[821] | 1 | /* vi: set sw=4 ts=4: */
|
---|
| 2 | /*
|
---|
| 3 | * tiny vi.c: A small 'vi' clone
|
---|
| 4 | * Copyright (C) 2000, 2001 Sterling Huxley <sterling@europa.com>
|
---|
| 5 | *
|
---|
| 6 | * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
|
---|
| 7 | */
|
---|
| 8 |
|
---|
| 9 | /*
|
---|
| 10 | * Things To Do:
|
---|
| 11 | * EXINIT
|
---|
| 12 | * $HOME/.exrc and ./.exrc
|
---|
| 13 | * add magic to search /foo.*bar
|
---|
| 14 | * add :help command
|
---|
| 15 | * :map macros
|
---|
| 16 | * if mark[] values were line numbers rather than pointers
|
---|
| 17 | * it would be easier to change the mark when add/delete lines
|
---|
| 18 | * More intelligence in refresh()
|
---|
| 19 | * ":r !cmd" and "!cmd" to filter text through an external command
|
---|
| 20 | * A true "undo" facility
|
---|
| 21 | * An "ex" line oriented mode- maybe using "cmdedit"
|
---|
| 22 | */
|
---|
| 23 |
|
---|
[1765] | 24 | #include "libbb.h"
|
---|
[821] | 25 |
|
---|
[1765] | 26 | #define ENABLE_FEATURE_VI_CRASHME 0
|
---|
[821] | 27 |
|
---|
[1765] | 28 | #if ENABLE_LOCALE_SUPPORT
|
---|
[821] | 29 | #define Isprint(c) isprint((c))
|
---|
| 30 | #else
|
---|
[1765] | 31 | /* 0x9b is Meta-ESC */
|
---|
| 32 | #define Isprint(c) ((unsigned char)(c) >= ' ' && (c) != 0x7f && (unsigned char)(c) != 0x9b)
|
---|
[821] | 33 | #endif
|
---|
| 34 |
|
---|
[1765] | 35 | enum {
|
---|
| 36 | MAX_LINELEN = CONFIG_FEATURE_VI_MAX_LEN,
|
---|
| 37 | MAX_SCR_COLS = CONFIG_FEATURE_VI_MAX_LEN,
|
---|
| 38 | };
|
---|
[821] | 39 |
|
---|
| 40 | // Misc. non-Ascii keys that report an escape sequence
|
---|
[1765] | 41 | #define VI_K_UP (char)128 // cursor key Up
|
---|
| 42 | #define VI_K_DOWN (char)129 // cursor key Down
|
---|
| 43 | #define VI_K_RIGHT (char)130 // Cursor Key Right
|
---|
| 44 | #define VI_K_LEFT (char)131 // cursor key Left
|
---|
| 45 | #define VI_K_HOME (char)132 // Cursor Key Home
|
---|
| 46 | #define VI_K_END (char)133 // Cursor Key End
|
---|
| 47 | #define VI_K_INSERT (char)134 // Cursor Key Insert
|
---|
| 48 | #define VI_K_PAGEUP (char)135 // Cursor Key Page Up
|
---|
| 49 | #define VI_K_PAGEDOWN (char)136 // Cursor Key Page Down
|
---|
| 50 | #define VI_K_FUN1 (char)137 // Function Key F1
|
---|
| 51 | #define VI_K_FUN2 (char)138 // Function Key F2
|
---|
| 52 | #define VI_K_FUN3 (char)139 // Function Key F3
|
---|
| 53 | #define VI_K_FUN4 (char)140 // Function Key F4
|
---|
| 54 | #define VI_K_FUN5 (char)141 // Function Key F5
|
---|
| 55 | #define VI_K_FUN6 (char)142 // Function Key F6
|
---|
| 56 | #define VI_K_FUN7 (char)143 // Function Key F7
|
---|
| 57 | #define VI_K_FUN8 (char)144 // Function Key F8
|
---|
| 58 | #define VI_K_FUN9 (char)145 // Function Key F9
|
---|
| 59 | #define VI_K_FUN10 (char)146 // Function Key F10
|
---|
| 60 | #define VI_K_FUN11 (char)147 // Function Key F11
|
---|
| 61 | #define VI_K_FUN12 (char)148 // Function Key F12
|
---|
[821] | 62 |
|
---|
| 63 | /* vt102 typical ESC sequence */
|
---|
| 64 | /* terminal standout start/normal ESC sequence */
|
---|
[1765] | 65 | static const char SOs[] ALIGN1 = "\033[7m";
|
---|
| 66 | static const char SOn[] ALIGN1 = "\033[0m";
|
---|
[821] | 67 | /* terminal bell sequence */
|
---|
[1765] | 68 | static const char bell[] ALIGN1 = "\007";
|
---|
[821] | 69 | /* Clear-end-of-line and Clear-end-of-screen ESC sequence */
|
---|
[1765] | 70 | static const char Ceol[] ALIGN1 = "\033[0K";
|
---|
| 71 | static const char Ceos[] ALIGN1 = "\033[0J";
|
---|
[821] | 72 | /* Cursor motion arbitrary destination ESC sequence */
|
---|
[1765] | 73 | static const char CMrc[] ALIGN1 = "\033[%d;%dH";
|
---|
[821] | 74 | /* Cursor motion up and down ESC sequence */
|
---|
[1765] | 75 | static const char CMup[] ALIGN1 = "\033[A";
|
---|
| 76 | static const char CMdown[] ALIGN1 = "\n";
|
---|
[821] | 77 |
|
---|
| 78 |
|
---|
| 79 | enum {
|
---|
| 80 | YANKONLY = FALSE,
|
---|
| 81 | YANKDEL = TRUE,
|
---|
| 82 | FORWARD = 1, // code depends on "1" for array index
|
---|
| 83 | BACK = -1, // code depends on "-1" for array index
|
---|
| 84 | LIMITED = 0, // how much of text[] in char_search
|
---|
| 85 | FULL = 1, // how much of text[] in char_search
|
---|
| 86 |
|
---|
| 87 | S_BEFORE_WS = 1, // used in skip_thing() for moving "dot"
|
---|
| 88 | S_TO_WS = 2, // used in skip_thing() for moving "dot"
|
---|
| 89 | S_OVER_WS = 3, // used in skip_thing() for moving "dot"
|
---|
| 90 | S_END_PUNCT = 4, // used in skip_thing() for moving "dot"
|
---|
[1765] | 91 | S_END_ALNUM = 5, // used in skip_thing() for moving "dot"
|
---|
[821] | 92 | };
|
---|
| 93 |
|
---|
[1765] | 94 | /* vi.c expects chars to be unsigned. */
|
---|
| 95 | /* busybox build system provides that, but it's better */
|
---|
| 96 | /* to audit and fix the source */
|
---|
[821] | 97 |
|
---|
[1765] | 98 | static smallint vi_setops;
|
---|
[821] | 99 | #define VI_AUTOINDENT 1
|
---|
| 100 | #define VI_SHOWMATCH 2
|
---|
| 101 | #define VI_IGNORECASE 4
|
---|
| 102 | #define VI_ERR_METHOD 8
|
---|
| 103 | #define autoindent (vi_setops & VI_AUTOINDENT)
|
---|
| 104 | #define showmatch (vi_setops & VI_SHOWMATCH )
|
---|
| 105 | #define ignorecase (vi_setops & VI_IGNORECASE)
|
---|
| 106 | /* indicate error with beep or flash */
|
---|
| 107 | #define err_method (vi_setops & VI_ERR_METHOD)
|
---|
| 108 |
|
---|
| 109 |
|
---|
[1765] | 110 | static smallint editing; // >0 while we are editing a file
|
---|
| 111 | // [code audit says "can be 0 or 1 only"]
|
---|
| 112 | static smallint cmd_mode; // 0=command 1=insert 2=replace
|
---|
| 113 | static smallint file_modified; // buffer contents changed
|
---|
| 114 | static smallint last_file_modified = -1;
|
---|
| 115 | static int fn_start; // index of first cmd line file name
|
---|
| 116 | static int save_argc; // how many file names on cmd line
|
---|
| 117 | static int cmdcnt; // repetition count
|
---|
| 118 | static int rows, columns; // the terminal screen is this size
|
---|
| 119 | static int crow, ccol, offset; // cursor is on Crow x Ccol with Horz Ofset
|
---|
| 120 | static char *status_buffer; // mesages to the user
|
---|
[821] | 121 | #define STATUS_BUFFER_LEN 200
|
---|
| 122 | static int have_status_msg; // is default edit status needed?
|
---|
[1765] | 123 | // [don't make smallint!]
|
---|
[821] | 124 | static int last_status_cksum; // hash of current status line
|
---|
[1765] | 125 | static char *current_filename; // current file name
|
---|
| 126 | //static char *text, *end; // pointers to the user data in memory
|
---|
| 127 | static char *screen; // pointer to the virtual screen buffer
|
---|
| 128 | static int screensize; // and its size
|
---|
| 129 | static char *screenbegin; // index into text[], of top line on the screen
|
---|
| 130 | //static char *dot; // where all the action takes place
|
---|
[821] | 131 | static int tabstop;
|
---|
[1765] | 132 | static char erase_char; // the users erase character
|
---|
| 133 | static char last_input_char; // last char read from user
|
---|
| 134 | static char last_forward_char; // last char searched for with 'f'
|
---|
[821] | 135 |
|
---|
[1765] | 136 | #if ENABLE_FEATURE_VI_READONLY
|
---|
| 137 | //static smallint vi_readonly, readonly;
|
---|
| 138 | static smallint readonly_mode = 0;
|
---|
| 139 | #define SET_READONLY_FILE(flags) ((flags) |= 0x01)
|
---|
| 140 | #define SET_READONLY_MODE(flags) ((flags) |= 0x02)
|
---|
| 141 | #define UNSET_READONLY_FILE(flags) ((flags) &= 0xfe)
|
---|
| 142 | #else
|
---|
| 143 | #define readonly_mode 0
|
---|
| 144 | #define SET_READONLY_FILE(flags)
|
---|
| 145 | #define SET_READONLY_MODE(flags)
|
---|
| 146 | #define UNSET_READONLY_FILE(flags)
|
---|
| 147 | #endif
|
---|
| 148 |
|
---|
| 149 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
| 150 | static smallint adding2q; // are we currently adding user input to q
|
---|
| 151 | static char *last_modifying_cmd; // last modifying cmd for "."
|
---|
| 152 | static char *ioq, *ioq_start; // pointer to string for get_one_char to "read"
|
---|
| 153 | #endif
|
---|
| 154 | #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
[821] | 155 | static int last_row; // where the cursor was last moved to
|
---|
[1765] | 156 | #endif
|
---|
| 157 | #if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
|
---|
[821] | 158 | static int my_pid;
|
---|
| 159 | #endif
|
---|
[1765] | 160 | #if ENABLE_FEATURE_VI_DOT_CMD || ENABLE_FEATURE_VI_YANKMARK
|
---|
| 161 | static char *modifying_cmds; // cmds that modify text[]
|
---|
| 162 | #endif
|
---|
| 163 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
| 164 | static char *last_search_pattern; // last pattern from a '/' or '?' search
|
---|
| 165 | #endif
|
---|
[821] | 166 |
|
---|
[1765] | 167 | /* Moving biggest data to malloced space... */
|
---|
| 168 | struct globals {
|
---|
| 169 | /* many references - keep near the top of globals */
|
---|
| 170 | char *text, *end; // pointers to the user data in memory
|
---|
| 171 | int text_size; // size of the allocated buffer
|
---|
| 172 | char *dot; // where all the action takes place
|
---|
| 173 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
| 174 | char *reg[28]; // named register a-z, "D", and "U" 0-25,26,27
|
---|
| 175 | int YDreg, Ureg; // default delete register and orig line for "U"
|
---|
| 176 | char *mark[28]; // user marks points somewhere in text[]- a-z and previous context ''
|
---|
| 177 | char *context_start, *context_end;
|
---|
| 178 | #endif
|
---|
| 179 | /* a few references only */
|
---|
| 180 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
| 181 | jmp_buf restart; // catch_sig()
|
---|
| 182 | #endif
|
---|
| 183 | struct termios term_orig, term_vi; // remember what the cooked mode was
|
---|
| 184 | #if ENABLE_FEATURE_VI_COLON
|
---|
| 185 | char *initial_cmds[3]; // currently 2 entries, NULL terminated
|
---|
| 186 | #endif
|
---|
| 187 | };
|
---|
| 188 | #define G (*ptr_to_globals)
|
---|
| 189 | #define text (G.text )
|
---|
| 190 | #define text_size (G.text_size )
|
---|
| 191 | #define end (G.end )
|
---|
| 192 | #define dot (G.dot )
|
---|
| 193 | #define reg (G.reg )
|
---|
| 194 | #define YDreg (G.YDreg )
|
---|
| 195 | #define Ureg (G.Ureg )
|
---|
| 196 | #define mark (G.mark )
|
---|
| 197 | #define context_start (G.context_start )
|
---|
| 198 | #define context_end (G.context_end )
|
---|
| 199 | #define restart (G.restart )
|
---|
| 200 | #define term_orig (G.term_orig )
|
---|
| 201 | #define term_vi (G.term_vi )
|
---|
| 202 | #define initial_cmds (G.initial_cmds )
|
---|
[821] | 203 |
|
---|
[1765] | 204 | static int init_text_buffer(char *); // init from file or create new
|
---|
| 205 | static void edit_file(char *); // edit one file
|
---|
| 206 | static void do_cmd(char); // execute a command
|
---|
| 207 | static int next_tabstop(int);
|
---|
| 208 | static void sync_cursor(char *, int *, int *); // synchronize the screen cursor to dot
|
---|
| 209 | static char *begin_line(char *); // return pointer to cur line B-o-l
|
---|
| 210 | static char *end_line(char *); // return pointer to cur line E-o-l
|
---|
| 211 | static char *prev_line(char *); // return pointer to prev line B-o-l
|
---|
| 212 | static char *next_line(char *); // return pointer to next line B-o-l
|
---|
| 213 | static char *end_screen(void); // get pointer to last char on screen
|
---|
| 214 | static int count_lines(char *, char *); // count line from start to stop
|
---|
| 215 | static char *find_line(int); // find begining of line #li
|
---|
| 216 | static char *move_to_col(char *, int); // move "p" to column l
|
---|
[821] | 217 | static void dot_left(void); // move dot left- dont leave line
|
---|
| 218 | static void dot_right(void); // move dot right- dont leave line
|
---|
| 219 | static void dot_begin(void); // move dot to B-o-l
|
---|
| 220 | static void dot_end(void); // move dot to E-o-l
|
---|
| 221 | static void dot_next(void); // move dot to next line B-o-l
|
---|
| 222 | static void dot_prev(void); // move dot to prev line B-o-l
|
---|
| 223 | static void dot_scroll(int, int); // move the screen up or down
|
---|
| 224 | static void dot_skip_over_ws(void); // move dot pat WS
|
---|
| 225 | static void dot_delete(void); // delete the char at 'dot'
|
---|
[1765] | 226 | static char *bound_dot(char *); // make sure text[0] <= P < "end"
|
---|
| 227 | static char *new_screen(int, int); // malloc virtual screen memory
|
---|
| 228 | static char *char_insert(char *, char); // insert the char c at 'p'
|
---|
| 229 | static char *stupid_insert(char *, char); // stupidly insert the char c at 'p'
|
---|
| 230 | static char find_range(char **, char **, char); // return pointers for an object
|
---|
| 231 | static int st_test(char *, int, int, char *); // helper for skip_thing()
|
---|
| 232 | static char *skip_thing(char *, int, int, int); // skip some object
|
---|
| 233 | static char *find_pair(char *, char); // find matching pair () [] {}
|
---|
| 234 | static char *text_hole_delete(char *, char *); // at "p", delete a 'size' byte hole
|
---|
| 235 | static char *text_hole_make(char *, int); // at "p", make a 'size' byte hole
|
---|
| 236 | static char *yank_delete(char *, char *, int, int); // yank text[] into register then delete
|
---|
[821] | 237 | static void show_help(void); // display some help info
|
---|
| 238 | static void rawmode(void); // set "raw" mode on tty
|
---|
| 239 | static void cookmode(void); // return to "cooked" mode on tty
|
---|
| 240 | static int mysleep(int); // sleep for 'h' 1/100 seconds
|
---|
[1765] | 241 | static char readit(void); // read (maybe cursor) key from stdin
|
---|
| 242 | static char get_one_char(void); // read 1 char from stdin
|
---|
| 243 | static int file_size(const char *); // what is the byte size of "fn"
|
---|
| 244 | #if ENABLE_FEATURE_VI_READONLY
|
---|
| 245 | static int file_insert(const char *, char *, int);
|
---|
| 246 | #else
|
---|
| 247 | static int file_insert(const char *, char *);
|
---|
| 248 | #endif
|
---|
| 249 | static int file_write(char *, char *, char *);
|
---|
[821] | 250 | static void place_cursor(int, int, int);
|
---|
| 251 | static void screen_erase(void);
|
---|
| 252 | static void clear_to_eol(void);
|
---|
| 253 | static void clear_to_eos(void);
|
---|
| 254 | static void standout_start(void); // send "start reverse video" sequence
|
---|
| 255 | static void standout_end(void); // send "end reverse video" sequence
|
---|
| 256 | static void flash(int); // flash the terminal screen
|
---|
| 257 | static void show_status_line(void); // put a message on the bottom line
|
---|
| 258 | static void psb(const char *, ...); // Print Status Buf
|
---|
| 259 | static void psbs(const char *, ...); // Print Status Buf in standout mode
|
---|
[1765] | 260 | static void ni(const char *); // display messages
|
---|
[821] | 261 | static int format_edit_status(void); // format file status on status line
|
---|
| 262 | static void redraw(int); // force a full screen refresh
|
---|
[1765] | 263 | static void format_line(char*, char*, int);
|
---|
[821] | 264 | static void refresh(int); // update the terminal from screen[]
|
---|
| 265 |
|
---|
| 266 | static void Indicate_Error(void); // use flash or beep to indicate error
|
---|
| 267 | #define indicate_error(c) Indicate_Error()
|
---|
| 268 | static void Hit_Return(void);
|
---|
| 269 |
|
---|
[1765] | 270 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
| 271 | static char *char_search(char *, const char *, int, int); // search for pattern starting at p
|
---|
| 272 | static int mycmp(const char *, const char *, int); // string cmp based in "ignorecase"
|
---|
| 273 | #endif
|
---|
| 274 | #if ENABLE_FEATURE_VI_COLON
|
---|
| 275 | static char *get_one_address(char *, int *); // get colon addr, if present
|
---|
| 276 | static char *get_address(char *, int *, int *); // get two colon addrs, if present
|
---|
| 277 | static void colon(char *); // execute the "colon" mode cmds
|
---|
| 278 | #endif
|
---|
| 279 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
[821] | 280 | static void winch_sig(int); // catch window size changes
|
---|
| 281 | static void suspend_sig(int); // catch ctrl-Z
|
---|
| 282 | static void catch_sig(int); // catch ctrl-C and alarm time-outs
|
---|
[1765] | 283 | #endif
|
---|
| 284 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
| 285 | static void start_new_cmd_q(char); // new queue for command
|
---|
[821] | 286 | static void end_cmd_q(void); // stop saving input chars
|
---|
[1765] | 287 | #else
|
---|
| 288 | #define end_cmd_q() ((void)0)
|
---|
| 289 | #endif
|
---|
| 290 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
| 291 | static void showmatching(char *); // show the matching pair () [] {}
|
---|
| 292 | #endif
|
---|
| 293 | #if ENABLE_FEATURE_VI_YANKMARK || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) || ENABLE_FEATURE_VI_CRASHME
|
---|
| 294 | static char *string_insert(char *, char *); // insert the string at 'p'
|
---|
| 295 | #endif
|
---|
| 296 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
| 297 | static char *text_yank(char *, char *, int); // save copy of "p" into a register
|
---|
| 298 | static char what_reg(void); // what is letter of current YDreg
|
---|
| 299 | static void check_context(char); // remember context for '' command
|
---|
| 300 | #endif
|
---|
| 301 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
[821] | 302 | static void crash_dummy();
|
---|
| 303 | static void crash_test();
|
---|
| 304 | static int crashme = 0;
|
---|
[1765] | 305 | #endif
|
---|
[821] | 306 |
|
---|
| 307 |
|
---|
| 308 | static void write1(const char *out)
|
---|
| 309 | {
|
---|
| 310 | fputs(out, stdout);
|
---|
| 311 | }
|
---|
| 312 |
|
---|
[1765] | 313 | int vi_main(int argc, char **argv);
|
---|
[821] | 314 | int vi_main(int argc, char **argv)
|
---|
| 315 | {
|
---|
| 316 | int c;
|
---|
| 317 | RESERVE_CONFIG_BUFFER(STATUS_BUFFER, STATUS_BUFFER_LEN);
|
---|
| 318 |
|
---|
[1765] | 319 | #if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
|
---|
[821] | 320 | my_pid = getpid();
|
---|
| 321 | #endif
|
---|
| 322 |
|
---|
[1765] | 323 | PTR_TO_GLOBALS = xzalloc(sizeof(G));
|
---|
| 324 |
|
---|
| 325 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
| 326 | srand((long) my_pid);
|
---|
| 327 | #endif
|
---|
| 328 |
|
---|
| 329 | status_buffer = STATUS_BUFFER;
|
---|
[821] | 330 | last_status_cksum = 0;
|
---|
[1765] | 331 | text = NULL;
|
---|
[821] | 332 |
|
---|
[1765] | 333 | #ifdef NO_SUCH_APPLET_YET
|
---|
| 334 | /* If we aren't "vi", we are "view" */
|
---|
| 335 | if (ENABLE_FEATURE_VI_READONLY && applet_name[2]) {
|
---|
| 336 | SET_READONLY_MODE(readonly_mode);
|
---|
[821] | 337 | }
|
---|
[1765] | 338 | #endif
|
---|
| 339 |
|
---|
[821] | 340 | vi_setops = VI_AUTOINDENT | VI_SHOWMATCH | VI_IGNORECASE | VI_ERR_METHOD;
|
---|
[1765] | 341 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
| 342 | memset(reg, 0, sizeof(reg)); // init the yank regs
|
---|
| 343 | #endif
|
---|
| 344 | #if ENABLE_FEATURE_VI_DOT_CMD || ENABLE_FEATURE_VI_YANKMARK
|
---|
| 345 | modifying_cmds = (char *) "aAcCdDiIJoOpPrRsxX<>~"; // cmds modifying text[]
|
---|
| 346 | #endif
|
---|
[821] | 347 |
|
---|
[1765] | 348 | // 1- process $HOME/.exrc file (not inplemented yet)
|
---|
[821] | 349 | // 2- process EXINIT variable from environment
|
---|
| 350 | // 3- process command line args
|
---|
[1765] | 351 | #if ENABLE_FEATURE_VI_COLON
|
---|
| 352 | {
|
---|
| 353 | char *p = getenv("EXINIT");
|
---|
| 354 | if (p && *p)
|
---|
| 355 | initial_cmds[0] = xstrdup(p);
|
---|
| 356 | }
|
---|
| 357 | #endif
|
---|
| 358 | while ((c = getopt(argc, argv, "hCR" USE_FEATURE_VI_COLON("c:"))) != -1) {
|
---|
[821] | 359 | switch (c) {
|
---|
[1765] | 360 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
[821] | 361 | case 'C':
|
---|
| 362 | crashme = 1;
|
---|
| 363 | break;
|
---|
[1765] | 364 | #endif
|
---|
| 365 | #if ENABLE_FEATURE_VI_READONLY
|
---|
[821] | 366 | case 'R': // Read-only flag
|
---|
[1765] | 367 | SET_READONLY_MODE(readonly_mode);
|
---|
[821] | 368 | break;
|
---|
[1765] | 369 | #endif
|
---|
[821] | 370 | //case 'r': // recover flag- ignore- we don't use tmp file
|
---|
| 371 | //case 'x': // encryption flag- ignore
|
---|
| 372 | //case 'c': // execute command first
|
---|
[1765] | 373 | #if ENABLE_FEATURE_VI_COLON
|
---|
| 374 | case 'c': // cmd line vi command
|
---|
| 375 | if (*optarg)
|
---|
| 376 | initial_cmds[initial_cmds[0] != 0] = xstrdup(optarg);
|
---|
| 377 | break;
|
---|
[821] | 378 | //case 'h': // help -- just use default
|
---|
[1765] | 379 | #endif
|
---|
[821] | 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++) {
|
---|
[1765] | 396 | edit_file(argv[optind]);
|
---|
[821] | 397 | }
|
---|
| 398 | }
|
---|
| 399 | //-----------------------------------------------------------
|
---|
| 400 |
|
---|
[1765] | 401 | return 0;
|
---|
[821] | 402 | }
|
---|
| 403 |
|
---|
[1765] | 404 | /* read text from file or create an empty buf */
|
---|
| 405 | /* will also update current_filename */
|
---|
| 406 | static int init_text_buffer(char *fn)
|
---|
[821] | 407 | {
|
---|
[1765] | 408 | int rc;
|
---|
| 409 | int size = file_size(fn); // file size. -1 means does not exist.
|
---|
[821] | 410 |
|
---|
[1765] | 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
|
---|
[821] | 445 | int sig;
|
---|
[1765] | 446 | #endif
|
---|
| 447 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
| 448 | static char *cur_line;
|
---|
| 449 | #endif
|
---|
[821] | 450 |
|
---|
[1765] | 451 | editing = 1; // 0= exit, 1= one file, 2= multiple files
|
---|
[821] | 452 | rawmode();
|
---|
| 453 | rows = 24;
|
---|
| 454 | columns = 80;
|
---|
[1765] | 455 | size = 0;
|
---|
[821] | 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
|
---|
[1765] | 459 | init_text_buffer(fn);
|
---|
[821] | 460 |
|
---|
[1765] | 461 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
[821] | 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"
|
---|
[1765] | 465 | #endif
|
---|
[821] | 466 |
|
---|
| 467 | last_forward_char = last_input_char = '\0';
|
---|
| 468 | crow = 0;
|
---|
| 469 | ccol = 0;
|
---|
| 470 |
|
---|
[1765] | 471 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
[821] | 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 | }
|
---|
[1765] | 479 | #endif
|
---|
[821] | 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';
|
---|
[1765] | 486 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
[821] | 487 | free(last_modifying_cmd);
|
---|
| 488 | free(ioq_start);
|
---|
[1765] | 489 | ioq = ioq_start = last_modifying_cmd = NULL;
|
---|
[821] | 490 | adding2q = 0;
|
---|
[1765] | 491 | #endif
|
---|
[821] | 492 | redraw(FALSE); // dont force every col re-draw
|
---|
| 493 |
|
---|
[1765] | 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
|
---|
[821] | 515 | //------This is the main Vi cmd handling loop -----------------------
|
---|
| 516 | while (editing > 0) {
|
---|
[1765] | 517 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
[821] | 518 | if (crashme > 0) {
|
---|
| 519 | if ((end - text) > 1) {
|
---|
| 520 | crash_dummy(); // generate a random command
|
---|
| 521 | } else {
|
---|
| 522 | crashme = 0;
|
---|
[1765] | 523 | dot = string_insert(text, "\n\n##### Ran out of text to work on. #####\n\n"); // insert the string
|
---|
[821] | 524 | refresh(FALSE);
|
---|
| 525 | }
|
---|
| 526 | }
|
---|
[1765] | 527 | #endif
|
---|
[821] | 528 | last_input_char = c = get_one_char(); // get a cmd from user
|
---|
[1765] | 529 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
[821] | 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 | }
|
---|
[1765] | 535 | #endif
|
---|
| 536 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
[821] | 537 | // These are commands that change text[].
|
---|
| 538 | // Remember the input for the "." command
|
---|
| 539 | if (!adding2q && ioq_start == 0
|
---|
[1765] | 540 | && strchr(modifying_cmds, c)
|
---|
| 541 | ) {
|
---|
[821] | 542 | start_new_cmd_q(c);
|
---|
| 543 | }
|
---|
[1765] | 544 | #endif
|
---|
[821] | 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 | }
|
---|
[1765] | 555 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
[821] | 556 | if (crashme > 0)
|
---|
| 557 | crash_test(); // test editor variables
|
---|
[1765] | 558 | #endif
|
---|
[821] | 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 -------------------------------------
|
---|
[1765] | 568 | #if ENABLE_FEATURE_VI_COLON
|
---|
| 569 | static char *get_one_address(char * p, int *addr) // get colon addr, if present
|
---|
[821] | 570 | {
|
---|
| 571 | int st;
|
---|
[1765] | 572 | char *q;
|
---|
[821] | 573 |
|
---|
[1765] | 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
|
---|
[821] | 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);
|
---|
[1765] | 586 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
[821] | 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';
|
---|
[1765] | 594 | q = mark[(unsigned char) c];
|
---|
[821] | 595 | if (q != NULL) { // is mark valid
|
---|
| 596 | *addr = count_lines(text, q); // count lines
|
---|
| 597 | }
|
---|
| 598 | }
|
---|
[1765] | 599 | #endif
|
---|
| 600 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
[821] | 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 | }
|
---|
[1765] | 609 | pat = xstrdup(buf); // save copy of pattern
|
---|
[821] | 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);
|
---|
[1765] | 617 | #endif
|
---|
[821] | 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
|
---|
[1765] | 623 | sscanf(p, "%d%n", addr, &st);
|
---|
[821] | 624 | p += st;
|
---|
| 625 | } else { // I don't reconise this
|
---|
| 626 | // unrecognised address- assume -1
|
---|
| 627 | *addr = -1;
|
---|
| 628 | }
|
---|
[1765] | 629 | return p;
|
---|
[821] | 630 | }
|
---|
| 631 |
|
---|
[1765] | 632 | static char *get_address(char *p, int *b, int *e) // get two colon addrs, if present
|
---|
[821] | 633 | {
|
---|
| 634 | //----- get the address' i.e., 1,3 'a,'b -----
|
---|
| 635 | // get FIRST addr, if present
|
---|
[1765] | 636 | while (isblank(*p))
|
---|
[821] | 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);
|
---|
[1765] | 645 | while (isblank(*p))
|
---|
[821] | 646 | p++;
|
---|
| 647 | if (*p == ',') { // is there a address separator
|
---|
| 648 | p++;
|
---|
[1765] | 649 | while (isblank(*p))
|
---|
[821] | 650 | p++;
|
---|
| 651 | // get SECOND addr, if present
|
---|
| 652 | p = get_one_address(p, e);
|
---|
| 653 | }
|
---|
[1765] | 654 | ga0:
|
---|
| 655 | while (isblank(*p))
|
---|
[821] | 656 | p++; // skip over trailing spaces
|
---|
[1765] | 657 | return p;
|
---|
[821] | 658 | }
|
---|
| 659 |
|
---|
[1765] | 660 | #if ENABLE_FEATURE_VI_SET && ENABLE_FEATURE_VI_SETOPTS
|
---|
| 661 | static void setops(const char *args, const char *opname, int flg_no,
|
---|
[821] | 662 | const char *short_opname, int opt)
|
---|
| 663 | {
|
---|
[1765] | 664 | const char *a = args + flg_no;
|
---|
[821] | 665 | int l = strlen(opname) - 1; /* opname have + ' ' */
|
---|
| 666 |
|
---|
[1765] | 667 | if (strncasecmp(a, opname, l) == 0
|
---|
| 668 | || strncasecmp(a, short_opname, 2) == 0
|
---|
| 669 | ) {
|
---|
| 670 | if (flg_no)
|
---|
[821] | 671 | vi_setops &= ~opt;
|
---|
[1765] | 672 | else
|
---|
[821] | 673 | vi_setops |= opt;
|
---|
| 674 | }
|
---|
| 675 | }
|
---|
| 676 | #endif
|
---|
| 677 |
|
---|
[1765] | 678 | static void colon(char * buf)
|
---|
[821] | 679 | {
|
---|
[1765] | 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;
|
---|
[821] | 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 |
|
---|
[1765] | 700 | if (!buf[0])
|
---|
[821] | 701 | goto vc1;
|
---|
| 702 | if (*buf == ':')
|
---|
| 703 | buf++; // move past the ':'
|
---|
| 704 |
|
---|
[1765] | 705 | li = ch = i = 0;
|
---|
[821] | 706 | b = e = -1;
|
---|
| 707 | q = text; // assume 1,$ for the range
|
---|
| 708 | r = end - 1;
|
---|
| 709 | li = count_lines(text, end - 1);
|
---|
[1765] | 710 | fn = current_filename; // default to current file
|
---|
| 711 | memset(cmd, '\0', MAX_LINELEN); // clear cmd[]
|
---|
| 712 | memset(args, '\0', MAX_LINELEN); // clear args[]
|
---|
[821] | 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
|
---|
[1765] | 728 | while (isblank(*buf))
|
---|
[821] | 729 | buf++;
|
---|
[1765] | 730 | strcpy(args, buf);
|
---|
| 731 | buf1 = last_char_is(cmd, '!');
|
---|
[821] | 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 ------------
|
---|
[1765] | 753 | i = strlen(cmd);
|
---|
[821] | 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 | }
|
---|
[1765] | 759 | }
|
---|
| 760 | #if ENABLE_FEATURE_ALLOW_EXEC
|
---|
| 761 | else if (strncmp(cmd, "!", 1) == 0) { // run a cmd
|
---|
| 762 | int retcode;
|
---|
[821] | 763 | // :!ls run the <cmd>
|
---|
[1765] | 764 | alarm(0); // wait for input- no alarms
|
---|
[821] | 765 | place_cursor(rows - 1, 0, FALSE); // go to Status line
|
---|
| 766 | clear_to_eol(); // clear the line
|
---|
| 767 | cookmode();
|
---|
[1765] | 768 | retcode = system(orig_buf + 1); // run the cmd
|
---|
| 769 | if (retcode)
|
---|
| 770 | printf("\nshell returned %i\n\n", retcode);
|
---|
[821] | 771 | rawmode();
|
---|
| 772 | Hit_Return(); // let user see results
|
---|
[1765] | 773 | alarm(3); // done waiting for input
|
---|
| 774 | }
|
---|
| 775 | #endif
|
---|
| 776 | else if (strncmp(cmd, "=", i) == 0) { // where is the address
|
---|
[821] | 777 | if (b < 0) { // no addr given- use defaults
|
---|
| 778 | b = e = count_lines(text, dot);
|
---|
| 779 | }
|
---|
| 780 | psb("%d", b);
|
---|
[1765] | 781 | } else if (strncasecmp(cmd, "delete", i) == 0) { // delete lines
|
---|
[821] | 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();
|
---|
[1765] | 788 | } else if (strncasecmp(cmd, "edit", i) == 0) { // Edit a file
|
---|
[821] | 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 | }
|
---|
[1765] | 794 | if (args[0]) {
|
---|
[821] | 795 | // the user supplied a file name
|
---|
[1765] | 796 | fn = args;
|
---|
| 797 | } else if (current_filename && current_filename[0]) {
|
---|
[821] | 798 | // no user supplied name- use the current filename
|
---|
[1765] | 799 | // fn = current_filename; was set by default
|
---|
[821] | 800 | } else {
|
---|
| 801 | // no user file name, no current name- punt
|
---|
| 802 | psbs("No current filename");
|
---|
| 803 | goto vc1;
|
---|
| 804 | }
|
---|
| 805 |
|
---|
[1765] | 806 | if (init_text_buffer(fn) < 0)
|
---|
| 807 | goto vc1;
|
---|
[821] | 808 |
|
---|
[1765] | 809 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
[821] | 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 | }
|
---|
[1765] | 818 | #endif
|
---|
[821] | 819 | // how many lines in text[]?
|
---|
| 820 | li = count_lines(text, end - 1);
|
---|
| 821 | psb("\"%s\"%s"
|
---|
[1765] | 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 | )
|
---|
[821] | 828 | li, ch);
|
---|
[1765] | 829 | } else if (strncasecmp(cmd, "file", i) == 0) { // what File is this
|
---|
[821] | 830 | if (b != -1 || e != -1) {
|
---|
[1765] | 831 | ni("No address allowed on this command");
|
---|
[821] | 832 | goto vc1;
|
---|
| 833 | }
|
---|
[1765] | 834 | if (args[0]) {
|
---|
[821] | 835 | // user wants a new filename
|
---|
[1765] | 836 | free(current_filename);
|
---|
| 837 | current_filename = xstrdup(args);
|
---|
[821] | 838 | } else {
|
---|
| 839 | // user wants file status info
|
---|
| 840 | last_status_cksum = 0; // force status update
|
---|
| 841 | }
|
---|
[1765] | 842 | } else if (strncasecmp(cmd, "features", i) == 0) { // what features are available
|
---|
[821] | 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();
|
---|
[1765] | 850 | } else if (strncasecmp(cmd, "list", i) == 0) { // literal print line
|
---|
[821] | 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;
|
---|
[1765] | 862 | c_is_no_print = (c & 0x80) && !Isprint(c);
|
---|
[821] | 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('^');
|
---|
[1765] | 871 | if (c == 127)
|
---|
[821] | 872 | c = '?';
|
---|
[1765] | 873 | else
|
---|
| 874 | c += '@';
|
---|
[821] | 875 | }
|
---|
| 876 | putchar(c);
|
---|
| 877 | if (c_is_no_print)
|
---|
| 878 | standout_end();
|
---|
| 879 | }
|
---|
[1765] | 880 | #if ENABLE_FEATURE_VI_SET
|
---|
| 881 | vc2:
|
---|
| 882 | #endif
|
---|
[821] | 883 | Hit_Return();
|
---|
[1765] | 884 | } else if (strncasecmp(cmd, "quit", i) == 0 // Quit
|
---|
| 885 | || strncasecmp(cmd, "next", i) == 0 // edit next file
|
---|
| 886 | ) {
|
---|
[821] | 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;
|
---|
[1765] | 911 | } else if (strncasecmp(cmd, "read", i) == 0) { // read file into text[]
|
---|
[821] | 912 | fn = args;
|
---|
[1765] | 913 | if (!fn[0]) {
|
---|
[821] | 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);
|
---|
[1765] | 923 | ch = file_insert(fn, q USE_FEATURE_VI_READONLY(, 0));
|
---|
[821] | 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\""
|
---|
[1765] | 929 | USE_FEATURE_VI_READONLY("%s")
|
---|
[821] | 930 | " %dL, %dC", fn,
|
---|
[1765] | 931 | USE_FEATURE_VI_READONLY((readonly_mode ? " [Readonly]" : ""),)
|
---|
[821] | 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 | }
|
---|
[1765] | 939 | } else if (strncasecmp(cmd, "rewind", i) == 0) { // rewind cmd line args
|
---|
[821] | 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 | }
|
---|
[1765] | 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
|
---|
[821] | 952 | i = 0; // offset into args
|
---|
[1765] | 953 | // only blank is regarded as args delmiter. What about tab '\t' ?
|
---|
| 954 | if (!args[0] || strcasecmp(args, "all") == 0) {
|
---|
[821] | 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");
|
---|
[1765] | 959 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
[821] | 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);
|
---|
[1765] | 973 | #endif
|
---|
[821] | 974 | printf("\r\n");
|
---|
| 975 | goto vc2;
|
---|
| 976 | }
|
---|
[1765] | 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
|
---|
[821] | 996 | }
|
---|
[1765] | 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;
|
---|
[821] | 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"
|
---|
[1765] | 1010 | R = strchr(F, c); // middle delimiter
|
---|
[821] | 1011 | if (!R) goto colon_s_fail;
|
---|
| 1012 | *R++ = '\0'; // terminate "find"
|
---|
[1765] | 1013 | buf1 = strchr(R, c);
|
---|
[821] | 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
|
---|
[1765] | 1029 | vc4:
|
---|
[821] | 1030 | buf1 = char_search(q, F, FORWARD, LIMITED); // search cur line only for "find"
|
---|
[1765] | 1031 | if (buf1) {
|
---|
| 1032 | // we found the "find" pattern - delete it
|
---|
| 1033 | text_hole_delete(buf1, buf1 + strlen(F) - 1);
|
---|
[821] | 1034 | // inset the "replace" patern
|
---|
[1765] | 1035 | string_insert(buf1, R); // insert the string
|
---|
[821] | 1036 | // check for "global" :s/foo/bar/g
|
---|
| 1037 | if (gflag == 1) {
|
---|
[1765] | 1038 | if ((buf1 + strlen(R)) < end_line(ls)) {
|
---|
| 1039 | q = buf1 + strlen(R);
|
---|
[821] | 1040 | goto vc4; // don't let q move past cur line
|
---|
| 1041 | }
|
---|
| 1042 | }
|
---|
| 1043 | }
|
---|
| 1044 | q = next_line(ls);
|
---|
| 1045 | }
|
---|
[1765] | 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 | ) {
|
---|
[821] | 1054 | // is there a file name to write to?
|
---|
[1765] | 1055 | if (args[0]) {
|
---|
[821] | 1056 | fn = args;
|
---|
| 1057 | }
|
---|
[1765] | 1058 | #if ENABLE_FEATURE_VI_READONLY
|
---|
| 1059 | if (readonly_mode && !useforce) {
|
---|
[821] | 1060 | psbs("\"%s\" File is read only", fn);
|
---|
| 1061 | goto vc3;
|
---|
| 1062 | }
|
---|
[1765] | 1063 | #endif
|
---|
[821] | 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)
|
---|
[1765] | 1083 | psbs("\"%s\" %s", fn, strerror(errno));
|
---|
[821] | 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 | }
|
---|
[1765] | 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
|
---|
[821] | 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]",
|
---|
[1765] | 1108 | li, strlen(reg[YDreg]), what_reg());
|
---|
| 1109 | #endif
|
---|
[821] | 1110 | } else {
|
---|
| 1111 | // cmd unknown
|
---|
[1765] | 1112 | ni(cmd);
|
---|
[821] | 1113 | }
|
---|
[1765] | 1114 | vc1:
|
---|
[821] | 1115 | dot = bound_dot(dot); // make sure "dot" is valid
|
---|
| 1116 | return;
|
---|
[1765] | 1117 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
| 1118 | colon_s_fail:
|
---|
[821] | 1119 | psb(":s expression missing delimiters");
|
---|
| 1120 | #endif
|
---|
| 1121 | }
|
---|
| 1122 |
|
---|
[1765] | 1123 | #endif /* FEATURE_VI_COLON */
|
---|
[821] | 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 |
|
---|
[1765] | 1137 | static int next_tabstop(int col)
|
---|
| 1138 | {
|
---|
| 1139 | return col + ((tabstop - 1) - (col % tabstop));
|
---|
| 1140 | }
|
---|
| 1141 |
|
---|
[821] | 1142 | //----- Synchronize the cursor to Dot --------------------------
|
---|
[1765] | 1143 | static void sync_cursor(char * d, int *row, int *col)
|
---|
[821] | 1144 | {
|
---|
[1765] | 1145 | char *beg_cur; // begin and end of "d" line
|
---|
| 1146 | char *end_scr; // begin and end of screen
|
---|
| 1147 | char *tp;
|
---|
[821] | 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);
|
---|
[1765] | 1158 | sc1:
|
---|
[821] | 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') {
|
---|
[1765] | 1194 | if (d == tp && cmd_mode) { /* handle tabs like real vi */
|
---|
| 1195 | break;
|
---|
| 1196 | } else {
|
---|
| 1197 | co = next_tabstop(co);
|
---|
| 1198 | }
|
---|
[821] | 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 ---------------------------------
|
---|
[1765] | 1235 | static char *begin_line(char * p) // return pointer to first char cur line
|
---|
[821] | 1236 | {
|
---|
| 1237 | while (p > text && p[-1] != '\n')
|
---|
| 1238 | p--; // go to cur line B-o-l
|
---|
[1765] | 1239 | return p;
|
---|
[821] | 1240 | }
|
---|
| 1241 |
|
---|
[1765] | 1242 | static char *end_line(char * p) // return pointer to NL of cur line line
|
---|
[821] | 1243 | {
|
---|
| 1244 | while (p < end - 1 && *p != '\n')
|
---|
| 1245 | p++; // go to cur line E-o-l
|
---|
[1765] | 1246 | return p;
|
---|
[821] | 1247 | }
|
---|
| 1248 |
|
---|
[1765] | 1249 | static inline char *dollar_line(char * p) // return pointer to just before NL line
|
---|
[821] | 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--;
|
---|
[1765] | 1256 | return p;
|
---|
[821] | 1257 | }
|
---|
| 1258 |
|
---|
[1765] | 1259 | static char *prev_line(char * p) // return pointer first char prev line
|
---|
[821] | 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
|
---|
[1765] | 1265 | return p;
|
---|
[821] | 1266 | }
|
---|
| 1267 |
|
---|
[1765] | 1268 | static char *next_line(char * p) // return pointer first char next line
|
---|
[821] | 1269 | {
|
---|
| 1270 | p = end_line(p);
|
---|
| 1271 | if (*p == '\n' && p < end - 1)
|
---|
| 1272 | p++; // step to next line
|
---|
[1765] | 1273 | return p;
|
---|
[821] | 1274 | }
|
---|
| 1275 |
|
---|
| 1276 | //----- Text Information Routines ------------------------------
|
---|
[1765] | 1277 | static char *end_screen(void)
|
---|
[821] | 1278 | {
|
---|
[1765] | 1279 | char *q;
|
---|
[821] | 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);
|
---|
[1765] | 1287 | return q;
|
---|
[821] | 1288 | }
|
---|
| 1289 |
|
---|
[1765] | 1290 | static int count_lines(char * start, char * stop) // count line from start to stop
|
---|
[821] | 1291 | {
|
---|
[1765] | 1292 | char *q;
|
---|
[821] | 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 | }
|
---|
[1765] | 1306 | return cnt;
|
---|
[821] | 1307 | }
|
---|
| 1308 |
|
---|
[1765] | 1309 | static char *find_line(int li) // find begining of line #li
|
---|
[821] | 1310 | {
|
---|
[1765] | 1311 | char *q;
|
---|
[821] | 1312 |
|
---|
| 1313 | for (q = text; li > 1; li--) {
|
---|
| 1314 | q = next_line(q);
|
---|
| 1315 | }
|
---|
[1765] | 1316 | return q;
|
---|
[821] | 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 |
|
---|
[1765] | 1342 | static char *move_to_col(char * p, int l)
|
---|
[821] | 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') {
|
---|
[1765] | 1352 | co = next_tabstop(co);
|
---|
[821] | 1353 | } else if (*p < ' ' || *p == 127) {
|
---|
| 1354 | co++; // display as ^X, use 2 columns
|
---|
| 1355 | }
|
---|
| 1356 | } while (++co <= l && p++ < end);
|
---|
[1765] | 1357 | return p;
|
---|
[821] | 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 | {
|
---|
[1765] | 1372 | char *q;
|
---|
[821] | 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 | {
|
---|
[1765] | 1403 | text_hole_delete(dot, dot);
|
---|
[821] | 1404 | }
|
---|
| 1405 |
|
---|
[1765] | 1406 | static char *bound_dot(char * p) // make sure text[0] <= P < "end"
|
---|
[821] | 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 | }
|
---|
[1765] | 1416 | return p;
|
---|
[821] | 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 |
|
---|
[1765] | 1432 | static char *new_screen(int ro, int co)
|
---|
[821] | 1433 | {
|
---|
| 1434 | int li;
|
---|
| 1435 |
|
---|
| 1436 | free(screen);
|
---|
| 1437 | screensize = ro * co + 8;
|
---|
[1765] | 1438 | screen = xmalloc(screensize);
|
---|
[821] | 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 | }
|
---|
[1765] | 1445 | return screen;
|
---|
[821] | 1446 | }
|
---|
| 1447 |
|
---|
[1765] | 1448 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
| 1449 | static int mycmp(const char * s1, const char * s2, int len)
|
---|
[821] | 1450 | {
|
---|
| 1451 | int i;
|
---|
| 1452 |
|
---|
[1765] | 1453 | i = strncmp(s1, s2, len);
|
---|
| 1454 | if (ENABLE_FEATURE_VI_SETOPTS && ignorecase) {
|
---|
| 1455 | i = strncasecmp(s1, s2, len);
|
---|
[821] | 1456 | }
|
---|
[1765] | 1457 | return i;
|
---|
[821] | 1458 | }
|
---|
| 1459 |
|
---|
[1765] | 1460 | // search for pattern starting at p
|
---|
| 1461 | static char *char_search(char * p, const char * pat, int dir, int range)
|
---|
[821] | 1462 | {
|
---|
| 1463 | #ifndef REGEX_SEARCH
|
---|
[1765] | 1464 | char *start, *stop;
|
---|
[821] | 1465 | int len;
|
---|
| 1466 |
|
---|
[1765] | 1467 | len = strlen(pat);
|
---|
[821] | 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) {
|
---|
[1765] | 1474 | return start;
|
---|
[821] | 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) {
|
---|
[1765] | 1483 | return start;
|
---|
[821] | 1484 | }
|
---|
| 1485 | }
|
---|
| 1486 | }
|
---|
| 1487 | // pattern not found
|
---|
[1765] | 1488 | return NULL;
|
---|
| 1489 | #else /* REGEX_SEARCH */
|
---|
[821] | 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 |
|
---|
[1765] | 1516 | q = re_compile_pattern(pat, strlen(pat), &preg);
|
---|
[821] | 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 | }
|
---|
[1765] | 1543 | cs1:
|
---|
[821] | 1544 | if (dir == FORWARD) {
|
---|
| 1545 | p = p + i;
|
---|
| 1546 | } else {
|
---|
| 1547 | p = p - i;
|
---|
| 1548 | }
|
---|
[1765] | 1549 | return p;
|
---|
| 1550 | #endif /* REGEX_SEARCH */
|
---|
[821] | 1551 | }
|
---|
[1765] | 1552 | #endif /* FEATURE_VI_SEARCH */
|
---|
[821] | 1553 |
|
---|
[1765] | 1554 | static char *char_insert(char * p, char c) // insert the char c at 'p'
|
---|
[821] | 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
|
---|
[1765] | 1569 | if ((p[-1] != '\n') && (dot > text)) {
|
---|
[821] | 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[]
|
---|
[1765] | 1580 | char *sp; // "save p"
|
---|
[821] | 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
|
---|
[1765] | 1586 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
[821] | 1587 | if (showmatch && strchr(")]}", *sp) != NULL) {
|
---|
| 1588 | showmatching(sp);
|
---|
| 1589 | }
|
---|
| 1590 | if (autoindent && c == '\n') { // auto indent the new line
|
---|
[1765] | 1591 | char *q;
|
---|
[821] | 1592 |
|
---|
| 1593 | q = prev_line(p); // use prev line as templet
|
---|
[1765] | 1594 | for (; isblank(*q); q++) {
|
---|
[821] | 1595 | p = stupid_insert(p, *q); // insert the char
|
---|
| 1596 | }
|
---|
| 1597 | }
|
---|
[1765] | 1598 | #endif
|
---|
[821] | 1599 | }
|
---|
[1765] | 1600 | return p;
|
---|
[821] | 1601 | }
|
---|
| 1602 |
|
---|
[1765] | 1603 | static char *stupid_insert(char * p, char c) // stupidly insert the char c at 'p'
|
---|
[821] | 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 | }
|
---|
[1765] | 1611 | return p;
|
---|
[821] | 1612 | }
|
---|
| 1613 |
|
---|
[1765] | 1614 | static char find_range(char ** start, char ** stop, char c)
|
---|
[821] | 1615 | {
|
---|
[1765] | 1616 | char *save_dot, *p, *q;
|
---|
[821] | 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;
|
---|
[1765] | 1668 | return c;
|
---|
[821] | 1669 | }
|
---|
| 1670 |
|
---|
[1765] | 1671 | static int st_test(char * p, int type, int dir, char * tested)
|
---|
[821] | 1672 | {
|
---|
[1765] | 1673 | char c, c0, ci;
|
---|
[821] | 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;
|
---|
[1765] | 1702 | return test;
|
---|
[821] | 1703 | }
|
---|
| 1704 |
|
---|
[1765] | 1705 | static char *skip_thing(char * p, int linecnt, int dir, int type)
|
---|
[821] | 1706 | {
|
---|
[1765] | 1707 | char c;
|
---|
[821] | 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 | }
|
---|
[1765] | 1719 | return p;
|
---|
[821] | 1720 | }
|
---|
| 1721 |
|
---|
| 1722 | // find matching char of pair () [] {}
|
---|
[1765] | 1723 | static char *find_pair(char * p, char c)
|
---|
[821] | 1724 | {
|
---|
[1765] | 1725 | char match, *q;
|
---|
[821] | 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] | 1765 | return q;
|
---|
[821] | 1766 | }
|
---|
| 1767 |
|
---|
[1765] | 1768 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
[821] | 1769 | // show the matching char of a pair, () [] {}
|
---|
[1765] | 1770 | static void showmatching(char * p)
|
---|
[821] | 1771 | {
|
---|
[1765] | 1772 | char *q, *save_dot;
|
---|
[821] | 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
|
---|
[1765] | 1783 | mysleep(40); // give user some time
|
---|
[821] | 1784 | dot = save_dot; // go back to old loc
|
---|
| 1785 | refresh(FALSE);
|
---|
| 1786 | }
|
---|
| 1787 | }
|
---|
[1765] | 1788 | #endif /* FEATURE_VI_SETOPTS */
|
---|
[821] | 1789 |
|
---|
| 1790 | // open a hole in text[]
|
---|
[1765] | 1791 | static char *text_hole_make(char * p, int size) // at "p", make a 'size' byte hole
|
---|
[821] | 1792 | {
|
---|
[1765] | 1793 | char *src, *dest;
|
---|
[821] | 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
|
---|
[1765] | 1801 | if ( ((end + size) >= (text + text_size)) // TODO: realloc here
|
---|
| 1802 | || memmove(dest, src, cnt) != dest) {
|
---|
[821] | 1803 | psbs("can't create room for new characters");
|
---|
[1765] | 1804 | p = NULL;
|
---|
| 1805 | goto thm0;
|
---|
[821] | 1806 | }
|
---|
| 1807 | memset(p, ' ', size); // clear new hole
|
---|
[1765] | 1808 | end += size; // adjust the new END
|
---|
[821] | 1809 | file_modified++; // has the file been modified
|
---|
[1765] | 1810 | thm0:
|
---|
| 1811 | return p;
|
---|
[821] | 1812 | }
|
---|
| 1813 |
|
---|
| 1814 | // close a hole in text[]
|
---|
[1765] | 1815 | static char *text_hole_delete(char * p, char * q) // delete "p" thru "q", inclusive
|
---|
[821] | 1816 | {
|
---|
[1765] | 1817 | char *src, *dest;
|
---|
[821] | 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 | }
|
---|
[1765] | 1839 | thd_atend:
|
---|
[821] | 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
|
---|
[1765] | 1846 | thd0:
|
---|
| 1847 | return dest;
|
---|
[821] | 1848 | }
|
---|
| 1849 |
|
---|
| 1850 | // copy text into register, then delete text.
|
---|
| 1851 | // if dist <= 0, do not include, or go past, a NewLine
|
---|
| 1852 | //
|
---|
[1765] | 1853 | static char *yank_delete(char * start, char * stop, int dist, int yf)
|
---|
[821] | 1854 | {
|
---|
[1765] | 1855 | char *p;
|
---|
[821] | 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) {
|
---|
[1765] | 1865 | // we cannot cross NL boundaries
|
---|
[821] | 1866 | p = start;
|
---|
| 1867 | if (*p == '\n')
|
---|
[1765] | 1868 | return p;
|
---|
[821] | 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;
|
---|
[1765] | 1878 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
[821] | 1879 | text_yank(start, stop, YDreg);
|
---|
[1765] | 1880 | #endif
|
---|
[821] | 1881 | if (yf == YANKDEL) {
|
---|
| 1882 | p = text_hole_delete(start, stop);
|
---|
| 1883 | } // delete lines
|
---|
[1765] | 1884 | return p;
|
---|
[821] | 1885 | }
|
---|
| 1886 |
|
---|
| 1887 | static void show_help(void)
|
---|
| 1888 | {
|
---|
| 1889 | puts("These features are available:"
|
---|
[1765] | 1890 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
[821] | 1891 | "\n\tPattern searches with / and ?"
|
---|
[1765] | 1892 | #endif
|
---|
| 1893 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
[821] | 1894 | "\n\tLast command repeat with \'.\'"
|
---|
[1765] | 1895 | #endif
|
---|
| 1896 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
[821] | 1897 | "\n\tLine marking with 'x"
|
---|
| 1898 | "\n\tNamed buffers with \"x"
|
---|
[1765] | 1899 | #endif
|
---|
| 1900 | #if ENABLE_FEATURE_VI_READONLY
|
---|
[821] | 1901 | "\n\tReadonly if vi is called as \"view\""
|
---|
| 1902 | "\n\tReadonly with -R command line arg"
|
---|
[1765] | 1903 | #endif
|
---|
| 1904 | #if ENABLE_FEATURE_VI_SET
|
---|
[821] | 1905 | "\n\tSome colon mode commands with \':\'"
|
---|
[1765] | 1906 | #endif
|
---|
| 1907 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
[821] | 1908 | "\n\tSettable options with \":set\""
|
---|
[1765] | 1909 | #endif
|
---|
| 1910 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
[821] | 1911 | "\n\tSignal catching- ^C"
|
---|
| 1912 | "\n\tJob suspend and resume with ^Z"
|
---|
[1765] | 1913 | #endif
|
---|
| 1914 | #if ENABLE_FEATURE_VI_WIN_RESIZE
|
---|
[821] | 1915 | "\n\tAdapt to window re-sizes"
|
---|
[1765] | 1916 | #endif
|
---|
[821] | 1917 | );
|
---|
| 1918 | }
|
---|
| 1919 |
|
---|
[1765] | 1920 | static inline void print_literal(char * buf, const char * s) // copy s to buf, convert unprintable
|
---|
[821] | 1921 | {
|
---|
[1765] | 1922 | unsigned char c;
|
---|
| 1923 | char b[2];
|
---|
[821] | 1924 |
|
---|
| 1925 | b[1] = '\0';
|
---|
[1765] | 1926 | buf[0] = '\0';
|
---|
| 1927 | if (!s[0])
|
---|
| 1928 | s = "(NULL)";
|
---|
| 1929 | for (; *s; s++) {
|
---|
[821] | 1930 | int c_is_no_print;
|
---|
| 1931 |
|
---|
| 1932 | c = *s;
|
---|
[1765] | 1933 | c_is_no_print = (c & 0x80) && !Isprint(c);
|
---|
[821] | 1934 | if (c_is_no_print) {
|
---|
[1765] | 1935 | strcat(buf, SOn);
|
---|
[821] | 1936 | c = '.';
|
---|
| 1937 | }
|
---|
| 1938 | if (c < ' ' || c == 127) {
|
---|
[1765] | 1939 | strcat(buf, "^");
|
---|
| 1940 | if (c == 127)
|
---|
[821] | 1941 | c = '?';
|
---|
[1765] | 1942 | else
|
---|
| 1943 | c += '@';
|
---|
[821] | 1944 | }
|
---|
| 1945 | b[0] = c;
|
---|
[1765] | 1946 | strcat(buf, b);
|
---|
[821] | 1947 | if (c_is_no_print)
|
---|
[1765] | 1948 | strcat(buf, SOs);
|
---|
| 1949 | if (*s == '\n')
|
---|
| 1950 | strcat(buf, "$");
|
---|
[821] | 1951 | }
|
---|
| 1952 | }
|
---|
| 1953 |
|
---|
[1765] | 1954 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
| 1955 | static void start_new_cmd_q(char c)
|
---|
[821] | 1956 | {
|
---|
| 1957 | // release old cmd
|
---|
| 1958 | free(last_modifying_cmd);
|
---|
| 1959 | // get buffer for new cmd
|
---|
[1765] | 1960 | last_modifying_cmd = xzalloc(MAX_LINELEN);
|
---|
[821] | 1961 | // if there is a current cmd count put it in the buffer first
|
---|
| 1962 | if (cmdcnt > 0)
|
---|
[1765] | 1963 | sprintf(last_modifying_cmd, "%d%c", cmdcnt, c);
|
---|
[821] | 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 | {
|
---|
[1765] | 1971 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
[821] | 1972 | YDreg = 26; // go back to default Yank/Delete reg
|
---|
[1765] | 1973 | #endif
|
---|
[821] | 1974 | adding2q = 0;
|
---|
| 1975 | }
|
---|
[1765] | 1976 | #endif /* FEATURE_VI_DOT_CMD */
|
---|
[821] | 1977 |
|
---|
[1765] | 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'
|
---|
[821] | 1982 | {
|
---|
| 1983 | int cnt, i;
|
---|
| 1984 |
|
---|
[1765] | 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
|
---|
[821] | 1995 | }
|
---|
[1765] | 1996 | return p;
|
---|
[821] | 1997 | }
|
---|
[1765] | 1998 | #endif
|
---|
[821] | 1999 |
|
---|
[1765] | 2000 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
| 2001 | static char *text_yank(char * p, char * q, int dest) // copy text into a register
|
---|
[821] | 2002 | {
|
---|
[1765] | 2003 | char *t;
|
---|
[821] | 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
|
---|
[1765] | 2014 | t = xmalloc(cnt + 1); // get a new register
|
---|
[821] | 2015 | memset(t, '\0', cnt + 1); // clear new text[]
|
---|
[1765] | 2016 | strncpy(t, p, cnt); // copy text[] into bufer
|
---|
[821] | 2017 | reg[dest] = t;
|
---|
[1765] | 2018 | return p;
|
---|
[821] | 2019 | }
|
---|
| 2020 |
|
---|
[1765] | 2021 | static char what_reg(void)
|
---|
[821] | 2022 | {
|
---|
[1765] | 2023 | char c;
|
---|
[821] | 2024 |
|
---|
| 2025 | c = 'D'; // default to D-reg
|
---|
| 2026 | if (0 <= YDreg && YDreg <= 25)
|
---|
[1765] | 2027 | c = 'a' + (char) YDreg;
|
---|
[821] | 2028 | if (YDreg == 26)
|
---|
| 2029 | c = 'D';
|
---|
| 2030 | if (YDreg == 27)
|
---|
| 2031 | c = 'U';
|
---|
[1765] | 2032 | return c;
|
---|
[821] | 2033 | }
|
---|
| 2034 |
|
---|
[1765] | 2035 | static void check_context(char cmd)
|
---|
[821] | 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) {
|
---|
[1765] | 2041 | if (strchr(modifying_cmds, cmd) != NULL) {
|
---|
[821] | 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 |
|
---|
[1765] | 2052 | static inline char *swap_context(char * p) // goto new context for '' command make this the current context
|
---|
[821] | 2053 | {
|
---|
[1765] | 2054 | char *tmp;
|
---|
[821] | 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 | }
|
---|
[1765] | 2067 | return p;
|
---|
[821] | 2068 | }
|
---|
[1765] | 2069 | #endif /* FEATURE_VI_YANKMARK */
|
---|
[821] | 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 ---------
|
---|
[1765] | 2092 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
[821] | 2093 | static void winch_sig(int sig ATTRIBUTE_UNUSED)
|
---|
| 2094 | {
|
---|
| 2095 | signal(SIGWINCH, winch_sig);
|
---|
| 2096 | if (ENABLE_FEATURE_VI_WIN_RESIZE)
|
---|
[1765] | 2097 | get_terminal_width_height(0, &columns, &rows);
|
---|
[821] | 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);
|
---|
[1765] | 2130 | if (sig)
|
---|
[821] | 2131 | longjmp(restart, sig);
|
---|
| 2132 | }
|
---|
[1765] | 2133 | #endif /* FEATURE_VI_USE_SIGNALS */
|
---|
[821] | 2134 |
|
---|
| 2135 | static int mysleep(int hund) // sleep for 'h' 1/100 seconds
|
---|
| 2136 | {
|
---|
[1765] | 2137 | fd_set rfds;
|
---|
| 2138 | struct timeval tv;
|
---|
| 2139 |
|
---|
[821] | 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);
|
---|
[1765] | 2147 | return FD_ISSET(0, &rfds);
|
---|
[821] | 2148 | }
|
---|
| 2149 |
|
---|
| 2150 | #define readbuffer bb_common_bufsiz1
|
---|
| 2151 |
|
---|
| 2152 | static int readed_for_parse;
|
---|
| 2153 |
|
---|
| 2154 | //----- IO Routines --------------------------------------------
|
---|
[1765] | 2155 | static char readit(void) // read (maybe cursor) key from stdin
|
---|
[821] | 2156 | {
|
---|
[1765] | 2157 | char c;
|
---|
[821] | 2158 | int n;
|
---|
| 2159 | struct esc_cmds {
|
---|
| 2160 | const char *seq;
|
---|
[1765] | 2161 | char val;
|
---|
[821] | 2162 | };
|
---|
| 2163 |
|
---|
| 2164 | static const struct esc_cmds esccmds[] = {
|
---|
[1765] | 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
|
---|
[821] | 2198 | };
|
---|
[1765] | 2199 | enum { ESCCMDS_COUNT = ARRAY_SIZE(esccmds) };
|
---|
[821] | 2200 |
|
---|
[1765] | 2201 | alarm(0); // turn alarm OFF while we wait for input
|
---|
[821] | 2202 | fflush(stdout);
|
---|
| 2203 | n = readed_for_parse;
|
---|
| 2204 | // get input from User- are there already input chars in Q?
|
---|
| 2205 | if (n <= 0) {
|
---|
[1765] | 2206 | ri0:
|
---|
[821] | 2207 | // the Q is empty, wait for a typed char
|
---|
[1765] | 2208 | n = read(0, readbuffer, MAX_LINELEN - 1);
|
---|
[821] | 2209 | if (n < 0) {
|
---|
| 2210 | if (errno == EINTR)
|
---|
| 2211 | goto ri0; // interrupted sys call
|
---|
[1765] | 2212 | if (errno == EBADF || errno == EFAULT || errno == EINVAL
|
---|
| 2213 | || errno == EIO)
|
---|
[821] | 2214 | editing = 0;
|
---|
| 2215 | errno = 0;
|
---|
| 2216 | }
|
---|
[1765] | 2217 | if (n <= 0)
|
---|
[821] | 2218 | return 0; // error
|
---|
| 2219 | if (readbuffer[0] == 27) {
|
---|
[1765] | 2220 | fd_set rfds;
|
---|
| 2221 | struct timeval tv;
|
---|
[821] | 2222 |
|
---|
[1765] | 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);
|
---|
[821] | 2236 | if (r > 0) {
|
---|
| 2237 | n += r;
|
---|
| 2238 | }
|
---|
| 2239 | }
|
---|
| 2240 | }
|
---|
| 2241 | readed_for_parse = n;
|
---|
| 2242 | }
|
---|
| 2243 | c = readbuffer[0];
|
---|
[1765] | 2244 | if (c == 27 && n > 1) {
|
---|
| 2245 | // Maybe cursor or function key?
|
---|
[821] | 2246 | const struct esc_cmds *eindex;
|
---|
| 2247 |
|
---|
| 2248 | for (eindex = esccmds; eindex < &esccmds[ESCCMDS_COUNT]; eindex++) {
|
---|
| 2249 | int cnt = strlen(eindex->seq);
|
---|
| 2250 |
|
---|
[1765] | 2251 | if (n <= cnt)
|
---|
[821] | 2252 | continue;
|
---|
[1765] | 2253 | if (strncmp(eindex->seq, readbuffer + 1, cnt))
|
---|
[821] | 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 | }
|
---|
[1765] | 2261 | if (eindex == &esccmds[ESCCMDS_COUNT]) {
|
---|
[821] | 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;
|
---|
[1765] | 2270 | memmove(readbuffer, readbuffer + n, MAX_LINELEN - n);
|
---|
| 2271 | alarm(3); // we are done waiting for input, turn alarm ON
|
---|
| 2272 | return c;
|
---|
[821] | 2273 | }
|
---|
| 2274 |
|
---|
| 2275 | //----- IO Routines --------------------------------------------
|
---|
[1765] | 2276 | static char get_one_char(void)
|
---|
[821] | 2277 | {
|
---|
[1765] | 2278 | static char c;
|
---|
[821] | 2279 |
|
---|
[1765] | 2280 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
[821] | 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) {
|
---|
[1765] | 2304 | int len = strlen(last_modifying_cmd);
|
---|
| 2305 | if (len >= MAX_LINELEN - 1) {
|
---|
[821] | 2306 | psbs("last_modifying_cmd overrun");
|
---|
| 2307 | } else {
|
---|
| 2308 | // add new char to q
|
---|
| 2309 | last_modifying_cmd[len] = c;
|
---|
| 2310 | }
|
---|
| 2311 | }
|
---|
| 2312 | }
|
---|
[1765] | 2313 | #else
|
---|
[821] | 2314 | c = readit(); // get the users input
|
---|
[1765] | 2315 | #endif /* FEATURE_VI_DOT_CMD */
|
---|
| 2316 | return c; // return the char, where ever it came from
|
---|
[821] | 2317 | }
|
---|
| 2318 |
|
---|
[1765] | 2319 | static char *get_input_line(const char * prompt) // get input line- use "status line"
|
---|
[821] | 2320 | {
|
---|
[1765] | 2321 | static char *obufp;
|
---|
| 2322 |
|
---|
| 2323 | char buf[MAX_LINELEN];
|
---|
| 2324 | char c;
|
---|
[821] | 2325 | int i;
|
---|
| 2326 |
|
---|
[1765] | 2327 | strcpy(buf, prompt);
|
---|
[821] | 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
|
---|
[1765] | 2331 | write1(prompt); // write out the :, /, or ? prompt
|
---|
[821] | 2332 |
|
---|
[1765] | 2333 | i = strlen(buf);
|
---|
| 2334 | while (i < MAX_LINELEN) {
|
---|
[821] | 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);
|
---|
[1765] | 2356 | obufp = xstrdup(buf);
|
---|
| 2357 | return obufp;
|
---|
[821] | 2358 | }
|
---|
| 2359 |
|
---|
[1765] | 2360 | static int file_size(const char *fn) // what is the byte size of "fn"
|
---|
[821] | 2361 | {
|
---|
| 2362 | struct stat st_buf;
|
---|
[1765] | 2363 | int cnt;
|
---|
[821] | 2364 |
|
---|
| 2365 | cnt = -1;
|
---|
[1765] | 2366 | if (fn && fn[0] && stat(fn, &st_buf) == 0) // see if file exists
|
---|
[821] | 2367 | cnt = (int) st_buf.st_size;
|
---|
[1765] | 2368 | return cnt;
|
---|
[821] | 2369 | }
|
---|
| 2370 |
|
---|
[1765] | 2371 | static int file_insert(const char * fn, char *p
|
---|
| 2372 | USE_FEATURE_VI_READONLY(, int update_ro_status))
|
---|
[821] | 2373 | {
|
---|
[1765] | 2374 | int cnt = -1;
|
---|
| 2375 | int fd, size;
|
---|
| 2376 | struct stat statbuf;
|
---|
[821] | 2377 |
|
---|
[1765] | 2378 | /* Validate file */
|
---|
| 2379 | if (stat(fn, &statbuf) < 0) {
|
---|
| 2380 | psbs("\"%s\" %s", fn, strerror(errno));
|
---|
[821] | 2381 | goto fi0;
|
---|
| 2382 | }
|
---|
[1765] | 2383 | if ((statbuf.st_mode & S_IFREG) == 0) {
|
---|
| 2384 | // This is not a regular file
|
---|
| 2385 | psbs("\"%s\" Not a regular file", fn);
|
---|
[821] | 2386 | goto fi0;
|
---|
| 2387 | }
|
---|
[1765] | 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);
|
---|
[821] | 2392 | goto fi0;
|
---|
| 2393 | }
|
---|
[1765] | 2394 | */
|
---|
[821] | 2395 | if (p < text || p > end) {
|
---|
| 2396 | psbs("Trying to insert file outside of memory");
|
---|
| 2397 | goto fi0;
|
---|
| 2398 | }
|
---|
| 2399 |
|
---|
[1765] | 2400 | // read file to buffer
|
---|
| 2401 | fd = open(fn, O_RDONLY);
|
---|
[821] | 2402 | if (fd < 0) {
|
---|
[1765] | 2403 | psbs("\"%s\" %s", fn, strerror(errno));
|
---|
| 2404 | goto fi0;
|
---|
[821] | 2405 | }
|
---|
[1765] | 2406 | size = statbuf.st_size;
|
---|
[821] | 2407 | p = text_hole_make(p, size);
|
---|
[1765] | 2408 | if (p == NULL)
|
---|
| 2409 | goto fi0;
|
---|
[821] | 2410 | cnt = read(fd, p, size);
|
---|
| 2411 | if (cnt < 0) {
|
---|
[1765] | 2412 | psbs("\"%s\" %s", fn, strerror(errno));
|
---|
[821] | 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
|
---|
[1765] | 2417 | psbs("cannot read all of file \"%s\"", fn);
|
---|
[821] | 2418 | }
|
---|
| 2419 | if (cnt >= size)
|
---|
| 2420 | file_modified++;
|
---|
[1765] | 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;
|
---|
[821] | 2435 | }
|
---|
| 2436 |
|
---|
[1765] | 2437 |
|
---|
| 2438 | static int file_write(char * fn, char * first, char * last)
|
---|
[821] | 2439 | {
|
---|
| 2440 | int fd, cnt, charcnt;
|
---|
| 2441 |
|
---|
| 2442 | if (fn == 0) {
|
---|
| 2443 | psbs("No current filename");
|
---|
[1765] | 2444 | return -2;
|
---|
[821] | 2445 | }
|
---|
| 2446 | charcnt = 0;
|
---|
| 2447 | // FIXIT- use the correct umask()
|
---|
[1765] | 2448 | fd = open(fn, (O_WRONLY | O_CREAT | O_TRUNC), 0664);
|
---|
[821] | 2449 | if (fd < 0)
|
---|
[1765] | 2450 | return -1;
|
---|
[821] | 2451 | cnt = last - first + 1;
|
---|
| 2452 | charcnt = write(fd, first, cnt);
|
---|
| 2453 | if (charcnt == cnt) {
|
---|
| 2454 | // good write
|
---|
[1765] | 2455 | //file_modified = FALSE; // the file has not been modified
|
---|
[821] | 2456 | } else {
|
---|
| 2457 | charcnt = 0;
|
---|
| 2458 | }
|
---|
| 2459 | close(fd);
|
---|
[1765] | 2460 | return charcnt;
|
---|
[821] | 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 | {
|
---|
[1765] | 2478 | char cm1[MAX_LINELEN];
|
---|
[821] | 2479 | char *cm;
|
---|
[1765] | 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
|
---|
[821] | 2486 |
|
---|
[1765] | 2487 | memset(cm1, '\0', MAX_LINELEN); // clear the buffer
|
---|
[821] | 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
|
---|
[1765] | 2495 | sprintf(cm1, CMrc, row + 1, col + 1);
|
---|
| 2496 | cm = cm1;
|
---|
| 2497 | if (!opti)
|
---|
| 2498 | goto pc0;
|
---|
[821] | 2499 |
|
---|
[1765] | 2500 | #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
[821] | 2501 | //----- find the minimum # of chars to move cursor -------------
|
---|
| 2502 | //----- 2. Try moving with discreet chars (Newline, [back]space, ...)
|
---|
[1765] | 2503 | memset(cm2, '\0', MAX_LINELEN); // clear the buffer
|
---|
[821] | 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
|
---|
[1765] | 2521 | strncat(cm2, screenp, col);
|
---|
[821] | 2522 |
|
---|
| 2523 | //----- 3. Try some other way of moving cursor
|
---|
| 2524 | //---------------------------------------------
|
---|
| 2525 |
|
---|
| 2526 | // pick the shortest cursor motion to send out
|
---|
[1765] | 2527 | cm = cm1;
|
---|
[821] | 2528 | if (strlen(cm2) < strlen(cm)) {
|
---|
[1765] | 2529 | cm = cm2;
|
---|
[821] | 2530 | } /* else if (strlen(cm3) < strlen(cm)) {
|
---|
| 2531 | cm= cm3;
|
---|
| 2532 | } */
|
---|
[1765] | 2533 | #endif /* FEATURE_VI_OPTIMIZE_CURSOR */
|
---|
| 2534 | pc0:
|
---|
[821] | 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);
|
---|
[1765] | 2567 | mysleep(h);
|
---|
[821] | 2568 | standout_end(); // send "end reverse video" sequence
|
---|
| 2569 | redraw(TRUE);
|
---|
| 2570 | }
|
---|
| 2571 |
|
---|
| 2572 | static void Indicate_Error(void)
|
---|
| 2573 | {
|
---|
[1765] | 2574 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
[821] | 2575 | if (crashme > 0)
|
---|
| 2576 | return; // generate a random command
|
---|
[1765] | 2577 | #endif
|
---|
[821] | 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 |
|
---|
[1765] | 2592 | static int bufsum(char *buf, int count)
|
---|
[821] | 2593 | {
|
---|
| 2594 | int sum = 0;
|
---|
[1765] | 2595 | char *e = buf + count;
|
---|
| 2596 |
|
---|
[821] | 2597 | while (buf < e)
|
---|
[1765] | 2598 | sum += (unsigned char) *buf++;
|
---|
[821] | 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
|
---|
[1765] | 2616 | write1(status_buffer);
|
---|
[821] | 2617 | clear_to_eol();
|
---|
| 2618 | if (have_status_msg) {
|
---|
[1765] | 2619 | if (((int)strlen(status_buffer) - (have_status_msg - 1)) >
|
---|
[821] | 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);
|
---|
[1765] | 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
|
---|
[821] | 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);
|
---|
[1765] | 2652 | vsprintf(status_buffer, format, args);
|
---|
[821] | 2653 | va_end(args);
|
---|
| 2654 |
|
---|
| 2655 | have_status_msg = 1;
|
---|
| 2656 | }
|
---|
| 2657 |
|
---|
[1765] | 2658 | static void ni(const char * s) // display messages
|
---|
[821] | 2659 | {
|
---|
[1765] | 2660 | char buf[MAX_LINELEN];
|
---|
[821] | 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 | {
|
---|
[1765] | 2668 | static int tot;
|
---|
| 2669 | static const char cmd_mode_indicator[] ALIGN1 = "-IR-";
|
---|
[821] | 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 |
|
---|
[1765] | 2702 | ret = snprintf(status_buffer, trunc_at+1,
|
---|
| 2703 | #if ENABLE_FEATURE_VI_READONLY
|
---|
[821] | 2704 | "%c %s%s%s %d/%d %d%%",
|
---|
| 2705 | #else
|
---|
| 2706 | "%c %s%s %d/%d %d%%",
|
---|
| 2707 | #endif
|
---|
[1765] | 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]" : ""),
|
---|
[821] | 2712 | #endif
|
---|
[1765] | 2713 | (file_modified ? " [Modified]" : ""),
|
---|
[821] | 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 ---------------------
|
---|
[1765] | 2734 | static void format_line(char *dest, char *src, int li)
|
---|
[821] | 2735 | {
|
---|
| 2736 | int co;
|
---|
[1765] | 2737 | char c;
|
---|
[821] | 2738 |
|
---|
[1765] | 2739 | for (co = 0; co < MAX_SCR_COLS; co++) {
|
---|
| 2740 | c = ' '; // assume blank
|
---|
[821] | 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;
|
---|
[1765] | 2750 | if ((c & 0x80) && !Isprint(c)) {
|
---|
[821] | 2751 | c = '.';
|
---|
| 2752 | }
|
---|
[1765] | 2753 | if ((unsigned char)(c) < ' ' || c == 0x7f) {
|
---|
[821] | 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++] = '^';
|
---|
[1765] | 2762 | if (c == 0x7f)
|
---|
[821] | 2763 | c = '?';
|
---|
[1765] | 2764 | else
|
---|
[821] | 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;
|
---|
[1765] | 2784 |
|
---|
[821] | 2785 | int li, changed;
|
---|
[1765] | 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
|
---|
[821] | 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
|
---|
[1765] | 2806 | while (tp < end && *tp++ != '\n') /*no-op*/;
|
---|
[821] | 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
|
---|
[1765] | 2819 | for (; cs <= ce; cs++) {
|
---|
[821] | 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) {
|
---|
[1765] | 2837 | re0:
|
---|
[821] | 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 {
|
---|
[1765] | 2856 | #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
[821] | 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;
|
---|
[1765] | 2862 | #else
|
---|
[821] | 2863 | place_cursor(li, cs, FALSE); // use standard ESC sequence
|
---|
[1765] | 2864 | #endif /* FEATURE_VI_OPTIMIZE_CURSOR */
|
---|
[821] | 2865 | }
|
---|
| 2866 |
|
---|
| 2867 | // write line out to terminal
|
---|
| 2868 | {
|
---|
[1765] | 2869 | int nic = ce - cs + 1;
|
---|
| 2870 | char *out = sp + cs;
|
---|
[821] | 2871 |
|
---|
[1765] | 2872 | while (nic-- > 0) {
|
---|
[821] | 2873 | putchar(*out);
|
---|
| 2874 | out++;
|
---|
| 2875 | }
|
---|
| 2876 | }
|
---|
[1765] | 2877 | #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
[821] | 2878 | last_row = li;
|
---|
[1765] | 2879 | #endif
|
---|
[821] | 2880 | }
|
---|
| 2881 | }
|
---|
| 2882 |
|
---|
[1765] | 2883 | #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
|
---|
[821] | 2884 | place_cursor(crow, ccol, (crow == last_row) ? TRUE : FALSE);
|
---|
| 2885 | last_row = crow;
|
---|
| 2886 | #else
|
---|
| 2887 | place_cursor(crow, ccol, FALSE);
|
---|
[1765] | 2888 | #endif
|
---|
[821] | 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 -----------------------------------
|
---|
[1765] | 2916 | static void do_cmd(char c)
|
---|
[821] | 2917 | {
|
---|
[1765] | 2918 | const char *msg;
|
---|
| 2919 | char c1, *p, *q, buf[9], *save_dot;
|
---|
[821] | 2920 | int cnt, i, j, dir, yf;
|
---|
| 2921 |
|
---|
| 2922 | c1 = c; // quiet the compiler
|
---|
| 2923 | cnt = yf = dir = 0; // quiet the compiler
|
---|
[1765] | 2924 | msg = p = q = save_dot = buf; // quiet the compiler
|
---|
[821] | 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
|
---|
[1765] | 2944 | if (c == VI_K_INSERT)
|
---|
| 2945 | goto dc_i;
|
---|
[821] | 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 |
|
---|
[1765] | 2969 | key_cmd_mode:
|
---|
[821] | 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
|
---|
[1765] | 2979 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
[821] | 2980 | case 0x14: // dc4 ctrl-T
|
---|
| 2981 | crashme = (crashme == 0) ? 1 : 0;
|
---|
| 2982 | break;
|
---|
[1765] | 2983 | #endif
|
---|
[821] | 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 | }
|
---|
[1765] | 3022 | ni(buf);
|
---|
[821] | 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;
|
---|
[1765] | 3030 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
[821] | 3031 | case 0x03: // ctrl-C interrupt
|
---|
| 3032 | longjmp(restart, 1);
|
---|
| 3033 | break;
|
---|
| 3034 | case 26: // ctrl-Z suspend
|
---|
| 3035 | suspend_sig(SIGTSTP);
|
---|
| 3036 | break;
|
---|
[1765] | 3037 | #endif
|
---|
[821] | 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)
|
---|
[1765] | 3054 | case 0x7f: // DEL- move left (This may be ERASE char)
|
---|
[821] | 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
|
---|
[1765] | 3073 | mysleep(10);
|
---|
[821] | 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;
|
---|
[1765] | 3107 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
[821] | 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
|
---|
[1765] | 3123 | q = mark[(unsigned char) c1];
|
---|
[821] | 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
|
---|
[1765] | 3160 | if (strchr(p, '\n') != NULL) {
|
---|
[821] | 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;
|
---|
[1765] | 3189 | #endif /* FEATURE_VI_YANKMARK */
|
---|
[821] | 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
|
---|
[1765] | 3223 | if (last_forward_char == 0)
|
---|
| 3224 | break;
|
---|
[821] | 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;
|
---|
[1765] | 3239 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
[821] | 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) {
|
---|
[1765] | 3244 | ioq = ioq_start = xstrdup(last_modifying_cmd);
|
---|
[821] | 3245 | }
|
---|
| 3246 | break;
|
---|
[1765] | 3247 | #endif
|
---|
| 3248 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
[821] | 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"
|
---|
[1765] | 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
|
---|
[821] | 3257 | // there is a new pat
|
---|
| 3258 | free(last_search_pattern);
|
---|
[1765] | 3259 | last_search_pattern = xstrdup(q);
|
---|
[821] | 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
|
---|
[1765] | 3282 | dc3:
|
---|
[821] | 3283 | if (last_search_pattern == 0) {
|
---|
[1765] | 3284 | msg = "No previous regular expression";
|
---|
[821] | 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 | }
|
---|
[1765] | 3295 | dc4:
|
---|
[821] | 3296 | q = char_search(p, last_search_pattern + 1, dir, FULL);
|
---|
| 3297 | if (q != NULL) {
|
---|
| 3298 | dot = q; // good search, update "dot"
|
---|
[1765] | 3299 | msg = "";
|
---|
[821] | 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
|
---|
[1765] | 3310 | msg = "search hit BOTTOM, continuing at TOP";
|
---|
[821] | 3311 | if (dir == BACK) {
|
---|
[1765] | 3312 | msg = "search hit TOP, continuing at BOTTOM";
|
---|
[821] | 3313 | }
|
---|
| 3314 | } else {
|
---|
[1765] | 3315 | msg = "Pattern not found";
|
---|
[821] | 3316 | }
|
---|
[1765] | 3317 | dc2:
|
---|
| 3318 | if (*msg)
|
---|
| 3319 | psbs("%s", msg);
|
---|
[821] | 3320 | break;
|
---|
| 3321 | case '{': // {- move backward paragraph
|
---|
[1765] | 3322 | q = char_search(dot, "\n\n", BACK, FULL);
|
---|
[821] | 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
|
---|
[1765] | 3328 | q = char_search(dot, "\n\n", FORWARD, FULL);
|
---|
[821] | 3329 | if (q != NULL) { // found blank line
|
---|
| 3330 | dot = next_line(q); // move to next blank line
|
---|
| 3331 | }
|
---|
| 3332 | break;
|
---|
[1765] | 3333 | #endif /* FEATURE_VI_SEARCH */
|
---|
[821] | 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
|
---|
[1765] | 3351 | p = get_input_line(":"); // get input line- use "status line"
|
---|
| 3352 | #if ENABLE_FEATURE_VI_COLON
|
---|
[821] | 3353 | colon(p); // execute the command
|
---|
[1765] | 3354 | #else
|
---|
[821] | 3355 | if (*p == ':')
|
---|
| 3356 | p++; // move past the ':'
|
---|
[1765] | 3357 | cnt = strlen(p);
|
---|
[821] | 3358 | if (cnt <= 0)
|
---|
| 3359 | break;
|
---|
[1765] | 3360 | if (strncasecmp(p, "quit", cnt) == 0
|
---|
| 3361 | || strncasecmp(p, "q!", cnt) == 0 // delete lines
|
---|
| 3362 | ) {
|
---|
[821] | 3363 | if (file_modified && p[1] != '!') {
|
---|
| 3364 | psbs("No write since last change (:quit! overrides)");
|
---|
| 3365 | } else {
|
---|
| 3366 | editing = 0;
|
---|
| 3367 | }
|
---|
[1765] | 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);
|
---|
[821] | 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;
|
---|
[1765] | 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 | ) {
|
---|
[821] | 3384 | editing = 0;
|
---|
| 3385 | }
|
---|
| 3386 | }
|
---|
[1765] | 3387 | } else if (strncasecmp(p, "file", cnt) == 0) {
|
---|
[821] | 3388 | last_status_cksum = 0; // force status update
|
---|
[1765] | 3389 | } else if (sscanf(p, "%d", &j) > 0) {
|
---|
[821] | 3390 | dot = find_line(j); // go to line # j
|
---|
| 3391 | dot_skip_over_ws();
|
---|
| 3392 | } else { // unrecognised cmd
|
---|
[1765] | 3393 | ni(p);
|
---|
[821] | 3394 | }
|
---|
[1765] | 3395 | #endif /* !FEATURE_VI_COLON */
|
---|
[821] | 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);
|
---|
[1765] | 3402 | yank_delete(p, q, 1, YANKONLY); // save copy before change
|
---|
[821] | 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
|
---|
[1765] | 3411 | text_hole_delete(p, p);
|
---|
[821] | 3412 | } else if (*p == ' ') {
|
---|
| 3413 | // we should be calculating columns, not just SPACE
|
---|
| 3414 | for (j = 0; *p == ' ' && j < tabstop; j++) {
|
---|
[1765] | 3415 | text_hole_delete(p, p);
|
---|
[821] | 3416 | }
|
---|
| 3417 | }
|
---|
| 3418 | } else if (c == '>') {
|
---|
| 3419 | // shift right -- add tab or 8 spaces
|
---|
[1765] | 3420 | char_insert(p, '\t');
|
---|
[821] | 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
|
---|
[1765] | 3459 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
[821] | 3460 | if (c == 'D')
|
---|
| 3461 | end_cmd_q(); // stop adding to q
|
---|
[1765] | 3462 | #endif
|
---|
[821] | 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
|
---|
[1765] | 3487 | dc_i:
|
---|
[821] | 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++;
|
---|
[1765] | 3498 | while (isblank(*dot)) { // delete leading WS
|
---|
[821] | 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
|
---|
[1765] | 3536 | dc5:
|
---|
[821] | 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) {
|
---|
[1765] | 3565 | if (ENABLE_FEATURE_VI_READONLY && readonly_mode) {
|
---|
| 3566 | psbs("\"%s\" File is read only", current_filename);
|
---|
| 3567 | break;
|
---|
[821] | 3568 | }
|
---|
[1765] | 3569 | cnt = file_write(current_filename, text, end - 1);
|
---|
[821] | 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
|
---|
[1765] | 3606 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
[821] | 3607 | case 'y': // y- yank something
|
---|
| 3608 | case 'Y': // Y- Yank a line
|
---|
[1765] | 3609 | #endif
|
---|
[821] | 3610 | yf = YANKDEL; // assume either "c" or "d"
|
---|
[1765] | 3611 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
[821] | 3612 | if (c == 'y' || c == 'Y')
|
---|
| 3613 | yf = YANKONLY;
|
---|
[1765] | 3614 | #endif
|
---|
[821] | 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
|
---|
[1765] | 3624 | while (isblank(*q)) {
|
---|
[821] | 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') {
|
---|
[1765] | 3655 | strcpy(buf, "Change");
|
---|
[821] | 3656 | goto dc_i; // start inserting
|
---|
| 3657 | }
|
---|
| 3658 | if (c == 'd') {
|
---|
[1765] | 3659 | strcpy(buf, "Delete");
|
---|
[821] | 3660 | }
|
---|
[1765] | 3661 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
[821] | 3662 | if (c == 'y' || c == 'Y') {
|
---|
[1765] | 3663 | strcpy(buf, "Yank");
|
---|
[821] | 3664 | }
|
---|
| 3665 | p = reg[YDreg];
|
---|
[1765] | 3666 | q = p + strlen(p);
|
---|
[821] | 3667 | for (cnt = 0; p <= q; p++) {
|
---|
| 3668 | if (*p == '\n')
|
---|
| 3669 | cnt++;
|
---|
| 3670 | }
|
---|
| 3671 | psb("%s %d lines (%d chars) using [%c]",
|
---|
[1765] | 3672 | buf, cnt, strlen(reg[YDreg]), what_reg());
|
---|
| 3673 | #endif
|
---|
[821] | 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 |
|
---|
[1765] | 3762 | dc1:
|
---|
[821] | 3763 | // if text[] just became empty, add back an empty line
|
---|
| 3764 | if (end == text) {
|
---|
[1765] | 3765 | char_insert(text, '\n'); // start empty buf with dummy line
|
---|
[821] | 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 | }
|
---|
[1765] | 3772 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
[821] | 3773 | check_context(c); // update the current context
|
---|
[1765] | 3774 | #endif
|
---|
[821] | 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 |
|
---|
[1765] | 3784 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
[821] | 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;
|
---|
[1765] | 3793 | const char chars[20] = "\t012345 abcdABCD-=.$";
|
---|
| 3794 | const char *const words[20] = {
|
---|
| 3795 | "this", "is", "a", "test",
|
---|
[821] | 3796 | "broadcast", "the", "emergency", "of",
|
---|
| 3797 | "system", "quick", "brown", "fox",
|
---|
| 3798 | "jumped", "over", "lazy", "dogs",
|
---|
| 3799 | "back", "January", "Febuary", "March"
|
---|
| 3800 | };
|
---|
[1765] | 3801 | const char *const lines[20] = {
|
---|
[821] | 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;
|
---|
[1765] | 3859 | cd0:
|
---|
[821] | 3860 | startrbi = rbi = 0;
|
---|
| 3861 | sleeptime = 0; // how long to pause between commands
|
---|
[1765] | 3862 | memset(readbuffer, '\0', MAX_LINELEN); // clear the read buffer
|
---|
[821] | 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
|
---|
[1765] | 3921 | strcat(readbuffer, words[(int) lrand48() % 20]);
|
---|
| 3922 | strcat(readbuffer, " ");
|
---|
[821] | 3923 | sleeptime = 0; // how fast to type
|
---|
| 3924 | } else if (thing == 2) { // insert lines
|
---|
[1765] | 3925 | strcat(readbuffer, lines[(int) lrand48() % 20]);
|
---|
[821] | 3926 | sleeptime = 0; // how fast to type
|
---|
| 3927 | } else { // insert multi-lines
|
---|
[1765] | 3928 | strcat(readbuffer, multilines[(int) lrand48() % 20]);
|
---|
[821] | 3929 | sleeptime = 0; // how fast to type
|
---|
| 3930 | }
|
---|
| 3931 | }
|
---|
[1765] | 3932 | strcat(readbuffer, "\033");
|
---|
[821] | 3933 | }
|
---|
| 3934 | readed_for_parse = strlen(readbuffer);
|
---|
[1765] | 3935 | cd1:
|
---|
[821] | 3936 | totalcmds++;
|
---|
| 3937 | if (sleeptime > 0)
|
---|
[1765] | 3938 | mysleep(sleeptime); // sleep 1/100 sec
|
---|
[821] | 3939 | }
|
---|
| 3940 |
|
---|
| 3941 | // test to see if there are any errors
|
---|
| 3942 | static void crash_test()
|
---|
| 3943 | {
|
---|
| 3944 | static time_t oldtim;
|
---|
[1765] | 3945 |
|
---|
[821] | 3946 | time_t tim;
|
---|
[1765] | 3947 | char d[2], msg[MAX_LINELEN];
|
---|
[821] | 3948 |
|
---|
| 3949 | msg[0] = '\0';
|
---|
| 3950 | if (end < text) {
|
---|
[1765] | 3951 | strcat(msg, "end<text ");
|
---|
[821] | 3952 | }
|
---|
| 3953 | if (end > textend) {
|
---|
[1765] | 3954 | strcat(msg, "end>textend ");
|
---|
[821] | 3955 | }
|
---|
| 3956 | if (dot < text) {
|
---|
[1765] | 3957 | strcat(msg, "dot<text ");
|
---|
[821] | 3958 | }
|
---|
| 3959 | if (dot > end) {
|
---|
[1765] | 3960 | strcat(msg, "dot>end ");
|
---|
[821] | 3961 | }
|
---|
| 3962 | if (screenbegin < text) {
|
---|
[1765] | 3963 | strcat(msg, "screenbegin<text ");
|
---|
[821] | 3964 | }
|
---|
| 3965 | if (screenbegin > end - 1) {
|
---|
[1765] | 3966 | strcat(msg, "screenbegin>end-1 ");
|
---|
[821] | 3967 | }
|
---|
| 3968 |
|
---|
[1765] | 3969 | if (msg[0]) {
|
---|
[821] | 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)) {
|
---|
[1765] | 3982 | sprintf(status_buffer,
|
---|
[821] | 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 | }
|
---|
[1765] | 3988 | #endif
|
---|