Commit | Line | Data |
---|---|---|
0f85fab0 | 1 | /* $Header: util.c,v 3.0.1.5 90/03/27 16:35:13 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 $ | |
0f85fab0 LW |
9 | * Revision 3.0.1.5 90/03/27 16:35:13 lwall |
10 | * patch16: MSDOS support | |
11 | * patch16: support for machines that can't cast negative floats to unsigned ints | |
12 | * patch16: tail anchored pattern could dump if string to search was shorter | |
13 | * | |
9f68db38 LW |
14 | * Revision 3.0.1.4 90/03/01 10:26:48 lwall |
15 | * patch9: fbminstr() called instr() rather than ninstr() | |
16 | * patch9: nested evals clobbered their longjmp environment | |
17 | * patch9: piped opens returned undefined rather than 0 in child | |
18 | * patch9: the x operator is now up to 10 times faster | |
19 | * | |
663a0e37 LW |
20 | * Revision 3.0.1.3 89/12/21 20:27:41 lwall |
21 | * patch7: errno may now be a macro with an lvalue | |
22 | * | |
ffed7fef LW |
23 | * Revision 3.0.1.2 89/11/17 15:46:35 lwall |
24 | * patch5: BZERO separate from BCOPY now | |
25 | * patch5: byteorder now is a hex value | |
26 | * | |
ae986130 LW |
27 | * Revision 3.0.1.1 89/11/11 05:06:13 lwall |
28 | * patch2: made dup2 a little better | |
29 | * | |
a687059c LW |
30 | * Revision 3.0 89/10/18 15:32:43 lwall |
31 | * 3.0 baseline | |
8d063cd8 LW |
32 | * |
33 | */ | |
34 | ||
8d063cd8 | 35 | #include "EXTERN.h" |
8d063cd8 | 36 | #include "perl.h" |
a687059c LW |
37 | #include <signal.h> |
38 | ||
39 | #ifdef I_VFORK | |
40 | # include <vfork.h> | |
41 | #endif | |
42 | ||
43 | #ifdef I_VARARGS | |
44 | # include <varargs.h> | |
45 | #endif | |
8d063cd8 LW |
46 | |
47 | #define FLUSH | |
8d063cd8 LW |
48 | |
49 | static char nomem[] = "Out of memory!\n"; | |
50 | ||
51 | /* paranoid version of malloc */ | |
52 | ||
378cc40b | 53 | #ifdef DEBUGGING |
8d063cd8 | 54 | static int an = 0; |
378cc40b | 55 | #endif |
8d063cd8 | 56 | |
a687059c LW |
57 | /* NOTE: Do not call the next three routines directly. Use the macros |
58 | * in handy.h, so that we can easily redefine everything to do tracking of | |
59 | * allocated hunks back to the original New to track down any memory leaks. | |
60 | */ | |
61 | ||
8d063cd8 LW |
62 | char * |
63 | safemalloc(size) | |
64 | MEM_SIZE size; | |
65 | { | |
66 | char *ptr; | |
67 | char *malloc(); | |
68 | ||
69 | ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */ | |
70 | #ifdef DEBUGGING | |
a687059c | 71 | # ifndef I286 |
8d063cd8 LW |
72 | if (debug & 128) |
73 | fprintf(stderr,"0x%x: (%05d) malloc %d bytes\n",ptr,an++,size); | |
a687059c LW |
74 | # else |
75 | if (debug & 128) | |
76 | fprintf(stderr,"0x%lx: (%05d) malloc %d bytes\n",ptr,an++,size); | |
77 | # endif | |
8d063cd8 LW |
78 | #endif |
79 | if (ptr != Nullch) | |
80 | return ptr; | |
81 | else { | |
82 | fputs(nomem,stdout) FLUSH; | |
83 | exit(1); | |
84 | } | |
85 | /*NOTREACHED*/ | |
a687059c LW |
86 | #ifdef lint |
87 | return ptr; | |
88 | #endif | |
8d063cd8 LW |
89 | } |
90 | ||
91 | /* paranoid version of realloc */ | |
92 | ||
93 | char * | |
94 | saferealloc(where,size) | |
95 | char *where; | |
96 | MEM_SIZE size; | |
97 | { | |
98 | char *ptr; | |
99 | char *realloc(); | |
100 | ||
378cc40b LW |
101 | if (!where) |
102 | fatal("Null realloc"); | |
8d063cd8 LW |
103 | ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */ |
104 | #ifdef DEBUGGING | |
a687059c | 105 | # ifndef I286 |
8d063cd8 LW |
106 | if (debug & 128) { |
107 | fprintf(stderr,"0x%x: (%05d) rfree\n",where,an++); | |
108 | fprintf(stderr,"0x%x: (%05d) realloc %d bytes\n",ptr,an++,size); | |
109 | } | |
a687059c LW |
110 | # else |
111 | if (debug & 128) { | |
112 | fprintf(stderr,"0x%lx: (%05d) rfree\n",where,an++); | |
113 | fprintf(stderr,"0x%lx: (%05d) realloc %d bytes\n",ptr,an++,size); | |
114 | } | |
115 | # endif | |
8d063cd8 LW |
116 | #endif |
117 | if (ptr != Nullch) | |
118 | return ptr; | |
119 | else { | |
120 | fputs(nomem,stdout) FLUSH; | |
121 | exit(1); | |
122 | } | |
123 | /*NOTREACHED*/ | |
a687059c LW |
124 | #ifdef lint |
125 | return ptr; | |
126 | #endif | |
8d063cd8 LW |
127 | } |
128 | ||
129 | /* safe version of free */ | |
130 | ||
a687059c | 131 | void |
8d063cd8 LW |
132 | safefree(where) |
133 | char *where; | |
134 | { | |
135 | #ifdef DEBUGGING | |
a687059c | 136 | # ifndef I286 |
8d063cd8 LW |
137 | if (debug & 128) |
138 | fprintf(stderr,"0x%x: (%05d) free\n",where,an++); | |
a687059c LW |
139 | # else |
140 | if (debug & 128) | |
141 | fprintf(stderr,"0x%lx: (%05d) free\n",where,an++); | |
142 | # endif | |
8d063cd8 | 143 | #endif |
378cc40b LW |
144 | if (where) { |
145 | free(where); | |
146 | } | |
8d063cd8 LW |
147 | } |
148 | ||
a687059c LW |
149 | #ifdef LEAKTEST |
150 | ||
151 | #define ALIGN sizeof(long) | |
8d063cd8 LW |
152 | |
153 | char * | |
a687059c LW |
154 | safexmalloc(x,size) |
155 | int x; | |
156 | MEM_SIZE size; | |
8d063cd8 | 157 | { |
a687059c | 158 | register char *where; |
8d063cd8 | 159 | |
a687059c LW |
160 | where = safemalloc(size + ALIGN); |
161 | xcount[x]++; | |
162 | where[0] = x % 100; | |
163 | where[1] = x / 100; | |
164 | return where + ALIGN; | |
8d063cd8 | 165 | } |
8d063cd8 LW |
166 | |
167 | char * | |
a687059c LW |
168 | safexrealloc(where,size) |
169 | char *where; | |
170 | MEM_SIZE size; | |
171 | { | |
172 | return saferealloc(where - ALIGN, size + ALIGN) + ALIGN; | |
173 | } | |
174 | ||
175 | void | |
176 | safexfree(where) | |
177 | char *where; | |
178 | { | |
179 | int x; | |
180 | ||
181 | if (!where) | |
182 | return; | |
183 | where -= ALIGN; | |
184 | x = where[0] + 100 * where[1]; | |
185 | xcount[x]--; | |
186 | safefree(where); | |
187 | } | |
188 | ||
189 | xstat() | |
8d063cd8 | 190 | { |
a687059c | 191 | register int i; |
8d063cd8 | 192 | |
a687059c LW |
193 | for (i = 0; i < MAXXCOUNT; i++) { |
194 | if (xcount[i] != lastxcount[i]) { | |
195 | fprintf(stderr,"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]); | |
196 | lastxcount[i] = xcount[i]; | |
8d063cd8 LW |
197 | } |
198 | } | |
8d063cd8 | 199 | } |
a687059c LW |
200 | |
201 | #endif /* LEAKTEST */ | |
8d063cd8 LW |
202 | |
203 | /* copy a string up to some (non-backslashed) delimiter, if any */ | |
204 | ||
205 | char * | |
a687059c | 206 | cpytill(to,from,fromend,delim,retlen) |
8d063cd8 | 207 | register char *to, *from; |
a687059c | 208 | register char *fromend; |
8d063cd8 | 209 | register int delim; |
a687059c | 210 | int *retlen; |
8d063cd8 | 211 | { |
a687059c LW |
212 | char *origto = to; |
213 | ||
214 | for (; from < fromend; from++,to++) { | |
378cc40b LW |
215 | if (*from == '\\') { |
216 | if (from[1] == delim) | |
217 | from++; | |
218 | else if (from[1] == '\\') | |
219 | *to++ = *from++; | |
220 | } | |
8d063cd8 LW |
221 | else if (*from == delim) |
222 | break; | |
223 | *to = *from; | |
224 | } | |
225 | *to = '\0'; | |
a687059c | 226 | *retlen = to - origto; |
8d063cd8 LW |
227 | return from; |
228 | } | |
229 | ||
230 | /* return ptr to little string in big string, NULL if not found */ | |
378cc40b | 231 | /* This routine was donated by Corey Satten. */ |
8d063cd8 LW |
232 | |
233 | char * | |
234 | instr(big, little) | |
378cc40b LW |
235 | register char *big; |
236 | register char *little; | |
237 | { | |
238 | register char *s, *x; | |
a687059c | 239 | register int first; |
378cc40b | 240 | |
a687059c LW |
241 | if (!little) |
242 | return big; | |
243 | first = *little++; | |
378cc40b LW |
244 | if (!first) |
245 | return big; | |
246 | while (*big) { | |
247 | if (*big++ != first) | |
248 | continue; | |
249 | for (x=big,s=little; *s; /**/ ) { | |
250 | if (!*x) | |
251 | return Nullch; | |
252 | if (*s++ != *x++) { | |
253 | s--; | |
254 | break; | |
255 | } | |
256 | } | |
257 | if (!*s) | |
258 | return big-1; | |
259 | } | |
260 | return Nullch; | |
261 | } | |
8d063cd8 | 262 | |
a687059c LW |
263 | /* same as instr but allow embedded nulls */ |
264 | ||
265 | char * | |
266 | ninstr(big, bigend, little, lend) | |
267 | register char *big; | |
268 | register char *bigend; | |
269 | char *little; | |
270 | char *lend; | |
8d063cd8 | 271 | { |
a687059c LW |
272 | register char *s, *x; |
273 | register int first = *little; | |
274 | register char *littleend = lend; | |
378cc40b | 275 | |
a687059c LW |
276 | if (!first && little > littleend) |
277 | return big; | |
278 | bigend -= littleend - little++; | |
279 | while (big <= bigend) { | |
280 | if (*big++ != first) | |
281 | continue; | |
282 | for (x=big,s=little; s < littleend; /**/ ) { | |
283 | if (*s++ != *x++) { | |
284 | s--; | |
285 | break; | |
286 | } | |
287 | } | |
288 | if (s >= littleend) | |
289 | return big-1; | |
378cc40b | 290 | } |
a687059c LW |
291 | return Nullch; |
292 | } | |
293 | ||
294 | /* reverse of the above--find last substring */ | |
295 | ||
296 | char * | |
297 | rninstr(big, bigend, little, lend) | |
298 | register char *big; | |
299 | char *bigend; | |
300 | char *little; | |
301 | char *lend; | |
302 | { | |
303 | register char *bigbeg; | |
304 | register char *s, *x; | |
305 | register int first = *little; | |
306 | register char *littleend = lend; | |
307 | ||
308 | if (!first && little > littleend) | |
309 | return bigend; | |
310 | bigbeg = big; | |
311 | big = bigend - (littleend - little++); | |
312 | while (big >= bigbeg) { | |
313 | if (*big-- != first) | |
314 | continue; | |
315 | for (x=big+2,s=little; s < littleend; /**/ ) { | |
316 | if (*s++ != *x++) { | |
317 | s--; | |
318 | break; | |
319 | } | |
320 | } | |
321 | if (s >= littleend) | |
322 | return big+1; | |
378cc40b | 323 | } |
a687059c | 324 | return Nullch; |
378cc40b | 325 | } |
a687059c LW |
326 | |
327 | unsigned char fold[] = { | |
328 | 0, 1, 2, 3, 4, 5, 6, 7, | |
329 | 8, 9, 10, 11, 12, 13, 14, 15, | |
330 | 16, 17, 18, 19, 20, 21, 22, 23, | |
331 | 24, 25, 26, 27, 28, 29, 30, 31, | |
332 | 32, 33, 34, 35, 36, 37, 38, 39, | |
333 | 40, 41, 42, 43, 44, 45, 46, 47, | |
334 | 48, 49, 50, 51, 52, 53, 54, 55, | |
335 | 56, 57, 58, 59, 60, 61, 62, 63, | |
336 | 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', | |
337 | 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', | |
338 | 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', | |
339 | 'x', 'y', 'z', 91, 92, 93, 94, 95, | |
340 | 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G', | |
341 | 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', | |
342 | 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', | |
343 | 'X', 'Y', 'Z', 123, 124, 125, 126, 127, | |
344 | 128, 129, 130, 131, 132, 133, 134, 135, | |
345 | 136, 137, 138, 139, 140, 141, 142, 143, | |
346 | 144, 145, 146, 147, 148, 149, 150, 151, | |
347 | 152, 153, 154, 155, 156, 157, 158, 159, | |
348 | 160, 161, 162, 163, 164, 165, 166, 167, | |
349 | 168, 169, 170, 171, 172, 173, 174, 175, | |
350 | 176, 177, 178, 179, 180, 181, 182, 183, | |
351 | 184, 185, 186, 187, 188, 189, 190, 191, | |
352 | 192, 193, 194, 195, 196, 197, 198, 199, | |
353 | 200, 201, 202, 203, 204, 205, 206, 207, | |
354 | 208, 209, 210, 211, 212, 213, 214, 215, | |
355 | 216, 217, 218, 219, 220, 221, 222, 223, | |
356 | 224, 225, 226, 227, 228, 229, 230, 231, | |
357 | 232, 233, 234, 235, 236, 237, 238, 239, | |
358 | 240, 241, 242, 243, 244, 245, 246, 247, | |
359 | 248, 249, 250, 251, 252, 253, 254, 255 | |
360 | }; | |
378cc40b LW |
361 | |
362 | static unsigned char freq[] = { | |
363 | 1, 2, 84, 151, 154, 155, 156, 157, | |
364 | 165, 246, 250, 3, 158, 7, 18, 29, | |
365 | 40, 51, 62, 73, 85, 96, 107, 118, | |
366 | 129, 140, 147, 148, 149, 150, 152, 153, | |
367 | 255, 182, 224, 205, 174, 176, 180, 217, | |
368 | 233, 232, 236, 187, 235, 228, 234, 226, | |
369 | 222, 219, 211, 195, 188, 193, 185, 184, | |
370 | 191, 183, 201, 229, 181, 220, 194, 162, | |
371 | 163, 208, 186, 202, 200, 218, 198, 179, | |
372 | 178, 214, 166, 170, 207, 199, 209, 206, | |
373 | 204, 160, 212, 216, 215, 192, 175, 173, | |
374 | 243, 172, 161, 190, 203, 189, 164, 230, | |
375 | 167, 248, 227, 244, 242, 255, 241, 231, | |
376 | 240, 253, 169, 210, 245, 237, 249, 247, | |
377 | 239, 168, 252, 251, 254, 238, 223, 221, | |
378 | 213, 225, 177, 197, 171, 196, 159, 4, | |
379 | 5, 6, 8, 9, 10, 11, 12, 13, | |
380 | 14, 15, 16, 17, 19, 20, 21, 22, | |
381 | 23, 24, 25, 26, 27, 28, 30, 31, | |
382 | 32, 33, 34, 35, 36, 37, 38, 39, | |
383 | 41, 42, 43, 44, 45, 46, 47, 48, | |
384 | 49, 50, 52, 53, 54, 55, 56, 57, | |
385 | 58, 59, 60, 61, 63, 64, 65, 66, | |
386 | 67, 68, 69, 70, 71, 72, 74, 75, | |
387 | 76, 77, 78, 79, 80, 81, 82, 83, | |
388 | 86, 87, 88, 89, 90, 91, 92, 93, | |
389 | 94, 95, 97, 98, 99, 100, 101, 102, | |
390 | 103, 104, 105, 106, 108, 109, 110, 111, | |
391 | 112, 113, 114, 115, 116, 117, 119, 120, | |
392 | 121, 122, 123, 124, 125, 126, 127, 128, | |
393 | 130, 131, 132, 133, 134, 135, 136, 137, | |
394 | 138, 139, 141, 142, 143, 144, 145, 146 | |
395 | }; | |
8d063cd8 | 396 | |
378cc40b | 397 | void |
a687059c | 398 | fbmcompile(str, iflag) |
378cc40b | 399 | STR *str; |
a687059c | 400 | int iflag; |
378cc40b | 401 | { |
a687059c LW |
402 | register unsigned char *s; |
403 | register unsigned char *table; | |
378cc40b LW |
404 | register int i; |
405 | register int len = str->str_cur; | |
406 | int rarest = 0; | |
407 | int frequency = 256; | |
408 | ||
a687059c LW |
409 | str_grow(str,len+258); |
410 | #ifndef lint | |
411 | table = (unsigned char*)(str->str_ptr + len + 1); | |
412 | #else | |
413 | table = Null(unsigned char*); | |
414 | #endif | |
415 | s = table - 2; | |
416 | for (i = 0; i < 256; i++) { | |
378cc40b LW |
417 | table[i] = len; |
418 | } | |
419 | i = 0; | |
a687059c LW |
420 | #ifndef lint |
421 | while (s >= (unsigned char*)(str->str_ptr)) | |
422 | #endif | |
423 | { | |
424 | if (table[*s] == len) { | |
425 | #ifndef pdp11 | |
426 | if (iflag) | |
427 | table[*s] = table[fold[*s]] = i; | |
428 | #else | |
429 | if (iflag) { | |
430 | int j; | |
431 | j = fold[*s]; | |
432 | table[j] = i; | |
433 | table[*s] = i; | |
434 | } | |
435 | #endif /* pdp11 */ | |
436 | else | |
437 | table[*s] = i; | |
438 | } | |
378cc40b LW |
439 | s--,i++; |
440 | } | |
a687059c | 441 | str->str_pok |= SP_FBM; /* deep magic */ |
378cc40b | 442 | |
a687059c LW |
443 | #ifndef lint |
444 | s = (unsigned char*)(str->str_ptr); /* deeper magic */ | |
445 | #else | |
446 | s = Null(unsigned char*); | |
447 | #endif | |
448 | if (iflag) { | |
449 | register int tmp, foldtmp; | |
450 | str->str_pok |= SP_CASEFOLD; | |
451 | for (i = 0; i < len; i++) { | |
452 | tmp=freq[s[i]]; | |
453 | foldtmp=freq[fold[s[i]]]; | |
454 | if (tmp < frequency && foldtmp < frequency) { | |
455 | rarest = i; | |
456 | /* choose most frequent among the two */ | |
457 | frequency = (tmp > foldtmp) ? tmp : foldtmp; | |
458 | } | |
459 | } | |
460 | } | |
461 | else { | |
462 | for (i = 0; i < len; i++) { | |
463 | if (freq[s[i]] < frequency) { | |
464 | rarest = i; | |
465 | frequency = freq[s[i]]; | |
466 | } | |
378cc40b LW |
467 | } |
468 | } | |
469 | str->str_rare = s[rarest]; | |
a687059c | 470 | str->str_state = rarest; |
378cc40b LW |
471 | #ifdef DEBUGGING |
472 | if (debug & 512) | |
a687059c | 473 | fprintf(stderr,"rarest char %c at %d\n",str->str_rare, str->str_state); |
378cc40b LW |
474 | #endif |
475 | } | |
476 | ||
378cc40b LW |
477 | char * |
478 | fbminstr(big, bigend, littlestr) | |
a687059c LW |
479 | unsigned char *big; |
480 | register unsigned char *bigend; | |
378cc40b LW |
481 | STR *littlestr; |
482 | { | |
a687059c | 483 | register unsigned char *s; |
378cc40b LW |
484 | register int tmp; |
485 | register int littlelen; | |
a687059c LW |
486 | register unsigned char *little; |
487 | register unsigned char *table; | |
488 | register unsigned char *olds; | |
489 | register unsigned char *oldlittle; | |
378cc40b | 490 | |
a687059c LW |
491 | #ifndef lint |
492 | if (!(littlestr->str_pok & SP_FBM)) | |
9f68db38 LW |
493 | return ninstr((char*)big,(char*)bigend, |
494 | littlestr->str_ptr, littlestr->str_ptr + littlestr->str_cur); | |
a687059c | 495 | #endif |
378cc40b LW |
496 | |
497 | littlelen = littlestr->str_cur; | |
a687059c LW |
498 | #ifndef lint |
499 | if (littlestr->str_pok & SP_TAIL && !multiline) { /* tail anchored? */ | |
0f85fab0 LW |
500 | if (littlelen > bigend - big) |
501 | return Nullch; | |
a687059c LW |
502 | little = (unsigned char*)littlestr->str_ptr; |
503 | if (littlestr->str_pok & SP_CASEFOLD) { /* oops, fake it */ | |
504 | big = bigend - littlelen; /* just start near end */ | |
505 | if (bigend[-1] == '\n' && little[littlelen-1] != '\n') | |
506 | big--; | |
378cc40b LW |
507 | } |
508 | else { | |
a687059c LW |
509 | s = bigend - littlelen; |
510 | if (*s == *little && bcmp(s,little,littlelen)==0) | |
511 | return (char*)s; /* how sweet it is */ | |
512 | else if (bigend[-1] == '\n' && little[littlelen-1] != '\n') { | |
513 | s--; | |
514 | if (*s == *little && bcmp(s,little,littlelen)==0) | |
515 | return (char*)s; | |
516 | } | |
517 | return Nullch; | |
518 | } | |
519 | } | |
520 | table = (unsigned char*)(littlestr->str_ptr + littlelen + 1); | |
521 | #else | |
522 | table = Null(unsigned char*); | |
523 | #endif | |
524 | s = big + --littlelen; | |
525 | oldlittle = little = table - 2; | |
526 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insensitive? */ | |
527 | while (s < bigend) { | |
528 | top1: | |
529 | if (tmp = table[*s]) { | |
530 | s += tmp; | |
531 | } | |
532 | else { | |
533 | tmp = littlelen; /* less expensive than calling strncmp() */ | |
534 | olds = s; | |
535 | while (tmp--) { | |
536 | if (*--s == *--little || fold[*s] == *little) | |
537 | continue; | |
538 | s = olds + 1; /* here we pay the price for failure */ | |
539 | little = oldlittle; | |
540 | if (s < bigend) /* fake up continue to outer loop */ | |
541 | goto top1; | |
542 | return Nullch; | |
543 | } | |
544 | #ifndef lint | |
545 | return (char *)s; | |
546 | #endif | |
547 | } | |
548 | } | |
549 | } | |
550 | else { | |
551 | while (s < bigend) { | |
552 | top2: | |
553 | if (tmp = table[*s]) { | |
554 | s += tmp; | |
555 | } | |
556 | else { | |
557 | tmp = littlelen; /* less expensive than calling strncmp() */ | |
558 | olds = s; | |
559 | while (tmp--) { | |
560 | if (*--s == *--little) | |
561 | continue; | |
562 | s = olds + 1; /* here we pay the price for failure */ | |
563 | little = oldlittle; | |
564 | if (s < bigend) /* fake up continue to outer loop */ | |
565 | goto top2; | |
566 | return Nullch; | |
567 | } | |
568 | #ifndef lint | |
569 | return (char *)s; | |
570 | #endif | |
378cc40b | 571 | } |
378cc40b LW |
572 | } |
573 | } | |
574 | return Nullch; | |
575 | } | |
576 | ||
577 | char * | |
578 | screaminstr(bigstr, littlestr) | |
579 | STR *bigstr; | |
580 | STR *littlestr; | |
581 | { | |
a687059c LW |
582 | register unsigned char *s, *x; |
583 | register unsigned char *big; | |
378cc40b LW |
584 | register int pos; |
585 | register int previous; | |
586 | register int first; | |
a687059c LW |
587 | register unsigned char *little; |
588 | register unsigned char *bigend; | |
589 | register unsigned char *littleend; | |
378cc40b LW |
590 | |
591 | if ((pos = screamfirst[littlestr->str_rare]) < 0) | |
592 | return Nullch; | |
a687059c LW |
593 | #ifndef lint |
594 | little = (unsigned char *)(littlestr->str_ptr); | |
595 | #else | |
596 | little = Null(unsigned char *); | |
597 | #endif | |
598 | littleend = little + littlestr->str_cur; | |
378cc40b | 599 | first = *little++; |
a687059c LW |
600 | previous = littlestr->str_state; |
601 | #ifndef lint | |
602 | big = (unsigned char *)(bigstr->str_ptr); | |
603 | #else | |
604 | big = Null(unsigned char*); | |
605 | #endif | |
606 | bigend = big + bigstr->str_cur; | |
378cc40b LW |
607 | big -= previous; |
608 | while (pos < previous) { | |
a687059c | 609 | #ifndef lint |
378cc40b | 610 | if (!(pos += screamnext[pos])) |
a687059c | 611 | #endif |
378cc40b LW |
612 | return Nullch; |
613 | } | |
a687059c LW |
614 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insignificant? */ |
615 | do { | |
616 | if (big[pos] != first && big[pos] != fold[first]) | |
617 | continue; | |
618 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { | |
619 | if (x >= bigend) | |
620 | return Nullch; | |
621 | if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) { | |
622 | s--; | |
623 | break; | |
624 | } | |
625 | } | |
626 | if (s == littleend) | |
627 | #ifndef lint | |
628 | return (char *)(big+pos); | |
629 | #else | |
8d063cd8 | 630 | return Nullch; |
a687059c LW |
631 | #endif |
632 | } while ( | |
633 | #ifndef lint | |
634 | pos += screamnext[pos] /* does this goof up anywhere? */ | |
635 | #else | |
636 | pos += screamnext[0] | |
637 | #endif | |
638 | ); | |
639 | } | |
640 | else { | |
641 | do { | |
642 | if (big[pos] != first) | |
643 | continue; | |
644 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { | |
645 | if (x >= bigend) | |
646 | return Nullch; | |
647 | if (*s++ != *x++) { | |
648 | s--; | |
649 | break; | |
650 | } | |
378cc40b | 651 | } |
a687059c LW |
652 | if (s == littleend) |
653 | #ifndef lint | |
654 | return (char *)(big+pos); | |
655 | #else | |
656 | return Nullch; | |
657 | #endif | |
658 | } while ( | |
659 | #ifndef lint | |
660 | pos += screamnext[pos] | |
661 | #else | |
662 | pos += screamnext[0] | |
663 | #endif | |
664 | ); | |
665 | } | |
8d063cd8 LW |
666 | return Nullch; |
667 | } | |
668 | ||
669 | /* copy a string to a safe spot */ | |
670 | ||
671 | char * | |
672 | savestr(str) | |
673 | char *str; | |
674 | { | |
a687059c | 675 | register char *newaddr; |
8d063cd8 | 676 | |
a687059c | 677 | New(902,newaddr,strlen(str)+1,char); |
8d063cd8 LW |
678 | (void)strcpy(newaddr,str); |
679 | return newaddr; | |
680 | } | |
681 | ||
a687059c LW |
682 | /* same thing but with a known length */ |
683 | ||
684 | char * | |
685 | nsavestr(str, len) | |
686 | char *str; | |
687 | register int len; | |
688 | { | |
689 | register char *newaddr; | |
690 | ||
691 | New(903,newaddr,len+1,char); | |
692 | (void)bcopy(str,newaddr,len); /* might not be null terminated */ | |
693 | newaddr[len] = '\0'; /* is now */ | |
694 | return newaddr; | |
695 | } | |
696 | ||
8d063cd8 LW |
697 | /* grow a static string to at least a certain length */ |
698 | ||
699 | void | |
700 | growstr(strptr,curlen,newlen) | |
701 | char **strptr; | |
702 | int *curlen; | |
703 | int newlen; | |
704 | { | |
705 | if (newlen > *curlen) { /* need more room? */ | |
706 | if (*curlen) | |
a687059c | 707 | Renew(*strptr,newlen,char); |
8d063cd8 | 708 | else |
a687059c | 709 | New(905,*strptr,newlen,char); |
8d063cd8 LW |
710 | *curlen = newlen; |
711 | } | |
712 | } | |
713 | ||
a687059c | 714 | #ifndef VARARGS |
378cc40b LW |
715 | /*VARARGS1*/ |
716 | mess(pat,a1,a2,a3,a4) | |
717 | char *pat; | |
a687059c | 718 | long a1, a2, a3, a4; |
378cc40b LW |
719 | { |
720 | char *s; | |
721 | ||
a687059c LW |
722 | s = buf; |
723 | (void)sprintf(s,pat,a1,a2,a3,a4); | |
378cc40b LW |
724 | s += strlen(s); |
725 | if (s[-1] != '\n') { | |
726 | if (line) { | |
a687059c | 727 | (void)sprintf(s," at %s line %ld", |
378cc40b LW |
728 | in_eval?filename:origfilename, (long)line); |
729 | s += strlen(s); | |
730 | } | |
731 | if (last_in_stab && | |
a687059c LW |
732 | stab_io(last_in_stab) && |
733 | stab_io(last_in_stab)->lines ) { | |
734 | (void)sprintf(s,", <%s> line %ld", | |
735 | last_in_stab == argvstab ? "" : stab_name(last_in_stab), | |
736 | (long)stab_io(last_in_stab)->lines); | |
378cc40b LW |
737 | s += strlen(s); |
738 | } | |
a687059c | 739 | (void)strcpy(s,".\n"); |
378cc40b LW |
740 | } |
741 | } | |
742 | ||
8d063cd8 LW |
743 | /*VARARGS1*/ |
744 | fatal(pat,a1,a2,a3,a4) | |
745 | char *pat; | |
a687059c | 746 | long a1, a2, a3, a4; |
8d063cd8 LW |
747 | { |
748 | extern FILE *e_fp; | |
749 | extern char *e_tmpname; | |
9f68db38 | 750 | char *tmps; |
8d063cd8 | 751 | |
378cc40b | 752 | mess(pat,a1,a2,a3,a4); |
a559c259 | 753 | if (in_eval) { |
a687059c | 754 | str_set(stab_val(stabent("@",TRUE)),buf); |
9f68db38 LW |
755 | tmps = "_EVAL_"; |
756 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || | |
757 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { | |
758 | #ifdef DEBUGGING | |
759 | if (debug & 4) { | |
760 | deb("(Skipping label #%d %s)\n",loop_ptr, | |
761 | loop_stack[loop_ptr].loop_label); | |
762 | } | |
763 | #endif | |
764 | loop_ptr--; | |
765 | } | |
766 | #ifdef DEBUGGING | |
767 | if (debug & 4) { | |
768 | deb("(Found label #%d %s)\n",loop_ptr, | |
769 | loop_stack[loop_ptr].loop_label); | |
770 | } | |
771 | #endif | |
772 | if (loop_ptr < 0) { | |
773 | in_eval = 0; | |
774 | fatal("Bad label: %s", tmps); | |
775 | } | |
776 | longjmp(loop_stack[loop_ptr].loop_env, 1); | |
a559c259 | 777 | } |
a687059c LW |
778 | fputs(buf,stderr); |
779 | (void)fflush(stderr); | |
8d063cd8 | 780 | if (e_fp) |
a687059c | 781 | (void)UNLINK(e_tmpname); |
378cc40b LW |
782 | statusvalue >>= 8; |
783 | exit(errno?errno:(statusvalue?statusvalue:255)); | |
784 | } | |
785 | ||
786 | /*VARARGS1*/ | |
787 | warn(pat,a1,a2,a3,a4) | |
788 | char *pat; | |
a687059c | 789 | long a1, a2, a3, a4; |
378cc40b LW |
790 | { |
791 | mess(pat,a1,a2,a3,a4); | |
a687059c LW |
792 | fputs(buf,stderr); |
793 | #ifdef LEAKTEST | |
794 | #ifdef DEBUGGING | |
795 | if (debug & 4096) | |
796 | xstat(); | |
797 | #endif | |
798 | #endif | |
799 | (void)fflush(stderr); | |
8d063cd8 | 800 | } |
a687059c LW |
801 | #else |
802 | /*VARARGS0*/ | |
803 | mess(args) | |
804 | va_list args; | |
805 | { | |
806 | char *pat; | |
807 | char *s; | |
808 | #ifdef CHARVSPRINTF | |
809 | char *vsprintf(); | |
810 | #else | |
811 | int vsprintf(); | |
812 | #endif | |
813 | ||
814 | s = buf; | |
815 | #ifdef lint | |
816 | pat = Nullch; | |
817 | #else | |
818 | pat = va_arg(args, char *); | |
819 | #endif | |
820 | (void) vsprintf(s,pat,args); | |
821 | ||
822 | s += strlen(s); | |
823 | if (s[-1] != '\n') { | |
824 | if (line) { | |
825 | (void)sprintf(s," at %s line %ld", | |
826 | in_eval?filename:origfilename, (long)line); | |
827 | s += strlen(s); | |
828 | } | |
829 | if (last_in_stab && | |
830 | stab_io(last_in_stab) && | |
831 | stab_io(last_in_stab)->lines ) { | |
832 | (void)sprintf(s,", <%s> line %ld", | |
833 | last_in_stab == argvstab ? "" : last_in_stab->str_magic->str_ptr, | |
834 | (long)stab_io(last_in_stab)->lines); | |
835 | s += strlen(s); | |
836 | } | |
837 | (void)strcpy(s,".\n"); | |
838 | } | |
839 | } | |
840 | ||
841 | /*VARARGS0*/ | |
842 | fatal(va_alist) | |
843 | va_dcl | |
844 | { | |
845 | va_list args; | |
846 | extern FILE *e_fp; | |
847 | extern char *e_tmpname; | |
9f68db38 | 848 | char *tmps; |
a687059c LW |
849 | |
850 | #ifndef lint | |
851 | va_start(args); | |
852 | #else | |
853 | args = 0; | |
854 | #endif | |
855 | mess(args); | |
856 | va_end(args); | |
857 | if (in_eval) { | |
858 | str_set(stab_val(stabent("@",TRUE)),buf); | |
9f68db38 LW |
859 | tmps = "_EVAL_"; |
860 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || | |
861 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { | |
862 | #ifdef DEBUGGING | |
863 | if (debug & 4) { | |
864 | deb("(Skipping label #%d %s)\n",loop_ptr, | |
865 | loop_stack[loop_ptr].loop_label); | |
866 | } | |
867 | #endif | |
868 | loop_ptr--; | |
869 | } | |
870 | #ifdef DEBUGGING | |
871 | if (debug & 4) { | |
872 | deb("(Found label #%d %s)\n",loop_ptr, | |
873 | loop_stack[loop_ptr].loop_label); | |
874 | } | |
875 | #endif | |
876 | if (loop_ptr < 0) { | |
877 | in_eval = 0; | |
878 | fatal("Bad label: %s", tmps); | |
879 | } | |
880 | longjmp(loop_stack[loop_ptr].loop_env, 1); | |
a687059c LW |
881 | } |
882 | fputs(buf,stderr); | |
883 | (void)fflush(stderr); | |
884 | if (e_fp) | |
885 | (void)UNLINK(e_tmpname); | |
886 | statusvalue >>= 8; | |
887 | exit((int)(errno?errno:(statusvalue?statusvalue:255))); | |
888 | } | |
889 | ||
890 | /*VARARGS0*/ | |
891 | warn(va_alist) | |
892 | va_dcl | |
893 | { | |
894 | va_list args; | |
895 | ||
896 | #ifndef lint | |
897 | va_start(args); | |
898 | #else | |
899 | args = 0; | |
900 | #endif | |
901 | mess(args); | |
902 | va_end(args); | |
903 | ||
904 | fputs(buf,stderr); | |
905 | #ifdef LEAKTEST | |
906 | #ifdef DEBUGGING | |
907 | if (debug & 4096) | |
908 | xstat(); | |
909 | #endif | |
910 | #endif | |
911 | (void)fflush(stderr); | |
912 | } | |
913 | #endif | |
8d063cd8 LW |
914 | |
915 | static bool firstsetenv = TRUE; | |
916 | extern char **environ; | |
917 | ||
918 | void | |
919 | setenv(nam,val) | |
920 | char *nam, *val; | |
921 | { | |
922 | register int i=envix(nam); /* where does it go? */ | |
923 | ||
a687059c LW |
924 | if (!val) { |
925 | while (environ[i]) { | |
926 | environ[i] = environ[i+1]; | |
927 | i++; | |
928 | } | |
929 | return; | |
930 | } | |
8d063cd8 LW |
931 | if (!environ[i]) { /* does not exist yet */ |
932 | if (firstsetenv) { /* need we copy environment? */ | |
933 | int j; | |
a687059c LW |
934 | char **tmpenv; |
935 | ||
936 | New(901,tmpenv, i+2, char*); | |
8d063cd8 LW |
937 | firstsetenv = FALSE; |
938 | for (j=0; j<i; j++) /* copy environment */ | |
939 | tmpenv[j] = environ[j]; | |
940 | environ = tmpenv; /* tell exec where it is now */ | |
941 | } | |
8d063cd8 | 942 | else |
a687059c | 943 | Renew(environ, i+2, char*); /* just expand it a bit */ |
8d063cd8 LW |
944 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
945 | } | |
a687059c | 946 | New(904, environ[i], strlen(nam) + strlen(val) + 2, char); |
8d063cd8 LW |
947 | /* this may or may not be in */ |
948 | /* the old environ structure */ | |
a687059c | 949 | (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */ |
8d063cd8 LW |
950 | } |
951 | ||
952 | int | |
953 | envix(nam) | |
954 | char *nam; | |
955 | { | |
956 | register int i, len = strlen(nam); | |
957 | ||
958 | for (i = 0; environ[i]; i++) { | |
959 | if (strnEQ(environ[i],nam,len) && environ[i][len] == '=') | |
960 | break; /* strnEQ must come first to avoid */ | |
961 | } /* potential SEGV's */ | |
962 | return i; | |
963 | } | |
378cc40b LW |
964 | |
965 | #ifdef EUNICE | |
966 | unlnk(f) /* unlink all versions of a file */ | |
967 | char *f; | |
968 | { | |
969 | int i; | |
970 | ||
971 | for (i = 0; unlink(f) >= 0; i++) ; | |
972 | return i ? 0 : -1; | |
973 | } | |
974 | #endif | |
975 | ||
378cc40b | 976 | #ifndef MEMCPY |
ffed7fef | 977 | #ifndef BCOPY |
378cc40b LW |
978 | char * |
979 | bcopy(from,to,len) | |
980 | register char *from; | |
981 | register char *to; | |
982 | register int len; | |
983 | { | |
984 | char *retval = to; | |
985 | ||
986 | while (len--) | |
987 | *to++ = *from++; | |
988 | return retval; | |
989 | } | |
ffed7fef | 990 | #endif |
378cc40b | 991 | |
ffed7fef | 992 | #ifndef BZERO |
378cc40b LW |
993 | char * |
994 | bzero(loc,len) | |
995 | register char *loc; | |
996 | register int len; | |
997 | { | |
998 | char *retval = loc; | |
999 | ||
1000 | while (len--) | |
1001 | *loc++ = 0; | |
1002 | return retval; | |
1003 | } | |
1004 | #endif | |
1005 | #endif | |
a687059c LW |
1006 | |
1007 | #ifdef VARARGS | |
1008 | #ifndef VPRINTF | |
1009 | ||
1010 | #ifdef CHARVSPRINTF | |
1011 | char * | |
1012 | #else | |
1013 | int | |
1014 | #endif | |
1015 | vsprintf(dest, pat, args) | |
1016 | char *dest, *pat, *args; | |
1017 | { | |
1018 | FILE fakebuf; | |
1019 | ||
1020 | fakebuf._ptr = dest; | |
1021 | fakebuf._cnt = 32767; | |
1022 | fakebuf._flag = _IOWRT|_IOSTRG; | |
1023 | _doprnt(pat, args, &fakebuf); /* what a kludge */ | |
1024 | (void)putc('\0', &fakebuf); | |
1025 | #ifdef CHARVSPRINTF | |
1026 | return(dest); | |
1027 | #else | |
1028 | return 0; /* perl doesn't use return value */ | |
1029 | #endif | |
1030 | } | |
1031 | ||
1032 | #ifdef DEBUGGING | |
1033 | int | |
1034 | vfprintf(fd, pat, args) | |
1035 | FILE *fd; | |
1036 | char *pat, *args; | |
1037 | { | |
1038 | _doprnt(pat, args, fd); | |
1039 | return 0; /* wrong, but perl doesn't use the return value */ | |
1040 | } | |
1041 | #endif | |
1042 | #endif /* VPRINTF */ | |
1043 | #endif /* VARARGS */ | |
1044 | ||
1045 | #ifdef MYSWAP | |
ffed7fef | 1046 | #if BYTEORDER != 0x4321 |
a687059c LW |
1047 | short |
1048 | my_swap(s) | |
1049 | short s; | |
1050 | { | |
1051 | #if (BYTEORDER & 1) == 0 | |
1052 | short result; | |
1053 | ||
1054 | result = ((s & 255) << 8) + ((s >> 8) & 255); | |
1055 | return result; | |
1056 | #else | |
1057 | return s; | |
1058 | #endif | |
1059 | } | |
1060 | ||
1061 | long | |
1062 | htonl(l) | |
1063 | register long l; | |
1064 | { | |
1065 | union { | |
1066 | long result; | |
ffed7fef | 1067 | char c[sizeof(long)]; |
a687059c LW |
1068 | } u; |
1069 | ||
ffed7fef | 1070 | #if BYTEORDER == 0x1234 |
a687059c LW |
1071 | u.c[0] = (l >> 24) & 255; |
1072 | u.c[1] = (l >> 16) & 255; | |
1073 | u.c[2] = (l >> 8) & 255; | |
1074 | u.c[3] = l & 255; | |
1075 | return u.result; | |
1076 | #else | |
ffed7fef | 1077 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
a687059c LW |
1078 | fatal("Unknown BYTEORDER\n"); |
1079 | #else | |
1080 | register int o; | |
1081 | register int s; | |
1082 | ||
ffed7fef LW |
1083 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1084 | u.c[o & 0xf] = (l >> s) & 255; | |
a687059c LW |
1085 | } |
1086 | return u.result; | |
1087 | #endif | |
1088 | #endif | |
1089 | } | |
1090 | ||
1091 | long | |
1092 | ntohl(l) | |
1093 | register long l; | |
1094 | { | |
1095 | union { | |
1096 | long l; | |
ffed7fef | 1097 | char c[sizeof(long)]; |
a687059c LW |
1098 | } u; |
1099 | ||
ffed7fef | 1100 | #if BYTEORDER == 0x1234 |
a687059c LW |
1101 | u.c[0] = (l >> 24) & 255; |
1102 | u.c[1] = (l >> 16) & 255; | |
1103 | u.c[2] = (l >> 8) & 255; | |
1104 | u.c[3] = l & 255; | |
1105 | return u.l; | |
1106 | #else | |
ffed7fef | 1107 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
a687059c LW |
1108 | fatal("Unknown BYTEORDER\n"); |
1109 | #else | |
1110 | register int o; | |
1111 | register int s; | |
1112 | ||
1113 | u.l = l; | |
1114 | l = 0; | |
ffed7fef LW |
1115 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1116 | l |= (u.c[o & 0xf] & 255) << s; | |
a687059c LW |
1117 | } |
1118 | return l; | |
1119 | #endif | |
1120 | #endif | |
1121 | } | |
1122 | ||
ffed7fef | 1123 | #endif /* BYTEORDER != 0x4321 */ |
a687059c LW |
1124 | #endif /* HTONS */ |
1125 | ||
0f85fab0 | 1126 | #ifndef MSDOS |
a687059c LW |
1127 | FILE * |
1128 | mypopen(cmd,mode) | |
1129 | char *cmd; | |
1130 | char *mode; | |
1131 | { | |
1132 | int p[2]; | |
1133 | register int this, that; | |
1134 | register int pid; | |
1135 | STR *str; | |
1136 | int doexec = strNE(cmd,"-"); | |
1137 | ||
1138 | if (pipe(p) < 0) | |
1139 | return Nullfp; | |
1140 | this = (*mode == 'w'); | |
1141 | that = !this; | |
1142 | while ((pid = (doexec?vfork():fork())) < 0) { | |
1143 | if (errno != EAGAIN) { | |
1144 | close(p[this]); | |
1145 | if (!doexec) | |
1146 | fatal("Can't fork"); | |
1147 | return Nullfp; | |
1148 | } | |
1149 | sleep(5); | |
1150 | } | |
1151 | if (pid == 0) { | |
1152 | #define THIS that | |
1153 | #define THAT this | |
1154 | close(p[THAT]); | |
1155 | if (p[THIS] != (*mode == 'r')) { | |
1156 | dup2(p[THIS], *mode == 'r'); | |
1157 | close(p[THIS]); | |
1158 | } | |
1159 | if (doexec) { | |
ae986130 LW |
1160 | #if !defined(FCNTL) || !defined(F_SETFD) |
1161 | int fd; | |
1162 | ||
1163 | #ifndef NOFILE | |
1164 | #define NOFILE 20 | |
1165 | #endif | |
1166 | for (fd = 3; fd < NOFILE; fd++) | |
1167 | close(fd); | |
1168 | #endif | |
a687059c LW |
1169 | do_exec(cmd); /* may or may not use the shell */ |
1170 | _exit(1); | |
1171 | } | |
1172 | if (tmpstab = stabent("$",allstabs)) | |
1173 | str_numset(STAB_STR(tmpstab),(double)getpid()); | |
9f68db38 | 1174 | forkprocess = 0; |
a687059c LW |
1175 | return Nullfp; |
1176 | #undef THIS | |
1177 | #undef THAT | |
1178 | } | |
1179 | close(p[that]); | |
1180 | str = afetch(pidstatary,p[this],TRUE); | |
1181 | str_numset(str,(double)pid); | |
1182 | str->str_cur = 0; | |
1183 | forkprocess = pid; | |
1184 | return fdopen(p[this], mode); | |
1185 | } | |
0f85fab0 | 1186 | #endif /* !MSDOS */ |
a687059c | 1187 | |
ae986130 LW |
1188 | #ifdef NOTDEF |
1189 | dumpfds(s) | |
1190 | char *s; | |
1191 | { | |
1192 | int fd; | |
1193 | struct stat tmpstatbuf; | |
1194 | ||
1195 | fprintf(stderr,"%s", s); | |
1196 | for (fd = 0; fd < 32; fd++) { | |
1197 | if (fstat(fd,&tmpstatbuf) >= 0) | |
1198 | fprintf(stderr," %d",fd); | |
1199 | } | |
1200 | fprintf(stderr,"\n"); | |
1201 | } | |
1202 | #endif | |
1203 | ||
a687059c LW |
1204 | #ifndef DUP2 |
1205 | dup2(oldfd,newfd) | |
1206 | int oldfd; | |
1207 | int newfd; | |
1208 | { | |
ae986130 LW |
1209 | int fdtmp[10]; |
1210 | int fdx = 0; | |
1211 | int fd; | |
1212 | ||
a687059c | 1213 | close(newfd); |
ae986130 LW |
1214 | while ((fd = dup(oldfd)) != newfd) /* good enough for low fd's */ |
1215 | fdtmp[fdx++] = fd; | |
1216 | while (fdx > 0) | |
1217 | close(fdtmp[--fdx]); | |
a687059c LW |
1218 | } |
1219 | #endif | |
1220 | ||
0f85fab0 | 1221 | #ifndef MSDOS |
a687059c LW |
1222 | int |
1223 | mypclose(ptr) | |
1224 | FILE *ptr; | |
1225 | { | |
1226 | register int result; | |
1227 | #ifdef VOIDSIG | |
1228 | void (*hstat)(), (*istat)(), (*qstat)(); | |
1229 | #else | |
1230 | int (*hstat)(), (*istat)(), (*qstat)(); | |
1231 | #endif | |
1232 | int status; | |
1233 | STR *str; | |
1234 | register int pid; | |
1235 | ||
1236 | str = afetch(pidstatary,fileno(ptr),TRUE); | |
1237 | fclose(ptr); | |
1238 | pid = (int)str_gnum(str); | |
1239 | if (!pid) | |
1240 | return -1; | |
1241 | hstat = signal(SIGHUP, SIG_IGN); | |
1242 | istat = signal(SIGINT, SIG_IGN); | |
1243 | qstat = signal(SIGQUIT, SIG_IGN); | |
1244 | #ifdef WAIT4 | |
1245 | if (wait4(pid,&status,0,Null(struct rusage *)) < 0) | |
1246 | status = -1; | |
1247 | #else | |
1248 | if (pid < 0) /* already exited? */ | |
1249 | status = str->str_cur; | |
1250 | else { | |
1251 | while ((result = wait(&status)) != pid && result >= 0) | |
1252 | pidgone(result,status); | |
1253 | if (result < 0) | |
1254 | status = -1; | |
1255 | } | |
1256 | #endif | |
1257 | signal(SIGHUP, hstat); | |
1258 | signal(SIGINT, istat); | |
1259 | signal(SIGQUIT, qstat); | |
1260 | str_numset(str,0.0); | |
1261 | return(status); | |
1262 | } | |
0f85fab0 | 1263 | #endif /* !MSDOS */ |
a687059c LW |
1264 | |
1265 | pidgone(pid,status) | |
1266 | int pid; | |
1267 | int status; | |
1268 | { | |
1269 | #ifdef WAIT4 | |
1270 | return; | |
1271 | #else | |
1272 | register int count; | |
1273 | register STR *str; | |
1274 | ||
1275 | for (count = pidstatary->ary_fill; count >= 0; --count) { | |
1276 | if ((str = afetch(pidstatary,count,FALSE)) && | |
1277 | ((int)str->str_u.str_nval) == pid) { | |
1278 | str_numset(str, -str->str_u.str_nval); | |
1279 | str->str_cur = status; | |
1280 | return; | |
1281 | } | |
1282 | } | |
1283 | #endif | |
1284 | } | |
1285 | ||
1286 | #ifndef MEMCMP | |
1287 | memcmp(s1,s2,len) | |
1288 | register unsigned char *s1; | |
1289 | register unsigned char *s2; | |
1290 | register int len; | |
1291 | { | |
1292 | register int tmp; | |
1293 | ||
1294 | while (len--) { | |
1295 | if (tmp = *s1++ - *s2++) | |
1296 | return tmp; | |
1297 | } | |
1298 | return 0; | |
1299 | } | |
1300 | #endif /* MEMCMP */ | |
9f68db38 LW |
1301 | |
1302 | void | |
1303 | repeatcpy(to,from,len,count) | |
1304 | register char *to; | |
1305 | register char *from; | |
1306 | int len; | |
1307 | register int count; | |
1308 | { | |
1309 | register int todo; | |
1310 | register char *frombase = from; | |
1311 | ||
1312 | if (len == 1) { | |
1313 | todo = *from; | |
1314 | while (count-- > 0) | |
1315 | *to++ = todo; | |
1316 | return; | |
1317 | } | |
1318 | while (count-- > 0) { | |
1319 | for (todo = len; todo > 0; todo--) { | |
1320 | *to++ = *from++; | |
1321 | } | |
1322 | from = frombase; | |
1323 | } | |
1324 | } | |
0f85fab0 LW |
1325 | |
1326 | #ifndef CASTNEGFLOAT | |
1327 | unsigned long | |
1328 | castulong(f) | |
1329 | double f; | |
1330 | { | |
1331 | long along; | |
1332 | ||
1333 | if (f >= 0.0) | |
1334 | return (unsigned long)f; | |
1335 | along = (long)f; | |
1336 | return (unsigned long)along; | |
1337 | } | |
1338 | #endif |