Commit | Line | Data |
---|---|---|
19d73a0e DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
7 | #ifndef lint | |
5a6c967e | 8 | static char *sccsid = "@(#)ex_cmds2.c 7.5 (Berkeley) %G%"; |
19d73a0e DF |
9 | #endif not lint |
10 | ||
7df0b7cf MH |
11 | #include "ex.h" |
12 | #include "ex_argv.h" | |
13 | #include "ex_temp.h" | |
14 | #include "ex_tty.h" | |
15 | #include "ex_vis.h" | |
16 | ||
299f2784 MH |
17 | extern bool pflag, nflag; /* mjm: extern; also in ex_cmds.c */ |
18 | extern int poffset; /* mjm: extern; also in ex_cmds.c */ | |
7df0b7cf MH |
19 | |
20 | /* | |
21 | * Subroutines for major command loop. | |
22 | */ | |
23 | ||
24 | /* | |
25 | * Is there a single letter indicating a named buffer next? | |
26 | */ | |
27 | cmdreg() | |
28 | { | |
29 | register int c = 0; | |
30 | register int wh = skipwh(); | |
31 | ||
32 | if (wh && isalpha(peekchar())) | |
5a6c967e | 33 | c = ex_getchar(); |
7df0b7cf MH |
34 | return (c); |
35 | } | |
36 | ||
37 | /* | |
38 | * Tell whether the character ends a command | |
39 | */ | |
40 | endcmd(ch) | |
41 | int ch; | |
42 | { | |
43 | switch (ch) { | |
44 | ||
45 | case '\n': | |
46 | case EOF: | |
47 | endline = 1; | |
48 | return (1); | |
49 | ||
50 | case '|': | |
d266c416 | 51 | case '"': |
7df0b7cf MH |
52 | endline = 0; |
53 | return (1); | |
54 | } | |
55 | return (0); | |
56 | } | |
57 | ||
58 | /* | |
59 | * Insist on the end of the command. | |
60 | */ | |
61 | eol() | |
62 | { | |
63 | ||
64 | if (!skipend()) | |
65 | error("Extra chars|Extra characters at end of command"); | |
66 | ignnEOF(); | |
67 | } | |
68 | ||
69 | /* | |
70 | * Print out the message in the error message file at str, | |
71 | * with i an integer argument to printf. | |
72 | */ | |
73 | /*VARARGS2*/ | |
74 | error(str, i) | |
5a6c967e CH |
75 | #ifndef EXSTRINGS |
76 | char *str; | |
7df0b7cf | 77 | #else |
5a6c967e CH |
78 | # ifdef lint |
79 | char *str; | |
80 | # else | |
81 | int str; | |
82 | # endif | |
7df0b7cf MH |
83 | #endif |
84 | int i; | |
85 | { | |
86 | ||
87 | error0(); | |
88 | merror(str, i); | |
04379bab MH |
89 | if (writing) { |
90 | serror(" [Warning - %s is incomplete]", file); | |
91 | writing = 0; | |
92 | } | |
7df0b7cf MH |
93 | error1(str); |
94 | } | |
95 | ||
96 | /* | |
97 | * Rewind the argument list. | |
98 | */ | |
99 | erewind() | |
100 | { | |
101 | ||
102 | argc = argc0; | |
103 | argv = argv0; | |
104 | args = args0; | |
105 | if (argc > 1 && !hush) { | |
5a6c967e | 106 | ex_printf(mesg("%d files@to edit"), argc); |
7df0b7cf | 107 | if (inopen) |
5a6c967e | 108 | ex_putchar(' '); |
7df0b7cf MH |
109 | else |
110 | putNFL(); | |
111 | } | |
112 | } | |
113 | ||
114 | /* | |
115 | * Guts of the pre-printing error processing. | |
116 | * If in visual and catching errors, then we dont mung up the internals, | |
117 | * just fixing up the echo area for the print. | |
118 | * Otherwise we reset a number of externals, and discard unused input. | |
119 | */ | |
120 | error0() | |
121 | { | |
122 | ||
123 | if (vcatch) { | |
124 | if (splitw == 0) | |
125 | fixech(); | |
126 | if (!SO || !SE) | |
127 | dingdong(); | |
128 | return; | |
129 | } | |
130 | if (input) { | |
131 | input = strend(input) - 1; | |
132 | if (*input == '\n') | |
133 | setlastchar('\n'); | |
134 | input = 0; | |
135 | } | |
136 | setoutt(); | |
137 | flush(); | |
138 | resetflav(); | |
7df0b7cf MH |
139 | if (!SO || !SE) |
140 | dingdong(); | |
141 | if (inopen) { | |
142 | /* | |
143 | * We are coming out of open/visual ungracefully. | |
144 | * Restore COLUMNS, undo, and fix tty mode. | |
145 | */ | |
146 | COLUMNS = OCOLUMNS; | |
147 | undvis(); | |
148 | ostop(normf); | |
d266c416 | 149 | /* ostop should be doing this |
7df0b7cf MH |
150 | putpad(VE); |
151 | putpad(KE); | |
d266c416 | 152 | */ |
7df0b7cf MH |
153 | putnl(); |
154 | } | |
155 | inopen = 0; | |
156 | holdcm = 0; | |
157 | } | |
158 | ||
159 | /* | |
160 | * Post error printing processing. | |
161 | * Close the i/o file if left open. | |
162 | * If catching in visual then throw to the visual catch, | |
163 | * else if a child after a fork, then exit. | |
164 | * Otherwise, in the normal command mode error case, | |
165 | * finish state reset, and throw to top. | |
166 | */ | |
167 | error1(str) | |
168 | char *str; | |
169 | { | |
170 | bool die; | |
171 | ||
172 | if (io > 0) { | |
173 | close(io); | |
174 | io = -1; | |
175 | } | |
176 | die = (getpid() != ppid); /* Only children die */ | |
d266c416 | 177 | inappend = inglobal = 0; |
887e3e0d | 178 | globp = vglobp = vmacp = 0; |
7df0b7cf | 179 | if (vcatch && !die) { |
7df0b7cf MH |
180 | inopen = 1; |
181 | vcatch = 0; | |
887e3e0d MH |
182 | if (str) |
183 | noonl(); | |
7df0b7cf MH |
184 | fixol(); |
185 | longjmp(vreslab,1); | |
186 | } | |
187 | if (str && !vcatch) | |
188 | putNFL(); | |
189 | if (die) | |
5a6c967e | 190 | ex_exit(1); |
7df0b7cf MH |
191 | lseek(0, 0L, 2); |
192 | if (inglobal) | |
193 | setlastchar('\n'); | |
7df0b7cf MH |
194 | while (lastchar() != '\n' && lastchar() != EOF) |
195 | ignchar(); | |
196 | ungetchar(0); | |
197 | endline = 1; | |
198 | reset(); | |
199 | } | |
200 | ||
201 | fixol() | |
202 | { | |
203 | if (Outchar != vputchar) { | |
204 | flush(); | |
205 | if (state == ONEOPEN || state == HARDOPEN) | |
206 | outline = destline = 0; | |
207 | Outchar = vputchar; | |
208 | vcontin(1); | |
209 | } else { | |
210 | if (destcol) | |
211 | vclreol(); | |
212 | vclean(); | |
213 | } | |
214 | } | |
215 | ||
216 | /* | |
217 | * Does an ! character follow in the command stream? | |
218 | */ | |
219 | exclam() | |
220 | { | |
221 | ||
222 | if (peekchar() == '!') { | |
223 | ignchar(); | |
224 | return (1); | |
225 | } | |
226 | return (0); | |
227 | } | |
228 | ||
229 | /* | |
230 | * Make an argument list for e.g. next. | |
231 | */ | |
232 | makargs() | |
233 | { | |
234 | ||
235 | glob(&frob); | |
236 | argc0 = frob.argc0; | |
237 | argv0 = frob.argv; | |
238 | args0 = argv0[0]; | |
239 | erewind(); | |
240 | } | |
241 | ||
242 | /* | |
243 | * Advance to next file in argument list. | |
244 | */ | |
245 | next() | |
246 | { | |
d266c416 | 247 | extern short isalt; /* defined in ex_io.c */ |
7df0b7cf MH |
248 | |
249 | if (argc == 0) | |
250 | error("No more files@to edit"); | |
251 | morargc = argc; | |
d266c416 | 252 | isalt = (strcmp(altfile, args)==0) + 1; |
7df0b7cf MH |
253 | if (savedfile[0]) |
254 | CP(altfile, savedfile); | |
255 | CP(savedfile, args); | |
256 | argc--; | |
257 | args = argv ? *++argv : strend(args) + 1; | |
258 | } | |
259 | ||
260 | /* | |
261 | * Eat trailing flags and offsets after a command, | |
262 | * saving for possible later post-command prints. | |
263 | */ | |
264 | newline() | |
265 | { | |
266 | register int c; | |
267 | ||
268 | resetflav(); | |
269 | for (;;) { | |
5a6c967e | 270 | c = ex_getchar(); |
7df0b7cf MH |
271 | switch (c) { |
272 | ||
273 | case '^': | |
274 | case '-': | |
275 | poffset--; | |
276 | break; | |
277 | ||
278 | case '+': | |
279 | poffset++; | |
280 | break; | |
281 | ||
282 | case 'l': | |
283 | listf++; | |
284 | break; | |
285 | ||
286 | case '#': | |
287 | nflag++; | |
288 | break; | |
289 | ||
290 | case 'p': | |
291 | listf = 0; | |
292 | break; | |
293 | ||
294 | case ' ': | |
295 | case '\t': | |
296 | continue; | |
297 | ||
d266c416 MH |
298 | case '"': |
299 | comment(); | |
300 | setflav(); | |
301 | return; | |
302 | ||
7df0b7cf MH |
303 | default: |
304 | if (!endcmd(c)) | |
305 | serror("Extra chars|Extra characters at end of \"%s\" command", Command); | |
306 | if (c == EOF) | |
307 | ungetchar(c); | |
308 | setflav(); | |
309 | return; | |
310 | } | |
311 | pflag++; | |
312 | } | |
313 | } | |
314 | ||
315 | /* | |
316 | * Before quit or respec of arg list, check that there are | |
317 | * no more files in the arg list. | |
318 | */ | |
319 | nomore() | |
320 | { | |
321 | ||
322 | if (argc == 0 || morargc == argc) | |
323 | return; | |
324 | morargc = argc; | |
325 | merror("%d more file", argc); | |
326 | serror("%s@to edit", plural((long) argc)); | |
327 | } | |
328 | ||
329 | /* | |
330 | * Before edit of new file check that either an ! follows | |
331 | * or the file has not been changed. | |
332 | */ | |
333 | quickly() | |
334 | { | |
335 | ||
336 | if (exclam()) | |
337 | return (1); | |
338 | if (chng && dol > zero) { | |
339 | /* | |
340 | chng = 0; | |
341 | */ | |
342 | xchng = 0; | |
5a6c967e | 343 | serror("No write@since last change (:%s! overrides)", Command); |
7df0b7cf MH |
344 | } |
345 | return (0); | |
346 | } | |
347 | ||
348 | /* | |
349 | * Reset the flavor of the output to print mode with no numbering. | |
350 | */ | |
351 | resetflav() | |
352 | { | |
353 | ||
354 | if (inopen) | |
355 | return; | |
356 | listf = 0; | |
357 | nflag = 0; | |
358 | pflag = 0; | |
359 | poffset = 0; | |
360 | setflav(); | |
361 | } | |
362 | ||
363 | /* | |
364 | * Print an error message with a %s type argument to printf. | |
365 | * Message text comes from error message file. | |
366 | */ | |
367 | serror(str, cp) | |
368 | #ifdef lint | |
369 | register char *str; | |
370 | #else | |
371 | register int str; | |
372 | #endif | |
373 | char *cp; | |
374 | { | |
375 | ||
376 | error0(); | |
377 | smerror(str, cp); | |
378 | error1(str); | |
379 | } | |
380 | ||
381 | /* | |
382 | * Set the flavor of the output based on the flags given | |
383 | * and the number and list options to either number or not number lines | |
384 | * and either use normally decoded (ARPAnet standard) characters or list mode, | |
385 | * where end of lines are marked and tabs print as ^I. | |
386 | */ | |
387 | setflav() | |
388 | { | |
389 | ||
390 | if (inopen) | |
391 | return; | |
5a6c967e CH |
392 | ignorf(setnumb(nflag || value(NUMBER))); |
393 | ignorf(setlist(listf || value(LIST))); | |
7df0b7cf MH |
394 | setoutt(); |
395 | } | |
396 | ||
397 | /* | |
398 | * Skip white space and tell whether command ends then. | |
399 | */ | |
400 | skipend() | |
401 | { | |
402 | ||
403 | pastwh(); | |
d266c416 | 404 | return (endcmd(peekchar()) && peekchar() != '"'); |
7df0b7cf MH |
405 | } |
406 | ||
407 | /* | |
408 | * Set the command name for non-word commands. | |
409 | */ | |
410 | tailspec(c) | |
411 | int c; | |
412 | { | |
413 | static char foocmd[2]; | |
414 | ||
415 | foocmd[0] = c; | |
416 | Command = foocmd; | |
417 | } | |
418 | ||
419 | /* | |
420 | * Try to read off the rest of the command word. | |
421 | * If alphabetics follow, then this is not the command we seek. | |
422 | */ | |
423 | tail(comm) | |
424 | char *comm; | |
425 | { | |
426 | ||
427 | tailprim(comm, 1, 0); | |
428 | } | |
429 | ||
430 | tail2of(comm) | |
431 | char *comm; | |
432 | { | |
433 | ||
434 | tailprim(comm, 2, 0); | |
435 | } | |
436 | ||
437 | char tcommand[20]; | |
438 | ||
439 | tailprim(comm, i, notinvis) | |
440 | register char *comm; | |
441 | int i; | |
442 | bool notinvis; | |
443 | { | |
444 | register char *cp; | |
445 | register int c; | |
446 | ||
447 | Command = comm; | |
448 | for (cp = tcommand; i > 0; i--) | |
449 | *cp++ = *comm++; | |
450 | while (*comm && peekchar() == *comm) | |
5a6c967e | 451 | *cp++ = ex_getchar(), comm++; |
7df0b7cf MH |
452 | c = peekchar(); |
453 | if (notinvis || isalpha(c)) { | |
454 | /* | |
455 | * Of the trailing lp funny business, only dl and dp | |
456 | * survive the move from ed to ex. | |
457 | */ | |
458 | if (tcommand[0] == 'd' && any(c, "lp")) | |
459 | goto ret; | |
460 | if (tcommand[0] == 's' && any(c, "gcr")) | |
461 | goto ret; | |
462 | while (cp < &tcommand[19] && isalpha(peekchar())) | |
5a6c967e | 463 | *cp++ = ex_getchar(); |
7df0b7cf MH |
464 | *cp = 0; |
465 | if (notinvis) | |
466 | serror("What?|%s: No such command from open/visual", tcommand); | |
467 | else | |
468 | serror("What?|%s: Not an editor command", tcommand); | |
469 | } | |
470 | ret: | |
471 | *cp = 0; | |
472 | } | |
473 | ||
474 | /* | |
887e3e0d | 475 | * Continue after a : command from open/visual. |
7df0b7cf MH |
476 | */ |
477 | vcontin(ask) | |
478 | bool ask; | |
479 | { | |
480 | ||
481 | if (vcnt > 0) | |
482 | vcnt = -vcnt; | |
483 | if (inopen) { | |
484 | if (state != VISUAL) { | |
887e3e0d MH |
485 | /* |
486 | * We don't know what a shell command may have left on | |
487 | * the screen, so we move the cursor to the right place | |
488 | * and then put out a newline. But this makes an extra | |
489 | * blank line most of the time so we only do it for :sh | |
490 | * since the prompt gets left on the screen. | |
491 | * | |
492 | * BUG: :!echo longer than current line \\c | |
493 | * will screw it up, but be reasonable! | |
494 | */ | |
495 | if (state == CRTOPEN) { | |
496 | termreset(); | |
497 | vgoto(WECHO, 0); | |
498 | } | |
499 | if (!ask) { | |
500 | putch('\r'); | |
501 | putch('\n'); | |
502 | } | |
7df0b7cf MH |
503 | return; |
504 | } | |
505 | if (ask) { | |
506 | merror("[Hit return to continue] "); | |
507 | flush(); | |
508 | } | |
509 | #ifndef CBREAK | |
510 | vraw(); | |
511 | #endif | |
512 | if (ask) { | |
887e3e0d | 513 | #ifdef EATQS |
7df0b7cf MH |
514 | /* |
515 | * Gobble ^Q/^S since the tty driver should be eating | |
516 | * them (as far as the user can see) | |
517 | */ | |
518 | while (peekkey() == CTRL(Q) || peekkey() == CTRL(S)) | |
519 | ignore(getkey()); | |
887e3e0d MH |
520 | #endif |
521 | if(getkey() == ':') { | |
522 | /* Ugh. Extra newlines, but no other way */ | |
523 | putch('\n'); | |
524 | outline = WECHO; | |
7df0b7cf | 525 | ungetkey(':'); |
887e3e0d MH |
526 | } |
527 | } | |
528 | vclrech(1); | |
5a6c967e | 529 | if (Peek_key != ':') { |
887e3e0d | 530 | putpad(TI); |
d266c416 MH |
531 | tostart(); |
532 | /* replaced by ostart. | |
887e3e0d MH |
533 | putpad(VS); |
534 | putpad(KS); | |
d266c416 | 535 | */ |
7df0b7cf | 536 | } |
7df0b7cf MH |
537 | } |
538 | } | |
539 | ||
540 | /* | |
541 | * Put out a newline (before a shell escape) | |
542 | * if in open/visual. | |
543 | */ | |
544 | vnfl() | |
545 | { | |
546 | ||
547 | if (inopen) { | |
548 | if (state != VISUAL && state != CRTOPEN && destline <= WECHO) | |
549 | vclean(); | |
550 | else | |
551 | vmoveitup(1, 0); | |
552 | vgoto(WECHO, 0); | |
553 | vclrbyte(vtube[WECHO], WCOLS); | |
d266c416 MH |
554 | tostop(); |
555 | /* replaced by the ostop above | |
7df0b7cf MH |
556 | putpad(VE); |
557 | putpad(KE); | |
d266c416 | 558 | */ |
7df0b7cf MH |
559 | } |
560 | flush(); | |
561 | } |