Commit | Line | Data |
---|---|---|
e5d73d77 | 1 | /* $Header: util.c,v 3.0.1.9 90/10/20 02:21:01 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 $ | |
e5d73d77 LW |
9 | * Revision 3.0.1.9 90/10/20 02:21:01 lwall |
10 | * patch37: tried to take strlen of integer on systems without wait4 or waitpid | |
11 | * patch37: unreachable return eliminated | |
12 | * | |
20188a90 LW |
13 | * Revision 3.0.1.8 90/10/16 11:26:57 lwall |
14 | * patch29: added waitpid | |
15 | * patch29: various portability fixes | |
16 | * patch29: scripts now run at almost full speed under the debugger | |
17 | * | |
6eb13c3b LW |
18 | * Revision 3.0.1.7 90/08/13 22:40:26 lwall |
19 | * patch28: the NSIG hack didn't work right on Xenix | |
20 | * patch28: rename was busted on systems without rename system call | |
21 | * | |
62b28dd9 LW |
22 | * Revision 3.0.1.6 90/08/09 05:44:55 lwall |
23 | * patch19: fixed double include of <signal.h> | |
24 | * patch19: various MSDOS and OS/2 patches folded in | |
25 | * patch19: open(STDOUT,"|command") left wrong descriptor attached to STDOUT | |
26 | * | |
0f85fab0 LW |
27 | * Revision 3.0.1.5 90/03/27 16:35:13 lwall |
28 | * patch16: MSDOS support | |
29 | * patch16: support for machines that can't cast negative floats to unsigned ints | |
30 | * patch16: tail anchored pattern could dump if string to search was shorter | |
31 | * | |
9f68db38 LW |
32 | * Revision 3.0.1.4 90/03/01 10:26:48 lwall |
33 | * patch9: fbminstr() called instr() rather than ninstr() | |
34 | * patch9: nested evals clobbered their longjmp environment | |
35 | * patch9: piped opens returned undefined rather than 0 in child | |
36 | * patch9: the x operator is now up to 10 times faster | |
37 | * | |
663a0e37 LW |
38 | * Revision 3.0.1.3 89/12/21 20:27:41 lwall |
39 | * patch7: errno may now be a macro with an lvalue | |
40 | * | |
ffed7fef LW |
41 | * Revision 3.0.1.2 89/11/17 15:46:35 lwall |
42 | * patch5: BZERO separate from BCOPY now | |
43 | * patch5: byteorder now is a hex value | |
44 | * | |
ae986130 LW |
45 | * Revision 3.0.1.1 89/11/11 05:06:13 lwall |
46 | * patch2: made dup2 a little better | |
47 | * | |
a687059c LW |
48 | * Revision 3.0 89/10/18 15:32:43 lwall |
49 | * 3.0 baseline | |
8d063cd8 LW |
50 | * |
51 | */ | |
52 | ||
8d063cd8 | 53 | #include "EXTERN.h" |
8d063cd8 | 54 | #include "perl.h" |
62b28dd9 | 55 | |
6eb13c3b | 56 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
a687059c | 57 | #include <signal.h> |
62b28dd9 | 58 | #endif |
a687059c LW |
59 | |
60 | #ifdef I_VFORK | |
61 | # include <vfork.h> | |
62 | #endif | |
63 | ||
64 | #ifdef I_VARARGS | |
65 | # include <varargs.h> | |
66 | #endif | |
8d063cd8 LW |
67 | |
68 | #define FLUSH | |
8d063cd8 LW |
69 | |
70 | static char nomem[] = "Out of memory!\n"; | |
71 | ||
72 | /* paranoid version of malloc */ | |
73 | ||
378cc40b | 74 | #ifdef DEBUGGING |
8d063cd8 | 75 | static int an = 0; |
378cc40b | 76 | #endif |
8d063cd8 | 77 | |
a687059c LW |
78 | /* NOTE: Do not call the next three routines directly. Use the macros |
79 | * in handy.h, so that we can easily redefine everything to do tracking of | |
80 | * allocated hunks back to the original New to track down any memory leaks. | |
81 | */ | |
82 | ||
8d063cd8 LW |
83 | char * |
84 | safemalloc(size) | |
62b28dd9 LW |
85 | #ifdef MSDOS |
86 | unsigned long size; | |
87 | #else | |
8d063cd8 | 88 | MEM_SIZE size; |
62b28dd9 | 89 | #endif /* MSDOS */ |
8d063cd8 LW |
90 | { |
91 | char *ptr; | |
92 | char *malloc(); | |
93 | ||
62b28dd9 LW |
94 | #ifdef MSDOS |
95 | if (size > 0xffff) { | |
96 | fprintf(stderr, "Allocation too large: %lx\n", size) FLUSH; | |
97 | exit(1); | |
98 | } | |
99 | #endif /* MSDOS */ | |
8d063cd8 LW |
100 | ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
101 | #ifdef DEBUGGING | |
a687059c | 102 | # ifndef I286 |
8d063cd8 LW |
103 | if (debug & 128) |
104 | fprintf(stderr,"0x%x: (%05d) malloc %d bytes\n",ptr,an++,size); | |
a687059c LW |
105 | # else |
106 | if (debug & 128) | |
107 | fprintf(stderr,"0x%lx: (%05d) malloc %d bytes\n",ptr,an++,size); | |
108 | # endif | |
8d063cd8 LW |
109 | #endif |
110 | if (ptr != Nullch) | |
111 | return ptr; | |
112 | else { | |
113 | fputs(nomem,stdout) FLUSH; | |
114 | exit(1); | |
115 | } | |
116 | /*NOTREACHED*/ | |
a687059c LW |
117 | #ifdef lint |
118 | return ptr; | |
119 | #endif | |
8d063cd8 LW |
120 | } |
121 | ||
122 | /* paranoid version of realloc */ | |
123 | ||
124 | char * | |
125 | saferealloc(where,size) | |
126 | char *where; | |
62b28dd9 | 127 | #ifndef MSDOS |
8d063cd8 | 128 | MEM_SIZE size; |
62b28dd9 LW |
129 | #else |
130 | unsigned long size; | |
131 | #endif /* MSDOS */ | |
8d063cd8 LW |
132 | { |
133 | char *ptr; | |
134 | char *realloc(); | |
135 | ||
62b28dd9 LW |
136 | #ifdef MSDOS |
137 | if (size > 0xffff) { | |
138 | fprintf(stderr, "Reallocation too large: %lx\n", size) FLUSH; | |
139 | exit(1); | |
140 | } | |
141 | #endif /* MSDOS */ | |
378cc40b LW |
142 | if (!where) |
143 | fatal("Null realloc"); | |
8d063cd8 LW |
144 | ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */ |
145 | #ifdef DEBUGGING | |
a687059c | 146 | # ifndef I286 |
8d063cd8 LW |
147 | if (debug & 128) { |
148 | fprintf(stderr,"0x%x: (%05d) rfree\n",where,an++); | |
149 | fprintf(stderr,"0x%x: (%05d) realloc %d bytes\n",ptr,an++,size); | |
150 | } | |
a687059c LW |
151 | # else |
152 | if (debug & 128) { | |
153 | fprintf(stderr,"0x%lx: (%05d) rfree\n",where,an++); | |
154 | fprintf(stderr,"0x%lx: (%05d) realloc %d bytes\n",ptr,an++,size); | |
155 | } | |
156 | # endif | |
8d063cd8 LW |
157 | #endif |
158 | if (ptr != Nullch) | |
159 | return ptr; | |
160 | else { | |
161 | fputs(nomem,stdout) FLUSH; | |
162 | exit(1); | |
163 | } | |
164 | /*NOTREACHED*/ | |
a687059c LW |
165 | #ifdef lint |
166 | return ptr; | |
167 | #endif | |
8d063cd8 LW |
168 | } |
169 | ||
170 | /* safe version of free */ | |
171 | ||
a687059c | 172 | void |
8d063cd8 LW |
173 | safefree(where) |
174 | char *where; | |
175 | { | |
176 | #ifdef DEBUGGING | |
a687059c | 177 | # ifndef I286 |
8d063cd8 LW |
178 | if (debug & 128) |
179 | fprintf(stderr,"0x%x: (%05d) free\n",where,an++); | |
a687059c LW |
180 | # else |
181 | if (debug & 128) | |
182 | fprintf(stderr,"0x%lx: (%05d) free\n",where,an++); | |
183 | # endif | |
8d063cd8 | 184 | #endif |
378cc40b LW |
185 | if (where) { |
186 | free(where); | |
187 | } | |
8d063cd8 LW |
188 | } |
189 | ||
a687059c LW |
190 | #ifdef LEAKTEST |
191 | ||
192 | #define ALIGN sizeof(long) | |
8d063cd8 LW |
193 | |
194 | char * | |
a687059c LW |
195 | safexmalloc(x,size) |
196 | int x; | |
197 | MEM_SIZE size; | |
8d063cd8 | 198 | { |
a687059c | 199 | register char *where; |
8d063cd8 | 200 | |
a687059c LW |
201 | where = safemalloc(size + ALIGN); |
202 | xcount[x]++; | |
203 | where[0] = x % 100; | |
204 | where[1] = x / 100; | |
205 | return where + ALIGN; | |
8d063cd8 | 206 | } |
8d063cd8 LW |
207 | |
208 | char * | |
a687059c LW |
209 | safexrealloc(where,size) |
210 | char *where; | |
211 | MEM_SIZE size; | |
212 | { | |
213 | return saferealloc(where - ALIGN, size + ALIGN) + ALIGN; | |
214 | } | |
215 | ||
216 | void | |
217 | safexfree(where) | |
218 | char *where; | |
219 | { | |
220 | int x; | |
221 | ||
222 | if (!where) | |
223 | return; | |
224 | where -= ALIGN; | |
225 | x = where[0] + 100 * where[1]; | |
226 | xcount[x]--; | |
227 | safefree(where); | |
228 | } | |
229 | ||
230 | xstat() | |
8d063cd8 | 231 | { |
a687059c | 232 | register int i; |
8d063cd8 | 233 | |
a687059c LW |
234 | for (i = 0; i < MAXXCOUNT; i++) { |
235 | if (xcount[i] != lastxcount[i]) { | |
236 | fprintf(stderr,"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]); | |
237 | lastxcount[i] = xcount[i]; | |
8d063cd8 LW |
238 | } |
239 | } | |
8d063cd8 | 240 | } |
a687059c LW |
241 | |
242 | #endif /* LEAKTEST */ | |
8d063cd8 LW |
243 | |
244 | /* copy a string up to some (non-backslashed) delimiter, if any */ | |
245 | ||
246 | char * | |
a687059c | 247 | cpytill(to,from,fromend,delim,retlen) |
62b28dd9 LW |
248 | register char *to; |
249 | register char *from; | |
a687059c | 250 | register char *fromend; |
8d063cd8 | 251 | register int delim; |
a687059c | 252 | int *retlen; |
8d063cd8 | 253 | { |
a687059c LW |
254 | char *origto = to; |
255 | ||
256 | for (; from < fromend; from++,to++) { | |
378cc40b LW |
257 | if (*from == '\\') { |
258 | if (from[1] == delim) | |
259 | from++; | |
260 | else if (from[1] == '\\') | |
261 | *to++ = *from++; | |
262 | } | |
8d063cd8 LW |
263 | else if (*from == delim) |
264 | break; | |
265 | *to = *from; | |
266 | } | |
267 | *to = '\0'; | |
a687059c | 268 | *retlen = to - origto; |
8d063cd8 LW |
269 | return from; |
270 | } | |
271 | ||
272 | /* return ptr to little string in big string, NULL if not found */ | |
378cc40b | 273 | /* This routine was donated by Corey Satten. */ |
8d063cd8 LW |
274 | |
275 | char * | |
276 | instr(big, little) | |
378cc40b LW |
277 | register char *big; |
278 | register char *little; | |
279 | { | |
280 | register char *s, *x; | |
a687059c | 281 | register int first; |
378cc40b | 282 | |
a687059c LW |
283 | if (!little) |
284 | return big; | |
285 | first = *little++; | |
378cc40b LW |
286 | if (!first) |
287 | return big; | |
288 | while (*big) { | |
289 | if (*big++ != first) | |
290 | continue; | |
291 | for (x=big,s=little; *s; /**/ ) { | |
292 | if (!*x) | |
293 | return Nullch; | |
294 | if (*s++ != *x++) { | |
295 | s--; | |
296 | break; | |
297 | } | |
298 | } | |
299 | if (!*s) | |
300 | return big-1; | |
301 | } | |
302 | return Nullch; | |
303 | } | |
8d063cd8 | 304 | |
a687059c LW |
305 | /* same as instr but allow embedded nulls */ |
306 | ||
307 | char * | |
308 | ninstr(big, bigend, little, lend) | |
309 | register char *big; | |
310 | register char *bigend; | |
311 | char *little; | |
312 | char *lend; | |
8d063cd8 | 313 | { |
a687059c LW |
314 | register char *s, *x; |
315 | register int first = *little; | |
316 | register char *littleend = lend; | |
378cc40b | 317 | |
a687059c LW |
318 | if (!first && little > littleend) |
319 | return big; | |
320 | bigend -= littleend - little++; | |
321 | while (big <= bigend) { | |
322 | if (*big++ != first) | |
323 | continue; | |
324 | for (x=big,s=little; s < littleend; /**/ ) { | |
325 | if (*s++ != *x++) { | |
326 | s--; | |
327 | break; | |
328 | } | |
329 | } | |
330 | if (s >= littleend) | |
331 | return big-1; | |
378cc40b | 332 | } |
a687059c LW |
333 | return Nullch; |
334 | } | |
335 | ||
336 | /* reverse of the above--find last substring */ | |
337 | ||
338 | char * | |
339 | rninstr(big, bigend, little, lend) | |
340 | register char *big; | |
341 | char *bigend; | |
342 | char *little; | |
343 | char *lend; | |
344 | { | |
345 | register char *bigbeg; | |
346 | register char *s, *x; | |
347 | register int first = *little; | |
348 | register char *littleend = lend; | |
349 | ||
350 | if (!first && little > littleend) | |
351 | return bigend; | |
352 | bigbeg = big; | |
353 | big = bigend - (littleend - little++); | |
354 | while (big >= bigbeg) { | |
355 | if (*big-- != first) | |
356 | continue; | |
357 | for (x=big+2,s=little; s < littleend; /**/ ) { | |
358 | if (*s++ != *x++) { | |
359 | s--; | |
360 | break; | |
361 | } | |
362 | } | |
363 | if (s >= littleend) | |
364 | return big+1; | |
378cc40b | 365 | } |
a687059c | 366 | return Nullch; |
378cc40b | 367 | } |
a687059c LW |
368 | |
369 | unsigned char fold[] = { | |
370 | 0, 1, 2, 3, 4, 5, 6, 7, | |
371 | 8, 9, 10, 11, 12, 13, 14, 15, | |
372 | 16, 17, 18, 19, 20, 21, 22, 23, | |
373 | 24, 25, 26, 27, 28, 29, 30, 31, | |
374 | 32, 33, 34, 35, 36, 37, 38, 39, | |
375 | 40, 41, 42, 43, 44, 45, 46, 47, | |
376 | 48, 49, 50, 51, 52, 53, 54, 55, | |
377 | 56, 57, 58, 59, 60, 61, 62, 63, | |
378 | 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', | |
379 | 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', | |
380 | 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', | |
381 | 'x', 'y', 'z', 91, 92, 93, 94, 95, | |
382 | 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G', | |
383 | 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', | |
384 | 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', | |
385 | 'X', 'Y', 'Z', 123, 124, 125, 126, 127, | |
386 | 128, 129, 130, 131, 132, 133, 134, 135, | |
387 | 136, 137, 138, 139, 140, 141, 142, 143, | |
388 | 144, 145, 146, 147, 148, 149, 150, 151, | |
389 | 152, 153, 154, 155, 156, 157, 158, 159, | |
390 | 160, 161, 162, 163, 164, 165, 166, 167, | |
391 | 168, 169, 170, 171, 172, 173, 174, 175, | |
392 | 176, 177, 178, 179, 180, 181, 182, 183, | |
393 | 184, 185, 186, 187, 188, 189, 190, 191, | |
394 | 192, 193, 194, 195, 196, 197, 198, 199, | |
395 | 200, 201, 202, 203, 204, 205, 206, 207, | |
396 | 208, 209, 210, 211, 212, 213, 214, 215, | |
397 | 216, 217, 218, 219, 220, 221, 222, 223, | |
398 | 224, 225, 226, 227, 228, 229, 230, 231, | |
399 | 232, 233, 234, 235, 236, 237, 238, 239, | |
400 | 240, 241, 242, 243, 244, 245, 246, 247, | |
401 | 248, 249, 250, 251, 252, 253, 254, 255 | |
402 | }; | |
378cc40b LW |
403 | |
404 | static unsigned char freq[] = { | |
405 | 1, 2, 84, 151, 154, 155, 156, 157, | |
406 | 165, 246, 250, 3, 158, 7, 18, 29, | |
407 | 40, 51, 62, 73, 85, 96, 107, 118, | |
408 | 129, 140, 147, 148, 149, 150, 152, 153, | |
409 | 255, 182, 224, 205, 174, 176, 180, 217, | |
410 | 233, 232, 236, 187, 235, 228, 234, 226, | |
411 | 222, 219, 211, 195, 188, 193, 185, 184, | |
412 | 191, 183, 201, 229, 181, 220, 194, 162, | |
413 | 163, 208, 186, 202, 200, 218, 198, 179, | |
414 | 178, 214, 166, 170, 207, 199, 209, 206, | |
415 | 204, 160, 212, 216, 215, 192, 175, 173, | |
416 | 243, 172, 161, 190, 203, 189, 164, 230, | |
417 | 167, 248, 227, 244, 242, 255, 241, 231, | |
418 | 240, 253, 169, 210, 245, 237, 249, 247, | |
419 | 239, 168, 252, 251, 254, 238, 223, 221, | |
420 | 213, 225, 177, 197, 171, 196, 159, 4, | |
421 | 5, 6, 8, 9, 10, 11, 12, 13, | |
422 | 14, 15, 16, 17, 19, 20, 21, 22, | |
423 | 23, 24, 25, 26, 27, 28, 30, 31, | |
424 | 32, 33, 34, 35, 36, 37, 38, 39, | |
425 | 41, 42, 43, 44, 45, 46, 47, 48, | |
426 | 49, 50, 52, 53, 54, 55, 56, 57, | |
427 | 58, 59, 60, 61, 63, 64, 65, 66, | |
428 | 67, 68, 69, 70, 71, 72, 74, 75, | |
429 | 76, 77, 78, 79, 80, 81, 82, 83, | |
430 | 86, 87, 88, 89, 90, 91, 92, 93, | |
431 | 94, 95, 97, 98, 99, 100, 101, 102, | |
432 | 103, 104, 105, 106, 108, 109, 110, 111, | |
433 | 112, 113, 114, 115, 116, 117, 119, 120, | |
434 | 121, 122, 123, 124, 125, 126, 127, 128, | |
435 | 130, 131, 132, 133, 134, 135, 136, 137, | |
436 | 138, 139, 141, 142, 143, 144, 145, 146 | |
437 | }; | |
8d063cd8 | 438 | |
378cc40b | 439 | void |
a687059c | 440 | fbmcompile(str, iflag) |
378cc40b | 441 | STR *str; |
a687059c | 442 | int iflag; |
378cc40b | 443 | { |
a687059c LW |
444 | register unsigned char *s; |
445 | register unsigned char *table; | |
378cc40b LW |
446 | register int i; |
447 | register int len = str->str_cur; | |
448 | int rarest = 0; | |
20188a90 | 449 | unsigned int frequency = 256; |
378cc40b | 450 | |
62b28dd9 | 451 | Str_Grow(str,len+258); |
a687059c LW |
452 | #ifndef lint |
453 | table = (unsigned char*)(str->str_ptr + len + 1); | |
454 | #else | |
455 | table = Null(unsigned char*); | |
456 | #endif | |
457 | s = table - 2; | |
458 | for (i = 0; i < 256; i++) { | |
378cc40b LW |
459 | table[i] = len; |
460 | } | |
461 | i = 0; | |
a687059c LW |
462 | #ifndef lint |
463 | while (s >= (unsigned char*)(str->str_ptr)) | |
464 | #endif | |
465 | { | |
466 | if (table[*s] == len) { | |
467 | #ifndef pdp11 | |
468 | if (iflag) | |
469 | table[*s] = table[fold[*s]] = i; | |
470 | #else | |
471 | if (iflag) { | |
472 | int j; | |
473 | j = fold[*s]; | |
474 | table[j] = i; | |
475 | table[*s] = i; | |
476 | } | |
477 | #endif /* pdp11 */ | |
478 | else | |
479 | table[*s] = i; | |
480 | } | |
378cc40b LW |
481 | s--,i++; |
482 | } | |
a687059c | 483 | str->str_pok |= SP_FBM; /* deep magic */ |
378cc40b | 484 | |
a687059c LW |
485 | #ifndef lint |
486 | s = (unsigned char*)(str->str_ptr); /* deeper magic */ | |
487 | #else | |
488 | s = Null(unsigned char*); | |
489 | #endif | |
490 | if (iflag) { | |
20188a90 | 491 | register unsigned int tmp, foldtmp; |
a687059c LW |
492 | str->str_pok |= SP_CASEFOLD; |
493 | for (i = 0; i < len; i++) { | |
494 | tmp=freq[s[i]]; | |
495 | foldtmp=freq[fold[s[i]]]; | |
496 | if (tmp < frequency && foldtmp < frequency) { | |
497 | rarest = i; | |
498 | /* choose most frequent among the two */ | |
499 | frequency = (tmp > foldtmp) ? tmp : foldtmp; | |
500 | } | |
501 | } | |
502 | } | |
503 | else { | |
504 | for (i = 0; i < len; i++) { | |
505 | if (freq[s[i]] < frequency) { | |
506 | rarest = i; | |
507 | frequency = freq[s[i]]; | |
508 | } | |
378cc40b LW |
509 | } |
510 | } | |
511 | str->str_rare = s[rarest]; | |
a687059c | 512 | str->str_state = rarest; |
378cc40b LW |
513 | #ifdef DEBUGGING |
514 | if (debug & 512) | |
a687059c | 515 | fprintf(stderr,"rarest char %c at %d\n",str->str_rare, str->str_state); |
378cc40b LW |
516 | #endif |
517 | } | |
518 | ||
378cc40b LW |
519 | char * |
520 | fbminstr(big, bigend, littlestr) | |
a687059c LW |
521 | unsigned char *big; |
522 | register unsigned char *bigend; | |
378cc40b LW |
523 | STR *littlestr; |
524 | { | |
a687059c | 525 | register unsigned char *s; |
378cc40b LW |
526 | register int tmp; |
527 | register int littlelen; | |
a687059c LW |
528 | register unsigned char *little; |
529 | register unsigned char *table; | |
530 | register unsigned char *olds; | |
531 | register unsigned char *oldlittle; | |
378cc40b | 532 | |
a687059c LW |
533 | #ifndef lint |
534 | if (!(littlestr->str_pok & SP_FBM)) | |
9f68db38 LW |
535 | return ninstr((char*)big,(char*)bigend, |
536 | littlestr->str_ptr, littlestr->str_ptr + littlestr->str_cur); | |
a687059c | 537 | #endif |
378cc40b LW |
538 | |
539 | littlelen = littlestr->str_cur; | |
a687059c LW |
540 | #ifndef lint |
541 | if (littlestr->str_pok & SP_TAIL && !multiline) { /* tail anchored? */ | |
0f85fab0 LW |
542 | if (littlelen > bigend - big) |
543 | return Nullch; | |
a687059c LW |
544 | little = (unsigned char*)littlestr->str_ptr; |
545 | if (littlestr->str_pok & SP_CASEFOLD) { /* oops, fake it */ | |
546 | big = bigend - littlelen; /* just start near end */ | |
547 | if (bigend[-1] == '\n' && little[littlelen-1] != '\n') | |
548 | big--; | |
378cc40b LW |
549 | } |
550 | else { | |
a687059c LW |
551 | s = bigend - littlelen; |
552 | if (*s == *little && bcmp(s,little,littlelen)==0) | |
553 | return (char*)s; /* how sweet it is */ | |
554 | else if (bigend[-1] == '\n' && little[littlelen-1] != '\n') { | |
555 | s--; | |
556 | if (*s == *little && bcmp(s,little,littlelen)==0) | |
557 | return (char*)s; | |
558 | } | |
559 | return Nullch; | |
560 | } | |
561 | } | |
562 | table = (unsigned char*)(littlestr->str_ptr + littlelen + 1); | |
563 | #else | |
564 | table = Null(unsigned char*); | |
565 | #endif | |
62b28dd9 LW |
566 | if (--littlelen >= bigend - big) |
567 | return Nullch; | |
568 | s = big + littlelen; | |
a687059c LW |
569 | oldlittle = little = table - 2; |
570 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insensitive? */ | |
20188a90 | 571 | if (s < bigend) { |
a687059c LW |
572 | top1: |
573 | if (tmp = table[*s]) { | |
62b28dd9 LW |
574 | #ifdef POINTERRIGOR |
575 | if (bigend - s > tmp) { | |
576 | s += tmp; | |
577 | goto top1; | |
578 | } | |
579 | #else | |
580 | if ((s += tmp) < bigend) | |
581 | goto top1; | |
582 | #endif | |
583 | return Nullch; | |
a687059c LW |
584 | } |
585 | else { | |
586 | tmp = littlelen; /* less expensive than calling strncmp() */ | |
587 | olds = s; | |
588 | while (tmp--) { | |
589 | if (*--s == *--little || fold[*s] == *little) | |
590 | continue; | |
591 | s = olds + 1; /* here we pay the price for failure */ | |
592 | little = oldlittle; | |
593 | if (s < bigend) /* fake up continue to outer loop */ | |
594 | goto top1; | |
595 | return Nullch; | |
596 | } | |
597 | #ifndef lint | |
598 | return (char *)s; | |
599 | #endif | |
600 | } | |
601 | } | |
602 | } | |
603 | else { | |
20188a90 | 604 | if (s < bigend) { |
a687059c LW |
605 | top2: |
606 | if (tmp = table[*s]) { | |
62b28dd9 LW |
607 | #ifdef POINTERRIGOR |
608 | if (bigend - s > tmp) { | |
609 | s += tmp; | |
610 | goto top2; | |
611 | } | |
612 | #else | |
613 | if ((s += tmp) < bigend) | |
614 | goto top2; | |
615 | #endif | |
616 | return Nullch; | |
a687059c LW |
617 | } |
618 | else { | |
619 | tmp = littlelen; /* less expensive than calling strncmp() */ | |
620 | olds = s; | |
621 | while (tmp--) { | |
622 | if (*--s == *--little) | |
623 | continue; | |
624 | s = olds + 1; /* here we pay the price for failure */ | |
625 | little = oldlittle; | |
626 | if (s < bigend) /* fake up continue to outer loop */ | |
627 | goto top2; | |
628 | return Nullch; | |
629 | } | |
630 | #ifndef lint | |
631 | return (char *)s; | |
632 | #endif | |
378cc40b | 633 | } |
378cc40b LW |
634 | } |
635 | } | |
636 | return Nullch; | |
637 | } | |
638 | ||
639 | char * | |
640 | screaminstr(bigstr, littlestr) | |
641 | STR *bigstr; | |
642 | STR *littlestr; | |
643 | { | |
a687059c LW |
644 | register unsigned char *s, *x; |
645 | register unsigned char *big; | |
378cc40b LW |
646 | register int pos; |
647 | register int previous; | |
648 | register int first; | |
a687059c LW |
649 | register unsigned char *little; |
650 | register unsigned char *bigend; | |
651 | register unsigned char *littleend; | |
378cc40b LW |
652 | |
653 | if ((pos = screamfirst[littlestr->str_rare]) < 0) | |
654 | return Nullch; | |
a687059c LW |
655 | #ifndef lint |
656 | little = (unsigned char *)(littlestr->str_ptr); | |
657 | #else | |
658 | little = Null(unsigned char *); | |
659 | #endif | |
660 | littleend = little + littlestr->str_cur; | |
378cc40b | 661 | first = *little++; |
a687059c LW |
662 | previous = littlestr->str_state; |
663 | #ifndef lint | |
664 | big = (unsigned char *)(bigstr->str_ptr); | |
665 | #else | |
666 | big = Null(unsigned char*); | |
667 | #endif | |
668 | bigend = big + bigstr->str_cur; | |
378cc40b LW |
669 | big -= previous; |
670 | while (pos < previous) { | |
a687059c | 671 | #ifndef lint |
378cc40b | 672 | if (!(pos += screamnext[pos])) |
a687059c | 673 | #endif |
378cc40b LW |
674 | return Nullch; |
675 | } | |
a687059c LW |
676 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insignificant? */ |
677 | do { | |
678 | if (big[pos] != first && big[pos] != fold[first]) | |
679 | continue; | |
680 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { | |
681 | if (x >= bigend) | |
682 | return Nullch; | |
683 | if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) { | |
684 | s--; | |
685 | break; | |
686 | } | |
687 | } | |
688 | if (s == littleend) | |
689 | #ifndef lint | |
690 | return (char *)(big+pos); | |
691 | #else | |
8d063cd8 | 692 | return Nullch; |
a687059c LW |
693 | #endif |
694 | } while ( | |
695 | #ifndef lint | |
696 | pos += screamnext[pos] /* does this goof up anywhere? */ | |
697 | #else | |
698 | pos += screamnext[0] | |
699 | #endif | |
700 | ); | |
701 | } | |
702 | else { | |
703 | do { | |
704 | if (big[pos] != first) | |
705 | continue; | |
706 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { | |
707 | if (x >= bigend) | |
708 | return Nullch; | |
709 | if (*s++ != *x++) { | |
710 | s--; | |
711 | break; | |
712 | } | |
378cc40b | 713 | } |
a687059c LW |
714 | if (s == littleend) |
715 | #ifndef lint | |
716 | return (char *)(big+pos); | |
717 | #else | |
718 | return Nullch; | |
719 | #endif | |
720 | } while ( | |
721 | #ifndef lint | |
722 | pos += screamnext[pos] | |
723 | #else | |
724 | pos += screamnext[0] | |
725 | #endif | |
726 | ); | |
727 | } | |
8d063cd8 LW |
728 | return Nullch; |
729 | } | |
730 | ||
731 | /* copy a string to a safe spot */ | |
732 | ||
733 | char * | |
734 | savestr(str) | |
735 | char *str; | |
736 | { | |
a687059c | 737 | register char *newaddr; |
8d063cd8 | 738 | |
a687059c | 739 | New(902,newaddr,strlen(str)+1,char); |
8d063cd8 LW |
740 | (void)strcpy(newaddr,str); |
741 | return newaddr; | |
742 | } | |
743 | ||
a687059c LW |
744 | /* same thing but with a known length */ |
745 | ||
746 | char * | |
747 | nsavestr(str, len) | |
748 | char *str; | |
749 | register int len; | |
750 | { | |
751 | register char *newaddr; | |
752 | ||
753 | New(903,newaddr,len+1,char); | |
754 | (void)bcopy(str,newaddr,len); /* might not be null terminated */ | |
755 | newaddr[len] = '\0'; /* is now */ | |
756 | return newaddr; | |
757 | } | |
758 | ||
8d063cd8 LW |
759 | /* grow a static string to at least a certain length */ |
760 | ||
761 | void | |
762 | growstr(strptr,curlen,newlen) | |
763 | char **strptr; | |
764 | int *curlen; | |
765 | int newlen; | |
766 | { | |
767 | if (newlen > *curlen) { /* need more room? */ | |
768 | if (*curlen) | |
a687059c | 769 | Renew(*strptr,newlen,char); |
8d063cd8 | 770 | else |
a687059c | 771 | New(905,*strptr,newlen,char); |
8d063cd8 LW |
772 | *curlen = newlen; |
773 | } | |
774 | } | |
775 | ||
a687059c | 776 | #ifndef VARARGS |
378cc40b LW |
777 | /*VARARGS1*/ |
778 | mess(pat,a1,a2,a3,a4) | |
779 | char *pat; | |
a687059c | 780 | long a1, a2, a3, a4; |
378cc40b LW |
781 | { |
782 | char *s; | |
783 | ||
a687059c LW |
784 | s = buf; |
785 | (void)sprintf(s,pat,a1,a2,a3,a4); | |
378cc40b LW |
786 | s += strlen(s); |
787 | if (s[-1] != '\n') { | |
62b28dd9 | 788 | if (curcmd->c_line) { |
20188a90 LW |
789 | (void)sprintf(s," at %s line %ld", |
790 | stab_val(curcmd->c_filestab)->str_ptr, (long)curcmd->c_line); | |
378cc40b LW |
791 | s += strlen(s); |
792 | } | |
793 | if (last_in_stab && | |
a687059c LW |
794 | stab_io(last_in_stab) && |
795 | stab_io(last_in_stab)->lines ) { | |
796 | (void)sprintf(s,", <%s> line %ld", | |
797 | last_in_stab == argvstab ? "" : stab_name(last_in_stab), | |
798 | (long)stab_io(last_in_stab)->lines); | |
378cc40b LW |
799 | s += strlen(s); |
800 | } | |
a687059c | 801 | (void)strcpy(s,".\n"); |
378cc40b LW |
802 | } |
803 | } | |
804 | ||
8d063cd8 LW |
805 | /*VARARGS1*/ |
806 | fatal(pat,a1,a2,a3,a4) | |
807 | char *pat; | |
a687059c | 808 | long a1, a2, a3, a4; |
8d063cd8 LW |
809 | { |
810 | extern FILE *e_fp; | |
811 | extern char *e_tmpname; | |
9f68db38 | 812 | char *tmps; |
8d063cd8 | 813 | |
378cc40b | 814 | mess(pat,a1,a2,a3,a4); |
a559c259 | 815 | if (in_eval) { |
a687059c | 816 | str_set(stab_val(stabent("@",TRUE)),buf); |
9f68db38 LW |
817 | tmps = "_EVAL_"; |
818 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || | |
819 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { | |
820 | #ifdef DEBUGGING | |
821 | if (debug & 4) { | |
822 | deb("(Skipping label #%d %s)\n",loop_ptr, | |
823 | loop_stack[loop_ptr].loop_label); | |
824 | } | |
825 | #endif | |
826 | loop_ptr--; | |
827 | } | |
828 | #ifdef DEBUGGING | |
829 | if (debug & 4) { | |
830 | deb("(Found label #%d %s)\n",loop_ptr, | |
831 | loop_stack[loop_ptr].loop_label); | |
832 | } | |
833 | #endif | |
834 | if (loop_ptr < 0) { | |
835 | in_eval = 0; | |
836 | fatal("Bad label: %s", tmps); | |
837 | } | |
838 | longjmp(loop_stack[loop_ptr].loop_env, 1); | |
a559c259 | 839 | } |
a687059c LW |
840 | fputs(buf,stderr); |
841 | (void)fflush(stderr); | |
8d063cd8 | 842 | if (e_fp) |
a687059c | 843 | (void)UNLINK(e_tmpname); |
378cc40b LW |
844 | statusvalue >>= 8; |
845 | exit(errno?errno:(statusvalue?statusvalue:255)); | |
846 | } | |
847 | ||
848 | /*VARARGS1*/ | |
849 | warn(pat,a1,a2,a3,a4) | |
850 | char *pat; | |
a687059c | 851 | long a1, a2, a3, a4; |
378cc40b LW |
852 | { |
853 | mess(pat,a1,a2,a3,a4); | |
a687059c LW |
854 | fputs(buf,stderr); |
855 | #ifdef LEAKTEST | |
856 | #ifdef DEBUGGING | |
857 | if (debug & 4096) | |
858 | xstat(); | |
859 | #endif | |
860 | #endif | |
861 | (void)fflush(stderr); | |
8d063cd8 | 862 | } |
a687059c LW |
863 | #else |
864 | /*VARARGS0*/ | |
865 | mess(args) | |
866 | va_list args; | |
867 | { | |
868 | char *pat; | |
869 | char *s; | |
870 | #ifdef CHARVSPRINTF | |
871 | char *vsprintf(); | |
872 | #else | |
873 | int vsprintf(); | |
874 | #endif | |
875 | ||
876 | s = buf; | |
877 | #ifdef lint | |
878 | pat = Nullch; | |
879 | #else | |
880 | pat = va_arg(args, char *); | |
881 | #endif | |
882 | (void) vsprintf(s,pat,args); | |
883 | ||
884 | s += strlen(s); | |
885 | if (s[-1] != '\n') { | |
62b28dd9 | 886 | if (curcmd->c_line) { |
20188a90 LW |
887 | (void)sprintf(s," at %s line %ld", |
888 | stab_val(curcmd->c_filestab)->str_ptr, (long)curcmd->c_line); | |
a687059c LW |
889 | s += strlen(s); |
890 | } | |
891 | if (last_in_stab && | |
892 | stab_io(last_in_stab) && | |
893 | stab_io(last_in_stab)->lines ) { | |
894 | (void)sprintf(s,", <%s> line %ld", | |
895 | last_in_stab == argvstab ? "" : last_in_stab->str_magic->str_ptr, | |
896 | (long)stab_io(last_in_stab)->lines); | |
897 | s += strlen(s); | |
898 | } | |
899 | (void)strcpy(s,".\n"); | |
900 | } | |
901 | } | |
902 | ||
903 | /*VARARGS0*/ | |
904 | fatal(va_alist) | |
905 | va_dcl | |
906 | { | |
907 | va_list args; | |
908 | extern FILE *e_fp; | |
909 | extern char *e_tmpname; | |
9f68db38 | 910 | char *tmps; |
a687059c LW |
911 | |
912 | #ifndef lint | |
913 | va_start(args); | |
914 | #else | |
915 | args = 0; | |
916 | #endif | |
917 | mess(args); | |
918 | va_end(args); | |
919 | if (in_eval) { | |
920 | str_set(stab_val(stabent("@",TRUE)),buf); | |
9f68db38 LW |
921 | tmps = "_EVAL_"; |
922 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || | |
923 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { | |
924 | #ifdef DEBUGGING | |
925 | if (debug & 4) { | |
926 | deb("(Skipping label #%d %s)\n",loop_ptr, | |
927 | loop_stack[loop_ptr].loop_label); | |
928 | } | |
929 | #endif | |
930 | loop_ptr--; | |
931 | } | |
932 | #ifdef DEBUGGING | |
933 | if (debug & 4) { | |
934 | deb("(Found label #%d %s)\n",loop_ptr, | |
935 | loop_stack[loop_ptr].loop_label); | |
936 | } | |
937 | #endif | |
938 | if (loop_ptr < 0) { | |
939 | in_eval = 0; | |
940 | fatal("Bad label: %s", tmps); | |
941 | } | |
942 | longjmp(loop_stack[loop_ptr].loop_env, 1); | |
a687059c LW |
943 | } |
944 | fputs(buf,stderr); | |
945 | (void)fflush(stderr); | |
946 | if (e_fp) | |
947 | (void)UNLINK(e_tmpname); | |
948 | statusvalue >>= 8; | |
949 | exit((int)(errno?errno:(statusvalue?statusvalue:255))); | |
950 | } | |
951 | ||
952 | /*VARARGS0*/ | |
953 | warn(va_alist) | |
954 | va_dcl | |
955 | { | |
956 | va_list args; | |
957 | ||
958 | #ifndef lint | |
959 | va_start(args); | |
960 | #else | |
961 | args = 0; | |
962 | #endif | |
963 | mess(args); | |
964 | va_end(args); | |
965 | ||
966 | fputs(buf,stderr); | |
967 | #ifdef LEAKTEST | |
968 | #ifdef DEBUGGING | |
969 | if (debug & 4096) | |
970 | xstat(); | |
971 | #endif | |
972 | #endif | |
973 | (void)fflush(stderr); | |
974 | } | |
975 | #endif | |
8d063cd8 LW |
976 | |
977 | static bool firstsetenv = TRUE; | |
978 | extern char **environ; | |
979 | ||
980 | void | |
981 | setenv(nam,val) | |
982 | char *nam, *val; | |
983 | { | |
984 | register int i=envix(nam); /* where does it go? */ | |
985 | ||
a687059c LW |
986 | if (!val) { |
987 | while (environ[i]) { | |
988 | environ[i] = environ[i+1]; | |
989 | i++; | |
990 | } | |
991 | return; | |
992 | } | |
8d063cd8 LW |
993 | if (!environ[i]) { /* does not exist yet */ |
994 | if (firstsetenv) { /* need we copy environment? */ | |
995 | int j; | |
a687059c LW |
996 | char **tmpenv; |
997 | ||
998 | New(901,tmpenv, i+2, char*); | |
8d063cd8 LW |
999 | firstsetenv = FALSE; |
1000 | for (j=0; j<i; j++) /* copy environment */ | |
1001 | tmpenv[j] = environ[j]; | |
1002 | environ = tmpenv; /* tell exec where it is now */ | |
1003 | } | |
8d063cd8 | 1004 | else |
a687059c | 1005 | Renew(environ, i+2, char*); /* just expand it a bit */ |
8d063cd8 LW |
1006 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
1007 | } | |
a687059c | 1008 | New(904, environ[i], strlen(nam) + strlen(val) + 2, char); |
8d063cd8 LW |
1009 | /* this may or may not be in */ |
1010 | /* the old environ structure */ | |
62b28dd9 | 1011 | #ifndef MSDOS |
a687059c | 1012 | (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */ |
62b28dd9 LW |
1013 | #else |
1014 | /* MS-DOS requires environment variable names to be in uppercase */ | |
1015 | strcpy(environ[i],nam); strupr(environ[i],nam); | |
1016 | (void)sprintf(environ[i] + strlen(nam),"=%s",val); | |
1017 | #endif /* MSDOS */ | |
8d063cd8 LW |
1018 | } |
1019 | ||
1020 | int | |
1021 | envix(nam) | |
1022 | char *nam; | |
1023 | { | |
1024 | register int i, len = strlen(nam); | |
1025 | ||
1026 | for (i = 0; environ[i]; i++) { | |
1027 | if (strnEQ(environ[i],nam,len) && environ[i][len] == '=') | |
1028 | break; /* strnEQ must come first to avoid */ | |
1029 | } /* potential SEGV's */ | |
1030 | return i; | |
1031 | } | |
378cc40b LW |
1032 | |
1033 | #ifdef EUNICE | |
1034 | unlnk(f) /* unlink all versions of a file */ | |
1035 | char *f; | |
1036 | { | |
1037 | int i; | |
1038 | ||
1039 | for (i = 0; unlink(f) >= 0; i++) ; | |
1040 | return i ? 0 : -1; | |
1041 | } | |
1042 | #endif | |
1043 | ||
378cc40b | 1044 | #ifndef MEMCPY |
ffed7fef | 1045 | #ifndef BCOPY |
378cc40b LW |
1046 | char * |
1047 | bcopy(from,to,len) | |
1048 | register char *from; | |
1049 | register char *to; | |
1050 | register int len; | |
1051 | { | |
1052 | char *retval = to; | |
1053 | ||
1054 | while (len--) | |
1055 | *to++ = *from++; | |
1056 | return retval; | |
1057 | } | |
ffed7fef | 1058 | #endif |
378cc40b | 1059 | |
ffed7fef | 1060 | #ifndef BZERO |
378cc40b LW |
1061 | char * |
1062 | bzero(loc,len) | |
1063 | register char *loc; | |
1064 | register int len; | |
1065 | { | |
1066 | char *retval = loc; | |
1067 | ||
1068 | while (len--) | |
1069 | *loc++ = 0; | |
1070 | return retval; | |
1071 | } | |
1072 | #endif | |
1073 | #endif | |
a687059c LW |
1074 | |
1075 | #ifdef VARARGS | |
1076 | #ifndef VPRINTF | |
1077 | ||
1078 | #ifdef CHARVSPRINTF | |
1079 | char * | |
1080 | #else | |
1081 | int | |
1082 | #endif | |
1083 | vsprintf(dest, pat, args) | |
1084 | char *dest, *pat, *args; | |
1085 | { | |
1086 | FILE fakebuf; | |
1087 | ||
1088 | fakebuf._ptr = dest; | |
1089 | fakebuf._cnt = 32767; | |
1090 | fakebuf._flag = _IOWRT|_IOSTRG; | |
1091 | _doprnt(pat, args, &fakebuf); /* what a kludge */ | |
1092 | (void)putc('\0', &fakebuf); | |
1093 | #ifdef CHARVSPRINTF | |
1094 | return(dest); | |
1095 | #else | |
1096 | return 0; /* perl doesn't use return value */ | |
1097 | #endif | |
1098 | } | |
1099 | ||
1100 | #ifdef DEBUGGING | |
1101 | int | |
1102 | vfprintf(fd, pat, args) | |
1103 | FILE *fd; | |
1104 | char *pat, *args; | |
1105 | { | |
1106 | _doprnt(pat, args, fd); | |
1107 | return 0; /* wrong, but perl doesn't use the return value */ | |
1108 | } | |
1109 | #endif | |
1110 | #endif /* VPRINTF */ | |
1111 | #endif /* VARARGS */ | |
1112 | ||
1113 | #ifdef MYSWAP | |
ffed7fef | 1114 | #if BYTEORDER != 0x4321 |
a687059c LW |
1115 | short |
1116 | my_swap(s) | |
1117 | short s; | |
1118 | { | |
1119 | #if (BYTEORDER & 1) == 0 | |
1120 | short result; | |
1121 | ||
1122 | result = ((s & 255) << 8) + ((s >> 8) & 255); | |
1123 | return result; | |
1124 | #else | |
1125 | return s; | |
1126 | #endif | |
1127 | } | |
1128 | ||
1129 | long | |
1130 | htonl(l) | |
1131 | register long l; | |
1132 | { | |
1133 | union { | |
1134 | long result; | |
ffed7fef | 1135 | char c[sizeof(long)]; |
a687059c LW |
1136 | } u; |
1137 | ||
ffed7fef | 1138 | #if BYTEORDER == 0x1234 |
a687059c LW |
1139 | u.c[0] = (l >> 24) & 255; |
1140 | u.c[1] = (l >> 16) & 255; | |
1141 | u.c[2] = (l >> 8) & 255; | |
1142 | u.c[3] = l & 255; | |
1143 | return u.result; | |
1144 | #else | |
ffed7fef | 1145 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
a687059c LW |
1146 | fatal("Unknown BYTEORDER\n"); |
1147 | #else | |
1148 | register int o; | |
1149 | register int s; | |
1150 | ||
ffed7fef LW |
1151 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1152 | u.c[o & 0xf] = (l >> s) & 255; | |
a687059c LW |
1153 | } |
1154 | return u.result; | |
1155 | #endif | |
1156 | #endif | |
1157 | } | |
1158 | ||
1159 | long | |
1160 | ntohl(l) | |
1161 | register long l; | |
1162 | { | |
1163 | union { | |
1164 | long l; | |
ffed7fef | 1165 | char c[sizeof(long)]; |
a687059c LW |
1166 | } u; |
1167 | ||
ffed7fef | 1168 | #if BYTEORDER == 0x1234 |
a687059c LW |
1169 | u.c[0] = (l >> 24) & 255; |
1170 | u.c[1] = (l >> 16) & 255; | |
1171 | u.c[2] = (l >> 8) & 255; | |
1172 | u.c[3] = l & 255; | |
1173 | return u.l; | |
1174 | #else | |
ffed7fef | 1175 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
a687059c LW |
1176 | fatal("Unknown BYTEORDER\n"); |
1177 | #else | |
1178 | register int o; | |
1179 | register int s; | |
1180 | ||
1181 | u.l = l; | |
1182 | l = 0; | |
ffed7fef LW |
1183 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1184 | l |= (u.c[o & 0xf] & 255) << s; | |
a687059c LW |
1185 | } |
1186 | return l; | |
1187 | #endif | |
1188 | #endif | |
1189 | } | |
1190 | ||
ffed7fef | 1191 | #endif /* BYTEORDER != 0x4321 */ |
a687059c LW |
1192 | #endif /* HTONS */ |
1193 | ||
0f85fab0 | 1194 | #ifndef MSDOS |
a687059c LW |
1195 | FILE * |
1196 | mypopen(cmd,mode) | |
1197 | char *cmd; | |
1198 | char *mode; | |
1199 | { | |
1200 | int p[2]; | |
1201 | register int this, that; | |
1202 | register int pid; | |
1203 | STR *str; | |
1204 | int doexec = strNE(cmd,"-"); | |
1205 | ||
1206 | if (pipe(p) < 0) | |
1207 | return Nullfp; | |
1208 | this = (*mode == 'w'); | |
1209 | that = !this; | |
1210 | while ((pid = (doexec?vfork():fork())) < 0) { | |
1211 | if (errno != EAGAIN) { | |
1212 | close(p[this]); | |
1213 | if (!doexec) | |
1214 | fatal("Can't fork"); | |
1215 | return Nullfp; | |
1216 | } | |
1217 | sleep(5); | |
1218 | } | |
1219 | if (pid == 0) { | |
1220 | #define THIS that | |
1221 | #define THAT this | |
1222 | close(p[THAT]); | |
1223 | if (p[THIS] != (*mode == 'r')) { | |
1224 | dup2(p[THIS], *mode == 'r'); | |
1225 | close(p[THIS]); | |
1226 | } | |
1227 | if (doexec) { | |
ae986130 LW |
1228 | #if !defined(FCNTL) || !defined(F_SETFD) |
1229 | int fd; | |
1230 | ||
1231 | #ifndef NOFILE | |
1232 | #define NOFILE 20 | |
1233 | #endif | |
1234 | for (fd = 3; fd < NOFILE; fd++) | |
1235 | close(fd); | |
1236 | #endif | |
a687059c LW |
1237 | do_exec(cmd); /* may or may not use the shell */ |
1238 | _exit(1); | |
1239 | } | |
1240 | if (tmpstab = stabent("$",allstabs)) | |
1241 | str_numset(STAB_STR(tmpstab),(double)getpid()); | |
9f68db38 | 1242 | forkprocess = 0; |
20188a90 | 1243 | hclear(pidstatus); /* we have no children */ |
a687059c LW |
1244 | return Nullfp; |
1245 | #undef THIS | |
1246 | #undef THAT | |
1247 | } | |
62b28dd9 | 1248 | do_execfree(); /* free any memory malloced by child on vfork */ |
a687059c | 1249 | close(p[that]); |
62b28dd9 LW |
1250 | if (p[that] < p[this]) { |
1251 | dup2(p[this], p[that]); | |
1252 | close(p[this]); | |
1253 | p[this] = p[that]; | |
1254 | } | |
20188a90 LW |
1255 | str = afetch(fdpid,p[this],TRUE); |
1256 | str->str_u.str_useful = pid; | |
a687059c LW |
1257 | forkprocess = pid; |
1258 | return fdopen(p[this], mode); | |
1259 | } | |
0f85fab0 | 1260 | #endif /* !MSDOS */ |
a687059c | 1261 | |
ae986130 LW |
1262 | #ifdef NOTDEF |
1263 | dumpfds(s) | |
1264 | char *s; | |
1265 | { | |
1266 | int fd; | |
1267 | struct stat tmpstatbuf; | |
1268 | ||
1269 | fprintf(stderr,"%s", s); | |
1270 | for (fd = 0; fd < 32; fd++) { | |
1271 | if (fstat(fd,&tmpstatbuf) >= 0) | |
1272 | fprintf(stderr," %d",fd); | |
1273 | } | |
1274 | fprintf(stderr,"\n"); | |
1275 | } | |
1276 | #endif | |
1277 | ||
a687059c LW |
1278 | #ifndef DUP2 |
1279 | dup2(oldfd,newfd) | |
1280 | int oldfd; | |
1281 | int newfd; | |
1282 | { | |
62b28dd9 LW |
1283 | #if defined(FCNTL) && defined(F_DUPFD) |
1284 | close(newfd); | |
1285 | fcntl(oldfd, F_DUPFD, newfd); | |
1286 | #else | |
1287 | int fdtmp[20]; | |
ae986130 LW |
1288 | int fdx = 0; |
1289 | int fd; | |
1290 | ||
a687059c | 1291 | close(newfd); |
ae986130 LW |
1292 | while ((fd = dup(oldfd)) != newfd) /* good enough for low fd's */ |
1293 | fdtmp[fdx++] = fd; | |
1294 | while (fdx > 0) | |
1295 | close(fdtmp[--fdx]); | |
62b28dd9 | 1296 | #endif |
a687059c LW |
1297 | } |
1298 | #endif | |
1299 | ||
0f85fab0 | 1300 | #ifndef MSDOS |
a687059c LW |
1301 | int |
1302 | mypclose(ptr) | |
1303 | FILE *ptr; | |
1304 | { | |
a687059c LW |
1305 | #ifdef VOIDSIG |
1306 | void (*hstat)(), (*istat)(), (*qstat)(); | |
1307 | #else | |
1308 | int (*hstat)(), (*istat)(), (*qstat)(); | |
1309 | #endif | |
1310 | int status; | |
1311 | STR *str; | |
20188a90 | 1312 | int pid; |
a687059c | 1313 | |
20188a90 LW |
1314 | str = afetch(fdpid,fileno(ptr),TRUE); |
1315 | astore(fdpid,fileno(ptr),Nullstr); | |
a687059c | 1316 | fclose(ptr); |
20188a90 | 1317 | pid = (int)str->str_u.str_useful; |
a687059c LW |
1318 | hstat = signal(SIGHUP, SIG_IGN); |
1319 | istat = signal(SIGINT, SIG_IGN); | |
1320 | qstat = signal(SIGQUIT, SIG_IGN); | |
20188a90 LW |
1321 | pid = wait4pid(pid, &status, 0); |
1322 | signal(SIGHUP, hstat); | |
1323 | signal(SIGINT, istat); | |
1324 | signal(SIGQUIT, qstat); | |
1325 | return(pid < 0 ? pid : status); | |
1326 | } | |
1327 | ||
1328 | int | |
1329 | wait4pid(pid,statusp,flags) | |
1330 | int pid; | |
1331 | int *statusp; | |
1332 | int flags; | |
1333 | { | |
1334 | int result; | |
1335 | STR *str; | |
1336 | char spid[16]; | |
1337 | ||
1338 | if (!pid) | |
1339 | return -1; | |
a687059c | 1340 | #ifdef WAIT4 |
20188a90 | 1341 | return wait4(pid,statusp,flags,Null(struct rusage *)); |
a687059c | 1342 | #else |
20188a90 LW |
1343 | #ifdef WAITPID |
1344 | return waitpid(pid,statusp,flags); | |
1345 | #else | |
1346 | if (pid > 0) { | |
1347 | sprintf(spid, "%d", pid); | |
e5d73d77 | 1348 | str = hfetch(pidstatus,spid,strlen(spid),FALSE); |
20188a90 LW |
1349 | if (str != &str_undef) { |
1350 | *statusp = (int)str->str_u.str_useful; | |
e5d73d77 | 1351 | hdelete(pidstatus,spid,strlen(spid)); |
20188a90 LW |
1352 | return pid; |
1353 | } | |
1354 | } | |
1355 | else { | |
1356 | HENT *entry; | |
1357 | ||
1358 | hiterinit(pidstatus); | |
1359 | if (entry = hiternext(pidstatus)) { | |
1360 | pid = atoi(hiterkey(entry,statusp)); | |
1361 | str = hiterval(entry); | |
1362 | *statusp = (int)str->str_u.str_useful; | |
1363 | sprintf(spid, "%d", pid); | |
e5d73d77 | 1364 | hdelete(pidstatus,spid,strlen(spid)); |
20188a90 LW |
1365 | return pid; |
1366 | } | |
1367 | } | |
1368 | if (flags) | |
1369 | fatal("Can't do waitpid with flags"); | |
a687059c | 1370 | else { |
62b28dd9 | 1371 | int result; |
20188a90 LW |
1372 | register int count; |
1373 | register STR *str; | |
62b28dd9 | 1374 | |
20188a90 LW |
1375 | while ((result = wait(statusp)) != pid && pid > 0 && result >= 0) |
1376 | pidgone(result,*statusp); | |
a687059c | 1377 | if (result < 0) |
20188a90 | 1378 | *statusp = -1; |
a687059c | 1379 | } |
e5d73d77 | 1380 | return result; |
a687059c | 1381 | #endif |
20188a90 | 1382 | #endif |
a687059c | 1383 | } |
0f85fab0 | 1384 | #endif /* !MSDOS */ |
a687059c LW |
1385 | |
1386 | pidgone(pid,status) | |
1387 | int pid; | |
1388 | int status; | |
1389 | { | |
20188a90 | 1390 | #if defined(WAIT4) || defined(WAITPID) |
a687059c | 1391 | #else |
a687059c | 1392 | register STR *str; |
20188a90 | 1393 | char spid[16]; |
a687059c | 1394 | |
20188a90 | 1395 | sprintf(spid, "%d", pid); |
e5d73d77 | 1396 | str = hfetch(pidstatus,spid,strlen(spid),TRUE); |
20188a90 | 1397 | str->str_u.str_useful = status; |
a687059c | 1398 | #endif |
20188a90 | 1399 | return; |
a687059c LW |
1400 | } |
1401 | ||
1402 | #ifndef MEMCMP | |
1403 | memcmp(s1,s2,len) | |
1404 | register unsigned char *s1; | |
1405 | register unsigned char *s2; | |
1406 | register int len; | |
1407 | { | |
1408 | register int tmp; | |
1409 | ||
1410 | while (len--) { | |
1411 | if (tmp = *s1++ - *s2++) | |
1412 | return tmp; | |
1413 | } | |
1414 | return 0; | |
1415 | } | |
1416 | #endif /* MEMCMP */ | |
9f68db38 LW |
1417 | |
1418 | void | |
1419 | repeatcpy(to,from,len,count) | |
1420 | register char *to; | |
1421 | register char *from; | |
1422 | int len; | |
1423 | register int count; | |
1424 | { | |
1425 | register int todo; | |
1426 | register char *frombase = from; | |
1427 | ||
1428 | if (len == 1) { | |
1429 | todo = *from; | |
1430 | while (count-- > 0) | |
1431 | *to++ = todo; | |
1432 | return; | |
1433 | } | |
1434 | while (count-- > 0) { | |
1435 | for (todo = len; todo > 0; todo--) { | |
1436 | *to++ = *from++; | |
1437 | } | |
1438 | from = frombase; | |
1439 | } | |
1440 | } | |
0f85fab0 LW |
1441 | |
1442 | #ifndef CASTNEGFLOAT | |
1443 | unsigned long | |
1444 | castulong(f) | |
1445 | double f; | |
1446 | { | |
1447 | long along; | |
1448 | ||
1449 | if (f >= 0.0) | |
1450 | return (unsigned long)f; | |
1451 | along = (long)f; | |
1452 | return (unsigned long)along; | |
1453 | } | |
1454 | #endif | |
62b28dd9 LW |
1455 | |
1456 | #ifndef RENAME | |
1457 | int | |
1458 | same_dirent(a,b) | |
1459 | char *a; | |
1460 | char *b; | |
1461 | { | |
1462 | char *fa = rindex(a,'/'); | |
1463 | char *fb = rindex(b,'/'); | |
1464 | struct stat tmpstatbuf1; | |
1465 | struct stat tmpstatbuf2; | |
1466 | #ifndef MAXPATHLEN | |
1467 | #define MAXPATHLEN 1024 | |
1468 | #endif | |
1469 | char tmpbuf[MAXPATHLEN+1]; | |
1470 | ||
1471 | if (fa) | |
1472 | fa++; | |
1473 | else | |
1474 | fa = a; | |
1475 | if (fb) | |
1476 | fb++; | |
1477 | else | |
1478 | fb = b; | |
1479 | if (strNE(a,b)) | |
1480 | return FALSE; | |
1481 | if (fa == a) | |
6eb13c3b | 1482 | strcpy(tmpbuf,"."); |
62b28dd9 LW |
1483 | else |
1484 | strncpy(tmpbuf, a, fa - a); | |
1485 | if (stat(tmpbuf, &tmpstatbuf1) < 0) | |
1486 | return FALSE; | |
1487 | if (fb == b) | |
6eb13c3b | 1488 | strcpy(tmpbuf,"."); |
62b28dd9 LW |
1489 | else |
1490 | strncpy(tmpbuf, b, fb - b); | |
1491 | if (stat(tmpbuf, &tmpstatbuf2) < 0) | |
1492 | return FALSE; | |
1493 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && | |
1494 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; | |
1495 | } | |
1496 | #endif /* !RENAME */ |