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13281fa4 | 1 | /* $Header: toke.c,v 2.0.1.1 88/06/28 16:39:50 root Exp $ |
378cc40b LW |
2 | * |
3 | * $Log: toke.c,v $ | |
13281fa4 LW |
4 | * Revision 2.0.1.1 88/06/28 16:39:50 root |
5 | * patch1: tr/x/y/ can dump core if y is shorter than x | |
6 | * | |
378cc40b LW |
7 | * Revision 2.0 88/06/05 00:11:16 root |
8 | * Baseline version 2.0. | |
9 | * | |
10 | */ | |
11 | ||
12 | #include "EXTERN.h" | |
13 | #include "perl.h" | |
14 | #include "perly.h" | |
15 | ||
16 | #define CLINE (cmdline = (line < cmdline ? line : cmdline)) | |
17 | ||
18 | #define RETURN(retval) return (bufptr = s,(int)retval) | |
19 | #define OPERATOR(retval) return (expectterm = TRUE,bufptr = s,(int)retval) | |
20 | #define TERM(retval) return (CLINE, expectterm = FALSE,bufptr = s,(int)retval) | |
21 | #define LOOPX(f) return(yylval.ival=f,expectterm = FALSE,bufptr = s,(int)LOOPEX) | |
22 | #define UNI(f) return(yylval.ival = f,expectterm = TRUE,bufptr = s,(int)UNIOP) | |
23 | #define FTST(f) return(yylval.ival=f,expectterm = TRUE,bufptr = s,(int)FILETEST) | |
24 | #define FUN0(f) return(yylval.ival = f,expectterm = FALSE,bufptr = s,(int)FUNC0) | |
25 | #define FUN1(f) return(yylval.ival = f,expectterm = FALSE,bufptr = s,(int)FUNC1) | |
26 | #define FUN2(f) return(yylval.ival = f,expectterm = FALSE,bufptr = s,(int)FUNC2) | |
27 | #define FUN3(f) return(yylval.ival = f,expectterm = FALSE,bufptr = s,(int)FUNC3) | |
28 | #define SFUN(f) return(yylval.ival=f,expectterm = FALSE,bufptr = s,(int)STABFUN) | |
29 | #define LFUN(f) return(yylval.ival=f,expectterm = FALSE,bufptr = s,(int)LVALFUN) | |
30 | ||
31 | yylex() | |
32 | { | |
33 | register char *s = bufptr; | |
34 | register char *d; | |
35 | register int tmp; | |
36 | static bool in_format = FALSE; | |
37 | static bool firstline = TRUE; | |
38 | ||
39 | retry: | |
40 | #ifdef YYDEBUG | |
41 | if (yydebug) | |
42 | if (index(s,'\n')) | |
43 | fprintf(stderr,"Tokener at %s",s); | |
44 | else | |
45 | fprintf(stderr,"Tokener at %s\n",s); | |
46 | #endif | |
47 | switch (*s) { | |
48 | default: | |
49 | fprintf(stderr, | |
50 | "Unrecognized character %c in file %s line %ld--ignoring.\n", | |
51 | *s++,filename,(long)line); | |
52 | goto retry; | |
53 | case 0: | |
54 | s = str_get(linestr); | |
55 | *s = '\0'; | |
56 | if (firstline && (minus_n || minus_p)) { | |
57 | firstline = FALSE; | |
58 | str_set(linestr,"line: while (<>) {"); | |
59 | if (minus_a) | |
60 | str_cat(linestr,"@F=split(' ');"); | |
61 | s = str_get(linestr); | |
62 | goto retry; | |
63 | } | |
64 | if (!rsfp) | |
65 | RETURN(0); | |
66 | if (in_format) { | |
67 | yylval.formval = load_format(); /* leaves . in buffer */ | |
68 | in_format = FALSE; | |
69 | s = str_get(linestr); | |
70 | TERM(FORMLIST); | |
71 | } | |
72 | line++; | |
73 | if ((s = str_gets(linestr, rsfp)) == Nullch) { | |
74 | if (preprocess) | |
75 | pclose(rsfp); | |
76 | else if (rsfp != stdin) | |
77 | fclose(rsfp); | |
78 | rsfp = Nullfp; | |
79 | if (minus_n || minus_p) { | |
80 | str_set(linestr,minus_p ? "}continue{print;" : ""); | |
81 | str_cat(linestr,"}"); | |
82 | s = str_get(linestr); | |
83 | goto retry; | |
84 | } | |
85 | s = str_get(linestr); | |
86 | RETURN(0); | |
87 | } | |
88 | #ifdef DEBUG | |
89 | else if (firstline) { | |
90 | char *showinput(); | |
91 | s = showinput(); | |
92 | } | |
93 | #endif | |
94 | firstline = FALSE; | |
95 | goto retry; | |
96 | case ' ': case '\t': case '\f': | |
97 | s++; | |
98 | goto retry; | |
99 | case '\n': | |
100 | case '#': | |
101 | if (preprocess && s == str_get(linestr) && | |
102 | s[1] == ' ' && isdigit(s[2])) { | |
103 | line = atoi(s+2)-1; | |
104 | for (s += 2; isdigit(*s); s++) ; | |
105 | while (*s && isspace(*s)) s++; | |
106 | if (filename) | |
107 | safefree(filename); | |
108 | s[strlen(s)-1] = '\0'; /* wipe out newline */ | |
109 | if (*s == '"') { | |
110 | s++; | |
111 | s[strlen(s)-1] = '\0'; /* wipe out trailing quote */ | |
112 | } | |
113 | if (*s) | |
114 | filename = savestr(s); | |
115 | else | |
116 | filename = savestr(origfilename); | |
117 | s = str_get(linestr); | |
118 | } | |
119 | if (in_eval) { | |
120 | while (*s && *s != '\n') | |
121 | s++; | |
122 | if (*s) | |
123 | s++; | |
124 | line++; | |
125 | } | |
126 | else | |
127 | *s = '\0'; | |
128 | if (lex_newlines) | |
129 | RETURN('\n'); | |
130 | goto retry; | |
131 | case '-': | |
132 | if (s[1] && isalpha(s[1]) && !isalpha(s[2])) { | |
133 | s++; | |
134 | switch (*s++) { | |
135 | case 'r': FTST(O_FTEREAD); | |
136 | case 'w': FTST(O_FTEWRITE); | |
137 | case 'x': FTST(O_FTEEXEC); | |
138 | case 'o': FTST(O_FTEOWNED); | |
139 | case 'R': FTST(O_FTRREAD); | |
140 | case 'W': FTST(O_FTRWRITE); | |
141 | case 'X': FTST(O_FTREXEC); | |
142 | case 'O': FTST(O_FTROWNED); | |
143 | case 'e': FTST(O_FTIS); | |
144 | case 'z': FTST(O_FTZERO); | |
145 | case 's': FTST(O_FTSIZE); | |
146 | case 'f': FTST(O_FTFILE); | |
147 | case 'd': FTST(O_FTDIR); | |
148 | case 'l': FTST(O_FTLINK); | |
149 | case 'p': FTST(O_FTPIPE); | |
150 | case 'S': FTST(O_FTSOCK); | |
151 | case 'u': FTST(O_FTSUID); | |
152 | case 'g': FTST(O_FTSGID); | |
153 | case 'k': FTST(O_FTSVTX); | |
154 | case 'b': FTST(O_FTBLK); | |
155 | case 'c': FTST(O_FTCHR); | |
156 | case 't': FTST(O_FTTTY); | |
157 | case 'T': FTST(O_FTTEXT); | |
158 | case 'B': FTST(O_FTBINARY); | |
159 | default: | |
160 | s -= 2; | |
161 | break; | |
162 | } | |
163 | } | |
164 | /*FALL THROUGH*/ | |
165 | case '+': | |
166 | if (s[1] == *s) { | |
167 | s++; | |
168 | if (*s++ == '+') | |
169 | RETURN(INC); | |
170 | else | |
171 | RETURN(DEC); | |
172 | } | |
173 | /* FALL THROUGH */ | |
174 | case '*': | |
175 | case '%': | |
176 | case '^': | |
177 | case '~': | |
178 | case '(': | |
179 | case ',': | |
180 | case ':': | |
181 | case '[': | |
182 | tmp = *s++; | |
183 | OPERATOR(tmp); | |
184 | case '{': | |
185 | tmp = *s++; | |
186 | if (isspace(*s) || *s == '#') | |
187 | cmdline = NOLINE; /* invalidate current command line number */ | |
188 | OPERATOR(tmp); | |
189 | case ';': | |
190 | if (line < cmdline) | |
191 | cmdline = line; | |
192 | tmp = *s++; | |
193 | OPERATOR(tmp); | |
194 | case ')': | |
195 | case ']': | |
196 | tmp = *s++; | |
197 | TERM(tmp); | |
198 | case '}': | |
199 | tmp = *s++; | |
200 | for (d = s; *d == ' ' || *d == '\t'; d++) ; | |
201 | if (*d == '\n' || *d == '#') | |
202 | OPERATOR(tmp); /* block end */ | |
203 | else | |
204 | TERM(tmp); /* associative array end */ | |
205 | case '&': | |
206 | s++; | |
207 | tmp = *s++; | |
208 | if (tmp == '&') | |
209 | OPERATOR(ANDAND); | |
210 | s--; | |
211 | OPERATOR('&'); | |
212 | case '|': | |
213 | s++; | |
214 | tmp = *s++; | |
215 | if (tmp == '|') | |
216 | OPERATOR(OROR); | |
217 | s--; | |
218 | OPERATOR('|'); | |
219 | case '=': | |
220 | s++; | |
221 | tmp = *s++; | |
222 | if (tmp == '=') | |
223 | OPERATOR(EQ); | |
224 | if (tmp == '~') | |
225 | OPERATOR(MATCH); | |
226 | s--; | |
227 | OPERATOR('='); | |
228 | case '!': | |
229 | s++; | |
230 | tmp = *s++; | |
231 | if (tmp == '=') | |
232 | OPERATOR(NE); | |
233 | if (tmp == '~') | |
234 | OPERATOR(NMATCH); | |
235 | s--; | |
236 | OPERATOR('!'); | |
237 | case '<': | |
238 | if (expectterm) { | |
239 | s = scanstr(s); | |
240 | TERM(RSTRING); | |
241 | } | |
242 | s++; | |
243 | tmp = *s++; | |
244 | if (tmp == '<') | |
245 | OPERATOR(LS); | |
246 | if (tmp == '=') | |
247 | OPERATOR(LE); | |
248 | s--; | |
249 | OPERATOR('<'); | |
250 | case '>': | |
251 | s++; | |
252 | tmp = *s++; | |
253 | if (tmp == '>') | |
254 | OPERATOR(RS); | |
255 | if (tmp == '=') | |
256 | OPERATOR(GE); | |
257 | s--; | |
258 | OPERATOR('>'); | |
259 | ||
260 | #define SNARFWORD \ | |
261 | d = tokenbuf; \ | |
262 | while (isalpha(*s) || isdigit(*s) || *s == '_') \ | |
263 | *d++ = *s++; \ | |
264 | *d = '\0'; \ | |
265 | d = tokenbuf; | |
266 | ||
267 | case '$': | |
268 | if (s[1] == '#' && (isalpha(s[2]) || s[2] == '_')) { | |
269 | s++; | |
270 | s = scanreg(s,tokenbuf); | |
271 | yylval.stabval = aadd(stabent(tokenbuf,TRUE)); | |
272 | TERM(ARYLEN); | |
273 | } | |
274 | s = scanreg(s,tokenbuf); | |
275 | yylval.stabval = stabent(tokenbuf,TRUE); | |
276 | TERM(REG); | |
277 | ||
278 | case '@': | |
279 | s = scanreg(s,tokenbuf); | |
280 | yylval.stabval = aadd(stabent(tokenbuf,TRUE)); | |
281 | TERM(ARY); | |
282 | ||
283 | case '/': /* may either be division or pattern */ | |
284 | case '?': /* may either be conditional or pattern */ | |
285 | if (expectterm) { | |
286 | s = scanpat(s); | |
287 | TERM(PATTERN); | |
288 | } | |
289 | tmp = *s++; | |
290 | OPERATOR(tmp); | |
291 | ||
292 | case '.': | |
293 | if (!expectterm || !isdigit(s[1])) { | |
294 | s++; | |
295 | tmp = *s++; | |
296 | if (tmp == '.') | |
297 | OPERATOR(DOTDOT); | |
298 | s--; | |
299 | OPERATOR('.'); | |
300 | } | |
301 | /* FALL THROUGH */ | |
302 | case '0': case '1': case '2': case '3': case '4': | |
303 | case '5': case '6': case '7': case '8': case '9': | |
304 | case '\'': case '"': case '`': | |
305 | s = scanstr(s); | |
306 | TERM(RSTRING); | |
307 | ||
308 | case '_': | |
309 | SNARFWORD; | |
310 | yylval.cval = savestr(d); | |
311 | OPERATOR(WORD); | |
312 | case 'a': case 'A': | |
313 | SNARFWORD; | |
314 | yylval.cval = savestr(d); | |
315 | OPERATOR(WORD); | |
316 | case 'b': case 'B': | |
317 | SNARFWORD; | |
318 | yylval.cval = savestr(d); | |
319 | OPERATOR(WORD); | |
320 | case 'c': case 'C': | |
321 | SNARFWORD; | |
322 | if (strEQ(d,"continue")) | |
323 | OPERATOR(CONTINUE); | |
324 | if (strEQ(d,"chdir")) | |
325 | UNI(O_CHDIR); | |
326 | if (strEQ(d,"close")) | |
327 | OPERATOR(CLOSE); | |
328 | if (strEQ(d,"crypt")) | |
329 | FUN2(O_CRYPT); | |
330 | if (strEQ(d,"chop")) | |
331 | LFUN(O_CHOP); | |
332 | if (strEQ(d,"chmod")) { | |
333 | yylval.ival = O_CHMOD; | |
334 | OPERATOR(LISTOP); | |
335 | } | |
336 | if (strEQ(d,"chown")) { | |
337 | yylval.ival = O_CHOWN; | |
338 | OPERATOR(LISTOP); | |
339 | } | |
340 | yylval.cval = savestr(d); | |
341 | OPERATOR(WORD); | |
342 | case 'd': case 'D': | |
343 | SNARFWORD; | |
344 | if (strEQ(d,"do")) | |
345 | OPERATOR(DO); | |
346 | if (strEQ(d,"die")) | |
347 | UNI(O_DIE); | |
348 | if (strEQ(d,"delete")) | |
349 | OPERATOR(DELETE); | |
350 | yylval.cval = savestr(d); | |
351 | OPERATOR(WORD); | |
352 | case 'e': case 'E': | |
353 | SNARFWORD; | |
354 | if (strEQ(d,"else")) | |
355 | OPERATOR(ELSE); | |
356 | if (strEQ(d,"elsif")) { | |
357 | yylval.ival = line; | |
358 | OPERATOR(ELSIF); | |
359 | } | |
360 | if (strEQ(d,"eq") || strEQ(d,"EQ")) | |
361 | OPERATOR(SEQ); | |
362 | if (strEQ(d,"exit")) | |
363 | UNI(O_EXIT); | |
364 | if (strEQ(d,"eval")) { | |
365 | allstabs = TRUE; /* must initialize everything since */ | |
366 | UNI(O_EVAL); /* we don't know what will be used */ | |
367 | } | |
368 | if (strEQ(d,"eof")) | |
369 | TERM(FEOF); | |
370 | if (strEQ(d,"exp")) | |
371 | FUN1(O_EXP); | |
372 | if (strEQ(d,"each")) | |
373 | SFUN(O_EACH); | |
374 | if (strEQ(d,"exec")) { | |
375 | yylval.ival = O_EXEC; | |
376 | OPERATOR(LISTOP); | |
377 | } | |
378 | yylval.cval = savestr(d); | |
379 | OPERATOR(WORD); | |
380 | case 'f': case 'F': | |
381 | SNARFWORD; | |
382 | if (strEQ(d,"for")) | |
383 | OPERATOR(FOR); | |
384 | if (strEQ(d,"foreach")) | |
385 | OPERATOR(FOR); | |
386 | if (strEQ(d,"format")) { | |
387 | in_format = TRUE; | |
388 | OPERATOR(FORMAT); | |
389 | } | |
390 | if (strEQ(d,"fork")) | |
391 | FUN0(O_FORK); | |
392 | yylval.cval = savestr(d); | |
393 | OPERATOR(WORD); | |
394 | case 'g': case 'G': | |
395 | SNARFWORD; | |
396 | if (strEQ(d,"gt") || strEQ(d,"GT")) | |
397 | OPERATOR(SGT); | |
398 | if (strEQ(d,"ge") || strEQ(d,"GE")) | |
399 | OPERATOR(SGE); | |
400 | if (strEQ(d,"goto")) | |
401 | LOOPX(O_GOTO); | |
402 | if (strEQ(d,"gmtime")) | |
403 | FUN1(O_GMTIME); | |
404 | yylval.cval = savestr(d); | |
405 | OPERATOR(WORD); | |
406 | case 'h': case 'H': | |
407 | SNARFWORD; | |
408 | if (strEQ(d,"hex")) | |
409 | FUN1(O_HEX); | |
410 | yylval.cval = savestr(d); | |
411 | OPERATOR(WORD); | |
412 | case 'i': case 'I': | |
413 | SNARFWORD; | |
414 | if (strEQ(d,"if")) { | |
415 | yylval.ival = line; | |
416 | OPERATOR(IF); | |
417 | } | |
418 | if (strEQ(d,"index")) | |
419 | FUN2(O_INDEX); | |
420 | if (strEQ(d,"int")) | |
421 | FUN1(O_INT); | |
422 | yylval.cval = savestr(d); | |
423 | OPERATOR(WORD); | |
424 | case 'j': case 'J': | |
425 | SNARFWORD; | |
426 | if (strEQ(d,"join")) | |
427 | OPERATOR(JOIN); | |
428 | yylval.cval = savestr(d); | |
429 | OPERATOR(WORD); | |
430 | case 'k': case 'K': | |
431 | SNARFWORD; | |
432 | if (strEQ(d,"keys")) | |
433 | SFUN(O_KEYS); | |
434 | if (strEQ(d,"kill")) { | |
435 | yylval.ival = O_KILL; | |
436 | OPERATOR(LISTOP); | |
437 | } | |
438 | yylval.cval = savestr(d); | |
439 | OPERATOR(WORD); | |
440 | case 'l': case 'L': | |
441 | SNARFWORD; | |
442 | if (strEQ(d,"last")) | |
443 | LOOPX(O_LAST); | |
444 | if (strEQ(d,"local")) | |
445 | OPERATOR(LOCAL); | |
446 | if (strEQ(d,"length")) | |
447 | FUN1(O_LENGTH); | |
448 | if (strEQ(d,"lt") || strEQ(d,"LT")) | |
449 | OPERATOR(SLT); | |
450 | if (strEQ(d,"le") || strEQ(d,"LE")) | |
451 | OPERATOR(SLE); | |
452 | if (strEQ(d,"localtime")) | |
453 | FUN1(O_LOCALTIME); | |
454 | if (strEQ(d,"log")) | |
455 | FUN1(O_LOG); | |
456 | if (strEQ(d,"link")) | |
457 | FUN2(O_LINK); | |
458 | yylval.cval = savestr(d); | |
459 | OPERATOR(WORD); | |
460 | case 'm': case 'M': | |
461 | SNARFWORD; | |
462 | if (strEQ(d,"m")) { | |
463 | s = scanpat(s-1); | |
464 | TERM(PATTERN); | |
465 | } | |
466 | yylval.cval = savestr(d); | |
467 | OPERATOR(WORD); | |
468 | case 'n': case 'N': | |
469 | SNARFWORD; | |
470 | if (strEQ(d,"next")) | |
471 | LOOPX(O_NEXT); | |
472 | if (strEQ(d,"ne") || strEQ(d,"NE")) | |
473 | OPERATOR(SNE); | |
474 | yylval.cval = savestr(d); | |
475 | OPERATOR(WORD); | |
476 | case 'o': case 'O': | |
477 | SNARFWORD; | |
478 | if (strEQ(d,"open")) | |
479 | OPERATOR(OPEN); | |
480 | if (strEQ(d,"ord")) | |
481 | FUN1(O_ORD); | |
482 | if (strEQ(d,"oct")) | |
483 | FUN1(O_OCT); | |
484 | yylval.cval = savestr(d); | |
485 | OPERATOR(WORD); | |
486 | case 'p': case 'P': | |
487 | SNARFWORD; | |
488 | if (strEQ(d,"print")) { | |
489 | yylval.ival = O_PRINT; | |
490 | OPERATOR(LISTOP); | |
491 | } | |
492 | if (strEQ(d,"printf")) { | |
493 | yylval.ival = O_PRTF; | |
494 | OPERATOR(LISTOP); | |
495 | } | |
496 | if (strEQ(d,"push")) { | |
497 | yylval.ival = O_PUSH; | |
498 | OPERATOR(PUSH); | |
499 | } | |
500 | if (strEQ(d,"pop")) | |
501 | OPERATOR(POP); | |
502 | yylval.cval = savestr(d); | |
503 | OPERATOR(WORD); | |
504 | case 'q': case 'Q': | |
505 | SNARFWORD; | |
506 | yylval.cval = savestr(d); | |
507 | OPERATOR(WORD); | |
508 | case 'r': case 'R': | |
509 | SNARFWORD; | |
510 | if (strEQ(d,"reset")) | |
511 | UNI(O_RESET); | |
512 | if (strEQ(d,"redo")) | |
513 | LOOPX(O_REDO); | |
514 | if (strEQ(d,"rename")) | |
515 | FUN2(O_RENAME); | |
516 | yylval.cval = savestr(d); | |
517 | OPERATOR(WORD); | |
518 | case 's': case 'S': | |
519 | SNARFWORD; | |
520 | if (strEQ(d,"s")) { | |
521 | s = scansubst(s); | |
522 | TERM(SUBST); | |
523 | } | |
524 | if (strEQ(d,"shift")) | |
525 | TERM(SHIFT); | |
526 | if (strEQ(d,"split")) | |
527 | TERM(SPLIT); | |
528 | if (strEQ(d,"substr")) | |
529 | FUN3(O_SUBSTR); | |
530 | if (strEQ(d,"sprintf")) | |
531 | OPERATOR(SPRINTF); | |
532 | if (strEQ(d,"sub")) | |
533 | OPERATOR(SUB); | |
534 | if (strEQ(d,"select")) | |
535 | OPERATOR(SELECT); | |
536 | if (strEQ(d,"seek")) | |
537 | OPERATOR(SEEK); | |
538 | if (strEQ(d,"stat")) | |
539 | OPERATOR(STAT); | |
540 | if (strEQ(d,"study")) { | |
541 | sawstudy++; | |
542 | LFUN(O_STUDY); | |
543 | } | |
544 | if (strEQ(d,"sqrt")) | |
545 | FUN1(O_SQRT); | |
546 | if (strEQ(d,"sleep")) | |
547 | UNI(O_SLEEP); | |
548 | if (strEQ(d,"system")) { | |
549 | yylval.ival = O_SYSTEM; | |
550 | OPERATOR(LISTOP); | |
551 | } | |
552 | if (strEQ(d,"symlink")) | |
553 | FUN2(O_SYMLINK); | |
554 | if (strEQ(d,"sort")) { | |
555 | yylval.ival = O_SORT; | |
556 | OPERATOR(LISTOP); | |
557 | } | |
558 | yylval.cval = savestr(d); | |
559 | OPERATOR(WORD); | |
560 | case 't': case 'T': | |
561 | SNARFWORD; | |
562 | if (strEQ(d,"tr")) { | |
563 | s = scantrans(s); | |
564 | TERM(TRANS); | |
565 | } | |
566 | if (strEQ(d,"tell")) | |
567 | TERM(TELL); | |
568 | if (strEQ(d,"time")) | |
569 | FUN0(O_TIME); | |
570 | if (strEQ(d,"times")) | |
571 | FUN0(O_TMS); | |
572 | yylval.cval = savestr(d); | |
573 | OPERATOR(WORD); | |
574 | case 'u': case 'U': | |
575 | SNARFWORD; | |
576 | if (strEQ(d,"using")) | |
577 | OPERATOR(USING); | |
578 | if (strEQ(d,"until")) { | |
579 | yylval.ival = line; | |
580 | OPERATOR(UNTIL); | |
581 | } | |
582 | if (strEQ(d,"unless")) { | |
583 | yylval.ival = line; | |
584 | OPERATOR(UNLESS); | |
585 | } | |
586 | if (strEQ(d,"umask")) | |
587 | FUN1(O_UMASK); | |
588 | if (strEQ(d,"unshift")) { | |
589 | yylval.ival = O_UNSHIFT; | |
590 | OPERATOR(PUSH); | |
591 | } | |
592 | if (strEQ(d,"unlink")) { | |
593 | yylval.ival = O_UNLINK; | |
594 | OPERATOR(LISTOP); | |
595 | } | |
596 | if (strEQ(d,"utime")) { | |
597 | yylval.ival = O_UTIME; | |
598 | OPERATOR(LISTOP); | |
599 | } | |
600 | yylval.cval = savestr(d); | |
601 | OPERATOR(WORD); | |
602 | case 'v': case 'V': | |
603 | SNARFWORD; | |
604 | if (strEQ(d,"values")) | |
605 | SFUN(O_VALUES); | |
606 | yylval.cval = savestr(d); | |
607 | OPERATOR(WORD); | |
608 | case 'w': case 'W': | |
609 | SNARFWORD; | |
610 | if (strEQ(d,"write")) | |
611 | TERM(WRITE); | |
612 | if (strEQ(d,"while")) { | |
613 | yylval.ival = line; | |
614 | OPERATOR(WHILE); | |
615 | } | |
616 | if (strEQ(d,"wait")) | |
617 | FUN0(O_WAIT); | |
618 | yylval.cval = savestr(d); | |
619 | OPERATOR(WORD); | |
620 | case 'x': case 'X': | |
621 | SNARFWORD; | |
622 | if (!expectterm && strEQ(d,"x")) | |
623 | OPERATOR('x'); | |
624 | yylval.cval = savestr(d); | |
625 | OPERATOR(WORD); | |
626 | case 'y': case 'Y': | |
627 | SNARFWORD; | |
628 | if (strEQ(d,"y")) { | |
629 | s = scantrans(s); | |
630 | TERM(TRANS); | |
631 | } | |
632 | yylval.cval = savestr(d); | |
633 | OPERATOR(WORD); | |
634 | case 'z': case 'Z': | |
635 | SNARFWORD; | |
636 | yylval.cval = savestr(d); | |
637 | OPERATOR(WORD); | |
638 | } | |
639 | } | |
640 | ||
641 | char * | |
642 | scanreg(s,dest) | |
643 | register char *s; | |
644 | char *dest; | |
645 | { | |
646 | register char *d; | |
647 | ||
648 | s++; | |
649 | d = dest; | |
650 | if (isdigit(*s)) { | |
651 | while (isdigit(*s) || *s == '_') | |
652 | *d++ = *s++; | |
653 | } | |
654 | else { | |
655 | while (isalpha(*s) || isdigit(*s) || *s == '_') | |
656 | *d++ = *s++; | |
657 | } | |
658 | *d = '\0'; | |
659 | d = dest; | |
660 | if (!*d) { | |
661 | *d = *s++; | |
662 | if (*d == '{') { | |
663 | d = dest; | |
664 | while (*s && *s != '}') | |
665 | *d++ = *s++; | |
666 | *d = '\0'; | |
667 | d = dest; | |
668 | if (*s) | |
669 | s++; | |
670 | } | |
671 | else | |
672 | d[1] = '\0'; | |
673 | } | |
674 | if (*d == '^' && !isspace(*s)) | |
675 | *d = *s++ & 31; | |
676 | return s; | |
677 | } | |
678 | ||
679 | STR * | |
680 | scanconst(string) | |
681 | char *string; | |
682 | { | |
683 | register STR *retstr; | |
684 | register char *t; | |
685 | register char *d; | |
686 | ||
687 | if (index(string,'|')) { | |
688 | return Nullstr; | |
689 | } | |
690 | retstr = str_make(string); | |
691 | t = str_get(retstr); | |
692 | *(long*)&retstr->str_nval = 100; | |
693 | for (d=t; *d; ) { | |
694 | switch (*d) { | |
695 | case '.': case '[': case '$': case '(': case ')': case '|': | |
696 | *d = '\0'; | |
697 | break; | |
698 | case '\\': | |
699 | if (index("wWbB0123456789sSdD",d[1])) { | |
700 | *d = '\0'; | |
701 | break; | |
702 | } | |
703 | strcpy(d,d+1); | |
704 | switch(*d) { | |
705 | case 'n': | |
706 | *d = '\n'; | |
707 | break; | |
708 | case 't': | |
709 | *d = '\t'; | |
710 | break; | |
711 | case 'f': | |
712 | *d = '\f'; | |
713 | break; | |
714 | case 'r': | |
715 | *d = '\r'; | |
716 | break; | |
717 | } | |
718 | /* FALL THROUGH */ | |
719 | default: | |
720 | if (d[1] == '*' || d[1] == '+' || d[1] == '?') { | |
721 | *d = '\0'; | |
722 | break; | |
723 | } | |
724 | d++; | |
725 | } | |
726 | } | |
727 | if (!*t) { | |
728 | str_free(retstr); | |
729 | return Nullstr; | |
730 | } | |
731 | retstr->str_cur = strlen(retstr->str_ptr); | |
732 | return retstr; | |
733 | } | |
734 | ||
735 | char * | |
736 | scanpat(s) | |
737 | register char *s; | |
738 | { | |
739 | register SPAT *spat = (SPAT *) safemalloc(sizeof (SPAT)); | |
740 | register char *d; | |
741 | ||
742 | bzero((char *)spat, sizeof(SPAT)); | |
743 | spat->spat_next = spat_root; /* link into spat list */ | |
744 | spat_root = spat; | |
745 | ||
746 | switch (*s++) { | |
747 | case 'm': | |
748 | s++; | |
749 | break; | |
750 | case '/': | |
751 | break; | |
752 | case '?': | |
753 | spat->spat_flags |= SPAT_ONCE; | |
754 | break; | |
755 | default: | |
756 | fatal("panic: scanpat"); | |
757 | } | |
758 | s = cpytill(tokenbuf,s,s[-1]); | |
759 | if (!*s) | |
760 | fatal("Search pattern not terminated"); | |
761 | s++; | |
762 | if (*s == 'i') { | |
763 | s++; | |
764 | spat->spat_flags |= SPAT_FOLD; | |
765 | } | |
766 | for (d=tokenbuf; *d; d++) { | |
767 | if (*d == '$' && d[1] && d[-1] != '\\' && d[1] != '|') { | |
768 | register ARG *arg; | |
769 | ||
770 | spat->spat_runtime = arg = op_new(1); | |
771 | arg->arg_type = O_ITEM; | |
772 | arg[1].arg_type = A_DOUBLE; | |
773 | arg[1].arg_ptr.arg_str = str_make(tokenbuf); | |
774 | goto got_pat; /* skip compiling for now */ | |
775 | } | |
776 | } | |
777 | if (!(spat->spat_flags & SPAT_FOLD)) { | |
778 | if (*tokenbuf == '^') { | |
779 | spat->spat_short = scanconst(tokenbuf+1); | |
780 | if (spat->spat_short) { | |
781 | spat->spat_slen = strlen(spat->spat_short->str_ptr); | |
782 | if (spat->spat_slen == strlen(tokenbuf+1)) | |
783 | spat->spat_flags |= SPAT_ALL; | |
784 | } | |
785 | } | |
786 | else { | |
787 | spat->spat_flags |= SPAT_SCANFIRST; | |
788 | spat->spat_short = scanconst(tokenbuf); | |
789 | if (spat->spat_short) { | |
790 | spat->spat_slen = strlen(spat->spat_short->str_ptr); | |
791 | if (spat->spat_slen == strlen(tokenbuf)) | |
792 | spat->spat_flags |= SPAT_ALL; | |
793 | } | |
794 | } | |
795 | } | |
796 | spat->spat_regexp = regcomp(tokenbuf,spat->spat_flags & SPAT_FOLD,1); | |
797 | hoistmust(spat); | |
798 | got_pat: | |
799 | yylval.arg = make_match(O_MATCH,stab2arg(A_STAB,defstab),spat); | |
800 | return s; | |
801 | } | |
802 | ||
803 | char * | |
804 | scansubst(s) | |
805 | register char *s; | |
806 | { | |
807 | register SPAT *spat = (SPAT *) safemalloc(sizeof (SPAT)); | |
808 | register char *d; | |
809 | ||
810 | bzero((char *)spat, sizeof(SPAT)); | |
811 | spat->spat_next = spat_root; /* link into spat list */ | |
812 | spat_root = spat; | |
813 | ||
814 | s = cpytill(tokenbuf,s+1,*s); | |
815 | if (!*s) | |
816 | fatal("Substitution pattern not terminated"); | |
817 | for (d=tokenbuf; *d; d++) { | |
818 | if (*d == '$' && d[1] && d[-1] != '\\' && d[1] != '|') { | |
819 | register ARG *arg; | |
820 | ||
821 | spat->spat_runtime = arg = op_new(1); | |
822 | arg->arg_type = O_ITEM; | |
823 | arg[1].arg_type = A_DOUBLE; | |
824 | arg[1].arg_ptr.arg_str = str_make(tokenbuf); | |
825 | goto get_repl; /* skip compiling for now */ | |
826 | } | |
827 | } | |
828 | if (*tokenbuf == '^') { | |
829 | spat->spat_short = scanconst(tokenbuf+1); | |
830 | if (spat->spat_short) | |
831 | spat->spat_slen = strlen(spat->spat_short->str_ptr); | |
832 | } | |
833 | else { | |
834 | spat->spat_flags |= SPAT_SCANFIRST; | |
835 | spat->spat_short = scanconst(tokenbuf); | |
836 | if (spat->spat_short) | |
837 | spat->spat_slen = strlen(spat->spat_short->str_ptr); | |
838 | } | |
839 | d = savestr(tokenbuf); | |
840 | get_repl: | |
841 | s = scanstr(s); | |
842 | if (!*s) | |
843 | fatal("Substitution replacement not terminated"); | |
844 | spat->spat_repl = yylval.arg; | |
845 | spat->spat_flags |= SPAT_ONCE; | |
846 | while (*s == 'g' || *s == 'i') { | |
847 | if (*s == 'g') { | |
848 | s++; | |
849 | spat->spat_flags &= ~SPAT_ONCE; | |
850 | } | |
851 | if (*s == 'i') { | |
852 | s++; | |
853 | spat->spat_flags |= SPAT_FOLD; | |
854 | } | |
855 | } | |
856 | if (!spat->spat_runtime) { | |
857 | spat->spat_regexp = regcomp(d, spat->spat_flags & SPAT_FOLD,1); | |
858 | hoistmust(spat); | |
859 | safefree(d); | |
860 | } | |
861 | if (spat->spat_flags & SPAT_FOLD) { /* Oops, disable optimization */ | |
862 | str_free(spat->spat_short); | |
863 | spat->spat_short = Nullstr; | |
864 | spat->spat_slen = 0; | |
865 | } | |
866 | yylval.arg = make_match(O_SUBST,stab2arg(A_STAB,defstab),spat); | |
867 | return s; | |
868 | } | |
869 | ||
870 | hoistmust(spat) | |
871 | register SPAT *spat; | |
872 | { | |
873 | if (spat->spat_regexp->regmust) { /* is there a better short-circuit? */ | |
874 | if (spat->spat_short && | |
875 | strEQ(spat->spat_short->str_ptr,spat->spat_regexp->regmust->str_ptr)){ | |
876 | if (spat->spat_flags & SPAT_SCANFIRST) { | |
877 | str_free(spat->spat_short); | |
878 | spat->spat_short = Nullstr; | |
879 | } | |
880 | else { | |
881 | str_free(spat->spat_regexp->regmust); | |
882 | spat->spat_regexp->regmust = Nullstr; | |
883 | return; | |
884 | } | |
885 | } | |
886 | if (!spat->spat_short || /* promote the better string */ | |
887 | ((spat->spat_flags & SPAT_SCANFIRST) && | |
888 | (spat->spat_short->str_cur < spat->spat_regexp->regmust->str_cur) )){ | |
889 | str_free(spat->spat_short); /* ok if null */ | |
890 | spat->spat_short = spat->spat_regexp->regmust; | |
891 | spat->spat_regexp->regmust = Nullstr; | |
892 | spat->spat_flags |= SPAT_SCANFIRST; | |
893 | } | |
894 | } | |
895 | } | |
896 | ||
897 | char * | |
898 | expand_charset(s) | |
899 | register char *s; | |
900 | { | |
901 | char t[512]; | |
902 | register char *d = t; | |
903 | register int i; | |
904 | ||
905 | while (*s) { | |
906 | if (s[1] == '-' && s[2]) { | |
907 | for (i = s[0]; i <= s[2]; i++) | |
908 | *d++ = i; | |
909 | s += 3; | |
910 | } | |
911 | else | |
912 | *d++ = *s++; | |
913 | } | |
914 | *d = '\0'; | |
915 | return savestr(t); | |
916 | } | |
917 | ||
918 | char * | |
919 | scantrans(s) | |
920 | register char *s; | |
921 | { | |
922 | ARG *arg = | |
923 | l(make_op(O_TRANS,2,stab2arg(A_STAB,defstab),Nullarg,Nullarg,0)); | |
924 | register char *t; | |
925 | register char *r; | |
926 | register char *tbl = safemalloc(256); | |
927 | register int i; | |
13281fa4 | 928 | register int j; |
378cc40b LW |
929 | |
930 | arg[2].arg_type = A_NULL; | |
931 | arg[2].arg_ptr.arg_cval = tbl; | |
932 | for (i=0; i<256; i++) | |
933 | tbl[i] = 0; | |
934 | s = scanstr(s); | |
935 | if (!*s) | |
936 | fatal("Translation pattern not terminated"); | |
937 | t = expand_charset(str_get(yylval.arg[1].arg_ptr.arg_str)); | |
938 | free_arg(yylval.arg); | |
939 | s = scanstr(s-1); | |
940 | if (!*s) | |
941 | fatal("Translation replacement not terminated"); | |
942 | r = expand_charset(str_get(yylval.arg[1].arg_ptr.arg_str)); | |
943 | free_arg(yylval.arg); | |
944 | yylval.arg = arg; | |
945 | if (!*r) { | |
946 | safefree(r); | |
947 | r = t; | |
948 | } | |
13281fa4 LW |
949 | for (i = 0, j = 0; t[i]; i++,j++) { |
950 | if (!r[j]) | |
951 | --j; | |
952 | tbl[t[i] & 0377] = r[j]; | |
378cc40b LW |
953 | } |
954 | if (r != t) | |
955 | safefree(r); | |
956 | safefree(t); | |
957 | return s; | |
958 | } | |
959 | ||
960 | char * | |
961 | scanstr(s) | |
962 | register char *s; | |
963 | { | |
964 | register char term; | |
965 | register char *d; | |
966 | register ARG *arg; | |
967 | register bool makesingle = FALSE; | |
968 | register STAB *stab; | |
969 | char *leave = "\\$nrtfb0123456789"; /* which backslash sequences to keep */ | |
970 | ||
971 | arg = op_new(1); | |
972 | yylval.arg = arg; | |
973 | arg->arg_type = O_ITEM; | |
974 | ||
975 | switch (*s) { | |
976 | default: /* a substitution replacement */ | |
977 | arg[1].arg_type = A_DOUBLE; | |
978 | makesingle = TRUE; /* maybe disable runtime scanning */ | |
979 | term = *s; | |
980 | if (term == '\'') | |
981 | leave = Nullch; | |
982 | goto snarf_it; | |
983 | case '0': | |
984 | { | |
985 | long i; | |
986 | int shift; | |
987 | ||
988 | arg[1].arg_type = A_SINGLE; | |
989 | if (s[1] == 'x') { | |
990 | shift = 4; | |
991 | s += 2; | |
992 | } | |
993 | else if (s[1] == '.') | |
994 | goto decimal; | |
995 | else | |
996 | shift = 3; | |
997 | i = 0; | |
998 | for (;;) { | |
999 | switch (*s) { | |
1000 | default: | |
1001 | goto out; | |
1002 | case '8': case '9': | |
1003 | if (shift != 4) | |
1004 | fatal("Illegal octal digit"); | |
1005 | /* FALL THROUGH */ | |
1006 | case '0': case '1': case '2': case '3': case '4': | |
1007 | case '5': case '6': case '7': | |
1008 | i <<= shift; | |
1009 | i += *s++ & 15; | |
1010 | break; | |
1011 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': | |
1012 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
1013 | if (shift != 4) | |
1014 | goto out; | |
1015 | i <<= 4; | |
1016 | i += (*s++ & 7) + 9; | |
1017 | break; | |
1018 | } | |
1019 | } | |
1020 | out: | |
1021 | sprintf(tokenbuf,"%ld",i); | |
1022 | arg[1].arg_ptr.arg_str = str_make(tokenbuf); | |
1023 | } | |
1024 | break; | |
1025 | case '1': case '2': case '3': case '4': case '5': | |
1026 | case '6': case '7': case '8': case '9': case '.': | |
1027 | decimal: | |
1028 | arg[1].arg_type = A_SINGLE; | |
1029 | d = tokenbuf; | |
1030 | while (isdigit(*s) || *s == '_') { | |
1031 | if (*s == '_') | |
1032 | s++; | |
1033 | else | |
1034 | *d++ = *s++; | |
1035 | } | |
1036 | if (*s == '.' && index("0123456789eE",s[1])) { | |
1037 | *d++ = *s++; | |
1038 | while (isdigit(*s) || *s == '_') { | |
1039 | if (*s == '_') | |
1040 | s++; | |
1041 | else | |
1042 | *d++ = *s++; | |
1043 | } | |
1044 | } | |
1045 | if (index("eE",*s) && index("+-0123456789",s[1])) { | |
1046 | *d++ = *s++; | |
1047 | if (*s == '+' || *s == '-') | |
1048 | *d++ = *s++; | |
1049 | while (isdigit(*s)) | |
1050 | *d++ = *s++; | |
1051 | } | |
1052 | *d = '\0'; | |
1053 | arg[1].arg_ptr.arg_str = str_make(tokenbuf); | |
1054 | break; | |
1055 | case '\'': | |
1056 | arg[1].arg_type = A_SINGLE; | |
1057 | term = *s; | |
1058 | leave = Nullch; | |
1059 | goto snarf_it; | |
1060 | ||
1061 | case '<': | |
1062 | d = tokenbuf; | |
1063 | s = cpytill(d,s+1,'>'); | |
1064 | if (*s) | |
1065 | s++; | |
1066 | if (*d == '$') d++; | |
1067 | while (*d && (isalpha(*d) || isdigit(*d) || *d == '_')) d++; | |
1068 | if (*d) { | |
1069 | d = tokenbuf; | |
1070 | arg[1].arg_type = A_GLOB; | |
1071 | d = savestr(d); | |
1072 | arg[1].arg_ptr.arg_stab = stab = genstab(); | |
1073 | stab->stab_io = stio_new(); | |
1074 | stab->stab_val = str_make(d); | |
1075 | } | |
1076 | else { | |
1077 | d = tokenbuf; | |
1078 | if (!*d) | |
1079 | strcpy(d,"ARGV"); | |
1080 | if (*d == '$') { | |
1081 | arg[1].arg_type = A_INDREAD; | |
1082 | arg[1].arg_ptr.arg_stab = stabent(d+1,TRUE); | |
1083 | } | |
1084 | else { | |
1085 | arg[1].arg_type = A_READ; | |
1086 | if (rsfp == stdin && strEQ(d,"stdin")) | |
1087 | fatal("Can't get both program and data from <stdin>"); | |
1088 | arg[1].arg_ptr.arg_stab = stabent(d,TRUE); | |
1089 | arg[1].arg_ptr.arg_stab->stab_io = stio_new(); | |
1090 | if (strEQ(d,"ARGV")) { | |
1091 | aadd(arg[1].arg_ptr.arg_stab); | |
1092 | arg[1].arg_ptr.arg_stab->stab_io->flags |= | |
1093 | IOF_ARGV|IOF_START; | |
1094 | } | |
1095 | } | |
1096 | } | |
1097 | break; | |
1098 | case '"': | |
1099 | arg[1].arg_type = A_DOUBLE; | |
1100 | makesingle = TRUE; /* maybe disable runtime scanning */ | |
1101 | term = *s; | |
1102 | goto snarf_it; | |
1103 | case '`': | |
1104 | arg[1].arg_type = A_BACKTICK; | |
1105 | term = *s; | |
1106 | snarf_it: | |
1107 | { | |
1108 | STR *tmpstr; | |
1109 | int sqstart = line; | |
1110 | char *tmps; | |
1111 | ||
1112 | tmpstr = str_new(strlen(s)); | |
1113 | s = str_append_till(tmpstr,s+1,term,leave); | |
1114 | while (!*s) { /* multiple line string? */ | |
1115 | s = str_gets(linestr, rsfp); | |
1116 | if (!s) { | |
1117 | line = sqstart; | |
1118 | fatal("EOF in string"); | |
1119 | } | |
1120 | line++; | |
1121 | s = str_append_till(tmpstr,s,term,leave); | |
1122 | } | |
1123 | s++; | |
1124 | if (term == '\'') { | |
1125 | arg[1].arg_ptr.arg_str = tmpstr; | |
1126 | break; | |
1127 | } | |
1128 | tmps = s; | |
1129 | s = tmpstr->str_ptr; | |
1130 | while (*s) { /* see if we can make SINGLE */ | |
1131 | if (*s == '\\' && s[1] && isdigit(s[1]) && !isdigit(s[2]) && | |
1132 | !index("`\"",term) ) | |
1133 | *s = '$'; /* grandfather \digit in subst */ | |
1134 | if (*s == '$' && s[1] && s[1] != ')' && s[1] != '|') { | |
1135 | makesingle = FALSE; /* force interpretation */ | |
1136 | } | |
1137 | else if (*s == '\\' && s[1]) { | |
1138 | s++; | |
1139 | } | |
1140 | s++; | |
1141 | } | |
1142 | s = d = tmpstr->str_ptr; /* assuming shrinkage only */ | |
1143 | while (*s) { | |
1144 | if (*s == '$' && s[1] && s[1] != ')' && s[1] != '|') { | |
1145 | int len; | |
1146 | ||
1147 | len = scanreg(s,tokenbuf) - s; | |
1148 | stabent(tokenbuf,TRUE); /* make sure it's created */ | |
1149 | while (len--) | |
1150 | *d++ = *s++; | |
1151 | continue; | |
1152 | } | |
1153 | else if (*s == '\\' && s[1]) { | |
1154 | s++; | |
1155 | switch (*s) { | |
1156 | default: | |
1157 | if (!makesingle && (!leave || index(leave,*s))) | |
1158 | *d++ = '\\'; | |
1159 | *d++ = *s++; | |
1160 | continue; | |
1161 | case '0': case '1': case '2': case '3': | |
1162 | case '4': case '5': case '6': case '7': | |
1163 | *d = *s++ - '0'; | |
1164 | if (index("01234567",*s)) { | |
1165 | *d <<= 3; | |
1166 | *d += *s++ - '0'; | |
1167 | } | |
1168 | if (index("01234567",*s)) { | |
1169 | *d <<= 3; | |
1170 | *d += *s++ - '0'; | |
1171 | } | |
1172 | d++; | |
1173 | continue; | |
1174 | case 'b': | |
1175 | *d++ = '\b'; | |
1176 | break; | |
1177 | case 'n': | |
1178 | *d++ = '\n'; | |
1179 | break; | |
1180 | case 'r': | |
1181 | *d++ = '\r'; | |
1182 | break; | |
1183 | case 'f': | |
1184 | *d++ = '\f'; | |
1185 | break; | |
1186 | case 't': | |
1187 | *d++ = '\t'; | |
1188 | break; | |
1189 | } | |
1190 | s++; | |
1191 | continue; | |
1192 | } | |
1193 | *d++ = *s++; | |
1194 | } | |
1195 | *d = '\0'; | |
1196 | ||
1197 | if (arg[1].arg_type == A_DOUBLE && makesingle) | |
1198 | arg[1].arg_type = A_SINGLE; /* now we can optimize on it */ | |
1199 | ||
1200 | tmpstr->str_cur = d - tmpstr->str_ptr; /* XXX cheat */ | |
1201 | arg[1].arg_ptr.arg_str = tmpstr; | |
1202 | s = tmps; | |
1203 | break; | |
1204 | } | |
1205 | } | |
1206 | return s; | |
1207 | } | |
1208 | ||
1209 | FCMD * | |
1210 | load_format() | |
1211 | { | |
1212 | FCMD froot; | |
1213 | FCMD *flinebeg; | |
1214 | register FCMD *fprev = &froot; | |
1215 | register FCMD *fcmd; | |
1216 | register char *s; | |
1217 | register char *t; | |
1218 | register char tmpchar; | |
1219 | bool noblank; | |
1220 | ||
1221 | while ((s = str_gets(linestr,rsfp)) != Nullch) { | |
1222 | line++; | |
1223 | if (strEQ(s,".\n")) { | |
1224 | bufptr = s; | |
1225 | return froot.f_next; | |
1226 | } | |
1227 | if (*s == '#') | |
1228 | continue; | |
1229 | flinebeg = Nullfcmd; | |
1230 | noblank = FALSE; | |
1231 | while (*s) { | |
1232 | fcmd = (FCMD *)safemalloc(sizeof (FCMD)); | |
1233 | bzero((char*)fcmd, sizeof (FCMD)); | |
1234 | fprev->f_next = fcmd; | |
1235 | fprev = fcmd; | |
1236 | for (t=s; *t && *t != '@' && *t != '^'; t++) { | |
1237 | if (*t == '~') { | |
1238 | noblank = TRUE; | |
1239 | *t = ' '; | |
1240 | } | |
1241 | } | |
1242 | tmpchar = *t; | |
1243 | *t = '\0'; | |
1244 | fcmd->f_pre = savestr(s); | |
1245 | fcmd->f_presize = strlen(s); | |
1246 | *t = tmpchar; | |
1247 | s = t; | |
1248 | if (!*s) { | |
1249 | if (noblank) | |
1250 | fcmd->f_flags |= FC_NOBLANK; | |
1251 | break; | |
1252 | } | |
1253 | if (!flinebeg) | |
1254 | flinebeg = fcmd; /* start values here */ | |
1255 | if (*s++ == '^') | |
1256 | fcmd->f_flags |= FC_CHOP; /* for doing text filling */ | |
1257 | switch (*s) { | |
1258 | case '*': | |
1259 | fcmd->f_type = F_LINES; | |
1260 | *s = '\0'; | |
1261 | break; | |
1262 | case '<': | |
1263 | fcmd->f_type = F_LEFT; | |
1264 | while (*s == '<') | |
1265 | s++; | |
1266 | break; | |
1267 | case '>': | |
1268 | fcmd->f_type = F_RIGHT; | |
1269 | while (*s == '>') | |
1270 | s++; | |
1271 | break; | |
1272 | case '|': | |
1273 | fcmd->f_type = F_CENTER; | |
1274 | while (*s == '|') | |
1275 | s++; | |
1276 | break; | |
1277 | default: | |
1278 | fcmd->f_type = F_LEFT; | |
1279 | break; | |
1280 | } | |
1281 | if (fcmd->f_flags & FC_CHOP && *s == '.') { | |
1282 | fcmd->f_flags |= FC_MORE; | |
1283 | while (*s == '.') | |
1284 | s++; | |
1285 | } | |
1286 | fcmd->f_size = s-t; | |
1287 | } | |
1288 | if (flinebeg) { | |
1289 | again: | |
1290 | if ((bufptr = str_gets(linestr ,rsfp)) == Nullch) | |
1291 | goto badform; | |
1292 | line++; | |
1293 | if (strEQ(bufptr,".\n")) { | |
1294 | yyerror("Missing values line"); | |
1295 | return froot.f_next; | |
1296 | } | |
1297 | if (*bufptr == '#') | |
1298 | goto again; | |
1299 | lex_newlines = TRUE; | |
1300 | while (flinebeg || *bufptr) { | |
1301 | switch(yylex()) { | |
1302 | default: | |
1303 | yyerror("Bad value in format"); | |
1304 | *bufptr = '\0'; | |
1305 | break; | |
1306 | case '\n': | |
1307 | if (flinebeg) | |
1308 | yyerror("Missing value in format"); | |
1309 | *bufptr = '\0'; | |
1310 | break; | |
1311 | case REG: | |
1312 | yylval.arg = stab2arg(A_LVAL,yylval.stabval); | |
1313 | /* FALL THROUGH */ | |
1314 | case RSTRING: | |
1315 | if (!flinebeg) | |
1316 | yyerror("Extra value in format"); | |
1317 | else { | |
1318 | flinebeg->f_expr = yylval.arg; | |
1319 | do { | |
1320 | flinebeg = flinebeg->f_next; | |
1321 | } while (flinebeg && flinebeg->f_size == 0); | |
1322 | } | |
1323 | break; | |
1324 | case ',': case ';': | |
1325 | continue; | |
1326 | } | |
1327 | } | |
1328 | lex_newlines = FALSE; | |
1329 | } | |
1330 | } | |
1331 | badform: | |
1332 | bufptr = str_get(linestr); | |
1333 | yyerror("Format not terminated"); | |
1334 | return froot.f_next; | |
1335 | } |