p--;
|
---|
1576 | p = text_hole_delete(p, p); // shrink buffer 1 char
|
---|
1577 | }
|
---|
1578 | } else {
|
---|
1579 | // insert a char into text[]
|
---|
1580 | char *sp; // "save p"
|
---|
1581 |
|
---|
1582 | if (c == 13)
|
---|
1583 | c = '\n'; // translate \r to \n
|
---|
1584 | sp = p; // remember addr of insert
|
---|
1585 | p = stupid_insert(p, c); // insert the char
|
---|
1586 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
1587 | if (showmatch && strchr(")]}", *sp) != NULL) {
|
---|
1588 | showmatching(sp);
|
---|
1589 | }
|
---|
1590 | if (autoindent && c == '\n') { // auto indent the new line
|
---|
1591 | char *q;
|
---|
1592 |
|
---|
1593 | q = prev_line(p); // use prev line as templet
|
---|
1594 | for (; isblank(*q); q++) {
|
---|
1595 | p = stupid_insert(p, *q); // insert the char
|
---|
1596 | }
|
---|
1597 | }
|
---|
1598 | #endif
|
---|
1599 | }
|
---|
1600 | return p;
|
---|
1601 | }
|
---|
1602 |
|
---|
1603 | static char *stupid_insert(char * p, char c) // stupidly insert the char c at 'p'
|
---|
1604 | {
|
---|
1605 | p = text_hole_make(p, 1);
|
---|
1606 | if (p != 0) {
|
---|
1607 | *p = c;
|
---|
1608 | file_modified++; // has the file been modified
|
---|
1609 | p++;
|
---|
1610 | }
|
---|
1611 | return p;
|
---|
1612 | }
|
---|
1613 |
|
---|
1614 | static char find_range(char ** start, char ** stop, char c)
|
---|
1615 | {
|
---|
1616 | char *save_dot, *p, *q;
|
---|
1617 | int cnt;
|
---|
1618 |
|
---|
1619 | save_dot = dot;
|
---|
1620 | p = q = dot;
|
---|
1621 |
|
---|
1622 | if (strchr("cdy><", c)) {
|
---|
1623 | // these cmds operate on whole lines
|
---|
1624 | p = q = begin_line(p);
|
---|
1625 | for (cnt = 1; cnt < cmdcnt; cnt++) {
|
---|
1626 | q = next_line(q);
|
---|
1627 | }
|
---|
1628 | q = end_line(q);
|
---|
1629 | } else if (strchr("^%$0bBeEft", c)) {
|
---|
1630 | // These cmds operate on char positions
|
---|
1631 | do_cmd(c); // execute movement cmd
|
---|
1632 | q = dot;
|
---|
1633 | } else if (strchr("wW", c)) {
|
---|
1634 | do_cmd(c); // execute movement cmd
|
---|
1635 | // if we are at the next word's first char
|
---|
1636 | // step back one char
|
---|
1637 | // but check the possibilities when it is true
|
---|
1638 | if (dot > text && ((isspace(dot[-1]) && !isspace(dot[0]))
|
---|
1639 | || (ispunct(dot[-1]) && !ispunct(dot[0]))
|
---|
1640 | || (isalnum(dot[-1]) && !isalnum(dot[0]))))
|
---|
1641 | dot--; // move back off of next word
|
---|
1642 | if (dot > text && *dot == '\n')
|
---|
1643 | dot--; // stay off NL
|
---|
1644 | q = dot;
|
---|
1645 | } else if (strchr("H-k{", c)) {
|
---|
1646 | // these operate on multi-lines backwards
|
---|
1647 | q = end_line(dot); // find NL
|
---|
1648 | do_cmd(c); // execute movement cmd
|
---|
1649 | dot_begin();
|
---|
1650 | p = dot;
|
---|
1651 | } else if (strchr("L+j}\r\n", c)) {
|
---|
1652 | // these operate on multi-lines forwards
|
---|
1653 | p = begin_line(dot);
|
---|
1654 | do_cmd(c); // execute movement cmd
|
---|
1655 | dot_end(); // find NL
|
---|
1656 | q = dot;
|
---|
1657 | } else {
|
---|
1658 | c = 27; // error- return an ESC char
|
---|
1659 | //break;
|
---|
1660 | }
|
---|
1661 | *start = p;
|
---|
1662 | *stop = q;
|
---|
1663 | if (q < p) {
|
---|
1664 | *start = q;
|
---|
1665 | *stop = p;
|
---|
1666 | }
|
---|
1667 | dot = save_dot;
|
---|
1668 | return c;
|
---|
1669 | }
|
---|
1670 |
|
---|
1671 | static int st_test(char * p, int type, int dir, char * tested)
|
---|
1672 | {
|
---|
1673 | char c, c0, ci;
|
---|
1674 | int test, inc;
|
---|
1675 |
|
---|
1676 | inc = dir;
|
---|
1677 | c = c0 = p[0];
|
---|
1678 | ci = p[inc];
|
---|
1679 | test = 0;
|
---|
1680 |
|
---|
1681 | if (type == S_BEFORE_WS) {
|
---|
1682 | c = ci;
|
---|
1683 | test = ((!isspace(c)) || c == '\n');
|
---|
1684 | }
|
---|
1685 | if (type == S_TO_WS) {
|
---|
1686 | c = c0;
|
---|
1687 | test = ((!isspace(c)) || c == '\n');
|
---|
1688 | }
|
---|
1689 | if (type == S_OVER_WS) {
|
---|
1690 | c = c0;
|
---|
1691 | test = ((isspace(c)));
|
---|
1692 | }
|
---|
1693 | if (type == S_END_PUNCT) {
|
---|
1694 | c = ci;
|
---|
1695 | test = ((ispunct(c)));
|
---|
1696 | }
|
---|
1697 | if (type == S_END_ALNUM) {
|
---|
1698 | c = ci;
|
---|
1699 | test = ((isalnum(c)) || c == '_');
|
---|
1700 | }
|
---|
1701 | *tested = c;
|
---|
1702 | return test;
|
---|
1703 | }
|
---|
1704 |
|
---|
1705 | static char *skip_thing(char * p, int linecnt, int dir, int type)
|
---|
1706 | {
|
---|
1707 | char c;
|
---|
1708 |
|
---|
1709 | while (st_test(p, type, dir, &c)) {
|
---|
1710 | // make sure we limit search to correct number of lines
|
---|
1711 | if (c == '\n' && --linecnt < 1)
|
---|
1712 | break;
|
---|
1713 | if (dir >= 0 && p >= end - 1)
|
---|
1714 | break;
|
---|
1715 | if (dir < 0 && p <= text)
|
---|
1716 | break;
|
---|
1717 | p += dir; // move to next char
|
---|
1718 | }
|
---|
1719 | return p;
|
---|
1720 | }
|
---|
1721 |
|
---|
1722 | // find matching char of pair () [] {}
|
---|
1723 | static char *find_pair(char * p, char c)
|
---|
1724 | {
|
---|
1725 | char match, *q;
|
---|
1726 | int dir, level;
|
---|
1727 |
|
---|
1728 | match = ')';
|
---|
1729 | level = 1;
|
---|
1730 | dir = 1; // assume forward
|
---|
1731 | switch (c) {
|
---|
1732 | case '(':
|
---|
1733 | match = ')';
|
---|
1734 | break;
|
---|
1735 | case '[':
|
---|
1736 | match = ']';
|
---|
1737 | break;
|
---|
1738 | case '{':
|
---|
1739 | match = '}';
|
---|
1740 | break;
|
---|
1741 | case ')':
|
---|
1742 | match = '(';
|
---|
1743 | dir = -1;
|
---|
1744 | break;
|
---|
1745 | case ']':
|
---|
1746 | match = '[';
|
---|
1747 | dir = -1;
|
---|
1748 | break;
|
---|
1749 | case '}':
|
---|
1750 | match = '{';
|
---|
1751 | dir = -1;
|
---|
1752 | break;
|
---|
1753 | }
|
---|
1754 | for (q = p + dir; text <= q && q < end; q += dir) {
|
---|
1755 | // look for match, count levels of pairs (( ))
|
---|
1756 | if (*q == c)
|
---|
1757 | level++; // increase pair levels
|
---|
1758 | if (*q == match)
|
---|
1759 | level--; // reduce pair level
|
---|
1760 | if (level == 0)
|
---|
1761 | break; // found matching pair
|
---|
1762 | }
|
---|
1763 | if (level != 0)
|
---|
1764 | q = NULL; // indicate no match
|
---|
1765 | return q;
|
---|
1766 | }
|
---|
1767 |
|
---|
1768 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
1769 | // show the matching char of a pair, () [] {}
|
---|
1770 | static void showmatching(char * p)
|
---|
1771 | {
|
---|
1772 | char *q, *save_dot;
|
---|
1773 |
|
---|
1774 | // we found half of a pair
|
---|
1775 | q = find_pair(p, *p); // get loc of matching char
|
---|
1776 | if (q == NULL) {
|
---|
1777 | indicate_error('3'); // no matching char
|
---|
1778 | } else {
|
---|
1779 | // "q" now points to matching pair
|
---|
1780 | save_dot = dot; // remember where we are
|
---|
1781 | dot = q; // go to new loc
|
---|
1782 | refresh(FALSE); // let the user see it
|
---|
1783 | mysleep(40); // give user some time
|
---|
1784 | dot = save_dot; // go back to old loc
|
---|
1785 | refresh(FALSE);
|
---|
1786 | }
|
---|
1787 | }
|
---|
1788 | #endif /* FEATURE_VI_SETOPTS */
|
---|
1789 |
|
---|
1790 | // open a hole in text[]
|
---|
1791 | static char *text_hole_make(char * p, int size) // at "p", make a 'size' byte hole
|
---|
1792 | {
|
---|
1793 | char *src, *dest;
|
---|
1794 | int cnt;
|
---|
1795 |
|
---|
1796 | if (size <= 0)
|
---|
1797 | goto thm0;
|
---|
1798 | src = p;
|
---|
1799 | dest = p + size;
|
---|
1800 | cnt = end - src; // the rest of buffer
|
---|
1801 | if ( ((end + size) >= (text + text_size)) // TODO: realloc here
|
---|
1802 | || memmove(dest, src, cnt) != dest) {
|
---|
1803 | psbs("can't create room for new characters");
|
---|
1804 | p = NULL;
|
---|
1805 | goto thm0;
|
---|
1806 | }
|
---|
1807 | memset(p, ' ', size); // clear new hole
|
---|
1808 | end += size; // adjust the new END
|
---|
1809 | file_modified++; // has the file been modified
|
---|
1810 | thm0:
|
---|
1811 | return p;
|
---|
1812 | }
|
---|
1813 |
|
---|
1814 | // close a hole in text[]
|
---|
1815 | static char *text_hole_delete(char * p, char * q) // delete "p" thru "q", inclusive
|
---|
1816 | {
|
---|
1817 | char *src, *dest;
|
---|
1818 | int cnt, hole_size;
|
---|
1819 |
|
---|
1820 | // move forwards, from beginning
|
---|
1821 | // assume p <= q
|
---|
1822 | src = q + 1;
|
---|
1823 | dest = p;
|
---|
1824 | if (q < p) { // they are backward- swap them
|
---|
1825 | src = p + 1;
|
---|
1826 | dest = q;
|
---|
1827 | }
|
---|
1828 | hole_size = q - p + 1;
|
---|
1829 | cnt = end - src;
|
---|
1830 | if (src < text || src > end)
|
---|
1831 | goto thd0;
|
---|
1832 | if (dest < text || dest >= end)
|
---|
1833 | goto thd0;
|
---|
1834 | if (src >= end)
|
---|
1835 | goto thd_atend; // just delete the end of the buffer
|
---|
1836 | if (memmove(dest, src, cnt) != dest) {
|
---|
1837 | psbs("can't delete the character");
|
---|
1838 | }
|
---|
1839 | thd_atend:
|
---|
1840 | end = end - hole_size; // adjust the new END
|
---|
1841 | if (dest >= end)
|
---|
1842 | dest = end - 1; // make sure dest in below end-1
|
---|
1843 | if (end <= text)
|
---|
1844 | dest = end = text; // keep pointers valid
|
---|
1845 | file_modified++; // has the file been modified
|
---|
1846 | thd0:
|
---|
1847 | return dest;
|
---|
1848 | }
|
---|
1849 |
|
---|
1850 | // copy text into register, then delete text.
|
---|
1851 | // if dist <= 0, do not include, or go past, a NewLine
|
---|
1852 | //
|
---|
1853 | static char *yank_delete(char * start, char * stop, int dist, int yf)
|
---|
1854 | {
|
---|
1855 | char *p;
|
---|
1856 |
|
---|
1857 | // make sure start <= stop
|
---|
1858 | if (start > stop) {
|
---|
1859 | // they are backwards, reverse them
|
---|
1860 | p = start;
|
---|
1861 | start = stop;
|
---|
1862 | stop = p;
|
---|
1863 | }
|
---|
1864 | if (dist <= 0) {
|
---|
1865 | // we cannot cross NL boundaries
|
---|
1866 | p = start;
|
---|
1867 | if (*p == '\n')
|
---|
1868 | return p;
|
---|
1869 | // dont go past a NewLine
|
---|
1870 | for (; p + 1 <= stop; p++) {
|
---|
1871 | if (p[1] == '\n') {
|
---|
1872 | stop = p; // "stop" just before NewLine
|
---|
1873 | break;
|
---|
1874 | }
|
---|
1875 | }
|
---|
1876 | }
|
---|
1877 | p = start;
|
---|
1878 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
1879 | text_yank(start, stop, YDreg);
|
---|
1880 | #endif
|
---|
1881 | if (yf == YANKDEL) {
|
---|
1882 | p = text_hole_delete(start, stop);
|
---|
1883 | } // delete lines
|
---|
1884 | return p;
|
---|
1885 | }
|
---|
1886 |
|
---|
1887 | static void show_help(void)
|
---|
1888 | {
|
---|
1889 | puts("These features are available:"
|
---|
1890 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
1891 | "\n\tPattern searches with / and ?"
|
---|
1892 | #endif
|
---|
1893 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
1894 | "\n\tLast command repeat with \'.\'"
|
---|
1895 | #endif
|
---|
1896 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
1897 | "\n\tLine marking with 'x"
|
---|
1898 | "\n\tNamed buffers with \"x"
|
---|
1899 | #endif
|
---|
1900 | #if ENABLE_FEATURE_VI_READONLY
|
---|
1901 | "\n\tReadonly if vi is called as \"view\""
|
---|
1902 | "\n\tReadonly with -R command line arg"
|
---|
1903 | #endif
|
---|
1904 | #if ENABLE_FEATURE_VI_SET
|
---|
1905 | "\n\tSome colon mode commands with \':\'"
|
---|
1906 | #endif
|
---|
1907 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
1908 | "\n\tSettable options with \":set\""
|
---|
1909 | #endif
|
---|
1910 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
1911 | "\n\tSignal catching- ^C"
|
---|
1912 | "\n\tJob suspend and resume with ^Z"
|
---|
1913 | #endif
|
---|
1914 | #if ENABLE_FEATURE_VI_WIN_RESIZE
|
---|
1915 | "\n\tAdapt to window re-sizes"
|
---|
1916 | #endif
|
---|
1917 | );
|
---|
1918 | }
|
---|
1919 |
|
---|
1920 | static inline void print_literal(char * buf, const char * s) // copy s to buf, convert unprintable
|
---|
1921 | {
|
---|
1922 | unsigned char c;
|
---|
1923 | char b[2];
|
---|
1924 |
|
---|
1925 | b[1] = '\0';
|
---|
1926 | buf[0] = '\0';
|
---|
1927 | if (!s[0])
|
---|
1928 | s = "(NULL)";
|
---|
1929 | for (; *s; s++) {
|
---|
1930 | int c_is_no_print;
|
---|
1931 |
|
---|
1932 | c = *s;
|
---|
1933 | c_is_no_print = (c & 0x80) && !Isprint(c);
|
---|
1934 | if (c_is_no_print) {
|
---|
1935 | strcat(buf, SOn);
|
---|
1936 | c = '.';
|
---|
1937 | }
|
---|
1938 | if (c < ' ' || c == 127) {
|
---|
1939 | strcat(buf, "^");
|
---|
1940 | if (c == 127)
|
---|
1941 | c = '?';
|
---|
1942 | else
|
---|
1943 | c += '@';
|
---|
1944 | }
|
---|
1945 | b[0] = c;
|
---|
1946 | strcat(buf, b);
|
---|
1947 | if (c_is_no_print)
|
---|
1948 | strcat(buf, SOs);
|
---|
1949 | if (*s == '\n')
|
---|
1950 | strcat(buf, "$");
|
---|
1951 | }
|
---|
1952 | }
|
---|
1953 |
|
---|
1954 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
1955 | static void start_new_cmd_q(char c)
|
---|
1956 | {
|
---|
1957 | // release old cmd
|
---|
1958 | free(last_modifying_cmd);
|
---|
1959 | // get buffer for new cmd
|
---|
1960 | last_modifying_cmd = xzalloc(MAX_LINELEN);
|
---|
1961 | // if there is a current cmd count put it in the buffer first
|
---|
1962 | if (cmdcnt > 0)
|
---|
1963 | sprintf(last_modifying_cmd, "%d%c", cmdcnt, c);
|
---|
1964 | else // just save char c onto queue
|
---|
1965 | last_modifying_cmd[0] = c;
|
---|
1966 | adding2q = 1;
|
---|
1967 | }
|
---|
1968 |
|
---|
1969 | static void end_cmd_q(void)
|
---|
1970 | {
|
---|
1971 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
1972 | YDreg = 26; // go back to default Yank/Delete reg
|
---|
1973 | #endif
|
---|
1974 | adding2q = 0;
|
---|
1975 | }
|
---|
1976 | #endif /* FEATURE_VI_DOT_CMD */
|
---|
1977 |
|
---|
1978 | #if ENABLE_FEATURE_VI_YANKMARK \
|
---|
1979 | || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) \
|
---|
1980 | || ENABLE_FEATURE_VI_CRASHME
|
---|
1981 | static char *string_insert(char * p, char * s) // insert the string at 'p'
|
---|
1982 | {
|
---|
1983 | int cnt, i;
|
---|
1984 |
|
---|
1985 | i = strlen(s);
|
---|
1986 | if (text_hole_make(p, i)) {
|
---|
1987 | strncpy(p, s, i);
|
---|
1988 | for (cnt = 0; *s != '\0'; s++) {
|
---|
1989 | if (*s == '\n')
|
---|
1990 | cnt++;
|
---|
1991 | }
|
---|
1992 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
1993 | psb("Put %d lines (%d chars) from [%c]", cnt, i, what_reg());
|
---|
1994 | #endif
|
---|
1995 | }
|
---|
1996 | return p;
|
---|
1997 | }
|
---|
1998 | #endif
|
---|
1999 |
|
---|
2000 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
2001 | static char *text_yank(char * p, char * q, int dest) // copy text into a register
|
---|
2002 | {
|
---|
2003 | char *t;
|
---|
2004 | int cnt;
|
---|
2005 |
|
---|
2006 | if (q < p) { // they are backwards- reverse them
|
---|
2007 | t = q;
|
---|
2008 | q = p;
|
---|
2009 | p = t;
|
---|
2010 | }
|
---|
2011 | cnt = q - p + 1;
|
---|
2012 | t = reg[dest];
|
---|
2013 | free(t); // if already a yank register, free it
|
---|
2014 | t = xmalloc(cnt + 1); // get a new register
|
---|
2015 | memset(t, '\0', cnt + 1); // clear new text[]
|
---|
2016 | strncpy(t, p, cnt); // copy text[] into bufer
|
---|
2017 | reg[dest] = t;
|
---|
2018 | return p;
|
---|
2019 | }
|
---|
2020 |
|
---|
2021 | static char what_reg(void)
|
---|
2022 | {
|
---|
2023 | char c;
|
---|
2024 |
|
---|
2025 | c = 'D'; // default to D-reg
|
---|
2026 | if (0 <= YDreg && YDreg <= 25)
|
---|
2027 | c = 'a' + (char) YDreg;
|
---|
2028 | if (YDreg == 26)
|
---|
2029 | c = 'D';
|
---|
2030 | if (YDreg == 27)
|
---|
2031 | c = 'U';
|
---|
2032 | return c;
|
---|
2033 | }
|
---|
2034 |
|
---|
2035 | static void check_context(char cmd)
|
---|
2036 | {
|
---|
2037 | // A context is defined to be "modifying text"
|
---|
2038 | // Any modifying command establishes a new context.
|
---|
2039 |
|
---|
2040 | if (dot < context_start || dot > context_end) {
|
---|
2041 | if (strchr(modifying_cmds, cmd) != NULL) {
|
---|
2042 | // we are trying to modify text[]- make this the current context
|
---|
2043 | mark[27] = mark[26]; // move cur to prev
|
---|
2044 | mark[26] = dot; // move local to cur
|
---|
2045 | context_start = prev_line(prev_line(dot));
|
---|
2046 | context_end = next_line(next_line(dot));
|
---|
2047 | //loiter= start_loiter= now;
|
---|
2048 | }
|
---|
2049 | }
|
---|
2050 | }
|
---|
2051 |
|
---|
2052 | static inline char *swap_context(char * p) // goto new context for '' command make this the current context
|
---|
2053 | {
|
---|
2054 | char *tmp;
|
---|
2055 |
|
---|
2056 | // the current context is in mark[26]
|
---|
2057 | // the previous context is in mark[27]
|
---|
2058 | // only swap context if other context is valid
|
---|
2059 | if (text <= mark[27] && mark[27] <= end - 1) {
|
---|
2060 | tmp = mark[27];
|
---|
2061 | mark[27] = mark[26];
|
---|
2062 | mark[26] = tmp;
|
---|
2063 | p = mark[26]; // where we are going- previous context
|
---|
2064 | context_start = prev_line(prev_line(prev_line(p)));
|
---|
2065 | context_end = next_line(next_line(next_line(p)));
|
---|
2066 | }
|
---|
2067 | return p;
|
---|
2068 | }
|
---|
2069 | #endif /* FEATURE_VI_YANKMARK */
|
---|
2070 |
|
---|
2071 | //----- Set terminal attributes --------------------------------
|
---|
2072 | static void rawmode(void)
|
---|
2073 | {
|
---|
2074 | tcgetattr(0, &term_orig);
|
---|
2075 | term_vi = term_orig;
|
---|
2076 | term_vi.c_lflag &= (~ICANON & ~ECHO); // leave ISIG ON- allow intr's
|
---|
2077 | term_vi.c_iflag &= (~IXON & ~ICRNL);
|
---|
2078 | term_vi.c_oflag &= (~ONLCR);
|
---|
2079 | term_vi.c_cc[VMIN] = 1;
|
---|
2080 | term_vi.c_cc[VTIME] = 0;
|
---|
2081 | erase_char = term_vi.c_cc[VERASE];
|
---|
2082 | tcsetattr(0, TCSANOW, &term_vi);
|
---|
2083 | }
|
---|
2084 |
|
---|
2085 | static void cookmode(void)
|
---|
2086 | {
|
---|
2087 | fflush(stdout);
|
---|
2088 | tcsetattr(0, TCSANOW, &term_orig);
|
---|
2089 | }
|
---|
2090 |
|
---|
2091 | //----- Come here when we get a window resize signal ---------
|
---|
2092 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
2093 | static void winch_sig(int sig ATTRIBUTE_UNUSED)
|
---|
2094 | {
|
---|
2095 | signal(SIGWINCH, winch_sig);
|
---|
2096 | if (ENABLE_FEATURE_VI_WIN_RESIZE)
|
---|
2097 | get_terminal_width_height(0, &columns, &rows);
|
---|
2098 | new_screen(rows, columns); // get memory for virtual screen
|
---|
2099 | redraw(TRUE); // re-draw the screen
|
---|
2100 | }
|
---|
2101 |
|
---|
2102 | //----- Come here when we get a continue signal -------------------
|
---|
2103 | static void cont_sig(int sig ATTRIBUTE_UNUSED)
|
---|
2104 | {
|
---|
2105 | rawmode(); // terminal to "raw"
|
---|
2106 | last_status_cksum = 0; // force status update
|
---|
2107 | redraw(TRUE); // re-draw the screen
|
---|
2108 |
|
---|
2109 | signal(SIGTSTP, suspend_sig);
|
---|
2110 | signal(SIGCONT, SIG_DFL);
|
---|
2111 | kill(my_pid, SIGCONT);
|
---|
2112 | }
|
---|
2113 |
|
---|
2114 | //----- Come here when we get a Suspend signal -------------------
|
---|
2115 | static void suspend_sig(int sig ATTRIBUTE_UNUSED)
|
---|
2116 | {
|
---|
2117 | place_cursor(rows - 1, 0, FALSE); // go to bottom of screen
|
---|
2118 | clear_to_eol(); // Erase to end of line
|
---|
2119 | cookmode(); // terminal to "cooked"
|
---|
2120 |
|
---|
2121 | signal(SIGCONT, cont_sig);
|
---|
2122 | signal(SIGTSTP, SIG_DFL);
|
---|
2123 | kill(my_pid, SIGTSTP);
|
---|
2124 | }
|
---|
2125 |
|
---|
2126 | //----- Come here when we get a signal ---------------------------
|
---|
2127 | static void catch_sig(int sig)
|
---|
2128 | {
|
---|
2129 | signal(SIGINT, catch_sig);
|
---|
2130 | if (sig)
|
---|
2131 | longjmp(restart, sig);
|
---|
2132 | }
|
---|
2133 | #endif /* FEATURE_VI_USE_SIGNALS */
|
---|
2134 |
|
---|
2135 | static int mysleep(int hund) // sleep for 'h' 1/100 seconds
|
---|
2136 | {
|
---|
2137 | fd_set rfds;
|
---|
2138 | struct timeval tv;
|
---|
2139 |
|
---|
2140 | // Don't hang- Wait 5/100 seconds- 1 Sec= 1000000
|
---|
2141 | fflush(stdout);
|
---|
2142 | FD_ZERO(&rfds);
|
---|
2143 | FD_SET(0, &rfds);
|
---|
2144 | tv.tv_sec = 0;
|
---|
2145 | tv.tv_usec = hund * 10000;
|
---|
2146 | select(1, &rfds, NULL, NULL, &tv);
|
---|
2147 | return FD_ISSET(0, &rfds);
|
---|
2148 | }
|
---|
2149 |
|
---|
2150 | #define readbuffer bb_common_bufsiz1
|
---|
2151 |
|
---|
2152 | static int readed_for_parse;
|
---|
2153 |
|
---|
2154 | //----- IO Routines --------------------------------------------
|
---|
2155 | static char readit(void) // read (maybe cursor) key from stdin
|
---|
2156 | {
|
---|
2157 | char c;
|
---|
2158 | int n;
|
---|
2159 | struct esc_cmds {
|
---|
2160 | const char *seq;
|
---|
2161 | char val;
|
---|
2162 | };
|
---|
2163 |
|
---|
2164 | static const struct esc_cmds esccmds[] = {
|
---|
2165 | {"OA", VI_K_UP}, // cursor key Up
|
---|
2166 | {"OB", VI_K_DOWN}, // cursor key Down
|
---|
2167 | {"OC", VI_K_RIGHT}, // Cursor Key Right
|
---|
2168 | {"OD", VI_K_LEFT}, // cursor key Left
|
---|
2169 | {"OH", VI_K_HOME}, // Cursor Key Home
|
---|
2170 | {"OF", VI_K_END}, // Cursor Key End
|
---|
2171 | {"[A", VI_K_UP}, // cursor key Up
|
---|
2172 | {"[B", VI_K_DOWN}, // cursor key Down
|
---|
2173 | {"[C", VI_K_RIGHT}, // Cursor Key Right
|
---|
2174 | {"[D", VI_K_LEFT}, // cursor key Left
|
---|
2175 | {"[H", VI_K_HOME}, // Cursor Key Home
|
---|
2176 | {"[F", VI_K_END}, // Cursor Key End
|
---|
2177 | {"[1~", VI_K_HOME}, // Cursor Key Home
|
---|
2178 | {"[2~", VI_K_INSERT}, // Cursor Key Insert
|
---|
2179 | {"[4~", VI_K_END}, // Cursor Key End
|
---|
2180 | {"[5~", VI_K_PAGEUP}, // Cursor Key Page Up
|
---|
2181 | {"[6~", VI_K_PAGEDOWN},// Cursor Key Page Down
|
---|
2182 | {"OP", VI_K_FUN1}, // Function Key F1
|
---|
2183 | {"OQ", VI_K_FUN2}, // Function Key F2
|
---|
2184 | {"OR", VI_K_FUN3}, // Function Key F3
|
---|
2185 | {"OS", VI_K_FUN4}, // Function Key F4
|
---|
2186 | {"[15~", VI_K_FUN5}, // Function Key F5
|
---|
2187 | {"[17~", VI_K_FUN6}, // Function Key F6
|
---|
2188 | {"[18~", VI_K_FUN7}, // Function Key F7
|
---|
2189 | {"[19~", VI_K_FUN8}, // Function Key F8
|
---|
2190 | {"[20~", VI_K_FUN9}, // Function Key F9
|
---|
2191 | {"[21~", VI_K_FUN10}, // Function Key F10
|
---|
2192 | {"[23~", VI_K_FUN11}, // Function Key F11
|
---|
2193 | {"[24~", VI_K_FUN12}, // Function Key F12
|
---|
2194 | {"[11~", VI_K_FUN1}, // Function Key F1
|
---|
2195 | {"[12~", VI_K_FUN2}, // Function Key F2
|
---|
2196 | {"[13~", VI_K_FUN3}, // Function Key F3
|
---|
2197 | {"[14~", VI_K_FUN4}, // Function Key F4
|
---|
2198 | };
|
---|
2199 | enum { ESCCMDS_COUNT = ARRAY_SIZE(esccmds) };
|
---|
2200 |
|
---|
2201 | alarm(0); // turn alarm OFF while we wait for input
|
---|
2202 | fflush(stdout);
|
---|
2203 | n = readed_for_parse;
|
---|
2204 | // get input from User- are there already input chars in Q?
|
---|
2205 | if (n <= 0) {
|
---|
2206 | ri0:
|
---|
2207 | // the Q is empty, wait for a typed char
|
---|
2208 | n = read(0, readbuffer, MAX_LINELEN - 1);
|
---|
2209 | if (n < 0) {
|
---|
2210 | if (errno == EINTR)
|
---|
2211 | goto ri0; // interrupted sys call
|
---|
2212 | if (errno == EBADF || errno == EFAULT || errno == EINVAL
|
---|
2213 | || errno == EIO)
|
---|
2214 | editing = 0;
|
---|
2215 | errno = 0;
|
---|
2216 | }
|
---|
2217 | if (n <= 0)
|
---|
2218 | return 0; // error
|
---|
2219 | if (readbuffer[0] == 27) {
|
---|
2220 | fd_set rfds;
|
---|
2221 | struct timeval tv;
|
---|
2222 |
|
---|
2223 | // This is an ESC char. Is this Esc sequence?
|
---|
2224 | // Could be bare Esc key. See if there are any
|
---|
2225 | // more chars to read after the ESC. This would
|
---|
2226 | // be a Function or Cursor Key sequence.
|
---|
2227 | FD_ZERO(&rfds);
|
---|
2228 | FD_SET(0, &rfds);
|
---|
2229 | tv.tv_sec = 0;
|
---|
2230 | tv.tv_usec = 50000; // Wait 5/100 seconds- 1 Sec=1000000
|
---|
2231 |
|
---|
2232 | // keep reading while there are input chars and room in buffer
|
---|
2233 | while (select(1, &rfds, NULL, NULL, &tv) > 0 && n <= (MAX_LINELEN - 5)) {
|
---|
2234 | // read the rest of the ESC string
|
---|
2235 | int r = read(0, (void *) (readbuffer + n), MAX_LINELEN - n);
|
---|
2236 | if (r > 0) {
|
---|
2237 | n += r;
|
---|
2238 | }
|
---|
2239 | }
|
---|
2240 | }
|
---|
2241 | readed_for_parse = n;
|
---|
2242 | }
|
---|
2243 | c = readbuffer[0];
|
---|
2244 | if (c == 27 && n > 1) {
|
---|
2245 | // Maybe cursor or function key?
|
---|
2246 | const struct esc_cmds *eindex;
|
---|
2247 |
|
---|
2248 | for (eindex = esccmds; eindex < &esccmds[ESCCMDS_COUNT]; eindex++) {
|
---|
2249 | int cnt = strlen(eindex->seq);
|
---|
2250 |
|
---|
2251 | if (n <= cnt)
|
---|
2252 | continue;
|
---|
2253 | if (strncmp(eindex->seq, readbuffer + 1, cnt))
|
---|
2254 | continue;
|
---|
2255 | // is a Cursor key- put derived value back into Q
|
---|
2256 | c = eindex->val;
|
---|
2257 | // for squeeze out the ESC sequence
|
---|
2258 | n = cnt + 1;
|
---|
2259 | break;
|
---|
2260 | }
|
---|
2261 | if (eindex == &esccmds[ESCCMDS_COUNT]) {
|
---|
2262 | /* defined ESC sequence not found, set only one ESC */
|
---|
2263 | n = 1;
|
---|
2264 | }
|
---|
2265 | } else {
|
---|
2266 | n = 1;
|
---|
2267 | }
|
---|
2268 | // remove key sequence from Q
|
---|
2269 | readed_for_parse -= n;
|
---|
2270 | memmove(readbuffer, readbuffer + n, MAX_LINELEN - n);
|
---|
2271 | alarm(3); // we are done waiting for input, turn alarm ON
|
---|
2272 | return c;
|
---|
2273 | }
|
---|
2274 |
|
---|
2275 | //----- IO Routines --------------------------------------------
|
---|
2276 | static char get_one_char(void)
|
---|
2277 | {
|
---|
2278 | static char c;
|
---|
2279 |
|
---|
2280 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
2281 | // ! adding2q && ioq == 0 read()
|
---|
2282 | // ! adding2q && ioq != 0 *ioq
|
---|
2283 | // adding2q *last_modifying_cmd= read()
|
---|
2284 | if (!adding2q) {
|
---|
2285 | // we are not adding to the q.
|
---|
2286 | // but, we may be reading from a q
|
---|
2287 | if (ioq == 0) {
|
---|
2288 | // there is no current q, read from STDIN
|
---|
2289 | c = readit(); // get the users input
|
---|
2290 | } else {
|
---|
2291 | // there is a queue to get chars from first
|
---|
2292 | c = *ioq++;
|
---|
2293 | if (c == '\0') {
|
---|
2294 | // the end of the q, read from STDIN
|
---|
2295 | free(ioq_start);
|
---|
2296 | ioq_start = ioq = 0;
|
---|
2297 | c = readit(); // get the users input
|
---|
2298 | }
|
---|
2299 | }
|
---|
2300 | } else {
|
---|
2301 | // adding STDIN chars to q
|
---|
2302 | c = readit(); // get the users input
|
---|
2303 | if (last_modifying_cmd != 0) {
|
---|
2304 | int len = strlen(last_modifying_cmd);
|
---|
2305 | if (len >= MAX_LINELEN - 1) {
|
---|
2306 | psbs("last_modifying_cmd overrun");
|
---|
2307 | } else {
|
---|
2308 | // add new char to q
|
---|
2309 | last_modifying_cmd[len] = c;
|
---|
2310 | }
|
---|
2311 | }
|
---|
2312 | }
|
---|
2313 | #else
|
---|
2314 | c = readit(); // get the users input
|
---|
2315 | #endif /* FEATURE_VI_DOT_CMD */
|
---|
2316 | return c; // return the char, where ever it came from
|
---|
2317 | }
|
---|
2318 |
|
---|
2319 | static char *get_input_line(const char * prompt) // get input line- use "status line"
|
---|
2320 | {
|
---|
2321 | static char *obufp;
|
---|
2322 |
|
---|
2323 | char buf[MAX_LINELEN];
|
---|
2324 | char c;
|
---|
2325 | int i;
|
---|
2326 |
|
---|
2327 | strcpy(buf, prompt);
|
---|
2328 | last_status_cksum = 0; // force status update
|
---|
2329 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen
|
---|
2330 | clear_to_eol(); // clear the line
|
---|
2331 | write1(prompt); // write out the :, /, or ? prompt
|
---|
2332 |
|
---|
2333 | i = strlen(buf);
|
---|
2334 | while (i < MAX_LINELEN) {
|
---|
2335 | c = get_one_char(); // read user input
|
---|
2336 | if (c == '\n' || c == '\r' || c == 27)
|
---|
2337 | break; // is this end of input
|
---|
2338 | if (c == erase_char || c == 8 || c == 127) {
|
---|
2339 | // user wants to erase prev char
|
---|
2340 | i--; // backup to prev char
|
---|
2341 | buf[i] = '\0'; // erase the char
|
---|
2342 | buf[i + 1] = '\0'; // null terminate buffer
|
---|
2343 | write1("\b \b"); // erase char on screen
|
---|
2344 | if (i <= 0) { // user backs up before b-o-l, exit
|
---|
2345 | break;
|
---|
2346 | }
|
---|
2347 | } else {
|
---|
2348 | buf[i] = c; // save char in buffer
|
---|
2349 | buf[i + 1] = '\0'; // make sure buffer is null terminated
|
---|
2350 | putchar(c); // echo the char back to user
|
---|
2351 | i++;
|
---|
2352 | }
|
---|
2353 | }
|
---|
2354 | refresh(FALSE);
|
---|
2355 | free(obufp);
|
---|
2356 | obufp = xstrdup(buf);
|
---|
2357 | return obufp;
|
---|
2358 | }
|
---|
2359 |
|
---|
2360 | static int file_size(const char *fn) // what is the byte size of "fn"
|
---|
2361 | {
|
---|
2362 | struct stat st_buf;
|
---|
2363 | int cnt;
|
---|
2364 |
|
---|
2365 | cnt = -1;
|
---|
2366 | if (fn && fn[0] && stat(fn, &st_buf) == 0) // see if file exists
|
---|
2367 | cnt = (int) st_buf.st_size;
|
---|
2368 | return cnt;
|
---|
2369 | }
|
---|
2370 |
|
---|
2371 | static int file_insert(const char * fn, char *p
|
---|
2372 | USE_FEATURE_VI_READONLY(, int update_ro_status))
|
---|
2373 | {
|
---|
2374 | int cnt = -1;
|
---|
2375 | int fd, size;
|
---|
2376 | struct stat statbuf;
|
---|
2377 |
|
---|
2378 | /* Validate file */
|
---|
2379 | if (stat(fn, &statbuf) < 0) {
|
---|
2380 | psbs("\"%s\" %s", fn, strerror(errno));
|
---|
2381 | goto fi0;
|
---|
2382 | }
|
---|
2383 | if ((statbuf.st_mode & S_IFREG) == 0) {
|
---|
2384 | // This is not a regular file
|
---|
2385 | psbs("\"%s\" Not a regular file", fn);
|
---|
2386 | goto fi0;
|
---|
2387 | }
|
---|
2388 | /* // this check is done by open()
|
---|
2389 | if ((statbuf.st_mode & (S_IRUSR | S_IRGRP | S_IROTH)) == 0) {
|
---|
2390 | // dont have any read permissions
|
---|
2391 | psbs("\"%s\" Not readable", fn);
|
---|
2392 | goto fi0;
|
---|
2393 | }
|
---|
2394 | */
|
---|
2395 | if (p < text || p > end) {
|
---|
2396 | psbs("Trying to insert file outside of memory");
|
---|
2397 | goto fi0;
|
---|
2398 | }
|
---|
2399 |
|
---|
2400 | // read file to buffer
|
---|
2401 | fd = open(fn, O_RDONLY);
|
---|
2402 | if (fd < 0) {
|
---|
2403 | psbs("\"%s\" %s", fn, strerror(errno));
|
---|
2404 | goto fi0;
|
---|
2405 | }
|
---|
2406 | size = statbuf.st_size;
|
---|
2407 | p = text_hole_make(p, size);
|
---|
2408 | if (p == NULL)
|
---|
2409 | goto fi0;
|
---|
2410 | cnt = read(fd, p, size);
|
---|
2411 | if (cnt < 0) {
|
---|
2412 | psbs("\"%s\" %s", fn, strerror(errno));
|
---|
2413 | p = text_hole_delete(p, p + size - 1); // un-do buffer insert
|
---|
2414 | } else if (cnt < size) {
|
---|
2415 | // There was a partial read, shrink unused space text[]
|
---|
2416 | p = text_hole_delete(p + cnt, p + (size - cnt) - 1); // un-do buffer insert
|
---|
2417 | psbs("cannot read all of file \"%s\"", fn);
|
---|
2418 | }
|
---|
2419 | if (cnt >= size)
|
---|
2420 | file_modified++;
|
---|
2421 | close(fd);
|
---|
2422 | fi0:
|
---|
2423 | #if ENABLE_FEATURE_VI_READONLY
|
---|
2424 | if (update_ro_status
|
---|
2425 | && ((access(fn, W_OK) < 0) ||
|
---|
2426 | /* root will always have access()
|
---|
2427 | * so we check fileperms too */
|
---|
2428 | !(statbuf.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH))
|
---|
2429 | )
|
---|
2430 | ) {
|
---|
2431 | SET_READONLY_FILE(readonly_mode);
|
---|
2432 | }
|
---|
2433 | #endif
|
---|
2434 | return cnt;
|
---|
2435 | }
|
---|
2436 |
|
---|
2437 |
|
---|
2438 | static int file_write(char * fn, char * first, char * last)
|
---|
2439 | {
|
---|
2440 | int fd, cnt, charcnt;
|
---|
2441 |
|
---|
2442 | if (fn == 0) {
|
---|
2443 | psbs("No current filename");
|
---|
2444 | return -2;
|
---|
2445 | }
|
---|
2446 | charcnt = 0;
|
---|
2447 | // FIXIT- use the correct umask()
|
---|
2448 | fd = open(fn, (O_WRONLY | O_CREAT | O_TRUNC), 0664);
|
---|
2449 | if (fd < 0)
|
---|
2450 | return -1;
|
---|
2451 | cnt = last - first + 1;
|
---|
2452 | charcnt = write(fd, first, cnt);
|
---|
2453 | if (charcnt == cnt) {
|
---|
2454 | // good write
|
---|
2455 | //file_modified = FALSE; // the file has not been modified
|
---|
2456 | } else {
|
---|
2457 | charcnt = 0;
|
---|
2458 | }
|
---|
2459 | close(fd);
|
---|
2460 | return charcnt;
|
---|
2461 | }
|
---|
2462 |
|
---|
2463 | //----- Terminal Drawing ---------------------------------------
|
---|
2464 | // The terminal is made up of 'rows' line of 'columns' columns.
|
---|
2465 | // classically this would be 24 x 80.
|
---|
2466 | // screen coordinates
|
---|
2467 | // 0,0 ... 0,79
|
---|
2468 | // 1,0 ... 1,79
|
---|
2469 | // . ... .
|
---|
2470 | // . ... .
|
---|
2471 | // 22,0 ... 22,79
|
---|
2472 | // 23,0 ... 23,79 status line
|
---|
2473 | //
|
---|
2474 |
|
---|
2475 | //----- Move the cursor to row x col (count from 0, not 1) -------
|
---|
2476 | static void place_cursor(int row, int col, int opti)
|
---|
2477 | {
|
---|
2478 | char cm1[MAX_LINELEN];
|
---|
2479 | char *cm;
|
---|
2480 | #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
2481 | char cm2[MAX_LINELEN];
|
---|
2482 | char *screenp;
|
---|
2483 | // char cm3[MAX_LINELEN];
|
---|
2484 | int Rrow = last_row;
|
---|
2485 | #endif
|
---|
2486 |
|
---|
2487 | memset(cm1, '\0', MAX_LINELEN); // clear the buffer
|
---|
2488 |
|
---|
2489 | if (row < 0) row = 0;
|
---|
2490 | if (row >= rows) row = rows - 1;
|
---|
2491 | if (col < 0) col = 0;
|
---|
2492 | if (col >= columns) col = columns - 1;
|
---|
2493 |
|
---|
2494 | //----- 1. Try the standard terminal ESC sequence
|
---|
2495 | sprintf(cm1, CMrc, row + 1, col + 1);
|
---|
2496 | cm = cm1;
|
---|
2497 | if (!opti)
|
---|
2498 | goto pc0;
|
---|
2499 |
|
---|
2500 | #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
2501 | //----- find the minimum # of chars to move cursor -------------
|
---|
2502 | //----- 2. Try moving with discreet chars (Newline, [back]space, ...)
|
---|
2503 | memset(cm2, '\0', MAX_LINELEN); // clear the buffer
|
---|
2504 |
|
---|
2505 | // move to the correct row
|
---|
2506 | while (row < Rrow) {
|
---|
2507 | // the cursor has to move up
|
---|
2508 | strcat(cm2, CMup);
|
---|
2509 | Rrow--;
|
---|
2510 | }
|
---|
2511 | while (row > Rrow) {
|
---|
2512 | // the cursor has to move down
|
---|
2513 | strcat(cm2, CMdown);
|
---|
2514 | Rrow++;
|
---|
2515 | }
|
---|
2516 |
|
---|
2517 | // now move to the correct column
|
---|
2518 | strcat(cm2, "\r"); // start at col 0
|
---|
2519 | // just send out orignal source char to get to correct place
|
---|
2520 | screenp = &screen[row * columns]; // start of screen line
|
---|
2521 | strncat(cm2, screenp, col);
|
---|
2522 |
|
---|
2523 | //----- 3. Try some other way of moving cursor
|
---|
2524 | //---------------------------------------------
|
---|
2525 |
|
---|
2526 | // pick the shortest cursor motion to send out
|
---|
2527 | cm = cm1;
|
---|
2528 | if (strlen(cm2) < strlen(cm)) {
|
---|
2529 | cm = cm2;
|
---|
2530 | } /* else if (strlen(cm3) < strlen(cm)) {
|
---|
2531 | cm= cm3;
|
---|
2532 | } */
|
---|
2533 | #endif /* FEATURE_VI_OPTIMIZE_CURSOR */
|
---|
2534 | pc0:
|
---|
2535 | write1(cm); // move the cursor
|
---|
2536 | }
|
---|
2537 |
|
---|
2538 | //----- Erase from cursor to end of line -----------------------
|
---|
2539 | static void clear_to_eol(void)
|
---|
2540 | {
|
---|
2541 | write1(Ceol); // Erase from cursor to end of line
|
---|
2542 | }
|
---|
2543 |
|
---|
2544 | //----- Erase from cursor to end of screen -----------------------
|
---|
2545 | static void clear_to_eos(void)
|
---|
2546 | {
|
---|
2547 | write1(Ceos); // Erase from cursor to end of screen
|
---|
2548 | }
|
---|
2549 |
|
---|
2550 | //----- Start standout mode ------------------------------------
|
---|
2551 | static void standout_start(void) // send "start reverse video" sequence
|
---|
2552 | {
|
---|
2553 | write1(SOs); // Start reverse video mode
|
---|
2554 | }
|
---|
2555 |
|
---|
2556 | //----- End standout mode --------------------------------------
|
---|
2557 | static void standout_end(void) // send "end reverse video" sequence
|
---|
2558 | {
|
---|
2559 | write1(SOn); // End reverse video mode
|
---|
2560 | }
|
---|
2561 |
|
---|
2562 | //----- Flash the screen --------------------------------------
|
---|
2563 | static void flash(int h)
|
---|
2564 | {
|
---|
2565 | standout_start(); // send "start reverse video" sequence
|
---|
2566 | redraw(TRUE);
|
---|
2567 | mysleep(h);
|
---|
2568 | standout_end(); // send "end reverse video" sequence
|
---|
2569 | redraw(TRUE);
|
---|
2570 | }
|
---|
2571 |
|
---|
2572 | static void Indicate_Error(void)
|
---|
2573 | {
|
---|
2574 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
2575 | if (crashme > 0)
|
---|
2576 | return; // generate a random command
|
---|
2577 | #endif
|
---|
2578 | if (!err_method) {
|
---|
2579 | write1(bell); // send out a bell character
|
---|
2580 | } else {
|
---|
2581 | flash(10);
|
---|
2582 | }
|
---|
2583 | }
|
---|
2584 |
|
---|
2585 | //----- Screen[] Routines --------------------------------------
|
---|
2586 | //----- Erase the Screen[] memory ------------------------------
|
---|
2587 | static void screen_erase(void)
|
---|
2588 | {
|
---|
2589 | memset(screen, ' ', screensize); // clear new screen
|
---|
2590 | }
|
---|
2591 |
|
---|
2592 | static int bufsum(char *buf, int count)
|
---|
2593 | {
|
---|
2594 | int sum = 0;
|
---|
2595 | char *e = buf + count;
|
---|
2596 |
|
---|
2597 | while (buf < e)
|
---|
2598 | sum += (unsigned char) *buf++;
|
---|
2599 | return sum;
|
---|
2600 | }
|
---|
2601 |
|
---|
2602 | //----- Draw the status line at bottom of the screen -------------
|
---|
2603 | static void show_status_line(void)
|
---|
2604 | {
|
---|
2605 | int cnt = 0, cksum = 0;
|
---|
2606 |
|
---|
2607 | // either we already have an error or status message, or we
|
---|
2608 | // create one.
|
---|
2609 | if (!have_status_msg) {
|
---|
2610 | cnt = format_edit_status();
|
---|
2611 | cksum = bufsum(status_buffer, cnt);
|
---|
2612 | }
|
---|
2613 | if (have_status_msg || ((cnt > 0 && last_status_cksum != cksum))) {
|
---|
2614 | last_status_cksum= cksum; // remember if we have seen this line
|
---|
2615 | place_cursor(rows - 1, 0, FALSE); // put cursor on status line
|
---|
2616 | write1(status_buffer);
|
---|
2617 | clear_to_eol();
|
---|
2618 | if (have_status_msg) {
|
---|
2619 | if (((int)strlen(status_buffer) - (have_status_msg - 1)) >
|
---|
2620 | (columns - 1) ) {
|
---|
2621 | have_status_msg = 0;
|
---|
2622 | Hit_Return();
|
---|
2623 | }
|
---|
2624 | have_status_msg = 0;
|
---|
2625 | }
|
---|
2626 | place_cursor(crow, ccol, FALSE); // put cursor back in correct place
|
---|
2627 | }
|
---|
2628 | fflush(stdout);
|
---|
2629 | }
|
---|
2630 |
|
---|
2631 | //----- format the status buffer, the bottom line of screen ------
|
---|
2632 | // format status buffer, with STANDOUT mode
|
---|
2633 | static void psbs(const char *format, ...)
|
---|
2634 | {
|
---|
2635 | va_list args;
|
---|
2636 |
|
---|
2637 | va_start(args, format);
|
---|
2638 | strcpy(status_buffer, SOs); // Terminal standout mode on
|
---|
2639 | vsprintf(status_buffer + strlen(status_buffer), format, args);
|
---|
2640 | strcat(status_buffer, SOn); // Terminal standout mode off
|
---|
2641 | va_end(args);
|
---|
2642 |
|
---|
2643 | have_status_msg = 1 + sizeof(SOs) + sizeof(SOn) - 2;
|
---|
2644 | }
|
---|
2645 |
|
---|
2646 | // format status buffer
|
---|
2647 | static void psb(const char *format, ...)
|
---|
2648 | {
|
---|
2649 | va_list args;
|
---|
2650 |
|
---|
2651 | va_start(args, format);
|
---|
2652 | vsprintf(status_buffer, format, args);
|
---|
2653 | va_end(args);
|
---|
2654 |
|
---|
2655 | have_status_msg = 1;
|
---|
2656 | }
|
---|
2657 |
|
---|
2658 | static void ni(const char * s) // display messages
|
---|
2659 | {
|
---|
2660 | char buf[MAX_LINELEN];
|
---|
2661 |
|
---|
2662 | print_literal(buf, s);
|
---|
2663 | psbs("\'%s\' is not implemented", buf);
|
---|
2664 | }
|
---|
2665 |
|
---|
2666 | static int format_edit_status(void) // show file status on status line
|
---|
2667 | {
|
---|
2668 | static int tot;
|
---|
2669 | static const char cmd_mode_indicator[] ALIGN1 = "-IR-";
|
---|
2670 | int cur, percent, ret, trunc_at;
|
---|
2671 |
|
---|
2672 | // file_modified is now a counter rather than a flag. this
|
---|
2673 | // helps reduce the amount of line counting we need to do.
|
---|
2674 | // (this will cause a mis-reporting of modified status
|
---|
2675 | // once every MAXINT editing operations.)
|
---|
2676 |
|
---|
2677 | // it would be nice to do a similar optimization here -- if
|
---|
2678 | // we haven't done a motion that could have changed which line
|
---|
2679 | // we're on, then we shouldn't have to do this count_lines()
|
---|
2680 | cur = count_lines(text, dot);
|
---|
2681 |
|
---|
2682 | // reduce counting -- the total lines can't have
|
---|
2683 | // changed if we haven't done any edits.
|
---|
2684 | if (file_modified != last_file_modified) {
|
---|
2685 | tot = cur + count_lines(dot, end - 1) - 1;
|
---|
2686 | last_file_modified = file_modified;
|
---|
2687 | }
|
---|
2688 |
|
---|
2689 | // current line percent
|
---|
2690 | // ------------- ~~ ----------
|
---|
2691 | // total lines 100
|
---|
2692 | if (tot > 0) {
|
---|
2693 | percent = (100 * cur) / tot;
|
---|
2694 | } else {
|
---|
2695 | cur = tot = 0;
|
---|
2696 | percent = 100;
|
---|
2697 | }
|
---|
2698 |
|
---|
2699 | trunc_at = columns < STATUS_BUFFER_LEN-1 ?
|
---|
2700 | columns : STATUS_BUFFER_LEN-1;
|
---|
2701 |
|
---|
2702 | ret = snprintf(status_buffer, trunc_at+1,
|
---|
2703 | #if ENABLE_FEATURE_VI_READONLY
|
---|
2704 | "%c %s%s%s %d/%d %d%%",
|
---|
2705 | #else
|
---|
2706 | "%c %s%s %d/%d %d%%",
|
---|
2707 | #endif
|
---|
2708 | cmd_mode_indicator[cmd_mode & 3],
|
---|
2709 | (current_filename != NULL ? current_filename : "No file"),
|
---|
2710 | #if ENABLE_FEATURE_VI_READONLY
|
---|
2711 | (readonly_mode ? " [Readonly]" : ""),
|
---|
2712 | #endif
|
---|
2713 | (file_modified ? " [Modified]" : ""),
|
---|
2714 | cur, tot, percent);
|
---|
2715 |
|
---|
2716 | if (ret >= 0 && ret < trunc_at)
|
---|
2717 | return ret; /* it all fit */
|
---|
2718 |
|
---|
2719 | return trunc_at; /* had to truncate */
|
---|
2720 | }
|
---|
2721 |
|
---|
2722 | //----- Force refresh of all Lines -----------------------------
|
---|
2723 | static void redraw(int full_screen)
|
---|
2724 | {
|
---|
2725 | place_cursor(0, 0, FALSE); // put cursor in correct place
|
---|
2726 | clear_to_eos(); // tel terminal to erase display
|
---|
2727 | screen_erase(); // erase the internal screen buffer
|
---|
2728 | last_status_cksum = 0; // force status update
|
---|
2729 | refresh(full_screen); // this will redraw the entire display
|
---|
2730 | show_status_line();
|
---|
2731 | }
|
---|
2732 |
|
---|
2733 | //----- Format a text[] line into a buffer ---------------------
|
---|
2734 | static void format_line(char *dest, char *src, int li)
|
---|
2735 | {
|
---|
2736 | int co;
|
---|
2737 | char c;
|
---|
2738 |
|
---|
2739 | for (co = 0; co < MAX_SCR_COLS; co++) {
|
---|
2740 | c = ' '; // assume blank
|
---|
2741 | if (li > 0 && co == 0) {
|
---|
2742 | c = '~'; // not first line, assume Tilde
|
---|
2743 | }
|
---|
2744 | // are there chars in text[] and have we gone past the end
|
---|
2745 | if (text < end && src < end) {
|
---|
2746 | c = *src++;
|
---|
2747 | }
|
---|
2748 | if (c == '\n')
|
---|
2749 | break;
|
---|
2750 | if ((c & 0x80) && !Isprint(c)) {
|
---|
2751 | c = '.';
|
---|
2752 | }
|
---|
2753 | if ((unsigned char)(c) < ' ' || c == 0x7f) {
|
---|
2754 | if (c == '\t') {
|
---|
2755 | c = ' ';
|
---|
2756 | // co % 8 != 7
|
---|
2757 | for (; (co % tabstop) != (tabstop - 1); co++) {
|
---|
2758 | dest[co] = c;
|
---|
2759 | }
|
---|
2760 | } else {
|
---|
2761 | dest[co++] = '^';
|
---|
2762 | if (c == 0x7f)
|
---|
2763 | c = '?';
|
---|
2764 | else
|
---|
2765 | c += '@'; // make it visible
|
---|
2766 | }
|
---|
2767 | }
|
---|
2768 | // the co++ is done here so that the column will
|
---|
2769 | // not be overwritten when we blank-out the rest of line
|
---|
2770 | dest[co] = c;
|
---|
2771 | if (src >= end)
|
---|
2772 | break;
|
---|
2773 | }
|
---|
2774 | }
|
---|
2775 |
|
---|
2776 | //----- Refresh the changed screen lines -----------------------
|
---|
2777 | // Copy the source line from text[] into the buffer and note
|
---|
2778 | // if the current screenline is different from the new buffer.
|
---|
2779 | // If they differ then that line needs redrawing on the terminal.
|
---|
2780 | //
|
---|
2781 | static void refresh(int full_screen)
|
---|
2782 | {
|
---|
2783 | static int old_offset;
|
---|
2784 |
|
---|
2785 | int li, changed;
|
---|
2786 | char buf[MAX_SCR_COLS];
|
---|
2787 | char *tp, *sp; // pointer into text[] and screen[]
|
---|
2788 | #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
2789 | int last_li = -2; // last line that changed- for optimizing cursor movement
|
---|
2790 | #endif
|
---|
2791 |
|
---|
2792 | if (ENABLE_FEATURE_VI_WIN_RESIZE)
|
---|
2793 | get_terminal_width_height(0, &columns, &rows);
|
---|
2794 | sync_cursor(dot, &crow, &ccol); // where cursor will be (on "dot")
|
---|
2795 | tp = screenbegin; // index into text[] of top line
|
---|
2796 |
|
---|
2797 | // compare text[] to screen[] and mark screen[] lines that need updating
|
---|
2798 | for (li = 0; li < rows - 1; li++) {
|
---|
2799 | int cs, ce; // column start & end
|
---|
2800 | memset(buf, ' ', MAX_SCR_COLS); // blank-out the buffer
|
---|
2801 | buf[MAX_SCR_COLS-1] = 0; // NULL terminate the buffer
|
---|
2802 | // format current text line into buf
|
---|
2803 | format_line(buf, tp, li);
|
---|
2804 |
|
---|
2805 | // skip to the end of the current text[] line
|
---|
2806 | while (tp < end && *tp++ != '\n') /*no-op*/;
|
---|
2807 |
|
---|
2808 | // see if there are any changes between vitual screen and buf
|
---|
2809 | changed = FALSE; // assume no change
|
---|
2810 | cs= 0;
|
---|
2811 | ce= columns-1;
|
---|
2812 | sp = &screen[li * columns]; // start of screen line
|
---|
2813 | if (full_screen) {
|
---|
2814 | // force re-draw of every single column from 0 - columns-1
|
---|
2815 | goto re0;
|
---|
2816 | }
|
---|
2817 | // compare newly formatted buffer with virtual screen
|
---|
2818 | // look forward for first difference between buf and screen
|
---|
2819 | for (; cs <= ce; cs++) {
|
---|
2820 | if (buf[cs + offset] != sp[cs]) {
|
---|
2821 | changed = TRUE; // mark for redraw
|
---|
2822 | break;
|
---|
2823 | }
|
---|
2824 | }
|
---|
2825 |
|
---|
2826 | // look backward for last difference between buf and screen
|
---|
2827 | for ( ; ce >= cs; ce--) {
|
---|
2828 | if (buf[ce + offset] != sp[ce]) {
|
---|
2829 | changed = TRUE; // mark for redraw
|
---|
2830 | break;
|
---|
2831 | }
|
---|
2832 | }
|
---|
2833 | // now, cs is index of first diff, and ce is index of last diff
|
---|
2834 |
|
---|
2835 | // if horz offset has changed, force a redraw
|
---|
2836 | if (offset != old_offset) {
|
---|
2837 | re0:
|
---|
2838 | changed = TRUE;
|
---|
2839 | }
|
---|
2840 |
|
---|
2841 | // make a sanity check of columns indexes
|
---|
2842 | if (cs < 0) cs= 0;
|
---|
2843 | if (ce > columns-1) ce= columns-1;
|
---|
2844 | if (cs > ce) { cs= 0; ce= columns-1; }
|
---|
2845 | // is there a change between vitual screen and buf
|
---|
2846 | if (changed) {
|
---|
2847 | // copy changed part of buffer to virtual screen
|
---|
2848 | memmove(sp+cs, buf+(cs+offset), ce-cs+1);
|
---|
2849 |
|
---|
2850 | // move cursor to column of first change
|
---|
2851 | if (offset != old_offset) {
|
---|
2852 | // opti_cur_move is still too stupid
|
---|
2853 | // to handle offsets correctly
|
---|
2854 | place_cursor(li, cs, FALSE);
|
---|
2855 | } else {
|
---|
2856 | #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
2857 | // if this just the next line
|
---|
2858 | // try to optimize cursor movement
|
---|
2859 | // otherwise, use standard ESC sequence
|
---|
2860 | place_cursor(li, cs, li == (last_li+1) ? TRUE : FALSE);
|
---|
2861 | last_li= li;
|
---|
2862 | #else
|
---|
2863 | place_cursor(li, cs, FALSE); // use standard ESC sequence
|
---|
2864 | #endif /* FEATURE_VI_OPTIMIZE_CURSOR */
|
---|
2865 | }
|
---|
2866 |
|
---|
2867 | // write line out to terminal
|
---|
2868 | {
|
---|
2869 | int nic = ce - cs + 1;
|
---|
2870 | char *out = sp + cs;
|
---|
2871 |
|
---|
2872 | while (nic-- > 0) {
|
---|
2873 | putchar(*out);
|
---|
2874 | out++;
|
---|
2875 | }
|
---|
2876 | }
|
---|
2877 | #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
2878 | last_row = li;
|
---|
2879 | #endif
|
---|
2880 | }
|
---|
2881 | }
|
---|
2882 |
|
---|
2883 | #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
2884 | place_cursor(crow, ccol, (crow == last_row) ? TRUE : FALSE);
|
---|
2885 | last_row = crow;
|
---|
2886 | #else
|
---|
2887 | place_cursor(crow, ccol, FALSE);
|
---|
2888 | #endif
|
---|
2889 |
|
---|
2890 | if (offset != old_offset)
|
---|
2891 | old_offset = offset;
|
---|
2892 | }
|
---|
2893 |
|
---|
2894 | //---------------------------------------------------------------------
|
---|
2895 | //----- the Ascii Chart -----------------------------------------------
|
---|
2896 | //
|
---|
2897 | // 00 nul 01 soh 02 stx 03 etx 04 eot 05 enq 06 ack 07 bel
|
---|
2898 | // 08 bs 09 ht 0a nl 0b vt 0c np 0d cr 0e so 0f si
|
---|
2899 | // 10 dle 11 dc1 12 dc2 13 dc3 14 dc4 15 nak 16 syn 17 etb
|
---|
2900 | // 18 can 19 em 1a sub 1b esc 1c fs 1d gs 1e rs 1f us
|
---|
2901 | // 20 sp 21 ! 22 " 23 # 24 $ 25 % 26 & 27 '
|
---|
2902 | // 28 ( 29 ) 2a * 2b + 2c , 2d - 2e . 2f /
|
---|
2903 | // 30 0 31 1 32 2 33 3 34 4 35 5 36 6 37 7
|
---|
2904 | // 38 8 39 9 3a : 3b ; 3c < 3d = 3e > 3f ?
|
---|
2905 | // 40 @ 41 A 42 B 43 C 44 D 45 E 46 F 47 G
|
---|
2906 | // 48 H 49 I 4a J 4b K 4c L 4d M 4e N 4f O
|
---|
2907 | // 50 P 51 Q 52 R 53 S 54 T 55 U 56 V 57 W
|
---|
2908 | // 58 X 59 Y 5a Z 5b [ 5c \ 5d ] 5e ^ 5f _
|
---|
2909 | // 60 ` 61 a 62 b 63 c 64 d 65 e 66 f 67 g
|
---|
2910 | // 68 h 69 i 6a j 6b k 6c l 6d m 6e n 6f o
|
---|
2911 | // 70 p 71 q 72 r 73 s 74 t 75 u 76 v 77 w
|
---|
2912 | // 78 x 79 y 7a z 7b { 7c | 7d } 7e ~ 7f del
|
---|
2913 | //---------------------------------------------------------------------
|
---|
2914 |
|
---|
2915 | //----- Execute a Vi Command -----------------------------------
|
---|
2916 | static void do_cmd(char c)
|
---|
2917 | {
|
---|
2918 | const char *msg;
|
---|
2919 | char c1, *p, *q, buf[9], *save_dot;
|
---|
2920 | int cnt, i, j, dir, yf;
|
---|
2921 |
|
---|
2922 | c1 = c; // quiet the compiler
|
---|
2923 | cnt = yf = dir = 0; // quiet the compiler
|
---|
2924 | msg = p = q = save_dot = buf; // quiet the compiler
|
---|
2925 | memset(buf, '\0', 9); // clear buf
|
---|
2926 |
|
---|
2927 | show_status_line();
|
---|
2928 |
|
---|
2929 | /* if this is a cursor key, skip these checks */
|
---|
2930 | switch (c) {
|
---|
2931 | case VI_K_UP:
|
---|
2932 | case VI_K_DOWN:
|
---|
2933 | case VI_K_LEFT:
|
---|
2934 | case VI_K_RIGHT:
|
---|
2935 | case VI_K_HOME:
|
---|
2936 | case VI_K_END:
|
---|
2937 | case VI_K_PAGEUP:
|
---|
2938 | case VI_K_PAGEDOWN:
|
---|
2939 | goto key_cmd_mode;
|
---|
2940 | }
|
---|
2941 |
|
---|
2942 | if (cmd_mode == 2) {
|
---|
2943 | // flip-flop Insert/Replace mode
|
---|
2944 | if (c == VI_K_INSERT)
|
---|
2945 | goto dc_i;
|
---|
2946 | // we are 'R'eplacing the current *dot with new char
|
---|
2947 | if (*dot == '\n') {
|
---|
2948 | // don't Replace past E-o-l
|
---|
2949 | cmd_mode = 1; // convert to insert
|
---|
2950 | } else {
|
---|
2951 | if (1 <= c || Isprint(c)) {
|
---|
2952 | if (c != 27)
|
---|
2953 | dot = yank_delete(dot, dot, 0, YANKDEL); // delete char
|
---|
2954 | dot = char_insert(dot, c); // insert new char
|
---|
2955 | }
|
---|
2956 | goto dc1;
|
---|
2957 | }
|
---|
2958 | }
|
---|
2959 | if (cmd_mode == 1) {
|
---|
2960 | // hitting "Insert" twice means "R" replace mode
|
---|
2961 | if (c == VI_K_INSERT) goto dc5;
|
---|
2962 | // insert the char c at "dot"
|
---|
2963 | if (1 <= c || Isprint(c)) {
|
---|
2964 | dot = char_insert(dot, c);
|
---|
2965 | }
|
---|
2966 | goto dc1;
|
---|
2967 | }
|
---|
2968 |
|
---|
2969 | key_cmd_mode:
|
---|
2970 | switch (c) {
|
---|
2971 | //case 0x01: // soh
|
---|
2972 | //case 0x09: // ht
|
---|
2973 | //case 0x0b: // vt
|
---|
2974 | //case 0x0e: // so
|
---|
2975 | //case 0x0f: // si
|
---|
2976 | //case 0x10: // dle
|
---|
2977 | //case 0x11: // dc1
|
---|
2978 | //case 0x13: // dc3
|
---|
2979 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
2980 | case 0x14: // dc4 ctrl-T
|
---|
2981 | crashme = (crashme == 0) ? 1 : 0;
|
---|
2982 | break;
|
---|
2983 | #endif
|
---|
2984 | //case 0x16: // syn
|
---|
2985 | //case 0x17: // etb
|
---|
2986 | //case 0x18: // can
|
---|
2987 | //case 0x1c: // fs
|
---|
2988 | //case 0x1d: // gs
|
---|
2989 | //case 0x1e: // rs
|
---|
2990 | //case 0x1f: // us
|
---|
2991 | //case '!': // !-
|
---|
2992 | //case '#': // #-
|
---|
2993 | //case '&': // &-
|
---|
2994 | //case '(': // (-
|
---|
2995 | //case ')': // )-
|
---|
2996 | //case '*': // *-
|
---|
2997 | //case ',': // ,-
|
---|
2998 | //case '=': // =-
|
---|
2999 | //case '@': // @-
|
---|
3000 | //case 'F': // F-
|
---|
3001 | //case 'K': // K-
|
---|
3002 | //case 'Q': // Q-
|
---|
3003 | //case 'S': // S-
|
---|
3004 | //case 'T': // T-
|
---|
3005 | //case 'V': // V-
|
---|
3006 | //case '[': // [-
|
---|
3007 | //case '\\': // \-
|
---|
3008 | //case ']': // ]-
|
---|
3009 | //case '_': // _-
|
---|
3010 | //case '`': // `-
|
---|
3011 | //case 'g': // g-
|
---|
3012 | //case 'u': // u- FIXME- there is no undo
|
---|
3013 | //case 'v': // v-
|
---|
3014 | default: // unrecognised command
|
---|
3015 | buf[0] = c;
|
---|
3016 | buf[1] = '\0';
|
---|
3017 | if (c < ' ') {
|
---|
3018 | buf[0] = '^';
|
---|
3019 | buf[1] = c + '@';
|
---|
3020 | buf[2] = '\0';
|
---|
3021 | }
|
---|
3022 | ni(buf);
|
---|
3023 | end_cmd_q(); // stop adding to q
|
---|
3024 | case 0x00: // nul- ignore
|
---|
3025 | break;
|
---|
3026 | case 2: // ctrl-B scroll up full screen
|
---|
3027 | case VI_K_PAGEUP: // Cursor Key Page Up
|
---|
3028 | dot_scroll(rows - 2, -1);
|
---|
3029 | break;
|
---|
3030 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
3031 | case 0x03: // ctrl-C interrupt
|
---|
3032 | longjmp(restart, 1);
|
---|
3033 | break;
|
---|
3034 | case 26: // ctrl-Z suspend
|
---|
3035 | suspend_sig(SIGTSTP);
|
---|
3036 | break;
|
---|
3037 | #endif
|
---|
3038 | case 4: // ctrl-D scroll down half screen
|
---|
3039 | dot_scroll((rows - 2) / 2, 1);
|
---|
3040 | break;
|
---|
3041 | case 5: // ctrl-E scroll down one line
|
---|
3042 | dot_scroll(1, 1);
|
---|
3043 | break;
|
---|
3044 | case 6: // ctrl-F scroll down full screen
|
---|
3045 | case VI_K_PAGEDOWN: // Cursor Key Page Down
|
---|
3046 | dot_scroll(rows - 2, 1);
|
---|
3047 | break;
|
---|
3048 | case 7: // ctrl-G show current status
|
---|
3049 | last_status_cksum = 0; // force status update
|
---|
3050 | break;
|
---|
3051 | case 'h': // h- move left
|
---|
3052 | case VI_K_LEFT: // cursor key Left
|
---|
3053 | case 8: // ctrl-H- move left (This may be ERASE char)
|
---|
3054 | case 0x7f: // DEL- move left (This may be ERASE char)
|
---|
3055 | if (cmdcnt-- > 1) {
|
---|
3056 | do_cmd(c);
|
---|
3057 | } // repeat cnt
|
---|
3058 | dot_left();
|
---|
3059 | break;
|
---|
3060 | case 10: // Newline ^J
|
---|
3061 | case 'j': // j- goto next line, same col
|
---|
3062 | case VI_K_DOWN: // cursor key Down
|
---|
3063 | if (cmdcnt-- > 1) {
|
---|
3064 | do_cmd(c);
|
---|
3065 | } // repeat cnt
|
---|
3066 | dot_next(); // go to next B-o-l
|
---|
3067 | dot = move_to_col(dot, ccol + offset); // try stay in same col
|
---|
3068 | break;
|
---|
3069 | case 12: // ctrl-L force redraw whole screen
|
---|
3070 | case 18: // ctrl-R force redraw
|
---|
3071 | place_cursor(0, 0, FALSE); // put cursor in correct place
|
---|
3072 | clear_to_eos(); // tel terminal to erase display
|
---|
3073 | mysleep(10);
|
---|
3074 | screen_erase(); // erase the internal screen buffer
|
---|
3075 | last_status_cksum = 0; // force status update
|
---|
3076 | refresh(TRUE); // this will redraw the entire display
|
---|
3077 | break;
|
---|
3078 | case 13: // Carriage Return ^M
|
---|
3079 | case '+': // +- goto next line
|
---|
3080 | if (cmdcnt-- > 1) {
|
---|
3081 | do_cmd(c);
|
---|
3082 | } // repeat cnt
|
---|
3083 | dot_next();
|
---|
3084 | dot_skip_over_ws();
|
---|
3085 | break;
|
---|
3086 | case 21: // ctrl-U scroll up half screen
|
---|
3087 | dot_scroll((rows - 2) / 2, -1);
|
---|
3088 | break;
|
---|
3089 | case 25: // ctrl-Y scroll up one line
|
---|
3090 | dot_scroll(1, -1);
|
---|
3091 | break;
|
---|
3092 | case 27: // esc
|
---|
3093 | if (cmd_mode == 0)
|
---|
3094 | indicate_error(c);
|
---|
3095 | cmd_mode = 0; // stop insrting
|
---|
3096 | end_cmd_q();
|
---|
3097 | last_status_cksum = 0; // force status update
|
---|
3098 | break;
|
---|
3099 | case ' ': // move right
|
---|
3100 | case 'l': // move right
|
---|
3101 | case VI_K_RIGHT: // Cursor Key Right
|
---|
3102 | if (cmdcnt-- > 1) {
|
---|
3103 | do_cmd(c);
|
---|
3104 | } // repeat cnt
|
---|
3105 | dot_right();
|
---|
3106 | break;
|
---|
3107 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
3108 | case '"': // "- name a register to use for Delete/Yank
|
---|
3109 | c1 = get_one_char();
|
---|
3110 | c1 = tolower(c1);
|
---|
3111 | if (islower(c1)) {
|
---|
3112 | YDreg = c1 - 'a';
|
---|
3113 | } else {
|
---|
3114 | indicate_error(c);
|
---|
3115 | }
|
---|
3116 | break;
|
---|
3117 | case '\'': // '- goto a specific mark
|
---|
3118 | c1 = get_one_char();
|
---|
3119 | c1 = tolower(c1);
|
---|
3120 | if (islower(c1)) {
|
---|
3121 | c1 = c1 - 'a';
|
---|
3122 | // get the b-o-l
|
---|
3123 | q = mark[(unsigned char) c1];
|
---|
3124 | if (text <= q && q < end) {
|
---|
3125 | dot = q;
|
---|
3126 | dot_begin(); // go to B-o-l
|
---|
3127 | dot_skip_over_ws();
|
---|
3128 | }
|
---|
3129 | } else if (c1 == '\'') { // goto previous context
|
---|
3130 | dot = swap_context(dot); // swap current and previous context
|
---|
3131 | dot_begin(); // go to B-o-l
|
---|
3132 | dot_skip_over_ws();
|
---|
3133 | } else {
|
---|
3134 | indicate_error(c);
|
---|
3135 | }
|
---|
3136 | break;
|
---|
3137 | case 'm': // m- Mark a line
|
---|
3138 | // this is really stupid. If there are any inserts or deletes
|
---|
3139 | // between text[0] and dot then this mark will not point to the
|
---|
3140 | // correct location! It could be off by many lines!
|
---|
3141 | // Well..., at least its quick and dirty.
|
---|
3142 | c1 = get_one_char();
|
---|
3143 | c1 = tolower(c1);
|
---|
3144 | if (islower(c1)) {
|
---|
3145 | c1 = c1 - 'a';
|
---|
3146 | // remember the line
|
---|
3147 | mark[(int) c1] = dot;
|
---|
3148 | } else {
|
---|
3149 | indicate_error(c);
|
---|
3150 | }
|
---|
3151 | break;
|
---|
3152 | case 'P': // P- Put register before
|
---|
3153 | case 'p': // p- put register after
|
---|
3154 | p = reg[YDreg];
|
---|
3155 | if (p == 0) {
|
---|
3156 | psbs("Nothing in register %c", what_reg());
|
---|
3157 | break;
|
---|
3158 | }
|
---|
3159 | // are we putting whole lines or strings
|
---|
3160 | if (strchr(p, '\n') != NULL) {
|
---|
3161 | if (c == 'P') {
|
---|
3162 | dot_begin(); // putting lines- Put above
|
---|
3163 | }
|
---|
3164 | if (c == 'p') {
|
---|
3165 | // are we putting after very last line?
|
---|
3166 | if (end_line(dot) == (end - 1)) {
|
---|
3167 | dot = end; // force dot to end of text[]
|
---|
3168 | } else {
|
---|
3169 | dot_next(); // next line, then put before
|
---|
3170 | }
|
---|
3171 | }
|
---|
3172 | } else {
|
---|
3173 | if (c == 'p')
|
---|
3174 | dot_right(); // move to right, can move to NL
|
---|
3175 | }
|
---|
3176 | dot = string_insert(dot, p); // insert the string
|
---|
3177 | end_cmd_q(); // stop adding to q
|
---|
3178 | break;
|
---|
3179 | case 'U': // U- Undo; replace current line with original version
|
---|
3180 | if (reg[Ureg] != 0) {
|
---|
3181 | p = begin_line(dot);
|
---|
3182 | q = end_line(dot);
|
---|
3183 | p = text_hole_delete(p, q); // delete cur line
|
---|
3184 | p = string_insert(p, reg[Ureg]); // insert orig line
|
---|
3185 | dot = p;
|
---|
3186 | dot_skip_over_ws();
|
---|
3187 | }
|
---|
3188 | break;
|
---|
3189 | #endif /* FEATURE_VI_YANKMARK */
|
---|
3190 | case '$': // $- goto end of line
|
---|
3191 | case VI_K_END: // Cursor Key End
|
---|
3192 | if (cmdcnt-- > 1) {
|
---|
3193 | do_cmd(c);
|
---|
3194 | } // repeat cnt
|
---|
3195 | dot = end_line(dot);
|
---|
3196 | break;
|
---|
3197 | case '%': // %- find matching char of pair () [] {}
|
---|
3198 | for (q = dot; q < end && *q != '\n'; q++) {
|
---|
3199 | if (strchr("()[]{}", *q) != NULL) {
|
---|
3200 | // we found half of a pair
|
---|
3201 | p = find_pair(q, *q);
|
---|
3202 | if (p == NULL) {
|
---|
3203 | indicate_error(c);
|
---|
3204 | } else {
|
---|
3205 | dot = p;
|
---|
3206 | }
|
---|
3207 | break;
|
---|
3208 | }
|
---|
3209 | }
|
---|
3210 | if (*q == '\n')
|
---|
3211 | indicate_error(c);
|
---|
3212 | break;
|
---|
3213 | case 'f': // f- forward to a user specified char
|
---|
3214 | last_forward_char = get_one_char(); // get the search char
|
---|
3215 | //
|
---|
3216 | // dont separate these two commands. 'f' depends on ';'
|
---|
3217 | //
|
---|
3218 | //**** fall thru to ... ';'
|
---|
3219 | case ';': // ;- look at rest of line for last forward char
|
---|
3220 | if (cmdcnt-- > 1) {
|
---|
3221 | do_cmd(';');
|
---|
3222 | } // repeat cnt
|
---|
3223 | if (last_forward_char == 0)
|
---|
3224 | break;
|
---|
3225 | q = dot + 1;
|
---|
3226 | while (q < end - 1 && *q != '\n' && *q != last_forward_char) {
|
---|
3227 | q++;
|
---|
3228 | }
|
---|
3229 | if (*q == last_forward_char)
|
---|
3230 | dot = q;
|
---|
3231 | break;
|
---|
3232 | case '-': // -- goto prev line
|
---|
3233 | if (cmdcnt-- > 1) {
|
---|
3234 | do_cmd(c);
|
---|
3235 | } // repeat cnt
|
---|
3236 | dot_prev();
|
---|
3237 | dot_skip_over_ws();
|
---|
3238 | break;
|
---|
3239 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
3240 | case '.': // .- repeat the last modifying command
|
---|
3241 | // Stuff the last_modifying_cmd back into stdin
|
---|
3242 | // and let it be re-executed.
|
---|
3243 | if (last_modifying_cmd != 0) {
|
---|
3244 | ioq = ioq_start = xstrdup(last_modifying_cmd);
|
---|
3245 | }
|
---|
3246 | break;
|
---|
3247 | #endif
|
---|
3248 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
3249 | case '?': // /- search for a pattern
|
---|
3250 | case '/': // /- search for a pattern
|
---|
3251 | buf[0] = c;
|
---|
3252 | buf[1] = '\0';
|
---|
3253 | q = get_input_line(buf); // get input line- use "status line"
|
---|
3254 | if (q[0] && !q[1])
|
---|
3255 | goto dc3; // if no pat re-use old pat
|
---|
3256 | if (q[0]) { // strlen(q) > 1: new pat- save it and find
|
---|
3257 | // there is a new pat
|
---|
3258 | free(last_search_pattern);
|
---|
3259 | last_search_pattern = xstrdup(q);
|
---|
3260 | goto dc3; // now find the pattern
|
---|
3261 | }
|
---|
3262 | // user changed mind and erased the "/"- do nothing
|
---|
3263 | break;
|
---|
3264 | case 'N': // N- backward search for last pattern
|
---|
3265 | if (cmdcnt-- > 1) {
|
---|
3266 | do_cmd(c);
|
---|
3267 | } // repeat cnt
|
---|
3268 | dir = BACK; // assume BACKWARD search
|
---|
3269 | p = dot - 1;
|
---|
3270 | if (last_search_pattern[0] == '?') {
|
---|
3271 | dir = FORWARD;
|
---|
3272 | p = dot + 1;
|
---|
3273 | }
|
---|
3274 | goto dc4; // now search for pattern
|
---|
3275 | break;
|
---|
3276 | case 'n': // n- repeat search for last pattern
|
---|
3277 | // search rest of text[] starting at next char
|
---|
3278 | // if search fails return orignal "p" not the "p+1" address
|
---|
3279 | if (cmdcnt-- > 1) {
|
---|
3280 | do_cmd(c);
|
---|
3281 | } // repeat cnt
|
---|
3282 | dc3:
|
---|
3283 | if (last_search_pattern == 0) {
|
---|
3284 | msg = "No previous regular expression";
|
---|
3285 | goto dc2;
|
---|
3286 | }
|
---|
3287 | if (last_search_pattern[0] == '/') {
|
---|
3288 | dir = FORWARD; // assume FORWARD search
|
---|
3289 | p = dot + 1;
|
---|
3290 | }
|
---|
3291 | if (last_search_pattern[0] == '?') {
|
---|
3292 | dir = BACK;
|
---|
3293 | p = dot - 1;
|
---|
3294 | }
|
---|
3295 | dc4:
|
---|
3296 | q = char_search(p, last_search_pattern + 1, dir, FULL);
|
---|
3297 | if (q != NULL) {
|
---|
3298 | dot = q; // good search, update "dot"
|
---|
3299 | msg = "";
|
---|
3300 | goto dc2;
|
---|
3301 | }
|
---|
3302 | // no pattern found between "dot" and "end"- continue at top
|
---|
3303 | p = text;
|
---|
3304 | if (dir == BACK) {
|
---|
3305 | p = end - 1;
|
---|
3306 | }
|
---|
3307 | q = char_search(p, last_search_pattern + 1, dir, FULL);
|
---|
3308 | if (q != NULL) { // found something
|
---|
3309 | dot = q; // found new pattern- goto it
|
---|
3310 | msg = "search hit BOTTOM, continuing at TOP";
|
---|
3311 | if (dir == BACK) {
|
---|
3312 | msg = "search hit TOP, continuing at BOTTOM";
|
---|
3313 | }
|
---|
3314 | } else {
|
---|
3315 | msg = "Pattern not found";
|
---|
3316 | }
|
---|
3317 | dc2:
|
---|
3318 | if (*msg)
|
---|
3319 | psbs("%s", msg);
|
---|
3320 | break;
|
---|
3321 | case '{': // {- move backward paragraph
|
---|
3322 | q = char_search(dot, "\n\n", BACK, FULL);
|
---|
3323 | if (q != NULL) { // found blank line
|
---|
3324 | dot = next_line(q); // move to next blank line
|
---|
3325 | }
|
---|
3326 | break;
|
---|
3327 | case '}': // }- move forward paragraph
|
---|
3328 | q = char_search(dot, "\n\n", FORWARD, FULL);
|
---|
3329 | if (q != NULL) { // found blank line
|
---|
3330 | dot = next_line(q); // move to next blank line
|
---|
3331 | }
|
---|
3332 | break;
|
---|
3333 | #endif /* FEATURE_VI_SEARCH */
|
---|
3334 | case '0': // 0- goto begining of line
|
---|
3335 | case '1': // 1-
|
---|
3336 | case '2': // 2-
|
---|
3337 | case '3': // 3-
|
---|
3338 | case '4': // 4-
|
---|
3339 | case '5': // 5-
|
---|
3340 | case '6': // 6-
|
---|
3341 | case '7': // 7-
|
---|
3342 | case '8': // 8-
|
---|
3343 | case '9': // 9-
|
---|
3344 | if (c == '0' && cmdcnt < 1) {
|
---|
3345 | dot_begin(); // this was a standalone zero
|
---|
3346 | } else {
|
---|
3347 | cmdcnt = cmdcnt * 10 + (c - '0'); // this 0 is part of a number
|
---|
3348 | }
|
---|
3349 | break;
|
---|
3350 | case ':': // :- the colon mode commands
|
---|
3351 | p = get_input_line(":"); // get input line- use "status line"
|
---|
3352 | #if ENABLE_FEATURE_VI_COLON
|
---|
3353 | colon(p); // execute the command
|
---|
3354 | #else
|
---|
3355 | if (*p == ':')
|
---|
3356 | p++; // move past the ':'
|
---|
3357 | cnt = strlen(p);
|
---|
3358 | if (cnt <= 0)
|
---|
3359 | break;
|
---|
3360 | if (strncasecmp(p, "quit", cnt) == 0
|
---|
3361 | || strncasecmp(p, "q!", cnt) == 0 // delete lines
|
---|
3362 | ) {
|
---|
3363 | if (file_modified && p[1] != '!') {
|
---|
3364 | psbs("No write since last change (:quit! overrides)");
|
---|
3365 | } else {
|
---|
3366 | editing = 0;
|
---|
3367 | }
|
---|
3368 | } else if (strncasecmp(p, "write", cnt) == 0
|
---|
3369 | || strncasecmp(p, "wq", cnt) == 0
|
---|
3370 | || strncasecmp(p, "wn", cnt) == 0
|
---|
3371 | || strncasecmp(p, "x", cnt) == 0
|
---|
3372 | ) {
|
---|
3373 | cnt = file_write(current_filename, text, end - 1);
|
---|
3374 | if (cnt < 0) {
|
---|
3375 | if (cnt == -1)
|
---|
3376 | psbs("Write error: %s", strerror(errno));
|
---|
3377 | } else {
|
---|
3378 | file_modified = 0;
|
---|
3379 | last_file_modified = -1;
|
---|
3380 | psb("\"%s\" %dL, %dC", current_filename, count_lines(text, end - 1), cnt);
|
---|
3381 | if (p[0] == 'x' || p[1] == 'q' || p[1] == 'n'
|
---|
3382 | || p[0] == 'X' || p[1] == 'Q' || p[1] == 'N'
|
---|
3383 | ) {
|
---|
3384 | editing = 0;
|
---|
3385 | }
|
---|
3386 | }
|
---|
3387 | } else if (strncasecmp(p, "file", cnt) == 0) {
|
---|
3388 | last_status_cksum = 0; // force status update
|
---|
3389 | } else if (sscanf(p, "%d", &j) > 0) {
|
---|
3390 | dot = find_line(j); // go to line # j
|
---|
3391 | dot_skip_over_ws();
|
---|
3392 | } else { // unrecognised cmd
|
---|
3393 | ni(p);
|
---|
3394 | }
|
---|
3395 | #endif /* !FEATURE_VI_COLON */
|
---|
3396 | break;
|
---|
3397 | case '<': // <- Left shift something
|
---|
3398 | case '>': // >- Right shift something
|
---|
3399 | cnt = count_lines(text, dot); // remember what line we are on
|
---|
3400 | c1 = get_one_char(); // get the type of thing to delete
|
---|
3401 | find_range(&p, &q, c1);
|
---|
3402 | yank_delete(p, q, 1, YANKONLY); // save copy before change
|
---|
3403 | p = begin_line(p);
|
---|
3404 | q = end_line(q);
|
---|
3405 | i = count_lines(p, q); // # of lines we are shifting
|
---|
3406 | for ( ; i > 0; i--, p = next_line(p)) {
|
---|
3407 | if (c == '<') {
|
---|
3408 | // shift left- remove tab or 8 spaces
|
---|
3409 | if (*p == '\t') {
|
---|
3410 | // shrink buffer 1 char
|
---|
3411 | text_hole_delete(p, p);
|
---|
3412 | } else if (*p == ' ') {
|
---|
3413 | // we should be calculating columns, not just SPACE
|
---|
3414 | for (j = 0; *p == ' ' && j < tabstop; j++) {
|
---|
3415 | text_hole_delete(p, p);
|
---|
3416 | }
|
---|
3417 | }
|
---|
3418 | } else if (c == '>') {
|
---|
3419 | // shift right -- add tab or 8 spaces
|
---|
3420 | char_insert(p, '\t');
|
---|
3421 | }
|
---|
3422 | }
|
---|
3423 | dot = find_line(cnt); // what line were we on
|
---|
3424 | dot_skip_over_ws();
|
---|
3425 | end_cmd_q(); // stop adding to q
|
---|
3426 | break;
|
---|
3427 | case 'A': // A- append at e-o-l
|
---|
3428 | dot_end(); // go to e-o-l
|
---|
3429 | //**** fall thru to ... 'a'
|
---|
3430 | case 'a': // a- append after current char
|
---|
3431 | if (*dot != '\n')
|
---|
3432 | dot++;
|
---|
3433 | goto dc_i;
|
---|
3434 | break;
|
---|
3435 | case 'B': // B- back a blank-delimited Word
|
---|
3436 | case 'E': // E- end of a blank-delimited word
|
---|
3437 | case 'W': // W- forward a blank-delimited word
|
---|
3438 | if (cmdcnt-- > 1) {
|
---|
3439 | do_cmd(c);
|
---|
3440 | } // repeat cnt
|
---|
3441 | dir = FORWARD;
|
---|
3442 | if (c == 'B')
|
---|
3443 | dir = BACK;
|
---|
3444 | if (c == 'W' || isspace(dot[dir])) {
|
---|
3445 | dot = skip_thing(dot, 1, dir, S_TO_WS);
|
---|
3446 | dot = skip_thing(dot, 2, dir, S_OVER_WS);
|
---|
3447 | }
|
---|
3448 | if (c != 'W')
|
---|
3449 | dot = skip_thing(dot, 1, dir, S_BEFORE_WS);
|
---|
3450 | break;
|
---|
3451 | case 'C': // C- Change to e-o-l
|
---|
3452 | case 'D': // D- delete to e-o-l
|
---|
3453 | save_dot = dot;
|
---|
3454 | dot = dollar_line(dot); // move to before NL
|
---|
3455 | // copy text into a register and delete
|
---|
3456 | dot = yank_delete(save_dot, dot, 0, YANKDEL); // delete to e-o-l
|
---|
3457 | if (c == 'C')
|
---|
3458 | goto dc_i; // start inserting
|
---|
3459 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
3460 | if (c == 'D')
|
---|
3461 | end_cmd_q(); // stop adding to q
|
---|
3462 | #endif
|
---|
3463 | break;
|
---|
3464 | case 'G': // G- goto to a line number (default= E-O-F)
|
---|
3465 | dot = end - 1; // assume E-O-F
|
---|
3466 | if (cmdcnt > 0) {
|
---|
3467 | dot = find_line(cmdcnt); // what line is #cmdcnt
|
---|
3468 | }
|
---|
3469 | dot_skip_over_ws();
|
---|
3470 | break;
|
---|
3471 | case 'H': // H- goto top line on screen
|
---|
3472 | dot = screenbegin;
|
---|
3473 | if (cmdcnt > (rows - 1)) {
|
---|
3474 | cmdcnt = (rows - 1);
|
---|
3475 | }
|
---|
3476 | if (cmdcnt-- > 1) {
|
---|
3477 | do_cmd('+');
|
---|
3478 | } // repeat cnt
|
---|
3479 | dot_skip_over_ws();
|
---|
3480 | break;
|
---|
3481 | case 'I': // I- insert before first non-blank
|
---|
3482 | dot_begin(); // 0
|
---|
3483 | dot_skip_over_ws();
|
---|
3484 | //**** fall thru to ... 'i'
|
---|
3485 | case 'i': // i- insert before current char
|
---|
3486 | case VI_K_INSERT: // Cursor Key Insert
|
---|
3487 | dc_i:
|
---|
3488 | cmd_mode = 1; // start insrting
|
---|
3489 | break;
|
---|
3490 | case 'J': // J- join current and next lines together
|
---|
3491 | if (cmdcnt-- > 2) {
|
---|
3492 | do_cmd(c);
|
---|
3493 | } // repeat cnt
|
---|
3494 | dot_end(); // move to NL
|
---|
3495 | if (dot < end - 1) { // make sure not last char in text[]
|
---|
3496 | *dot++ = ' '; // replace NL with space
|
---|
3497 | file_modified++;
|
---|
3498 | while (isblank(*dot)) { // delete leading WS
|
---|
3499 | dot_delete();
|
---|
3500 | }
|
---|
3501 | }
|
---|
3502 | end_cmd_q(); // stop adding to q
|
---|
3503 | break;
|
---|
3504 | case 'L': // L- goto bottom line on screen
|
---|
3505 | dot = end_screen();
|
---|
3506 | if (cmdcnt > (rows - 1)) {
|
---|
3507 | cmdcnt = (rows - 1);
|
---|
3508 | }
|
---|
3509 | if (cmdcnt-- > 1) {
|
---|
3510 | do_cmd('-');
|
---|
3511 | } // repeat cnt
|
---|
3512 | dot_begin();
|
---|
3513 | dot_skip_over_ws();
|
---|
3514 | break;
|
---|
3515 | case 'M': // M- goto middle line on screen
|
---|
3516 | dot = screenbegin;
|
---|
3517 | for (cnt = 0; cnt < (rows-1) / 2; cnt++)
|
---|
3518 | dot = next_line(dot);
|
---|
3519 | break;
|
---|
3520 | case 'O': // O- open a empty line above
|
---|
3521 | // 0i\n ESC -i
|
---|
3522 | p = begin_line(dot);
|
---|
3523 | if (p[-1] == '\n') {
|
---|
3524 | dot_prev();
|
---|
3525 | case 'o': // o- open a empty line below; Yes, I know it is in the middle of the "if (..."
|
---|
3526 | dot_end();
|
---|
3527 | dot = char_insert(dot, '\n');
|
---|
3528 | } else {
|
---|
3529 | dot_begin(); // 0
|
---|
3530 | dot = char_insert(dot, '\n'); // i\n ESC
|
---|
3531 | dot_prev(); // -
|
---|
3532 | }
|
---|
3533 | goto dc_i;
|
---|
3534 | break;
|
---|
3535 | case 'R': // R- continuous Replace char
|
---|
3536 | dc5:
|
---|
3537 | cmd_mode = 2;
|
---|
3538 | break;
|
---|
3539 | case 'X': // X- delete char before dot
|
---|
3540 | case 'x': // x- delete the current char
|
---|
3541 | case 's': // s- substitute the current char
|
---|
3542 | if (cmdcnt-- > 1) {
|
---|
3543 | do_cmd(c);
|
---|
3544 | } // repeat cnt
|
---|
3545 | dir = 0;
|
---|
3546 | if (c == 'X')
|
---|
3547 | dir = -1;
|
---|
3548 | if (dot[dir] != '\n') {
|
---|
3549 | if (c == 'X')
|
---|
3550 | dot--; // delete prev char
|
---|
3551 | dot = yank_delete(dot, dot, 0, YANKDEL); // delete char
|
---|
3552 | }
|
---|
3553 | if (c == 's')
|
---|
3554 | goto dc_i; // start insrting
|
---|
3555 | end_cmd_q(); // stop adding to q
|
---|
3556 | break;
|
---|
3557 | case 'Z': // Z- if modified, {write}; exit
|
---|
3558 | // ZZ means to save file (if necessary), then exit
|
---|
3559 | c1 = get_one_char();
|
---|
3560 | if (c1 != 'Z') {
|
---|
3561 | indicate_error(c);
|
---|
3562 | break;
|
---|
3563 | }
|
---|
3564 | if (file_modified) {
|
---|
3565 | if (ENABLE_FEATURE_VI_READONLY && readonly_mode) {
|
---|
3566 | psbs("\"%s\" File is read only", current_filename);
|
---|
3567 | break;
|
---|
3568 | }
|
---|
3569 | cnt = file_write(current_filename, text, end - 1);
|
---|
3570 | if (cnt < 0) {
|
---|
3571 | if (cnt == -1)
|
---|
3572 | psbs("Write error: %s", strerror(errno));
|
---|
3573 | } else if (cnt == (end - 1 - text + 1)) {
|
---|
3574 | editing = 0;
|
---|
3575 | }
|
---|
3576 | } else {
|
---|
3577 | editing = 0;
|
---|
3578 | }
|
---|
3579 | break;
|
---|
3580 | case '^': // ^- move to first non-blank on line
|
---|
3581 | dot_begin();
|
---|
3582 | dot_skip_over_ws();
|
---|
3583 | break;
|
---|
3584 | case 'b': // b- back a word
|
---|
3585 | case 'e': // e- end of word
|
---|
3586 | if (cmdcnt-- > 1) {
|
---|
3587 | do_cmd(c);
|
---|
3588 | } // repeat cnt
|
---|
3589 | dir = FORWARD;
|
---|
3590 | if (c == 'b')
|
---|
3591 | dir = BACK;
|
---|
3592 | if ((dot + dir) < text || (dot + dir) > end - 1)
|
---|
3593 | break;
|
---|
3594 | dot += dir;
|
---|
3595 | if (isspace(*dot)) {
|
---|
3596 | dot = skip_thing(dot, (c == 'e') ? 2 : 1, dir, S_OVER_WS);
|
---|
3597 | }
|
---|
3598 | if (isalnum(*dot) || *dot == '_') {
|
---|
3599 | dot = skip_thing(dot, 1, dir, S_END_ALNUM);
|
---|
3600 | } else if (ispunct(*dot)) {
|
---|
3601 | dot = skip_thing(dot, 1, dir, S_END_PUNCT);
|
---|
3602 | }
|
---|
3603 | break;
|
---|
3604 | case 'c': // c- change something
|
---|
3605 | case 'd': // d- delete something
|
---|
3606 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
3607 | case 'y': // y- yank something
|
---|
3608 | case 'Y': // Y- Yank a line
|
---|
3609 | #endif
|
---|
3610 | yf = YANKDEL; // assume either "c" or "d"
|
---|
3611 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
3612 | if (c == 'y' || c == 'Y')
|
---|
3613 | yf = YANKONLY;
|
---|
3614 | #endif
|
---|
3615 | c1 = 'y';
|
---|
3616 | if (c != 'Y')
|
---|
3617 | c1 = get_one_char(); // get the type of thing to delete
|
---|
3618 | find_range(&p, &q, c1);
|
---|
3619 | if (c1 == 27) { // ESC- user changed mind and wants out
|
---|
3620 | c = c1 = 27; // Escape- do nothing
|
---|
3621 | } else if (strchr("wW", c1)) {
|
---|
3622 | if (c == 'c') {
|
---|
3623 | // don't include trailing WS as part of word
|
---|
3624 | while (isblank(*q)) {
|
---|
3625 | if (q <= text || q[-1] == '\n')
|
---|
3626 | break;
|
---|
3627 | q--;
|
---|
3628 | }
|
---|
3629 | }
|
---|
3630 | dot = yank_delete(p, q, 0, yf); // delete word
|
---|
3631 | } else if (strchr("^0bBeEft$", c1)) {
|
---|
3632 | // single line copy text into a register and delete
|
---|
3633 | dot = yank_delete(p, q, 0, yf); // delete word
|
---|
3634 | } else if (strchr("cdykjHL%+-{}\r\n", c1)) {
|
---|
3635 | // multiple line copy text into a register and delete
|
---|
3636 | dot = yank_delete(p, q, 1, yf); // delete lines
|
---|
3637 | if (c == 'c') {
|
---|
3638 | dot = char_insert(dot, '\n');
|
---|
3639 | // on the last line of file don't move to prev line
|
---|
3640 | if (dot != (end-1)) {
|
---|
3641 | dot_prev();
|
---|
3642 | }
|
---|
3643 | } else if (c == 'd') {
|
---|
3644 | dot_begin();
|
---|
3645 | dot_skip_over_ws();
|
---|
3646 | }
|
---|
3647 | } else {
|
---|
3648 | // could not recognize object
|
---|
3649 | c = c1 = 27; // error-
|
---|
3650 | indicate_error(c);
|
---|
3651 | }
|
---|
3652 | if (c1 != 27) {
|
---|
3653 | // if CHANGING, not deleting, start inserting after the delete
|
---|
3654 | if (c == 'c') {
|
---|
3655 | strcpy(buf, "Change");
|
---|
3656 | goto dc_i; // start inserting
|
---|
3657 | }
|
---|
3658 | if (c == 'd') {
|
---|
3659 | strcpy(buf, "Delete");
|
---|
3660 | }
|
---|
3661 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
3662 | if (c == 'y' || c == 'Y') {
|
---|
3663 | strcpy(buf, "Yank");
|
---|
3664 | }
|
---|
3665 | p = reg[YDreg];
|
---|
3666 | q = p + strlen(p);
|
---|
3667 | for (cnt = 0; p <= q; p++) {
|
---|
3668 | if (*p == '\n')
|
---|
3669 | cnt++;
|
---|
3670 | }
|
---|
3671 | psb("%s %d lines (%d chars) using [%c]",
|
---|
3672 | buf, cnt, strlen(reg[YDreg]), what_reg());
|
---|
3673 | #endif
|
---|
3674 | end_cmd_q(); // stop adding to q
|
---|
3675 | }
|
---|
3676 | break;
|
---|
3677 | case 'k': // k- goto prev line, same col
|
---|
3678 | case VI_K_UP: // cursor key Up
|
---|
3679 | if (cmdcnt-- > 1) {
|
---|
3680 | do_cmd(c);
|
---|
3681 | } // repeat cnt
|
---|
3682 | dot_prev();
|
---|
3683 | dot = move_to_col(dot, ccol + offset); // try stay in same col
|
---|
3684 | break;
|
---|
3685 | case 'r': // r- replace the current char with user input
|
---|
3686 | c1 = get_one_char(); // get the replacement char
|
---|
3687 | if (*dot != '\n') {
|
---|
3688 | *dot = c1;
|
---|
3689 | file_modified++; // has the file been modified
|
---|
3690 | }
|
---|
3691 | end_cmd_q(); // stop adding to q
|
---|
3692 | break;
|
---|
3693 | case 't': // t- move to char prior to next x
|
---|
3694 | last_forward_char = get_one_char();
|
---|
3695 | do_cmd(';');
|
---|
3696 | if (*dot == last_forward_char)
|
---|
3697 | dot_left();
|
---|
3698 | last_forward_char= 0;
|
---|
3699 | break;
|
---|
3700 | case 'w': // w- forward a word
|
---|
3701 | if (cmdcnt-- > 1) {
|
---|
3702 | do_cmd(c);
|
---|
3703 | } // repeat cnt
|
---|
3704 | if (isalnum(*dot) || *dot == '_') { // we are on ALNUM
|
---|
3705 | dot = skip_thing(dot, 1, FORWARD, S_END_ALNUM);
|
---|
3706 | } else if (ispunct(*dot)) { // we are on PUNCT
|
---|
3707 | dot = skip_thing(dot, 1, FORWARD, S_END_PUNCT);
|
---|
3708 | }
|
---|
3709 | if (dot < end - 1)
|
---|
3710 | dot++; // move over word
|
---|
3711 | if (isspace(*dot)) {
|
---|
3712 | dot = skip_thing(dot, 2, FORWARD, S_OVER_WS);
|
---|
3713 | }
|
---|
3714 | break;
|
---|
3715 | case 'z': // z-
|
---|
3716 | c1 = get_one_char(); // get the replacement char
|
---|
3717 | cnt = 0;
|
---|
3718 | if (c1 == '.')
|
---|
3719 | cnt = (rows - 2) / 2; // put dot at center
|
---|
3720 | if (c1 == '-')
|
---|
3721 | cnt = rows - 2; // put dot at bottom
|
---|
3722 | screenbegin = begin_line(dot); // start dot at top
|
---|
3723 | dot_scroll(cnt, -1);
|
---|
3724 | break;
|
---|
3725 | case '|': // |- move to column "cmdcnt"
|
---|
3726 | dot = move_to_col(dot, cmdcnt - 1); // try to move to column
|
---|
3727 | break;
|
---|
3728 | case '~': // ~- flip the case of letters a-z -> A-Z
|
---|
3729 | if (cmdcnt-- > 1) {
|
---|
3730 | do_cmd(c);
|
---|
3731 | } // repeat cnt
|
---|
3732 | if (islower(*dot)) {
|
---|
3733 | *dot = toupper(*dot);
|
---|
3734 | file_modified++; // has the file been modified
|
---|
3735 | } else if (isupper(*dot)) {
|
---|
3736 | *dot = tolower(*dot);
|
---|
3737 | file_modified++; // has the file been modified
|
---|
3738 | }
|
---|
3739 | dot_right();
|
---|
3740 | end_cmd_q(); // stop adding to q
|
---|
3741 | break;
|
---|
3742 | //----- The Cursor and Function Keys -----------------------------
|
---|
3743 | case VI_K_HOME: // Cursor Key Home
|
---|
3744 | dot_begin();
|
---|
3745 | break;
|
---|
3746 | // The Fn keys could point to do_macro which could translate them
|
---|
3747 | case VI_K_FUN1: // Function Key F1
|
---|
3748 | case VI_K_FUN2: // Function Key F2
|
---|
3749 | case VI_K_FUN3: // Function Key F3
|
---|
3750 | case VI_K_FUN4: // Function Key F4
|
---|
3751 | case VI_K_FUN5: // Function Key F5
|
---|
3752 | case VI_K_FUN6: // Function Key F6
|
---|
3753 | case VI_K_FUN7: // Function Key F7
|
---|
3754 | case VI_K_FUN8: // Function Key F8
|
---|
3755 | case VI_K_FUN9: // Function Key F9
|
---|
3756 | case VI_K_FUN10: // Function Key F10
|
---|
3757 | case VI_K_FUN11: // Function Key F11
|
---|
3758 | case VI_K_FUN12: // Function Key F12
|
---|
3759 | break;
|
---|
3760 | }
|
---|
3761 |
|
---|
3762 | dc1:
|
---|
3763 | // if text[] just became empty, add back an empty line
|
---|
3764 | if (end == text) {
|
---|
3765 | char_insert(text, '\n'); // start empty buf with dummy line
|
---|
3766 | dot = text;
|
---|
3767 | }
|
---|
3768 | // it is OK for dot to exactly equal to end, otherwise check dot validity
|
---|
3769 | if (dot != end) {
|
---|
3770 | dot = bound_dot(dot); // make sure "dot" is valid
|
---|
3771 | }
|
---|
3772 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
3773 | check_context(c); // update the current context
|
---|
3774 | #endif
|
---|
3775 |
|
---|
3776 | if (!isdigit(c))
|
---|
3777 | cmdcnt = 0; // cmd was not a number, reset cmdcnt
|
---|
3778 | cnt = dot - begin_line(dot);
|
---|
3779 | // Try to stay off of the Newline
|
---|
3780 | if (*dot == '\n' && cnt > 0 && cmd_mode == 0)
|
---|
3781 | dot--;
|
---|
3782 | }
|
---|
3783 |
|
---|
3784 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
3785 | static int totalcmds = 0;
|
---|
3786 | static int Mp = 85; // Movement command Probability
|
---|
3787 | static int Np = 90; // Non-movement command Probability
|
---|
3788 | static int Dp = 96; // Delete command Probability
|
---|
3789 | static int Ip = 97; // Insert command Probability
|
---|
3790 | static int Yp = 98; // Yank command Probability
|
---|
3791 | static int Pp = 99; // Put command Probability
|
---|
3792 | static int M = 0, N = 0, I = 0, D = 0, Y = 0, P = 0, U = 0;
|
---|
3793 | const char chars[20] = "\t012345 abcdABCD-=.$";
|
---|
3794 | const char *const words[20] = {
|
---|
3795 | "this", "is", "a", "test",
|
---|
3796 | "broadcast", "the", "emergency", "of",
|
---|
3797 | "system", "quick", "brown", "fox",
|
---|
3798 | "jumped", "over", "lazy", "dogs",
|
---|
3799 | "back", "January", "Febuary", "March"
|
---|
3800 | };
|
---|
3801 | const char *const lines[20] = {
|
---|
3802 | "You should have received a copy of the GNU General Public License\n",
|
---|
3803 | "char c, cm, *cmd, *cmd1;\n",
|
---|
3804 | "generate a command by percentages\n",
|
---|
3805 | "Numbers may be typed as a prefix to some commands.\n",
|
---|
3806 | "Quit, discarding changes!\n",
|
---|
3807 | "Forced write, if permission originally not valid.\n",
|
---|
3808 | "In general, any ex or ed command (such as substitute or delete).\n",
|
---|
3809 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
|
---|
3810 | "Please get w/ me and I will go over it with you.\n",
|
---|
3811 | "The following is a list of scheduled, committed changes.\n",
|
---|
3812 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
|
---|
3813 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
|
---|
3814 | "Any question about transactions please contact Sterling Huxley.\n",
|
---|
3815 | "I will try to get back to you by Friday, December 31.\n",
|
---|
3816 | "This Change will be implemented on Friday.\n",
|
---|
3817 | "Let me know if you have problems accessing this;\n",
|
---|
3818 | "Sterling Huxley recently added you to the access list.\n",
|
---|
3819 | "Would you like to go to lunch?\n",
|
---|
3820 | "The last command will be automatically run.\n",
|
---|
3821 | "This is too much english for a computer geek.\n",
|
---|
3822 | };
|
---|
3823 | char *multilines[20] = {
|
---|
3824 | "You should have received a copy of the GNU General Public License\n",
|
---|
3825 | "char c, cm, *cmd, *cmd1;\n",
|
---|
3826 | "generate a command by percentages\n",
|
---|
3827 | "Numbers may be typed as a prefix to some commands.\n",
|
---|
3828 | "Quit, discarding changes!\n",
|
---|
3829 | "Forced write, if permission originally not valid.\n",
|
---|
3830 | "In general, any ex or ed command (such as substitute or delete).\n",
|
---|
3831 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
|
---|
3832 | "Please get w/ me and I will go over it with you.\n",
|
---|
3833 | "The following is a list of scheduled, committed changes.\n",
|
---|
3834 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
|
---|
3835 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
|
---|
3836 | "Any question about transactions please contact Sterling Huxley.\n",
|
---|
3837 | "I will try to get back to you by Friday, December 31.\n",
|
---|
3838 | "This Change will be implemented on Friday.\n",
|
---|
3839 | "Let me know if you have problems accessing this;\n",
|
---|
3840 | "Sterling Huxley recently added you to the access list.\n",
|
---|
3841 | "Would you like to go to lunch?\n",
|
---|
3842 | "The last command will be automatically run.\n",
|
---|
3843 | "This is too much english for a computer geek.\n",
|
---|
3844 | };
|
---|
3845 |
|
---|
3846 | // create a random command to execute
|
---|
3847 | static void crash_dummy()
|
---|
3848 | {
|
---|
3849 | static int sleeptime; // how long to pause between commands
|
---|
3850 | char c, cm, *cmd, *cmd1;
|
---|
3851 | int i, cnt, thing, rbi, startrbi, percent;
|
---|
3852 |
|
---|
3853 | // "dot" movement commands
|
---|
3854 | cmd1 = " \n\r\002\004\005\006\025\0310^$-+wWeEbBhjklHL";
|
---|
3855 |
|
---|
3856 | // is there already a command running?
|
---|
3857 | if (readed_for_parse > 0)
|
---|
3858 | goto cd1;
|
---|
3859 | cd0:
|
---|
3860 | startrbi = rbi = 0;
|
---|
3861 | sleeptime = 0; // how long to pause between commands
|
---|
3862 | memset(readbuffer, '\0', MAX_LINELEN); // clear the read buffer
|
---|
3863 | // generate a command by percentages
|
---|
3864 | percent = (int) lrand48() % 100; // get a number from 0-99
|
---|
3865 | if (percent < Mp) { // Movement commands
|
---|
3866 | // available commands
|
---|
3867 | cmd = cmd1;
|
---|
3868 | M++;
|
---|
3869 | } else if (percent < Np) { // non-movement commands
|
---|
3870 | cmd = "mz<>\'\""; // available commands
|
---|
3871 | N++;
|
---|
3872 | } else if (percent < Dp) { // Delete commands
|
---|
3873 | cmd = "dx"; // available commands
|
---|
3874 | D++;
|
---|
3875 | } else if (percent < Ip) { // Inset commands
|
---|
3876 | cmd = "iIaAsrJ"; // available commands
|
---|
3877 | I++;
|
---|
3878 | } else if (percent < Yp) { // Yank commands
|
---|
3879 | cmd = "yY"; // available commands
|
---|
3880 | Y++;
|
---|
3881 | } else if (percent < Pp) { // Put commands
|
---|
3882 | cmd = "pP"; // available commands
|
---|
3883 | P++;
|
---|
3884 | } else {
|
---|
3885 | // We do not know how to handle this command, try again
|
---|
3886 | U++;
|
---|
3887 | goto cd0;
|
---|
3888 | }
|
---|
3889 | // randomly pick one of the available cmds from "cmd[]"
|
---|
3890 | i = (int) lrand48() % strlen(cmd);
|
---|
3891 | cm = cmd[i];
|
---|
3892 | if (strchr(":\024", cm))
|
---|
3893 | goto cd0; // dont allow colon or ctrl-T commands
|
---|
3894 | readbuffer[rbi++] = cm; // put cmd into input buffer
|
---|
3895 |
|
---|
3896 | // now we have the command-
|
---|
3897 | // there are 1, 2, and multi char commands
|
---|
3898 | // find out which and generate the rest of command as necessary
|
---|
3899 | if (strchr("dmryz<>\'\"", cm)) { // 2-char commands
|
---|
3900 | cmd1 = " \n\r0$^-+wWeEbBhjklHL";
|
---|
3901 | if (cm == 'm' || cm == '\'' || cm == '\"') { // pick a reg[]
|
---|
3902 | cmd1 = "abcdefghijklmnopqrstuvwxyz";
|
---|
3903 | }
|
---|
3904 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command
|
---|
3905 | c = cmd1[thing];
|
---|
3906 | readbuffer[rbi++] = c; // add movement to input buffer
|
---|
3907 | }
|
---|
3908 | if (strchr("iIaAsc", cm)) { // multi-char commands
|
---|
3909 | if (cm == 'c') {
|
---|
3910 | // change some thing
|
---|
3911 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command
|
---|
3912 | c = cmd1[thing];
|
---|
3913 | readbuffer[rbi++] = c; // add movement to input buffer
|
---|
3914 | }
|
---|
3915 | thing = (int) lrand48() % 4; // what thing to insert
|
---|
3916 | cnt = (int) lrand48() % 10; // how many to insert
|
---|
3917 | for (i = 0; i < cnt; i++) {
|
---|
3918 | if (thing == 0) { // insert chars
|
---|
3919 | readbuffer[rbi++] = chars[((int) lrand48() % strlen(chars))];
|
---|
3920 | } else if (thing == 1) { // insert words
|
---|
3921 | strcat(readbuffer, words[(int) lrand48() % 20]);
|
---|
3922 | strcat(readbuffer, " ");
|
---|
3923 | sleeptime = 0; // how fast to type
|
---|
3924 | } else if (thing == 2) { // insert lines
|
---|
3925 | strcat(readbuffer, lines[(int) lrand48() % 20]);
|
---|
3926 | sleeptime = 0; // how fast to type
|
---|
3927 | } else { // insert multi-lines
|
---|
3928 | strcat(readbuffer, multilines[(int) lrand48() % 20]);
|
---|
3929 | sleeptime = 0; // how fast to type
|
---|
3930 | }
|
---|
3931 | }
|
---|
3932 | strcat(readbuffer, "\033");
|
---|
3933 | }
|
---|
3934 | readed_for_parse = strlen(readbuffer);
|
---|
3935 | cd1:
|
---|
3936 | totalcmds++;
|
---|
3937 | if (sleeptime > 0)
|
---|
3938 | mysleep(sleeptime); // sleep 1/100 sec
|
---|
3939 | }
|
---|
3940 |
|
---|
3941 | // test to see if there are any errors
|
---|
3942 | static void crash_test()
|
---|
3943 | {
|
---|
3944 | static time_t oldtim;
|
---|
3945 |
|
---|
3946 | time_t tim;
|
---|
3947 | char d[2], msg[MAX_LINELEN];
|
---|
3948 |
|
---|
3949 | msg[0] = '\0';
|
---|
3950 | if (end < text) {
|
---|
3951 | strcat(msg, "end<text ");
|
---|
3952 | }
|
---|
3953 | if (end > textend) {
|
---|
3954 | strcat(msg, "end>textend ");
|
---|
3955 | }
|
---|
3956 | if (dot < text) {
|
---|
3957 | strcat(msg, "dot<text ");
|
---|
3958 | }
|
---|
3959 | if (dot > end) {
|
---|
3960 | strcat(msg, "dot>end ");
|
---|
3961 | }
|
---|
3962 | if (screenbegin < text) {
|
---|
3963 | strcat(msg, "screenbegin<text ");
|
---|
3964 | }
|
---|
3965 | if (screenbegin > end - 1) {
|
---|
3966 | strcat(msg, "screenbegin>end-1 ");
|
---|
3967 | }
|
---|
3968 |
|
---|
3969 | if (msg[0]) {
|
---|
3970 | alarm(0);
|
---|
3971 | printf("\n\n%d: \'%c\' %s\n\n\n%s[Hit return to continue]%s",
|
---|
3972 | totalcmds, last_input_char, msg, SOs, SOn);
|
---|
3973 | fflush(stdout);
|
---|
3974 | while (read(0, d, 1) > 0) {
|
---|
3975 | if (d[0] == '\n' || d[0] == '\r')
|
---|
3976 | break;
|
---|
3977 | }
|
---|
3978 | alarm(3);
|
---|
3979 | }
|
---|
3980 | tim = (time_t) time((time_t *) 0);
|
---|
3981 | if (tim >= (oldtim + 3)) {
|
---|
3982 | sprintf(status_buffer,
|
---|
3983 | "Tot=%d: M=%d N=%d I=%d D=%d Y=%d P=%d U=%d size=%d",
|
---|
3984 | totalcmds, M, N, I, D, Y, P, U, end - text + 1);
|
---|
3985 | oldtim = tim;
|
---|
3986 | }
|
---|
3987 | }
|
---|
3988 | #endif
|
---|