Commit | Line | Data |
---|---|---|
27e2fb84 | 1 | /* $Header: util.c,v 3.0.1.11 91/01/11 18:33:10 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 $ | |
27e2fb84 LW |
9 | * Revision 3.0.1.11 91/01/11 18:33:10 lwall |
10 | * patch42: die could exit with 0 value on some machines | |
11 | * patch42: Configure checks typecasting behavior better | |
12 | * | |
34de22dd LW |
13 | * Revision 3.0.1.10 90/11/10 02:19:28 lwall |
14 | * patch38: random cleanup | |
15 | * patch38: sequence of s/^x//; s/x$//; could screw up malloc | |
16 | * | |
e5d73d77 LW |
17 | * Revision 3.0.1.9 90/10/20 02:21:01 lwall |
18 | * patch37: tried to take strlen of integer on systems without wait4 or waitpid | |
19 | * patch37: unreachable return eliminated | |
20 | * | |
20188a90 LW |
21 | * Revision 3.0.1.8 90/10/16 11:26:57 lwall |
22 | * patch29: added waitpid | |
23 | * patch29: various portability fixes | |
24 | * patch29: scripts now run at almost full speed under the debugger | |
25 | * | |
6eb13c3b LW |
26 | * Revision 3.0.1.7 90/08/13 22:40:26 lwall |
27 | * patch28: the NSIG hack didn't work right on Xenix | |
28 | * patch28: rename was busted on systems without rename system call | |
29 | * | |
62b28dd9 LW |
30 | * Revision 3.0.1.6 90/08/09 05:44:55 lwall |
31 | * patch19: fixed double include of <signal.h> | |
32 | * patch19: various MSDOS and OS/2 patches folded in | |
33 | * patch19: open(STDOUT,"|command") left wrong descriptor attached to STDOUT | |
34 | * | |
0f85fab0 LW |
35 | * Revision 3.0.1.5 90/03/27 16:35:13 lwall |
36 | * patch16: MSDOS support | |
37 | * patch16: support for machines that can't cast negative floats to unsigned ints | |
38 | * patch16: tail anchored pattern could dump if string to search was shorter | |
39 | * | |
9f68db38 LW |
40 | * Revision 3.0.1.4 90/03/01 10:26:48 lwall |
41 | * patch9: fbminstr() called instr() rather than ninstr() | |
42 | * patch9: nested evals clobbered their longjmp environment | |
43 | * patch9: piped opens returned undefined rather than 0 in child | |
44 | * patch9: the x operator is now up to 10 times faster | |
45 | * | |
663a0e37 LW |
46 | * Revision 3.0.1.3 89/12/21 20:27:41 lwall |
47 | * patch7: errno may now be a macro with an lvalue | |
48 | * | |
ffed7fef LW |
49 | * Revision 3.0.1.2 89/11/17 15:46:35 lwall |
50 | * patch5: BZERO separate from BCOPY now | |
51 | * patch5: byteorder now is a hex value | |
52 | * | |
ae986130 LW |
53 | * Revision 3.0.1.1 89/11/11 05:06:13 lwall |
54 | * patch2: made dup2 a little better | |
55 | * | |
a687059c LW |
56 | * Revision 3.0 89/10/18 15:32:43 lwall |
57 | * 3.0 baseline | |
8d063cd8 LW |
58 | * |
59 | */ | |
60 | ||
8d063cd8 | 61 | #include "EXTERN.h" |
8d063cd8 | 62 | #include "perl.h" |
62b28dd9 | 63 | |
6eb13c3b | 64 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
a687059c | 65 | #include <signal.h> |
62b28dd9 | 66 | #endif |
a687059c LW |
67 | |
68 | #ifdef I_VFORK | |
69 | # include <vfork.h> | |
70 | #endif | |
71 | ||
72 | #ifdef I_VARARGS | |
73 | # include <varargs.h> | |
74 | #endif | |
8d063cd8 LW |
75 | |
76 | #define FLUSH | |
8d063cd8 LW |
77 | |
78 | static char nomem[] = "Out of memory!\n"; | |
79 | ||
80 | /* paranoid version of malloc */ | |
81 | ||
378cc40b | 82 | #ifdef DEBUGGING |
8d063cd8 | 83 | static int an = 0; |
378cc40b | 84 | #endif |
8d063cd8 | 85 | |
a687059c LW |
86 | /* NOTE: Do not call the next three routines directly. Use the macros |
87 | * in handy.h, so that we can easily redefine everything to do tracking of | |
88 | * allocated hunks back to the original New to track down any memory leaks. | |
89 | */ | |
90 | ||
8d063cd8 LW |
91 | char * |
92 | safemalloc(size) | |
62b28dd9 LW |
93 | #ifdef MSDOS |
94 | unsigned long size; | |
95 | #else | |
8d063cd8 | 96 | MEM_SIZE size; |
62b28dd9 | 97 | #endif /* MSDOS */ |
8d063cd8 LW |
98 | { |
99 | char *ptr; | |
100 | char *malloc(); | |
101 | ||
62b28dd9 LW |
102 | #ifdef MSDOS |
103 | if (size > 0xffff) { | |
104 | fprintf(stderr, "Allocation too large: %lx\n", size) FLUSH; | |
105 | exit(1); | |
106 | } | |
107 | #endif /* MSDOS */ | |
34de22dd LW |
108 | #ifdef DEBUGGING |
109 | if ((long)size < 0) | |
110 | fatal("panic: malloc"); | |
111 | #endif | |
8d063cd8 LW |
112 | ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
113 | #ifdef DEBUGGING | |
a687059c | 114 | # ifndef I286 |
8d063cd8 LW |
115 | if (debug & 128) |
116 | fprintf(stderr,"0x%x: (%05d) malloc %d bytes\n",ptr,an++,size); | |
a687059c LW |
117 | # else |
118 | if (debug & 128) | |
119 | fprintf(stderr,"0x%lx: (%05d) malloc %d bytes\n",ptr,an++,size); | |
120 | # endif | |
8d063cd8 LW |
121 | #endif |
122 | if (ptr != Nullch) | |
123 | return ptr; | |
124 | else { | |
34de22dd | 125 | fputs(nomem,stderr) FLUSH; |
8d063cd8 LW |
126 | exit(1); |
127 | } | |
128 | /*NOTREACHED*/ | |
a687059c LW |
129 | #ifdef lint |
130 | return ptr; | |
131 | #endif | |
8d063cd8 LW |
132 | } |
133 | ||
134 | /* paranoid version of realloc */ | |
135 | ||
136 | char * | |
137 | saferealloc(where,size) | |
138 | char *where; | |
62b28dd9 | 139 | #ifndef MSDOS |
8d063cd8 | 140 | MEM_SIZE size; |
62b28dd9 LW |
141 | #else |
142 | unsigned long size; | |
143 | #endif /* MSDOS */ | |
8d063cd8 LW |
144 | { |
145 | char *ptr; | |
146 | char *realloc(); | |
147 | ||
62b28dd9 LW |
148 | #ifdef MSDOS |
149 | if (size > 0xffff) { | |
150 | fprintf(stderr, "Reallocation too large: %lx\n", size) FLUSH; | |
151 | exit(1); | |
152 | } | |
153 | #endif /* MSDOS */ | |
378cc40b LW |
154 | if (!where) |
155 | fatal("Null realloc"); | |
34de22dd LW |
156 | #ifdef DEBUGGING |
157 | if ((long)size < 0) | |
158 | fatal("panic: realloc"); | |
159 | #endif | |
8d063cd8 LW |
160 | ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */ |
161 | #ifdef DEBUGGING | |
a687059c | 162 | # ifndef I286 |
8d063cd8 LW |
163 | if (debug & 128) { |
164 | fprintf(stderr,"0x%x: (%05d) rfree\n",where,an++); | |
165 | fprintf(stderr,"0x%x: (%05d) realloc %d bytes\n",ptr,an++,size); | |
166 | } | |
a687059c LW |
167 | # else |
168 | if (debug & 128) { | |
169 | fprintf(stderr,"0x%lx: (%05d) rfree\n",where,an++); | |
170 | fprintf(stderr,"0x%lx: (%05d) realloc %d bytes\n",ptr,an++,size); | |
171 | } | |
172 | # endif | |
8d063cd8 LW |
173 | #endif |
174 | if (ptr != Nullch) | |
175 | return ptr; | |
176 | else { | |
34de22dd | 177 | fputs(nomem,stderr) FLUSH; |
8d063cd8 LW |
178 | exit(1); |
179 | } | |
180 | /*NOTREACHED*/ | |
a687059c LW |
181 | #ifdef lint |
182 | return ptr; | |
183 | #endif | |
8d063cd8 LW |
184 | } |
185 | ||
186 | /* safe version of free */ | |
187 | ||
a687059c | 188 | void |
8d063cd8 LW |
189 | safefree(where) |
190 | char *where; | |
191 | { | |
192 | #ifdef DEBUGGING | |
a687059c | 193 | # ifndef I286 |
8d063cd8 LW |
194 | if (debug & 128) |
195 | fprintf(stderr,"0x%x: (%05d) free\n",where,an++); | |
a687059c LW |
196 | # else |
197 | if (debug & 128) | |
198 | fprintf(stderr,"0x%lx: (%05d) free\n",where,an++); | |
199 | # endif | |
8d063cd8 | 200 | #endif |
378cc40b LW |
201 | if (where) { |
202 | free(where); | |
203 | } | |
8d063cd8 LW |
204 | } |
205 | ||
a687059c LW |
206 | #ifdef LEAKTEST |
207 | ||
208 | #define ALIGN sizeof(long) | |
8d063cd8 LW |
209 | |
210 | char * | |
a687059c LW |
211 | safexmalloc(x,size) |
212 | int x; | |
213 | MEM_SIZE size; | |
8d063cd8 | 214 | { |
a687059c | 215 | register char *where; |
8d063cd8 | 216 | |
a687059c LW |
217 | where = safemalloc(size + ALIGN); |
218 | xcount[x]++; | |
219 | where[0] = x % 100; | |
220 | where[1] = x / 100; | |
221 | return where + ALIGN; | |
8d063cd8 | 222 | } |
8d063cd8 LW |
223 | |
224 | char * | |
a687059c LW |
225 | safexrealloc(where,size) |
226 | char *where; | |
227 | MEM_SIZE size; | |
228 | { | |
229 | return saferealloc(where - ALIGN, size + ALIGN) + ALIGN; | |
230 | } | |
231 | ||
232 | void | |
233 | safexfree(where) | |
234 | char *where; | |
235 | { | |
236 | int x; | |
237 | ||
238 | if (!where) | |
239 | return; | |
240 | where -= ALIGN; | |
241 | x = where[0] + 100 * where[1]; | |
242 | xcount[x]--; | |
243 | safefree(where); | |
244 | } | |
245 | ||
246 | xstat() | |
8d063cd8 | 247 | { |
a687059c | 248 | register int i; |
8d063cd8 | 249 | |
a687059c LW |
250 | for (i = 0; i < MAXXCOUNT; i++) { |
251 | if (xcount[i] != lastxcount[i]) { | |
252 | fprintf(stderr,"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]); | |
253 | lastxcount[i] = xcount[i]; | |
8d063cd8 LW |
254 | } |
255 | } | |
8d063cd8 | 256 | } |
a687059c LW |
257 | |
258 | #endif /* LEAKTEST */ | |
8d063cd8 LW |
259 | |
260 | /* copy a string up to some (non-backslashed) delimiter, if any */ | |
261 | ||
262 | char * | |
a687059c | 263 | cpytill(to,from,fromend,delim,retlen) |
62b28dd9 LW |
264 | register char *to; |
265 | register char *from; | |
a687059c | 266 | register char *fromend; |
8d063cd8 | 267 | register int delim; |
a687059c | 268 | int *retlen; |
8d063cd8 | 269 | { |
a687059c LW |
270 | char *origto = to; |
271 | ||
272 | for (; from < fromend; from++,to++) { | |
378cc40b LW |
273 | if (*from == '\\') { |
274 | if (from[1] == delim) | |
275 | from++; | |
276 | else if (from[1] == '\\') | |
277 | *to++ = *from++; | |
278 | } | |
8d063cd8 LW |
279 | else if (*from == delim) |
280 | break; | |
281 | *to = *from; | |
282 | } | |
283 | *to = '\0'; | |
a687059c | 284 | *retlen = to - origto; |
8d063cd8 LW |
285 | return from; |
286 | } | |
287 | ||
288 | /* return ptr to little string in big string, NULL if not found */ | |
378cc40b | 289 | /* This routine was donated by Corey Satten. */ |
8d063cd8 LW |
290 | |
291 | char * | |
292 | instr(big, little) | |
378cc40b LW |
293 | register char *big; |
294 | register char *little; | |
295 | { | |
296 | register char *s, *x; | |
a687059c | 297 | register int first; |
378cc40b | 298 | |
a687059c LW |
299 | if (!little) |
300 | return big; | |
301 | first = *little++; | |
378cc40b LW |
302 | if (!first) |
303 | return big; | |
304 | while (*big) { | |
305 | if (*big++ != first) | |
306 | continue; | |
307 | for (x=big,s=little; *s; /**/ ) { | |
308 | if (!*x) | |
309 | return Nullch; | |
310 | if (*s++ != *x++) { | |
311 | s--; | |
312 | break; | |
313 | } | |
314 | } | |
315 | if (!*s) | |
316 | return big-1; | |
317 | } | |
318 | return Nullch; | |
319 | } | |
8d063cd8 | 320 | |
a687059c LW |
321 | /* same as instr but allow embedded nulls */ |
322 | ||
323 | char * | |
324 | ninstr(big, bigend, little, lend) | |
325 | register char *big; | |
326 | register char *bigend; | |
327 | char *little; | |
328 | char *lend; | |
8d063cd8 | 329 | { |
a687059c LW |
330 | register char *s, *x; |
331 | register int first = *little; | |
332 | register char *littleend = lend; | |
378cc40b | 333 | |
a687059c LW |
334 | if (!first && little > littleend) |
335 | return big; | |
336 | bigend -= littleend - little++; | |
337 | while (big <= bigend) { | |
338 | if (*big++ != first) | |
339 | continue; | |
340 | for (x=big,s=little; s < littleend; /**/ ) { | |
341 | if (*s++ != *x++) { | |
342 | s--; | |
343 | break; | |
344 | } | |
345 | } | |
346 | if (s >= littleend) | |
347 | return big-1; | |
378cc40b | 348 | } |
a687059c LW |
349 | return Nullch; |
350 | } | |
351 | ||
352 | /* reverse of the above--find last substring */ | |
353 | ||
354 | char * | |
355 | rninstr(big, bigend, little, lend) | |
356 | register char *big; | |
357 | char *bigend; | |
358 | char *little; | |
359 | char *lend; | |
360 | { | |
361 | register char *bigbeg; | |
362 | register char *s, *x; | |
363 | register int first = *little; | |
364 | register char *littleend = lend; | |
365 | ||
366 | if (!first && little > littleend) | |
367 | return bigend; | |
368 | bigbeg = big; | |
369 | big = bigend - (littleend - little++); | |
370 | while (big >= bigbeg) { | |
371 | if (*big-- != first) | |
372 | continue; | |
373 | for (x=big+2,s=little; s < littleend; /**/ ) { | |
374 | if (*s++ != *x++) { | |
375 | s--; | |
376 | break; | |
377 | } | |
378 | } | |
379 | if (s >= littleend) | |
380 | return big+1; | |
378cc40b | 381 | } |
a687059c | 382 | return Nullch; |
378cc40b | 383 | } |
a687059c LW |
384 | |
385 | unsigned char fold[] = { | |
386 | 0, 1, 2, 3, 4, 5, 6, 7, | |
387 | 8, 9, 10, 11, 12, 13, 14, 15, | |
388 | 16, 17, 18, 19, 20, 21, 22, 23, | |
389 | 24, 25, 26, 27, 28, 29, 30, 31, | |
390 | 32, 33, 34, 35, 36, 37, 38, 39, | |
391 | 40, 41, 42, 43, 44, 45, 46, 47, | |
392 | 48, 49, 50, 51, 52, 53, 54, 55, | |
393 | 56, 57, 58, 59, 60, 61, 62, 63, | |
394 | 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', | |
395 | 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', | |
396 | 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', | |
397 | 'x', 'y', 'z', 91, 92, 93, 94, 95, | |
398 | 96, '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', 123, 124, 125, 126, 127, | |
402 | 128, 129, 130, 131, 132, 133, 134, 135, | |
403 | 136, 137, 138, 139, 140, 141, 142, 143, | |
404 | 144, 145, 146, 147, 148, 149, 150, 151, | |
405 | 152, 153, 154, 155, 156, 157, 158, 159, | |
406 | 160, 161, 162, 163, 164, 165, 166, 167, | |
407 | 168, 169, 170, 171, 172, 173, 174, 175, | |
408 | 176, 177, 178, 179, 180, 181, 182, 183, | |
409 | 184, 185, 186, 187, 188, 189, 190, 191, | |
410 | 192, 193, 194, 195, 196, 197, 198, 199, | |
411 | 200, 201, 202, 203, 204, 205, 206, 207, | |
412 | 208, 209, 210, 211, 212, 213, 214, 215, | |
413 | 216, 217, 218, 219, 220, 221, 222, 223, | |
414 | 224, 225, 226, 227, 228, 229, 230, 231, | |
415 | 232, 233, 234, 235, 236, 237, 238, 239, | |
416 | 240, 241, 242, 243, 244, 245, 246, 247, | |
417 | 248, 249, 250, 251, 252, 253, 254, 255 | |
418 | }; | |
378cc40b LW |
419 | |
420 | static unsigned char freq[] = { | |
421 | 1, 2, 84, 151, 154, 155, 156, 157, | |
422 | 165, 246, 250, 3, 158, 7, 18, 29, | |
423 | 40, 51, 62, 73, 85, 96, 107, 118, | |
424 | 129, 140, 147, 148, 149, 150, 152, 153, | |
425 | 255, 182, 224, 205, 174, 176, 180, 217, | |
426 | 233, 232, 236, 187, 235, 228, 234, 226, | |
427 | 222, 219, 211, 195, 188, 193, 185, 184, | |
428 | 191, 183, 201, 229, 181, 220, 194, 162, | |
429 | 163, 208, 186, 202, 200, 218, 198, 179, | |
430 | 178, 214, 166, 170, 207, 199, 209, 206, | |
431 | 204, 160, 212, 216, 215, 192, 175, 173, | |
432 | 243, 172, 161, 190, 203, 189, 164, 230, | |
433 | 167, 248, 227, 244, 242, 255, 241, 231, | |
434 | 240, 253, 169, 210, 245, 237, 249, 247, | |
435 | 239, 168, 252, 251, 254, 238, 223, 221, | |
436 | 213, 225, 177, 197, 171, 196, 159, 4, | |
437 | 5, 6, 8, 9, 10, 11, 12, 13, | |
438 | 14, 15, 16, 17, 19, 20, 21, 22, | |
439 | 23, 24, 25, 26, 27, 28, 30, 31, | |
440 | 32, 33, 34, 35, 36, 37, 38, 39, | |
441 | 41, 42, 43, 44, 45, 46, 47, 48, | |
442 | 49, 50, 52, 53, 54, 55, 56, 57, | |
443 | 58, 59, 60, 61, 63, 64, 65, 66, | |
444 | 67, 68, 69, 70, 71, 72, 74, 75, | |
445 | 76, 77, 78, 79, 80, 81, 82, 83, | |
446 | 86, 87, 88, 89, 90, 91, 92, 93, | |
447 | 94, 95, 97, 98, 99, 100, 101, 102, | |
448 | 103, 104, 105, 106, 108, 109, 110, 111, | |
449 | 112, 113, 114, 115, 116, 117, 119, 120, | |
450 | 121, 122, 123, 124, 125, 126, 127, 128, | |
451 | 130, 131, 132, 133, 134, 135, 136, 137, | |
452 | 138, 139, 141, 142, 143, 144, 145, 146 | |
453 | }; | |
8d063cd8 | 454 | |
378cc40b | 455 | void |
a687059c | 456 | fbmcompile(str, iflag) |
378cc40b | 457 | STR *str; |
a687059c | 458 | int iflag; |
378cc40b | 459 | { |
a687059c LW |
460 | register unsigned char *s; |
461 | register unsigned char *table; | |
378cc40b LW |
462 | register int i; |
463 | register int len = str->str_cur; | |
464 | int rarest = 0; | |
20188a90 | 465 | unsigned int frequency = 256; |
378cc40b | 466 | |
62b28dd9 | 467 | Str_Grow(str,len+258); |
a687059c LW |
468 | #ifndef lint |
469 | table = (unsigned char*)(str->str_ptr + len + 1); | |
470 | #else | |
471 | table = Null(unsigned char*); | |
472 | #endif | |
473 | s = table - 2; | |
474 | for (i = 0; i < 256; i++) { | |
378cc40b LW |
475 | table[i] = len; |
476 | } | |
477 | i = 0; | |
a687059c LW |
478 | #ifndef lint |
479 | while (s >= (unsigned char*)(str->str_ptr)) | |
480 | #endif | |
481 | { | |
482 | if (table[*s] == len) { | |
483 | #ifndef pdp11 | |
484 | if (iflag) | |
485 | table[*s] = table[fold[*s]] = i; | |
486 | #else | |
487 | if (iflag) { | |
488 | int j; | |
489 | j = fold[*s]; | |
490 | table[j] = i; | |
491 | table[*s] = i; | |
492 | } | |
493 | #endif /* pdp11 */ | |
494 | else | |
495 | table[*s] = i; | |
496 | } | |
378cc40b LW |
497 | s--,i++; |
498 | } | |
a687059c | 499 | str->str_pok |= SP_FBM; /* deep magic */ |
378cc40b | 500 | |
a687059c LW |
501 | #ifndef lint |
502 | s = (unsigned char*)(str->str_ptr); /* deeper magic */ | |
503 | #else | |
504 | s = Null(unsigned char*); | |
505 | #endif | |
506 | if (iflag) { | |
20188a90 | 507 | register unsigned int tmp, foldtmp; |
a687059c LW |
508 | str->str_pok |= SP_CASEFOLD; |
509 | for (i = 0; i < len; i++) { | |
510 | tmp=freq[s[i]]; | |
511 | foldtmp=freq[fold[s[i]]]; | |
512 | if (tmp < frequency && foldtmp < frequency) { | |
513 | rarest = i; | |
514 | /* choose most frequent among the two */ | |
515 | frequency = (tmp > foldtmp) ? tmp : foldtmp; | |
516 | } | |
517 | } | |
518 | } | |
519 | else { | |
520 | for (i = 0; i < len; i++) { | |
521 | if (freq[s[i]] < frequency) { | |
522 | rarest = i; | |
523 | frequency = freq[s[i]]; | |
524 | } | |
378cc40b LW |
525 | } |
526 | } | |
527 | str->str_rare = s[rarest]; | |
a687059c | 528 | str->str_state = rarest; |
378cc40b LW |
529 | #ifdef DEBUGGING |
530 | if (debug & 512) | |
a687059c | 531 | fprintf(stderr,"rarest char %c at %d\n",str->str_rare, str->str_state); |
378cc40b LW |
532 | #endif |
533 | } | |
534 | ||
378cc40b LW |
535 | char * |
536 | fbminstr(big, bigend, littlestr) | |
a687059c LW |
537 | unsigned char *big; |
538 | register unsigned char *bigend; | |
378cc40b LW |
539 | STR *littlestr; |
540 | { | |
a687059c | 541 | register unsigned char *s; |
378cc40b LW |
542 | register int tmp; |
543 | register int littlelen; | |
a687059c LW |
544 | register unsigned char *little; |
545 | register unsigned char *table; | |
546 | register unsigned char *olds; | |
547 | register unsigned char *oldlittle; | |
378cc40b | 548 | |
a687059c LW |
549 | #ifndef lint |
550 | if (!(littlestr->str_pok & SP_FBM)) | |
9f68db38 LW |
551 | return ninstr((char*)big,(char*)bigend, |
552 | littlestr->str_ptr, littlestr->str_ptr + littlestr->str_cur); | |
a687059c | 553 | #endif |
378cc40b LW |
554 | |
555 | littlelen = littlestr->str_cur; | |
a687059c LW |
556 | #ifndef lint |
557 | if (littlestr->str_pok & SP_TAIL && !multiline) { /* tail anchored? */ | |
0f85fab0 LW |
558 | if (littlelen > bigend - big) |
559 | return Nullch; | |
a687059c LW |
560 | little = (unsigned char*)littlestr->str_ptr; |
561 | if (littlestr->str_pok & SP_CASEFOLD) { /* oops, fake it */ | |
562 | big = bigend - littlelen; /* just start near end */ | |
563 | if (bigend[-1] == '\n' && little[littlelen-1] != '\n') | |
564 | big--; | |
378cc40b LW |
565 | } |
566 | else { | |
a687059c LW |
567 | s = bigend - littlelen; |
568 | if (*s == *little && bcmp(s,little,littlelen)==0) | |
569 | return (char*)s; /* how sweet it is */ | |
34de22dd LW |
570 | else if (bigend[-1] == '\n' && little[littlelen-1] != '\n' |
571 | && s > big) { | |
a687059c LW |
572 | s--; |
573 | if (*s == *little && bcmp(s,little,littlelen)==0) | |
574 | return (char*)s; | |
575 | } | |
576 | return Nullch; | |
577 | } | |
578 | } | |
579 | table = (unsigned char*)(littlestr->str_ptr + littlelen + 1); | |
580 | #else | |
581 | table = Null(unsigned char*); | |
582 | #endif | |
62b28dd9 LW |
583 | if (--littlelen >= bigend - big) |
584 | return Nullch; | |
585 | s = big + littlelen; | |
a687059c LW |
586 | oldlittle = little = table - 2; |
587 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insensitive? */ | |
20188a90 | 588 | if (s < bigend) { |
a687059c LW |
589 | top1: |
590 | if (tmp = table[*s]) { | |
62b28dd9 LW |
591 | #ifdef POINTERRIGOR |
592 | if (bigend - s > tmp) { | |
593 | s += tmp; | |
594 | goto top1; | |
595 | } | |
596 | #else | |
597 | if ((s += tmp) < bigend) | |
598 | goto top1; | |
599 | #endif | |
600 | return Nullch; | |
a687059c LW |
601 | } |
602 | else { | |
603 | tmp = littlelen; /* less expensive than calling strncmp() */ | |
604 | olds = s; | |
605 | while (tmp--) { | |
606 | if (*--s == *--little || fold[*s] == *little) | |
607 | continue; | |
608 | s = olds + 1; /* here we pay the price for failure */ | |
609 | little = oldlittle; | |
610 | if (s < bigend) /* fake up continue to outer loop */ | |
611 | goto top1; | |
612 | return Nullch; | |
613 | } | |
614 | #ifndef lint | |
615 | return (char *)s; | |
616 | #endif | |
617 | } | |
618 | } | |
619 | } | |
620 | else { | |
20188a90 | 621 | if (s < bigend) { |
a687059c LW |
622 | top2: |
623 | if (tmp = table[*s]) { | |
62b28dd9 LW |
624 | #ifdef POINTERRIGOR |
625 | if (bigend - s > tmp) { | |
626 | s += tmp; | |
627 | goto top2; | |
628 | } | |
629 | #else | |
630 | if ((s += tmp) < bigend) | |
631 | goto top2; | |
632 | #endif | |
633 | return Nullch; | |
a687059c LW |
634 | } |
635 | else { | |
636 | tmp = littlelen; /* less expensive than calling strncmp() */ | |
637 | olds = s; | |
638 | while (tmp--) { | |
639 | if (*--s == *--little) | |
640 | continue; | |
641 | s = olds + 1; /* here we pay the price for failure */ | |
642 | little = oldlittle; | |
643 | if (s < bigend) /* fake up continue to outer loop */ | |
644 | goto top2; | |
645 | return Nullch; | |
646 | } | |
647 | #ifndef lint | |
648 | return (char *)s; | |
649 | #endif | |
378cc40b | 650 | } |
378cc40b LW |
651 | } |
652 | } | |
653 | return Nullch; | |
654 | } | |
655 | ||
656 | char * | |
657 | screaminstr(bigstr, littlestr) | |
658 | STR *bigstr; | |
659 | STR *littlestr; | |
660 | { | |
a687059c LW |
661 | register unsigned char *s, *x; |
662 | register unsigned char *big; | |
378cc40b LW |
663 | register int pos; |
664 | register int previous; | |
665 | register int first; | |
a687059c LW |
666 | register unsigned char *little; |
667 | register unsigned char *bigend; | |
668 | register unsigned char *littleend; | |
378cc40b LW |
669 | |
670 | if ((pos = screamfirst[littlestr->str_rare]) < 0) | |
671 | return Nullch; | |
a687059c LW |
672 | #ifndef lint |
673 | little = (unsigned char *)(littlestr->str_ptr); | |
674 | #else | |
675 | little = Null(unsigned char *); | |
676 | #endif | |
677 | littleend = little + littlestr->str_cur; | |
378cc40b | 678 | first = *little++; |
a687059c LW |
679 | previous = littlestr->str_state; |
680 | #ifndef lint | |
681 | big = (unsigned char *)(bigstr->str_ptr); | |
682 | #else | |
683 | big = Null(unsigned char*); | |
684 | #endif | |
685 | bigend = big + bigstr->str_cur; | |
378cc40b LW |
686 | big -= previous; |
687 | while (pos < previous) { | |
a687059c | 688 | #ifndef lint |
378cc40b | 689 | if (!(pos += screamnext[pos])) |
a687059c | 690 | #endif |
378cc40b LW |
691 | return Nullch; |
692 | } | |
a687059c LW |
693 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insignificant? */ |
694 | do { | |
695 | if (big[pos] != first && big[pos] != fold[first]) | |
696 | continue; | |
697 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { | |
698 | if (x >= bigend) | |
699 | return Nullch; | |
700 | if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) { | |
701 | s--; | |
702 | break; | |
703 | } | |
704 | } | |
705 | if (s == littleend) | |
706 | #ifndef lint | |
707 | return (char *)(big+pos); | |
708 | #else | |
8d063cd8 | 709 | return Nullch; |
a687059c LW |
710 | #endif |
711 | } while ( | |
712 | #ifndef lint | |
713 | pos += screamnext[pos] /* does this goof up anywhere? */ | |
714 | #else | |
715 | pos += screamnext[0] | |
716 | #endif | |
717 | ); | |
718 | } | |
719 | else { | |
720 | do { | |
721 | if (big[pos] != first) | |
722 | continue; | |
723 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { | |
724 | if (x >= bigend) | |
725 | return Nullch; | |
726 | if (*s++ != *x++) { | |
727 | s--; | |
728 | break; | |
729 | } | |
378cc40b | 730 | } |
a687059c LW |
731 | if (s == littleend) |
732 | #ifndef lint | |
733 | return (char *)(big+pos); | |
734 | #else | |
735 | return Nullch; | |
736 | #endif | |
737 | } while ( | |
738 | #ifndef lint | |
739 | pos += screamnext[pos] | |
740 | #else | |
741 | pos += screamnext[0] | |
742 | #endif | |
743 | ); | |
744 | } | |
8d063cd8 LW |
745 | return Nullch; |
746 | } | |
747 | ||
748 | /* copy a string to a safe spot */ | |
749 | ||
750 | char * | |
751 | savestr(str) | |
752 | char *str; | |
753 | { | |
a687059c | 754 | register char *newaddr; |
8d063cd8 | 755 | |
a687059c | 756 | New(902,newaddr,strlen(str)+1,char); |
8d063cd8 LW |
757 | (void)strcpy(newaddr,str); |
758 | return newaddr; | |
759 | } | |
760 | ||
a687059c LW |
761 | /* same thing but with a known length */ |
762 | ||
763 | char * | |
764 | nsavestr(str, len) | |
765 | char *str; | |
766 | register int len; | |
767 | { | |
768 | register char *newaddr; | |
769 | ||
770 | New(903,newaddr,len+1,char); | |
771 | (void)bcopy(str,newaddr,len); /* might not be null terminated */ | |
772 | newaddr[len] = '\0'; /* is now */ | |
773 | return newaddr; | |
774 | } | |
775 | ||
8d063cd8 LW |
776 | /* grow a static string to at least a certain length */ |
777 | ||
778 | void | |
779 | growstr(strptr,curlen,newlen) | |
780 | char **strptr; | |
781 | int *curlen; | |
782 | int newlen; | |
783 | { | |
784 | if (newlen > *curlen) { /* need more room? */ | |
785 | if (*curlen) | |
a687059c | 786 | Renew(*strptr,newlen,char); |
8d063cd8 | 787 | else |
a687059c | 788 | New(905,*strptr,newlen,char); |
8d063cd8 LW |
789 | *curlen = newlen; |
790 | } | |
791 | } | |
792 | ||
a687059c | 793 | #ifndef VARARGS |
378cc40b LW |
794 | /*VARARGS1*/ |
795 | mess(pat,a1,a2,a3,a4) | |
796 | char *pat; | |
a687059c | 797 | long a1, a2, a3, a4; |
378cc40b LW |
798 | { |
799 | char *s; | |
800 | ||
a687059c LW |
801 | s = buf; |
802 | (void)sprintf(s,pat,a1,a2,a3,a4); | |
378cc40b LW |
803 | s += strlen(s); |
804 | if (s[-1] != '\n') { | |
62b28dd9 | 805 | if (curcmd->c_line) { |
20188a90 LW |
806 | (void)sprintf(s," at %s line %ld", |
807 | stab_val(curcmd->c_filestab)->str_ptr, (long)curcmd->c_line); | |
378cc40b LW |
808 | s += strlen(s); |
809 | } | |
810 | if (last_in_stab && | |
a687059c LW |
811 | stab_io(last_in_stab) && |
812 | stab_io(last_in_stab)->lines ) { | |
813 | (void)sprintf(s,", <%s> line %ld", | |
814 | last_in_stab == argvstab ? "" : stab_name(last_in_stab), | |
815 | (long)stab_io(last_in_stab)->lines); | |
378cc40b LW |
816 | s += strlen(s); |
817 | } | |
a687059c | 818 | (void)strcpy(s,".\n"); |
378cc40b LW |
819 | } |
820 | } | |
821 | ||
8d063cd8 LW |
822 | /*VARARGS1*/ |
823 | fatal(pat,a1,a2,a3,a4) | |
824 | char *pat; | |
a687059c | 825 | long a1, a2, a3, a4; |
8d063cd8 LW |
826 | { |
827 | extern FILE *e_fp; | |
828 | extern char *e_tmpname; | |
9f68db38 | 829 | char *tmps; |
8d063cd8 | 830 | |
378cc40b | 831 | mess(pat,a1,a2,a3,a4); |
a559c259 | 832 | if (in_eval) { |
a687059c | 833 | str_set(stab_val(stabent("@",TRUE)),buf); |
9f68db38 LW |
834 | tmps = "_EVAL_"; |
835 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || | |
836 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { | |
837 | #ifdef DEBUGGING | |
838 | if (debug & 4) { | |
839 | deb("(Skipping label #%d %s)\n",loop_ptr, | |
840 | loop_stack[loop_ptr].loop_label); | |
841 | } | |
842 | #endif | |
843 | loop_ptr--; | |
844 | } | |
845 | #ifdef DEBUGGING | |
846 | if (debug & 4) { | |
847 | deb("(Found label #%d %s)\n",loop_ptr, | |
848 | loop_stack[loop_ptr].loop_label); | |
849 | } | |
850 | #endif | |
851 | if (loop_ptr < 0) { | |
852 | in_eval = 0; | |
853 | fatal("Bad label: %s", tmps); | |
854 | } | |
855 | longjmp(loop_stack[loop_ptr].loop_env, 1); | |
a559c259 | 856 | } |
a687059c LW |
857 | fputs(buf,stderr); |
858 | (void)fflush(stderr); | |
8d063cd8 | 859 | if (e_fp) |
a687059c | 860 | (void)UNLINK(e_tmpname); |
378cc40b | 861 | statusvalue >>= 8; |
27e2fb84 | 862 | exit((int)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
378cc40b LW |
863 | } |
864 | ||
865 | /*VARARGS1*/ | |
866 | warn(pat,a1,a2,a3,a4) | |
867 | char *pat; | |
a687059c | 868 | long a1, a2, a3, a4; |
378cc40b LW |
869 | { |
870 | mess(pat,a1,a2,a3,a4); | |
a687059c LW |
871 | fputs(buf,stderr); |
872 | #ifdef LEAKTEST | |
873 | #ifdef DEBUGGING | |
874 | if (debug & 4096) | |
875 | xstat(); | |
876 | #endif | |
877 | #endif | |
878 | (void)fflush(stderr); | |
8d063cd8 | 879 | } |
a687059c LW |
880 | #else |
881 | /*VARARGS0*/ | |
882 | mess(args) | |
883 | va_list args; | |
884 | { | |
885 | char *pat; | |
886 | char *s; | |
887 | #ifdef CHARVSPRINTF | |
888 | char *vsprintf(); | |
889 | #else | |
890 | int vsprintf(); | |
891 | #endif | |
892 | ||
893 | s = buf; | |
894 | #ifdef lint | |
895 | pat = Nullch; | |
896 | #else | |
897 | pat = va_arg(args, char *); | |
898 | #endif | |
899 | (void) vsprintf(s,pat,args); | |
900 | ||
901 | s += strlen(s); | |
902 | if (s[-1] != '\n') { | |
62b28dd9 | 903 | if (curcmd->c_line) { |
20188a90 LW |
904 | (void)sprintf(s," at %s line %ld", |
905 | stab_val(curcmd->c_filestab)->str_ptr, (long)curcmd->c_line); | |
a687059c LW |
906 | s += strlen(s); |
907 | } | |
908 | if (last_in_stab && | |
909 | stab_io(last_in_stab) && | |
910 | stab_io(last_in_stab)->lines ) { | |
911 | (void)sprintf(s,", <%s> line %ld", | |
912 | last_in_stab == argvstab ? "" : last_in_stab->str_magic->str_ptr, | |
913 | (long)stab_io(last_in_stab)->lines); | |
914 | s += strlen(s); | |
915 | } | |
916 | (void)strcpy(s,".\n"); | |
917 | } | |
918 | } | |
919 | ||
920 | /*VARARGS0*/ | |
921 | fatal(va_alist) | |
922 | va_dcl | |
923 | { | |
924 | va_list args; | |
925 | extern FILE *e_fp; | |
926 | extern char *e_tmpname; | |
9f68db38 | 927 | char *tmps; |
a687059c LW |
928 | |
929 | #ifndef lint | |
930 | va_start(args); | |
931 | #else | |
932 | args = 0; | |
933 | #endif | |
934 | mess(args); | |
935 | va_end(args); | |
936 | if (in_eval) { | |
937 | str_set(stab_val(stabent("@",TRUE)),buf); | |
9f68db38 LW |
938 | tmps = "_EVAL_"; |
939 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || | |
940 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { | |
941 | #ifdef DEBUGGING | |
942 | if (debug & 4) { | |
943 | deb("(Skipping label #%d %s)\n",loop_ptr, | |
944 | loop_stack[loop_ptr].loop_label); | |
945 | } | |
946 | #endif | |
947 | loop_ptr--; | |
948 | } | |
949 | #ifdef DEBUGGING | |
950 | if (debug & 4) { | |
951 | deb("(Found label #%d %s)\n",loop_ptr, | |
952 | loop_stack[loop_ptr].loop_label); | |
953 | } | |
954 | #endif | |
955 | if (loop_ptr < 0) { | |
956 | in_eval = 0; | |
957 | fatal("Bad label: %s", tmps); | |
958 | } | |
959 | longjmp(loop_stack[loop_ptr].loop_env, 1); | |
a687059c LW |
960 | } |
961 | fputs(buf,stderr); | |
962 | (void)fflush(stderr); | |
963 | if (e_fp) | |
964 | (void)UNLINK(e_tmpname); | |
965 | statusvalue >>= 8; | |
27e2fb84 | 966 | exit((int)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
a687059c LW |
967 | } |
968 | ||
969 | /*VARARGS0*/ | |
970 | warn(va_alist) | |
971 | va_dcl | |
972 | { | |
973 | va_list args; | |
974 | ||
975 | #ifndef lint | |
976 | va_start(args); | |
977 | #else | |
978 | args = 0; | |
979 | #endif | |
980 | mess(args); | |
981 | va_end(args); | |
982 | ||
983 | fputs(buf,stderr); | |
984 | #ifdef LEAKTEST | |
985 | #ifdef DEBUGGING | |
986 | if (debug & 4096) | |
987 | xstat(); | |
988 | #endif | |
989 | #endif | |
990 | (void)fflush(stderr); | |
991 | } | |
992 | #endif | |
8d063cd8 LW |
993 | |
994 | static bool firstsetenv = TRUE; | |
995 | extern char **environ; | |
996 | ||
997 | void | |
998 | setenv(nam,val) | |
999 | char *nam, *val; | |
1000 | { | |
1001 | register int i=envix(nam); /* where does it go? */ | |
1002 | ||
a687059c LW |
1003 | if (!val) { |
1004 | while (environ[i]) { | |
1005 | environ[i] = environ[i+1]; | |
1006 | i++; | |
1007 | } | |
1008 | return; | |
1009 | } | |
8d063cd8 LW |
1010 | if (!environ[i]) { /* does not exist yet */ |
1011 | if (firstsetenv) { /* need we copy environment? */ | |
1012 | int j; | |
a687059c LW |
1013 | char **tmpenv; |
1014 | ||
1015 | New(901,tmpenv, i+2, char*); | |
8d063cd8 LW |
1016 | firstsetenv = FALSE; |
1017 | for (j=0; j<i; j++) /* copy environment */ | |
1018 | tmpenv[j] = environ[j]; | |
1019 | environ = tmpenv; /* tell exec where it is now */ | |
1020 | } | |
8d063cd8 | 1021 | else |
a687059c | 1022 | Renew(environ, i+2, char*); /* just expand it a bit */ |
8d063cd8 LW |
1023 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
1024 | } | |
a687059c | 1025 | New(904, environ[i], strlen(nam) + strlen(val) + 2, char); |
8d063cd8 LW |
1026 | /* this may or may not be in */ |
1027 | /* the old environ structure */ | |
62b28dd9 | 1028 | #ifndef MSDOS |
a687059c | 1029 | (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */ |
62b28dd9 LW |
1030 | #else |
1031 | /* MS-DOS requires environment variable names to be in uppercase */ | |
1032 | strcpy(environ[i],nam); strupr(environ[i],nam); | |
1033 | (void)sprintf(environ[i] + strlen(nam),"=%s",val); | |
1034 | #endif /* MSDOS */ | |
8d063cd8 LW |
1035 | } |
1036 | ||
1037 | int | |
1038 | envix(nam) | |
1039 | char *nam; | |
1040 | { | |
1041 | register int i, len = strlen(nam); | |
1042 | ||
1043 | for (i = 0; environ[i]; i++) { | |
1044 | if (strnEQ(environ[i],nam,len) && environ[i][len] == '=') | |
1045 | break; /* strnEQ must come first to avoid */ | |
1046 | } /* potential SEGV's */ | |
1047 | return i; | |
1048 | } | |
378cc40b LW |
1049 | |
1050 | #ifdef EUNICE | |
1051 | unlnk(f) /* unlink all versions of a file */ | |
1052 | char *f; | |
1053 | { | |
1054 | int i; | |
1055 | ||
1056 | for (i = 0; unlink(f) >= 0; i++) ; | |
1057 | return i ? 0 : -1; | |
1058 | } | |
1059 | #endif | |
1060 | ||
378cc40b | 1061 | #ifndef MEMCPY |
ffed7fef | 1062 | #ifndef BCOPY |
378cc40b LW |
1063 | char * |
1064 | bcopy(from,to,len) | |
1065 | register char *from; | |
1066 | register char *to; | |
1067 | register int len; | |
1068 | { | |
1069 | char *retval = to; | |
1070 | ||
1071 | while (len--) | |
1072 | *to++ = *from++; | |
1073 | return retval; | |
1074 | } | |
ffed7fef | 1075 | #endif |
378cc40b | 1076 | |
ffed7fef | 1077 | #ifndef BZERO |
378cc40b LW |
1078 | char * |
1079 | bzero(loc,len) | |
1080 | register char *loc; | |
1081 | register int len; | |
1082 | { | |
1083 | char *retval = loc; | |
1084 | ||
1085 | while (len--) | |
1086 | *loc++ = 0; | |
1087 | return retval; | |
1088 | } | |
1089 | #endif | |
1090 | #endif | |
a687059c LW |
1091 | |
1092 | #ifdef VARARGS | |
1093 | #ifndef VPRINTF | |
1094 | ||
1095 | #ifdef CHARVSPRINTF | |
1096 | char * | |
1097 | #else | |
1098 | int | |
1099 | #endif | |
1100 | vsprintf(dest, pat, args) | |
1101 | char *dest, *pat, *args; | |
1102 | { | |
1103 | FILE fakebuf; | |
1104 | ||
1105 | fakebuf._ptr = dest; | |
1106 | fakebuf._cnt = 32767; | |
1107 | fakebuf._flag = _IOWRT|_IOSTRG; | |
1108 | _doprnt(pat, args, &fakebuf); /* what a kludge */ | |
1109 | (void)putc('\0', &fakebuf); | |
1110 | #ifdef CHARVSPRINTF | |
1111 | return(dest); | |
1112 | #else | |
1113 | return 0; /* perl doesn't use return value */ | |
1114 | #endif | |
1115 | } | |
1116 | ||
1117 | #ifdef DEBUGGING | |
1118 | int | |
1119 | vfprintf(fd, pat, args) | |
1120 | FILE *fd; | |
1121 | char *pat, *args; | |
1122 | { | |
1123 | _doprnt(pat, args, fd); | |
1124 | return 0; /* wrong, but perl doesn't use the return value */ | |
1125 | } | |
1126 | #endif | |
1127 | #endif /* VPRINTF */ | |
1128 | #endif /* VARARGS */ | |
1129 | ||
1130 | #ifdef MYSWAP | |
ffed7fef | 1131 | #if BYTEORDER != 0x4321 |
a687059c LW |
1132 | short |
1133 | my_swap(s) | |
1134 | short s; | |
1135 | { | |
1136 | #if (BYTEORDER & 1) == 0 | |
1137 | short result; | |
1138 | ||
1139 | result = ((s & 255) << 8) + ((s >> 8) & 255); | |
1140 | return result; | |
1141 | #else | |
1142 | return s; | |
1143 | #endif | |
1144 | } | |
1145 | ||
1146 | long | |
1147 | htonl(l) | |
1148 | register long l; | |
1149 | { | |
1150 | union { | |
1151 | long result; | |
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.result; | |
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 | ||
ffed7fef LW |
1168 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1169 | u.c[o & 0xf] = (l >> s) & 255; | |
a687059c LW |
1170 | } |
1171 | return u.result; | |
1172 | #endif | |
1173 | #endif | |
1174 | } | |
1175 | ||
1176 | long | |
1177 | ntohl(l) | |
1178 | register long l; | |
1179 | { | |
1180 | union { | |
1181 | long l; | |
ffed7fef | 1182 | char c[sizeof(long)]; |
a687059c LW |
1183 | } u; |
1184 | ||
ffed7fef | 1185 | #if BYTEORDER == 0x1234 |
a687059c LW |
1186 | u.c[0] = (l >> 24) & 255; |
1187 | u.c[1] = (l >> 16) & 255; | |
1188 | u.c[2] = (l >> 8) & 255; | |
1189 | u.c[3] = l & 255; | |
1190 | return u.l; | |
1191 | #else | |
ffed7fef | 1192 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
a687059c LW |
1193 | fatal("Unknown BYTEORDER\n"); |
1194 | #else | |
1195 | register int o; | |
1196 | register int s; | |
1197 | ||
1198 | u.l = l; | |
1199 | l = 0; | |
ffed7fef LW |
1200 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1201 | l |= (u.c[o & 0xf] & 255) << s; | |
a687059c LW |
1202 | } |
1203 | return l; | |
1204 | #endif | |
1205 | #endif | |
1206 | } | |
1207 | ||
ffed7fef | 1208 | #endif /* BYTEORDER != 0x4321 */ |
a687059c LW |
1209 | #endif /* HTONS */ |
1210 | ||
0f85fab0 | 1211 | #ifndef MSDOS |
a687059c LW |
1212 | FILE * |
1213 | mypopen(cmd,mode) | |
1214 | char *cmd; | |
1215 | char *mode; | |
1216 | { | |
1217 | int p[2]; | |
1218 | register int this, that; | |
1219 | register int pid; | |
1220 | STR *str; | |
1221 | int doexec = strNE(cmd,"-"); | |
1222 | ||
1223 | if (pipe(p) < 0) | |
1224 | return Nullfp; | |
1225 | this = (*mode == 'w'); | |
1226 | that = !this; | |
1227 | while ((pid = (doexec?vfork():fork())) < 0) { | |
1228 | if (errno != EAGAIN) { | |
1229 | close(p[this]); | |
1230 | if (!doexec) | |
1231 | fatal("Can't fork"); | |
1232 | return Nullfp; | |
1233 | } | |
1234 | sleep(5); | |
1235 | } | |
1236 | if (pid == 0) { | |
1237 | #define THIS that | |
1238 | #define THAT this | |
1239 | close(p[THAT]); | |
1240 | if (p[THIS] != (*mode == 'r')) { | |
1241 | dup2(p[THIS], *mode == 'r'); | |
1242 | close(p[THIS]); | |
1243 | } | |
1244 | if (doexec) { | |
ae986130 LW |
1245 | #if !defined(FCNTL) || !defined(F_SETFD) |
1246 | int fd; | |
1247 | ||
1248 | #ifndef NOFILE | |
1249 | #define NOFILE 20 | |
1250 | #endif | |
1251 | for (fd = 3; fd < NOFILE; fd++) | |
1252 | close(fd); | |
1253 | #endif | |
a687059c LW |
1254 | do_exec(cmd); /* may or may not use the shell */ |
1255 | _exit(1); | |
1256 | } | |
1257 | if (tmpstab = stabent("$",allstabs)) | |
1258 | str_numset(STAB_STR(tmpstab),(double)getpid()); | |
9f68db38 | 1259 | forkprocess = 0; |
20188a90 | 1260 | hclear(pidstatus); /* we have no children */ |
a687059c LW |
1261 | return Nullfp; |
1262 | #undef THIS | |
1263 | #undef THAT | |
1264 | } | |
62b28dd9 | 1265 | do_execfree(); /* free any memory malloced by child on vfork */ |
a687059c | 1266 | close(p[that]); |
62b28dd9 LW |
1267 | if (p[that] < p[this]) { |
1268 | dup2(p[this], p[that]); | |
1269 | close(p[this]); | |
1270 | p[this] = p[that]; | |
1271 | } | |
20188a90 LW |
1272 | str = afetch(fdpid,p[this],TRUE); |
1273 | str->str_u.str_useful = pid; | |
a687059c LW |
1274 | forkprocess = pid; |
1275 | return fdopen(p[this], mode); | |
1276 | } | |
0f85fab0 | 1277 | #endif /* !MSDOS */ |
a687059c | 1278 | |
ae986130 LW |
1279 | #ifdef NOTDEF |
1280 | dumpfds(s) | |
1281 | char *s; | |
1282 | { | |
1283 | int fd; | |
1284 | struct stat tmpstatbuf; | |
1285 | ||
1286 | fprintf(stderr,"%s", s); | |
1287 | for (fd = 0; fd < 32; fd++) { | |
1288 | if (fstat(fd,&tmpstatbuf) >= 0) | |
1289 | fprintf(stderr," %d",fd); | |
1290 | } | |
1291 | fprintf(stderr,"\n"); | |
1292 | } | |
1293 | #endif | |
1294 | ||
a687059c LW |
1295 | #ifndef DUP2 |
1296 | dup2(oldfd,newfd) | |
1297 | int oldfd; | |
1298 | int newfd; | |
1299 | { | |
62b28dd9 LW |
1300 | #if defined(FCNTL) && defined(F_DUPFD) |
1301 | close(newfd); | |
1302 | fcntl(oldfd, F_DUPFD, newfd); | |
1303 | #else | |
1304 | int fdtmp[20]; | |
ae986130 LW |
1305 | int fdx = 0; |
1306 | int fd; | |
1307 | ||
a687059c | 1308 | close(newfd); |
ae986130 LW |
1309 | while ((fd = dup(oldfd)) != newfd) /* good enough for low fd's */ |
1310 | fdtmp[fdx++] = fd; | |
1311 | while (fdx > 0) | |
1312 | close(fdtmp[--fdx]); | |
62b28dd9 | 1313 | #endif |
a687059c LW |
1314 | } |
1315 | #endif | |
1316 | ||
0f85fab0 | 1317 | #ifndef MSDOS |
a687059c LW |
1318 | int |
1319 | mypclose(ptr) | |
1320 | FILE *ptr; | |
1321 | { | |
a687059c LW |
1322 | #ifdef VOIDSIG |
1323 | void (*hstat)(), (*istat)(), (*qstat)(); | |
1324 | #else | |
1325 | int (*hstat)(), (*istat)(), (*qstat)(); | |
1326 | #endif | |
1327 | int status; | |
1328 | STR *str; | |
20188a90 | 1329 | int pid; |
a687059c | 1330 | |
20188a90 LW |
1331 | str = afetch(fdpid,fileno(ptr),TRUE); |
1332 | astore(fdpid,fileno(ptr),Nullstr); | |
a687059c | 1333 | fclose(ptr); |
20188a90 | 1334 | pid = (int)str->str_u.str_useful; |
a687059c LW |
1335 | hstat = signal(SIGHUP, SIG_IGN); |
1336 | istat = signal(SIGINT, SIG_IGN); | |
1337 | qstat = signal(SIGQUIT, SIG_IGN); | |
20188a90 LW |
1338 | pid = wait4pid(pid, &status, 0); |
1339 | signal(SIGHUP, hstat); | |
1340 | signal(SIGINT, istat); | |
1341 | signal(SIGQUIT, qstat); | |
1342 | return(pid < 0 ? pid : status); | |
1343 | } | |
1344 | ||
1345 | int | |
1346 | wait4pid(pid,statusp,flags) | |
1347 | int pid; | |
1348 | int *statusp; | |
1349 | int flags; | |
1350 | { | |
1351 | int result; | |
1352 | STR *str; | |
1353 | char spid[16]; | |
1354 | ||
1355 | if (!pid) | |
1356 | return -1; | |
a687059c | 1357 | #ifdef WAIT4 |
20188a90 | 1358 | return wait4(pid,statusp,flags,Null(struct rusage *)); |
a687059c | 1359 | #else |
20188a90 LW |
1360 | #ifdef WAITPID |
1361 | return waitpid(pid,statusp,flags); | |
1362 | #else | |
1363 | if (pid > 0) { | |
1364 | sprintf(spid, "%d", pid); | |
e5d73d77 | 1365 | str = hfetch(pidstatus,spid,strlen(spid),FALSE); |
20188a90 LW |
1366 | if (str != &str_undef) { |
1367 | *statusp = (int)str->str_u.str_useful; | |
e5d73d77 | 1368 | hdelete(pidstatus,spid,strlen(spid)); |
20188a90 LW |
1369 | return pid; |
1370 | } | |
1371 | } | |
1372 | else { | |
1373 | HENT *entry; | |
1374 | ||
1375 | hiterinit(pidstatus); | |
1376 | if (entry = hiternext(pidstatus)) { | |
1377 | pid = atoi(hiterkey(entry,statusp)); | |
1378 | str = hiterval(entry); | |
1379 | *statusp = (int)str->str_u.str_useful; | |
1380 | sprintf(spid, "%d", pid); | |
e5d73d77 | 1381 | hdelete(pidstatus,spid,strlen(spid)); |
20188a90 LW |
1382 | return pid; |
1383 | } | |
1384 | } | |
1385 | if (flags) | |
1386 | fatal("Can't do waitpid with flags"); | |
a687059c | 1387 | else { |
20188a90 LW |
1388 | register int count; |
1389 | register STR *str; | |
62b28dd9 | 1390 | |
20188a90 LW |
1391 | while ((result = wait(statusp)) != pid && pid > 0 && result >= 0) |
1392 | pidgone(result,*statusp); | |
a687059c | 1393 | if (result < 0) |
20188a90 | 1394 | *statusp = -1; |
a687059c | 1395 | } |
e5d73d77 | 1396 | return result; |
a687059c | 1397 | #endif |
20188a90 | 1398 | #endif |
a687059c | 1399 | } |
0f85fab0 | 1400 | #endif /* !MSDOS */ |
a687059c LW |
1401 | |
1402 | pidgone(pid,status) | |
1403 | int pid; | |
1404 | int status; | |
1405 | { | |
20188a90 | 1406 | #if defined(WAIT4) || defined(WAITPID) |
a687059c | 1407 | #else |
a687059c | 1408 | register STR *str; |
20188a90 | 1409 | char spid[16]; |
a687059c | 1410 | |
20188a90 | 1411 | sprintf(spid, "%d", pid); |
e5d73d77 | 1412 | str = hfetch(pidstatus,spid,strlen(spid),TRUE); |
20188a90 | 1413 | str->str_u.str_useful = status; |
a687059c | 1414 | #endif |
20188a90 | 1415 | return; |
a687059c LW |
1416 | } |
1417 | ||
1418 | #ifndef MEMCMP | |
1419 | memcmp(s1,s2,len) | |
1420 | register unsigned char *s1; | |
1421 | register unsigned char *s2; | |
1422 | register int len; | |
1423 | { | |
1424 | register int tmp; | |
1425 | ||
1426 | while (len--) { | |
1427 | if (tmp = *s1++ - *s2++) | |
1428 | return tmp; | |
1429 | } | |
1430 | return 0; | |
1431 | } | |
1432 | #endif /* MEMCMP */ | |
9f68db38 LW |
1433 | |
1434 | void | |
1435 | repeatcpy(to,from,len,count) | |
1436 | register char *to; | |
1437 | register char *from; | |
1438 | int len; | |
1439 | register int count; | |
1440 | { | |
1441 | register int todo; | |
1442 | register char *frombase = from; | |
1443 | ||
1444 | if (len == 1) { | |
1445 | todo = *from; | |
1446 | while (count-- > 0) | |
1447 | *to++ = todo; | |
1448 | return; | |
1449 | } | |
1450 | while (count-- > 0) { | |
1451 | for (todo = len; todo > 0; todo--) { | |
1452 | *to++ = *from++; | |
1453 | } | |
1454 | from = frombase; | |
1455 | } | |
1456 | } | |
0f85fab0 LW |
1457 | |
1458 | #ifndef CASTNEGFLOAT | |
1459 | unsigned long | |
1460 | castulong(f) | |
1461 | double f; | |
1462 | { | |
1463 | long along; | |
1464 | ||
27e2fb84 | 1465 | #if CASTFLAGS & 2 |
34de22dd LW |
1466 | # define BIGDOUBLE 2147483648.0 |
1467 | if (f >= BIGDOUBLE) | |
1468 | return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000; | |
1469 | #endif | |
0f85fab0 LW |
1470 | if (f >= 0.0) |
1471 | return (unsigned long)f; | |
1472 | along = (long)f; | |
1473 | return (unsigned long)along; | |
1474 | } | |
1475 | #endif | |
62b28dd9 LW |
1476 | |
1477 | #ifndef RENAME | |
1478 | int | |
1479 | same_dirent(a,b) | |
1480 | char *a; | |
1481 | char *b; | |
1482 | { | |
1483 | char *fa = rindex(a,'/'); | |
1484 | char *fb = rindex(b,'/'); | |
1485 | struct stat tmpstatbuf1; | |
1486 | struct stat tmpstatbuf2; | |
1487 | #ifndef MAXPATHLEN | |
1488 | #define MAXPATHLEN 1024 | |
1489 | #endif | |
1490 | char tmpbuf[MAXPATHLEN+1]; | |
1491 | ||
1492 | if (fa) | |
1493 | fa++; | |
1494 | else | |
1495 | fa = a; | |
1496 | if (fb) | |
1497 | fb++; | |
1498 | else | |
1499 | fb = b; | |
1500 | if (strNE(a,b)) | |
1501 | return FALSE; | |
1502 | if (fa == a) | |
6eb13c3b | 1503 | strcpy(tmpbuf,"."); |
62b28dd9 LW |
1504 | else |
1505 | strncpy(tmpbuf, a, fa - a); | |
1506 | if (stat(tmpbuf, &tmpstatbuf1) < 0) | |
1507 | return FALSE; | |
1508 | if (fb == b) | |
6eb13c3b | 1509 | strcpy(tmpbuf,"."); |
62b28dd9 LW |
1510 | else |
1511 | strncpy(tmpbuf, b, fb - b); | |
1512 | if (stat(tmpbuf, &tmpstatbuf2) < 0) | |
1513 | return FALSE; | |
1514 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && | |
1515 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; | |
1516 | } | |
1517 | #endif /* !RENAME */ |