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fe14fcc3 | 1 | /* $Header: util.c,v 4.0 91/03/20 01:56:39 lwall Locked $ |
a687059c LW |
2 | * |
3 | * Copyright (c) 1989, Larry Wall | |
4 | * | |
5 | * You may distribute under the terms of the GNU General Public License | |
6 | * as specified in the README file that comes with the perl 3.0 kit. | |
8d063cd8 LW |
7 | * |
8 | * $Log: util.c,v $ | |
fe14fcc3 LW |
9 | * Revision 4.0 91/03/20 01:56:39 lwall |
10 | * 4.0 baseline. | |
8d063cd8 LW |
11 | * |
12 | */ | |
13 | ||
8d063cd8 | 14 | #include "EXTERN.h" |
8d063cd8 | 15 | #include "perl.h" |
62b28dd9 | 16 | |
6eb13c3b | 17 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
a687059c | 18 | #include <signal.h> |
62b28dd9 | 19 | #endif |
a687059c LW |
20 | |
21 | #ifdef I_VFORK | |
22 | # include <vfork.h> | |
23 | #endif | |
24 | ||
25 | #ifdef I_VARARGS | |
26 | # include <varargs.h> | |
27 | #endif | |
8d063cd8 | 28 | |
fe14fcc3 LW |
29 | #ifdef I_FCNTL |
30 | # include <fcntl.h> | |
31 | #endif | |
32 | #ifdef I_SYS_FILE | |
33 | # include <sys/file.h> | |
34 | #endif | |
35 | ||
8d063cd8 | 36 | #define FLUSH |
8d063cd8 LW |
37 | |
38 | static char nomem[] = "Out of memory!\n"; | |
39 | ||
40 | /* paranoid version of malloc */ | |
41 | ||
378cc40b | 42 | #ifdef DEBUGGING |
8d063cd8 | 43 | static int an = 0; |
378cc40b | 44 | #endif |
8d063cd8 | 45 | |
a687059c LW |
46 | /* NOTE: Do not call the next three routines directly. Use the macros |
47 | * in handy.h, so that we can easily redefine everything to do tracking of | |
48 | * allocated hunks back to the original New to track down any memory leaks. | |
49 | */ | |
50 | ||
8d063cd8 LW |
51 | char * |
52 | safemalloc(size) | |
62b28dd9 LW |
53 | #ifdef MSDOS |
54 | unsigned long size; | |
55 | #else | |
8d063cd8 | 56 | MEM_SIZE size; |
62b28dd9 | 57 | #endif /* MSDOS */ |
8d063cd8 LW |
58 | { |
59 | char *ptr; | |
fe14fcc3 | 60 | #ifndef __STDC__ |
8d063cd8 | 61 | char *malloc(); |
fe14fcc3 | 62 | #endif /* ! __STDC__ */ |
8d063cd8 | 63 | |
62b28dd9 LW |
64 | #ifdef MSDOS |
65 | if (size > 0xffff) { | |
66 | fprintf(stderr, "Allocation too large: %lx\n", size) FLUSH; | |
67 | exit(1); | |
68 | } | |
69 | #endif /* MSDOS */ | |
34de22dd LW |
70 | #ifdef DEBUGGING |
71 | if ((long)size < 0) | |
72 | fatal("panic: malloc"); | |
73 | #endif | |
8d063cd8 LW |
74 | ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
75 | #ifdef DEBUGGING | |
a687059c | 76 | # ifndef I286 |
8d063cd8 LW |
77 | if (debug & 128) |
78 | fprintf(stderr,"0x%x: (%05d) malloc %d bytes\n",ptr,an++,size); | |
a687059c LW |
79 | # else |
80 | if (debug & 128) | |
81 | fprintf(stderr,"0x%lx: (%05d) malloc %d bytes\n",ptr,an++,size); | |
82 | # endif | |
8d063cd8 LW |
83 | #endif |
84 | if (ptr != Nullch) | |
85 | return ptr; | |
86 | else { | |
34de22dd | 87 | fputs(nomem,stderr) FLUSH; |
8d063cd8 LW |
88 | exit(1); |
89 | } | |
90 | /*NOTREACHED*/ | |
a687059c LW |
91 | #ifdef lint |
92 | return ptr; | |
93 | #endif | |
8d063cd8 LW |
94 | } |
95 | ||
96 | /* paranoid version of realloc */ | |
97 | ||
98 | char * | |
99 | saferealloc(where,size) | |
100 | char *where; | |
62b28dd9 | 101 | #ifndef MSDOS |
8d063cd8 | 102 | MEM_SIZE size; |
62b28dd9 LW |
103 | #else |
104 | unsigned long size; | |
105 | #endif /* MSDOS */ | |
8d063cd8 LW |
106 | { |
107 | char *ptr; | |
fe14fcc3 | 108 | #ifndef __STDC__ |
8d063cd8 | 109 | char *realloc(); |
fe14fcc3 | 110 | #endif /* ! __STDC__ */ |
8d063cd8 | 111 | |
62b28dd9 LW |
112 | #ifdef MSDOS |
113 | if (size > 0xffff) { | |
114 | fprintf(stderr, "Reallocation too large: %lx\n", size) FLUSH; | |
115 | exit(1); | |
116 | } | |
117 | #endif /* MSDOS */ | |
378cc40b LW |
118 | if (!where) |
119 | fatal("Null realloc"); | |
34de22dd LW |
120 | #ifdef DEBUGGING |
121 | if ((long)size < 0) | |
122 | fatal("panic: realloc"); | |
123 | #endif | |
8d063cd8 LW |
124 | ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */ |
125 | #ifdef DEBUGGING | |
a687059c | 126 | # ifndef I286 |
8d063cd8 LW |
127 | if (debug & 128) { |
128 | fprintf(stderr,"0x%x: (%05d) rfree\n",where,an++); | |
129 | fprintf(stderr,"0x%x: (%05d) realloc %d bytes\n",ptr,an++,size); | |
130 | } | |
a687059c LW |
131 | # else |
132 | if (debug & 128) { | |
133 | fprintf(stderr,"0x%lx: (%05d) rfree\n",where,an++); | |
134 | fprintf(stderr,"0x%lx: (%05d) realloc %d bytes\n",ptr,an++,size); | |
135 | } | |
136 | # endif | |
8d063cd8 LW |
137 | #endif |
138 | if (ptr != Nullch) | |
139 | return ptr; | |
140 | else { | |
34de22dd | 141 | fputs(nomem,stderr) FLUSH; |
8d063cd8 LW |
142 | exit(1); |
143 | } | |
144 | /*NOTREACHED*/ | |
a687059c LW |
145 | #ifdef lint |
146 | return ptr; | |
147 | #endif | |
8d063cd8 LW |
148 | } |
149 | ||
150 | /* safe version of free */ | |
151 | ||
a687059c | 152 | void |
8d063cd8 LW |
153 | safefree(where) |
154 | char *where; | |
155 | { | |
156 | #ifdef DEBUGGING | |
a687059c | 157 | # ifndef I286 |
8d063cd8 LW |
158 | if (debug & 128) |
159 | fprintf(stderr,"0x%x: (%05d) free\n",where,an++); | |
a687059c LW |
160 | # else |
161 | if (debug & 128) | |
162 | fprintf(stderr,"0x%lx: (%05d) free\n",where,an++); | |
163 | # endif | |
8d063cd8 | 164 | #endif |
378cc40b LW |
165 | if (where) { |
166 | free(where); | |
167 | } | |
8d063cd8 LW |
168 | } |
169 | ||
a687059c LW |
170 | #ifdef LEAKTEST |
171 | ||
172 | #define ALIGN sizeof(long) | |
8d063cd8 LW |
173 | |
174 | char * | |
a687059c LW |
175 | safexmalloc(x,size) |
176 | int x; | |
177 | MEM_SIZE size; | |
8d063cd8 | 178 | { |
a687059c | 179 | register char *where; |
8d063cd8 | 180 | |
a687059c LW |
181 | where = safemalloc(size + ALIGN); |
182 | xcount[x]++; | |
183 | where[0] = x % 100; | |
184 | where[1] = x / 100; | |
185 | return where + ALIGN; | |
8d063cd8 | 186 | } |
8d063cd8 LW |
187 | |
188 | char * | |
a687059c LW |
189 | safexrealloc(where,size) |
190 | char *where; | |
191 | MEM_SIZE size; | |
192 | { | |
193 | return saferealloc(where - ALIGN, size + ALIGN) + ALIGN; | |
194 | } | |
195 | ||
196 | void | |
197 | safexfree(where) | |
198 | char *where; | |
199 | { | |
200 | int x; | |
201 | ||
202 | if (!where) | |
203 | return; | |
204 | where -= ALIGN; | |
205 | x = where[0] + 100 * where[1]; | |
206 | xcount[x]--; | |
207 | safefree(where); | |
208 | } | |
209 | ||
210 | xstat() | |
8d063cd8 | 211 | { |
a687059c | 212 | register int i; |
8d063cd8 | 213 | |
a687059c LW |
214 | for (i = 0; i < MAXXCOUNT; i++) { |
215 | if (xcount[i] != lastxcount[i]) { | |
216 | fprintf(stderr,"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]); | |
217 | lastxcount[i] = xcount[i]; | |
8d063cd8 LW |
218 | } |
219 | } | |
8d063cd8 | 220 | } |
a687059c LW |
221 | |
222 | #endif /* LEAKTEST */ | |
8d063cd8 LW |
223 | |
224 | /* copy a string up to some (non-backslashed) delimiter, if any */ | |
225 | ||
226 | char * | |
a687059c | 227 | cpytill(to,from,fromend,delim,retlen) |
62b28dd9 LW |
228 | register char *to; |
229 | register char *from; | |
a687059c | 230 | register char *fromend; |
8d063cd8 | 231 | register int delim; |
a687059c | 232 | int *retlen; |
8d063cd8 | 233 | { |
a687059c LW |
234 | char *origto = to; |
235 | ||
236 | for (; from < fromend; from++,to++) { | |
378cc40b LW |
237 | if (*from == '\\') { |
238 | if (from[1] == delim) | |
239 | from++; | |
240 | else if (from[1] == '\\') | |
241 | *to++ = *from++; | |
242 | } | |
8d063cd8 LW |
243 | else if (*from == delim) |
244 | break; | |
245 | *to = *from; | |
246 | } | |
247 | *to = '\0'; | |
a687059c | 248 | *retlen = to - origto; |
8d063cd8 LW |
249 | return from; |
250 | } | |
251 | ||
252 | /* return ptr to little string in big string, NULL if not found */ | |
378cc40b | 253 | /* This routine was donated by Corey Satten. */ |
8d063cd8 LW |
254 | |
255 | char * | |
256 | instr(big, little) | |
378cc40b LW |
257 | register char *big; |
258 | register char *little; | |
259 | { | |
260 | register char *s, *x; | |
a687059c | 261 | register int first; |
378cc40b | 262 | |
a687059c LW |
263 | if (!little) |
264 | return big; | |
265 | first = *little++; | |
378cc40b LW |
266 | if (!first) |
267 | return big; | |
268 | while (*big) { | |
269 | if (*big++ != first) | |
270 | continue; | |
271 | for (x=big,s=little; *s; /**/ ) { | |
272 | if (!*x) | |
273 | return Nullch; | |
274 | if (*s++ != *x++) { | |
275 | s--; | |
276 | break; | |
277 | } | |
278 | } | |
279 | if (!*s) | |
280 | return big-1; | |
281 | } | |
282 | return Nullch; | |
283 | } | |
8d063cd8 | 284 | |
a687059c LW |
285 | /* same as instr but allow embedded nulls */ |
286 | ||
287 | char * | |
288 | ninstr(big, bigend, little, lend) | |
289 | register char *big; | |
290 | register char *bigend; | |
291 | char *little; | |
292 | char *lend; | |
8d063cd8 | 293 | { |
a687059c LW |
294 | register char *s, *x; |
295 | register int first = *little; | |
296 | register char *littleend = lend; | |
378cc40b | 297 | |
a687059c LW |
298 | if (!first && little > littleend) |
299 | return big; | |
300 | bigend -= littleend - little++; | |
301 | while (big <= bigend) { | |
302 | if (*big++ != first) | |
303 | continue; | |
304 | for (x=big,s=little; s < littleend; /**/ ) { | |
305 | if (*s++ != *x++) { | |
306 | s--; | |
307 | break; | |
308 | } | |
309 | } | |
310 | if (s >= littleend) | |
311 | return big-1; | |
378cc40b | 312 | } |
a687059c LW |
313 | return Nullch; |
314 | } | |
315 | ||
316 | /* reverse of the above--find last substring */ | |
317 | ||
318 | char * | |
319 | rninstr(big, bigend, little, lend) | |
320 | register char *big; | |
321 | char *bigend; | |
322 | char *little; | |
323 | char *lend; | |
324 | { | |
325 | register char *bigbeg; | |
326 | register char *s, *x; | |
327 | register int first = *little; | |
328 | register char *littleend = lend; | |
329 | ||
330 | if (!first && little > littleend) | |
331 | return bigend; | |
332 | bigbeg = big; | |
333 | big = bigend - (littleend - little++); | |
334 | while (big >= bigbeg) { | |
335 | if (*big-- != first) | |
336 | continue; | |
337 | for (x=big+2,s=little; s < littleend; /**/ ) { | |
338 | if (*s++ != *x++) { | |
339 | s--; | |
340 | break; | |
341 | } | |
342 | } | |
343 | if (s >= littleend) | |
344 | return big+1; | |
378cc40b | 345 | } |
a687059c | 346 | return Nullch; |
378cc40b | 347 | } |
a687059c LW |
348 | |
349 | unsigned char fold[] = { | |
350 | 0, 1, 2, 3, 4, 5, 6, 7, | |
351 | 8, 9, 10, 11, 12, 13, 14, 15, | |
352 | 16, 17, 18, 19, 20, 21, 22, 23, | |
353 | 24, 25, 26, 27, 28, 29, 30, 31, | |
354 | 32, 33, 34, 35, 36, 37, 38, 39, | |
355 | 40, 41, 42, 43, 44, 45, 46, 47, | |
356 | 48, 49, 50, 51, 52, 53, 54, 55, | |
357 | 56, 57, 58, 59, 60, 61, 62, 63, | |
358 | 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', | |
359 | 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', | |
360 | 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', | |
361 | 'x', 'y', 'z', 91, 92, 93, 94, 95, | |
362 | 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G', | |
363 | 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', | |
364 | 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', | |
365 | 'X', 'Y', 'Z', 123, 124, 125, 126, 127, | |
366 | 128, 129, 130, 131, 132, 133, 134, 135, | |
367 | 136, 137, 138, 139, 140, 141, 142, 143, | |
368 | 144, 145, 146, 147, 148, 149, 150, 151, | |
369 | 152, 153, 154, 155, 156, 157, 158, 159, | |
370 | 160, 161, 162, 163, 164, 165, 166, 167, | |
371 | 168, 169, 170, 171, 172, 173, 174, 175, | |
372 | 176, 177, 178, 179, 180, 181, 182, 183, | |
373 | 184, 185, 186, 187, 188, 189, 190, 191, | |
374 | 192, 193, 194, 195, 196, 197, 198, 199, | |
375 | 200, 201, 202, 203, 204, 205, 206, 207, | |
376 | 208, 209, 210, 211, 212, 213, 214, 215, | |
377 | 216, 217, 218, 219, 220, 221, 222, 223, | |
378 | 224, 225, 226, 227, 228, 229, 230, 231, | |
379 | 232, 233, 234, 235, 236, 237, 238, 239, | |
380 | 240, 241, 242, 243, 244, 245, 246, 247, | |
381 | 248, 249, 250, 251, 252, 253, 254, 255 | |
382 | }; | |
378cc40b LW |
383 | |
384 | static unsigned char freq[] = { | |
385 | 1, 2, 84, 151, 154, 155, 156, 157, | |
386 | 165, 246, 250, 3, 158, 7, 18, 29, | |
387 | 40, 51, 62, 73, 85, 96, 107, 118, | |
388 | 129, 140, 147, 148, 149, 150, 152, 153, | |
389 | 255, 182, 224, 205, 174, 176, 180, 217, | |
390 | 233, 232, 236, 187, 235, 228, 234, 226, | |
391 | 222, 219, 211, 195, 188, 193, 185, 184, | |
392 | 191, 183, 201, 229, 181, 220, 194, 162, | |
393 | 163, 208, 186, 202, 200, 218, 198, 179, | |
394 | 178, 214, 166, 170, 207, 199, 209, 206, | |
395 | 204, 160, 212, 216, 215, 192, 175, 173, | |
396 | 243, 172, 161, 190, 203, 189, 164, 230, | |
397 | 167, 248, 227, 244, 242, 255, 241, 231, | |
398 | 240, 253, 169, 210, 245, 237, 249, 247, | |
399 | 239, 168, 252, 251, 254, 238, 223, 221, | |
400 | 213, 225, 177, 197, 171, 196, 159, 4, | |
401 | 5, 6, 8, 9, 10, 11, 12, 13, | |
402 | 14, 15, 16, 17, 19, 20, 21, 22, | |
403 | 23, 24, 25, 26, 27, 28, 30, 31, | |
404 | 32, 33, 34, 35, 36, 37, 38, 39, | |
405 | 41, 42, 43, 44, 45, 46, 47, 48, | |
406 | 49, 50, 52, 53, 54, 55, 56, 57, | |
407 | 58, 59, 60, 61, 63, 64, 65, 66, | |
408 | 67, 68, 69, 70, 71, 72, 74, 75, | |
409 | 76, 77, 78, 79, 80, 81, 82, 83, | |
410 | 86, 87, 88, 89, 90, 91, 92, 93, | |
411 | 94, 95, 97, 98, 99, 100, 101, 102, | |
412 | 103, 104, 105, 106, 108, 109, 110, 111, | |
413 | 112, 113, 114, 115, 116, 117, 119, 120, | |
414 | 121, 122, 123, 124, 125, 126, 127, 128, | |
415 | 130, 131, 132, 133, 134, 135, 136, 137, | |
416 | 138, 139, 141, 142, 143, 144, 145, 146 | |
417 | }; | |
8d063cd8 | 418 | |
378cc40b | 419 | void |
a687059c | 420 | fbmcompile(str, iflag) |
378cc40b | 421 | STR *str; |
a687059c | 422 | int iflag; |
378cc40b | 423 | { |
a687059c LW |
424 | register unsigned char *s; |
425 | register unsigned char *table; | |
378cc40b LW |
426 | register int i; |
427 | register int len = str->str_cur; | |
428 | int rarest = 0; | |
20188a90 | 429 | unsigned int frequency = 256; |
378cc40b | 430 | |
62b28dd9 | 431 | Str_Grow(str,len+258); |
a687059c LW |
432 | #ifndef lint |
433 | table = (unsigned char*)(str->str_ptr + len + 1); | |
434 | #else | |
435 | table = Null(unsigned char*); | |
436 | #endif | |
437 | s = table - 2; | |
438 | for (i = 0; i < 256; i++) { | |
378cc40b LW |
439 | table[i] = len; |
440 | } | |
441 | i = 0; | |
a687059c LW |
442 | #ifndef lint |
443 | while (s >= (unsigned char*)(str->str_ptr)) | |
444 | #endif | |
445 | { | |
446 | if (table[*s] == len) { | |
447 | #ifndef pdp11 | |
448 | if (iflag) | |
449 | table[*s] = table[fold[*s]] = i; | |
450 | #else | |
451 | if (iflag) { | |
452 | int j; | |
453 | j = fold[*s]; | |
454 | table[j] = i; | |
455 | table[*s] = i; | |
456 | } | |
457 | #endif /* pdp11 */ | |
458 | else | |
459 | table[*s] = i; | |
460 | } | |
378cc40b LW |
461 | s--,i++; |
462 | } | |
a687059c | 463 | str->str_pok |= SP_FBM; /* deep magic */ |
378cc40b | 464 | |
a687059c LW |
465 | #ifndef lint |
466 | s = (unsigned char*)(str->str_ptr); /* deeper magic */ | |
467 | #else | |
468 | s = Null(unsigned char*); | |
469 | #endif | |
470 | if (iflag) { | |
20188a90 | 471 | register unsigned int tmp, foldtmp; |
a687059c LW |
472 | str->str_pok |= SP_CASEFOLD; |
473 | for (i = 0; i < len; i++) { | |
474 | tmp=freq[s[i]]; | |
475 | foldtmp=freq[fold[s[i]]]; | |
476 | if (tmp < frequency && foldtmp < frequency) { | |
477 | rarest = i; | |
478 | /* choose most frequent among the two */ | |
479 | frequency = (tmp > foldtmp) ? tmp : foldtmp; | |
480 | } | |
481 | } | |
482 | } | |
483 | else { | |
484 | for (i = 0; i < len; i++) { | |
485 | if (freq[s[i]] < frequency) { | |
486 | rarest = i; | |
487 | frequency = freq[s[i]]; | |
488 | } | |
378cc40b LW |
489 | } |
490 | } | |
491 | str->str_rare = s[rarest]; | |
a687059c | 492 | str->str_state = rarest; |
378cc40b LW |
493 | #ifdef DEBUGGING |
494 | if (debug & 512) | |
a687059c | 495 | fprintf(stderr,"rarest char %c at %d\n",str->str_rare, str->str_state); |
378cc40b LW |
496 | #endif |
497 | } | |
498 | ||
378cc40b LW |
499 | char * |
500 | fbminstr(big, bigend, littlestr) | |
a687059c LW |
501 | unsigned char *big; |
502 | register unsigned char *bigend; | |
378cc40b LW |
503 | STR *littlestr; |
504 | { | |
a687059c | 505 | register unsigned char *s; |
378cc40b LW |
506 | register int tmp; |
507 | register int littlelen; | |
a687059c LW |
508 | register unsigned char *little; |
509 | register unsigned char *table; | |
510 | register unsigned char *olds; | |
511 | register unsigned char *oldlittle; | |
378cc40b | 512 | |
a687059c LW |
513 | #ifndef lint |
514 | if (!(littlestr->str_pok & SP_FBM)) | |
9f68db38 LW |
515 | return ninstr((char*)big,(char*)bigend, |
516 | littlestr->str_ptr, littlestr->str_ptr + littlestr->str_cur); | |
a687059c | 517 | #endif |
378cc40b LW |
518 | |
519 | littlelen = littlestr->str_cur; | |
a687059c LW |
520 | #ifndef lint |
521 | if (littlestr->str_pok & SP_TAIL && !multiline) { /* tail anchored? */ | |
0f85fab0 LW |
522 | if (littlelen > bigend - big) |
523 | return Nullch; | |
a687059c LW |
524 | little = (unsigned char*)littlestr->str_ptr; |
525 | if (littlestr->str_pok & SP_CASEFOLD) { /* oops, fake it */ | |
526 | big = bigend - littlelen; /* just start near end */ | |
527 | if (bigend[-1] == '\n' && little[littlelen-1] != '\n') | |
528 | big--; | |
378cc40b LW |
529 | } |
530 | else { | |
a687059c LW |
531 | s = bigend - littlelen; |
532 | if (*s == *little && bcmp(s,little,littlelen)==0) | |
533 | return (char*)s; /* how sweet it is */ | |
34de22dd LW |
534 | else if (bigend[-1] == '\n' && little[littlelen-1] != '\n' |
535 | && s > big) { | |
a687059c LW |
536 | s--; |
537 | if (*s == *little && bcmp(s,little,littlelen)==0) | |
538 | return (char*)s; | |
539 | } | |
540 | return Nullch; | |
541 | } | |
542 | } | |
543 | table = (unsigned char*)(littlestr->str_ptr + littlelen + 1); | |
544 | #else | |
545 | table = Null(unsigned char*); | |
546 | #endif | |
62b28dd9 LW |
547 | if (--littlelen >= bigend - big) |
548 | return Nullch; | |
549 | s = big + littlelen; | |
a687059c LW |
550 | oldlittle = little = table - 2; |
551 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insensitive? */ | |
20188a90 | 552 | if (s < bigend) { |
a687059c LW |
553 | top1: |
554 | if (tmp = table[*s]) { | |
62b28dd9 LW |
555 | #ifdef POINTERRIGOR |
556 | if (bigend - s > tmp) { | |
557 | s += tmp; | |
558 | goto top1; | |
559 | } | |
560 | #else | |
561 | if ((s += tmp) < bigend) | |
562 | goto top1; | |
563 | #endif | |
564 | return Nullch; | |
a687059c LW |
565 | } |
566 | else { | |
567 | tmp = littlelen; /* less expensive than calling strncmp() */ | |
568 | olds = s; | |
569 | while (tmp--) { | |
570 | if (*--s == *--little || fold[*s] == *little) | |
571 | continue; | |
572 | s = olds + 1; /* here we pay the price for failure */ | |
573 | little = oldlittle; | |
574 | if (s < bigend) /* fake up continue to outer loop */ | |
575 | goto top1; | |
576 | return Nullch; | |
577 | } | |
578 | #ifndef lint | |
579 | return (char *)s; | |
580 | #endif | |
581 | } | |
582 | } | |
583 | } | |
584 | else { | |
20188a90 | 585 | if (s < bigend) { |
a687059c LW |
586 | top2: |
587 | if (tmp = table[*s]) { | |
62b28dd9 LW |
588 | #ifdef POINTERRIGOR |
589 | if (bigend - s > tmp) { | |
590 | s += tmp; | |
591 | goto top2; | |
592 | } | |
593 | #else | |
594 | if ((s += tmp) < bigend) | |
595 | goto top2; | |
596 | #endif | |
597 | return Nullch; | |
a687059c LW |
598 | } |
599 | else { | |
600 | tmp = littlelen; /* less expensive than calling strncmp() */ | |
601 | olds = s; | |
602 | while (tmp--) { | |
603 | if (*--s == *--little) | |
604 | continue; | |
605 | s = olds + 1; /* here we pay the price for failure */ | |
606 | little = oldlittle; | |
607 | if (s < bigend) /* fake up continue to outer loop */ | |
608 | goto top2; | |
609 | return Nullch; | |
610 | } | |
611 | #ifndef lint | |
612 | return (char *)s; | |
613 | #endif | |
378cc40b | 614 | } |
378cc40b LW |
615 | } |
616 | } | |
617 | return Nullch; | |
618 | } | |
619 | ||
620 | char * | |
621 | screaminstr(bigstr, littlestr) | |
622 | STR *bigstr; | |
623 | STR *littlestr; | |
624 | { | |
a687059c LW |
625 | register unsigned char *s, *x; |
626 | register unsigned char *big; | |
378cc40b LW |
627 | register int pos; |
628 | register int previous; | |
629 | register int first; | |
a687059c LW |
630 | register unsigned char *little; |
631 | register unsigned char *bigend; | |
632 | register unsigned char *littleend; | |
378cc40b LW |
633 | |
634 | if ((pos = screamfirst[littlestr->str_rare]) < 0) | |
635 | return Nullch; | |
a687059c LW |
636 | #ifndef lint |
637 | little = (unsigned char *)(littlestr->str_ptr); | |
638 | #else | |
639 | little = Null(unsigned char *); | |
640 | #endif | |
641 | littleend = little + littlestr->str_cur; | |
378cc40b | 642 | first = *little++; |
a687059c LW |
643 | previous = littlestr->str_state; |
644 | #ifndef lint | |
645 | big = (unsigned char *)(bigstr->str_ptr); | |
646 | #else | |
647 | big = Null(unsigned char*); | |
648 | #endif | |
649 | bigend = big + bigstr->str_cur; | |
378cc40b LW |
650 | big -= previous; |
651 | while (pos < previous) { | |
a687059c | 652 | #ifndef lint |
378cc40b | 653 | if (!(pos += screamnext[pos])) |
a687059c | 654 | #endif |
378cc40b LW |
655 | return Nullch; |
656 | } | |
a687059c LW |
657 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insignificant? */ |
658 | do { | |
659 | if (big[pos] != first && big[pos] != fold[first]) | |
660 | continue; | |
661 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { | |
662 | if (x >= bigend) | |
663 | return Nullch; | |
664 | if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) { | |
665 | s--; | |
666 | break; | |
667 | } | |
668 | } | |
669 | if (s == littleend) | |
670 | #ifndef lint | |
671 | return (char *)(big+pos); | |
672 | #else | |
8d063cd8 | 673 | return Nullch; |
a687059c LW |
674 | #endif |
675 | } while ( | |
676 | #ifndef lint | |
677 | pos += screamnext[pos] /* does this goof up anywhere? */ | |
678 | #else | |
679 | pos += screamnext[0] | |
680 | #endif | |
681 | ); | |
682 | } | |
683 | else { | |
684 | do { | |
685 | if (big[pos] != first) | |
686 | continue; | |
687 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { | |
688 | if (x >= bigend) | |
689 | return Nullch; | |
690 | if (*s++ != *x++) { | |
691 | s--; | |
692 | break; | |
693 | } | |
378cc40b | 694 | } |
a687059c LW |
695 | if (s == littleend) |
696 | #ifndef lint | |
697 | return (char *)(big+pos); | |
698 | #else | |
699 | return Nullch; | |
700 | #endif | |
701 | } while ( | |
702 | #ifndef lint | |
703 | pos += screamnext[pos] | |
704 | #else | |
705 | pos += screamnext[0] | |
706 | #endif | |
707 | ); | |
708 | } | |
8d063cd8 LW |
709 | return Nullch; |
710 | } | |
711 | ||
712 | /* copy a string to a safe spot */ | |
713 | ||
714 | char * | |
715 | savestr(str) | |
716 | char *str; | |
717 | { | |
a687059c | 718 | register char *newaddr; |
8d063cd8 | 719 | |
a687059c | 720 | New(902,newaddr,strlen(str)+1,char); |
8d063cd8 LW |
721 | (void)strcpy(newaddr,str); |
722 | return newaddr; | |
723 | } | |
724 | ||
a687059c LW |
725 | /* same thing but with a known length */ |
726 | ||
727 | char * | |
728 | nsavestr(str, len) | |
729 | char *str; | |
730 | register int len; | |
731 | { | |
732 | register char *newaddr; | |
733 | ||
734 | New(903,newaddr,len+1,char); | |
735 | (void)bcopy(str,newaddr,len); /* might not be null terminated */ | |
736 | newaddr[len] = '\0'; /* is now */ | |
737 | return newaddr; | |
738 | } | |
739 | ||
8d063cd8 LW |
740 | /* grow a static string to at least a certain length */ |
741 | ||
742 | void | |
743 | growstr(strptr,curlen,newlen) | |
744 | char **strptr; | |
745 | int *curlen; | |
746 | int newlen; | |
747 | { | |
748 | if (newlen > *curlen) { /* need more room? */ | |
749 | if (*curlen) | |
a687059c | 750 | Renew(*strptr,newlen,char); |
8d063cd8 | 751 | else |
a687059c | 752 | New(905,*strptr,newlen,char); |
8d063cd8 LW |
753 | *curlen = newlen; |
754 | } | |
755 | } | |
756 | ||
a687059c | 757 | #ifndef VARARGS |
378cc40b LW |
758 | /*VARARGS1*/ |
759 | mess(pat,a1,a2,a3,a4) | |
760 | char *pat; | |
a687059c | 761 | long a1, a2, a3, a4; |
378cc40b LW |
762 | { |
763 | char *s; | |
764 | ||
a687059c LW |
765 | s = buf; |
766 | (void)sprintf(s,pat,a1,a2,a3,a4); | |
378cc40b LW |
767 | s += strlen(s); |
768 | if (s[-1] != '\n') { | |
62b28dd9 | 769 | if (curcmd->c_line) { |
20188a90 LW |
770 | (void)sprintf(s," at %s line %ld", |
771 | stab_val(curcmd->c_filestab)->str_ptr, (long)curcmd->c_line); | |
378cc40b LW |
772 | s += strlen(s); |
773 | } | |
774 | if (last_in_stab && | |
a687059c LW |
775 | stab_io(last_in_stab) && |
776 | stab_io(last_in_stab)->lines ) { | |
777 | (void)sprintf(s,", <%s> line %ld", | |
778 | last_in_stab == argvstab ? "" : stab_name(last_in_stab), | |
779 | (long)stab_io(last_in_stab)->lines); | |
378cc40b LW |
780 | s += strlen(s); |
781 | } | |
a687059c | 782 | (void)strcpy(s,".\n"); |
378cc40b LW |
783 | } |
784 | } | |
785 | ||
8d063cd8 LW |
786 | /*VARARGS1*/ |
787 | fatal(pat,a1,a2,a3,a4) | |
788 | char *pat; | |
a687059c | 789 | long a1, a2, a3, a4; |
8d063cd8 LW |
790 | { |
791 | extern FILE *e_fp; | |
792 | extern char *e_tmpname; | |
9f68db38 | 793 | char *tmps; |
8d063cd8 | 794 | |
378cc40b | 795 | mess(pat,a1,a2,a3,a4); |
a559c259 | 796 | if (in_eval) { |
a687059c | 797 | str_set(stab_val(stabent("@",TRUE)),buf); |
9f68db38 LW |
798 | tmps = "_EVAL_"; |
799 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || | |
800 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { | |
801 | #ifdef DEBUGGING | |
802 | if (debug & 4) { | |
803 | deb("(Skipping label #%d %s)\n",loop_ptr, | |
804 | loop_stack[loop_ptr].loop_label); | |
805 | } | |
806 | #endif | |
807 | loop_ptr--; | |
808 | } | |
809 | #ifdef DEBUGGING | |
810 | if (debug & 4) { | |
811 | deb("(Found label #%d %s)\n",loop_ptr, | |
812 | loop_stack[loop_ptr].loop_label); | |
813 | } | |
814 | #endif | |
815 | if (loop_ptr < 0) { | |
816 | in_eval = 0; | |
817 | fatal("Bad label: %s", tmps); | |
818 | } | |
819 | longjmp(loop_stack[loop_ptr].loop_env, 1); | |
a559c259 | 820 | } |
a687059c LW |
821 | fputs(buf,stderr); |
822 | (void)fflush(stderr); | |
8d063cd8 | 823 | if (e_fp) |
a687059c | 824 | (void)UNLINK(e_tmpname); |
378cc40b | 825 | statusvalue >>= 8; |
27e2fb84 | 826 | exit((int)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
378cc40b LW |
827 | } |
828 | ||
829 | /*VARARGS1*/ | |
830 | warn(pat,a1,a2,a3,a4) | |
831 | char *pat; | |
a687059c | 832 | long a1, a2, a3, a4; |
378cc40b LW |
833 | { |
834 | mess(pat,a1,a2,a3,a4); | |
a687059c LW |
835 | fputs(buf,stderr); |
836 | #ifdef LEAKTEST | |
837 | #ifdef DEBUGGING | |
838 | if (debug & 4096) | |
839 | xstat(); | |
840 | #endif | |
841 | #endif | |
842 | (void)fflush(stderr); | |
8d063cd8 | 843 | } |
a687059c LW |
844 | #else |
845 | /*VARARGS0*/ | |
846 | mess(args) | |
847 | va_list args; | |
848 | { | |
849 | char *pat; | |
850 | char *s; | |
851 | #ifdef CHARVSPRINTF | |
852 | char *vsprintf(); | |
853 | #else | |
854 | int vsprintf(); | |
855 | #endif | |
856 | ||
857 | s = buf; | |
858 | #ifdef lint | |
859 | pat = Nullch; | |
860 | #else | |
861 | pat = va_arg(args, char *); | |
862 | #endif | |
863 | (void) vsprintf(s,pat,args); | |
864 | ||
865 | s += strlen(s); | |
866 | if (s[-1] != '\n') { | |
62b28dd9 | 867 | if (curcmd->c_line) { |
20188a90 LW |
868 | (void)sprintf(s," at %s line %ld", |
869 | stab_val(curcmd->c_filestab)->str_ptr, (long)curcmd->c_line); | |
a687059c LW |
870 | s += strlen(s); |
871 | } | |
872 | if (last_in_stab && | |
873 | stab_io(last_in_stab) && | |
874 | stab_io(last_in_stab)->lines ) { | |
875 | (void)sprintf(s,", <%s> line %ld", | |
876 | last_in_stab == argvstab ? "" : last_in_stab->str_magic->str_ptr, | |
877 | (long)stab_io(last_in_stab)->lines); | |
878 | s += strlen(s); | |
879 | } | |
880 | (void)strcpy(s,".\n"); | |
881 | } | |
882 | } | |
883 | ||
884 | /*VARARGS0*/ | |
885 | fatal(va_alist) | |
886 | va_dcl | |
887 | { | |
888 | va_list args; | |
889 | extern FILE *e_fp; | |
890 | extern char *e_tmpname; | |
9f68db38 | 891 | char *tmps; |
a687059c LW |
892 | |
893 | #ifndef lint | |
894 | va_start(args); | |
895 | #else | |
896 | args = 0; | |
897 | #endif | |
898 | mess(args); | |
899 | va_end(args); | |
900 | if (in_eval) { | |
901 | str_set(stab_val(stabent("@",TRUE)),buf); | |
9f68db38 LW |
902 | tmps = "_EVAL_"; |
903 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || | |
904 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { | |
905 | #ifdef DEBUGGING | |
906 | if (debug & 4) { | |
907 | deb("(Skipping label #%d %s)\n",loop_ptr, | |
908 | loop_stack[loop_ptr].loop_label); | |
909 | } | |
910 | #endif | |
911 | loop_ptr--; | |
912 | } | |
913 | #ifdef DEBUGGING | |
914 | if (debug & 4) { | |
915 | deb("(Found label #%d %s)\n",loop_ptr, | |
916 | loop_stack[loop_ptr].loop_label); | |
917 | } | |
918 | #endif | |
919 | if (loop_ptr < 0) { | |
920 | in_eval = 0; | |
921 | fatal("Bad label: %s", tmps); | |
922 | } | |
923 | longjmp(loop_stack[loop_ptr].loop_env, 1); | |
a687059c LW |
924 | } |
925 | fputs(buf,stderr); | |
926 | (void)fflush(stderr); | |
927 | if (e_fp) | |
928 | (void)UNLINK(e_tmpname); | |
929 | statusvalue >>= 8; | |
27e2fb84 | 930 | exit((int)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
a687059c LW |
931 | } |
932 | ||
933 | /*VARARGS0*/ | |
934 | warn(va_alist) | |
935 | va_dcl | |
936 | { | |
937 | va_list args; | |
938 | ||
939 | #ifndef lint | |
940 | va_start(args); | |
941 | #else | |
942 | args = 0; | |
943 | #endif | |
944 | mess(args); | |
945 | va_end(args); | |
946 | ||
947 | fputs(buf,stderr); | |
948 | #ifdef LEAKTEST | |
949 | #ifdef DEBUGGING | |
950 | if (debug & 4096) | |
951 | xstat(); | |
952 | #endif | |
953 | #endif | |
954 | (void)fflush(stderr); | |
955 | } | |
956 | #endif | |
8d063cd8 | 957 | |
fe14fcc3 | 958 | #ifndef __STDC__ |
8d063cd8 | 959 | extern char **environ; |
fe14fcc3 | 960 | #endif |
8d063cd8 LW |
961 | |
962 | void | |
963 | setenv(nam,val) | |
964 | char *nam, *val; | |
965 | { | |
966 | register int i=envix(nam); /* where does it go? */ | |
967 | ||
fe14fcc3 LW |
968 | if (environ == origenviron) { /* need we copy environment? */ |
969 | int j; | |
970 | int max; | |
971 | char **tmpenv; | |
972 | ||
973 | for (max = i; environ[max]; max++) ; | |
974 | New(901,tmpenv, max+2, char*); | |
975 | for (j=0; j<max; j++) /* copy environment */ | |
976 | tmpenv[j] = savestr(environ[j]); | |
977 | tmpenv[max] = Nullch; | |
978 | environ = tmpenv; /* tell exec where it is now */ | |
979 | } | |
a687059c LW |
980 | if (!val) { |
981 | while (environ[i]) { | |
982 | environ[i] = environ[i+1]; | |
983 | i++; | |
984 | } | |
985 | return; | |
986 | } | |
8d063cd8 | 987 | if (!environ[i]) { /* does not exist yet */ |
fe14fcc3 | 988 | Renew(environ, i+2, char*); /* just expand it a bit */ |
8d063cd8 LW |
989 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
990 | } | |
fe14fcc3 LW |
991 | else |
992 | Safefree(environ[i]); | |
a687059c | 993 | New(904, environ[i], strlen(nam) + strlen(val) + 2, char); |
62b28dd9 | 994 | #ifndef MSDOS |
a687059c | 995 | (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */ |
62b28dd9 LW |
996 | #else |
997 | /* MS-DOS requires environment variable names to be in uppercase */ | |
fe14fcc3 LW |
998 | /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but |
999 | * some utilities and applications may break because they only look | |
1000 | * for upper case strings. (Fixed strupr() bug here.)] | |
1001 | */ | |
1002 | strcpy(environ[i],nam); strupr(environ[i]); | |
62b28dd9 LW |
1003 | (void)sprintf(environ[i] + strlen(nam),"=%s",val); |
1004 | #endif /* MSDOS */ | |
8d063cd8 LW |
1005 | } |
1006 | ||
1007 | int | |
1008 | envix(nam) | |
1009 | char *nam; | |
1010 | { | |
1011 | register int i, len = strlen(nam); | |
1012 | ||
1013 | for (i = 0; environ[i]; i++) { | |
1014 | if (strnEQ(environ[i],nam,len) && environ[i][len] == '=') | |
1015 | break; /* strnEQ must come first to avoid */ | |
1016 | } /* potential SEGV's */ | |
1017 | return i; | |
1018 | } | |
378cc40b LW |
1019 | |
1020 | #ifdef EUNICE | |
1021 | unlnk(f) /* unlink all versions of a file */ | |
1022 | char *f; | |
1023 | { | |
1024 | int i; | |
1025 | ||
1026 | for (i = 0; unlink(f) >= 0; i++) ; | |
1027 | return i ? 0 : -1; | |
1028 | } | |
1029 | #endif | |
1030 | ||
fe14fcc3 LW |
1031 | #ifndef HAS_MEMCPY |
1032 | #ifndef HAS_BCOPY | |
378cc40b LW |
1033 | char * |
1034 | bcopy(from,to,len) | |
1035 | register char *from; | |
1036 | register char *to; | |
1037 | register int len; | |
1038 | { | |
1039 | char *retval = to; | |
1040 | ||
1041 | while (len--) | |
1042 | *to++ = *from++; | |
1043 | return retval; | |
1044 | } | |
ffed7fef | 1045 | #endif |
378cc40b | 1046 | |
fe14fcc3 | 1047 | #ifndef HAS_BZERO |
378cc40b LW |
1048 | char * |
1049 | bzero(loc,len) | |
1050 | register char *loc; | |
1051 | register int len; | |
1052 | { | |
1053 | char *retval = loc; | |
1054 | ||
1055 | while (len--) | |
1056 | *loc++ = 0; | |
1057 | return retval; | |
1058 | } | |
1059 | #endif | |
1060 | #endif | |
a687059c LW |
1061 | |
1062 | #ifdef VARARGS | |
fe14fcc3 | 1063 | #ifndef HAS_VPRINTF |
a687059c LW |
1064 | |
1065 | #ifdef CHARVSPRINTF | |
1066 | char * | |
1067 | #else | |
1068 | int | |
1069 | #endif | |
1070 | vsprintf(dest, pat, args) | |
1071 | char *dest, *pat, *args; | |
1072 | { | |
1073 | FILE fakebuf; | |
1074 | ||
1075 | fakebuf._ptr = dest; | |
1076 | fakebuf._cnt = 32767; | |
1077 | fakebuf._flag = _IOWRT|_IOSTRG; | |
1078 | _doprnt(pat, args, &fakebuf); /* what a kludge */ | |
1079 | (void)putc('\0', &fakebuf); | |
1080 | #ifdef CHARVSPRINTF | |
1081 | return(dest); | |
1082 | #else | |
1083 | return 0; /* perl doesn't use return value */ | |
1084 | #endif | |
1085 | } | |
1086 | ||
1087 | #ifdef DEBUGGING | |
1088 | int | |
1089 | vfprintf(fd, pat, args) | |
1090 | FILE *fd; | |
1091 | char *pat, *args; | |
1092 | { | |
1093 | _doprnt(pat, args, fd); | |
1094 | return 0; /* wrong, but perl doesn't use the return value */ | |
1095 | } | |
1096 | #endif | |
fe14fcc3 | 1097 | #endif /* HAS_VPRINTF */ |
a687059c LW |
1098 | #endif /* VARARGS */ |
1099 | ||
1100 | #ifdef MYSWAP | |
ffed7fef | 1101 | #if BYTEORDER != 0x4321 |
a687059c LW |
1102 | short |
1103 | my_swap(s) | |
1104 | short s; | |
1105 | { | |
1106 | #if (BYTEORDER & 1) == 0 | |
1107 | short result; | |
1108 | ||
1109 | result = ((s & 255) << 8) + ((s >> 8) & 255); | |
1110 | return result; | |
1111 | #else | |
1112 | return s; | |
1113 | #endif | |
1114 | } | |
1115 | ||
1116 | long | |
1117 | htonl(l) | |
1118 | register long l; | |
1119 | { | |
1120 | union { | |
1121 | long result; | |
ffed7fef | 1122 | char c[sizeof(long)]; |
a687059c LW |
1123 | } u; |
1124 | ||
ffed7fef | 1125 | #if BYTEORDER == 0x1234 |
a687059c LW |
1126 | u.c[0] = (l >> 24) & 255; |
1127 | u.c[1] = (l >> 16) & 255; | |
1128 | u.c[2] = (l >> 8) & 255; | |
1129 | u.c[3] = l & 255; | |
1130 | return u.result; | |
1131 | #else | |
ffed7fef | 1132 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
a687059c LW |
1133 | fatal("Unknown BYTEORDER\n"); |
1134 | #else | |
1135 | register int o; | |
1136 | register int s; | |
1137 | ||
ffed7fef LW |
1138 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1139 | u.c[o & 0xf] = (l >> s) & 255; | |
a687059c LW |
1140 | } |
1141 | return u.result; | |
1142 | #endif | |
1143 | #endif | |
1144 | } | |
1145 | ||
1146 | long | |
1147 | ntohl(l) | |
1148 | register long l; | |
1149 | { | |
1150 | union { | |
1151 | long l; | |
ffed7fef | 1152 | char c[sizeof(long)]; |
a687059c LW |
1153 | } u; |
1154 | ||
ffed7fef | 1155 | #if BYTEORDER == 0x1234 |
a687059c LW |
1156 | u.c[0] = (l >> 24) & 255; |
1157 | u.c[1] = (l >> 16) & 255; | |
1158 | u.c[2] = (l >> 8) & 255; | |
1159 | u.c[3] = l & 255; | |
1160 | return u.l; | |
1161 | #else | |
ffed7fef | 1162 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
a687059c LW |
1163 | fatal("Unknown BYTEORDER\n"); |
1164 | #else | |
1165 | register int o; | |
1166 | register int s; | |
1167 | ||
1168 | u.l = l; | |
1169 | l = 0; | |
ffed7fef LW |
1170 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1171 | l |= (u.c[o & 0xf] & 255) << s; | |
a687059c LW |
1172 | } |
1173 | return l; | |
1174 | #endif | |
1175 | #endif | |
1176 | } | |
1177 | ||
ffed7fef | 1178 | #endif /* BYTEORDER != 0x4321 */ |
fe14fcc3 | 1179 | #endif /* HAS_HTONS */ |
a687059c | 1180 | |
0f85fab0 | 1181 | #ifndef MSDOS |
a687059c LW |
1182 | FILE * |
1183 | mypopen(cmd,mode) | |
1184 | char *cmd; | |
1185 | char *mode; | |
1186 | { | |
1187 | int p[2]; | |
1188 | register int this, that; | |
1189 | register int pid; | |
1190 | STR *str; | |
1191 | int doexec = strNE(cmd,"-"); | |
1192 | ||
1193 | if (pipe(p) < 0) | |
1194 | return Nullfp; | |
1195 | this = (*mode == 'w'); | |
1196 | that = !this; | |
1197 | while ((pid = (doexec?vfork():fork())) < 0) { | |
1198 | if (errno != EAGAIN) { | |
1199 | close(p[this]); | |
1200 | if (!doexec) | |
1201 | fatal("Can't fork"); | |
1202 | return Nullfp; | |
1203 | } | |
1204 | sleep(5); | |
1205 | } | |
1206 | if (pid == 0) { | |
1207 | #define THIS that | |
1208 | #define THAT this | |
1209 | close(p[THAT]); | |
1210 | if (p[THIS] != (*mode == 'r')) { | |
1211 | dup2(p[THIS], *mode == 'r'); | |
1212 | close(p[THIS]); | |
1213 | } | |
1214 | if (doexec) { | |
fe14fcc3 | 1215 | #if !defined(I_FCNTL) || !defined(F_SETFD) |
ae986130 LW |
1216 | int fd; |
1217 | ||
1218 | #ifndef NOFILE | |
1219 | #define NOFILE 20 | |
1220 | #endif | |
1221 | for (fd = 3; fd < NOFILE; fd++) | |
1222 | close(fd); | |
1223 | #endif | |
a687059c LW |
1224 | do_exec(cmd); /* may or may not use the shell */ |
1225 | _exit(1); | |
1226 | } | |
1227 | if (tmpstab = stabent("$",allstabs)) | |
1228 | str_numset(STAB_STR(tmpstab),(double)getpid()); | |
9f68db38 | 1229 | forkprocess = 0; |
fe14fcc3 | 1230 | hclear(pidstatus, FALSE); /* we have no children */ |
a687059c LW |
1231 | return Nullfp; |
1232 | #undef THIS | |
1233 | #undef THAT | |
1234 | } | |
62b28dd9 | 1235 | do_execfree(); /* free any memory malloced by child on vfork */ |
a687059c | 1236 | close(p[that]); |
62b28dd9 LW |
1237 | if (p[that] < p[this]) { |
1238 | dup2(p[this], p[that]); | |
1239 | close(p[this]); | |
1240 | p[this] = p[that]; | |
1241 | } | |
20188a90 LW |
1242 | str = afetch(fdpid,p[this],TRUE); |
1243 | str->str_u.str_useful = pid; | |
a687059c LW |
1244 | forkprocess = pid; |
1245 | return fdopen(p[this], mode); | |
1246 | } | |
0f85fab0 | 1247 | #endif /* !MSDOS */ |
a687059c | 1248 | |
ae986130 LW |
1249 | #ifdef NOTDEF |
1250 | dumpfds(s) | |
1251 | char *s; | |
1252 | { | |
1253 | int fd; | |
1254 | struct stat tmpstatbuf; | |
1255 | ||
1256 | fprintf(stderr,"%s", s); | |
1257 | for (fd = 0; fd < 32; fd++) { | |
1258 | if (fstat(fd,&tmpstatbuf) >= 0) | |
1259 | fprintf(stderr," %d",fd); | |
1260 | } | |
1261 | fprintf(stderr,"\n"); | |
1262 | } | |
1263 | #endif | |
1264 | ||
fe14fcc3 | 1265 | #ifndef HAS_DUP2 |
a687059c LW |
1266 | dup2(oldfd,newfd) |
1267 | int oldfd; | |
1268 | int newfd; | |
1269 | { | |
fe14fcc3 | 1270 | #if defined(HAS_FCNTL) && defined(F_DUPFD) |
62b28dd9 LW |
1271 | close(newfd); |
1272 | fcntl(oldfd, F_DUPFD, newfd); | |
1273 | #else | |
1274 | int fdtmp[20]; | |
ae986130 LW |
1275 | int fdx = 0; |
1276 | int fd; | |
1277 | ||
fe14fcc3 LW |
1278 | if (oldfd == newfd) |
1279 | return 0; | |
a687059c | 1280 | close(newfd); |
ae986130 LW |
1281 | while ((fd = dup(oldfd)) != newfd) /* good enough for low fd's */ |
1282 | fdtmp[fdx++] = fd; | |
1283 | while (fdx > 0) | |
1284 | close(fdtmp[--fdx]); | |
62b28dd9 | 1285 | #endif |
a687059c LW |
1286 | } |
1287 | #endif | |
1288 | ||
0f85fab0 | 1289 | #ifndef MSDOS |
a687059c LW |
1290 | int |
1291 | mypclose(ptr) | |
1292 | FILE *ptr; | |
1293 | { | |
a687059c LW |
1294 | #ifdef VOIDSIG |
1295 | void (*hstat)(), (*istat)(), (*qstat)(); | |
1296 | #else | |
1297 | int (*hstat)(), (*istat)(), (*qstat)(); | |
1298 | #endif | |
1299 | int status; | |
1300 | STR *str; | |
20188a90 | 1301 | int pid; |
a687059c | 1302 | |
20188a90 LW |
1303 | str = afetch(fdpid,fileno(ptr),TRUE); |
1304 | astore(fdpid,fileno(ptr),Nullstr); | |
a687059c | 1305 | fclose(ptr); |
20188a90 | 1306 | pid = (int)str->str_u.str_useful; |
a687059c LW |
1307 | hstat = signal(SIGHUP, SIG_IGN); |
1308 | istat = signal(SIGINT, SIG_IGN); | |
1309 | qstat = signal(SIGQUIT, SIG_IGN); | |
20188a90 LW |
1310 | pid = wait4pid(pid, &status, 0); |
1311 | signal(SIGHUP, hstat); | |
1312 | signal(SIGINT, istat); | |
1313 | signal(SIGQUIT, qstat); | |
1314 | return(pid < 0 ? pid : status); | |
1315 | } | |
1316 | ||
1317 | int | |
1318 | wait4pid(pid,statusp,flags) | |
1319 | int pid; | |
1320 | int *statusp; | |
1321 | int flags; | |
1322 | { | |
1323 | int result; | |
1324 | STR *str; | |
1325 | char spid[16]; | |
1326 | ||
1327 | if (!pid) | |
1328 | return -1; | |
fe14fcc3 LW |
1329 | #ifdef HAS_WAIT4 |
1330 | return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *)); | |
a687059c | 1331 | #else |
fe14fcc3 | 1332 | #ifdef HAS_WAITPID |
20188a90 LW |
1333 | return waitpid(pid,statusp,flags); |
1334 | #else | |
1335 | if (pid > 0) { | |
1336 | sprintf(spid, "%d", pid); | |
e5d73d77 | 1337 | str = hfetch(pidstatus,spid,strlen(spid),FALSE); |
20188a90 LW |
1338 | if (str != &str_undef) { |
1339 | *statusp = (int)str->str_u.str_useful; | |
e5d73d77 | 1340 | hdelete(pidstatus,spid,strlen(spid)); |
20188a90 LW |
1341 | return pid; |
1342 | } | |
1343 | } | |
1344 | else { | |
1345 | HENT *entry; | |
1346 | ||
1347 | hiterinit(pidstatus); | |
1348 | if (entry = hiternext(pidstatus)) { | |
1349 | pid = atoi(hiterkey(entry,statusp)); | |
1350 | str = hiterval(entry); | |
1351 | *statusp = (int)str->str_u.str_useful; | |
1352 | sprintf(spid, "%d", pid); | |
e5d73d77 | 1353 | hdelete(pidstatus,spid,strlen(spid)); |
20188a90 LW |
1354 | return pid; |
1355 | } | |
1356 | } | |
1357 | if (flags) | |
1358 | fatal("Can't do waitpid with flags"); | |
a687059c | 1359 | else { |
20188a90 LW |
1360 | while ((result = wait(statusp)) != pid && pid > 0 && result >= 0) |
1361 | pidgone(result,*statusp); | |
a687059c | 1362 | if (result < 0) |
20188a90 | 1363 | *statusp = -1; |
a687059c | 1364 | } |
e5d73d77 | 1365 | return result; |
a687059c | 1366 | #endif |
20188a90 | 1367 | #endif |
a687059c LW |
1368 | } |
1369 | ||
1370 | pidgone(pid,status) | |
1371 | int pid; | |
1372 | int status; | |
1373 | { | |
fe14fcc3 | 1374 | #if defined(HAS_WAIT4) || defined(HAS_WAITPID) |
a687059c | 1375 | #else |
a687059c | 1376 | register STR *str; |
20188a90 | 1377 | char spid[16]; |
a687059c | 1378 | |
20188a90 | 1379 | sprintf(spid, "%d", pid); |
e5d73d77 | 1380 | str = hfetch(pidstatus,spid,strlen(spid),TRUE); |
20188a90 | 1381 | str->str_u.str_useful = status; |
a687059c | 1382 | #endif |
20188a90 | 1383 | return; |
a687059c | 1384 | } |
fe14fcc3 | 1385 | #endif /* !MSDOS */ |
a687059c | 1386 | |
fe14fcc3 | 1387 | #ifndef HAS_MEMCMP |
a687059c LW |
1388 | memcmp(s1,s2,len) |
1389 | register unsigned char *s1; | |
1390 | register unsigned char *s2; | |
1391 | register int len; | |
1392 | { | |
1393 | register int tmp; | |
1394 | ||
1395 | while (len--) { | |
1396 | if (tmp = *s1++ - *s2++) | |
1397 | return tmp; | |
1398 | } | |
1399 | return 0; | |
1400 | } | |
fe14fcc3 | 1401 | #endif /* HAS_MEMCMP */ |
9f68db38 LW |
1402 | |
1403 | void | |
1404 | repeatcpy(to,from,len,count) | |
1405 | register char *to; | |
1406 | register char *from; | |
1407 | int len; | |
1408 | register int count; | |
1409 | { | |
1410 | register int todo; | |
1411 | register char *frombase = from; | |
1412 | ||
1413 | if (len == 1) { | |
1414 | todo = *from; | |
1415 | while (count-- > 0) | |
1416 | *to++ = todo; | |
1417 | return; | |
1418 | } | |
1419 | while (count-- > 0) { | |
1420 | for (todo = len; todo > 0; todo--) { | |
1421 | *to++ = *from++; | |
1422 | } | |
1423 | from = frombase; | |
1424 | } | |
1425 | } | |
0f85fab0 LW |
1426 | |
1427 | #ifndef CASTNEGFLOAT | |
1428 | unsigned long | |
1429 | castulong(f) | |
1430 | double f; | |
1431 | { | |
1432 | long along; | |
1433 | ||
27e2fb84 | 1434 | #if CASTFLAGS & 2 |
34de22dd LW |
1435 | # define BIGDOUBLE 2147483648.0 |
1436 | if (f >= BIGDOUBLE) | |
1437 | return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000; | |
1438 | #endif | |
0f85fab0 LW |
1439 | if (f >= 0.0) |
1440 | return (unsigned long)f; | |
1441 | along = (long)f; | |
1442 | return (unsigned long)along; | |
1443 | } | |
1444 | #endif | |
62b28dd9 | 1445 | |
fe14fcc3 | 1446 | #ifndef HAS_RENAME |
62b28dd9 LW |
1447 | int |
1448 | same_dirent(a,b) | |
1449 | char *a; | |
1450 | char *b; | |
1451 | { | |
1452 | char *fa = rindex(a,'/'); | |
1453 | char *fb = rindex(b,'/'); | |
1454 | struct stat tmpstatbuf1; | |
1455 | struct stat tmpstatbuf2; | |
1456 | #ifndef MAXPATHLEN | |
1457 | #define MAXPATHLEN 1024 | |
1458 | #endif | |
1459 | char tmpbuf[MAXPATHLEN+1]; | |
1460 | ||
1461 | if (fa) | |
1462 | fa++; | |
1463 | else | |
1464 | fa = a; | |
1465 | if (fb) | |
1466 | fb++; | |
1467 | else | |
1468 | fb = b; | |
1469 | if (strNE(a,b)) | |
1470 | return FALSE; | |
1471 | if (fa == a) | |
6eb13c3b | 1472 | strcpy(tmpbuf,"."); |
62b28dd9 LW |
1473 | else |
1474 | strncpy(tmpbuf, a, fa - a); | |
1475 | if (stat(tmpbuf, &tmpstatbuf1) < 0) | |
1476 | return FALSE; | |
1477 | if (fb == b) | |
6eb13c3b | 1478 | strcpy(tmpbuf,"."); |
62b28dd9 LW |
1479 | else |
1480 | strncpy(tmpbuf, b, fb - b); | |
1481 | if (stat(tmpbuf, &tmpstatbuf2) < 0) | |
1482 | return FALSE; | |
1483 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && | |
1484 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; | |
1485 | } | |
fe14fcc3 LW |
1486 | #endif /* !HAS_RENAME */ |
1487 | ||
1488 | unsigned long | |
1489 | scanoct(start, len, retlen) | |
1490 | char *start; | |
1491 | int len; | |
1492 | int *retlen; | |
1493 | { | |
1494 | register char *s = start; | |
1495 | register unsigned long retval = 0; | |
1496 | ||
1497 | while (len-- && *s >= '0' && *s <= '7') { | |
1498 | retval <<= 3; | |
1499 | retval |= *s++ - '0'; | |
1500 | } | |
1501 | *retlen = s - start; | |
1502 | return retval; | |
1503 | } | |
1504 | ||
1505 | unsigned long | |
1506 | scanhex(start, len, retlen) | |
1507 | char *start; | |
1508 | int len; | |
1509 | int *retlen; | |
1510 | { | |
1511 | register char *s = start; | |
1512 | register unsigned long retval = 0; | |
1513 | char *tmp; | |
1514 | ||
1515 | while (len-- && *s && (tmp = index(hexdigit, *s))) { | |
1516 | retval <<= 4; | |
1517 | retval |= (tmp - hexdigit) & 15; | |
1518 | s++; | |
1519 | } | |
1520 | *retlen = s - start; | |
1521 | return retval; | |
1522 | } |