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7c0587c8 | 1 | /* $RCSfile: util.c,v $$Revision: 4.0.1.5 $$Date: 92/06/08 16:08:37 $ |
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 $ | |
7c0587c8 LW |
9 | * Revision 4.0.1.5 92/06/08 16:08:37 lwall |
10 | * patch20: removed implicit int declarations on functions | |
11 | * patch20: Perl now distinguishes overlapped copies from non-overlapped | |
12 | * patch20: fixed confusion between a *var's real name and its effective name | |
13 | * patch20: bcopy() and memcpy() now tested for overlap safety | |
14 | * patch20: added Atari ST portability | |
15 | * | |
988174c1 LW |
16 | * Revision 4.0.1.4 91/11/11 16:48:54 lwall |
17 | * patch19: study was busted by 4.018 | |
18 | * patch19: added little-endian pack/unpack options | |
19 | * | |
de3bb511 LW |
20 | * Revision 4.0.1.3 91/11/05 19:18:26 lwall |
21 | * patch11: safe malloc code now integrated into Perl's malloc when possible | |
22 | * patch11: index("little", "longer string") could visit faraway places | |
23 | * patch11: warn '-' x 10000 dumped core | |
24 | * patch11: forked exec on non-existent program now issues a warning | |
25 | * | |
d48672a2 LW |
26 | * Revision 4.0.1.2 91/06/07 12:10:42 lwall |
27 | * patch4: new copyright notice | |
28 | * patch4: made some allowances for "semi-standard" C | |
29 | * patch4: index() could blow up searching for null string | |
30 | * patch4: taintchecks could improperly modify parent in vfork() | |
31 | * patch4: exec would close files even if you cleared close-on-exec flag | |
32 | * | |
35c8bce7 LW |
33 | * Revision 4.0.1.1 91/04/12 09:19:25 lwall |
34 | * patch1: random cleanup in cpp namespace | |
35 | * | |
fe14fcc3 LW |
36 | * Revision 4.0 91/03/20 01:56:39 lwall |
37 | * 4.0 baseline. | |
8d063cd8 LW |
38 | * |
39 | */ | |
de3bb511 | 40 | /*SUPPRESS 112*/ |
8d063cd8 | 41 | |
8d063cd8 | 42 | #include "EXTERN.h" |
8d063cd8 | 43 | #include "perl.h" |
62b28dd9 | 44 | |
6eb13c3b | 45 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
a687059c | 46 | #include <signal.h> |
62b28dd9 | 47 | #endif |
a687059c LW |
48 | |
49 | #ifdef I_VFORK | |
50 | # include <vfork.h> | |
51 | #endif | |
52 | ||
53 | #ifdef I_VARARGS | |
54 | # include <varargs.h> | |
55 | #endif | |
8d063cd8 | 56 | |
fe14fcc3 LW |
57 | #ifdef I_FCNTL |
58 | # include <fcntl.h> | |
59 | #endif | |
60 | #ifdef I_SYS_FILE | |
61 | # include <sys/file.h> | |
62 | #endif | |
63 | ||
8d063cd8 | 64 | #define FLUSH |
8d063cd8 | 65 | |
de3bb511 LW |
66 | #ifndef safemalloc |
67 | ||
8d063cd8 LW |
68 | static char nomem[] = "Out of memory!\n"; |
69 | ||
70 | /* paranoid version of malloc */ | |
71 | ||
378cc40b | 72 | #ifdef DEBUGGING |
8d063cd8 | 73 | static int an = 0; |
378cc40b | 74 | #endif |
8d063cd8 | 75 | |
a687059c LW |
76 | /* NOTE: Do not call the next three routines directly. Use the macros |
77 | * in handy.h, so that we can easily redefine everything to do tracking of | |
78 | * allocated hunks back to the original New to track down any memory leaks. | |
79 | */ | |
80 | ||
8d063cd8 LW |
81 | char * |
82 | safemalloc(size) | |
62b28dd9 LW |
83 | #ifdef MSDOS |
84 | unsigned long size; | |
85 | #else | |
8d063cd8 | 86 | MEM_SIZE size; |
62b28dd9 | 87 | #endif /* MSDOS */ |
8d063cd8 LW |
88 | { |
89 | char *ptr; | |
d48672a2 | 90 | #ifndef STANDARD_C |
8d063cd8 | 91 | char *malloc(); |
d48672a2 | 92 | #endif /* ! STANDARD_C */ |
8d063cd8 | 93 | |
62b28dd9 LW |
94 | #ifdef MSDOS |
95 | if (size > 0xffff) { | |
96 | fprintf(stderr, "Allocation too large: %lx\n", size) FLUSH; | |
97 | exit(1); | |
98 | } | |
99 | #endif /* MSDOS */ | |
34de22dd LW |
100 | #ifdef DEBUGGING |
101 | if ((long)size < 0) | |
102 | fatal("panic: malloc"); | |
103 | #endif | |
8d063cd8 LW |
104 | ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
105 | #ifdef DEBUGGING | |
7c0587c8 | 106 | # if !(defined(I286) || defined(atarist)) |
8d063cd8 | 107 | if (debug & 128) |
7c0587c8 | 108 | fprintf(stderr,"0x%x: (%05d) malloc %ld bytes\n",ptr,an++,(long)size); |
a687059c LW |
109 | # else |
110 | if (debug & 128) | |
7c0587c8 | 111 | fprintf(stderr,"0x%lx: (%05d) malloc %ld bytes\n",ptr,an++,(long)size); |
a687059c | 112 | # endif |
8d063cd8 LW |
113 | #endif |
114 | if (ptr != Nullch) | |
115 | return ptr; | |
7c0587c8 LW |
116 | else if (nomemok) |
117 | return Nullch; | |
8d063cd8 | 118 | else { |
34de22dd | 119 | fputs(nomem,stderr) FLUSH; |
8d063cd8 LW |
120 | exit(1); |
121 | } | |
122 | /*NOTREACHED*/ | |
a687059c LW |
123 | #ifdef lint |
124 | return ptr; | |
125 | #endif | |
8d063cd8 LW |
126 | } |
127 | ||
128 | /* paranoid version of realloc */ | |
129 | ||
130 | char * | |
131 | saferealloc(where,size) | |
132 | char *where; | |
62b28dd9 | 133 | #ifndef MSDOS |
8d063cd8 | 134 | MEM_SIZE size; |
62b28dd9 LW |
135 | #else |
136 | unsigned long size; | |
137 | #endif /* MSDOS */ | |
8d063cd8 LW |
138 | { |
139 | char *ptr; | |
d48672a2 | 140 | #ifndef STANDARD_C |
8d063cd8 | 141 | char *realloc(); |
d48672a2 | 142 | #endif /* ! STANDARD_C */ |
8d063cd8 | 143 | |
62b28dd9 LW |
144 | #ifdef MSDOS |
145 | if (size > 0xffff) { | |
146 | fprintf(stderr, "Reallocation too large: %lx\n", size) FLUSH; | |
147 | exit(1); | |
148 | } | |
149 | #endif /* MSDOS */ | |
378cc40b LW |
150 | if (!where) |
151 | fatal("Null realloc"); | |
34de22dd LW |
152 | #ifdef DEBUGGING |
153 | if ((long)size < 0) | |
154 | fatal("panic: realloc"); | |
155 | #endif | |
8d063cd8 LW |
156 | ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */ |
157 | #ifdef DEBUGGING | |
7c0587c8 | 158 | # if !(defined(I286) || defined(atarist)) |
8d063cd8 LW |
159 | if (debug & 128) { |
160 | fprintf(stderr,"0x%x: (%05d) rfree\n",where,an++); | |
7c0587c8 | 161 | fprintf(stderr,"0x%x: (%05d) realloc %ld bytes\n",ptr,an++,(long)size); |
8d063cd8 | 162 | } |
a687059c LW |
163 | # else |
164 | if (debug & 128) { | |
165 | fprintf(stderr,"0x%lx: (%05d) rfree\n",where,an++); | |
7c0587c8 | 166 | fprintf(stderr,"0x%lx: (%05d) realloc %ld bytes\n",ptr,an++,(long)size); |
a687059c LW |
167 | } |
168 | # endif | |
8d063cd8 LW |
169 | #endif |
170 | if (ptr != Nullch) | |
171 | return ptr; | |
7c0587c8 LW |
172 | else if (nomemok) |
173 | return Nullch; | |
8d063cd8 | 174 | else { |
34de22dd | 175 | fputs(nomem,stderr) FLUSH; |
8d063cd8 LW |
176 | exit(1); |
177 | } | |
178 | /*NOTREACHED*/ | |
a687059c LW |
179 | #ifdef lint |
180 | return ptr; | |
181 | #endif | |
8d063cd8 LW |
182 | } |
183 | ||
184 | /* safe version of free */ | |
185 | ||
a687059c | 186 | void |
8d063cd8 LW |
187 | safefree(where) |
188 | char *where; | |
189 | { | |
190 | #ifdef DEBUGGING | |
7c0587c8 | 191 | # if !(defined(I286) || defined(atarist)) |
8d063cd8 LW |
192 | if (debug & 128) |
193 | fprintf(stderr,"0x%x: (%05d) free\n",where,an++); | |
a687059c LW |
194 | # else |
195 | if (debug & 128) | |
196 | fprintf(stderr,"0x%lx: (%05d) free\n",where,an++); | |
197 | # endif | |
8d063cd8 | 198 | #endif |
378cc40b | 199 | if (where) { |
de3bb511 | 200 | /*SUPPRESS 701*/ |
378cc40b LW |
201 | free(where); |
202 | } | |
8d063cd8 LW |
203 | } |
204 | ||
de3bb511 LW |
205 | #endif /* !safemalloc */ |
206 | ||
a687059c LW |
207 | #ifdef LEAKTEST |
208 | ||
209 | #define ALIGN sizeof(long) | |
8d063cd8 LW |
210 | |
211 | char * | |
a687059c LW |
212 | safexmalloc(x,size) |
213 | int x; | |
214 | MEM_SIZE size; | |
8d063cd8 | 215 | { |
a687059c | 216 | register char *where; |
8d063cd8 | 217 | |
a687059c LW |
218 | where = safemalloc(size + ALIGN); |
219 | xcount[x]++; | |
220 | where[0] = x % 100; | |
221 | where[1] = x / 100; | |
222 | return where + ALIGN; | |
8d063cd8 | 223 | } |
8d063cd8 LW |
224 | |
225 | char * | |
a687059c LW |
226 | safexrealloc(where,size) |
227 | char *where; | |
228 | MEM_SIZE size; | |
229 | { | |
230 | return saferealloc(where - ALIGN, size + ALIGN) + ALIGN; | |
231 | } | |
232 | ||
233 | void | |
234 | safexfree(where) | |
235 | char *where; | |
236 | { | |
237 | int x; | |
238 | ||
239 | if (!where) | |
240 | return; | |
241 | where -= ALIGN; | |
242 | x = where[0] + 100 * where[1]; | |
243 | xcount[x]--; | |
244 | safefree(where); | |
245 | } | |
246 | ||
7c0587c8 | 247 | static void |
a687059c | 248 | xstat() |
8d063cd8 | 249 | { |
a687059c | 250 | register int i; |
8d063cd8 | 251 | |
a687059c | 252 | for (i = 0; i < MAXXCOUNT; i++) { |
de3bb511 | 253 | if (xcount[i] > lastxcount[i]) { |
a687059c LW |
254 | fprintf(stderr,"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]); |
255 | lastxcount[i] = xcount[i]; | |
8d063cd8 LW |
256 | } |
257 | } | |
8d063cd8 | 258 | } |
a687059c LW |
259 | |
260 | #endif /* LEAKTEST */ | |
8d063cd8 LW |
261 | |
262 | /* copy a string up to some (non-backslashed) delimiter, if any */ | |
263 | ||
264 | char * | |
a687059c | 265 | cpytill(to,from,fromend,delim,retlen) |
62b28dd9 LW |
266 | register char *to; |
267 | register char *from; | |
a687059c | 268 | register char *fromend; |
8d063cd8 | 269 | register int delim; |
a687059c | 270 | int *retlen; |
8d063cd8 | 271 | { |
a687059c LW |
272 | char *origto = to; |
273 | ||
274 | for (; from < fromend; from++,to++) { | |
378cc40b LW |
275 | if (*from == '\\') { |
276 | if (from[1] == delim) | |
277 | from++; | |
278 | else if (from[1] == '\\') | |
279 | *to++ = *from++; | |
280 | } | |
8d063cd8 LW |
281 | else if (*from == delim) |
282 | break; | |
283 | *to = *from; | |
284 | } | |
285 | *to = '\0'; | |
a687059c | 286 | *retlen = to - origto; |
8d063cd8 LW |
287 | return from; |
288 | } | |
289 | ||
290 | /* return ptr to little string in big string, NULL if not found */ | |
378cc40b | 291 | /* This routine was donated by Corey Satten. */ |
8d063cd8 LW |
292 | |
293 | char * | |
294 | instr(big, little) | |
378cc40b LW |
295 | register char *big; |
296 | register char *little; | |
297 | { | |
298 | register char *s, *x; | |
a687059c | 299 | register int first; |
378cc40b | 300 | |
a687059c LW |
301 | if (!little) |
302 | return big; | |
303 | first = *little++; | |
378cc40b LW |
304 | if (!first) |
305 | return big; | |
306 | while (*big) { | |
307 | if (*big++ != first) | |
308 | continue; | |
309 | for (x=big,s=little; *s; /**/ ) { | |
310 | if (!*x) | |
311 | return Nullch; | |
312 | if (*s++ != *x++) { | |
313 | s--; | |
314 | break; | |
315 | } | |
316 | } | |
317 | if (!*s) | |
318 | return big-1; | |
319 | } | |
320 | return Nullch; | |
321 | } | |
8d063cd8 | 322 | |
a687059c LW |
323 | /* same as instr but allow embedded nulls */ |
324 | ||
325 | char * | |
326 | ninstr(big, bigend, little, lend) | |
327 | register char *big; | |
328 | register char *bigend; | |
329 | char *little; | |
330 | char *lend; | |
8d063cd8 | 331 | { |
a687059c LW |
332 | register char *s, *x; |
333 | register int first = *little; | |
334 | register char *littleend = lend; | |
378cc40b | 335 | |
a687059c LW |
336 | if (!first && little > littleend) |
337 | return big; | |
de3bb511 LW |
338 | if (bigend - big < littleend - little) |
339 | return Nullch; | |
a687059c LW |
340 | bigend -= littleend - little++; |
341 | while (big <= bigend) { | |
342 | if (*big++ != first) | |
343 | continue; | |
344 | for (x=big,s=little; s < littleend; /**/ ) { | |
345 | if (*s++ != *x++) { | |
346 | s--; | |
347 | break; | |
348 | } | |
349 | } | |
350 | if (s >= littleend) | |
351 | return big-1; | |
378cc40b | 352 | } |
a687059c LW |
353 | return Nullch; |
354 | } | |
355 | ||
356 | /* reverse of the above--find last substring */ | |
357 | ||
358 | char * | |
359 | rninstr(big, bigend, little, lend) | |
360 | register char *big; | |
361 | char *bigend; | |
362 | char *little; | |
363 | char *lend; | |
364 | { | |
365 | register char *bigbeg; | |
366 | register char *s, *x; | |
367 | register int first = *little; | |
368 | register char *littleend = lend; | |
369 | ||
370 | if (!first && little > littleend) | |
371 | return bigend; | |
372 | bigbeg = big; | |
373 | big = bigend - (littleend - little++); | |
374 | while (big >= bigbeg) { | |
375 | if (*big-- != first) | |
376 | continue; | |
377 | for (x=big+2,s=little; s < littleend; /**/ ) { | |
378 | if (*s++ != *x++) { | |
379 | s--; | |
380 | break; | |
381 | } | |
382 | } | |
383 | if (s >= littleend) | |
384 | return big+1; | |
378cc40b | 385 | } |
a687059c | 386 | return Nullch; |
378cc40b | 387 | } |
a687059c LW |
388 | |
389 | unsigned char fold[] = { | |
390 | 0, 1, 2, 3, 4, 5, 6, 7, | |
391 | 8, 9, 10, 11, 12, 13, 14, 15, | |
392 | 16, 17, 18, 19, 20, 21, 22, 23, | |
393 | 24, 25, 26, 27, 28, 29, 30, 31, | |
394 | 32, 33, 34, 35, 36, 37, 38, 39, | |
395 | 40, 41, 42, 43, 44, 45, 46, 47, | |
396 | 48, 49, 50, 51, 52, 53, 54, 55, | |
397 | 56, 57, 58, 59, 60, 61, 62, 63, | |
398 | 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', | |
399 | 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', | |
400 | 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', | |
401 | 'x', 'y', 'z', 91, 92, 93, 94, 95, | |
402 | 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G', | |
403 | 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', | |
404 | 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', | |
405 | 'X', 'Y', 'Z', 123, 124, 125, 126, 127, | |
406 | 128, 129, 130, 131, 132, 133, 134, 135, | |
407 | 136, 137, 138, 139, 140, 141, 142, 143, | |
408 | 144, 145, 146, 147, 148, 149, 150, 151, | |
409 | 152, 153, 154, 155, 156, 157, 158, 159, | |
410 | 160, 161, 162, 163, 164, 165, 166, 167, | |
411 | 168, 169, 170, 171, 172, 173, 174, 175, | |
412 | 176, 177, 178, 179, 180, 181, 182, 183, | |
413 | 184, 185, 186, 187, 188, 189, 190, 191, | |
414 | 192, 193, 194, 195, 196, 197, 198, 199, | |
415 | 200, 201, 202, 203, 204, 205, 206, 207, | |
416 | 208, 209, 210, 211, 212, 213, 214, 215, | |
417 | 216, 217, 218, 219, 220, 221, 222, 223, | |
418 | 224, 225, 226, 227, 228, 229, 230, 231, | |
419 | 232, 233, 234, 235, 236, 237, 238, 239, | |
420 | 240, 241, 242, 243, 244, 245, 246, 247, | |
421 | 248, 249, 250, 251, 252, 253, 254, 255 | |
422 | }; | |
378cc40b LW |
423 | |
424 | static unsigned char freq[] = { | |
425 | 1, 2, 84, 151, 154, 155, 156, 157, | |
426 | 165, 246, 250, 3, 158, 7, 18, 29, | |
427 | 40, 51, 62, 73, 85, 96, 107, 118, | |
428 | 129, 140, 147, 148, 149, 150, 152, 153, | |
429 | 255, 182, 224, 205, 174, 176, 180, 217, | |
430 | 233, 232, 236, 187, 235, 228, 234, 226, | |
431 | 222, 219, 211, 195, 188, 193, 185, 184, | |
432 | 191, 183, 201, 229, 181, 220, 194, 162, | |
433 | 163, 208, 186, 202, 200, 218, 198, 179, | |
434 | 178, 214, 166, 170, 207, 199, 209, 206, | |
435 | 204, 160, 212, 216, 215, 192, 175, 173, | |
436 | 243, 172, 161, 190, 203, 189, 164, 230, | |
437 | 167, 248, 227, 244, 242, 255, 241, 231, | |
438 | 240, 253, 169, 210, 245, 237, 249, 247, | |
439 | 239, 168, 252, 251, 254, 238, 223, 221, | |
440 | 213, 225, 177, 197, 171, 196, 159, 4, | |
441 | 5, 6, 8, 9, 10, 11, 12, 13, | |
442 | 14, 15, 16, 17, 19, 20, 21, 22, | |
443 | 23, 24, 25, 26, 27, 28, 30, 31, | |
444 | 32, 33, 34, 35, 36, 37, 38, 39, | |
445 | 41, 42, 43, 44, 45, 46, 47, 48, | |
446 | 49, 50, 52, 53, 54, 55, 56, 57, | |
447 | 58, 59, 60, 61, 63, 64, 65, 66, | |
448 | 67, 68, 69, 70, 71, 72, 74, 75, | |
449 | 76, 77, 78, 79, 80, 81, 82, 83, | |
450 | 86, 87, 88, 89, 90, 91, 92, 93, | |
451 | 94, 95, 97, 98, 99, 100, 101, 102, | |
452 | 103, 104, 105, 106, 108, 109, 110, 111, | |
453 | 112, 113, 114, 115, 116, 117, 119, 120, | |
454 | 121, 122, 123, 124, 125, 126, 127, 128, | |
455 | 130, 131, 132, 133, 134, 135, 136, 137, | |
456 | 138, 139, 141, 142, 143, 144, 145, 146 | |
457 | }; | |
8d063cd8 | 458 | |
378cc40b | 459 | void |
a687059c | 460 | fbmcompile(str, iflag) |
378cc40b | 461 | STR *str; |
a687059c | 462 | int iflag; |
378cc40b | 463 | { |
a687059c LW |
464 | register unsigned char *s; |
465 | register unsigned char *table; | |
de3bb511 LW |
466 | register unsigned int i; |
467 | register unsigned int len = str->str_cur; | |
378cc40b | 468 | int rarest = 0; |
20188a90 | 469 | unsigned int frequency = 256; |
378cc40b | 470 | |
62b28dd9 | 471 | Str_Grow(str,len+258); |
a687059c LW |
472 | #ifndef lint |
473 | table = (unsigned char*)(str->str_ptr + len + 1); | |
474 | #else | |
475 | table = Null(unsigned char*); | |
476 | #endif | |
477 | s = table - 2; | |
478 | for (i = 0; i < 256; i++) { | |
378cc40b LW |
479 | table[i] = len; |
480 | } | |
481 | i = 0; | |
a687059c LW |
482 | #ifndef lint |
483 | while (s >= (unsigned char*)(str->str_ptr)) | |
484 | #endif | |
485 | { | |
486 | if (table[*s] == len) { | |
487 | #ifndef pdp11 | |
488 | if (iflag) | |
489 | table[*s] = table[fold[*s]] = i; | |
490 | #else | |
491 | if (iflag) { | |
492 | int j; | |
493 | j = fold[*s]; | |
494 | table[j] = i; | |
495 | table[*s] = i; | |
496 | } | |
497 | #endif /* pdp11 */ | |
498 | else | |
499 | table[*s] = i; | |
500 | } | |
378cc40b LW |
501 | s--,i++; |
502 | } | |
a687059c | 503 | str->str_pok |= SP_FBM; /* deep magic */ |
378cc40b | 504 | |
a687059c LW |
505 | #ifndef lint |
506 | s = (unsigned char*)(str->str_ptr); /* deeper magic */ | |
507 | #else | |
508 | s = Null(unsigned char*); | |
509 | #endif | |
510 | if (iflag) { | |
20188a90 | 511 | register unsigned int tmp, foldtmp; |
a687059c LW |
512 | str->str_pok |= SP_CASEFOLD; |
513 | for (i = 0; i < len; i++) { | |
514 | tmp=freq[s[i]]; | |
515 | foldtmp=freq[fold[s[i]]]; | |
516 | if (tmp < frequency && foldtmp < frequency) { | |
517 | rarest = i; | |
518 | /* choose most frequent among the two */ | |
519 | frequency = (tmp > foldtmp) ? tmp : foldtmp; | |
520 | } | |
521 | } | |
522 | } | |
523 | else { | |
524 | for (i = 0; i < len; i++) { | |
525 | if (freq[s[i]] < frequency) { | |
526 | rarest = i; | |
527 | frequency = freq[s[i]]; | |
528 | } | |
378cc40b LW |
529 | } |
530 | } | |
531 | str->str_rare = s[rarest]; | |
a687059c | 532 | str->str_state = rarest; |
378cc40b LW |
533 | #ifdef DEBUGGING |
534 | if (debug & 512) | |
a687059c | 535 | fprintf(stderr,"rarest char %c at %d\n",str->str_rare, str->str_state); |
378cc40b LW |
536 | #endif |
537 | } | |
538 | ||
378cc40b LW |
539 | char * |
540 | fbminstr(big, bigend, littlestr) | |
a687059c LW |
541 | unsigned char *big; |
542 | register unsigned char *bigend; | |
378cc40b LW |
543 | STR *littlestr; |
544 | { | |
a687059c | 545 | register unsigned char *s; |
378cc40b LW |
546 | register int tmp; |
547 | register int littlelen; | |
a687059c LW |
548 | register unsigned char *little; |
549 | register unsigned char *table; | |
550 | register unsigned char *olds; | |
551 | register unsigned char *oldlittle; | |
378cc40b | 552 | |
a687059c | 553 | #ifndef lint |
d48672a2 LW |
554 | if (!(littlestr->str_pok & SP_FBM)) { |
555 | if (!littlestr->str_ptr) | |
556 | return (char*)big; | |
9f68db38 LW |
557 | return ninstr((char*)big,(char*)bigend, |
558 | littlestr->str_ptr, littlestr->str_ptr + littlestr->str_cur); | |
d48672a2 | 559 | } |
a687059c | 560 | #endif |
378cc40b LW |
561 | |
562 | littlelen = littlestr->str_cur; | |
a687059c LW |
563 | #ifndef lint |
564 | if (littlestr->str_pok & SP_TAIL && !multiline) { /* tail anchored? */ | |
0f85fab0 LW |
565 | if (littlelen > bigend - big) |
566 | return Nullch; | |
a687059c LW |
567 | little = (unsigned char*)littlestr->str_ptr; |
568 | if (littlestr->str_pok & SP_CASEFOLD) { /* oops, fake it */ | |
569 | big = bigend - littlelen; /* just start near end */ | |
570 | if (bigend[-1] == '\n' && little[littlelen-1] != '\n') | |
571 | big--; | |
378cc40b LW |
572 | } |
573 | else { | |
a687059c LW |
574 | s = bigend - littlelen; |
575 | if (*s == *little && bcmp(s,little,littlelen)==0) | |
576 | return (char*)s; /* how sweet it is */ | |
34de22dd LW |
577 | else if (bigend[-1] == '\n' && little[littlelen-1] != '\n' |
578 | && s > big) { | |
a687059c LW |
579 | s--; |
580 | if (*s == *little && bcmp(s,little,littlelen)==0) | |
581 | return (char*)s; | |
582 | } | |
583 | return Nullch; | |
584 | } | |
585 | } | |
586 | table = (unsigned char*)(littlestr->str_ptr + littlelen + 1); | |
587 | #else | |
588 | table = Null(unsigned char*); | |
589 | #endif | |
62b28dd9 LW |
590 | if (--littlelen >= bigend - big) |
591 | return Nullch; | |
592 | s = big + littlelen; | |
a687059c LW |
593 | oldlittle = little = table - 2; |
594 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insensitive? */ | |
20188a90 | 595 | if (s < bigend) { |
a687059c | 596 | top1: |
de3bb511 | 597 | /*SUPPRESS 560*/ |
a687059c | 598 | if (tmp = table[*s]) { |
62b28dd9 LW |
599 | #ifdef POINTERRIGOR |
600 | if (bigend - s > tmp) { | |
601 | s += tmp; | |
602 | goto top1; | |
603 | } | |
604 | #else | |
605 | if ((s += tmp) < bigend) | |
606 | goto top1; | |
607 | #endif | |
608 | return Nullch; | |
a687059c LW |
609 | } |
610 | else { | |
611 | tmp = littlelen; /* less expensive than calling strncmp() */ | |
612 | olds = s; | |
613 | while (tmp--) { | |
614 | if (*--s == *--little || fold[*s] == *little) | |
615 | continue; | |
616 | s = olds + 1; /* here we pay the price for failure */ | |
617 | little = oldlittle; | |
618 | if (s < bigend) /* fake up continue to outer loop */ | |
619 | goto top1; | |
620 | return Nullch; | |
621 | } | |
622 | #ifndef lint | |
623 | return (char *)s; | |
624 | #endif | |
625 | } | |
626 | } | |
627 | } | |
628 | else { | |
20188a90 | 629 | if (s < bigend) { |
a687059c | 630 | top2: |
de3bb511 | 631 | /*SUPPRESS 560*/ |
a687059c | 632 | if (tmp = table[*s]) { |
62b28dd9 LW |
633 | #ifdef POINTERRIGOR |
634 | if (bigend - s > tmp) { | |
635 | s += tmp; | |
636 | goto top2; | |
637 | } | |
638 | #else | |
639 | if ((s += tmp) < bigend) | |
640 | goto top2; | |
641 | #endif | |
642 | return Nullch; | |
a687059c LW |
643 | } |
644 | else { | |
645 | tmp = littlelen; /* less expensive than calling strncmp() */ | |
646 | olds = s; | |
647 | while (tmp--) { | |
648 | if (*--s == *--little) | |
649 | continue; | |
650 | s = olds + 1; /* here we pay the price for failure */ | |
651 | little = oldlittle; | |
652 | if (s < bigend) /* fake up continue to outer loop */ | |
653 | goto top2; | |
654 | return Nullch; | |
655 | } | |
656 | #ifndef lint | |
657 | return (char *)s; | |
658 | #endif | |
378cc40b | 659 | } |
378cc40b LW |
660 | } |
661 | } | |
662 | return Nullch; | |
663 | } | |
664 | ||
665 | char * | |
666 | screaminstr(bigstr, littlestr) | |
667 | STR *bigstr; | |
668 | STR *littlestr; | |
669 | { | |
a687059c LW |
670 | register unsigned char *s, *x; |
671 | register unsigned char *big; | |
378cc40b LW |
672 | register int pos; |
673 | register int previous; | |
674 | register int first; | |
a687059c LW |
675 | register unsigned char *little; |
676 | register unsigned char *bigend; | |
677 | register unsigned char *littleend; | |
378cc40b LW |
678 | |
679 | if ((pos = screamfirst[littlestr->str_rare]) < 0) | |
680 | return Nullch; | |
a687059c LW |
681 | #ifndef lint |
682 | little = (unsigned char *)(littlestr->str_ptr); | |
683 | #else | |
684 | little = Null(unsigned char *); | |
685 | #endif | |
686 | littleend = little + littlestr->str_cur; | |
378cc40b | 687 | first = *little++; |
a687059c LW |
688 | previous = littlestr->str_state; |
689 | #ifndef lint | |
690 | big = (unsigned char *)(bigstr->str_ptr); | |
691 | #else | |
692 | big = Null(unsigned char*); | |
693 | #endif | |
694 | bigend = big + bigstr->str_cur; | |
378cc40b | 695 | while (pos < previous) { |
a687059c | 696 | #ifndef lint |
378cc40b | 697 | if (!(pos += screamnext[pos])) |
a687059c | 698 | #endif |
378cc40b LW |
699 | return Nullch; |
700 | } | |
de3bb511 | 701 | #ifdef POINTERRIGOR |
a687059c LW |
702 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insignificant? */ |
703 | do { | |
988174c1 LW |
704 | if (big[pos-previous] != first && big[pos-previous] != fold[first]) |
705 | continue; | |
de3bb511 LW |
706 | for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) { |
707 | if (x >= bigend) | |
708 | return Nullch; | |
709 | if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) { | |
710 | s--; | |
711 | break; | |
712 | } | |
713 | } | |
714 | if (s == littleend) | |
715 | #ifndef lint | |
716 | return (char *)(big+pos-previous); | |
717 | #else | |
718 | return Nullch; | |
719 | #endif | |
720 | } while ( | |
721 | #ifndef lint | |
722 | pos += screamnext[pos] /* does this goof up anywhere? */ | |
723 | #else | |
724 | pos += screamnext[0] | |
725 | #endif | |
726 | ); | |
727 | } | |
728 | else { | |
729 | do { | |
988174c1 LW |
730 | if (big[pos-previous] != first) |
731 | continue; | |
de3bb511 LW |
732 | for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) { |
733 | if (x >= bigend) | |
734 | return Nullch; | |
735 | if (*s++ != *x++) { | |
736 | s--; | |
737 | break; | |
738 | } | |
739 | } | |
740 | if (s == littleend) | |
741 | #ifndef lint | |
742 | return (char *)(big+pos-previous); | |
743 | #else | |
744 | return Nullch; | |
745 | #endif | |
746 | } while ( | |
747 | #ifndef lint | |
748 | pos += screamnext[pos] | |
749 | #else | |
750 | pos += screamnext[0] | |
751 | #endif | |
752 | ); | |
753 | } | |
754 | #else /* !POINTERRIGOR */ | |
755 | big -= previous; | |
756 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insignificant? */ | |
757 | do { | |
988174c1 LW |
758 | if (big[pos] != first && big[pos] != fold[first]) |
759 | continue; | |
a687059c LW |
760 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { |
761 | if (x >= bigend) | |
762 | return Nullch; | |
763 | if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) { | |
764 | s--; | |
765 | break; | |
766 | } | |
767 | } | |
768 | if (s == littleend) | |
769 | #ifndef lint | |
770 | return (char *)(big+pos); | |
771 | #else | |
8d063cd8 | 772 | return Nullch; |
a687059c LW |
773 | #endif |
774 | } while ( | |
775 | #ifndef lint | |
776 | pos += screamnext[pos] /* does this goof up anywhere? */ | |
777 | #else | |
778 | pos += screamnext[0] | |
779 | #endif | |
780 | ); | |
781 | } | |
782 | else { | |
783 | do { | |
988174c1 LW |
784 | if (big[pos] != first) |
785 | continue; | |
a687059c LW |
786 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { |
787 | if (x >= bigend) | |
788 | return Nullch; | |
789 | if (*s++ != *x++) { | |
790 | s--; | |
791 | break; | |
792 | } | |
378cc40b | 793 | } |
a687059c LW |
794 | if (s == littleend) |
795 | #ifndef lint | |
796 | return (char *)(big+pos); | |
797 | #else | |
798 | return Nullch; | |
799 | #endif | |
800 | } while ( | |
801 | #ifndef lint | |
802 | pos += screamnext[pos] | |
803 | #else | |
804 | pos += screamnext[0] | |
805 | #endif | |
806 | ); | |
807 | } | |
de3bb511 | 808 | #endif /* POINTERRIGOR */ |
8d063cd8 LW |
809 | return Nullch; |
810 | } | |
811 | ||
812 | /* copy a string to a safe spot */ | |
813 | ||
814 | char * | |
815 | savestr(str) | |
816 | char *str; | |
817 | { | |
a687059c | 818 | register char *newaddr; |
8d063cd8 | 819 | |
a687059c | 820 | New(902,newaddr,strlen(str)+1,char); |
8d063cd8 LW |
821 | (void)strcpy(newaddr,str); |
822 | return newaddr; | |
823 | } | |
824 | ||
a687059c LW |
825 | /* same thing but with a known length */ |
826 | ||
827 | char * | |
828 | nsavestr(str, len) | |
829 | char *str; | |
830 | register int len; | |
831 | { | |
832 | register char *newaddr; | |
833 | ||
834 | New(903,newaddr,len+1,char); | |
7c0587c8 | 835 | Copy(str,newaddr,len,char); /* might not be null terminated */ |
a687059c LW |
836 | newaddr[len] = '\0'; /* is now */ |
837 | return newaddr; | |
838 | } | |
839 | ||
8d063cd8 LW |
840 | /* grow a static string to at least a certain length */ |
841 | ||
842 | void | |
843 | growstr(strptr,curlen,newlen) | |
844 | char **strptr; | |
845 | int *curlen; | |
846 | int newlen; | |
847 | { | |
848 | if (newlen > *curlen) { /* need more room? */ | |
849 | if (*curlen) | |
a687059c | 850 | Renew(*strptr,newlen,char); |
8d063cd8 | 851 | else |
a687059c | 852 | New(905,*strptr,newlen,char); |
8d063cd8 LW |
853 | *curlen = newlen; |
854 | } | |
855 | } | |
856 | ||
35c8bce7 | 857 | #ifndef I_VARARGS |
378cc40b | 858 | /*VARARGS1*/ |
7c0587c8 | 859 | char * |
378cc40b LW |
860 | mess(pat,a1,a2,a3,a4) |
861 | char *pat; | |
a687059c | 862 | long a1, a2, a3, a4; |
378cc40b LW |
863 | { |
864 | char *s; | |
de3bb511 LW |
865 | int usermess = strEQ(pat,"%s"); |
866 | STR *tmpstr; | |
378cc40b | 867 | |
a687059c | 868 | s = buf; |
de3bb511 LW |
869 | if (usermess) { |
870 | tmpstr = str_mortal(&str_undef); | |
871 | str_set(tmpstr, (char*)a1); | |
872 | *s++ = tmpstr->str_ptr[tmpstr->str_cur-1]; | |
873 | } | |
874 | else { | |
875 | (void)sprintf(s,pat,a1,a2,a3,a4); | |
876 | s += strlen(s); | |
877 | } | |
878 | ||
378cc40b | 879 | if (s[-1] != '\n') { |
62b28dd9 | 880 | if (curcmd->c_line) { |
20188a90 LW |
881 | (void)sprintf(s," at %s line %ld", |
882 | stab_val(curcmd->c_filestab)->str_ptr, (long)curcmd->c_line); | |
378cc40b LW |
883 | s += strlen(s); |
884 | } | |
885 | if (last_in_stab && | |
a687059c LW |
886 | stab_io(last_in_stab) && |
887 | stab_io(last_in_stab)->lines ) { | |
888 | (void)sprintf(s,", <%s> line %ld", | |
7c0587c8 | 889 | last_in_stab == argvstab ? "" : stab_ename(last_in_stab), |
a687059c | 890 | (long)stab_io(last_in_stab)->lines); |
378cc40b LW |
891 | s += strlen(s); |
892 | } | |
a687059c | 893 | (void)strcpy(s,".\n"); |
de3bb511 LW |
894 | if (usermess) |
895 | str_cat(tmpstr,buf+1); | |
378cc40b | 896 | } |
de3bb511 LW |
897 | if (usermess) |
898 | return tmpstr->str_ptr; | |
899 | else | |
900 | return buf; | |
378cc40b LW |
901 | } |
902 | ||
8d063cd8 | 903 | /*VARARGS1*/ |
7c0587c8 | 904 | void fatal(pat,a1,a2,a3,a4) |
8d063cd8 | 905 | char *pat; |
a687059c | 906 | long a1, a2, a3, a4; |
8d063cd8 LW |
907 | { |
908 | extern FILE *e_fp; | |
909 | extern char *e_tmpname; | |
9f68db38 | 910 | char *tmps; |
de3bb511 | 911 | char *message; |
8d063cd8 | 912 | |
de3bb511 | 913 | message = mess(pat,a1,a2,a3,a4); |
a559c259 | 914 | if (in_eval) { |
de3bb511 | 915 | str_set(stab_val(stabent("@",TRUE)),message); |
9f68db38 LW |
916 | tmps = "_EVAL_"; |
917 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || | |
918 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { | |
919 | #ifdef DEBUGGING | |
920 | if (debug & 4) { | |
921 | deb("(Skipping label #%d %s)\n",loop_ptr, | |
922 | loop_stack[loop_ptr].loop_label); | |
923 | } | |
924 | #endif | |
925 | loop_ptr--; | |
926 | } | |
927 | #ifdef DEBUGGING | |
928 | if (debug & 4) { | |
929 | deb("(Found label #%d %s)\n",loop_ptr, | |
930 | loop_stack[loop_ptr].loop_label); | |
931 | } | |
932 | #endif | |
933 | if (loop_ptr < 0) { | |
934 | in_eval = 0; | |
935 | fatal("Bad label: %s", tmps); | |
936 | } | |
937 | longjmp(loop_stack[loop_ptr].loop_env, 1); | |
a559c259 | 938 | } |
de3bb511 | 939 | fputs(message,stderr); |
a687059c | 940 | (void)fflush(stderr); |
8d063cd8 | 941 | if (e_fp) |
a687059c | 942 | (void)UNLINK(e_tmpname); |
378cc40b | 943 | statusvalue >>= 8; |
27e2fb84 | 944 | exit((int)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
378cc40b LW |
945 | } |
946 | ||
947 | /*VARARGS1*/ | |
7c0587c8 | 948 | void warn(pat,a1,a2,a3,a4) |
378cc40b | 949 | char *pat; |
a687059c | 950 | long a1, a2, a3, a4; |
378cc40b | 951 | { |
de3bb511 LW |
952 | char *message; |
953 | ||
954 | message = mess(pat,a1,a2,a3,a4); | |
955 | fputs(message,stderr); | |
a687059c LW |
956 | #ifdef LEAKTEST |
957 | #ifdef DEBUGGING | |
958 | if (debug & 4096) | |
959 | xstat(); | |
960 | #endif | |
961 | #endif | |
962 | (void)fflush(stderr); | |
8d063cd8 | 963 | } |
a687059c LW |
964 | #else |
965 | /*VARARGS0*/ | |
de3bb511 | 966 | char * |
a687059c LW |
967 | mess(args) |
968 | va_list args; | |
969 | { | |
970 | char *pat; | |
971 | char *s; | |
de3bb511 LW |
972 | STR *tmpstr; |
973 | int usermess; | |
d48672a2 | 974 | #ifndef HAS_VPRINTF |
a687059c LW |
975 | #ifdef CHARVSPRINTF |
976 | char *vsprintf(); | |
977 | #else | |
978 | int vsprintf(); | |
979 | #endif | |
d48672a2 | 980 | #endif |
a687059c | 981 | |
a687059c LW |
982 | #ifdef lint |
983 | pat = Nullch; | |
984 | #else | |
985 | pat = va_arg(args, char *); | |
986 | #endif | |
de3bb511 LW |
987 | s = buf; |
988 | usermess = strEQ(pat, "%s"); | |
989 | if (usermess) { | |
990 | tmpstr = str_mortal(&str_undef); | |
991 | str_set(tmpstr, va_arg(args, char *)); | |
992 | *s++ = tmpstr->str_ptr[tmpstr->str_cur-1]; | |
993 | } | |
994 | else { | |
995 | (void) vsprintf(s,pat,args); | |
996 | s += strlen(s); | |
997 | } | |
a687059c | 998 | |
a687059c | 999 | if (s[-1] != '\n') { |
62b28dd9 | 1000 | if (curcmd->c_line) { |
20188a90 LW |
1001 | (void)sprintf(s," at %s line %ld", |
1002 | stab_val(curcmd->c_filestab)->str_ptr, (long)curcmd->c_line); | |
a687059c LW |
1003 | s += strlen(s); |
1004 | } | |
1005 | if (last_in_stab && | |
1006 | stab_io(last_in_stab) && | |
1007 | stab_io(last_in_stab)->lines ) { | |
1008 | (void)sprintf(s,", <%s> line %ld", | |
1009 | last_in_stab == argvstab ? "" : last_in_stab->str_magic->str_ptr, | |
1010 | (long)stab_io(last_in_stab)->lines); | |
1011 | s += strlen(s); | |
1012 | } | |
1013 | (void)strcpy(s,".\n"); | |
de3bb511 LW |
1014 | if (usermess) |
1015 | str_cat(tmpstr,buf+1); | |
a687059c | 1016 | } |
de3bb511 LW |
1017 | |
1018 | if (usermess) | |
1019 | return tmpstr->str_ptr; | |
1020 | else | |
1021 | return buf; | |
a687059c LW |
1022 | } |
1023 | ||
1024 | /*VARARGS0*/ | |
7c0587c8 | 1025 | void fatal(va_alist) |
a687059c LW |
1026 | va_dcl |
1027 | { | |
1028 | va_list args; | |
1029 | extern FILE *e_fp; | |
1030 | extern char *e_tmpname; | |
9f68db38 | 1031 | char *tmps; |
de3bb511 | 1032 | char *message; |
a687059c LW |
1033 | |
1034 | #ifndef lint | |
1035 | va_start(args); | |
1036 | #else | |
1037 | args = 0; | |
1038 | #endif | |
de3bb511 | 1039 | message = mess(args); |
a687059c LW |
1040 | va_end(args); |
1041 | if (in_eval) { | |
de3bb511 | 1042 | str_set(stab_val(stabent("@",TRUE)),message); |
9f68db38 LW |
1043 | tmps = "_EVAL_"; |
1044 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || | |
1045 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { | |
1046 | #ifdef DEBUGGING | |
1047 | if (debug & 4) { | |
1048 | deb("(Skipping label #%d %s)\n",loop_ptr, | |
1049 | loop_stack[loop_ptr].loop_label); | |
1050 | } | |
1051 | #endif | |
1052 | loop_ptr--; | |
1053 | } | |
1054 | #ifdef DEBUGGING | |
1055 | if (debug & 4) { | |
1056 | deb("(Found label #%d %s)\n",loop_ptr, | |
1057 | loop_stack[loop_ptr].loop_label); | |
1058 | } | |
1059 | #endif | |
1060 | if (loop_ptr < 0) { | |
1061 | in_eval = 0; | |
1062 | fatal("Bad label: %s", tmps); | |
1063 | } | |
1064 | longjmp(loop_stack[loop_ptr].loop_env, 1); | |
a687059c | 1065 | } |
de3bb511 | 1066 | fputs(message,stderr); |
a687059c LW |
1067 | (void)fflush(stderr); |
1068 | if (e_fp) | |
1069 | (void)UNLINK(e_tmpname); | |
1070 | statusvalue >>= 8; | |
27e2fb84 | 1071 | exit((int)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
a687059c LW |
1072 | } |
1073 | ||
1074 | /*VARARGS0*/ | |
7c0587c8 | 1075 | void warn(va_alist) |
a687059c LW |
1076 | va_dcl |
1077 | { | |
1078 | va_list args; | |
de3bb511 | 1079 | char *message; |
a687059c LW |
1080 | |
1081 | #ifndef lint | |
1082 | va_start(args); | |
1083 | #else | |
1084 | args = 0; | |
1085 | #endif | |
de3bb511 | 1086 | message = mess(args); |
a687059c LW |
1087 | va_end(args); |
1088 | ||
de3bb511 | 1089 | fputs(message,stderr); |
a687059c LW |
1090 | #ifdef LEAKTEST |
1091 | #ifdef DEBUGGING | |
1092 | if (debug & 4096) | |
1093 | xstat(); | |
1094 | #endif | |
1095 | #endif | |
1096 | (void)fflush(stderr); | |
1097 | } | |
1098 | #endif | |
8d063cd8 | 1099 | |
8d063cd8 | 1100 | void |
7c0587c8 | 1101 | my_setenv(nam,val) |
8d063cd8 LW |
1102 | char *nam, *val; |
1103 | { | |
1104 | register int i=envix(nam); /* where does it go? */ | |
1105 | ||
fe14fcc3 LW |
1106 | if (environ == origenviron) { /* need we copy environment? */ |
1107 | int j; | |
1108 | int max; | |
1109 | char **tmpenv; | |
1110 | ||
de3bb511 | 1111 | /*SUPPRESS 530*/ |
fe14fcc3 LW |
1112 | for (max = i; environ[max]; max++) ; |
1113 | New(901,tmpenv, max+2, char*); | |
1114 | for (j=0; j<max; j++) /* copy environment */ | |
1115 | tmpenv[j] = savestr(environ[j]); | |
1116 | tmpenv[max] = Nullch; | |
1117 | environ = tmpenv; /* tell exec where it is now */ | |
1118 | } | |
a687059c LW |
1119 | if (!val) { |
1120 | while (environ[i]) { | |
1121 | environ[i] = environ[i+1]; | |
1122 | i++; | |
1123 | } | |
1124 | return; | |
1125 | } | |
8d063cd8 | 1126 | if (!environ[i]) { /* does not exist yet */ |
fe14fcc3 | 1127 | Renew(environ, i+2, char*); /* just expand it a bit */ |
8d063cd8 LW |
1128 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
1129 | } | |
fe14fcc3 LW |
1130 | else |
1131 | Safefree(environ[i]); | |
a687059c | 1132 | New(904, environ[i], strlen(nam) + strlen(val) + 2, char); |
62b28dd9 | 1133 | #ifndef MSDOS |
a687059c | 1134 | (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */ |
62b28dd9 LW |
1135 | #else |
1136 | /* MS-DOS requires environment variable names to be in uppercase */ | |
fe14fcc3 LW |
1137 | /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but |
1138 | * some utilities and applications may break because they only look | |
1139 | * for upper case strings. (Fixed strupr() bug here.)] | |
1140 | */ | |
1141 | strcpy(environ[i],nam); strupr(environ[i]); | |
62b28dd9 LW |
1142 | (void)sprintf(environ[i] + strlen(nam),"=%s",val); |
1143 | #endif /* MSDOS */ | |
8d063cd8 LW |
1144 | } |
1145 | ||
1146 | int | |
1147 | envix(nam) | |
1148 | char *nam; | |
1149 | { | |
1150 | register int i, len = strlen(nam); | |
1151 | ||
1152 | for (i = 0; environ[i]; i++) { | |
1153 | if (strnEQ(environ[i],nam,len) && environ[i][len] == '=') | |
1154 | break; /* strnEQ must come first to avoid */ | |
1155 | } /* potential SEGV's */ | |
1156 | return i; | |
1157 | } | |
378cc40b LW |
1158 | |
1159 | #ifdef EUNICE | |
7c0587c8 | 1160 | int |
378cc40b LW |
1161 | unlnk(f) /* unlink all versions of a file */ |
1162 | char *f; | |
1163 | { | |
1164 | int i; | |
1165 | ||
1166 | for (i = 0; unlink(f) >= 0; i++) ; | |
1167 | return i ? 0 : -1; | |
1168 | } | |
1169 | #endif | |
1170 | ||
7c0587c8 | 1171 | #if !defined(HAS_BCOPY) || !defined(SAFE_BCOPY) |
378cc40b | 1172 | char * |
7c0587c8 | 1173 | my_bcopy(from,to,len) |
378cc40b LW |
1174 | register char *from; |
1175 | register char *to; | |
1176 | register int len; | |
1177 | { | |
1178 | char *retval = to; | |
1179 | ||
7c0587c8 LW |
1180 | if (from - to >= 0) { |
1181 | while (len--) | |
1182 | *to++ = *from++; | |
1183 | } | |
1184 | else { | |
1185 | to += len; | |
1186 | from += len; | |
1187 | while (len--) | |
1188 | --*to = --*from; | |
1189 | } | |
378cc40b LW |
1190 | return retval; |
1191 | } | |
ffed7fef | 1192 | #endif |
378cc40b | 1193 | |
7c0587c8 | 1194 | #if !defined(HAS_BZERO) && !defined(HAS_MEMSET) |
378cc40b | 1195 | char * |
7c0587c8 | 1196 | my_bzero(loc,len) |
378cc40b LW |
1197 | register char *loc; |
1198 | register int len; | |
1199 | { | |
1200 | char *retval = loc; | |
1201 | ||
1202 | while (len--) | |
1203 | *loc++ = 0; | |
1204 | return retval; | |
1205 | } | |
1206 | #endif | |
7c0587c8 LW |
1207 | |
1208 | #ifndef HAS_MEMCMP | |
1209 | int | |
1210 | my_memcmp(s1,s2,len) | |
1211 | register unsigned char *s1; | |
1212 | register unsigned char *s2; | |
1213 | register int len; | |
1214 | { | |
1215 | register int tmp; | |
1216 | ||
1217 | while (len--) { | |
1218 | if (tmp = *s1++ - *s2++) | |
1219 | return tmp; | |
1220 | } | |
1221 | return 0; | |
1222 | } | |
1223 | #endif /* HAS_MEMCMP */ | |
a687059c | 1224 | |
35c8bce7 | 1225 | #ifdef I_VARARGS |
fe14fcc3 | 1226 | #ifndef HAS_VPRINTF |
a687059c LW |
1227 | |
1228 | #ifdef CHARVSPRINTF | |
1229 | char * | |
1230 | #else | |
1231 | int | |
1232 | #endif | |
1233 | vsprintf(dest, pat, args) | |
1234 | char *dest, *pat, *args; | |
1235 | { | |
1236 | FILE fakebuf; | |
1237 | ||
1238 | fakebuf._ptr = dest; | |
1239 | fakebuf._cnt = 32767; | |
35c8bce7 LW |
1240 | #ifndef _IOSTRG |
1241 | #define _IOSTRG 0 | |
1242 | #endif | |
a687059c LW |
1243 | fakebuf._flag = _IOWRT|_IOSTRG; |
1244 | _doprnt(pat, args, &fakebuf); /* what a kludge */ | |
1245 | (void)putc('\0', &fakebuf); | |
1246 | #ifdef CHARVSPRINTF | |
1247 | return(dest); | |
1248 | #else | |
1249 | return 0; /* perl doesn't use return value */ | |
1250 | #endif | |
1251 | } | |
1252 | ||
1253 | #ifdef DEBUGGING | |
1254 | int | |
1255 | vfprintf(fd, pat, args) | |
1256 | FILE *fd; | |
1257 | char *pat, *args; | |
1258 | { | |
1259 | _doprnt(pat, args, fd); | |
1260 | return 0; /* wrong, but perl doesn't use the return value */ | |
1261 | } | |
1262 | #endif | |
fe14fcc3 | 1263 | #endif /* HAS_VPRINTF */ |
35c8bce7 | 1264 | #endif /* I_VARARGS */ |
a687059c | 1265 | |
988174c1 LW |
1266 | /* |
1267 | * I think my_swap(), htonl() and ntohl() have never been used. | |
1268 | * perl.h contains last-chance references to my_swap(), my_htonl() | |
1269 | * and my_ntohl(). I presume these are the intended functions; | |
1270 | * but htonl() and ntohl() have the wrong names. There are no | |
1271 | * functions my_htonl() and my_ntohl() defined anywhere. | |
1272 | * -DWS | |
1273 | */ | |
a687059c | 1274 | #ifdef MYSWAP |
ffed7fef | 1275 | #if BYTEORDER != 0x4321 |
a687059c LW |
1276 | short |
1277 | my_swap(s) | |
1278 | short s; | |
1279 | { | |
1280 | #if (BYTEORDER & 1) == 0 | |
1281 | short result; | |
1282 | ||
1283 | result = ((s & 255) << 8) + ((s >> 8) & 255); | |
1284 | return result; | |
1285 | #else | |
1286 | return s; | |
1287 | #endif | |
1288 | } | |
1289 | ||
1290 | long | |
1291 | htonl(l) | |
1292 | register long l; | |
1293 | { | |
1294 | union { | |
1295 | long result; | |
ffed7fef | 1296 | char c[sizeof(long)]; |
a687059c LW |
1297 | } u; |
1298 | ||
ffed7fef | 1299 | #if BYTEORDER == 0x1234 |
a687059c LW |
1300 | u.c[0] = (l >> 24) & 255; |
1301 | u.c[1] = (l >> 16) & 255; | |
1302 | u.c[2] = (l >> 8) & 255; | |
1303 | u.c[3] = l & 255; | |
1304 | return u.result; | |
1305 | #else | |
ffed7fef | 1306 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
a687059c LW |
1307 | fatal("Unknown BYTEORDER\n"); |
1308 | #else | |
1309 | register int o; | |
1310 | register int s; | |
1311 | ||
ffed7fef LW |
1312 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1313 | u.c[o & 0xf] = (l >> s) & 255; | |
a687059c LW |
1314 | } |
1315 | return u.result; | |
1316 | #endif | |
1317 | #endif | |
1318 | } | |
1319 | ||
1320 | long | |
1321 | ntohl(l) | |
1322 | register long l; | |
1323 | { | |
1324 | union { | |
1325 | long l; | |
ffed7fef | 1326 | char c[sizeof(long)]; |
a687059c LW |
1327 | } u; |
1328 | ||
ffed7fef | 1329 | #if BYTEORDER == 0x1234 |
a687059c LW |
1330 | u.c[0] = (l >> 24) & 255; |
1331 | u.c[1] = (l >> 16) & 255; | |
1332 | u.c[2] = (l >> 8) & 255; | |
1333 | u.c[3] = l & 255; | |
1334 | return u.l; | |
1335 | #else | |
ffed7fef | 1336 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
a687059c LW |
1337 | fatal("Unknown BYTEORDER\n"); |
1338 | #else | |
1339 | register int o; | |
1340 | register int s; | |
1341 | ||
1342 | u.l = l; | |
1343 | l = 0; | |
ffed7fef LW |
1344 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1345 | l |= (u.c[o & 0xf] & 255) << s; | |
a687059c LW |
1346 | } |
1347 | return l; | |
1348 | #endif | |
1349 | #endif | |
1350 | } | |
1351 | ||
ffed7fef | 1352 | #endif /* BYTEORDER != 0x4321 */ |
988174c1 LW |
1353 | #endif /* MYSWAP */ |
1354 | ||
1355 | /* | |
1356 | * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'. | |
1357 | * If these functions are defined, | |
1358 | * the BYTEORDER is neither 0x1234 nor 0x4321. | |
1359 | * However, this is not assumed. | |
1360 | * -DWS | |
1361 | */ | |
1362 | ||
1363 | #define HTOV(name,type) \ | |
1364 | type \ | |
1365 | name (n) \ | |
1366 | register type n; \ | |
1367 | { \ | |
1368 | union { \ | |
1369 | type value; \ | |
1370 | char c[sizeof(type)]; \ | |
1371 | } u; \ | |
1372 | register int i; \ | |
1373 | register int s; \ | |
1374 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ | |
1375 | u.c[i] = (n >> s) & 0xFF; \ | |
1376 | } \ | |
1377 | return u.value; \ | |
1378 | } | |
1379 | ||
1380 | #define VTOH(name,type) \ | |
1381 | type \ | |
1382 | name (n) \ | |
1383 | register type n; \ | |
1384 | { \ | |
1385 | union { \ | |
1386 | type value; \ | |
1387 | char c[sizeof(type)]; \ | |
1388 | } u; \ | |
1389 | register int i; \ | |
1390 | register int s; \ | |
1391 | u.value = n; \ | |
1392 | n = 0; \ | |
1393 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ | |
1394 | n += (u.c[i] & 0xFF) << s; \ | |
1395 | } \ | |
1396 | return n; \ | |
1397 | } | |
1398 | ||
1399 | #if defined(HAS_HTOVS) && !defined(htovs) | |
1400 | HTOV(htovs,short) | |
1401 | #endif | |
1402 | #if defined(HAS_HTOVL) && !defined(htovl) | |
1403 | HTOV(htovl,long) | |
1404 | #endif | |
1405 | #if defined(HAS_VTOHS) && !defined(vtohs) | |
1406 | VTOH(vtohs,short) | |
1407 | #endif | |
1408 | #if defined(HAS_VTOHL) && !defined(vtohl) | |
1409 | VTOH(vtohl,long) | |
1410 | #endif | |
a687059c | 1411 | |
7c0587c8 | 1412 | #ifndef DOSISH |
a687059c LW |
1413 | FILE * |
1414 | mypopen(cmd,mode) | |
1415 | char *cmd; | |
1416 | char *mode; | |
1417 | { | |
1418 | int p[2]; | |
1419 | register int this, that; | |
1420 | register int pid; | |
1421 | STR *str; | |
1422 | int doexec = strNE(cmd,"-"); | |
1423 | ||
1424 | if (pipe(p) < 0) | |
1425 | return Nullfp; | |
1426 | this = (*mode == 'w'); | |
1427 | that = !this; | |
d48672a2 LW |
1428 | #ifdef TAINT |
1429 | if (doexec) { | |
1430 | taintenv(); | |
1431 | taintproper("Insecure dependency in exec"); | |
1432 | } | |
1433 | #endif | |
a687059c LW |
1434 | while ((pid = (doexec?vfork():fork())) < 0) { |
1435 | if (errno != EAGAIN) { | |
1436 | close(p[this]); | |
1437 | if (!doexec) | |
1438 | fatal("Can't fork"); | |
1439 | return Nullfp; | |
1440 | } | |
1441 | sleep(5); | |
1442 | } | |
1443 | if (pid == 0) { | |
1444 | #define THIS that | |
1445 | #define THAT this | |
1446 | close(p[THAT]); | |
1447 | if (p[THIS] != (*mode == 'r')) { | |
1448 | dup2(p[THIS], *mode == 'r'); | |
1449 | close(p[THIS]); | |
1450 | } | |
1451 | if (doexec) { | |
d48672a2 | 1452 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
ae986130 LW |
1453 | int fd; |
1454 | ||
1455 | #ifndef NOFILE | |
1456 | #define NOFILE 20 | |
1457 | #endif | |
d48672a2 | 1458 | for (fd = maxsysfd + 1; fd < NOFILE; fd++) |
ae986130 LW |
1459 | close(fd); |
1460 | #endif | |
a687059c | 1461 | do_exec(cmd); /* may or may not use the shell */ |
de3bb511 | 1462 | warn("Can't exec \"%s\": %s", cmd, strerror(errno)); |
a687059c LW |
1463 | _exit(1); |
1464 | } | |
de3bb511 | 1465 | /*SUPPRESS 560*/ |
a687059c LW |
1466 | if (tmpstab = stabent("$",allstabs)) |
1467 | str_numset(STAB_STR(tmpstab),(double)getpid()); | |
9f68db38 | 1468 | forkprocess = 0; |
fe14fcc3 | 1469 | hclear(pidstatus, FALSE); /* we have no children */ |
a687059c LW |
1470 | return Nullfp; |
1471 | #undef THIS | |
1472 | #undef THAT | |
1473 | } | |
62b28dd9 | 1474 | do_execfree(); /* free any memory malloced by child on vfork */ |
a687059c | 1475 | close(p[that]); |
62b28dd9 LW |
1476 | if (p[that] < p[this]) { |
1477 | dup2(p[this], p[that]); | |
1478 | close(p[this]); | |
1479 | p[this] = p[that]; | |
1480 | } | |
20188a90 LW |
1481 | str = afetch(fdpid,p[this],TRUE); |
1482 | str->str_u.str_useful = pid; | |
a687059c LW |
1483 | forkprocess = pid; |
1484 | return fdopen(p[this], mode); | |
1485 | } | |
7c0587c8 LW |
1486 | #else |
1487 | #ifdef atarist | |
1488 | FILE *popen(); | |
1489 | FILE * | |
1490 | mypopen(cmd,mode) | |
1491 | char *cmd; | |
1492 | char *mode; | |
1493 | { | |
1494 | return popen(cmd, mode); | |
1495 | } | |
1496 | #endif | |
1497 | ||
1498 | #endif /* !DOSISH */ | |
a687059c | 1499 | |
ae986130 LW |
1500 | #ifdef NOTDEF |
1501 | dumpfds(s) | |
1502 | char *s; | |
1503 | { | |
1504 | int fd; | |
1505 | struct stat tmpstatbuf; | |
1506 | ||
1507 | fprintf(stderr,"%s", s); | |
1508 | for (fd = 0; fd < 32; fd++) { | |
1509 | if (fstat(fd,&tmpstatbuf) >= 0) | |
1510 | fprintf(stderr," %d",fd); | |
1511 | } | |
1512 | fprintf(stderr,"\n"); | |
1513 | } | |
1514 | #endif | |
1515 | ||
fe14fcc3 | 1516 | #ifndef HAS_DUP2 |
a687059c LW |
1517 | dup2(oldfd,newfd) |
1518 | int oldfd; | |
1519 | int newfd; | |
1520 | { | |
fe14fcc3 | 1521 | #if defined(HAS_FCNTL) && defined(F_DUPFD) |
62b28dd9 LW |
1522 | close(newfd); |
1523 | fcntl(oldfd, F_DUPFD, newfd); | |
1524 | #else | |
d48672a2 | 1525 | int fdtmp[256]; |
ae986130 LW |
1526 | int fdx = 0; |
1527 | int fd; | |
1528 | ||
fe14fcc3 LW |
1529 | if (oldfd == newfd) |
1530 | return 0; | |
a687059c | 1531 | close(newfd); |
ae986130 LW |
1532 | while ((fd = dup(oldfd)) != newfd) /* good enough for low fd's */ |
1533 | fdtmp[fdx++] = fd; | |
1534 | while (fdx > 0) | |
1535 | close(fdtmp[--fdx]); | |
62b28dd9 | 1536 | #endif |
a687059c LW |
1537 | } |
1538 | #endif | |
1539 | ||
7c0587c8 | 1540 | #ifndef DOSISH |
a687059c LW |
1541 | int |
1542 | mypclose(ptr) | |
1543 | FILE *ptr; | |
1544 | { | |
a687059c LW |
1545 | #ifdef VOIDSIG |
1546 | void (*hstat)(), (*istat)(), (*qstat)(); | |
1547 | #else | |
1548 | int (*hstat)(), (*istat)(), (*qstat)(); | |
1549 | #endif | |
1550 | int status; | |
1551 | STR *str; | |
20188a90 | 1552 | int pid; |
a687059c | 1553 | |
20188a90 | 1554 | str = afetch(fdpid,fileno(ptr),TRUE); |
de3bb511 | 1555 | pid = (int)str->str_u.str_useful; |
20188a90 | 1556 | astore(fdpid,fileno(ptr),Nullstr); |
a687059c | 1557 | fclose(ptr); |
7c0587c8 LW |
1558 | #ifdef UTS |
1559 | if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */ | |
1560 | #endif | |
a687059c LW |
1561 | hstat = signal(SIGHUP, SIG_IGN); |
1562 | istat = signal(SIGINT, SIG_IGN); | |
1563 | qstat = signal(SIGQUIT, SIG_IGN); | |
20188a90 LW |
1564 | pid = wait4pid(pid, &status, 0); |
1565 | signal(SIGHUP, hstat); | |
1566 | signal(SIGINT, istat); | |
1567 | signal(SIGQUIT, qstat); | |
1568 | return(pid < 0 ? pid : status); | |
1569 | } | |
1570 | ||
1571 | int | |
1572 | wait4pid(pid,statusp,flags) | |
1573 | int pid; | |
1574 | int *statusp; | |
1575 | int flags; | |
1576 | { | |
de3bb511 | 1577 | #if !defined(HAS_WAIT4) && !defined(HAS_WAITPID) |
20188a90 LW |
1578 | int result; |
1579 | STR *str; | |
1580 | char spid[16]; | |
de3bb511 | 1581 | #endif |
20188a90 LW |
1582 | |
1583 | if (!pid) | |
1584 | return -1; | |
fe14fcc3 LW |
1585 | #ifdef HAS_WAIT4 |
1586 | return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *)); | |
a687059c | 1587 | #else |
fe14fcc3 | 1588 | #ifdef HAS_WAITPID |
20188a90 LW |
1589 | return waitpid(pid,statusp,flags); |
1590 | #else | |
1591 | if (pid > 0) { | |
1592 | sprintf(spid, "%d", pid); | |
e5d73d77 | 1593 | str = hfetch(pidstatus,spid,strlen(spid),FALSE); |
20188a90 LW |
1594 | if (str != &str_undef) { |
1595 | *statusp = (int)str->str_u.str_useful; | |
e5d73d77 | 1596 | hdelete(pidstatus,spid,strlen(spid)); |
20188a90 LW |
1597 | return pid; |
1598 | } | |
1599 | } | |
1600 | else { | |
1601 | HENT *entry; | |
1602 | ||
1603 | hiterinit(pidstatus); | |
1604 | if (entry = hiternext(pidstatus)) { | |
1605 | pid = atoi(hiterkey(entry,statusp)); | |
7c0587c8 | 1606 | str = hiterval(pidstatus,entry); |
20188a90 LW |
1607 | *statusp = (int)str->str_u.str_useful; |
1608 | sprintf(spid, "%d", pid); | |
e5d73d77 | 1609 | hdelete(pidstatus,spid,strlen(spid)); |
20188a90 LW |
1610 | return pid; |
1611 | } | |
1612 | } | |
1613 | if (flags) | |
1614 | fatal("Can't do waitpid with flags"); | |
a687059c | 1615 | else { |
20188a90 LW |
1616 | while ((result = wait(statusp)) != pid && pid > 0 && result >= 0) |
1617 | pidgone(result,*statusp); | |
a687059c | 1618 | if (result < 0) |
20188a90 | 1619 | *statusp = -1; |
a687059c | 1620 | } |
e5d73d77 | 1621 | return result; |
a687059c | 1622 | #endif |
20188a90 | 1623 | #endif |
a687059c | 1624 | } |
7c0587c8 | 1625 | #endif /* !DOSISH */ |
a687059c | 1626 | |
7c0587c8 | 1627 | void |
de3bb511 | 1628 | /*SUPPRESS 590*/ |
a687059c LW |
1629 | pidgone(pid,status) |
1630 | int pid; | |
1631 | int status; | |
1632 | { | |
fe14fcc3 | 1633 | #if defined(HAS_WAIT4) || defined(HAS_WAITPID) |
a687059c | 1634 | #else |
a687059c | 1635 | register STR *str; |
20188a90 | 1636 | char spid[16]; |
a687059c | 1637 | |
20188a90 | 1638 | sprintf(spid, "%d", pid); |
e5d73d77 | 1639 | str = hfetch(pidstatus,spid,strlen(spid),TRUE); |
20188a90 | 1640 | str->str_u.str_useful = status; |
a687059c | 1641 | #endif |
20188a90 | 1642 | return; |
a687059c LW |
1643 | } |
1644 | ||
7c0587c8 LW |
1645 | #ifdef atarist |
1646 | int pclose(); | |
1647 | int | |
1648 | mypclose(ptr) | |
1649 | FILE *ptr; | |
a687059c | 1650 | { |
7c0587c8 | 1651 | return pclose(ptr); |
a687059c | 1652 | } |
7c0587c8 | 1653 | #endif |
9f68db38 LW |
1654 | |
1655 | void | |
1656 | repeatcpy(to,from,len,count) | |
1657 | register char *to; | |
1658 | register char *from; | |
1659 | int len; | |
1660 | register int count; | |
1661 | { | |
1662 | register int todo; | |
1663 | register char *frombase = from; | |
1664 | ||
1665 | if (len == 1) { | |
1666 | todo = *from; | |
1667 | while (count-- > 0) | |
1668 | *to++ = todo; | |
1669 | return; | |
1670 | } | |
1671 | while (count-- > 0) { | |
1672 | for (todo = len; todo > 0; todo--) { | |
1673 | *to++ = *from++; | |
1674 | } | |
1675 | from = frombase; | |
1676 | } | |
1677 | } | |
0f85fab0 LW |
1678 | |
1679 | #ifndef CASTNEGFLOAT | |
1680 | unsigned long | |
1681 | castulong(f) | |
1682 | double f; | |
1683 | { | |
1684 | long along; | |
1685 | ||
27e2fb84 | 1686 | #if CASTFLAGS & 2 |
34de22dd LW |
1687 | # define BIGDOUBLE 2147483648.0 |
1688 | if (f >= BIGDOUBLE) | |
1689 | return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000; | |
1690 | #endif | |
0f85fab0 LW |
1691 | if (f >= 0.0) |
1692 | return (unsigned long)f; | |
1693 | along = (long)f; | |
1694 | return (unsigned long)along; | |
1695 | } | |
1696 | #endif | |
62b28dd9 | 1697 | |
fe14fcc3 | 1698 | #ifndef HAS_RENAME |
62b28dd9 LW |
1699 | int |
1700 | same_dirent(a,b) | |
1701 | char *a; | |
1702 | char *b; | |
1703 | { | |
1704 | char *fa = rindex(a,'/'); | |
1705 | char *fb = rindex(b,'/'); | |
1706 | struct stat tmpstatbuf1; | |
1707 | struct stat tmpstatbuf2; | |
1708 | #ifndef MAXPATHLEN | |
1709 | #define MAXPATHLEN 1024 | |
1710 | #endif | |
1711 | char tmpbuf[MAXPATHLEN+1]; | |
1712 | ||
1713 | if (fa) | |
1714 | fa++; | |
1715 | else | |
1716 | fa = a; | |
1717 | if (fb) | |
1718 | fb++; | |
1719 | else | |
1720 | fb = b; | |
1721 | if (strNE(a,b)) | |
1722 | return FALSE; | |
1723 | if (fa == a) | |
6eb13c3b | 1724 | strcpy(tmpbuf,"."); |
62b28dd9 LW |
1725 | else |
1726 | strncpy(tmpbuf, a, fa - a); | |
1727 | if (stat(tmpbuf, &tmpstatbuf1) < 0) | |
1728 | return FALSE; | |
1729 | if (fb == b) | |
6eb13c3b | 1730 | strcpy(tmpbuf,"."); |
62b28dd9 LW |
1731 | else |
1732 | strncpy(tmpbuf, b, fb - b); | |
1733 | if (stat(tmpbuf, &tmpstatbuf2) < 0) | |
1734 | return FALSE; | |
1735 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && | |
1736 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; | |
1737 | } | |
fe14fcc3 LW |
1738 | #endif /* !HAS_RENAME */ |
1739 | ||
1740 | unsigned long | |
1741 | scanoct(start, len, retlen) | |
1742 | char *start; | |
1743 | int len; | |
1744 | int *retlen; | |
1745 | { | |
1746 | register char *s = start; | |
1747 | register unsigned long retval = 0; | |
1748 | ||
1749 | while (len-- && *s >= '0' && *s <= '7') { | |
1750 | retval <<= 3; | |
1751 | retval |= *s++ - '0'; | |
1752 | } | |
1753 | *retlen = s - start; | |
1754 | return retval; | |
1755 | } | |
1756 | ||
1757 | unsigned long | |
1758 | scanhex(start, len, retlen) | |
1759 | char *start; | |
1760 | int len; | |
1761 | int *retlen; | |
1762 | { | |
1763 | register char *s = start; | |
1764 | register unsigned long retval = 0; | |
1765 | char *tmp; | |
1766 | ||
1767 | while (len-- && *s && (tmp = index(hexdigit, *s))) { | |
1768 | retval <<= 4; | |
1769 | retval |= (tmp - hexdigit) & 15; | |
1770 | s++; | |
1771 | } | |
1772 | *retlen = s - start; | |
1773 | return retval; | |
1774 | } |