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d48672a2 | 1 | /* $RCSfile: util.c,v $$Revision: 4.0.1.2 $$Date: 91/06/07 12:10:42 $ |
a687059c | 2 | * |
d48672a2 | 3 | * Copyright (c) 1991, Larry Wall |
a687059c | 4 | * |
d48672a2 LW |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. | |
8d063cd8 LW |
7 | * |
8 | * $Log: util.c,v $ | |
d48672a2 LW |
9 | * Revision 4.0.1.2 91/06/07 12:10:42 lwall |
10 | * patch4: new copyright notice | |
11 | * patch4: made some allowances for "semi-standard" C | |
12 | * patch4: index() could blow up searching for null string | |
13 | * patch4: taintchecks could improperly modify parent in vfork() | |
14 | * patch4: exec would close files even if you cleared close-on-exec flag | |
15 | * | |
35c8bce7 LW |
16 | * Revision 4.0.1.1 91/04/12 09:19:25 lwall |
17 | * patch1: random cleanup in cpp namespace | |
18 | * | |
fe14fcc3 LW |
19 | * Revision 4.0 91/03/20 01:56:39 lwall |
20 | * 4.0 baseline. | |
8d063cd8 LW |
21 | * |
22 | */ | |
23 | ||
8d063cd8 | 24 | #include "EXTERN.h" |
8d063cd8 | 25 | #include "perl.h" |
62b28dd9 | 26 | |
6eb13c3b | 27 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
a687059c | 28 | #include <signal.h> |
62b28dd9 | 29 | #endif |
a687059c LW |
30 | |
31 | #ifdef I_VFORK | |
32 | # include <vfork.h> | |
33 | #endif | |
34 | ||
35 | #ifdef I_VARARGS | |
36 | # include <varargs.h> | |
37 | #endif | |
8d063cd8 | 38 | |
fe14fcc3 LW |
39 | #ifdef I_FCNTL |
40 | # include <fcntl.h> | |
41 | #endif | |
42 | #ifdef I_SYS_FILE | |
43 | # include <sys/file.h> | |
44 | #endif | |
45 | ||
8d063cd8 | 46 | #define FLUSH |
8d063cd8 LW |
47 | |
48 | static char nomem[] = "Out of memory!\n"; | |
49 | ||
50 | /* paranoid version of malloc */ | |
51 | ||
378cc40b | 52 | #ifdef DEBUGGING |
8d063cd8 | 53 | static int an = 0; |
378cc40b | 54 | #endif |
8d063cd8 | 55 | |
a687059c LW |
56 | /* NOTE: Do not call the next three routines directly. Use the macros |
57 | * in handy.h, so that we can easily redefine everything to do tracking of | |
58 | * allocated hunks back to the original New to track down any memory leaks. | |
59 | */ | |
60 | ||
8d063cd8 LW |
61 | char * |
62 | safemalloc(size) | |
62b28dd9 LW |
63 | #ifdef MSDOS |
64 | unsigned long size; | |
65 | #else | |
8d063cd8 | 66 | MEM_SIZE size; |
62b28dd9 | 67 | #endif /* MSDOS */ |
8d063cd8 LW |
68 | { |
69 | char *ptr; | |
d48672a2 | 70 | #ifndef STANDARD_C |
8d063cd8 | 71 | char *malloc(); |
d48672a2 | 72 | #endif /* ! STANDARD_C */ |
8d063cd8 | 73 | |
62b28dd9 LW |
74 | #ifdef MSDOS |
75 | if (size > 0xffff) { | |
76 | fprintf(stderr, "Allocation too large: %lx\n", size) FLUSH; | |
77 | exit(1); | |
78 | } | |
79 | #endif /* MSDOS */ | |
34de22dd LW |
80 | #ifdef DEBUGGING |
81 | if ((long)size < 0) | |
82 | fatal("panic: malloc"); | |
83 | #endif | |
8d063cd8 LW |
84 | ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
85 | #ifdef DEBUGGING | |
a687059c | 86 | # ifndef I286 |
8d063cd8 LW |
87 | if (debug & 128) |
88 | fprintf(stderr,"0x%x: (%05d) malloc %d bytes\n",ptr,an++,size); | |
a687059c LW |
89 | # else |
90 | if (debug & 128) | |
91 | fprintf(stderr,"0x%lx: (%05d) malloc %d bytes\n",ptr,an++,size); | |
92 | # endif | |
8d063cd8 LW |
93 | #endif |
94 | if (ptr != Nullch) | |
95 | return ptr; | |
96 | else { | |
34de22dd | 97 | fputs(nomem,stderr) FLUSH; |
8d063cd8 LW |
98 | exit(1); |
99 | } | |
100 | /*NOTREACHED*/ | |
a687059c LW |
101 | #ifdef lint |
102 | return ptr; | |
103 | #endif | |
8d063cd8 LW |
104 | } |
105 | ||
106 | /* paranoid version of realloc */ | |
107 | ||
108 | char * | |
109 | saferealloc(where,size) | |
110 | char *where; | |
62b28dd9 | 111 | #ifndef MSDOS |
8d063cd8 | 112 | MEM_SIZE size; |
62b28dd9 LW |
113 | #else |
114 | unsigned long size; | |
115 | #endif /* MSDOS */ | |
8d063cd8 LW |
116 | { |
117 | char *ptr; | |
d48672a2 | 118 | #ifndef STANDARD_C |
8d063cd8 | 119 | char *realloc(); |
d48672a2 | 120 | #endif /* ! STANDARD_C */ |
8d063cd8 | 121 | |
62b28dd9 LW |
122 | #ifdef MSDOS |
123 | if (size > 0xffff) { | |
124 | fprintf(stderr, "Reallocation too large: %lx\n", size) FLUSH; | |
125 | exit(1); | |
126 | } | |
127 | #endif /* MSDOS */ | |
378cc40b LW |
128 | if (!where) |
129 | fatal("Null realloc"); | |
34de22dd LW |
130 | #ifdef DEBUGGING |
131 | if ((long)size < 0) | |
132 | fatal("panic: realloc"); | |
133 | #endif | |
8d063cd8 LW |
134 | ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */ |
135 | #ifdef DEBUGGING | |
a687059c | 136 | # ifndef I286 |
8d063cd8 LW |
137 | if (debug & 128) { |
138 | fprintf(stderr,"0x%x: (%05d) rfree\n",where,an++); | |
139 | fprintf(stderr,"0x%x: (%05d) realloc %d bytes\n",ptr,an++,size); | |
140 | } | |
a687059c LW |
141 | # else |
142 | if (debug & 128) { | |
143 | fprintf(stderr,"0x%lx: (%05d) rfree\n",where,an++); | |
144 | fprintf(stderr,"0x%lx: (%05d) realloc %d bytes\n",ptr,an++,size); | |
145 | } | |
146 | # endif | |
8d063cd8 LW |
147 | #endif |
148 | if (ptr != Nullch) | |
149 | return ptr; | |
150 | else { | |
34de22dd | 151 | fputs(nomem,stderr) FLUSH; |
8d063cd8 LW |
152 | exit(1); |
153 | } | |
154 | /*NOTREACHED*/ | |
a687059c LW |
155 | #ifdef lint |
156 | return ptr; | |
157 | #endif | |
8d063cd8 LW |
158 | } |
159 | ||
160 | /* safe version of free */ | |
161 | ||
a687059c | 162 | void |
8d063cd8 LW |
163 | safefree(where) |
164 | char *where; | |
165 | { | |
166 | #ifdef DEBUGGING | |
a687059c | 167 | # ifndef I286 |
8d063cd8 LW |
168 | if (debug & 128) |
169 | fprintf(stderr,"0x%x: (%05d) free\n",where,an++); | |
a687059c LW |
170 | # else |
171 | if (debug & 128) | |
172 | fprintf(stderr,"0x%lx: (%05d) free\n",where,an++); | |
173 | # endif | |
8d063cd8 | 174 | #endif |
378cc40b LW |
175 | if (where) { |
176 | free(where); | |
177 | } | |
8d063cd8 LW |
178 | } |
179 | ||
a687059c LW |
180 | #ifdef LEAKTEST |
181 | ||
182 | #define ALIGN sizeof(long) | |
8d063cd8 LW |
183 | |
184 | char * | |
a687059c LW |
185 | safexmalloc(x,size) |
186 | int x; | |
187 | MEM_SIZE size; | |
8d063cd8 | 188 | { |
a687059c | 189 | register char *where; |
8d063cd8 | 190 | |
a687059c LW |
191 | where = safemalloc(size + ALIGN); |
192 | xcount[x]++; | |
193 | where[0] = x % 100; | |
194 | where[1] = x / 100; | |
195 | return where + ALIGN; | |
8d063cd8 | 196 | } |
8d063cd8 LW |
197 | |
198 | char * | |
a687059c LW |
199 | safexrealloc(where,size) |
200 | char *where; | |
201 | MEM_SIZE size; | |
202 | { | |
203 | return saferealloc(where - ALIGN, size + ALIGN) + ALIGN; | |
204 | } | |
205 | ||
206 | void | |
207 | safexfree(where) | |
208 | char *where; | |
209 | { | |
210 | int x; | |
211 | ||
212 | if (!where) | |
213 | return; | |
214 | where -= ALIGN; | |
215 | x = where[0] + 100 * where[1]; | |
216 | xcount[x]--; | |
217 | safefree(where); | |
218 | } | |
219 | ||
220 | xstat() | |
8d063cd8 | 221 | { |
a687059c | 222 | register int i; |
8d063cd8 | 223 | |
a687059c LW |
224 | for (i = 0; i < MAXXCOUNT; i++) { |
225 | if (xcount[i] != lastxcount[i]) { | |
226 | fprintf(stderr,"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]); | |
227 | lastxcount[i] = xcount[i]; | |
8d063cd8 LW |
228 | } |
229 | } | |
8d063cd8 | 230 | } |
a687059c LW |
231 | |
232 | #endif /* LEAKTEST */ | |
8d063cd8 LW |
233 | |
234 | /* copy a string up to some (non-backslashed) delimiter, if any */ | |
235 | ||
236 | char * | |
a687059c | 237 | cpytill(to,from,fromend,delim,retlen) |
62b28dd9 LW |
238 | register char *to; |
239 | register char *from; | |
a687059c | 240 | register char *fromend; |
8d063cd8 | 241 | register int delim; |
a687059c | 242 | int *retlen; |
8d063cd8 | 243 | { |
a687059c LW |
244 | char *origto = to; |
245 | ||
246 | for (; from < fromend; from++,to++) { | |
378cc40b LW |
247 | if (*from == '\\') { |
248 | if (from[1] == delim) | |
249 | from++; | |
250 | else if (from[1] == '\\') | |
251 | *to++ = *from++; | |
252 | } | |
8d063cd8 LW |
253 | else if (*from == delim) |
254 | break; | |
255 | *to = *from; | |
256 | } | |
257 | *to = '\0'; | |
a687059c | 258 | *retlen = to - origto; |
8d063cd8 LW |
259 | return from; |
260 | } | |
261 | ||
262 | /* return ptr to little string in big string, NULL if not found */ | |
378cc40b | 263 | /* This routine was donated by Corey Satten. */ |
8d063cd8 LW |
264 | |
265 | char * | |
266 | instr(big, little) | |
378cc40b LW |
267 | register char *big; |
268 | register char *little; | |
269 | { | |
270 | register char *s, *x; | |
a687059c | 271 | register int first; |
378cc40b | 272 | |
a687059c LW |
273 | if (!little) |
274 | return big; | |
275 | first = *little++; | |
378cc40b LW |
276 | if (!first) |
277 | return big; | |
278 | while (*big) { | |
279 | if (*big++ != first) | |
280 | continue; | |
281 | for (x=big,s=little; *s; /**/ ) { | |
282 | if (!*x) | |
283 | return Nullch; | |
284 | if (*s++ != *x++) { | |
285 | s--; | |
286 | break; | |
287 | } | |
288 | } | |
289 | if (!*s) | |
290 | return big-1; | |
291 | } | |
292 | return Nullch; | |
293 | } | |
8d063cd8 | 294 | |
a687059c LW |
295 | /* same as instr but allow embedded nulls */ |
296 | ||
297 | char * | |
298 | ninstr(big, bigend, little, lend) | |
299 | register char *big; | |
300 | register char *bigend; | |
301 | char *little; | |
302 | char *lend; | |
8d063cd8 | 303 | { |
a687059c LW |
304 | register char *s, *x; |
305 | register int first = *little; | |
306 | register char *littleend = lend; | |
378cc40b | 307 | |
a687059c LW |
308 | if (!first && little > littleend) |
309 | return big; | |
310 | bigend -= littleend - little++; | |
311 | while (big <= bigend) { | |
312 | if (*big++ != first) | |
313 | continue; | |
314 | for (x=big,s=little; s < littleend; /**/ ) { | |
315 | if (*s++ != *x++) { | |
316 | s--; | |
317 | break; | |
318 | } | |
319 | } | |
320 | if (s >= littleend) | |
321 | return big-1; | |
378cc40b | 322 | } |
a687059c LW |
323 | return Nullch; |
324 | } | |
325 | ||
326 | /* reverse of the above--find last substring */ | |
327 | ||
328 | char * | |
329 | rninstr(big, bigend, little, lend) | |
330 | register char *big; | |
331 | char *bigend; | |
332 | char *little; | |
333 | char *lend; | |
334 | { | |
335 | register char *bigbeg; | |
336 | register char *s, *x; | |
337 | register int first = *little; | |
338 | register char *littleend = lend; | |
339 | ||
340 | if (!first && little > littleend) | |
341 | return bigend; | |
342 | bigbeg = big; | |
343 | big = bigend - (littleend - little++); | |
344 | while (big >= bigbeg) { | |
345 | if (*big-- != first) | |
346 | continue; | |
347 | for (x=big+2,s=little; s < littleend; /**/ ) { | |
348 | if (*s++ != *x++) { | |
349 | s--; | |
350 | break; | |
351 | } | |
352 | } | |
353 | if (s >= littleend) | |
354 | return big+1; | |
378cc40b | 355 | } |
a687059c | 356 | return Nullch; |
378cc40b | 357 | } |
a687059c LW |
358 | |
359 | unsigned char fold[] = { | |
360 | 0, 1, 2, 3, 4, 5, 6, 7, | |
361 | 8, 9, 10, 11, 12, 13, 14, 15, | |
362 | 16, 17, 18, 19, 20, 21, 22, 23, | |
363 | 24, 25, 26, 27, 28, 29, 30, 31, | |
364 | 32, 33, 34, 35, 36, 37, 38, 39, | |
365 | 40, 41, 42, 43, 44, 45, 46, 47, | |
366 | 48, 49, 50, 51, 52, 53, 54, 55, | |
367 | 56, 57, 58, 59, 60, 61, 62, 63, | |
368 | 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', | |
369 | 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', | |
370 | 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', | |
371 | 'x', 'y', 'z', 91, 92, 93, 94, 95, | |
372 | 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G', | |
373 | 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', | |
374 | 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', | |
375 | 'X', 'Y', 'Z', 123, 124, 125, 126, 127, | |
376 | 128, 129, 130, 131, 132, 133, 134, 135, | |
377 | 136, 137, 138, 139, 140, 141, 142, 143, | |
378 | 144, 145, 146, 147, 148, 149, 150, 151, | |
379 | 152, 153, 154, 155, 156, 157, 158, 159, | |
380 | 160, 161, 162, 163, 164, 165, 166, 167, | |
381 | 168, 169, 170, 171, 172, 173, 174, 175, | |
382 | 176, 177, 178, 179, 180, 181, 182, 183, | |
383 | 184, 185, 186, 187, 188, 189, 190, 191, | |
384 | 192, 193, 194, 195, 196, 197, 198, 199, | |
385 | 200, 201, 202, 203, 204, 205, 206, 207, | |
386 | 208, 209, 210, 211, 212, 213, 214, 215, | |
387 | 216, 217, 218, 219, 220, 221, 222, 223, | |
388 | 224, 225, 226, 227, 228, 229, 230, 231, | |
389 | 232, 233, 234, 235, 236, 237, 238, 239, | |
390 | 240, 241, 242, 243, 244, 245, 246, 247, | |
391 | 248, 249, 250, 251, 252, 253, 254, 255 | |
392 | }; | |
378cc40b LW |
393 | |
394 | static unsigned char freq[] = { | |
395 | 1, 2, 84, 151, 154, 155, 156, 157, | |
396 | 165, 246, 250, 3, 158, 7, 18, 29, | |
397 | 40, 51, 62, 73, 85, 96, 107, 118, | |
398 | 129, 140, 147, 148, 149, 150, 152, 153, | |
399 | 255, 182, 224, 205, 174, 176, 180, 217, | |
400 | 233, 232, 236, 187, 235, 228, 234, 226, | |
401 | 222, 219, 211, 195, 188, 193, 185, 184, | |
402 | 191, 183, 201, 229, 181, 220, 194, 162, | |
403 | 163, 208, 186, 202, 200, 218, 198, 179, | |
404 | 178, 214, 166, 170, 207, 199, 209, 206, | |
405 | 204, 160, 212, 216, 215, 192, 175, 173, | |
406 | 243, 172, 161, 190, 203, 189, 164, 230, | |
407 | 167, 248, 227, 244, 242, 255, 241, 231, | |
408 | 240, 253, 169, 210, 245, 237, 249, 247, | |
409 | 239, 168, 252, 251, 254, 238, 223, 221, | |
410 | 213, 225, 177, 197, 171, 196, 159, 4, | |
411 | 5, 6, 8, 9, 10, 11, 12, 13, | |
412 | 14, 15, 16, 17, 19, 20, 21, 22, | |
413 | 23, 24, 25, 26, 27, 28, 30, 31, | |
414 | 32, 33, 34, 35, 36, 37, 38, 39, | |
415 | 41, 42, 43, 44, 45, 46, 47, 48, | |
416 | 49, 50, 52, 53, 54, 55, 56, 57, | |
417 | 58, 59, 60, 61, 63, 64, 65, 66, | |
418 | 67, 68, 69, 70, 71, 72, 74, 75, | |
419 | 76, 77, 78, 79, 80, 81, 82, 83, | |
420 | 86, 87, 88, 89, 90, 91, 92, 93, | |
421 | 94, 95, 97, 98, 99, 100, 101, 102, | |
422 | 103, 104, 105, 106, 108, 109, 110, 111, | |
423 | 112, 113, 114, 115, 116, 117, 119, 120, | |
424 | 121, 122, 123, 124, 125, 126, 127, 128, | |
425 | 130, 131, 132, 133, 134, 135, 136, 137, | |
426 | 138, 139, 141, 142, 143, 144, 145, 146 | |
427 | }; | |
8d063cd8 | 428 | |
378cc40b | 429 | void |
a687059c | 430 | fbmcompile(str, iflag) |
378cc40b | 431 | STR *str; |
a687059c | 432 | int iflag; |
378cc40b | 433 | { |
a687059c LW |
434 | register unsigned char *s; |
435 | register unsigned char *table; | |
378cc40b LW |
436 | register int i; |
437 | register int len = str->str_cur; | |
438 | int rarest = 0; | |
20188a90 | 439 | unsigned int frequency = 256; |
378cc40b | 440 | |
62b28dd9 | 441 | Str_Grow(str,len+258); |
a687059c LW |
442 | #ifndef lint |
443 | table = (unsigned char*)(str->str_ptr + len + 1); | |
444 | #else | |
445 | table = Null(unsigned char*); | |
446 | #endif | |
447 | s = table - 2; | |
448 | for (i = 0; i < 256; i++) { | |
378cc40b LW |
449 | table[i] = len; |
450 | } | |
451 | i = 0; | |
a687059c LW |
452 | #ifndef lint |
453 | while (s >= (unsigned char*)(str->str_ptr)) | |
454 | #endif | |
455 | { | |
456 | if (table[*s] == len) { | |
457 | #ifndef pdp11 | |
458 | if (iflag) | |
459 | table[*s] = table[fold[*s]] = i; | |
460 | #else | |
461 | if (iflag) { | |
462 | int j; | |
463 | j = fold[*s]; | |
464 | table[j] = i; | |
465 | table[*s] = i; | |
466 | } | |
467 | #endif /* pdp11 */ | |
468 | else | |
469 | table[*s] = i; | |
470 | } | |
378cc40b LW |
471 | s--,i++; |
472 | } | |
a687059c | 473 | str->str_pok |= SP_FBM; /* deep magic */ |
378cc40b | 474 | |
a687059c LW |
475 | #ifndef lint |
476 | s = (unsigned char*)(str->str_ptr); /* deeper magic */ | |
477 | #else | |
478 | s = Null(unsigned char*); | |
479 | #endif | |
480 | if (iflag) { | |
20188a90 | 481 | register unsigned int tmp, foldtmp; |
a687059c LW |
482 | str->str_pok |= SP_CASEFOLD; |
483 | for (i = 0; i < len; i++) { | |
484 | tmp=freq[s[i]]; | |
485 | foldtmp=freq[fold[s[i]]]; | |
486 | if (tmp < frequency && foldtmp < frequency) { | |
487 | rarest = i; | |
488 | /* choose most frequent among the two */ | |
489 | frequency = (tmp > foldtmp) ? tmp : foldtmp; | |
490 | } | |
491 | } | |
492 | } | |
493 | else { | |
494 | for (i = 0; i < len; i++) { | |
495 | if (freq[s[i]] < frequency) { | |
496 | rarest = i; | |
497 | frequency = freq[s[i]]; | |
498 | } | |
378cc40b LW |
499 | } |
500 | } | |
501 | str->str_rare = s[rarest]; | |
a687059c | 502 | str->str_state = rarest; |
378cc40b LW |
503 | #ifdef DEBUGGING |
504 | if (debug & 512) | |
a687059c | 505 | fprintf(stderr,"rarest char %c at %d\n",str->str_rare, str->str_state); |
378cc40b LW |
506 | #endif |
507 | } | |
508 | ||
378cc40b LW |
509 | char * |
510 | fbminstr(big, bigend, littlestr) | |
a687059c LW |
511 | unsigned char *big; |
512 | register unsigned char *bigend; | |
378cc40b LW |
513 | STR *littlestr; |
514 | { | |
a687059c | 515 | register unsigned char *s; |
378cc40b LW |
516 | register int tmp; |
517 | register int littlelen; | |
a687059c LW |
518 | register unsigned char *little; |
519 | register unsigned char *table; | |
520 | register unsigned char *olds; | |
521 | register unsigned char *oldlittle; | |
378cc40b | 522 | |
a687059c | 523 | #ifndef lint |
d48672a2 LW |
524 | if (!(littlestr->str_pok & SP_FBM)) { |
525 | if (!littlestr->str_ptr) | |
526 | return (char*)big; | |
9f68db38 LW |
527 | return ninstr((char*)big,(char*)bigend, |
528 | littlestr->str_ptr, littlestr->str_ptr + littlestr->str_cur); | |
d48672a2 | 529 | } |
a687059c | 530 | #endif |
378cc40b LW |
531 | |
532 | littlelen = littlestr->str_cur; | |
a687059c LW |
533 | #ifndef lint |
534 | if (littlestr->str_pok & SP_TAIL && !multiline) { /* tail anchored? */ | |
0f85fab0 LW |
535 | if (littlelen > bigend - big) |
536 | return Nullch; | |
a687059c LW |
537 | little = (unsigned char*)littlestr->str_ptr; |
538 | if (littlestr->str_pok & SP_CASEFOLD) { /* oops, fake it */ | |
539 | big = bigend - littlelen; /* just start near end */ | |
540 | if (bigend[-1] == '\n' && little[littlelen-1] != '\n') | |
541 | big--; | |
378cc40b LW |
542 | } |
543 | else { | |
a687059c LW |
544 | s = bigend - littlelen; |
545 | if (*s == *little && bcmp(s,little,littlelen)==0) | |
546 | return (char*)s; /* how sweet it is */ | |
34de22dd LW |
547 | else if (bigend[-1] == '\n' && little[littlelen-1] != '\n' |
548 | && s > big) { | |
a687059c LW |
549 | s--; |
550 | if (*s == *little && bcmp(s,little,littlelen)==0) | |
551 | return (char*)s; | |
552 | } | |
553 | return Nullch; | |
554 | } | |
555 | } | |
556 | table = (unsigned char*)(littlestr->str_ptr + littlelen + 1); | |
557 | #else | |
558 | table = Null(unsigned char*); | |
559 | #endif | |
62b28dd9 LW |
560 | if (--littlelen >= bigend - big) |
561 | return Nullch; | |
562 | s = big + littlelen; | |
a687059c LW |
563 | oldlittle = little = table - 2; |
564 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insensitive? */ | |
20188a90 | 565 | if (s < bigend) { |
a687059c LW |
566 | top1: |
567 | if (tmp = table[*s]) { | |
62b28dd9 LW |
568 | #ifdef POINTERRIGOR |
569 | if (bigend - s > tmp) { | |
570 | s += tmp; | |
571 | goto top1; | |
572 | } | |
573 | #else | |
574 | if ((s += tmp) < bigend) | |
575 | goto top1; | |
576 | #endif | |
577 | return Nullch; | |
a687059c LW |
578 | } |
579 | else { | |
580 | tmp = littlelen; /* less expensive than calling strncmp() */ | |
581 | olds = s; | |
582 | while (tmp--) { | |
583 | if (*--s == *--little || fold[*s] == *little) | |
584 | continue; | |
585 | s = olds + 1; /* here we pay the price for failure */ | |
586 | little = oldlittle; | |
587 | if (s < bigend) /* fake up continue to outer loop */ | |
588 | goto top1; | |
589 | return Nullch; | |
590 | } | |
591 | #ifndef lint | |
592 | return (char *)s; | |
593 | #endif | |
594 | } | |
595 | } | |
596 | } | |
597 | else { | |
20188a90 | 598 | if (s < bigend) { |
a687059c LW |
599 | top2: |
600 | if (tmp = table[*s]) { | |
62b28dd9 LW |
601 | #ifdef POINTERRIGOR |
602 | if (bigend - s > tmp) { | |
603 | s += tmp; | |
604 | goto top2; | |
605 | } | |
606 | #else | |
607 | if ((s += tmp) < bigend) | |
608 | goto top2; | |
609 | #endif | |
610 | return Nullch; | |
a687059c LW |
611 | } |
612 | else { | |
613 | tmp = littlelen; /* less expensive than calling strncmp() */ | |
614 | olds = s; | |
615 | while (tmp--) { | |
616 | if (*--s == *--little) | |
617 | continue; | |
618 | s = olds + 1; /* here we pay the price for failure */ | |
619 | little = oldlittle; | |
620 | if (s < bigend) /* fake up continue to outer loop */ | |
621 | goto top2; | |
622 | return Nullch; | |
623 | } | |
624 | #ifndef lint | |
625 | return (char *)s; | |
626 | #endif | |
378cc40b | 627 | } |
378cc40b LW |
628 | } |
629 | } | |
630 | return Nullch; | |
631 | } | |
632 | ||
633 | char * | |
634 | screaminstr(bigstr, littlestr) | |
635 | STR *bigstr; | |
636 | STR *littlestr; | |
637 | { | |
a687059c LW |
638 | register unsigned char *s, *x; |
639 | register unsigned char *big; | |
378cc40b LW |
640 | register int pos; |
641 | register int previous; | |
642 | register int first; | |
a687059c LW |
643 | register unsigned char *little; |
644 | register unsigned char *bigend; | |
645 | register unsigned char *littleend; | |
378cc40b LW |
646 | |
647 | if ((pos = screamfirst[littlestr->str_rare]) < 0) | |
648 | return Nullch; | |
a687059c LW |
649 | #ifndef lint |
650 | little = (unsigned char *)(littlestr->str_ptr); | |
651 | #else | |
652 | little = Null(unsigned char *); | |
653 | #endif | |
654 | littleend = little + littlestr->str_cur; | |
378cc40b | 655 | first = *little++; |
a687059c LW |
656 | previous = littlestr->str_state; |
657 | #ifndef lint | |
658 | big = (unsigned char *)(bigstr->str_ptr); | |
659 | #else | |
660 | big = Null(unsigned char*); | |
661 | #endif | |
662 | bigend = big + bigstr->str_cur; | |
378cc40b LW |
663 | big -= previous; |
664 | while (pos < previous) { | |
a687059c | 665 | #ifndef lint |
378cc40b | 666 | if (!(pos += screamnext[pos])) |
a687059c | 667 | #endif |
378cc40b LW |
668 | return Nullch; |
669 | } | |
a687059c LW |
670 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insignificant? */ |
671 | do { | |
672 | if (big[pos] != first && big[pos] != fold[first]) | |
673 | continue; | |
674 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { | |
675 | if (x >= bigend) | |
676 | return Nullch; | |
677 | if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) { | |
678 | s--; | |
679 | break; | |
680 | } | |
681 | } | |
682 | if (s == littleend) | |
683 | #ifndef lint | |
684 | return (char *)(big+pos); | |
685 | #else | |
8d063cd8 | 686 | return Nullch; |
a687059c LW |
687 | #endif |
688 | } while ( | |
689 | #ifndef lint | |
690 | pos += screamnext[pos] /* does this goof up anywhere? */ | |
691 | #else | |
692 | pos += screamnext[0] | |
693 | #endif | |
694 | ); | |
695 | } | |
696 | else { | |
697 | do { | |
698 | if (big[pos] != first) | |
699 | continue; | |
700 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { | |
701 | if (x >= bigend) | |
702 | return Nullch; | |
703 | if (*s++ != *x++) { | |
704 | s--; | |
705 | break; | |
706 | } | |
378cc40b | 707 | } |
a687059c LW |
708 | if (s == littleend) |
709 | #ifndef lint | |
710 | return (char *)(big+pos); | |
711 | #else | |
712 | return Nullch; | |
713 | #endif | |
714 | } while ( | |
715 | #ifndef lint | |
716 | pos += screamnext[pos] | |
717 | #else | |
718 | pos += screamnext[0] | |
719 | #endif | |
720 | ); | |
721 | } | |
8d063cd8 LW |
722 | return Nullch; |
723 | } | |
724 | ||
725 | /* copy a string to a safe spot */ | |
726 | ||
727 | char * | |
728 | savestr(str) | |
729 | char *str; | |
730 | { | |
a687059c | 731 | register char *newaddr; |
8d063cd8 | 732 | |
a687059c | 733 | New(902,newaddr,strlen(str)+1,char); |
8d063cd8 LW |
734 | (void)strcpy(newaddr,str); |
735 | return newaddr; | |
736 | } | |
737 | ||
a687059c LW |
738 | /* same thing but with a known length */ |
739 | ||
740 | char * | |
741 | nsavestr(str, len) | |
742 | char *str; | |
743 | register int len; | |
744 | { | |
745 | register char *newaddr; | |
746 | ||
747 | New(903,newaddr,len+1,char); | |
748 | (void)bcopy(str,newaddr,len); /* might not be null terminated */ | |
749 | newaddr[len] = '\0'; /* is now */ | |
750 | return newaddr; | |
751 | } | |
752 | ||
8d063cd8 LW |
753 | /* grow a static string to at least a certain length */ |
754 | ||
755 | void | |
756 | growstr(strptr,curlen,newlen) | |
757 | char **strptr; | |
758 | int *curlen; | |
759 | int newlen; | |
760 | { | |
761 | if (newlen > *curlen) { /* need more room? */ | |
762 | if (*curlen) | |
a687059c | 763 | Renew(*strptr,newlen,char); |
8d063cd8 | 764 | else |
a687059c | 765 | New(905,*strptr,newlen,char); |
8d063cd8 LW |
766 | *curlen = newlen; |
767 | } | |
768 | } | |
769 | ||
35c8bce7 | 770 | #ifndef I_VARARGS |
378cc40b LW |
771 | /*VARARGS1*/ |
772 | mess(pat,a1,a2,a3,a4) | |
773 | char *pat; | |
a687059c | 774 | long a1, a2, a3, a4; |
378cc40b LW |
775 | { |
776 | char *s; | |
777 | ||
a687059c LW |
778 | s = buf; |
779 | (void)sprintf(s,pat,a1,a2,a3,a4); | |
378cc40b LW |
780 | s += strlen(s); |
781 | if (s[-1] != '\n') { | |
62b28dd9 | 782 | if (curcmd->c_line) { |
20188a90 LW |
783 | (void)sprintf(s," at %s line %ld", |
784 | stab_val(curcmd->c_filestab)->str_ptr, (long)curcmd->c_line); | |
378cc40b LW |
785 | s += strlen(s); |
786 | } | |
787 | if (last_in_stab && | |
a687059c LW |
788 | stab_io(last_in_stab) && |
789 | stab_io(last_in_stab)->lines ) { | |
790 | (void)sprintf(s,", <%s> line %ld", | |
791 | last_in_stab == argvstab ? "" : stab_name(last_in_stab), | |
792 | (long)stab_io(last_in_stab)->lines); | |
378cc40b LW |
793 | s += strlen(s); |
794 | } | |
a687059c | 795 | (void)strcpy(s,".\n"); |
378cc40b LW |
796 | } |
797 | } | |
798 | ||
8d063cd8 LW |
799 | /*VARARGS1*/ |
800 | fatal(pat,a1,a2,a3,a4) | |
801 | char *pat; | |
a687059c | 802 | long a1, a2, a3, a4; |
8d063cd8 LW |
803 | { |
804 | extern FILE *e_fp; | |
805 | extern char *e_tmpname; | |
9f68db38 | 806 | char *tmps; |
8d063cd8 | 807 | |
378cc40b | 808 | mess(pat,a1,a2,a3,a4); |
a559c259 | 809 | if (in_eval) { |
a687059c | 810 | str_set(stab_val(stabent("@",TRUE)),buf); |
9f68db38 LW |
811 | tmps = "_EVAL_"; |
812 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || | |
813 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { | |
814 | #ifdef DEBUGGING | |
815 | if (debug & 4) { | |
816 | deb("(Skipping label #%d %s)\n",loop_ptr, | |
817 | loop_stack[loop_ptr].loop_label); | |
818 | } | |
819 | #endif | |
820 | loop_ptr--; | |
821 | } | |
822 | #ifdef DEBUGGING | |
823 | if (debug & 4) { | |
824 | deb("(Found label #%d %s)\n",loop_ptr, | |
825 | loop_stack[loop_ptr].loop_label); | |
826 | } | |
827 | #endif | |
828 | if (loop_ptr < 0) { | |
829 | in_eval = 0; | |
830 | fatal("Bad label: %s", tmps); | |
831 | } | |
832 | longjmp(loop_stack[loop_ptr].loop_env, 1); | |
a559c259 | 833 | } |
a687059c LW |
834 | fputs(buf,stderr); |
835 | (void)fflush(stderr); | |
8d063cd8 | 836 | if (e_fp) |
a687059c | 837 | (void)UNLINK(e_tmpname); |
378cc40b | 838 | statusvalue >>= 8; |
27e2fb84 | 839 | exit((int)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
378cc40b LW |
840 | } |
841 | ||
842 | /*VARARGS1*/ | |
843 | warn(pat,a1,a2,a3,a4) | |
844 | char *pat; | |
a687059c | 845 | long a1, a2, a3, a4; |
378cc40b LW |
846 | { |
847 | mess(pat,a1,a2,a3,a4); | |
a687059c LW |
848 | fputs(buf,stderr); |
849 | #ifdef LEAKTEST | |
850 | #ifdef DEBUGGING | |
851 | if (debug & 4096) | |
852 | xstat(); | |
853 | #endif | |
854 | #endif | |
855 | (void)fflush(stderr); | |
8d063cd8 | 856 | } |
a687059c LW |
857 | #else |
858 | /*VARARGS0*/ | |
859 | mess(args) | |
860 | va_list args; | |
861 | { | |
862 | char *pat; | |
863 | char *s; | |
d48672a2 | 864 | #ifndef HAS_VPRINTF |
a687059c LW |
865 | #ifdef CHARVSPRINTF |
866 | char *vsprintf(); | |
867 | #else | |
868 | int vsprintf(); | |
869 | #endif | |
d48672a2 | 870 | #endif |
a687059c LW |
871 | |
872 | s = buf; | |
873 | #ifdef lint | |
874 | pat = Nullch; | |
875 | #else | |
876 | pat = va_arg(args, char *); | |
877 | #endif | |
878 | (void) vsprintf(s,pat,args); | |
879 | ||
880 | s += strlen(s); | |
881 | if (s[-1] != '\n') { | |
62b28dd9 | 882 | if (curcmd->c_line) { |
20188a90 LW |
883 | (void)sprintf(s," at %s line %ld", |
884 | stab_val(curcmd->c_filestab)->str_ptr, (long)curcmd->c_line); | |
a687059c LW |
885 | s += strlen(s); |
886 | } | |
887 | if (last_in_stab && | |
888 | stab_io(last_in_stab) && | |
889 | stab_io(last_in_stab)->lines ) { | |
890 | (void)sprintf(s,", <%s> line %ld", | |
891 | last_in_stab == argvstab ? "" : last_in_stab->str_magic->str_ptr, | |
892 | (long)stab_io(last_in_stab)->lines); | |
893 | s += strlen(s); | |
894 | } | |
895 | (void)strcpy(s,".\n"); | |
896 | } | |
897 | } | |
898 | ||
899 | /*VARARGS0*/ | |
900 | fatal(va_alist) | |
901 | va_dcl | |
902 | { | |
903 | va_list args; | |
904 | extern FILE *e_fp; | |
905 | extern char *e_tmpname; | |
9f68db38 | 906 | char *tmps; |
a687059c LW |
907 | |
908 | #ifndef lint | |
909 | va_start(args); | |
910 | #else | |
911 | args = 0; | |
912 | #endif | |
913 | mess(args); | |
914 | va_end(args); | |
915 | if (in_eval) { | |
916 | str_set(stab_val(stabent("@",TRUE)),buf); | |
9f68db38 LW |
917 | tmps = "_EVAL_"; |
918 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || | |
919 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { | |
920 | #ifdef DEBUGGING | |
921 | if (debug & 4) { | |
922 | deb("(Skipping label #%d %s)\n",loop_ptr, | |
923 | loop_stack[loop_ptr].loop_label); | |
924 | } | |
925 | #endif | |
926 | loop_ptr--; | |
927 | } | |
928 | #ifdef DEBUGGING | |
929 | if (debug & 4) { | |
930 | deb("(Found label #%d %s)\n",loop_ptr, | |
931 | loop_stack[loop_ptr].loop_label); | |
932 | } | |
933 | #endif | |
934 | if (loop_ptr < 0) { | |
935 | in_eval = 0; | |
936 | fatal("Bad label: %s", tmps); | |
937 | } | |
938 | longjmp(loop_stack[loop_ptr].loop_env, 1); | |
a687059c LW |
939 | } |
940 | fputs(buf,stderr); | |
941 | (void)fflush(stderr); | |
942 | if (e_fp) | |
943 | (void)UNLINK(e_tmpname); | |
944 | statusvalue >>= 8; | |
27e2fb84 | 945 | exit((int)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
a687059c LW |
946 | } |
947 | ||
948 | /*VARARGS0*/ | |
949 | warn(va_alist) | |
950 | va_dcl | |
951 | { | |
952 | va_list args; | |
953 | ||
954 | #ifndef lint | |
955 | va_start(args); | |
956 | #else | |
957 | args = 0; | |
958 | #endif | |
959 | mess(args); | |
960 | va_end(args); | |
961 | ||
962 | fputs(buf,stderr); | |
963 | #ifdef LEAKTEST | |
964 | #ifdef DEBUGGING | |
965 | if (debug & 4096) | |
966 | xstat(); | |
967 | #endif | |
968 | #endif | |
969 | (void)fflush(stderr); | |
970 | } | |
971 | #endif | |
8d063cd8 | 972 | |
8d063cd8 LW |
973 | void |
974 | setenv(nam,val) | |
975 | char *nam, *val; | |
976 | { | |
977 | register int i=envix(nam); /* where does it go? */ | |
978 | ||
fe14fcc3 LW |
979 | if (environ == origenviron) { /* need we copy environment? */ |
980 | int j; | |
981 | int max; | |
982 | char **tmpenv; | |
983 | ||
984 | for (max = i; environ[max]; max++) ; | |
985 | New(901,tmpenv, max+2, char*); | |
986 | for (j=0; j<max; j++) /* copy environment */ | |
987 | tmpenv[j] = savestr(environ[j]); | |
988 | tmpenv[max] = Nullch; | |
989 | environ = tmpenv; /* tell exec where it is now */ | |
990 | } | |
a687059c LW |
991 | if (!val) { |
992 | while (environ[i]) { | |
993 | environ[i] = environ[i+1]; | |
994 | i++; | |
995 | } | |
996 | return; | |
997 | } | |
8d063cd8 | 998 | if (!environ[i]) { /* does not exist yet */ |
fe14fcc3 | 999 | Renew(environ, i+2, char*); /* just expand it a bit */ |
8d063cd8 LW |
1000 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
1001 | } | |
fe14fcc3 LW |
1002 | else |
1003 | Safefree(environ[i]); | |
a687059c | 1004 | New(904, environ[i], strlen(nam) + strlen(val) + 2, char); |
62b28dd9 | 1005 | #ifndef MSDOS |
a687059c | 1006 | (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */ |
62b28dd9 LW |
1007 | #else |
1008 | /* MS-DOS requires environment variable names to be in uppercase */ | |
fe14fcc3 LW |
1009 | /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but |
1010 | * some utilities and applications may break because they only look | |
1011 | * for upper case strings. (Fixed strupr() bug here.)] | |
1012 | */ | |
1013 | strcpy(environ[i],nam); strupr(environ[i]); | |
62b28dd9 LW |
1014 | (void)sprintf(environ[i] + strlen(nam),"=%s",val); |
1015 | #endif /* MSDOS */ | |
8d063cd8 LW |
1016 | } |
1017 | ||
1018 | int | |
1019 | envix(nam) | |
1020 | char *nam; | |
1021 | { | |
1022 | register int i, len = strlen(nam); | |
1023 | ||
1024 | for (i = 0; environ[i]; i++) { | |
1025 | if (strnEQ(environ[i],nam,len) && environ[i][len] == '=') | |
1026 | break; /* strnEQ must come first to avoid */ | |
1027 | } /* potential SEGV's */ | |
1028 | return i; | |
1029 | } | |
378cc40b LW |
1030 | |
1031 | #ifdef EUNICE | |
1032 | unlnk(f) /* unlink all versions of a file */ | |
1033 | char *f; | |
1034 | { | |
1035 | int i; | |
1036 | ||
1037 | for (i = 0; unlink(f) >= 0; i++) ; | |
1038 | return i ? 0 : -1; | |
1039 | } | |
1040 | #endif | |
1041 | ||
fe14fcc3 LW |
1042 | #ifndef HAS_MEMCPY |
1043 | #ifndef HAS_BCOPY | |
378cc40b LW |
1044 | char * |
1045 | bcopy(from,to,len) | |
1046 | register char *from; | |
1047 | register char *to; | |
1048 | register int len; | |
1049 | { | |
1050 | char *retval = to; | |
1051 | ||
1052 | while (len--) | |
1053 | *to++ = *from++; | |
1054 | return retval; | |
1055 | } | |
ffed7fef | 1056 | #endif |
378cc40b | 1057 | |
fe14fcc3 | 1058 | #ifndef HAS_BZERO |
378cc40b LW |
1059 | char * |
1060 | bzero(loc,len) | |
1061 | register char *loc; | |
1062 | register int len; | |
1063 | { | |
1064 | char *retval = loc; | |
1065 | ||
1066 | while (len--) | |
1067 | *loc++ = 0; | |
1068 | return retval; | |
1069 | } | |
1070 | #endif | |
1071 | #endif | |
a687059c | 1072 | |
35c8bce7 | 1073 | #ifdef I_VARARGS |
fe14fcc3 | 1074 | #ifndef HAS_VPRINTF |
a687059c LW |
1075 | |
1076 | #ifdef CHARVSPRINTF | |
1077 | char * | |
1078 | #else | |
1079 | int | |
1080 | #endif | |
1081 | vsprintf(dest, pat, args) | |
1082 | char *dest, *pat, *args; | |
1083 | { | |
1084 | FILE fakebuf; | |
1085 | ||
1086 | fakebuf._ptr = dest; | |
1087 | fakebuf._cnt = 32767; | |
35c8bce7 LW |
1088 | #ifndef _IOSTRG |
1089 | #define _IOSTRG 0 | |
1090 | #endif | |
a687059c LW |
1091 | fakebuf._flag = _IOWRT|_IOSTRG; |
1092 | _doprnt(pat, args, &fakebuf); /* what a kludge */ | |
1093 | (void)putc('\0', &fakebuf); | |
1094 | #ifdef CHARVSPRINTF | |
1095 | return(dest); | |
1096 | #else | |
1097 | return 0; /* perl doesn't use return value */ | |
1098 | #endif | |
1099 | } | |
1100 | ||
1101 | #ifdef DEBUGGING | |
1102 | int | |
1103 | vfprintf(fd, pat, args) | |
1104 | FILE *fd; | |
1105 | char *pat, *args; | |
1106 | { | |
1107 | _doprnt(pat, args, fd); | |
1108 | return 0; /* wrong, but perl doesn't use the return value */ | |
1109 | } | |
1110 | #endif | |
fe14fcc3 | 1111 | #endif /* HAS_VPRINTF */ |
35c8bce7 | 1112 | #endif /* I_VARARGS */ |
a687059c LW |
1113 | |
1114 | #ifdef MYSWAP | |
ffed7fef | 1115 | #if BYTEORDER != 0x4321 |
a687059c LW |
1116 | short |
1117 | my_swap(s) | |
1118 | short s; | |
1119 | { | |
1120 | #if (BYTEORDER & 1) == 0 | |
1121 | short result; | |
1122 | ||
1123 | result = ((s & 255) << 8) + ((s >> 8) & 255); | |
1124 | return result; | |
1125 | #else | |
1126 | return s; | |
1127 | #endif | |
1128 | } | |
1129 | ||
1130 | long | |
1131 | htonl(l) | |
1132 | register long l; | |
1133 | { | |
1134 | union { | |
1135 | long result; | |
ffed7fef | 1136 | char c[sizeof(long)]; |
a687059c LW |
1137 | } u; |
1138 | ||
ffed7fef | 1139 | #if BYTEORDER == 0x1234 |
a687059c LW |
1140 | u.c[0] = (l >> 24) & 255; |
1141 | u.c[1] = (l >> 16) & 255; | |
1142 | u.c[2] = (l >> 8) & 255; | |
1143 | u.c[3] = l & 255; | |
1144 | return u.result; | |
1145 | #else | |
ffed7fef | 1146 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
a687059c LW |
1147 | fatal("Unknown BYTEORDER\n"); |
1148 | #else | |
1149 | register int o; | |
1150 | register int s; | |
1151 | ||
ffed7fef LW |
1152 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1153 | u.c[o & 0xf] = (l >> s) & 255; | |
a687059c LW |
1154 | } |
1155 | return u.result; | |
1156 | #endif | |
1157 | #endif | |
1158 | } | |
1159 | ||
1160 | long | |
1161 | ntohl(l) | |
1162 | register long l; | |
1163 | { | |
1164 | union { | |
1165 | long l; | |
ffed7fef | 1166 | char c[sizeof(long)]; |
a687059c LW |
1167 | } u; |
1168 | ||
ffed7fef | 1169 | #if BYTEORDER == 0x1234 |
a687059c LW |
1170 | u.c[0] = (l >> 24) & 255; |
1171 | u.c[1] = (l >> 16) & 255; | |
1172 | u.c[2] = (l >> 8) & 255; | |
1173 | u.c[3] = l & 255; | |
1174 | return u.l; | |
1175 | #else | |
ffed7fef | 1176 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
a687059c LW |
1177 | fatal("Unknown BYTEORDER\n"); |
1178 | #else | |
1179 | register int o; | |
1180 | register int s; | |
1181 | ||
1182 | u.l = l; | |
1183 | l = 0; | |
ffed7fef LW |
1184 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1185 | l |= (u.c[o & 0xf] & 255) << s; | |
a687059c LW |
1186 | } |
1187 | return l; | |
1188 | #endif | |
1189 | #endif | |
1190 | } | |
1191 | ||
ffed7fef | 1192 | #endif /* BYTEORDER != 0x4321 */ |
fe14fcc3 | 1193 | #endif /* HAS_HTONS */ |
a687059c | 1194 | |
0f85fab0 | 1195 | #ifndef MSDOS |
a687059c LW |
1196 | FILE * |
1197 | mypopen(cmd,mode) | |
1198 | char *cmd; | |
1199 | char *mode; | |
1200 | { | |
1201 | int p[2]; | |
1202 | register int this, that; | |
1203 | register int pid; | |
1204 | STR *str; | |
1205 | int doexec = strNE(cmd,"-"); | |
1206 | ||
1207 | if (pipe(p) < 0) | |
1208 | return Nullfp; | |
1209 | this = (*mode == 'w'); | |
1210 | that = !this; | |
d48672a2 LW |
1211 | #ifdef TAINT |
1212 | if (doexec) { | |
1213 | taintenv(); | |
1214 | taintproper("Insecure dependency in exec"); | |
1215 | } | |
1216 | #endif | |
a687059c LW |
1217 | while ((pid = (doexec?vfork():fork())) < 0) { |
1218 | if (errno != EAGAIN) { | |
1219 | close(p[this]); | |
1220 | if (!doexec) | |
1221 | fatal("Can't fork"); | |
1222 | return Nullfp; | |
1223 | } | |
1224 | sleep(5); | |
1225 | } | |
1226 | if (pid == 0) { | |
1227 | #define THIS that | |
1228 | #define THAT this | |
1229 | close(p[THAT]); | |
1230 | if (p[THIS] != (*mode == 'r')) { | |
1231 | dup2(p[THIS], *mode == 'r'); | |
1232 | close(p[THIS]); | |
1233 | } | |
1234 | if (doexec) { | |
d48672a2 | 1235 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
ae986130 LW |
1236 | int fd; |
1237 | ||
1238 | #ifndef NOFILE | |
1239 | #define NOFILE 20 | |
1240 | #endif | |
d48672a2 | 1241 | for (fd = maxsysfd + 1; fd < NOFILE; fd++) |
ae986130 LW |
1242 | close(fd); |
1243 | #endif | |
a687059c LW |
1244 | do_exec(cmd); /* may or may not use the shell */ |
1245 | _exit(1); | |
1246 | } | |
1247 | if (tmpstab = stabent("$",allstabs)) | |
1248 | str_numset(STAB_STR(tmpstab),(double)getpid()); | |
9f68db38 | 1249 | forkprocess = 0; |
fe14fcc3 | 1250 | hclear(pidstatus, FALSE); /* we have no children */ |
a687059c LW |
1251 | return Nullfp; |
1252 | #undef THIS | |
1253 | #undef THAT | |
1254 | } | |
62b28dd9 | 1255 | do_execfree(); /* free any memory malloced by child on vfork */ |
a687059c | 1256 | close(p[that]); |
62b28dd9 LW |
1257 | if (p[that] < p[this]) { |
1258 | dup2(p[this], p[that]); | |
1259 | close(p[this]); | |
1260 | p[this] = p[that]; | |
1261 | } | |
20188a90 LW |
1262 | str = afetch(fdpid,p[this],TRUE); |
1263 | str->str_u.str_useful = pid; | |
a687059c LW |
1264 | forkprocess = pid; |
1265 | return fdopen(p[this], mode); | |
1266 | } | |
0f85fab0 | 1267 | #endif /* !MSDOS */ |
a687059c | 1268 | |
ae986130 LW |
1269 | #ifdef NOTDEF |
1270 | dumpfds(s) | |
1271 | char *s; | |
1272 | { | |
1273 | int fd; | |
1274 | struct stat tmpstatbuf; | |
1275 | ||
1276 | fprintf(stderr,"%s", s); | |
1277 | for (fd = 0; fd < 32; fd++) { | |
1278 | if (fstat(fd,&tmpstatbuf) >= 0) | |
1279 | fprintf(stderr," %d",fd); | |
1280 | } | |
1281 | fprintf(stderr,"\n"); | |
1282 | } | |
1283 | #endif | |
1284 | ||
fe14fcc3 | 1285 | #ifndef HAS_DUP2 |
a687059c LW |
1286 | dup2(oldfd,newfd) |
1287 | int oldfd; | |
1288 | int newfd; | |
1289 | { | |
fe14fcc3 | 1290 | #if defined(HAS_FCNTL) && defined(F_DUPFD) |
62b28dd9 LW |
1291 | close(newfd); |
1292 | fcntl(oldfd, F_DUPFD, newfd); | |
1293 | #else | |
d48672a2 | 1294 | int fdtmp[256]; |
ae986130 LW |
1295 | int fdx = 0; |
1296 | int fd; | |
1297 | ||
fe14fcc3 LW |
1298 | if (oldfd == newfd) |
1299 | return 0; | |
a687059c | 1300 | close(newfd); |
ae986130 LW |
1301 | while ((fd = dup(oldfd)) != newfd) /* good enough for low fd's */ |
1302 | fdtmp[fdx++] = fd; | |
1303 | while (fdx > 0) | |
1304 | close(fdtmp[--fdx]); | |
62b28dd9 | 1305 | #endif |
a687059c LW |
1306 | } |
1307 | #endif | |
1308 | ||
0f85fab0 | 1309 | #ifndef MSDOS |
a687059c LW |
1310 | int |
1311 | mypclose(ptr) | |
1312 | FILE *ptr; | |
1313 | { | |
a687059c LW |
1314 | #ifdef VOIDSIG |
1315 | void (*hstat)(), (*istat)(), (*qstat)(); | |
1316 | #else | |
1317 | int (*hstat)(), (*istat)(), (*qstat)(); | |
1318 | #endif | |
1319 | int status; | |
1320 | STR *str; | |
20188a90 | 1321 | int pid; |
a687059c | 1322 | |
20188a90 LW |
1323 | str = afetch(fdpid,fileno(ptr),TRUE); |
1324 | astore(fdpid,fileno(ptr),Nullstr); | |
a687059c | 1325 | fclose(ptr); |
20188a90 | 1326 | pid = (int)str->str_u.str_useful; |
a687059c LW |
1327 | hstat = signal(SIGHUP, SIG_IGN); |
1328 | istat = signal(SIGINT, SIG_IGN); | |
1329 | qstat = signal(SIGQUIT, SIG_IGN); | |
20188a90 LW |
1330 | pid = wait4pid(pid, &status, 0); |
1331 | signal(SIGHUP, hstat); | |
1332 | signal(SIGINT, istat); | |
1333 | signal(SIGQUIT, qstat); | |
1334 | return(pid < 0 ? pid : status); | |
1335 | } | |
1336 | ||
1337 | int | |
1338 | wait4pid(pid,statusp,flags) | |
1339 | int pid; | |
1340 | int *statusp; | |
1341 | int flags; | |
1342 | { | |
1343 | int result; | |
1344 | STR *str; | |
1345 | char spid[16]; | |
1346 | ||
1347 | if (!pid) | |
1348 | return -1; | |
fe14fcc3 LW |
1349 | #ifdef HAS_WAIT4 |
1350 | return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *)); | |
a687059c | 1351 | #else |
fe14fcc3 | 1352 | #ifdef HAS_WAITPID |
20188a90 LW |
1353 | return waitpid(pid,statusp,flags); |
1354 | #else | |
1355 | if (pid > 0) { | |
1356 | sprintf(spid, "%d", pid); | |
e5d73d77 | 1357 | str = hfetch(pidstatus,spid,strlen(spid),FALSE); |
20188a90 LW |
1358 | if (str != &str_undef) { |
1359 | *statusp = (int)str->str_u.str_useful; | |
e5d73d77 | 1360 | hdelete(pidstatus,spid,strlen(spid)); |
20188a90 LW |
1361 | return pid; |
1362 | } | |
1363 | } | |
1364 | else { | |
1365 | HENT *entry; | |
1366 | ||
1367 | hiterinit(pidstatus); | |
1368 | if (entry = hiternext(pidstatus)) { | |
1369 | pid = atoi(hiterkey(entry,statusp)); | |
1370 | str = hiterval(entry); | |
1371 | *statusp = (int)str->str_u.str_useful; | |
1372 | sprintf(spid, "%d", pid); | |
e5d73d77 | 1373 | hdelete(pidstatus,spid,strlen(spid)); |
20188a90 LW |
1374 | return pid; |
1375 | } | |
1376 | } | |
1377 | if (flags) | |
1378 | fatal("Can't do waitpid with flags"); | |
a687059c | 1379 | else { |
20188a90 LW |
1380 | while ((result = wait(statusp)) != pid && pid > 0 && result >= 0) |
1381 | pidgone(result,*statusp); | |
a687059c | 1382 | if (result < 0) |
20188a90 | 1383 | *statusp = -1; |
a687059c | 1384 | } |
e5d73d77 | 1385 | return result; |
a687059c | 1386 | #endif |
20188a90 | 1387 | #endif |
a687059c LW |
1388 | } |
1389 | ||
1390 | pidgone(pid,status) | |
1391 | int pid; | |
1392 | int status; | |
1393 | { | |
fe14fcc3 | 1394 | #if defined(HAS_WAIT4) || defined(HAS_WAITPID) |
a687059c | 1395 | #else |
a687059c | 1396 | register STR *str; |
20188a90 | 1397 | char spid[16]; |
a687059c | 1398 | |
20188a90 | 1399 | sprintf(spid, "%d", pid); |
e5d73d77 | 1400 | str = hfetch(pidstatus,spid,strlen(spid),TRUE); |
20188a90 | 1401 | str->str_u.str_useful = status; |
a687059c | 1402 | #endif |
20188a90 | 1403 | return; |
a687059c | 1404 | } |
fe14fcc3 | 1405 | #endif /* !MSDOS */ |
a687059c | 1406 | |
fe14fcc3 | 1407 | #ifndef HAS_MEMCMP |
a687059c LW |
1408 | memcmp(s1,s2,len) |
1409 | register unsigned char *s1; | |
1410 | register unsigned char *s2; | |
1411 | register int len; | |
1412 | { | |
1413 | register int tmp; | |
1414 | ||
1415 | while (len--) { | |
1416 | if (tmp = *s1++ - *s2++) | |
1417 | return tmp; | |
1418 | } | |
1419 | return 0; | |
1420 | } | |
fe14fcc3 | 1421 | #endif /* HAS_MEMCMP */ |
9f68db38 LW |
1422 | |
1423 | void | |
1424 | repeatcpy(to,from,len,count) | |
1425 | register char *to; | |
1426 | register char *from; | |
1427 | int len; | |
1428 | register int count; | |
1429 | { | |
1430 | register int todo; | |
1431 | register char *frombase = from; | |
1432 | ||
1433 | if (len == 1) { | |
1434 | todo = *from; | |
1435 | while (count-- > 0) | |
1436 | *to++ = todo; | |
1437 | return; | |
1438 | } | |
1439 | while (count-- > 0) { | |
1440 | for (todo = len; todo > 0; todo--) { | |
1441 | *to++ = *from++; | |
1442 | } | |
1443 | from = frombase; | |
1444 | } | |
1445 | } | |
0f85fab0 LW |
1446 | |
1447 | #ifndef CASTNEGFLOAT | |
1448 | unsigned long | |
1449 | castulong(f) | |
1450 | double f; | |
1451 | { | |
1452 | long along; | |
1453 | ||
27e2fb84 | 1454 | #if CASTFLAGS & 2 |
34de22dd LW |
1455 | # define BIGDOUBLE 2147483648.0 |
1456 | if (f >= BIGDOUBLE) | |
1457 | return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000; | |
1458 | #endif | |
0f85fab0 LW |
1459 | if (f >= 0.0) |
1460 | return (unsigned long)f; | |
1461 | along = (long)f; | |
1462 | return (unsigned long)along; | |
1463 | } | |
1464 | #endif | |
62b28dd9 | 1465 | |
fe14fcc3 | 1466 | #ifndef HAS_RENAME |
62b28dd9 LW |
1467 | int |
1468 | same_dirent(a,b) | |
1469 | char *a; | |
1470 | char *b; | |
1471 | { | |
1472 | char *fa = rindex(a,'/'); | |
1473 | char *fb = rindex(b,'/'); | |
1474 | struct stat tmpstatbuf1; | |
1475 | struct stat tmpstatbuf2; | |
1476 | #ifndef MAXPATHLEN | |
1477 | #define MAXPATHLEN 1024 | |
1478 | #endif | |
1479 | char tmpbuf[MAXPATHLEN+1]; | |
1480 | ||
1481 | if (fa) | |
1482 | fa++; | |
1483 | else | |
1484 | fa = a; | |
1485 | if (fb) | |
1486 | fb++; | |
1487 | else | |
1488 | fb = b; | |
1489 | if (strNE(a,b)) | |
1490 | return FALSE; | |
1491 | if (fa == a) | |
6eb13c3b | 1492 | strcpy(tmpbuf,"."); |
62b28dd9 LW |
1493 | else |
1494 | strncpy(tmpbuf, a, fa - a); | |
1495 | if (stat(tmpbuf, &tmpstatbuf1) < 0) | |
1496 | return FALSE; | |
1497 | if (fb == b) | |
6eb13c3b | 1498 | strcpy(tmpbuf,"."); |
62b28dd9 LW |
1499 | else |
1500 | strncpy(tmpbuf, b, fb - b); | |
1501 | if (stat(tmpbuf, &tmpstatbuf2) < 0) | |
1502 | return FALSE; | |
1503 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && | |
1504 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; | |
1505 | } | |
fe14fcc3 LW |
1506 | #endif /* !HAS_RENAME */ |
1507 | ||
1508 | unsigned long | |
1509 | scanoct(start, len, retlen) | |
1510 | char *start; | |
1511 | int len; | |
1512 | int *retlen; | |
1513 | { | |
1514 | register char *s = start; | |
1515 | register unsigned long retval = 0; | |
1516 | ||
1517 | while (len-- && *s >= '0' && *s <= '7') { | |
1518 | retval <<= 3; | |
1519 | retval |= *s++ - '0'; | |
1520 | } | |
1521 | *retlen = s - start; | |
1522 | return retval; | |
1523 | } | |
1524 | ||
1525 | unsigned long | |
1526 | scanhex(start, len, retlen) | |
1527 | char *start; | |
1528 | int len; | |
1529 | int *retlen; | |
1530 | { | |
1531 | register char *s = start; | |
1532 | register unsigned long retval = 0; | |
1533 | char *tmp; | |
1534 | ||
1535 | while (len-- && *s && (tmp = index(hexdigit, *s))) { | |
1536 | retval <<= 4; | |
1537 | retval |= (tmp - hexdigit) & 15; | |
1538 | s++; | |
1539 | } | |
1540 | *retlen = s - start; | |
1541 | return retval; | |
1542 | } |