Commit | Line | Data |
27e2fb84 |
1 | /* $Header: stab.c,v 3.0.1.11 91/01/11 18:23:44 lwall Locked $ |
a687059c |
2 | * |
3 | * Copyright (c) 1989, Larry Wall |
4 | * |
5 | * You may distribute under the terms of the GNU General Public License |
6 | * as specified in the README file that comes with the perl 3.0 kit. |
8d063cd8 |
7 | * |
8 | * $Log: stab.c,v $ |
27e2fb84 |
9 | * Revision 3.0.1.11 91/01/11 18:23:44 lwall |
10 | * patch42: added -0 option |
11 | * |
34de22dd |
12 | * Revision 3.0.1.10 90/11/10 02:02:05 lwall |
13 | * patch38: random cleanup |
14 | * |
0a12ae7d |
15 | * Revision 3.0.1.9 90/10/16 10:32:05 lwall |
16 | * patch29: added -M, -A and -C |
17 | * patch29: taintperl now checks for world writable PATH components |
18 | * patch29: *foo now prints as *package'foo |
19 | * patch29: scripts now run at almost full speed under the debugger |
20 | * patch29: package behavior is now more consistent |
21 | * |
6eb13c3b |
22 | * Revision 3.0.1.8 90/08/13 22:30:17 lwall |
23 | * patch28: the NSIG hack didn't work right on Xenix |
24 | * |
00bf170e |
25 | * Revision 3.0.1.7 90/08/09 05:17:48 lwall |
26 | * patch19: fixed double include of <signal.h> |
27 | * patch19: $' broke on embedded nulls |
28 | * patch19: $< and $> better supported on machines without setreuid |
29 | * patch19: Added support for linked-in C subroutines |
30 | * patch19: %ENV wasn't forced to be global like it should |
31 | * patch19: $| didn't work before the filehandle was opened |
32 | * patch19: $! now returns "" in string context if errno == 0 |
33 | * |
0f85fab0 |
34 | * Revision 3.0.1.6 90/03/27 16:22:11 lwall |
35 | * patch16: support for machines that can't cast negative floats to unsigned ints |
36 | * |
79a0689e |
37 | * Revision 3.0.1.5 90/03/12 17:00:11 lwall |
38 | * patch13: undef $/ didn't work as advertised |
39 | * |
9f68db38 |
40 | * Revision 3.0.1.4 90/02/28 18:19:14 lwall |
41 | * patch9: $0 is now always the command name |
42 | * patch9: you may now undef $/ to have no input record separator |
43 | * patch9: local($.) didn't work |
44 | * patch9: sometimes perl thought ordinary data was a symbol table entry |
45 | * patch9: stab_array() and stab_hash() weren't defined on MICROPORT |
46 | * |
663a0e37 |
47 | * Revision 3.0.1.3 89/12/21 20:18:40 lwall |
48 | * patch7: ANSI strerror() is now supported |
49 | * patch7: errno may now be a macro with an lvalue |
50 | * patch7: in stab.c, sighandler() may now return either void or int |
51 | * |
ffed7fef |
52 | * Revision 3.0.1.2 89/11/17 15:35:37 lwall |
53 | * patch5: sighandler() needed to be static |
54 | * |
ae986130 |
55 | * Revision 3.0.1.1 89/11/11 04:55:07 lwall |
56 | * patch2: sys_errlist[sys_nerr] is illegal |
57 | * |
a687059c |
58 | * Revision 3.0 89/10/18 15:23:23 lwall |
59 | * 3.0 baseline |
8d063cd8 |
60 | * |
61 | */ |
62 | |
8d063cd8 |
63 | #include "EXTERN.h" |
8d063cd8 |
64 | #include "perl.h" |
65 | |
6eb13c3b |
66 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
378cc40b |
67 | #include <signal.h> |
00bf170e |
68 | #endif |
378cc40b |
69 | |
8d063cd8 |
70 | static char *sig_name[] = { |
a687059c |
71 | SIG_NAME,0 |
72 | }; |
8d063cd8 |
73 | |
663a0e37 |
74 | #ifdef VOIDSIG |
75 | #define handlertype void |
76 | #else |
77 | #define handlertype int |
78 | #endif |
2e1b3b7e |
79 | |
34de22dd |
80 | static handlertype sighandler(); |
81 | |
8d063cd8 |
82 | STR * |
a687059c |
83 | stab_str(str) |
84 | STR *str; |
8d063cd8 |
85 | { |
a687059c |
86 | STAB *stab = str->str_u.str_stab; |
8d063cd8 |
87 | register int paren; |
88 | register char *s; |
378cc40b |
89 | register int i; |
8d063cd8 |
90 | |
a687059c |
91 | if (str->str_rare) |
92 | return stab_val(stab); |
93 | |
94 | switch (*stab->str_magic->str_ptr) { |
0a12ae7d |
95 | case '\024': /* ^T */ |
96 | str_numset(stab_val(stab),(double)basetime); |
97 | break; |
9f68db38 |
98 | case '1': case '2': case '3': case '4': |
8d063cd8 |
99 | case '5': case '6': case '7': case '8': case '9': case '&': |
100 | if (curspat) { |
a687059c |
101 | paren = atoi(stab_name(stab)); |
378cc40b |
102 | getparen: |
103 | if (curspat->spat_regexp && |
104 | paren <= curspat->spat_regexp->nparens && |
105 | (s = curspat->spat_regexp->startp[paren]) ) { |
106 | i = curspat->spat_regexp->endp[paren] - s; |
107 | if (i >= 0) |
a687059c |
108 | str_nset(stab_val(stab),s,i); |
378cc40b |
109 | else |
a687059c |
110 | str_sset(stab_val(stab),&str_undef); |
8d063cd8 |
111 | } |
378cc40b |
112 | else |
a687059c |
113 | str_sset(stab_val(stab),&str_undef); |
8d063cd8 |
114 | } |
115 | break; |
116 | case '+': |
117 | if (curspat) { |
378cc40b |
118 | paren = curspat->spat_regexp->lastparen; |
119 | goto getparen; |
8d063cd8 |
120 | } |
121 | break; |
a687059c |
122 | case '`': |
123 | if (curspat) { |
124 | if (curspat->spat_regexp && |
125 | (s = curspat->spat_regexp->subbase) ) { |
126 | i = curspat->spat_regexp->startp[0] - s; |
127 | if (i >= 0) |
128 | str_nset(stab_val(stab),s,i); |
129 | else |
130 | str_nset(stab_val(stab),"",0); |
131 | } |
132 | else |
133 | str_nset(stab_val(stab),"",0); |
134 | } |
135 | break; |
136 | case '\'': |
137 | if (curspat) { |
138 | if (curspat->spat_regexp && |
139 | (s = curspat->spat_regexp->endp[0]) ) { |
00bf170e |
140 | str_nset(stab_val(stab),s, curspat->spat_regexp->subend - s); |
a687059c |
141 | } |
142 | else |
143 | str_nset(stab_val(stab),"",0); |
144 | } |
145 | break; |
8d063cd8 |
146 | case '.': |
a687059c |
147 | #ifndef lint |
8d063cd8 |
148 | if (last_in_stab) { |
a687059c |
149 | str_numset(stab_val(stab),(double)stab_io(last_in_stab)->lines); |
8d063cd8 |
150 | } |
a687059c |
151 | #endif |
8d063cd8 |
152 | break; |
153 | case '?': |
a687059c |
154 | str_numset(stab_val(stab),(double)statusvalue); |
8d063cd8 |
155 | break; |
156 | case '^': |
a687059c |
157 | s = stab_io(curoutstab)->top_name; |
158 | str_set(stab_val(stab),s); |
8d063cd8 |
159 | break; |
160 | case '~': |
a687059c |
161 | s = stab_io(curoutstab)->fmt_name; |
162 | str_set(stab_val(stab),s); |
8d063cd8 |
163 | break; |
a687059c |
164 | #ifndef lint |
8d063cd8 |
165 | case '=': |
a687059c |
166 | str_numset(stab_val(stab),(double)stab_io(curoutstab)->page_len); |
8d063cd8 |
167 | break; |
168 | case '-': |
a687059c |
169 | str_numset(stab_val(stab),(double)stab_io(curoutstab)->lines_left); |
8d063cd8 |
170 | break; |
171 | case '%': |
a687059c |
172 | str_numset(stab_val(stab),(double)stab_io(curoutstab)->page); |
8d063cd8 |
173 | break; |
a687059c |
174 | #endif |
8d063cd8 |
175 | case '/': |
27e2fb84 |
176 | if (record_separator != 0777) { |
9f68db38 |
177 | *tokenbuf = record_separator; |
178 | tokenbuf[1] = '\0'; |
179 | str_nset(stab_val(stab),tokenbuf,rslen); |
180 | } |
8d063cd8 |
181 | break; |
182 | case '[': |
a687059c |
183 | str_numset(stab_val(stab),(double)arybase); |
8d063cd8 |
184 | break; |
185 | case '|': |
00bf170e |
186 | if (!stab_io(curoutstab)) |
187 | stab_io(curoutstab) = stio_new(); |
a687059c |
188 | str_numset(stab_val(stab), |
189 | (double)((stab_io(curoutstab)->flags & IOF_FLUSH) != 0) ); |
8d063cd8 |
190 | break; |
191 | case ',': |
a687059c |
192 | str_nset(stab_val(stab),ofs,ofslen); |
8d063cd8 |
193 | break; |
194 | case '\\': |
a687059c |
195 | str_nset(stab_val(stab),ors,orslen); |
8d063cd8 |
196 | break; |
197 | case '#': |
a687059c |
198 | str_set(stab_val(stab),ofmt); |
8d063cd8 |
199 | break; |
200 | case '!': |
a687059c |
201 | str_numset(stab_val(stab), (double)errno); |
00bf170e |
202 | str_set(stab_val(stab), errno ? strerror(errno) : ""); |
a687059c |
203 | stab_val(stab)->str_nok = 1; /* what a wonderful hack! */ |
378cc40b |
204 | break; |
205 | case '<': |
a687059c |
206 | str_numset(stab_val(stab),(double)uid); |
378cc40b |
207 | break; |
208 | case '>': |
a687059c |
209 | str_numset(stab_val(stab),(double)euid); |
378cc40b |
210 | break; |
211 | case '(': |
a687059c |
212 | s = buf; |
213 | (void)sprintf(s,"%d",(int)gid); |
378cc40b |
214 | goto add_groups; |
215 | case ')': |
a687059c |
216 | s = buf; |
217 | (void)sprintf(s,"%d",(int)egid); |
378cc40b |
218 | add_groups: |
219 | while (*s) s++; |
220 | #ifdef GETGROUPS |
221 | #ifndef NGROUPS |
222 | #define NGROUPS 32 |
223 | #endif |
224 | { |
225 | GIDTYPE gary[NGROUPS]; |
226 | |
227 | i = getgroups(NGROUPS,gary); |
228 | while (--i >= 0) { |
a687059c |
229 | (void)sprintf(s," %ld", (long)gary[i]); |
378cc40b |
230 | while (*s) s++; |
231 | } |
232 | } |
233 | #endif |
a687059c |
234 | str_set(stab_val(stab),buf); |
8d063cd8 |
235 | break; |
00bf170e |
236 | default: |
237 | { |
238 | struct ufuncs *uf = (struct ufuncs *)str->str_ptr; |
239 | |
240 | if (uf && uf->uf_val) |
0a12ae7d |
241 | (*uf->uf_val)(uf->uf_index, stab_val(stab)); |
00bf170e |
242 | } |
243 | break; |
8d063cd8 |
244 | } |
a687059c |
245 | return stab_val(stab); |
8d063cd8 |
246 | } |
247 | |
a687059c |
248 | stabset(mstr,str) |
249 | register STR *mstr; |
8d063cd8 |
250 | STR *str; |
251 | { |
a687059c |
252 | STAB *stab = mstr->str_u.str_stab; |
8d063cd8 |
253 | char *s; |
254 | int i; |
8d063cd8 |
255 | |
a687059c |
256 | switch (mstr->str_rare) { |
257 | case 'E': |
258 | setenv(mstr->str_ptr,str_get(str)); |
259 | /* And you'll never guess what the dog had */ |
0a12ae7d |
260 | /* in its mouth... */ |
261 | #ifdef TAINT |
262 | if (strEQ(mstr->str_ptr,"PATH")) { |
263 | char *strend = str->str_ptr + str->str_cur; |
264 | |
265 | s = str->str_ptr; |
266 | while (s < strend) { |
267 | s = cpytill(tokenbuf,s,strend,':',&i); |
268 | s++; |
269 | if (*tokenbuf != '/' |
270 | || (stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) ) |
271 | str->str_tainted = 2; |
272 | } |
273 | } |
274 | #endif |
275 | break; |
a687059c |
276 | case 'S': |
277 | s = str_get(str); |
278 | i = whichsig(mstr->str_ptr); /* ...no, a brick */ |
279 | if (strEQ(s,"IGNORE")) |
280 | #ifndef lint |
281 | (void)signal(i,SIG_IGN); |
282 | #else |
283 | ; |
284 | #endif |
285 | else if (strEQ(s,"DEFAULT") || !*s) |
286 | (void)signal(i,SIG_DFL); |
0a12ae7d |
287 | else { |
a687059c |
288 | (void)signal(i,sighandler); |
0a12ae7d |
289 | if (!index(s,'\'')) { |
290 | sprintf(tokenbuf, "main'%s",s); |
291 | str_set(str,tokenbuf); |
292 | } |
293 | } |
a687059c |
294 | break; |
295 | #ifdef SOME_DBM |
296 | case 'D': |
297 | hdbmstore(stab_hash(stab),mstr->str_ptr,mstr->str_cur,str); |
298 | break; |
299 | #endif |
0a12ae7d |
300 | case 'L': |
301 | { |
302 | CMD *cmd; |
303 | |
304 | i = str_true(str); |
34de22dd |
305 | str = afetch(stab_xarray(stab),atoi(mstr->str_ptr), FALSE); |
0a12ae7d |
306 | cmd = str->str_magic->str_u.str_cmd; |
307 | cmd->c_flags &= ~CF_OPTIMIZE; |
308 | cmd->c_flags |= i? CFT_D1 : CFT_D0; |
309 | } |
310 | break; |
a687059c |
311 | case '#': |
312 | afill(stab_array(stab), (int)str_gnum(str) - arybase); |
313 | break; |
314 | case 'X': /* merely a copy of a * string */ |
315 | break; |
316 | case '*': |
317 | s = str_get(str); |
9f68db38 |
318 | if (strNE(s,"StB") || str->str_cur != sizeof(STBP)) { |
a687059c |
319 | if (!*s) { |
320 | STBP *stbp; |
321 | |
322 | (void)savenostab(stab); /* schedule a free of this stab */ |
323 | if (stab->str_len) |
324 | Safefree(stab->str_ptr); |
325 | Newz(601,stbp, 1, STBP); |
326 | stab->str_ptr = stbp; |
327 | stab->str_len = stab->str_cur = sizeof(STBP); |
328 | stab->str_pok = 1; |
9f68db38 |
329 | strcpy(stab_magic(stab),"StB"); |
a687059c |
330 | stab_val(stab) = Str_new(70,0); |
00bf170e |
331 | stab_line(stab) = curcmd->c_line; |
a687059c |
332 | } |
00bf170e |
333 | else { |
a687059c |
334 | stab = stabent(s,TRUE); |
00bf170e |
335 | if (!stab_xarray(stab)) |
336 | aadd(stab); |
337 | if (!stab_xhash(stab)) |
338 | hadd(stab); |
339 | if (!stab_io(stab)) |
340 | stab_io(stab) = stio_new(); |
341 | } |
a687059c |
342 | str_sset(str,stab); |
343 | } |
344 | break; |
345 | case 's': { |
346 | struct lstring *lstr = (struct lstring*)str; |
347 | |
348 | mstr->str_rare = 0; |
349 | str->str_magic = Nullstr; |
350 | str_insert(mstr,lstr->lstr_offset,lstr->lstr_len, |
351 | str->str_ptr,str->str_cur); |
352 | } |
353 | break; |
354 | |
355 | case 'v': |
356 | do_vecset(mstr,str); |
357 | break; |
358 | |
359 | case 0: |
360 | switch (*stab->str_magic->str_ptr) { |
0a12ae7d |
361 | case '\024': /* ^T */ |
362 | basetime = (long)str_gnum(str); |
363 | break; |
9f68db38 |
364 | case '.': |
365 | if (localizing) |
366 | savesptr((STR**)&last_in_stab); |
367 | break; |
8d063cd8 |
368 | case '^': |
a687059c |
369 | Safefree(stab_io(curoutstab)->top_name); |
370 | stab_io(curoutstab)->top_name = s = savestr(str_get(str)); |
371 | stab_io(curoutstab)->top_stab = stabent(s,TRUE); |
8d063cd8 |
372 | break; |
373 | case '~': |
a687059c |
374 | Safefree(stab_io(curoutstab)->fmt_name); |
375 | stab_io(curoutstab)->fmt_name = s = savestr(str_get(str)); |
376 | stab_io(curoutstab)->fmt_stab = stabent(s,TRUE); |
8d063cd8 |
377 | break; |
378 | case '=': |
a687059c |
379 | stab_io(curoutstab)->page_len = (long)str_gnum(str); |
8d063cd8 |
380 | break; |
381 | case '-': |
a687059c |
382 | stab_io(curoutstab)->lines_left = (long)str_gnum(str); |
383 | if (stab_io(curoutstab)->lines_left < 0L) |
384 | stab_io(curoutstab)->lines_left = 0L; |
8d063cd8 |
385 | break; |
386 | case '%': |
a687059c |
387 | stab_io(curoutstab)->page = (long)str_gnum(str); |
8d063cd8 |
388 | break; |
389 | case '|': |
00bf170e |
390 | if (!stab_io(curoutstab)) |
391 | stab_io(curoutstab) = stio_new(); |
a687059c |
392 | stab_io(curoutstab)->flags &= ~IOF_FLUSH; |
8d063cd8 |
393 | if (str_gnum(str) != 0.0) { |
a687059c |
394 | stab_io(curoutstab)->flags |= IOF_FLUSH; |
8d063cd8 |
395 | } |
396 | break; |
397 | case '*': |
a687059c |
398 | i = (int)str_gnum(str); |
399 | multiline = (i != 0); |
8d063cd8 |
400 | break; |
401 | case '/': |
79a0689e |
402 | if (str->str_pok) { |
9f68db38 |
403 | record_separator = *str_get(str); |
404 | rslen = str->str_cur; |
405 | } |
406 | else { |
27e2fb84 |
407 | record_separator = 0777; /* fake a non-existent char */ |
9f68db38 |
408 | rslen = 1; |
409 | } |
8d063cd8 |
410 | break; |
411 | case '\\': |
412 | if (ors) |
a687059c |
413 | Safefree(ors); |
8d063cd8 |
414 | ors = savestr(str_get(str)); |
a687059c |
415 | orslen = str->str_cur; |
8d063cd8 |
416 | break; |
417 | case ',': |
418 | if (ofs) |
a687059c |
419 | Safefree(ofs); |
8d063cd8 |
420 | ofs = savestr(str_get(str)); |
a687059c |
421 | ofslen = str->str_cur; |
8d063cd8 |
422 | break; |
423 | case '#': |
424 | if (ofmt) |
a687059c |
425 | Safefree(ofmt); |
8d063cd8 |
426 | ofmt = savestr(str_get(str)); |
427 | break; |
428 | case '[': |
429 | arybase = (int)str_gnum(str); |
430 | break; |
378cc40b |
431 | case '?': |
0f85fab0 |
432 | statusvalue = U_S(str_gnum(str)); |
378cc40b |
433 | break; |
8d063cd8 |
434 | case '!': |
435 | errno = (int)str_gnum(str); /* will anyone ever use this? */ |
436 | break; |
378cc40b |
437 | case '<': |
378cc40b |
438 | uid = (int)str_gnum(str); |
a687059c |
439 | #ifdef SETREUID |
440 | if (delaymagic) { |
441 | delaymagic |= DM_REUID; |
442 | break; /* don't do magic till later */ |
443 | } |
444 | #endif /* SETREUID */ |
445 | #ifdef SETRUID |
446 | if (setruid((UIDTYPE)uid) < 0) |
447 | uid = (int)getuid(); |
448 | #else |
449 | #ifdef SETREUID |
450 | if (setreuid((UIDTYPE)uid, (UIDTYPE)-1) < 0) |
378cc40b |
451 | uid = (int)getuid(); |
452 | #else |
00bf170e |
453 | if (uid == euid) /* special case $< = $> */ |
454 | setuid(uid); |
455 | else |
456 | fatal("setruid() not implemented"); |
378cc40b |
457 | #endif |
a687059c |
458 | #endif |
378cc40b |
459 | break; |
460 | case '>': |
378cc40b |
461 | euid = (int)str_gnum(str); |
a687059c |
462 | #ifdef SETREUID |
463 | if (delaymagic) { |
464 | delaymagic |= DM_REUID; |
465 | break; /* don't do magic till later */ |
466 | } |
467 | #endif /* SETREUID */ |
468 | #ifdef SETEUID |
469 | if (seteuid((UIDTYPE)euid) < 0) |
470 | euid = (int)geteuid(); |
471 | #else |
472 | #ifdef SETREUID |
473 | if (setreuid((UIDTYPE)-1, (UIDTYPE)euid) < 0) |
378cc40b |
474 | euid = (int)geteuid(); |
475 | #else |
00bf170e |
476 | if (euid == uid) /* special case $> = $< */ |
477 | setuid(euid); |
478 | else |
479 | fatal("seteuid() not implemented"); |
378cc40b |
480 | #endif |
a687059c |
481 | #endif |
378cc40b |
482 | break; |
483 | case '(': |
a687059c |
484 | gid = (int)str_gnum(str); |
485 | #ifdef SETREGID |
486 | if (delaymagic) { |
487 | delaymagic |= DM_REGID; |
488 | break; /* don't do magic till later */ |
489 | } |
490 | #endif /* SETREGID */ |
378cc40b |
491 | #ifdef SETRGID |
a687059c |
492 | (void)setrgid((GIDTYPE)gid); |
493 | #else |
494 | #ifdef SETREGID |
495 | (void)setregid((GIDTYPE)gid, (GIDTYPE)-1); |
378cc40b |
496 | #else |
497 | fatal("setrgid() not implemented"); |
498 | #endif |
a687059c |
499 | #endif |
378cc40b |
500 | break; |
501 | case ')': |
a687059c |
502 | egid = (int)str_gnum(str); |
503 | #ifdef SETREGID |
504 | if (delaymagic) { |
505 | delaymagic |= DM_REGID; |
506 | break; /* don't do magic till later */ |
507 | } |
508 | #endif /* SETREGID */ |
378cc40b |
509 | #ifdef SETEGID |
a687059c |
510 | (void)setegid((GIDTYPE)egid); |
511 | #else |
512 | #ifdef SETREGID |
513 | (void)setregid((GIDTYPE)-1, (GIDTYPE)egid); |
378cc40b |
514 | #else |
515 | fatal("setegid() not implemented"); |
516 | #endif |
a687059c |
517 | #endif |
518 | break; |
519 | case ':': |
520 | chopset = str_get(str); |
378cc40b |
521 | break; |
00bf170e |
522 | default: |
523 | { |
524 | struct ufuncs *uf = (struct ufuncs *)str->str_magic->str_ptr; |
525 | |
526 | if (uf && uf->uf_set) |
0a12ae7d |
527 | (*uf->uf_set)(uf->uf_index, str); |
00bf170e |
528 | } |
529 | break; |
8d063cd8 |
530 | } |
a687059c |
531 | break; |
378cc40b |
532 | } |
8d063cd8 |
533 | } |
534 | |
378cc40b |
535 | whichsig(sig) |
536 | char *sig; |
8d063cd8 |
537 | { |
538 | register char **sigv; |
539 | |
540 | for (sigv = sig_name+1; *sigv; sigv++) |
378cc40b |
541 | if (strEQ(sig,*sigv)) |
8d063cd8 |
542 | return sigv - sig_name; |
a687059c |
543 | #ifdef SIGCLD |
544 | if (strEQ(sig,"CHLD")) |
545 | return SIGCLD; |
546 | #endif |
547 | #ifdef SIGCHLD |
548 | if (strEQ(sig,"CLD")) |
549 | return SIGCHLD; |
550 | #endif |
8d063cd8 |
551 | return 0; |
552 | } |
553 | |
663a0e37 |
554 | static handlertype |
8d063cd8 |
555 | sighandler(sig) |
556 | int sig; |
557 | { |
558 | STAB *stab; |
559 | ARRAY *savearray; |
560 | STR *str; |
0a12ae7d |
561 | CMD *oldcurcmd = curcmd; |
378cc40b |
562 | int oldsave = savestack->ary_fill; |
a687059c |
563 | ARRAY *oldstack = stack; |
0a12ae7d |
564 | CSV *oldcurcsv = curcsv; |
378cc40b |
565 | SUBR *sub; |
8d063cd8 |
566 | |
00bf170e |
567 | #ifdef OS2 /* or anybody else who requires SIG_ACK */ |
568 | signal(sig, SIG_ACK); |
569 | #endif |
0a12ae7d |
570 | curcsv = Nullcsv; |
a687059c |
571 | stab = stabent( |
572 | str_get(hfetch(stab_hash(sigstab),sig_name[sig],strlen(sig_name[sig]), |
573 | TRUE)), TRUE); |
574 | sub = stab_sub(stab); |
575 | if (!sub && *sig_name[sig] == 'C' && instr(sig_name[sig],"LD")) { |
576 | if (sig_name[sig][1] == 'H') |
577 | stab = stabent(str_get(hfetch(stab_hash(sigstab),"CLD",3,TRUE)), |
578 | TRUE); |
579 | else |
580 | stab = stabent(str_get(hfetch(stab_hash(sigstab),"CHLD",4,TRUE)), |
581 | TRUE); |
582 | sub = stab_sub(stab); /* gag */ |
583 | } |
378cc40b |
584 | if (!sub) { |
585 | if (dowarn) |
586 | warn("SIG%s handler \"%s\" not defined.\n", |
a687059c |
587 | sig_name[sig], stab_name(stab) ); |
378cc40b |
588 | return; |
589 | } |
a687059c |
590 | savearray = stab_xarray(defstab); |
591 | stab_xarray(defstab) = stack = anew(defstab); |
592 | stack->ary_flags = 0; |
593 | str = Str_new(71,0); |
8d063cd8 |
594 | str_set(str,sig_name[sig]); |
a687059c |
595 | (void)apush(stab_xarray(defstab),str); |
378cc40b |
596 | sub->depth++; |
597 | if (sub->depth >= 2) { /* save temporaries on recursion? */ |
598 | if (sub->depth == 100 && dowarn) |
a687059c |
599 | warn("Deep recursion on subroutine \"%s\"",stab_name(stab)); |
378cc40b |
600 | savelist(sub->tosave->ary_array,sub->tosave->ary_fill); |
601 | } |
378cc40b |
602 | |
a687059c |
603 | (void)cmd_exec(sub->cmd,G_SCALAR,1); /* so do it already */ |
378cc40b |
604 | |
605 | sub->depth--; /* assuming no longjumps out of here */ |
a687059c |
606 | str_free(stack->ary_array[0]); /* free the one real string */ |
607 | afree(stab_xarray(defstab)); /* put back old $_[] */ |
608 | stab_xarray(defstab) = savearray; |
609 | stack = oldstack; |
378cc40b |
610 | if (savestack->ary_fill > oldsave) |
611 | restorelist(oldsave); |
0a12ae7d |
612 | curcmd = oldcurcmd; |
613 | curcsv = oldcurcsv; |
8d063cd8 |
614 | } |
615 | |
8d063cd8 |
616 | STAB * |
617 | aadd(stab) |
618 | register STAB *stab; |
619 | { |
a687059c |
620 | if (!stab_xarray(stab)) |
621 | stab_xarray(stab) = anew(stab); |
8d063cd8 |
622 | return stab; |
623 | } |
624 | |
625 | STAB * |
626 | hadd(stab) |
627 | register STAB *stab; |
628 | { |
a687059c |
629 | if (!stab_xhash(stab)) |
630 | stab_xhash(stab) = hnew(COEFFSIZE); |
8d063cd8 |
631 | return stab; |
632 | } |
378cc40b |
633 | |
634 | STAB * |
0a12ae7d |
635 | fstab(name) |
636 | char *name; |
637 | { |
638 | char tmpbuf[1200]; |
639 | STAB *stab; |
640 | |
641 | sprintf(tmpbuf,"'_<%s", name); |
642 | stab = stabent(tmpbuf, TRUE); |
643 | str_set(stab_val(stab), name); |
644 | if (perldb) |
645 | (void)hadd(aadd(stab)); |
646 | return stab; |
647 | } |
648 | |
649 | STAB * |
378cc40b |
650 | stabent(name,add) |
651 | register char *name; |
652 | int add; |
653 | { |
654 | register STAB *stab; |
a687059c |
655 | register STBP *stbp; |
656 | int len; |
657 | register char *namend; |
658 | HASH *stash; |
659 | char *sawquote = Nullch; |
660 | char *prevquote = Nullch; |
661 | bool global = FALSE; |
378cc40b |
662 | |
a687059c |
663 | if (isascii(*name) && isupper(*name)) { |
664 | if (*name > 'I') { |
665 | if (*name == 'S' && ( |
666 | strEQ(name, "SIG") || |
667 | strEQ(name, "STDIN") || |
668 | strEQ(name, "STDOUT") || |
669 | strEQ(name, "STDERR") )) |
670 | global = TRUE; |
378cc40b |
671 | } |
a687059c |
672 | else if (*name > 'E') { |
673 | if (*name == 'I' && strEQ(name, "INC")) |
674 | global = TRUE; |
675 | } |
00bf170e |
676 | else if (*name > 'A') { |
a687059c |
677 | if (*name == 'E' && strEQ(name, "ENV")) |
678 | global = TRUE; |
679 | } |
680 | else if (*name == 'A' && ( |
681 | strEQ(name, "ARGV") || |
682 | strEQ(name, "ARGVOUT") )) |
683 | global = TRUE; |
684 | } |
685 | for (namend = name; *namend; namend++) { |
686 | if (*namend == '\'' && namend[1]) |
687 | prevquote = sawquote, sawquote = namend; |
688 | } |
689 | if (sawquote == name && name[1]) { |
690 | stash = defstash; |
691 | sawquote = Nullch; |
692 | name++; |
693 | } |
694 | else if (!isalpha(*name) || global) |
695 | stash = defstash; |
0a12ae7d |
696 | else if (curcmd == &compiling) |
a687059c |
697 | stash = curstash; |
0a12ae7d |
698 | else |
699 | stash = curcmd->c_stash; |
a687059c |
700 | if (sawquote) { |
701 | char tmpbuf[256]; |
702 | char *s, *d; |
703 | |
704 | *sawquote = '\0'; |
705 | if (s = prevquote) { |
706 | strncpy(tmpbuf,name,s-name+1); |
707 | d = tmpbuf+(s-name+1); |
708 | *d++ = '_'; |
709 | strcpy(d,s+1); |
710 | } |
711 | else { |
712 | *tmpbuf = '_'; |
713 | strcpy(tmpbuf+1,name); |
714 | } |
715 | stab = stabent(tmpbuf,TRUE); |
716 | if (!(stash = stab_xhash(stab))) |
717 | stash = stab_xhash(stab) = hnew(0); |
0a12ae7d |
718 | if (!stash->tbl_name) |
719 | stash->tbl_name = savestr(name); |
a687059c |
720 | name = sawquote+1; |
721 | *sawquote = '\''; |
378cc40b |
722 | } |
a687059c |
723 | len = namend - name; |
724 | stab = (STAB*)hfetch(stash,name,len,add); |
0a12ae7d |
725 | if (stab == (STAB*)&str_undef) |
a687059c |
726 | return Nullstab; |
727 | if (stab->str_pok) { |
728 | stab->str_pok |= SP_MULTI; |
729 | return stab; |
730 | } |
731 | else { |
732 | if (stab->str_len) |
733 | Safefree(stab->str_ptr); |
734 | Newz(602,stbp, 1, STBP); |
735 | stab->str_ptr = stbp; |
736 | stab->str_len = stab->str_cur = sizeof(STBP); |
737 | stab->str_pok = 1; |
9f68db38 |
738 | strcpy(stab_magic(stab),"StB"); |
a687059c |
739 | stab_val(stab) = Str_new(72,0); |
00bf170e |
740 | stab_line(stab) = curcmd->c_line; |
a687059c |
741 | str_magic(stab,stab,'*',name,len); |
0a12ae7d |
742 | stab_stash(stab) = stash; |
378cc40b |
743 | return stab; |
744 | } |
378cc40b |
745 | } |
746 | |
0a12ae7d |
747 | stab_fullname(str,stab) |
748 | STR *str; |
749 | STAB *stab; |
750 | { |
751 | str_set(str,stab_stash(stab)->tbl_name); |
752 | str_ncat(str,"'", 1); |
753 | str_scat(str,stab->str_magic); |
754 | } |
755 | |
378cc40b |
756 | STIO * |
757 | stio_new() |
758 | { |
a687059c |
759 | STIO *stio; |
378cc40b |
760 | |
a687059c |
761 | Newz(603,stio,1,STIO); |
378cc40b |
762 | stio->page_len = 60; |
763 | return stio; |
764 | } |
765 | |
766 | stab_check(min,max) |
767 | int min; |
768 | register int max; |
769 | { |
a687059c |
770 | register HENT *entry; |
378cc40b |
771 | register int i; |
772 | register STAB *stab; |
773 | |
774 | for (i = min; i <= max; i++) { |
a687059c |
775 | for (entry = defstash->tbl_array[i]; entry; entry = entry->hent_next) { |
776 | stab = (STAB*)entry->hent_val; |
777 | if (stab->str_pok & SP_MULTI) |
378cc40b |
778 | continue; |
00bf170e |
779 | curcmd->c_line = stab_line(stab); |
a687059c |
780 | warn("Possible typo: \"%s\"", stab_name(stab)); |
378cc40b |
781 | } |
782 | } |
783 | } |
a687059c |
784 | |
785 | static int gensym = 0; |
786 | |
787 | STAB * |
788 | genstab() |
789 | { |
790 | (void)sprintf(tokenbuf,"_GEN_%d",gensym++); |
791 | return stabent(tokenbuf,TRUE); |
792 | } |
793 | |
794 | /* hopefully this is only called on local symbol table entries */ |
795 | |
796 | void |
797 | stab_clear(stab) |
798 | register STAB *stab; |
799 | { |
800 | STIO *stio; |
801 | SUBR *sub; |
802 | |
803 | afree(stab_xarray(stab)); |
0a12ae7d |
804 | (void)hfree(stab_xhash(stab), FALSE); |
a687059c |
805 | str_free(stab_val(stab)); |
806 | if (stio = stab_io(stab)) { |
807 | do_close(stab,FALSE); |
808 | Safefree(stio->top_name); |
809 | Safefree(stio->fmt_name); |
810 | } |
811 | if (sub = stab_sub(stab)) { |
812 | afree(sub->tosave); |
813 | cmd_free(sub->cmd); |
814 | } |
815 | Safefree(stab->str_ptr); |
816 | stab->str_ptr = Null(STBP*); |
817 | stab->str_len = 0; |
818 | stab->str_cur = 0; |
819 | } |
820 | |
9f68db38 |
821 | #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286)) |
822 | #define MICROPORT |
823 | #endif |
824 | |
825 | #ifdef MICROPORT /* Microport 2.4 hack */ |
826 | ARRAY *stab_array(stab) |
827 | register STAB *stab; |
828 | { |
829 | if (((STBP*)(stab->str_ptr))->stbp_array) |
830 | return ((STBP*)(stab->str_ptr))->stbp_array; |
831 | else |
832 | return ((STBP*)(aadd(stab)->str_ptr))->stbp_array; |
833 | } |
834 | |
835 | HASH *stab_hash(stab) |
836 | register STAB *stab; |
837 | { |
838 | if (((STBP*)(stab->str_ptr))->stbp_hash) |
839 | return ((STBP*)(stab->str_ptr))->stbp_hash; |
840 | else |
841 | return ((STBP*)(hadd(stab)->str_ptr))->stbp_hash; |
842 | } |
843 | #endif /* Microport 2.4 hack */ |