1 /* vi: set sw=4 ts=4: */
3 * tiny vi.c: A small 'vi' clone
4 * Copyright (C) 2000, 2001 Sterling Huxley <sterling@europa.com>
6 * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
12 * $HOME/.exrc and ./.exrc
13 * add magic to search /foo.*bar
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"
26 /* the CRASHME code is unmaintained, and doesn't currently build */
27 #define ENABLE_FEATURE_VI_CRASHME 0
30 #if ENABLE_LOCALE_SUPPORT
32 #if ENABLE_FEATURE_VI_8BIT
33 #define Isprint(c) isprint(c)
35 #define Isprint(c) (isprint(c) && (unsigned char)(c) < 0x7f)
40 /* 0x9b is Meta-ESC */
41 #if ENABLE_FEATURE_VI_8BIT
42 #define Isprint(c) ((unsigned char)(c) >= ' ' && (c) != 0x7f && (unsigned char)(c) != 0x9b)
44 #define Isprint(c) ((unsigned char)(c) >= ' ' && (unsigned char)(c) < 0x7f)
51 MAX_TABSTOP = 32, // sanity limit
52 // User input len. Need not be extra big.
53 // Lines in file being edited *can* be bigger than this.
55 // Sanity limits. We have only one buffer of this size.
56 MAX_SCR_COLS = CONFIG_FEATURE_VI_MAX_LEN,
57 MAX_SCR_ROWS = CONFIG_FEATURE_VI_MAX_LEN,
60 // Misc. non-Ascii keys that report an escape sequence
61 #define VI_K_UP (char)128 // cursor key Up
62 #define VI_K_DOWN (char)129 // cursor key Down
63 #define VI_K_RIGHT (char)130 // Cursor Key Right
64 #define VI_K_LEFT (char)131 // cursor key Left
65 #define VI_K_HOME (char)132 // Cursor Key Home
66 #define VI_K_END (char)133 // Cursor Key End
67 #define VI_K_INSERT (char)134 // Cursor Key Insert
68 #define VI_K_DELETE (char)135 // Cursor Key Insert
69 #define VI_K_PAGEUP (char)136 // Cursor Key Page Up
70 #define VI_K_PAGEDOWN (char)137 // Cursor Key Page Down
71 #define VI_K_FUN1 (char)138 // Function Key F1
72 #define VI_K_FUN2 (char)139 // Function Key F2
73 #define VI_K_FUN3 (char)140 // Function Key F3
74 #define VI_K_FUN4 (char)141 // Function Key F4
75 #define VI_K_FUN5 (char)142 // Function Key F5
76 #define VI_K_FUN6 (char)143 // Function Key F6
77 #define VI_K_FUN7 (char)144 // Function Key F7
78 #define VI_K_FUN8 (char)145 // Function Key F8
79 #define VI_K_FUN9 (char)146 // Function Key F9
80 #define VI_K_FUN10 (char)147 // Function Key F10
81 #define VI_K_FUN11 (char)148 // Function Key F11
82 #define VI_K_FUN12 (char)149 // Function Key F12
84 /* vt102 typical ESC sequence */
85 /* terminal standout start/normal ESC sequence */
86 static const char SOs[] ALIGN1 = "\033[7m";
87 static const char SOn[] ALIGN1 = "\033[0m";
88 /* terminal bell sequence */
89 static const char bell[] ALIGN1 = "\007";
90 /* Clear-end-of-line and Clear-end-of-screen ESC sequence */
91 static const char Ceol[] ALIGN1 = "\033[0K";
92 static const char Ceos[] ALIGN1 = "\033[0J";
93 /* Cursor motion arbitrary destination ESC sequence */
94 static const char CMrc[] ALIGN1 = "\033[%d;%dH";
95 /* Cursor motion up and down ESC sequence */
96 static const char CMup[] ALIGN1 = "\033[A";
97 static const char CMdown[] ALIGN1 = "\n";
103 FORWARD = 1, // code depends on "1" for array index
104 BACK = -1, // code depends on "-1" for array index
105 LIMITED = 0, // how much of text[] in char_search
106 FULL = 1, // how much of text[] in char_search
108 S_BEFORE_WS = 1, // used in skip_thing() for moving "dot"
109 S_TO_WS = 2, // used in skip_thing() for moving "dot"
110 S_OVER_WS = 3, // used in skip_thing() for moving "dot"
111 S_END_PUNCT = 4, // used in skip_thing() for moving "dot"
112 S_END_ALNUM = 5, // used in skip_thing() for moving "dot"
116 /* vi.c expects chars to be unsigned. */
117 /* busybox build system provides that, but it's better */
118 /* to audit and fix the source */
121 /* many references - keep near the top of globals */
122 char *text, *end; // pointers to the user data in memory
123 char *dot; // where all the action takes place
124 int text_size; // size of the allocated buffer
128 #define VI_AUTOINDENT 1
129 #define VI_SHOWMATCH 2
130 #define VI_IGNORECASE 4
131 #define VI_ERR_METHOD 8
132 #define autoindent (vi_setops & VI_AUTOINDENT)
133 #define showmatch (vi_setops & VI_SHOWMATCH )
134 #define ignorecase (vi_setops & VI_IGNORECASE)
135 /* indicate error with beep or flash */
136 #define err_method (vi_setops & VI_ERR_METHOD)
138 #if ENABLE_FEATURE_VI_READONLY
139 smallint readonly_mode;
140 #define SET_READONLY_FILE(flags) ((flags) |= 0x01)
141 #define SET_READONLY_MODE(flags) ((flags) |= 0x02)
142 #define UNSET_READONLY_FILE(flags) ((flags) &= 0xfe)
144 #define SET_READONLY_FILE(flags) ((void)0)
145 #define SET_READONLY_MODE(flags) ((void)0)
146 #define UNSET_READONLY_FILE(flags) ((void)0)
149 smallint editing; // >0 while we are editing a file
150 // [code audit says "can be 0, 1 or 2 only"]
151 smallint cmd_mode; // 0=command 1=insert 2=replace
152 int file_modified; // buffer contents changed (counter, not flag!)
153 int last_file_modified; // = -1;
154 int fn_start; // index of first cmd line file name
155 int save_argc; // how many file names on cmd line
156 int cmdcnt; // repetition count
157 unsigned rows, columns; // the terminal screen is this size
158 int crow, ccol; // cursor is on Crow x Ccol
159 int offset; // chars scrolled off the screen to the left
160 int have_status_msg; // is default edit status needed?
161 // [don't make smallint!]
162 int last_status_cksum; // hash of current status line
163 char *current_filename;
164 char *screenbegin; // index into text[], of top line on the screen
165 char *screen; // pointer to the virtual screen buffer
166 int screensize; // and its size
168 char erase_char; // the users erase character
169 char last_input_char; // last char read from user
170 char last_forward_char; // last char searched for with 'f'
172 #if ENABLE_FEATURE_VI_DOT_CMD
173 smallint adding2q; // are we currently adding user input to q
174 int lmc_len; // length of last_modifying_cmd
175 char *ioq, *ioq_start; // pointer to string for get_one_char to "read"
177 #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
178 int last_row; // where the cursor was last moved to
180 #if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
183 #if ENABLE_FEATURE_VI_DOT_CMD || ENABLE_FEATURE_VI_YANKMARK
184 char *modifying_cmds; // cmds that modify text[]
186 #if ENABLE_FEATURE_VI_SEARCH
187 char *last_search_pattern; // last pattern from a '/' or '?' search
191 #if ENABLE_FEATURE_VI_YANKMARK
192 char *edit_file__cur_line;
194 int refresh__old_offset;
195 int format_edit_status__tot;
197 /* a few references only */
198 #if ENABLE_FEATURE_VI_YANKMARK
199 int YDreg, Ureg; // default delete register and orig line for "U"
200 char *reg[28]; // named register a-z, "D", and "U" 0-25,26,27
201 char *mark[28]; // user marks points somewhere in text[]- a-z and previous context ''
202 char *context_start, *context_end;
204 #if ENABLE_FEATURE_VI_USE_SIGNALS
205 sigjmp_buf restart; // catch_sig()
207 struct termios term_orig, term_vi; // remember what the cooked mode was
208 #if ENABLE_FEATURE_VI_COLON
209 char *initial_cmds[3]; // currently 2 entries, NULL terminated
211 // Should be just enough to hold a key sequence,
212 // but CRASHME mode uses it as generated command buffer too
213 #if ENABLE_FEATURE_VI_CRASHME
214 char readbuffer[128];
218 #define STATUS_BUFFER_LEN 200
219 char status_buffer[STATUS_BUFFER_LEN]; // messages to the user
220 #if ENABLE_FEATURE_VI_DOT_CMD
221 char last_modifying_cmd[MAX_INPUT_LEN]; // last modifying cmd for "."
223 char get_input_line__buf[MAX_INPUT_LEN]; /* former static */
225 char scr_out_buf[MAX_SCR_COLS + MAX_TABSTOP * 2];
227 #define G (*ptr_to_globals)
228 #define text (G.text )
229 #define text_size (G.text_size )
234 #define vi_setops (G.vi_setops )
235 #define editing (G.editing )
236 #define cmd_mode (G.cmd_mode )
237 #define file_modified (G.file_modified )
238 #define last_file_modified (G.last_file_modified )
239 #define fn_start (G.fn_start )
240 #define save_argc (G.save_argc )
241 #define cmdcnt (G.cmdcnt )
242 #define rows (G.rows )
243 #define columns (G.columns )
244 #define crow (G.crow )
245 #define ccol (G.ccol )
246 #define offset (G.offset )
247 #define status_buffer (G.status_buffer )
248 #define have_status_msg (G.have_status_msg )
249 #define last_status_cksum (G.last_status_cksum )
250 #define current_filename (G.current_filename )
251 #define screen (G.screen )
252 #define screensize (G.screensize )
253 #define screenbegin (G.screenbegin )
254 #define tabstop (G.tabstop )
255 #define erase_char (G.erase_char )
256 #define last_input_char (G.last_input_char )
257 #define last_forward_char (G.last_forward_char )
258 #if ENABLE_FEATURE_VI_READONLY
259 #define readonly_mode (G.readonly_mode )
261 #define readonly_mode 0
263 #define adding2q (G.adding2q )
264 #define lmc_len (G.lmc_len )
266 #define ioq_start (G.ioq_start )
267 #define last_row (G.last_row )
268 #define my_pid (G.my_pid )
269 #define modifying_cmds (G.modifying_cmds )
270 #define last_search_pattern (G.last_search_pattern)
271 #define chars_to_parse (G.chars_to_parse )
273 #define edit_file__cur_line (G.edit_file__cur_line)
274 #define refresh__old_offset (G.refresh__old_offset)
275 #define format_edit_status__tot (G.format_edit_status__tot)
277 #define YDreg (G.YDreg )
278 #define Ureg (G.Ureg )
279 #define mark (G.mark )
280 #define context_start (G.context_start )
281 #define context_end (G.context_end )
282 #define restart (G.restart )
283 #define term_orig (G.term_orig )
284 #define term_vi (G.term_vi )
285 #define initial_cmds (G.initial_cmds )
286 #define readbuffer (G.readbuffer )
287 #define scr_out_buf (G.scr_out_buf )
288 #define last_modifying_cmd (G.last_modifying_cmd )
289 #define get_input_line__buf (G.get_input_line__buf)
291 #define INIT_G() do { \
292 SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
293 last_file_modified = -1; \
297 static int init_text_buffer(char *); // init from file or create new
298 static void edit_file(char *); // edit one file
299 static void do_cmd(char); // execute a command
300 static int next_tabstop(int);
301 static void sync_cursor(char *, int *, int *); // synchronize the screen cursor to dot
302 static char *begin_line(char *); // return pointer to cur line B-o-l
303 static char *end_line(char *); // return pointer to cur line E-o-l
304 static char *prev_line(char *); // return pointer to prev line B-o-l
305 static char *next_line(char *); // return pointer to next line B-o-l
306 static char *end_screen(void); // get pointer to last char on screen
307 static int count_lines(char *, char *); // count line from start to stop
308 static char *find_line(int); // find begining of line #li
309 static char *move_to_col(char *, int); // move "p" to column l
310 static void dot_left(void); // move dot left- dont leave line
311 static void dot_right(void); // move dot right- dont leave line
312 static void dot_begin(void); // move dot to B-o-l
313 static void dot_end(void); // move dot to E-o-l
314 static void dot_next(void); // move dot to next line B-o-l
315 static void dot_prev(void); // move dot to prev line B-o-l
316 static void dot_scroll(int, int); // move the screen up or down
317 static void dot_skip_over_ws(void); // move dot pat WS
318 static void dot_delete(void); // delete the char at 'dot'
319 static char *bound_dot(char *); // make sure text[0] <= P < "end"
320 static char *new_screen(int, int); // malloc virtual screen memory
321 static char *char_insert(char *, char); // insert the char c at 'p'
322 static char *stupid_insert(char *, char); // stupidly insert the char c at 'p'
323 static int find_range(char **, char **, char); // return pointers for an object
324 static int st_test(char *, int, int, char *); // helper for skip_thing()
325 static char *skip_thing(char *, int, int, int); // skip some object
326 static char *find_pair(char *, char); // find matching pair () [] {}
327 static char *text_hole_delete(char *, char *); // at "p", delete a 'size' byte hole
328 static char *text_hole_make(char *, int); // at "p", make a 'size' byte hole
329 static char *yank_delete(char *, char *, int, int); // yank text[] into register then delete
330 static void show_help(void); // display some help info
331 static void rawmode(void); // set "raw" mode on tty
332 static void cookmode(void); // return to "cooked" mode on tty
333 // sleep for 'h' 1/100 seconds, return 1/0 if stdin is (ready for read)/(not ready)
334 static int mysleep(int);
335 static char readit(void); // read (maybe cursor) key from stdin
336 static char get_one_char(void); // read 1 char from stdin
337 static int file_size(const char *); // what is the byte size of "fn"
338 #if ENABLE_FEATURE_VI_READONLY
339 static int file_insert(const char *, char *, int);
341 static int file_insert(const char *, char *);
343 static int file_write(char *, char *, char *);
344 #if !ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
345 #define place_cursor(a, b, optimize) place_cursor(a, b)
347 static void place_cursor(int, int, int);
348 static void screen_erase(void);
349 static void clear_to_eol(void);
350 static void clear_to_eos(void);
351 static void go_bottom_and_clear_to_eol(void);
352 static void standout_start(void); // send "start reverse video" sequence
353 static void standout_end(void); // send "end reverse video" sequence
354 static void flash(int); // flash the terminal screen
355 static void show_status_line(void); // put a message on the bottom line
356 static void status_line(const char *, ...); // print to status buf
357 static void status_line_bold(const char *, ...);
358 static void not_implemented(const char *); // display "Not implemented" message
359 static int format_edit_status(void); // format file status on status line
360 static void redraw(int); // force a full screen refresh
361 static char* format_line(char* /*, int*/);
362 static void refresh(int); // update the terminal from screen[]
364 static void Indicate_Error(void); // use flash or beep to indicate error
365 #define indicate_error(c) Indicate_Error()
366 static void Hit_Return(void);
368 #if ENABLE_FEATURE_VI_SEARCH
369 static char *char_search(char *, const char *, int, int); // search for pattern starting at p
370 static int mycmp(const char *, const char *, int); // string cmp based in "ignorecase"
372 #if ENABLE_FEATURE_VI_COLON
373 static char *get_one_address(char *, int *); // get colon addr, if present
374 static char *get_address(char *, int *, int *); // get two colon addrs, if present
375 static void colon(char *); // execute the "colon" mode cmds
377 #if ENABLE_FEATURE_VI_USE_SIGNALS
378 static void winch_sig(int); // catch window size changes
379 static void suspend_sig(int); // catch ctrl-Z
380 static void catch_sig(int); // catch ctrl-C and alarm time-outs
382 #if ENABLE_FEATURE_VI_DOT_CMD
383 static void start_new_cmd_q(char); // new queue for command
384 static void end_cmd_q(void); // stop saving input chars
386 #define end_cmd_q() ((void)0)
388 #if ENABLE_FEATURE_VI_SETOPTS
389 static void showmatching(char *); // show the matching pair () [] {}
391 #if ENABLE_FEATURE_VI_YANKMARK || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) || ENABLE_FEATURE_VI_CRASHME
392 static char *string_insert(char *, char *); // insert the string at 'p'
394 #if ENABLE_FEATURE_VI_YANKMARK
395 static char *text_yank(char *, char *, int); // save copy of "p" into a register
396 static char what_reg(void); // what is letter of current YDreg
397 static void check_context(char); // remember context for '' command
399 #if ENABLE_FEATURE_VI_CRASHME
400 static void crash_dummy();
401 static void crash_test();
402 static int crashme = 0;
406 static void write1(const char *out)
411 int vi_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
412 int vi_main(int argc, char **argv)
418 #if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
421 #if ENABLE_FEATURE_VI_CRASHME
422 srand((long) my_pid);
424 #ifdef NO_SUCH_APPLET_YET
425 /* If we aren't "vi", we are "view" */
426 if (ENABLE_FEATURE_VI_READONLY && applet_name[2]) {
427 SET_READONLY_MODE(readonly_mode);
431 vi_setops = VI_AUTOINDENT | VI_SHOWMATCH | VI_IGNORECASE;
432 #if ENABLE_FEATURE_VI_DOT_CMD || ENABLE_FEATURE_VI_YANKMARK
433 modifying_cmds = (char *) "aAcCdDiIJoOpPrRsxX<>~"; // cmds modifying text[]
436 // 1- process $HOME/.exrc file (not inplemented yet)
437 // 2- process EXINIT variable from environment
438 // 3- process command line args
439 #if ENABLE_FEATURE_VI_COLON
441 char *p = getenv("EXINIT");
443 initial_cmds[0] = xstrndup(p, MAX_INPUT_LEN);
446 while ((c = getopt(argc, argv, "hCRH" USE_FEATURE_VI_COLON("c:"))) != -1) {
448 #if ENABLE_FEATURE_VI_CRASHME
453 #if ENABLE_FEATURE_VI_READONLY
454 case 'R': // Read-only flag
455 SET_READONLY_MODE(readonly_mode);
458 #if ENABLE_FEATURE_VI_COLON
459 case 'c': // cmd line vi command
461 initial_cmds[initial_cmds[0] != 0] = xstrndup(optarg, MAX_INPUT_LEN);
473 // The argv array can be used by the ":next" and ":rewind" commands
475 fn_start = optind; // remember first file name for :next and :rew
478 //----- This is the main file handling loop --------------
479 if (optind >= argc) {
482 for (; optind < argc; optind++) {
483 edit_file(argv[optind]);
486 //-----------------------------------------------------------
491 /* read text from file or create an empty buf */
492 /* will also update current_filename */
493 static int init_text_buffer(char *fn)
496 int size = file_size(fn); // file size. -1 means does not exist.
498 /* allocate/reallocate text buffer */
500 text_size = size + 10240;
501 screenbegin = dot = end = text = xzalloc(text_size);
503 if (fn != current_filename) {
504 free(current_filename);
505 current_filename = xstrdup(fn);
508 // file dont exist. Start empty buf with dummy line
509 char_insert(text, '\n');
512 rc = file_insert(fn, text
513 USE_FEATURE_VI_READONLY(, 1));
516 last_file_modified = -1;
517 #if ENABLE_FEATURE_VI_YANKMARK
518 /* init the marks. */
519 memset(mark, 0, sizeof(mark));
524 static void edit_file(char *fn)
526 #if ENABLE_FEATURE_VI_YANKMARK
527 #define cur_line edit_file__cur_line
531 #if ENABLE_FEATURE_VI_USE_SIGNALS
535 editing = 1; // 0 = exit, 1 = one file, 2 = multiple files
540 if (ENABLE_FEATURE_VI_WIN_RESIZE) {
541 get_terminal_width_height(0, &columns, &rows);
542 if (rows > MAX_SCR_ROWS) rows = MAX_SCR_ROWS;
543 if (columns > MAX_SCR_COLS) columns = MAX_SCR_COLS;
545 new_screen(rows, columns); // get memory for virtual screen
546 init_text_buffer(fn);
548 #if ENABLE_FEATURE_VI_YANKMARK
549 YDreg = 26; // default Yank/Delete reg
550 Ureg = 27; // hold orig line for "U" cmd
551 mark[26] = mark[27] = text; // init "previous context"
554 last_forward_char = last_input_char = '\0';
558 #if ENABLE_FEATURE_VI_USE_SIGNALS
560 signal(SIGWINCH, winch_sig);
561 signal(SIGTSTP, suspend_sig);
562 sig = sigsetjmp(restart, 1);
564 screenbegin = dot = text;
568 cmd_mode = 0; // 0=command 1=insert 2='R'eplace
571 offset = 0; // no horizontal offset
573 #if ENABLE_FEATURE_VI_DOT_CMD
575 ioq = ioq_start = NULL;
580 #if ENABLE_FEATURE_VI_COLON
585 while ((p = initial_cmds[n])) {
595 free(initial_cmds[n]);
596 initial_cmds[n] = NULL;
601 redraw(FALSE); // dont force every col re-draw
602 //------This is the main Vi cmd handling loop -----------------------
603 while (editing > 0) {
604 #if ENABLE_FEATURE_VI_CRASHME
606 if ((end - text) > 1) {
607 crash_dummy(); // generate a random command
610 dot = string_insert(text, "\n\n##### Ran out of text to work on. #####\n\n"); // insert the string
615 last_input_char = c = get_one_char(); // get a cmd from user
616 #if ENABLE_FEATURE_VI_YANKMARK
617 // save a copy of the current line- for the 'U" command
618 if (begin_line(dot) != cur_line) {
619 cur_line = begin_line(dot);
620 text_yank(begin_line(dot), end_line(dot), Ureg);
623 #if ENABLE_FEATURE_VI_DOT_CMD
624 // These are commands that change text[].
625 // Remember the input for the "." command
626 if (!adding2q && ioq_start == NULL
627 && c != '\0' && strchr(modifying_cmds, c)
632 do_cmd(c); // execute the user command
634 // poll to see if there is input already waiting. if we are
635 // not able to display output fast enough to keep up, skip
636 // the display update until we catch up with input.
637 if (mysleep(0) == 0) {
638 // no input pending- so update output
642 #if ENABLE_FEATURE_VI_CRASHME
644 crash_test(); // test editor variables
647 //-------------------------------------------------------------------
649 go_bottom_and_clear_to_eol();
654 //----- The Colon commands -------------------------------------
655 #if ENABLE_FEATURE_VI_COLON
656 static char *get_one_address(char *p, int *addr) // get colon addr, if present
660 USE_FEATURE_VI_YANKMARK(char c;)
661 USE_FEATURE_VI_SEARCH(char *pat;)
663 *addr = -1; // assume no addr
664 if (*p == '.') { // the current line
667 *addr = count_lines(text, q);
669 #if ENABLE_FEATURE_VI_YANKMARK
670 else if (*p == '\'') { // is this a mark addr
674 if (c >= 'a' && c <= 'z') {
677 q = mark[(unsigned char) c];
678 if (q != NULL) { // is mark valid
679 *addr = count_lines(text, q); // count lines
684 #if ENABLE_FEATURE_VI_SEARCH
685 else if (*p == '/') { // a search pattern
686 q = strchrnul(++p, '/');
687 pat = xstrndup(p, q - p); // save copy of pattern
691 q = char_search(dot, pat, FORWARD, FULL);
693 *addr = count_lines(text, q);
698 else if (*p == '$') { // the last line in file
700 q = begin_line(end - 1);
701 *addr = count_lines(text, q);
702 } else if (isdigit(*p)) { // specific line number
703 sscanf(p, "%d%n", addr, &st);
706 // unrecognised address - assume -1
712 static char *get_address(char *p, int *b, int *e) // get two colon addrs, if present
714 //----- get the address' i.e., 1,3 'a,'b -----
715 // get FIRST addr, if present
717 p++; // skip over leading spaces
718 if (*p == '%') { // alias for 1,$
721 *e = count_lines(text, end-1);
724 p = get_one_address(p, b);
727 if (*p == ',') { // is there a address separator
731 // get SECOND addr, if present
732 p = get_one_address(p, e);
736 p++; // skip over trailing spaces
740 #if ENABLE_FEATURE_VI_SET && ENABLE_FEATURE_VI_SETOPTS
741 static void setops(const char *args, const char *opname, int flg_no,
742 const char *short_opname, int opt)
744 const char *a = args + flg_no;
745 int l = strlen(opname) - 1; /* opname have + ' ' */
747 if (strncasecmp(a, opname, l) == 0
748 || strncasecmp(a, short_opname, 2) == 0
758 // buf must be no longer than MAX_INPUT_LEN!
759 static void colon(char *buf)
761 char c, *orig_buf, *buf1, *q, *r;
762 char *fn, cmd[MAX_INPUT_LEN], args[MAX_INPUT_LEN];
763 int i, l, li, ch, b, e;
764 int useforce, forced = FALSE;
766 // :3154 // if (-e line 3154) goto it else stay put
767 // :4,33w! foo // write a portion of buffer to file "foo"
768 // :w // write all of buffer to current file
770 // :q! // quit- dont care about modified file
771 // :'a,'z!sort -u // filter block through sort
772 // :'f // goto mark "f"
773 // :'fl // list literal the mark "f" line
774 // :.r bar // read file "bar" into buffer before dot
775 // :/123/,/abc/d // delete lines from "123" line to "abc" line
776 // :/xyz/ // goto the "xyz" line
777 // :s/find/replace/ // substitute pattern "find" with "replace"
778 // :!<cmd> // run <cmd> then return
784 buf++; // move past the ':'
788 q = text; // assume 1,$ for the range
790 li = count_lines(text, end - 1);
791 fn = current_filename;
793 // look for optional address(es) :. :1 :1,9 :'q,'a :%
794 buf = get_address(buf, &b, &e);
796 // remember orig command line
799 // get the COMMAND into cmd[]
801 while (*buf != '\0') {
808 while (isblank(*buf))
812 buf1 = last_char_is(cmd, '!');
815 *buf1 = '\0'; // get rid of !
818 // if there is only one addr, then the addr
819 // is the line number of the single line the
820 // user wants. So, reset the end
821 // pointer to point at end of the "b" line
822 q = find_line(b); // what line is #b
827 // we were given two addrs. change the
828 // end pointer to the addr given by user.
829 r = find_line(e); // what line is #e
833 // ------------ now look for the command ------------
835 if (i == 0) { // :123CR goto line #123
837 dot = find_line(b); // what line is #b
841 #if ENABLE_FEATURE_ALLOW_EXEC
842 else if (strncmp(cmd, "!", 1) == 0) { // run a cmd
844 // :!ls run the <cmd>
845 go_bottom_and_clear_to_eol();
847 retcode = system(orig_buf + 1); // run the cmd
849 printf("\nshell returned %i\n\n", retcode);
851 Hit_Return(); // let user see results
854 else if (strncmp(cmd, "=", i) == 0) { // where is the address
855 if (b < 0) { // no addr given- use defaults
856 b = e = count_lines(text, dot);
858 status_line("%d", b);
859 } else if (strncasecmp(cmd, "delete", i) == 0) { // delete lines
860 if (b < 0) { // no addr given- use defaults
861 q = begin_line(dot); // assume .,. for the range
864 dot = yank_delete(q, r, 1, YANKDEL); // save, then delete lines
866 } else if (strncasecmp(cmd, "edit", i) == 0) { // Edit a file
867 // don't edit, if the current file has been modified
868 if (file_modified && !useforce) {
869 status_line_bold("No write since last change (:edit! overrides)");
873 // the user supplied a file name
875 } else if (current_filename && current_filename[0]) {
876 // no user supplied name- use the current filename
877 // fn = current_filename; was set by default
879 // no user file name, no current name- punt
880 status_line_bold("No current filename");
884 if (init_text_buffer(fn) < 0)
887 #if ENABLE_FEATURE_VI_YANKMARK
888 if (Ureg >= 0 && Ureg < 28 && reg[Ureg] != 0) {
889 free(reg[Ureg]); // free orig line reg- for 'U'
892 if (YDreg >= 0 && YDreg < 28 && reg[YDreg] != 0) {
893 free(reg[YDreg]); // free default yank/delete register
897 // how many lines in text[]?
898 li = count_lines(text, end - 1);
899 status_line("\"%s\"%s"
900 USE_FEATURE_VI_READONLY("%s")
901 " %dL, %dC", current_filename,
902 (file_size(fn) < 0 ? " [New file]" : ""),
903 USE_FEATURE_VI_READONLY(
904 ((readonly_mode) ? " [Readonly]" : ""),
907 } else if (strncasecmp(cmd, "file", i) == 0) { // what File is this
908 if (b != -1 || e != -1) {
909 not_implemented("No address allowed on this command");
913 // user wants a new filename
914 free(current_filename);
915 current_filename = xstrdup(args);
917 // user wants file status info
918 last_status_cksum = 0; // force status update
920 } else if (strncasecmp(cmd, "features", i) == 0) { // what features are available
921 // print out values of all features
922 go_bottom_and_clear_to_eol();
927 } else if (strncasecmp(cmd, "list", i) == 0) { // literal print line
928 if (b < 0) { // no addr given- use defaults
929 q = begin_line(dot); // assume .,. for the range
932 go_bottom_and_clear_to_eol();
934 for (; q <= r; q++) {
938 c_is_no_print = (c & 0x80) && !Isprint(c);
945 } else if (c < ' ' || c == 127) {
956 #if ENABLE_FEATURE_VI_SET
960 } else if (strncasecmp(cmd, "quit", i) == 0 // Quit
961 || strncasecmp(cmd, "next", i) == 0 // edit next file
964 // force end of argv list
971 // don't exit if the file been modified
973 status_line_bold("No write since last change (:%s! overrides)",
974 (*cmd == 'q' ? "quit" : "next"));
977 // are there other file to edit
978 if (*cmd == 'q' && optind < save_argc - 1) {
979 status_line_bold("%d more file to edit", (save_argc - optind - 1));
982 if (*cmd == 'n' && optind >= save_argc - 1) {
983 status_line_bold("No more files to edit");
987 } else if (strncasecmp(cmd, "read", i) == 0) { // read file into text[]
990 status_line_bold("No filename given");
993 if (b < 0) { // no addr given- use defaults
994 q = begin_line(dot); // assume "dot"
996 // read after current line- unless user said ":0r foo"
999 ch = file_insert(fn, q USE_FEATURE_VI_READONLY(, 0));
1001 goto vc1; // nothing was inserted
1002 // how many lines in text[]?
1003 li = count_lines(q, q + ch - 1);
1004 status_line("\"%s\""
1005 USE_FEATURE_VI_READONLY("%s")
1007 USE_FEATURE_VI_READONLY((readonly_mode ? " [Readonly]" : ""),)
1010 // if the insert is before "dot" then we need to update
1015 } else if (strncasecmp(cmd, "rewind", i) == 0) { // rewind cmd line args
1016 if (file_modified && !useforce) {
1017 status_line_bold("No write since last change (:rewind! overrides)");
1019 // reset the filenames to edit
1020 optind = fn_start - 1;
1023 #if ENABLE_FEATURE_VI_SET
1024 } else if (strncasecmp(cmd, "set", i) == 0) { // set or clear features
1025 #if ENABLE_FEATURE_VI_SETOPTS
1028 i = 0; // offset into args
1029 // only blank is regarded as args delmiter. What about tab '\t' ?
1030 if (!args[0] || strcasecmp(args, "all") == 0) {
1031 // print out values of all options
1032 go_bottom_and_clear_to_eol();
1033 printf("----------------------------------------\r\n");
1034 #if ENABLE_FEATURE_VI_SETOPTS
1037 printf("autoindent ");
1043 printf("ignorecase ");
1046 printf("showmatch ");
1047 printf("tabstop=%d ", tabstop);
1052 #if ENABLE_FEATURE_VI_SETOPTS
1055 if (strncasecmp(argp, "no", 2) == 0)
1056 i = 2; // ":set noautoindent"
1057 setops(argp, "autoindent ", i, "ai", VI_AUTOINDENT);
1058 setops(argp, "flash ", i, "fl", VI_ERR_METHOD);
1059 setops(argp, "ignorecase ", i, "ic", VI_IGNORECASE);
1060 setops(argp, "showmatch ", i, "ic", VI_SHOWMATCH);
1062 if (strncasecmp(argp + i, "tabstop=%d ", 7) == 0) {
1063 sscanf(strchr(argp + i, '='), "tabstop=%d" + 7, &ch);
1064 if (ch > 0 && ch <= MAX_TABSTOP)
1067 while (*argp && *argp != ' ')
1068 argp++; // skip to arg delimiter (i.e. blank)
1069 while (*argp && *argp == ' ')
1070 argp++; // skip all delimiting blanks
1072 #endif /* FEATURE_VI_SETOPTS */
1073 #endif /* FEATURE_VI_SET */
1074 #if ENABLE_FEATURE_VI_SEARCH
1075 } else if (strncasecmp(cmd, "s", 1) == 0) { // substitute a pattern with a replacement pattern
1079 // F points to the "find" pattern
1080 // R points to the "replace" pattern
1081 // replace the cmd line delimiters "/" with NULLs
1082 gflag = 0; // global replace flag
1083 c = orig_buf[1]; // what is the delimiter
1084 F = orig_buf + 2; // start of "find"
1085 R = strchr(F, c); // middle delimiter
1086 if (!R) goto colon_s_fail;
1087 *R++ = '\0'; // terminate "find"
1088 buf1 = strchr(R, c);
1089 if (!buf1) goto colon_s_fail;
1090 *buf1++ = '\0'; // terminate "replace"
1091 if (*buf1 == 'g') { // :s/foo/bar/g
1093 gflag++; // turn on gflag
1096 if (b < 0) { // maybe :s/foo/bar/
1097 q = begin_line(dot); // start with cur line
1098 b = count_lines(text, q); // cur line number
1101 e = b; // maybe :.s/foo/bar/
1102 for (i = b; i <= e; i++) { // so, :20,23 s \0 find \0 replace \0
1103 ls = q; // orig line start
1105 buf1 = char_search(q, F, FORWARD, LIMITED); // search cur line only for "find"
1107 // we found the "find" pattern - delete it
1108 text_hole_delete(buf1, buf1 + strlen(F) - 1);
1109 // inset the "replace" patern
1110 string_insert(buf1, R); // insert the string
1111 // check for "global" :s/foo/bar/g
1113 if ((buf1 + strlen(R)) < end_line(ls)) {
1114 q = buf1 + strlen(R);
1115 goto vc4; // don't let q move past cur line
1121 #endif /* FEATURE_VI_SEARCH */
1122 } else if (strncasecmp(cmd, "version", i) == 0) { // show software version
1123 status_line(BB_VER " " BB_BT);
1124 } else if (strncasecmp(cmd, "write", i) == 0 // write text to file
1125 || strncasecmp(cmd, "wq", i) == 0
1126 || strncasecmp(cmd, "wn", i) == 0
1127 || strncasecmp(cmd, "x", i) == 0
1129 // is there a file name to write to?
1133 #if ENABLE_FEATURE_VI_READONLY
1134 if (readonly_mode && !useforce) {
1135 status_line_bold("\"%s\" File is read only", fn);
1139 // how many lines in text[]?
1140 li = count_lines(q, r);
1142 // see if file exists- if not, its just a new file request
1144 // if "fn" is not write-able, chmod u+w
1145 // sprintf(syscmd, "chmod u+w %s", fn);
1149 l = file_write(fn, q, r);
1150 if (useforce && forced) {
1152 // sprintf(syscmd, "chmod u-w %s", fn);
1158 status_line_bold("\"%s\" %s", fn, strerror(errno));
1160 status_line("\"%s\" %dL, %dC", fn, li, l);
1161 if (q == text && r == end - 1 && l == ch) {
1163 last_file_modified = -1;
1165 if ((cmd[0] == 'x' || cmd[1] == 'q' || cmd[1] == 'n' ||
1166 cmd[0] == 'X' || cmd[1] == 'Q' || cmd[1] == 'N')
1171 #if ENABLE_FEATURE_VI_READONLY
1174 #if ENABLE_FEATURE_VI_YANKMARK
1175 } else if (strncasecmp(cmd, "yank", i) == 0) { // yank lines
1176 if (b < 0) { // no addr given- use defaults
1177 q = begin_line(dot); // assume .,. for the range
1180 text_yank(q, r, YDreg);
1181 li = count_lines(q, r);
1182 status_line("Yank %d lines (%d chars) into [%c]",
1183 li, strlen(reg[YDreg]), what_reg());
1187 not_implemented(cmd);
1190 dot = bound_dot(dot); // make sure "dot" is valid
1192 #if ENABLE_FEATURE_VI_SEARCH
1194 status_line(":s expression missing delimiters");
1198 #endif /* FEATURE_VI_COLON */
1200 static void Hit_Return(void)
1205 write1("[Hit return to continue]");
1207 while ((c = get_one_char()) != '\n' && c != '\r')
1209 redraw(TRUE); // force redraw all
1212 static int next_tabstop(int col)
1214 return col + ((tabstop - 1) - (col % tabstop));
1217 //----- Synchronize the cursor to Dot --------------------------
1218 static void sync_cursor(char *d, int *row, int *col)
1220 char *beg_cur; // begin and end of "d" line
1224 beg_cur = begin_line(d); // first char of cur line
1226 if (beg_cur < screenbegin) {
1227 // "d" is before top line on screen
1228 // how many lines do we have to move
1229 cnt = count_lines(beg_cur, screenbegin);
1231 screenbegin = beg_cur;
1232 if (cnt > (rows - 1) / 2) {
1233 // we moved too many lines. put "dot" in middle of screen
1234 for (cnt = 0; cnt < (rows - 1) / 2; cnt++) {
1235 screenbegin = prev_line(screenbegin);
1239 char *end_scr; // begin and end of screen
1240 end_scr = end_screen(); // last char of screen
1241 if (beg_cur > end_scr) {
1242 // "d" is after bottom line on screen
1243 // how many lines do we have to move
1244 cnt = count_lines(end_scr, beg_cur);
1245 if (cnt > (rows - 1) / 2)
1246 goto sc1; // too many lines
1247 for (ro = 0; ro < cnt - 1; ro++) {
1248 // move screen begin the same amount
1249 screenbegin = next_line(screenbegin);
1250 // now, move the end of screen
1251 end_scr = next_line(end_scr);
1252 end_scr = end_line(end_scr);
1256 // "d" is on screen- find out which row
1258 for (ro = 0; ro < rows - 1; ro++) { // drive "ro" to correct row
1264 // find out what col "d" is on
1266 while (tp < d) { // drive "co" to correct column
1267 if (*tp == '\n') //vda || *tp == '\0')
1270 // handle tabs like real vi
1271 if (d == tp && cmd_mode) {
1274 co = next_tabstop(co);
1275 } else if ((unsigned char)*tp < ' ' || *tp == 0x7f) {
1276 co++; // display as ^X, use 2 columns
1282 // "co" is the column where "dot" is.
1283 // The screen has "columns" columns.
1284 // The currently displayed columns are 0+offset -- columns+ofset
1285 // |-------------------------------------------------------------|
1287 // offset | |------- columns ----------------|
1289 // If "co" is already in this range then we do not have to adjust offset
1290 // but, we do have to subtract the "offset" bias from "co".
1291 // If "co" is outside this range then we have to change "offset".
1292 // If the first char of a line is a tab the cursor will try to stay
1293 // in column 7, but we have to set offset to 0.
1295 if (co < 0 + offset) {
1298 if (co >= columns + offset) {
1299 offset = co - columns + 1;
1301 // if the first char of the line is a tab, and "dot" is sitting on it
1302 // force offset to 0.
1303 if (d == beg_cur && *d == '\t') {
1312 //----- Text Movement Routines ---------------------------------
1313 static char *begin_line(char *p) // return pointer to first char cur line
1316 p = memrchr(text, '\n', p - text);
1324 static char *end_line(char *p) // return pointer to NL of cur line
1327 p = memchr(p, '\n', end - p - 1);
1334 static char *dollar_line(char *p) // return pointer to just before NL line
1337 // Try to stay off of the Newline
1338 if (*p == '\n' && (p - begin_line(p)) > 0)
1343 static char *prev_line(char *p) // return pointer first char prev line
1345 p = begin_line(p); // goto begining of cur line
1346 if (p > text && p[-1] == '\n')
1347 p--; // step to prev line
1348 p = begin_line(p); // goto begining of prev line
1352 static char *next_line(char *p) // return pointer first char next line
1355 if (p < end - 1 && *p == '\n')
1356 p++; // step to next line
1360 //----- Text Information Routines ------------------------------
1361 static char *end_screen(void)
1366 // find new bottom line
1368 for (cnt = 0; cnt < rows - 2; cnt++)
1374 // count line from start to stop
1375 static int count_lines(char *start, char *stop)
1380 if (stop < start) { // start and stop are backwards- reverse them
1386 stop = end_line(stop);
1387 while (start <= stop && start <= end - 1) {
1388 start = end_line(start);
1396 static char *find_line(int li) // find begining of line #li
1400 for (q = text; li > 1; li--) {
1406 //----- Dot Movement Routines ----------------------------------
1407 static void dot_left(void)
1409 if (dot > text && dot[-1] != '\n')
1413 static void dot_right(void)
1415 if (dot < end - 1 && *dot != '\n')
1419 static void dot_begin(void)
1421 dot = begin_line(dot); // return pointer to first char cur line
1424 static void dot_end(void)
1426 dot = end_line(dot); // return pointer to last char cur line
1429 static char *move_to_col(char *p, int l)
1435 while (co < l && p < end) {
1436 if (*p == '\n') //vda || *p == '\0')
1439 co = next_tabstop(co);
1440 } else if (*p < ' ' || *p == 127) {
1441 co++; // display as ^X, use 2 columns
1449 static void dot_next(void)
1451 dot = next_line(dot);
1454 static void dot_prev(void)
1456 dot = prev_line(dot);
1459 static void dot_scroll(int cnt, int dir)
1463 for (; cnt > 0; cnt--) {
1466 // ctrl-Y scroll up one line
1467 screenbegin = prev_line(screenbegin);
1470 // ctrl-E scroll down one line
1471 screenbegin = next_line(screenbegin);
1474 // make sure "dot" stays on the screen so we dont scroll off
1475 if (dot < screenbegin)
1477 q = end_screen(); // find new bottom line
1479 dot = begin_line(q); // is dot is below bottom line?
1483 static void dot_skip_over_ws(void)
1486 while (isspace(*dot) && *dot != '\n' && dot < end - 1)
1490 static void dot_delete(void) // delete the char at 'dot'
1492 text_hole_delete(dot, dot);
1495 static char *bound_dot(char *p) // make sure text[0] <= P < "end"
1497 if (p >= end && end > text) {
1499 indicate_error('1');
1503 indicate_error('2');
1508 //----- Helper Utility Routines --------------------------------
1510 //----------------------------------------------------------------
1511 //----- Char Routines --------------------------------------------
1512 /* Chars that are part of a word-
1513 * 0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
1514 * Chars that are Not part of a word (stoppers)
1515 * !"#$%&'()*+,-./:;<=>?@[\]^`{|}~
1516 * Chars that are WhiteSpace
1517 * TAB NEWLINE VT FF RETURN SPACE
1518 * DO NOT COUNT NEWLINE AS WHITESPACE
1521 static char *new_screen(int ro, int co)
1526 screensize = ro * co + 8;
1527 screen = xmalloc(screensize);
1528 // initialize the new screen. assume this will be a empty file.
1530 // non-existent text[] lines start with a tilde (~).
1531 for (li = 1; li < ro - 1; li++) {
1532 screen[(li * co) + 0] = '~';
1537 #if ENABLE_FEATURE_VI_SEARCH
1538 static int mycmp(const char *s1, const char *s2, int len)
1542 i = strncmp(s1, s2, len);
1543 if (ENABLE_FEATURE_VI_SETOPTS && ignorecase) {
1544 i = strncasecmp(s1, s2, len);
1549 // search for pattern starting at p
1550 static char *char_search(char *p, const char *pat, int dir, int range)
1552 #ifndef REGEX_SEARCH
1557 if (dir == FORWARD) {
1558 stop = end - 1; // assume range is p - end-1
1559 if (range == LIMITED)
1560 stop = next_line(p); // range is to next line
1561 for (start = p; start < stop; start++) {
1562 if (mycmp(start, pat, len) == 0) {
1566 } else if (dir == BACK) {
1567 stop = text; // assume range is text - p
1568 if (range == LIMITED)
1569 stop = prev_line(p); // range is to prev line
1570 for (start = p - len; start >= stop; start--) {
1571 if (mycmp(start, pat, len) == 0) {
1576 // pattern not found
1578 #else /* REGEX_SEARCH */
1580 struct re_pattern_buffer preg;
1584 re_syntax_options = RE_SYNTAX_POSIX_EXTENDED;
1590 // assume a LIMITED forward search
1598 // count the number of chars to search over, forward or backward
1602 // RANGE could be negative if we are searching backwards
1605 q = re_compile_pattern(pat, strlen(pat), &preg);
1607 // The pattern was not compiled
1608 status_line_bold("bad search pattern: \"%s\": %s", pat, q);
1609 i = 0; // return p if pattern not compiled
1619 // search for the compiled pattern, preg, in p[]
1620 // range < 0- search backward
1621 // range > 0- search forward
1623 // re_search() < 0 not found or error
1624 // re_search() > 0 index of found pattern
1625 // struct pattern char int int int struct reg
1626 // re_search (*pattern_buffer, *string, size, start, range, *regs)
1627 i = re_search(&preg, q, size, 0, range, 0);
1630 i = 0; // return NULL if pattern not found
1633 if (dir == FORWARD) {
1639 #endif /* REGEX_SEARCH */
1641 #endif /* FEATURE_VI_SEARCH */
1643 static char *char_insert(char *p, char c) // insert the char c at 'p'
1645 if (c == 22) { // Is this an ctrl-V?
1646 p = stupid_insert(p, '^'); // use ^ to indicate literal next
1647 p--; // backup onto ^
1648 refresh(FALSE); // show the ^
1653 } else if (c == 27) { // Is this an ESC?
1656 end_cmd_q(); // stop adding to q
1657 last_status_cksum = 0; // force status update
1658 if ((p[-1] != '\n') && (dot > text)) {
1661 } else if (c == erase_char || c == 8 || c == 127) { // Is this a BS
1663 if ((p[-1] != '\n') && (dot>text)) {
1665 p = text_hole_delete(p, p); // shrink buffer 1 char
1668 // insert a char into text[]
1669 char *sp; // "save p"
1672 c = '\n'; // translate \r to \n
1673 sp = p; // remember addr of insert
1674 p = stupid_insert(p, c); // insert the char
1675 #if ENABLE_FEATURE_VI_SETOPTS
1676 if (showmatch && strchr(")]}", *sp) != NULL) {
1679 if (autoindent && c == '\n') { // auto indent the new line
1682 q = prev_line(p); // use prev line as templet
1683 for (; isblank(*q); q++) {
1684 p = stupid_insert(p, *q); // insert the char
1692 static char *stupid_insert(char *p, char c) // stupidly insert the char c at 'p'
1694 p = text_hole_make(p, 1);
1696 //file_modified++; - done by text_hole_make()
1700 static int find_range(char **start, char **stop, char c)
1702 char *save_dot, *p, *q, *t;
1703 int cnt, multiline = 0;
1708 if (strchr("cdy><", c)) {
1709 // these cmds operate on whole lines
1710 p = q = begin_line(p);
1711 for (cnt = 1; cnt < cmdcnt; cnt++) {
1715 } else if (strchr("^%$0bBeEfth\b\177", c)) {
1716 // These cmds operate on char positions
1717 do_cmd(c); // execute movement cmd
1719 } else if (strchr("wW", c)) {
1720 do_cmd(c); // execute movement cmd
1721 // if we are at the next word's first char
1722 // step back one char
1723 // but check the possibilities when it is true
1724 if (dot > text && ((isspace(dot[-1]) && !isspace(dot[0]))
1725 || (ispunct(dot[-1]) && !ispunct(dot[0]))
1726 || (isalnum(dot[-1]) && !isalnum(dot[0]))))
1727 dot--; // move back off of next word
1728 if (dot > text && *dot == '\n')
1729 dot--; // stay off NL
1731 } else if (strchr("H-k{", c)) {
1732 // these operate on multi-lines backwards
1733 q = end_line(dot); // find NL
1734 do_cmd(c); // execute movement cmd
1737 } else if (strchr("L+j}\r\n", c)) {
1738 // these operate on multi-lines forwards
1739 p = begin_line(dot);
1740 do_cmd(c); // execute movement cmd
1741 dot_end(); // find NL
1744 // nothing -- this causes any other values of c to
1745 // represent the one-character range under the
1746 // cursor. this is correct for ' ' and 'l', but
1747 // perhaps no others.
1756 // backward char movements don't include start position
1757 if (q > p && strchr("^0bBh\b\177", c)) q--;
1760 for (t = p; t <= q; t++) {
1773 static int st_test(char *p, int type, int dir, char *tested)
1783 if (type == S_BEFORE_WS) {
1785 test = ((!isspace(c)) || c == '\n');
1787 if (type == S_TO_WS) {
1789 test = ((!isspace(c)) || c == '\n');
1791 if (type == S_OVER_WS) {
1793 test = ((isspace(c)));
1795 if (type == S_END_PUNCT) {
1797 test = ((ispunct(c)));
1799 if (type == S_END_ALNUM) {
1801 test = ((isalnum(c)) || c == '_');
1807 static char *skip_thing(char *p, int linecnt, int dir, int type)
1811 while (st_test(p, type, dir, &c)) {
1812 // make sure we limit search to correct number of lines
1813 if (c == '\n' && --linecnt < 1)
1815 if (dir >= 0 && p >= end - 1)
1817 if (dir < 0 && p <= text)
1819 p += dir; // move to next char
1824 // find matching char of pair () [] {}
1825 static char *find_pair(char *p, const char c)
1832 dir = 1; // assume forward
1834 case '(': match = ')'; break;
1835 case '[': match = ']'; break;
1836 case '{': match = '}'; break;
1837 case ')': match = '('; dir = -1; break;
1838 case ']': match = '['; dir = -1; break;
1839 case '}': match = '{'; dir = -1; break;
1841 for (q = p + dir; text <= q && q < end; q += dir) {
1842 // look for match, count levels of pairs (( ))
1844 level++; // increase pair levels
1846 level--; // reduce pair level
1848 break; // found matching pair
1851 q = NULL; // indicate no match
1855 #if ENABLE_FEATURE_VI_SETOPTS
1856 // show the matching char of a pair, () [] {}
1857 static void showmatching(char *p)
1861 // we found half of a pair
1862 q = find_pair(p, *p); // get loc of matching char
1864 indicate_error('3'); // no matching char
1866 // "q" now points to matching pair
1867 save_dot = dot; // remember where we are
1868 dot = q; // go to new loc
1869 refresh(FALSE); // let the user see it
1870 mysleep(40); // give user some time
1871 dot = save_dot; // go back to old loc
1875 #endif /* FEATURE_VI_SETOPTS */
1877 // open a hole in text[]
1878 static char *text_hole_make(char *p, int size) // at "p", make a 'size' byte hole
1882 end += size; // adjust the new END
1883 if (end >= (text + text_size)) {
1885 text_size += end - (text + text_size) + 10240;
1886 new_text = xrealloc(text, text_size);
1887 screenbegin = new_text + (screenbegin - text);
1888 dot = new_text + (dot - text);
1889 end = new_text + (end - text);
1890 p = new_text + (p - text);
1893 memmove(p + size, p, end - size - p);
1894 memset(p, ' ', size); // clear new hole
1899 // close a hole in text[]
1900 static char *text_hole_delete(char *p, char *q) // delete "p" through "q", inclusive
1905 // move forwards, from beginning
1909 if (q < p) { // they are backward- swap them
1913 hole_size = q - p + 1;
1915 if (src < text || src > end)
1917 if (dest < text || dest >= end)
1920 goto thd_atend; // just delete the end of the buffer
1921 memmove(dest, src, cnt);
1923 end = end - hole_size; // adjust the new END
1925 dest = end - 1; // make sure dest in below end-1
1927 dest = end = text; // keep pointers valid
1933 // copy text into register, then delete text.
1934 // if dist <= 0, do not include, or go past, a NewLine
1936 static char *yank_delete(char *start, char *stop, int dist, int yf)
1940 // make sure start <= stop
1942 // they are backwards, reverse them
1948 // we cannot cross NL boundaries
1952 // dont go past a NewLine
1953 for (; p + 1 <= stop; p++) {
1955 stop = p; // "stop" just before NewLine
1961 #if ENABLE_FEATURE_VI_YANKMARK
1962 text_yank(start, stop, YDreg);
1964 if (yf == YANKDEL) {
1965 p = text_hole_delete(start, stop);
1970 static void show_help(void)
1972 puts("These features are available:"
1973 #if ENABLE_FEATURE_VI_SEARCH
1974 "\n\tPattern searches with / and ?"
1976 #if ENABLE_FEATURE_VI_DOT_CMD
1977 "\n\tLast command repeat with \'.\'"
1979 #if ENABLE_FEATURE_VI_YANKMARK
1980 "\n\tLine marking with 'x"
1981 "\n\tNamed buffers with \"x"
1983 #if ENABLE_FEATURE_VI_READONLY
1984 "\n\tReadonly if vi is called as \"view\""
1985 "\n\tReadonly with -R command line arg"
1987 #if ENABLE_FEATURE_VI_SET
1988 "\n\tSome colon mode commands with \':\'"
1990 #if ENABLE_FEATURE_VI_SETOPTS
1991 "\n\tSettable options with \":set\""
1993 #if ENABLE_FEATURE_VI_USE_SIGNALS
1994 "\n\tSignal catching- ^C"
1995 "\n\tJob suspend and resume with ^Z"
1997 #if ENABLE_FEATURE_VI_WIN_RESIZE
1998 "\n\tAdapt to window re-sizes"
2003 #if ENABLE_FEATURE_VI_DOT_CMD
2004 static void start_new_cmd_q(char c)
2006 // get buffer for new cmd
2007 // if there is a current cmd count put it in the buffer first
2009 lmc_len = sprintf(last_modifying_cmd, "%d%c", cmdcnt, c);
2010 } else { // just save char c onto queue
2011 last_modifying_cmd[0] = c;
2017 static void end_cmd_q(void)
2019 #if ENABLE_FEATURE_VI_YANKMARK
2020 YDreg = 26; // go back to default Yank/Delete reg
2024 #endif /* FEATURE_VI_DOT_CMD */
2026 #if ENABLE_FEATURE_VI_YANKMARK \
2027 || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) \
2028 || ENABLE_FEATURE_VI_CRASHME
2029 static char *string_insert(char *p, char *s) // insert the string at 'p'
2034 text_hole_make(p, i);
2036 for (cnt = 0; *s != '\0'; s++) {
2040 #if ENABLE_FEATURE_VI_YANKMARK
2041 status_line("Put %d lines (%d chars) from [%c]", cnt, i, what_reg());
2047 #if ENABLE_FEATURE_VI_YANKMARK
2048 static char *text_yank(char *p, char *q, int dest) // copy text into a register
2053 if (q < p) { // they are backwards- reverse them
2060 free(t); // if already a yank register, free it
2061 t = xmalloc(cnt + 1); // get a new register
2062 memset(t, '\0', cnt + 1); // clear new text[]
2063 strncpy(t, p, cnt); // copy text[] into bufer
2068 static char what_reg(void)
2072 c = 'D'; // default to D-reg
2073 if (0 <= YDreg && YDreg <= 25)
2074 c = 'a' + (char) YDreg;
2082 static void check_context(char cmd)
2084 // A context is defined to be "modifying text"
2085 // Any modifying command establishes a new context.
2087 if (dot < context_start || dot > context_end) {
2088 if (strchr(modifying_cmds, cmd) != NULL) {
2089 // we are trying to modify text[]- make this the current context
2090 mark[27] = mark[26]; // move cur to prev
2091 mark[26] = dot; // move local to cur
2092 context_start = prev_line(prev_line(dot));
2093 context_end = next_line(next_line(dot));
2094 //loiter= start_loiter= now;
2099 static char *swap_context(char *p) // goto new context for '' command make this the current context
2103 // the current context is in mark[26]
2104 // the previous context is in mark[27]
2105 // only swap context if other context is valid
2106 if (text <= mark[27] && mark[27] <= end - 1) {
2108 mark[27] = mark[26];
2110 p = mark[26]; // where we are going- previous context
2111 context_start = prev_line(prev_line(prev_line(p)));
2112 context_end = next_line(next_line(next_line(p)));
2116 #endif /* FEATURE_VI_YANKMARK */
2118 //----- Set terminal attributes --------------------------------
2119 static void rawmode(void)
2121 tcgetattr(0, &term_orig);
2122 term_vi = term_orig;
2123 term_vi.c_lflag &= (~ICANON & ~ECHO); // leave ISIG ON- allow intr's
2124 term_vi.c_iflag &= (~IXON & ~ICRNL);
2125 term_vi.c_oflag &= (~ONLCR);
2126 term_vi.c_cc[VMIN] = 1;
2127 term_vi.c_cc[VTIME] = 0;
2128 erase_char = term_vi.c_cc[VERASE];
2129 tcsetattr(0, TCSANOW, &term_vi);
2132 static void cookmode(void)
2135 tcsetattr(0, TCSANOW, &term_orig);
2138 //----- Come here when we get a window resize signal ---------
2139 #if ENABLE_FEATURE_VI_USE_SIGNALS
2140 static void winch_sig(int sig UNUSED_PARAM)
2142 // FIXME: do it in main loop!!!
2143 signal(SIGWINCH, winch_sig);
2144 if (ENABLE_FEATURE_VI_WIN_RESIZE) {
2145 get_terminal_width_height(0, &columns, &rows);
2146 if (rows > MAX_SCR_ROWS) rows = MAX_SCR_ROWS;
2147 if (columns > MAX_SCR_COLS) columns = MAX_SCR_COLS;
2149 new_screen(rows, columns); // get memory for virtual screen
2150 redraw(TRUE); // re-draw the screen
2153 //----- Come here when we get a continue signal -------------------
2154 static void cont_sig(int sig UNUSED_PARAM)
2156 rawmode(); // terminal to "raw"
2157 last_status_cksum = 0; // force status update
2158 redraw(TRUE); // re-draw the screen
2160 signal(SIGTSTP, suspend_sig);
2161 signal(SIGCONT, SIG_DFL);
2162 kill(my_pid, SIGCONT); // huh? why? we are already "continued"...
2165 //----- Come here when we get a Suspend signal -------------------
2166 static void suspend_sig(int sig UNUSED_PARAM)
2168 go_bottom_and_clear_to_eol();
2169 cookmode(); // terminal to "cooked"
2171 signal(SIGCONT, cont_sig);
2172 signal(SIGTSTP, SIG_DFL);
2173 kill(my_pid, SIGTSTP);
2176 //----- Come here when we get a signal ---------------------------
2177 static void catch_sig(int sig)
2179 signal(SIGINT, catch_sig);
2181 siglongjmp(restart, sig);
2183 #endif /* FEATURE_VI_USE_SIGNALS */
2185 static int mysleep(int hund) // sleep for 'h' 1/100 seconds
2187 struct pollfd pfd[1];
2190 pfd[0].events = POLLIN;
2191 return safe_poll(pfd, 1, hund*10) > 0;
2194 //----- IO Routines --------------------------------------------
2195 static char readit(void) // read (maybe cursor) key from stdin
2200 // Known escape sequences for cursor and function keys.
2201 static const struct esc_cmds {
2205 {"OA" , VI_K_UP }, // cursor key Up
2206 {"OB" , VI_K_DOWN }, // cursor key Down
2207 {"OC" , VI_K_RIGHT }, // Cursor Key Right
2208 {"OD" , VI_K_LEFT }, // cursor key Left
2209 {"OH" , VI_K_HOME }, // Cursor Key Home
2210 {"OF" , VI_K_END }, // Cursor Key End
2211 {"OP" , VI_K_FUN1 }, // Function Key F1
2212 {"OQ" , VI_K_FUN2 }, // Function Key F2
2213 {"OR" , VI_K_FUN3 }, // Function Key F3
2214 {"OS" , VI_K_FUN4 }, // Function Key F4
2216 {"[A" , VI_K_UP }, // cursor key Up
2217 {"[B" , VI_K_DOWN }, // cursor key Down
2218 {"[C" , VI_K_RIGHT }, // Cursor Key Right
2219 {"[D" , VI_K_LEFT }, // cursor key Left
2220 {"[H" , VI_K_HOME }, // Cursor Key Home
2221 {"[F" , VI_K_END }, // Cursor Key End
2222 {"[1~" , VI_K_HOME }, // Cursor Key Home
2223 {"[2~" , VI_K_INSERT }, // Cursor Key Insert
2224 {"[3~" , VI_K_DELETE }, // Cursor Key Delete
2225 {"[4~" , VI_K_END }, // Cursor Key End
2226 {"[5~" , VI_K_PAGEUP }, // Cursor Key Page Up
2227 {"[6~" , VI_K_PAGEDOWN}, // Cursor Key Page Down
2228 // careful: these have no terminating NUL!
2229 {"[11~", VI_K_FUN1 }, // Function Key F1
2230 {"[12~", VI_K_FUN2 }, // Function Key F2
2231 {"[13~", VI_K_FUN3 }, // Function Key F3
2232 {"[14~", VI_K_FUN4 }, // Function Key F4
2233 {"[15~", VI_K_FUN5 }, // Function Key F5
2234 {"[17~", VI_K_FUN6 }, // Function Key F6
2235 {"[18~", VI_K_FUN7 }, // Function Key F7
2236 {"[19~", VI_K_FUN8 }, // Function Key F8
2237 {"[20~", VI_K_FUN9 }, // Function Key F9
2238 {"[21~", VI_K_FUN10 }, // Function Key F10
2239 {"[23~", VI_K_FUN11 }, // Function Key F11
2240 {"[24~", VI_K_FUN12 }, // Function Key F12
2247 // If no data, block waiting for input.
2248 n = safe_read(0, readbuffer, 1);
2251 go_bottom_and_clear_to_eol();
2252 cookmode(); // terminal to "cooked"
2253 bb_error_msg_and_die("can't read user input");
2257 // Grab character to return from buffer
2259 // Returning NUL from this routine would be bad.
2263 if (n) memmove(readbuffer, readbuffer + 1, n);
2265 // If it's an escape sequence, loop through known matches.
2267 const struct esc_cmds *eindex;
2269 for (eindex = esccmds; eindex < esccmds + ARRAY_SIZE(esccmds); eindex++) {
2270 // n - position in seq to read
2271 int i = 0; // position in seq to compare
2272 int cnt = strnlen(eindex->seq, 4);
2274 // Loop through chars in this sequence.
2276 // We've matched this escape sequence up to [i-1]
2278 // Need more chars, read another one if it wouldn't block.
2279 // (Note that escape sequences come in as a unit,
2280 // so if we would block it's not really an escape sequence.)
2283 pfd.events = POLLIN;
2284 // Rob needed 300ms timeout on qemu
2285 if (safe_poll(&pfd, 1, /*timeout:*/ 300)) {
2286 if (safe_read(0, readbuffer + n, 1) <= 0)
2291 // Array is sorted from shortest to longest,
2292 // we can't match anything later in array,
2293 // break out of both loops.
2297 if (readbuffer[i] != eindex->seq[i])
2298 break; // try next seq
2299 if (++i == cnt) { // entire seq matched
2306 // We did not find matching sequence, it was a bare ESC.
2307 // We possibly read and stored more input in readbuffer by now.
2315 //----- IO Routines --------------------------------------------
2316 static char get_one_char(void)
2320 #if ENABLE_FEATURE_VI_DOT_CMD
2322 // we are not adding to the q.
2323 // but, we may be reading from a q
2325 // there is no current q, read from STDIN
2326 c = readit(); // get the users input
2328 // there is a queue to get chars from first
2331 // the end of the q, read from STDIN
2333 ioq_start = ioq = 0;
2334 c = readit(); // get the users input
2338 // adding STDIN chars to q
2339 c = readit(); // get the users input
2340 if (lmc_len >= MAX_INPUT_LEN - 1) {
2341 status_line_bold("last_modifying_cmd overrun");
2343 // add new char to q
2344 last_modifying_cmd[lmc_len++] = c;
2348 c = readit(); // get the users input
2349 #endif /* FEATURE_VI_DOT_CMD */
2353 // Get input line (uses "status line" area)
2354 static char *get_input_line(const char *prompt)
2356 // char [MAX_INPUT_LEN]
2357 #define buf get_input_line__buf
2362 strcpy(buf, prompt);
2363 last_status_cksum = 0; // force status update
2364 go_bottom_and_clear_to_eol();
2365 write1(prompt); // write out the :, /, or ? prompt
2368 while (i < MAX_INPUT_LEN) {
2370 if (c == '\n' || c == '\r' || c == 27)
2371 break; // this is end of input
2372 if (c == erase_char || c == 8 || c == 127) {
2373 // user wants to erase prev char
2375 write1("\b \b"); // erase char on screen
2376 if (i <= 0) // user backs up before b-o-l, exit
2389 static int file_size(const char *fn) // what is the byte size of "fn"
2395 if (fn && fn[0] && stat(fn, &st_buf) == 0) // see if file exists
2396 cnt = (int) st_buf.st_size;
2400 static int file_insert(const char *fn, char *p
2401 USE_FEATURE_VI_READONLY(, int update_ro_status))
2405 struct stat statbuf;
2408 if (stat(fn, &statbuf) < 0) {
2409 status_line_bold("\"%s\" %s", fn, strerror(errno));
2412 if (!S_ISREG(statbuf.st_mode)) {
2413 // This is not a regular file
2414 status_line_bold("\"%s\" Not a regular file", fn);
2417 if (p < text || p > end) {
2418 status_line_bold("Trying to insert file outside of memory");
2422 // read file to buffer
2423 fd = open(fn, O_RDONLY);
2425 status_line_bold("\"%s\" %s", fn, strerror(errno));
2428 size = statbuf.st_size;
2429 p = text_hole_make(p, size);
2430 cnt = safe_read(fd, p, size);
2432 status_line_bold("\"%s\" %s", fn, strerror(errno));
2433 p = text_hole_delete(p, p + size - 1); // un-do buffer insert
2434 } else if (cnt < size) {
2435 // There was a partial read, shrink unused space text[]
2436 p = text_hole_delete(p + cnt, p + (size - cnt) - 1); // un-do buffer insert
2437 status_line_bold("cannot read all of file \"%s\"", fn);
2443 #if ENABLE_FEATURE_VI_READONLY
2444 if (update_ro_status
2445 && ((access(fn, W_OK) < 0) ||
2446 /* root will always have access()
2447 * so we check fileperms too */
2448 !(statbuf.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH))
2451 SET_READONLY_FILE(readonly_mode);
2457 static int file_write(char *fn, char *first, char *last)
2459 int fd, cnt, charcnt;
2462 status_line_bold("No current filename");
2466 /* By popular request we do not open file with O_TRUNC,
2467 * but instead ftruncate() it _after_ successful write.
2468 * Might reduce amount of data lost on power fail etc.
2470 fd = open(fn, (O_WRONLY | O_CREAT), 0666);
2473 cnt = last - first + 1;
2474 charcnt = full_write(fd, first, cnt);
2475 ftruncate(fd, charcnt);
2476 if (charcnt == cnt) {
2478 //file_modified = FALSE;
2486 //----- Terminal Drawing ---------------------------------------
2487 // The terminal is made up of 'rows' line of 'columns' columns.
2488 // classically this would be 24 x 80.
2489 // screen coordinates
2495 // 23,0 ... 23,79 <- status line
2497 //----- Move the cursor to row x col (count from 0, not 1) -------
2498 static void place_cursor(int row, int col, int optimize)
2500 char cm1[sizeof(CMrc) + sizeof(int)*3 * 2];
2501 #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
2503 SZ_UP = sizeof(CMup),
2504 SZ_DN = sizeof(CMdown),
2505 SEQ_SIZE = SZ_UP > SZ_DN ? SZ_UP : SZ_DN,
2507 char cm2[SEQ_SIZE * 5 + 32]; // bigger than worst case size
2511 if (row < 0) row = 0;
2512 if (row >= rows) row = rows - 1;
2513 if (col < 0) col = 0;
2514 if (col >= columns) col = columns - 1;
2516 //----- 1. Try the standard terminal ESC sequence
2517 sprintf(cm1, CMrc, row + 1, col + 1);
2520 #if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
2521 if (optimize && col < 16) {
2523 int Rrow = last_row;
2524 int diff = Rrow - row;
2526 if (diff < -5 || diff > 5)
2529 //----- find the minimum # of chars to move cursor -------------
2530 //----- 2. Try moving with discreet chars (Newline, [back]space, ...)
2533 // move to the correct row
2534 while (row < Rrow) {
2535 // the cursor has to move up
2539 while (row > Rrow) {
2540 // the cursor has to move down
2541 strcat(cm2, CMdown);
2545 // now move to the correct column
2546 strcat(cm2, "\r"); // start at col 0
2547 // just send out orignal source char to get to correct place
2548 screenp = &screen[row * columns]; // start of screen line
2549 strncat(cm2, screenp, col);
2551 // pick the shortest cursor motion to send out
2552 if (strlen(cm2) < strlen(cm)) {
2558 #endif /* FEATURE_VI_OPTIMIZE_CURSOR */
2562 //----- Erase from cursor to end of line -----------------------
2563 static void clear_to_eol(void)
2565 write1(Ceol); // Erase from cursor to end of line
2568 static void go_bottom_and_clear_to_eol(void)
2570 place_cursor(rows - 1, 0, FALSE); // go to bottom of screen
2571 clear_to_eol(); // erase to end of line
2574 //----- Erase from cursor to end of screen -----------------------
2575 static void clear_to_eos(void)
2577 write1(Ceos); // Erase from cursor to end of screen
2580 //----- Start standout mode ------------------------------------
2581 static void standout_start(void) // send "start reverse video" sequence
2583 write1(SOs); // Start reverse video mode
2586 //----- End standout mode --------------------------------------
2587 static void standout_end(void) // send "end reverse video" sequence
2589 write1(SOn); // End reverse video mode
2592 //----- Flash the screen --------------------------------------
2593 static void flash(int h)
2595 standout_start(); // send "start reverse video" sequence
2598 standout_end(); // send "end reverse video" sequence
2602 static void Indicate_Error(void)
2604 #if ENABLE_FEATURE_VI_CRASHME
2606 return; // generate a random command
2609 write1(bell); // send out a bell character
2615 //----- Screen[] Routines --------------------------------------
2616 //----- Erase the Screen[] memory ------------------------------
2617 static void screen_erase(void)
2619 memset(screen, ' ', screensize); // clear new screen
2622 static int bufsum(char *buf, int count)
2625 char *e = buf + count;
2628 sum += (unsigned char) *buf++;
2632 //----- Draw the status line at bottom of the screen -------------
2633 static void show_status_line(void)
2635 int cnt = 0, cksum = 0;
2637 // either we already have an error or status message, or we
2639 if (!have_status_msg) {
2640 cnt = format_edit_status();
2641 cksum = bufsum(status_buffer, cnt);
2643 if (have_status_msg || ((cnt > 0 && last_status_cksum != cksum))) {
2644 last_status_cksum = cksum; // remember if we have seen this line
2645 go_bottom_and_clear_to_eol();
2646 write1(status_buffer);
2647 if (have_status_msg) {
2648 if (((int)strlen(status_buffer) - (have_status_msg - 1)) >
2650 have_status_msg = 0;
2653 have_status_msg = 0;
2655 place_cursor(crow, ccol, FALSE); // put cursor back in correct place
2660 //----- format the status buffer, the bottom line of screen ------
2661 // format status buffer, with STANDOUT mode
2662 static void status_line_bold(const char *format, ...)
2666 va_start(args, format);
2667 strcpy(status_buffer, SOs); // Terminal standout mode on
2668 vsprintf(status_buffer + sizeof(SOs)-1, format, args);
2669 strcat(status_buffer, SOn); // Terminal standout mode off
2672 have_status_msg = 1 + sizeof(SOs) + sizeof(SOn) - 2;
2675 // format status buffer
2676 static void status_line(const char *format, ...)
2680 va_start(args, format);
2681 vsprintf(status_buffer, format, args);
2684 have_status_msg = 1;
2687 // copy s to buf, convert unprintable
2688 static void print_literal(char *buf, const char *s)
2701 c_is_no_print = (c & 0x80) && !Isprint(c);
2702 if (c_is_no_print) {
2706 if (c < ' ' || c == 127) {
2719 if (strlen(buf) > MAX_INPUT_LEN - 10) // paranoia
2724 static void not_implemented(const char *s)
2726 char buf[MAX_INPUT_LEN];
2728 print_literal(buf, s);
2729 status_line_bold("\'%s\' is not implemented", buf);
2732 // show file status on status line
2733 static int format_edit_status(void)
2735 static const char cmd_mode_indicator[] ALIGN1 = "-IR-";
2737 #define tot format_edit_status__tot
2739 int cur, percent, ret, trunc_at;
2741 // file_modified is now a counter rather than a flag. this
2742 // helps reduce the amount of line counting we need to do.
2743 // (this will cause a mis-reporting of modified status
2744 // once every MAXINT editing operations.)
2746 // it would be nice to do a similar optimization here -- if
2747 // we haven't done a motion that could have changed which line
2748 // we're on, then we shouldn't have to do this count_lines()
2749 cur = count_lines(text, dot);
2751 // reduce counting -- the total lines can't have
2752 // changed if we haven't done any edits.
2753 if (file_modified != last_file_modified) {
2754 tot = cur + count_lines(dot, end - 1) - 1;
2755 last_file_modified = file_modified;
2758 // current line percent
2759 // ------------- ~~ ----------
2762 percent = (100 * cur) / tot;
2768 trunc_at = columns < STATUS_BUFFER_LEN-1 ?
2769 columns : STATUS_BUFFER_LEN-1;
2771 ret = snprintf(status_buffer, trunc_at+1,
2772 #if ENABLE_FEATURE_VI_READONLY
2773 "%c %s%s%s %d/%d %d%%",
2775 "%c %s%s %d/%d %d%%",
2777 cmd_mode_indicator[cmd_mode & 3],
2778 (current_filename != NULL ? current_filename : "No file"),
2779 #if ENABLE_FEATURE_VI_READONLY
2780 (readonly_mode ? " [Readonly]" : ""),
2782 (file_modified ? " [Modified]" : ""),
2785 if (ret >= 0 && ret < trunc_at)
2786 return ret; /* it all fit */
2788 return trunc_at; /* had to truncate */
2792 //----- Force refresh of all Lines -----------------------------
2793 static void redraw(int full_screen)
2795 place_cursor(0, 0, FALSE); // put cursor in correct place
2796 clear_to_eos(); // tell terminal to erase display
2797 screen_erase(); // erase the internal screen buffer
2798 last_status_cksum = 0; // force status update
2799 refresh(full_screen); // this will redraw the entire display
2803 //----- Format a text[] line into a buffer ---------------------
2804 static char* format_line(char *src /*, int li*/)
2809 char *dest = scr_out_buf; // [MAX_SCR_COLS + MAX_TABSTOP * 2]
2811 c = '~'; // char in col 0 in non-existent lines is '~'
2813 while (co < columns + tabstop) {
2814 // have we gone past the end?
2819 if ((c & 0x80) && !Isprint(c)) {
2822 if (c < ' ' || c == 0x7f) {
2826 while ((co % tabstop) != (tabstop - 1)) {
2834 c += '@'; // Ctrl-X -> 'X'
2839 // discard scrolled-off-to-the-left portion,
2840 // in tabstop-sized pieces
2841 if (ofs >= tabstop && co >= tabstop) {
2842 memmove(dest, dest + tabstop, co);
2849 // check "short line, gigantic offset" case
2852 // discard last scrolled off part
2855 // fill the rest with spaces
2857 memset(&dest[co], ' ', columns - co);
2861 //----- Refresh the changed screen lines -----------------------
2862 // Copy the source line from text[] into the buffer and note
2863 // if the current screenline is different from the new buffer.
2864 // If they differ then that line needs redrawing on the terminal.
2866 static void refresh(int full_screen)
2868 #define old_offset refresh__old_offset
2871 char *tp, *sp; // pointer into text[] and screen[]
2873 if (ENABLE_FEATURE_VI_WIN_RESIZE) {
2874 unsigned c = columns, r = rows;
2875 get_terminal_width_height(0, &columns, &rows);
2876 if (rows > MAX_SCR_ROWS) rows = MAX_SCR_ROWS;
2877 if (columns > MAX_SCR_COLS) columns = MAX_SCR_COLS;
2878 full_screen |= (c - columns) | (r - rows);
2880 sync_cursor(dot, &crow, &ccol); // where cursor will be (on "dot")
2881 tp = screenbegin; // index into text[] of top line
2883 // compare text[] to screen[] and mark screen[] lines that need updating
2884 for (li = 0; li < rows - 1; li++) {
2885 int cs, ce; // column start & end
2887 // format current text line
2888 out_buf = format_line(tp /*, li*/);
2890 // skip to the end of the current text[] line
2892 char *t = memchr(tp, '\n', end - tp);
2893 if (!t) t = end - 1;
2897 // see if there are any changes between vitual screen and out_buf
2898 changed = FALSE; // assume no change
2901 sp = &screen[li * columns]; // start of screen line
2903 // force re-draw of every single column from 0 - columns-1
2906 // compare newly formatted buffer with virtual screen
2907 // look forward for first difference between buf and screen
2908 for (; cs <= ce; cs++) {
2909 if (out_buf[cs] != sp[cs]) {
2910 changed = TRUE; // mark for redraw
2915 // look backward for last difference between out_buf and screen
2916 for (; ce >= cs; ce--) {
2917 if (out_buf[ce] != sp[ce]) {
2918 changed = TRUE; // mark for redraw
2922 // now, cs is index of first diff, and ce is index of last diff
2924 // if horz offset has changed, force a redraw
2925 if (offset != old_offset) {
2930 // make a sanity check of columns indexes
2932 if (ce > columns - 1) ce = columns - 1;
2933 if (cs > ce) { cs = 0; ce = columns - 1; }
2934 // is there a change between vitual screen and out_buf
2936 // copy changed part of buffer to virtual screen
2937 memcpy(sp+cs, out_buf+cs, ce-cs+1);
2939 // move cursor to column of first change
2940 //if (offset != old_offset) {
2941 // // place_cursor is still too stupid
2942 // // to handle offsets correctly
2943 // place_cursor(li, cs, FALSE);
2945 place_cursor(li, cs, TRUE);
2948 // write line out to terminal
2949 fwrite(&sp[cs], ce - cs + 1, 1, stdout);
2953 place_cursor(crow, ccol, TRUE);
2955 old_offset = offset;
2959 //---------------------------------------------------------------------
2960 //----- the Ascii Chart -----------------------------------------------
2962 // 00 nul 01 soh 02 stx 03 etx 04 eot 05 enq 06 ack 07 bel
2963 // 08 bs 09 ht 0a nl 0b vt 0c np 0d cr 0e so 0f si
2964 // 10 dle 11 dc1 12 dc2 13 dc3 14 dc4 15 nak 16 syn 17 etb
2965 // 18 can 19 em 1a sub 1b esc 1c fs 1d gs 1e rs 1f us
2966 // 20 sp 21 ! 22 " 23 # 24 $ 25 % 26 & 27 '
2967 // 28 ( 29 ) 2a * 2b + 2c , 2d - 2e . 2f /
2968 // 30 0 31 1 32 2 33 3 34 4 35 5 36 6 37 7
2969 // 38 8 39 9 3a : 3b ; 3c < 3d = 3e > 3f ?
2970 // 40 @ 41 A 42 B 43 C 44 D 45 E 46 F 47 G
2971 // 48 H 49 I 4a J 4b K 4c L 4d M 4e N 4f O
2972 // 50 P 51 Q 52 R 53 S 54 T 55 U 56 V 57 W
2973 // 58 X 59 Y 5a Z 5b [ 5c \ 5d ] 5e ^ 5f _
2974 // 60 ` 61 a 62 b 63 c 64 d 65 e 66 f 67 g
2975 // 68 h 69 i 6a j 6b k 6c l 6d m 6e n 6f o
2976 // 70 p 71 q 72 r 73 s 74 t 75 u 76 v 77 w
2977 // 78 x 79 y 7a z 7b { 7c | 7d } 7e ~ 7f del
2978 //---------------------------------------------------------------------
2980 //----- Execute a Vi Command -----------------------------------
2981 static void do_cmd(char c)
2983 const char *msg = msg; // for compiler
2984 char c1, *p, *q, *save_dot;
2986 int dir = dir; // for compiler
2989 // c1 = c; // quiet the compiler
2990 // cnt = yf = 0; // quiet the compiler
2991 // msg = p = q = save_dot = buf; // quiet the compiler
2992 memset(buf, '\0', 12);
2996 /* if this is a cursor key, skip these checks */
3009 if (cmd_mode == 2) {
3010 // flip-flop Insert/Replace mode
3011 if (c == VI_K_INSERT)
3013 // we are 'R'eplacing the current *dot with new char
3015 // don't Replace past E-o-l
3016 cmd_mode = 1; // convert to insert
3018 if (1 <= c || Isprint(c)) {
3020 dot = yank_delete(dot, dot, 0, YANKDEL); // delete char
3021 dot = char_insert(dot, c); // insert new char
3026 if (cmd_mode == 1) {
3027 // hitting "Insert" twice means "R" replace mode
3028 if (c == VI_K_INSERT) goto dc5;
3029 // insert the char c at "dot"
3030 if (1 <= c || Isprint(c)) {
3031 dot = char_insert(dot, c);
3046 #if ENABLE_FEATURE_VI_CRASHME
3047 case 0x14: // dc4 ctrl-T
3048 crashme = (crashme == 0) ? 1 : 0;
3077 //case 'u': // u- FIXME- there is no undo
3079 default: // unrecognised command
3087 not_implemented(buf);
3088 end_cmd_q(); // stop adding to q
3089 case 0x00: // nul- ignore
3091 case 2: // ctrl-B scroll up full screen
3092 case VI_K_PAGEUP: // Cursor Key Page Up
3093 dot_scroll(rows - 2, -1);
3095 case 4: // ctrl-D scroll down half screen
3096 dot_scroll((rows - 2) / 2, 1);
3098 case 5: // ctrl-E scroll down one line
3101 case 6: // ctrl-F scroll down full screen
3102 case VI_K_PAGEDOWN: // Cursor Key Page Down
3103 dot_scroll(rows - 2, 1);
3105 case 7: // ctrl-G show current status
3106 last_status_cksum = 0; // force status update
3108 case 'h': // h- move left
3109 case VI_K_LEFT: // cursor key Left
3110 case 8: // ctrl-H- move left (This may be ERASE char)
3111 case 0x7f: // DEL- move left (This may be ERASE char)
3117 case 10: // Newline ^J
3118 case 'j': // j- goto next line, same col
3119 case VI_K_DOWN: // cursor key Down
3123 dot_next(); // go to next B-o-l
3124 dot = move_to_col(dot, ccol + offset); // try stay in same col
3126 case 12: // ctrl-L force redraw whole screen
3127 case 18: // ctrl-R force redraw
3128 place_cursor(0, 0, FALSE); // put cursor in correct place
3129 clear_to_eos(); // tel terminal to erase display
3131 screen_erase(); // erase the internal screen buffer
3132 last_status_cksum = 0; // force status update
3133 refresh(TRUE); // this will redraw the entire display
3135 case 13: // Carriage Return ^M
3136 case '+': // +- goto next line
3143 case 21: // ctrl-U scroll up half screen
3144 dot_scroll((rows - 2) / 2, -1);
3146 case 25: // ctrl-Y scroll up one line
3152 cmd_mode = 0; // stop insrting
3154 last_status_cksum = 0; // force status update
3156 case ' ': // move right
3157 case 'l': // move right
3158 case VI_K_RIGHT: // Cursor Key Right
3164 #if ENABLE_FEATURE_VI_YANKMARK
3165 case '"': // "- name a register to use for Delete/Yank
3166 c1 = get_one_char();
3174 case '\'': // '- goto a specific mark
3175 c1 = get_one_char();
3180 q = mark[(unsigned char) c1];
3181 if (text <= q && q < end) {
3183 dot_begin(); // go to B-o-l
3186 } else if (c1 == '\'') { // goto previous context
3187 dot = swap_context(dot); // swap current and previous context
3188 dot_begin(); // go to B-o-l
3194 case 'm': // m- Mark a line
3195 // this is really stupid. If there are any inserts or deletes
3196 // between text[0] and dot then this mark will not point to the
3197 // correct location! It could be off by many lines!
3198 // Well..., at least its quick and dirty.
3199 c1 = get_one_char();
3203 // remember the line
3204 mark[(int) c1] = dot;
3209 case 'P': // P- Put register before
3210 case 'p': // p- put register after
3213 status_line_bold("Nothing in register %c", what_reg());
3216 // are we putting whole lines or strings
3217 if (strchr(p, '\n') != NULL) {
3219 dot_begin(); // putting lines- Put above
3222 // are we putting after very last line?
3223 if (end_line(dot) == (end - 1)) {
3224 dot = end; // force dot to end of text[]
3226 dot_next(); // next line, then put before
3231 dot_right(); // move to right, can move to NL
3233 dot = string_insert(dot, p); // insert the string
3234 end_cmd_q(); // stop adding to q
3236 case 'U': // U- Undo; replace current line with original version
3237 if (reg[Ureg] != 0) {
3238 p = begin_line(dot);
3240 p = text_hole_delete(p, q); // delete cur line
3241 p = string_insert(p, reg[Ureg]); // insert orig line
3246 #endif /* FEATURE_VI_YANKMARK */
3247 case '$': // $- goto end of line
3248 case VI_K_END: // Cursor Key End
3252 dot = end_line(dot);
3254 case '%': // %- find matching char of pair () [] {}
3255 for (q = dot; q < end && *q != '\n'; q++) {
3256 if (strchr("()[]{}", *q) != NULL) {
3257 // we found half of a pair
3258 p = find_pair(q, *q);
3270 case 'f': // f- forward to a user specified char
3271 last_forward_char = get_one_char(); // get the search char
3273 // dont separate these two commands. 'f' depends on ';'
3275 //**** fall through to ... ';'
3276 case ';': // ;- look at rest of line for last forward char
3280 if (last_forward_char == 0)
3283 while (q < end - 1 && *q != '\n' && *q != last_forward_char) {
3286 if (*q == last_forward_char)
3289 case ',': // repeat latest 'f' in opposite direction
3293 if (last_forward_char == 0)
3296 while (q >= text && *q != '\n' && *q != last_forward_char) {
3299 if (q >= text && *q == last_forward_char)
3303 case '-': // -- goto prev line
3310 #if ENABLE_FEATURE_VI_DOT_CMD
3311 case '.': // .- repeat the last modifying command
3312 // Stuff the last_modifying_cmd back into stdin
3313 // and let it be re-executed.
3315 last_modifying_cmd[lmc_len] = 0;
3316 ioq = ioq_start = xstrdup(last_modifying_cmd);
3320 #if ENABLE_FEATURE_VI_SEARCH
3321 case '?': // /- search for a pattern
3322 case '/': // /- search for a pattern
3325 q = get_input_line(buf); // get input line- use "status line"
3326 if (q[0] && !q[1]) {
3327 if (last_search_pattern[0])
3328 last_search_pattern[0] = c;
3329 goto dc3; // if no pat re-use old pat
3331 if (q[0]) { // strlen(q) > 1: new pat- save it and find
3332 // there is a new pat
3333 free(last_search_pattern);
3334 last_search_pattern = xstrdup(q);
3335 goto dc3; // now find the pattern
3337 // user changed mind and erased the "/"- do nothing
3339 case 'N': // N- backward search for last pattern
3343 dir = BACK; // assume BACKWARD search
3345 if (last_search_pattern[0] == '?') {
3349 goto dc4; // now search for pattern
3351 case 'n': // n- repeat search for last pattern
3352 // search rest of text[] starting at next char
3353 // if search fails return orignal "p" not the "p+1" address
3358 if (last_search_pattern == 0) {
3359 msg = "No previous regular expression";
3362 if (last_search_pattern[0] == '/') {
3363 dir = FORWARD; // assume FORWARD search
3366 if (last_search_pattern[0] == '?') {
3371 q = char_search(p, last_search_pattern + 1, dir, FULL);
3373 dot = q; // good search, update "dot"
3377 // no pattern found between "dot" and "end"- continue at top
3382 q = char_search(p, last_search_pattern + 1, dir, FULL);
3383 if (q != NULL) { // found something
3384 dot = q; // found new pattern- goto it
3385 msg = "search hit BOTTOM, continuing at TOP";
3387 msg = "search hit TOP, continuing at BOTTOM";
3390 msg = "Pattern not found";
3394 status_line_bold("%s", msg);
3396 case '{': // {- move backward paragraph
3397 q = char_search(dot, "\n\n", BACK, FULL);
3398 if (q != NULL) { // found blank line
3399 dot = next_line(q); // move to next blank line
3402 case '}': // }- move forward paragraph
3403 q = char_search(dot, "\n\n", FORWARD, FULL);
3404 if (q != NULL) { // found blank line
3405 dot = next_line(q); // move to next blank line
3408 #endif /* FEATURE_VI_SEARCH */
3409 case '0': // 0- goto begining of line
3419 if (c == '0' && cmdcnt < 1) {
3420 dot_begin(); // this was a standalone zero
3422 cmdcnt = cmdcnt * 10 + (c - '0'); // this 0 is part of a number
3425 case ':': // :- the colon mode commands
3426 p = get_input_line(":"); // get input line- use "status line"
3427 #if ENABLE_FEATURE_VI_COLON
3428 colon(p); // execute the command
3431 p++; // move past the ':'
3435 if (strncasecmp(p, "quit", cnt) == 0
3436 || strncasecmp(p, "q!", cnt) == 0 // delete lines
3438 if (file_modified && p[1] != '!') {
3439 status_line_bold("No write since last change (:quit! overrides)");
3443 } else if (strncasecmp(p, "write", cnt) == 0
3444 || strncasecmp(p, "wq", cnt) == 0
3445 || strncasecmp(p, "wn", cnt) == 0
3446 || strncasecmp(p, "x", cnt) == 0
3448 cnt = file_write(current_filename, text, end - 1);
3451 status_line_bold("Write error: %s", strerror(errno));
3454 last_file_modified = -1;
3455 status_line("\"%s\" %dL, %dC", current_filename, count_lines(text, end - 1), cnt);
3456 if (p[0] == 'x' || p[1] == 'q' || p[1] == 'n'
3457 || p[0] == 'X' || p[1] == 'Q' || p[1] == 'N'
3462 } else if (strncasecmp(p, "file", cnt) == 0) {
3463 last_status_cksum = 0; // force status update
3464 } else if (sscanf(p, "%d", &j) > 0) {
3465 dot = find_line(j); // go to line # j
3467 } else { // unrecognised cmd
3470 #endif /* !FEATURE_VI_COLON */
3472 case '<': // <- Left shift something
3473 case '>': // >- Right shift something
3474 cnt = count_lines(text, dot); // remember what line we are on
3475 c1 = get_one_char(); // get the type of thing to delete
3476 find_range(&p, &q, c1);
3477 yank_delete(p, q, 1, YANKONLY); // save copy before change
3480 i = count_lines(p, q); // # of lines we are shifting
3481 for ( ; i > 0; i--, p = next_line(p)) {
3483 // shift left- remove tab or 8 spaces
3485 // shrink buffer 1 char
3486 text_hole_delete(p, p);
3487 } else if (*p == ' ') {
3488 // we should be calculating columns, not just SPACE
3489 for (j = 0; *p == ' ' && j < tabstop; j++) {
3490 text_hole_delete(p, p);
3493 } else if (c == '>') {
3494 // shift right -- add tab or 8 spaces
3495 char_insert(p, '\t');
3498 dot = find_line(cnt); // what line were we on
3500 end_cmd_q(); // stop adding to q
3502 case 'A': // A- append at e-o-l
3503 dot_end(); // go to e-o-l
3504 //**** fall through to ... 'a'
3505 case 'a': // a- append after current char
3510 case 'B': // B- back a blank-delimited Word
3511 case 'E': // E- end of a blank-delimited word
3512 case 'W': // W- forward a blank-delimited word
3519 if (c == 'W' || isspace(dot[dir])) {
3520 dot = skip_thing(dot, 1, dir, S_TO_WS);
3521 dot = skip_thing(dot, 2, dir, S_OVER_WS);
3524 dot = skip_thing(dot, 1, dir, S_BEFORE_WS);
3526 case 'C': // C- Change to e-o-l
3527 case 'D': // D- delete to e-o-l
3529 dot = dollar_line(dot); // move to before NL
3530 // copy text into a register and delete
3531 dot = yank_delete(save_dot, dot, 0, YANKDEL); // delete to e-o-l
3533 goto dc_i; // start inserting
3534 #if ENABLE_FEATURE_VI_DOT_CMD
3536 end_cmd_q(); // stop adding to q
3539 case 'g': // 'gg' goto a line number (from vim)
3540 // (default to first line in file)
3541 c1 = get_one_char();
3546 not_implemented(buf);
3552 case 'G': // G- goto to a line number (default= E-O-F)
3553 dot = end - 1; // assume E-O-F
3555 dot = find_line(cmdcnt); // what line is #cmdcnt
3559 case 'H': // H- goto top line on screen
3561 if (cmdcnt > (rows - 1)) {
3562 cmdcnt = (rows - 1);
3569 case 'I': // I- insert before first non-blank
3572 //**** fall through to ... 'i'
3573 case 'i': // i- insert before current char
3574 case VI_K_INSERT: // Cursor Key Insert
3576 cmd_mode = 1; // start insrting
3578 case 'J': // J- join current and next lines together
3582 dot_end(); // move to NL
3583 if (dot < end - 1) { // make sure not last char in text[]
3584 *dot++ = ' '; // replace NL with space
3586 while (isblank(*dot)) { // delete leading WS
3590 end_cmd_q(); // stop adding to q
3592 case 'L': // L- goto bottom line on screen
3594 if (cmdcnt > (rows - 1)) {
3595 cmdcnt = (rows - 1);
3603 case 'M': // M- goto middle line on screen
3605 for (cnt = 0; cnt < (rows-1) / 2; cnt++)
3606 dot = next_line(dot);
3608 case 'O': // O- open a empty line above
3610 p = begin_line(dot);
3611 if (p[-1] == '\n') {
3613 case 'o': // o- open a empty line below; Yes, I know it is in the middle of the "if (..."
3615 dot = char_insert(dot, '\n');
3618 dot = char_insert(dot, '\n'); // i\n ESC
3623 case 'R': // R- continuous Replace char
3630 case 'X': // X- delete char before dot
3631 case 'x': // x- delete the current char
3632 case 's': // s- substitute the current char
3639 if (dot[dir] != '\n') {
3641 dot--; // delete prev char
3642 dot = yank_delete(dot, dot, 0, YANKDEL); // delete char
3645 goto dc_i; // start insrting
3646 end_cmd_q(); // stop adding to q
3648 case 'Z': // Z- if modified, {write}; exit
3649 // ZZ means to save file (if necessary), then exit
3650 c1 = get_one_char();
3655 if (file_modified) {
3656 if (ENABLE_FEATURE_VI_READONLY && readonly_mode) {
3657 status_line_bold("\"%s\" File is read only", current_filename);
3660 cnt = file_write(current_filename, text, end - 1);
3663 status_line_bold("Write error: %s", strerror(errno));
3664 } else if (cnt == (end - 1 - text + 1)) {
3671 case '^': // ^- move to first non-blank on line
3675 case 'b': // b- back a word
3676 case 'e': // e- end of word
3683 if ((dot + dir) < text || (dot + dir) > end - 1)
3686 if (isspace(*dot)) {
3687 dot = skip_thing(dot, (c == 'e') ? 2 : 1, dir, S_OVER_WS);
3689 if (isalnum(*dot) || *dot == '_') {
3690 dot = skip_thing(dot, 1, dir, S_END_ALNUM);
3691 } else if (ispunct(*dot)) {
3692 dot = skip_thing(dot, 1, dir, S_END_PUNCT);
3695 case 'c': // c- change something
3696 case 'd': // d- delete something
3697 #if ENABLE_FEATURE_VI_YANKMARK
3698 case 'y': // y- yank something
3699 case 'Y': // Y- Yank a line
3702 int yf, ml, whole = 0;
3703 yf = YANKDEL; // assume either "c" or "d"
3704 #if ENABLE_FEATURE_VI_YANKMARK
3705 if (c == 'y' || c == 'Y')
3710 c1 = get_one_char(); // get the type of thing to delete
3711 // determine range, and whether it spans lines
3712 ml = find_range(&p, &q, c1);
3713 if (c1 == 27) { // ESC- user changed mind and wants out
3714 c = c1 = 27; // Escape- do nothing
3715 } else if (strchr("wW", c1)) {
3717 // don't include trailing WS as part of word
3718 while (isblank(*q)) {
3719 if (q <= text || q[-1] == '\n')
3724 dot = yank_delete(p, q, ml, yf); // delete word
3725 } else if (strchr("^0bBeEft%$ lh\b\177", c1)) {
3726 // partial line copy text into a register and delete
3727 dot = yank_delete(p, q, ml, yf); // delete word
3728 } else if (strchr("cdykjHL+-{}\r\n", c1)) {
3729 // whole line copy text into a register and delete
3730 dot = yank_delete(p, q, ml, yf); // delete lines
3733 // could not recognize object
3734 c = c1 = 27; // error-
3740 dot = char_insert(dot, '\n');
3741 // on the last line of file don't move to prev line
3742 if (whole && dot != (end-1)) {
3745 } else if (c == 'd') {
3751 // if CHANGING, not deleting, start inserting after the delete
3753 strcpy(buf, "Change");
3754 goto dc_i; // start inserting
3757 strcpy(buf, "Delete");
3759 #if ENABLE_FEATURE_VI_YANKMARK
3760 if (c == 'y' || c == 'Y') {
3761 strcpy(buf, "Yank");
3765 for (cnt = 0; p <= q; p++) {
3769 status_line("%s %d lines (%d chars) using [%c]",
3770 buf, cnt, strlen(reg[YDreg]), what_reg());
3772 end_cmd_q(); // stop adding to q
3776 case 'k': // k- goto prev line, same col
3777 case VI_K_UP: // cursor key Up
3782 dot = move_to_col(dot, ccol + offset); // try stay in same col
3784 case 'r': // r- replace the current char with user input
3785 c1 = get_one_char(); // get the replacement char
3790 end_cmd_q(); // stop adding to q
3792 case 't': // t- move to char prior to next x
3793 last_forward_char = get_one_char();
3795 if (*dot == last_forward_char)
3797 last_forward_char= 0;
3799 case 'w': // w- forward a word
3803 if (isalnum(*dot) || *dot == '_') { // we are on ALNUM
3804 dot = skip_thing(dot, 1, FORWARD, S_END_ALNUM);
3805 } else if (ispunct(*dot)) { // we are on PUNCT
3806 dot = skip_thing(dot, 1, FORWARD, S_END_PUNCT);
3809 dot++; // move over word
3810 if (isspace(*dot)) {
3811 dot = skip_thing(dot, 2, FORWARD, S_OVER_WS);
3815 c1 = get_one_char(); // get the replacement char
3818 cnt = (rows - 2) / 2; // put dot at center
3820 cnt = rows - 2; // put dot at bottom
3821 screenbegin = begin_line(dot); // start dot at top
3822 dot_scroll(cnt, -1);
3824 case '|': // |- move to column "cmdcnt"
3825 dot = move_to_col(dot, cmdcnt - 1); // try to move to column
3827 case '~': // ~- flip the case of letters a-z -> A-Z
3831 if (islower(*dot)) {
3832 *dot = toupper(*dot);
3834 } else if (isupper(*dot)) {
3835 *dot = tolower(*dot);
3839 end_cmd_q(); // stop adding to q
3841 //----- The Cursor and Function Keys -----------------------------
3842 case VI_K_HOME: // Cursor Key Home
3845 // The Fn keys could point to do_macro which could translate them
3846 case VI_K_FUN1: // Function Key F1
3847 case VI_K_FUN2: // Function Key F2
3848 case VI_K_FUN3: // Function Key F3
3849 case VI_K_FUN4: // Function Key F4
3850 case VI_K_FUN5: // Function Key F5
3851 case VI_K_FUN6: // Function Key F6
3852 case VI_K_FUN7: // Function Key F7
3853 case VI_K_FUN8: // Function Key F8
3854 case VI_K_FUN9: // Function Key F9
3855 case VI_K_FUN10: // Function Key F10
3856 case VI_K_FUN11: // Function Key F11
3857 case VI_K_FUN12: // Function Key F12
3862 // if text[] just became empty, add back an empty line
3864 char_insert(text, '\n'); // start empty buf with dummy line
3867 // it is OK for dot to exactly equal to end, otherwise check dot validity
3869 dot = bound_dot(dot); // make sure "dot" is valid
3871 #if ENABLE_FEATURE_VI_YANKMARK
3872 check_context(c); // update the current context
3876 cmdcnt = 0; // cmd was not a number, reset cmdcnt
3877 cnt = dot - begin_line(dot);
3878 // Try to stay off of the Newline
3879 if (*dot == '\n' && cnt > 0 && cmd_mode == 0)
3883 /* NB! the CRASHME code is unmaintained, and doesn't currently build */
3884 #if ENABLE_FEATURE_VI_CRASHME
3885 static int totalcmds = 0;
3886 static int Mp = 85; // Movement command Probability
3887 static int Np = 90; // Non-movement command Probability
3888 static int Dp = 96; // Delete command Probability
3889 static int Ip = 97; // Insert command Probability
3890 static int Yp = 98; // Yank command Probability
3891 static int Pp = 99; // Put command Probability
3892 static int M = 0, N = 0, I = 0, D = 0, Y = 0, P = 0, U = 0;
3893 static const char chars[20] = "\t012345 abcdABCD-=.$";
3894 static const char *const words[20] = {
3895 "this", "is", "a", "test",
3896 "broadcast", "the", "emergency", "of",
3897 "system", "quick", "brown", "fox",
3898 "jumped", "over", "lazy", "dogs",
3899 "back", "January", "Febuary", "March"
3901 static const char *const lines[20] = {
3902 "You should have received a copy of the GNU General Public License\n",
3903 "char c, cm, *cmd, *cmd1;\n",
3904 "generate a command by percentages\n",
3905 "Numbers may be typed as a prefix to some commands.\n",
3906 "Quit, discarding changes!\n",
3907 "Forced write, if permission originally not valid.\n",
3908 "In general, any ex or ed command (such as substitute or delete).\n",
3909 "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
3910 "Please get w/ me and I will go over it with you.\n",
3911 "The following is a list of scheduled, committed changes.\n",
3912 "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
3913 "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
3914 "Any question about transactions please contact Sterling Huxley.\n",
3915 "I will try to get back to you by Friday, December 31.\n",
3916 "This Change will be implemented on Friday.\n",
3917 "Let me know if you have problems accessing this;\n",
3918 "Sterling Huxley recently added you to the access list.\n",
3919 "Would you like to go to lunch?\n",
3920 "The last command will be automatically run.\n",
3921 "This is too much english for a computer geek.\n",
3923 static char *multilines[20] = {
3924 "You should have received a copy of the GNU General Public License\n",
3925 "char c, cm, *cmd, *cmd1;\n",
3926 "generate a command by percentages\n",
3927 "Numbers may be typed as a prefix to some commands.\n",
3928 "Quit, discarding changes!\n",
3929 "Forced write, if permission originally not valid.\n",
3930 "In general, any ex or ed command (such as substitute or delete).\n",
3931 "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
3932 "Please get w/ me and I will go over it with you.\n",
3933 "The following is a list of scheduled, committed changes.\n",
3934 "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
3935 "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
3936 "Any question about transactions please contact Sterling Huxley.\n",
3937 "I will try to get back to you by Friday, December 31.\n",
3938 "This Change will be implemented on Friday.\n",
3939 "Let me know if you have problems accessing this;\n",
3940 "Sterling Huxley recently added you to the access list.\n",
3941 "Would you like to go to lunch?\n",
3942 "The last command will be automatically run.\n",
3943 "This is too much english for a computer geek.\n",
3946 // create a random command to execute
3947 static void crash_dummy()
3949 static int sleeptime; // how long to pause between commands
3950 char c, cm, *cmd, *cmd1;
3951 int i, cnt, thing, rbi, startrbi, percent;
3953 // "dot" movement commands
3954 cmd1 = " \n\r\002\004\005\006\025\0310^$-+wWeEbBhjklHL";
3956 // is there already a command running?
3957 if (chars_to_parse > 0)
3961 sleeptime = 0; // how long to pause between commands
3962 memset(readbuffer, '\0', sizeof(readbuffer));
3963 // generate a command by percentages
3964 percent = (int) lrand48() % 100; // get a number from 0-99
3965 if (percent < Mp) { // Movement commands
3966 // available commands
3969 } else if (percent < Np) { // non-movement commands
3970 cmd = "mz<>\'\""; // available commands
3972 } else if (percent < Dp) { // Delete commands
3973 cmd = "dx"; // available commands
3975 } else if (percent < Ip) { // Inset commands
3976 cmd = "iIaAsrJ"; // available commands
3978 } else if (percent < Yp) { // Yank commands
3979 cmd = "yY"; // available commands
3981 } else if (percent < Pp) { // Put commands
3982 cmd = "pP"; // available commands
3985 // We do not know how to handle this command, try again
3989 // randomly pick one of the available cmds from "cmd[]"
3990 i = (int) lrand48() % strlen(cmd);
3992 if (strchr(":\024", cm))
3993 goto cd0; // dont allow colon or ctrl-T commands
3994 readbuffer[rbi++] = cm; // put cmd into input buffer
3996 // now we have the command-
3997 // there are 1, 2, and multi char commands
3998 // find out which and generate the rest of command as necessary
3999 if (strchr("dmryz<>\'\"", cm)) { // 2-char commands
4000 cmd1 = " \n\r0$^-+wWeEbBhjklHL";
4001 if (cm == 'm' || cm == '\'' || cm == '\"') { // pick a reg[]
4002 cmd1 = "abcdefghijklmnopqrstuvwxyz";
4004 thing = (int) lrand48() % strlen(cmd1); // pick a movement command
4006 readbuffer[rbi++] = c; // add movement to input buffer
4008 if (strchr("iIaAsc", cm)) { // multi-char commands
4010 // change some thing
4011 thing = (int) lrand48() % strlen(cmd1); // pick a movement command
4013 readbuffer[rbi++] = c; // add movement to input buffer
4015 thing = (int) lrand48() % 4; // what thing to insert
4016 cnt = (int) lrand48() % 10; // how many to insert
4017 for (i = 0; i < cnt; i++) {
4018 if (thing == 0) { // insert chars
4019 readbuffer[rbi++] = chars[((int) lrand48() % strlen(chars))];
4020 } else if (thing == 1) { // insert words
4021 strcat(readbuffer, words[(int) lrand48() % 20]);
4022 strcat(readbuffer, " ");
4023 sleeptime = 0; // how fast to type
4024 } else if (thing == 2) { // insert lines
4025 strcat(readbuffer, lines[(int) lrand48() % 20]);
4026 sleeptime = 0; // how fast to type
4027 } else { // insert multi-lines
4028 strcat(readbuffer, multilines[(int) lrand48() % 20]);
4029 sleeptime = 0; // how fast to type
4032 strcat(readbuffer, "\033");
4034 chars_to_parse = strlen(readbuffer);
4038 mysleep(sleeptime); // sleep 1/100 sec
4041 // test to see if there are any errors
4042 static void crash_test()
4044 static time_t oldtim;
4051 strcat(msg, "end<text ");
4053 if (end > textend) {
4054 strcat(msg, "end>textend ");
4057 strcat(msg, "dot<text ");
4060 strcat(msg, "dot>end ");
4062 if (screenbegin < text) {
4063 strcat(msg, "screenbegin<text ");
4065 if (screenbegin > end - 1) {
4066 strcat(msg, "screenbegin>end-1 ");
4070 printf("\n\n%d: \'%c\' %s\n\n\n%s[Hit return to continue]%s",
4071 totalcmds, last_input_char, msg, SOs, SOn);
4073 while (safe_read(STDIN_FILENO, d, 1) > 0) {
4074 if (d[0] == '\n' || d[0] == '\r')
4079 if (tim >= (oldtim + 3)) {
4080 sprintf(status_buffer,
4081 "Tot=%d: M=%d N=%d I=%d D=%d Y=%d P=%d U=%d size=%d",
4082 totalcmds, M, N, I, D, Y, P, U, end - text + 1);