Commit | Line | Data |
---|---|---|
9c79dca0 BJ |
1 | #include <stdio.h> |
2 | #include <ctype.h> | |
3 | #include <signal.h> | |
4 | #include <sys/types.h> | |
5 | #include <sys/stat.h> | |
6 | ||
7 | #define L 512 | |
8 | #define N 7 | |
9 | #define C 20 | |
10 | #define MEM (16*2048) | |
11 | #define NF 10 | |
12 | ||
13 | FILE *is, *os; | |
14 | char *dirtry[] = {"/usr/tmp", "/tmp", NULL}; | |
15 | char **dirs; | |
16 | char file1[30]; | |
17 | char *file = file1; | |
18 | char *filep; | |
19 | int nfiles; | |
20 | unsigned nlines; | |
21 | unsigned ntext; | |
22 | int *lspace; | |
23 | char *tspace; | |
24 | int cmp(), cmpa(); | |
25 | int (*compare)() = cmpa; | |
26 | char *eol(); | |
27 | int term(); | |
28 | int mflg; | |
29 | int cflg; | |
30 | int uflg; | |
31 | char *outfil; | |
32 | int unsafeout; /*kludge to assure -m -o works*/ | |
33 | char tabchar; | |
34 | int eargc; | |
35 | char **eargv; | |
36 | ||
37 | char zero[256]; | |
38 | ||
39 | char fold[256] = { | |
40 | 0200,0201,0202,0203,0204,0205,0206,0207, | |
41 | 0210,0211,0212,0213,0214,0215,0216,0217, | |
42 | 0220,0221,0222,0223,0224,0225,0226,0227, | |
43 | 0230,0231,0232,0233,0234,0235,0236,0237, | |
44 | 0240,0241,0242,0243,0244,0245,0246,0247, | |
45 | 0250,0251,0252,0253,0254,0255,0256,0257, | |
46 | 0260,0261,0262,0263,0264,0265,0266,0267, | |
47 | 0270,0271,0272,0273,0274,0275,0276,0277, | |
48 | 0300,0301,0302,0303,0304,0305,0306,0307, | |
49 | 0310,0311,0312,0313,0314,0315,0316,0317, | |
50 | 0320,0321,0322,0323,0324,0325,0326,0327, | |
51 | 0330,0331,0332,0333,0334,0335,0336,0337, | |
52 | 0340,0341,0342,0343,0344,0345,0346,0347, | |
53 | 0350,0351,0352,0353,0354,0355,0356,0357, | |
54 | 0360,0361,0362,0363,0364,0365,0366,0367, | |
55 | 0370,0371,0372,0373,0374,0375,0376,0377, | |
56 | 0000,0001,0002,0003,0004,0005,0006,0007, | |
57 | 0010,0011,0012,0013,0014,0015,0016,0017, | |
58 | 0020,0021,0022,0023,0024,0025,0026,0027, | |
59 | 0030,0031,0032,0033,0034,0035,0036,0037, | |
60 | 0040,0041,0042,0043,0044,0045,0046,0047, | |
61 | 0050,0051,0052,0053,0054,0055,0056,0057, | |
62 | 0060,0061,0062,0063,0064,0065,0066,0067, | |
63 | 0070,0071,0072,0073,0074,0075,0076,0077, | |
64 | 0100,0101,0102,0103,0104,0105,0106,0107, | |
65 | 0110,0111,0112,0113,0114,0115,0116,0117, | |
66 | 0120,0121,0122,0123,0124,0125,0126,0127, | |
67 | 0130,0131,0132,0133,0134,0134,0136,0137, | |
68 | 0140,0101,0102,0103,0104,0105,0106,0107, | |
69 | 0110,0111,0112,0113,0114,0115,0116,0117, | |
70 | 0120,0121,0122,0123,0124,0125,0126,0127, | |
71 | 0130,0131,0132,0173,0174,0175,0176,0177 | |
72 | }; | |
73 | char nofold[256] = { | |
74 | 0200,0201,0202,0203,0204,0205,0206,0207, | |
75 | 0210,0211,0212,0213,0214,0215,0216,0217, | |
76 | 0220,0221,0222,0223,0224,0225,0226,0227, | |
77 | 0230,0231,0232,0233,0234,0235,0236,0237, | |
78 | 0240,0241,0242,0243,0244,0245,0246,0247, | |
79 | 0250,0251,0252,0253,0254,0255,0256,0257, | |
80 | 0260,0261,0262,0263,0264,0265,0266,0267, | |
81 | 0270,0271,0272,0273,0274,0275,0276,0277, | |
82 | 0300,0301,0302,0303,0304,0305,0306,0307, | |
83 | 0310,0311,0312,0313,0314,0315,0316,0317, | |
84 | 0320,0321,0322,0323,0324,0325,0326,0327, | |
85 | 0330,0331,0332,0333,0334,0335,0336,0337, | |
86 | 0340,0341,0342,0343,0344,0345,0346,0347, | |
87 | 0350,0351,0352,0353,0354,0355,0356,0357, | |
88 | 0360,0361,0362,0363,0364,0365,0366,0367, | |
89 | 0370,0371,0372,0373,0374,0375,0376,0377, | |
90 | 0000,0001,0002,0003,0004,0005,0006,0007, | |
91 | 0010,0011,0012,0013,0014,0015,0016,0017, | |
92 | 0020,0021,0022,0023,0024,0025,0026,0027, | |
93 | 0030,0031,0032,0033,0034,0035,0036,0037, | |
94 | 0040,0041,0042,0043,0044,0045,0046,0047, | |
95 | 0050,0051,0052,0053,0054,0055,0056,0057, | |
96 | 0060,0061,0062,0063,0064,0065,0066,0067, | |
97 | 0070,0071,0072,0073,0074,0075,0076,0077, | |
98 | 0100,0101,0102,0103,0104,0105,0106,0107, | |
99 | 0110,0111,0112,0113,0114,0115,0116,0117, | |
100 | 0120,0121,0122,0123,0124,0125,0126,0127, | |
101 | 0130,0131,0132,0133,0134,0135,0136,0137, | |
102 | 0140,0141,0142,0143,0144,0145,0146,0147, | |
103 | 0150,0151,0152,0153,0154,0155,0156,0157, | |
104 | 0160,0161,0162,0163,0164,0165,0166,0167, | |
105 | 0170,0171,0172,0173,0174,0175,0176,0177 | |
106 | }; | |
107 | ||
108 | char nonprint[256] = { | |
109 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
110 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
111 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
112 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
113 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
114 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
115 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
116 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
117 | 1,1,1,1,1,1,1,1,1,0,0,1,1,1,1,1, | |
118 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
119 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
120 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
121 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
122 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
123 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
124 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 | |
125 | }; | |
126 | ||
127 | char dict[256] = { | |
128 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
129 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
130 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
131 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
132 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
133 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
134 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
135 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
136 | 1,1,1,1,1,1,1,1,1,0,0,1,1,1,1,1, | |
137 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
138 | 0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
139 | 0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1, | |
140 | 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
141 | 0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1, | |
142 | 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
143 | 0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1 | |
144 | }; | |
145 | ||
146 | struct field { | |
147 | char *code; | |
148 | char *ignore; | |
149 | int nflg; | |
150 | int rflg; | |
151 | int bflg[2]; | |
152 | int m[2]; | |
153 | int n[2]; | |
154 | } fields[NF]; | |
155 | struct field proto = { | |
156 | nofold+128, | |
157 | zero+128, | |
158 | 0, | |
159 | 1, | |
160 | 0,0, | |
161 | 0,-1, | |
162 | 0,0 | |
163 | }; | |
164 | int nfields; | |
165 | int error = 1; | |
166 | char *setfil(); | |
167 | char *sbrk(); | |
168 | char *brk(); | |
169 | ||
170 | main(argc, argv) | |
171 | char **argv; | |
172 | { | |
173 | register a; | |
174 | extern char end[1]; | |
175 | char *ep; | |
176 | char *arg; | |
177 | struct field *p, *q; | |
178 | int i; | |
179 | unsigned pid; | |
180 | ||
181 | copyproto(); | |
182 | eargv = argv; | |
183 | while (--argc > 0) { | |
184 | if(**++argv == '-') for(arg = *argv;;) { | |
185 | switch(*++arg) { | |
186 | case '\0': | |
187 | if(arg[-1] == '-') | |
188 | eargv[eargc++] = "-"; | |
189 | break; | |
190 | ||
191 | case 'o': | |
192 | if(--argc > 0) | |
193 | outfil = *++argv; | |
194 | continue; | |
195 | ||
196 | case 'T': | |
197 | if (--argc > 0) | |
198 | dirtry[0] = *++argv; | |
199 | continue; | |
200 | ||
201 | default: | |
202 | field(++*argv,nfields>0); | |
203 | break; | |
204 | } | |
205 | break; | |
206 | } else if (**argv == '+') { | |
207 | if(++nfields>=NF) { | |
208 | diag("too many keys",""); | |
209 | exit(1); | |
210 | } | |
211 | copyproto(); | |
212 | field(++*argv,0); | |
213 | } else | |
214 | eargv[eargc++] = *argv; | |
215 | } | |
216 | q = &fields[0]; | |
217 | for(a=1; a<=nfields; a++) { | |
218 | p = &fields[a]; | |
219 | if(p->code != proto.code) continue; | |
220 | if(p->ignore != proto.ignore) continue; | |
221 | if(p->nflg != proto.nflg) continue; | |
222 | if(p->rflg != proto.rflg) continue; | |
223 | if(p->bflg[0] != proto.bflg[0]) continue; | |
224 | if(p->bflg[1] != proto.bflg[1]) continue; | |
225 | p->code = q->code; | |
226 | p->ignore = q->ignore; | |
227 | p->nflg = q->nflg; | |
228 | p->rflg = q->rflg; | |
229 | p->bflg[0] = p->bflg[1] = q->bflg[0]; | |
230 | } | |
231 | if(eargc == 0) | |
232 | eargv[eargc++] = "-"; | |
233 | if(cflg && eargc>1) { | |
234 | diag("can check only 1 file",""); | |
235 | exit(1); | |
236 | } | |
237 | safeoutfil(); | |
238 | ||
239 | ep = end + MEM; | |
240 | lspace = (int *)sbrk(0); | |
241 | while((int)brk(ep) == -1) | |
242 | ep -= 512; | |
243 | brk(ep -= 512); /* for recursion */ | |
244 | a = ep - (char*)lspace; | |
245 | nlines = (a-L); | |
246 | nlines /= (5*(sizeof(char *)/sizeof(char))); | |
247 | ntext = nlines*8; | |
248 | tspace = (char *)(lspace + nlines); | |
249 | a = -1; | |
250 | for(dirs=dirtry; *dirs; dirs++) { | |
251 | sprintf(filep=file1, "%s/stm%05uaa", *dirs, getpid()); | |
252 | while (*filep) | |
253 | filep++; | |
254 | filep -= 2; | |
255 | if ( (a=creat(file, 0600)) >=0) | |
256 | break; | |
257 | } | |
258 | if(a < 0) { | |
259 | diag("can't locate temp",""); | |
260 | exit(1); | |
261 | } | |
262 | close(a); | |
263 | signal(SIGHUP, term); | |
264 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) | |
265 | signal(SIGINT, term); | |
266 | signal(SIGPIPE,term); | |
267 | signal(SIGTERM,term); | |
268 | nfiles = eargc; | |
269 | if(!mflg && !cflg) { | |
270 | sort(); | |
271 | fclose(stdin); | |
272 | } | |
273 | for(a = mflg|cflg?0:eargc; a+N<nfiles || unsafeout&&a<eargc; a=i) { | |
274 | i = a+N; | |
275 | if(i>=nfiles) | |
276 | i = nfiles; | |
277 | newfile(); | |
278 | merge(a, i); | |
279 | } | |
280 | if(a != nfiles) { | |
281 | oldfile(); | |
282 | merge(a, nfiles); | |
283 | } | |
284 | error = 0; | |
285 | term(); | |
286 | } | |
287 | ||
288 | sort() | |
289 | { | |
290 | register char *cp; | |
291 | register char **lp; | |
292 | register c; | |
293 | int done; | |
294 | int i; | |
295 | char *f; | |
296 | ||
297 | done = 0; | |
298 | i = 0; | |
299 | c = EOF; | |
300 | do { | |
301 | cp = tspace; | |
302 | lp = (char **)lspace; | |
303 | while(lp < (char **)lspace+nlines && cp < tspace+ntext) { | |
304 | *lp++ = cp; | |
305 | while(c != '\n') { | |
306 | if(c != EOF) { | |
307 | *cp++ = c; | |
308 | c = getc(is); | |
309 | continue; | |
310 | } else if(is) | |
311 | fclose(is); | |
312 | if(i < eargc) { | |
313 | if((f = setfil(i++)) == 0) | |
314 | is = stdin; | |
315 | else if((is = fopen(f, "r")) == NULL) | |
316 | cant(f); | |
317 | c = getc(is); | |
318 | } else | |
319 | break; | |
320 | } | |
321 | *cp++ = '\n'; | |
322 | if(c == EOF) { | |
323 | done++; | |
324 | lp--; | |
325 | break; | |
326 | } | |
327 | c = getc(is); | |
328 | } | |
329 | qsort((char **)lspace, lp); | |
330 | if(done == 0 || nfiles != eargc) | |
331 | newfile(); | |
332 | else | |
333 | oldfile(); | |
334 | while(lp > (char **)lspace) { | |
335 | cp = *--lp; | |
336 | if(*cp) | |
337 | do | |
338 | putc(*cp, os); | |
339 | while(*cp++ != '\n'); | |
340 | } | |
341 | fclose(os); | |
342 | } while(done == 0); | |
343 | } | |
344 | ||
345 | struct merg | |
346 | { | |
347 | char l[L]; | |
348 | FILE *b; | |
349 | } *ibuf[256]; | |
350 | ||
351 | merge(a,b) | |
352 | { | |
353 | struct merg *p; | |
354 | register char *cp, *dp; | |
355 | register i; | |
356 | struct merg **ip, *jp; | |
357 | char *f; | |
358 | int j; | |
359 | int k, l; | |
360 | int muflg; | |
361 | ||
362 | p = (struct merg *)lspace; | |
363 | j = 0; | |
364 | for(i=a; i < b; i++) { | |
365 | f = setfil(i); | |
366 | if(f == 0) | |
367 | p->b = stdin; | |
368 | else if((p->b = fopen(f, "r")) == NULL) | |
369 | cant(f); | |
370 | ibuf[j] = p; | |
371 | if(!rline(p)) j++; | |
372 | p++; | |
373 | } | |
374 | ||
375 | do { | |
376 | i = j; | |
377 | qsort((char **)ibuf, (char **)(ibuf+i)); | |
378 | l = 0; | |
379 | while(i--) { | |
380 | cp = ibuf[i]->l; | |
381 | if(*cp == '\0') { | |
382 | l = 1; | |
383 | if(rline(ibuf[i])) { | |
384 | k = i; | |
385 | while(++k < j) | |
386 | ibuf[k-1] = ibuf[k]; | |
387 | j--; | |
388 | } | |
389 | } | |
390 | } | |
391 | } while(l); | |
392 | ||
393 | muflg = mflg & uflg | cflg; | |
394 | i = j; | |
395 | while(i > 0) { | |
396 | cp = ibuf[i-1]->l; | |
397 | if(!cflg && (uflg == 0 || muflg || | |
398 | (*compare)(ibuf[i-1]->l,ibuf[i-2]->l))) | |
399 | do | |
400 | putc(*cp, os); | |
401 | while(*cp++ != '\n'); | |
402 | if(muflg){ | |
403 | cp = ibuf[i-1]->l; | |
404 | dp = p->l; | |
405 | do { | |
406 | } while((*dp++ = *cp++) != '\n'); | |
407 | } | |
408 | for(;;) { | |
409 | if(rline(ibuf[i-1])) { | |
410 | i--; | |
411 | if(i == 0) | |
412 | break; | |
413 | if(i == 1) | |
414 | muflg = uflg; | |
415 | } | |
416 | ip = &ibuf[i]; | |
417 | while(--ip>ibuf&&(*compare)(ip[0]->l,ip[-1]->l)<0){ | |
418 | jp = *ip; | |
419 | *ip = *(ip-1); | |
420 | *(ip-1) = jp; | |
421 | } | |
422 | if(!muflg) | |
423 | break; | |
424 | j = (*compare)(ibuf[i-1]->l,p->l); | |
425 | if(cflg) { | |
426 | if(j > 0) | |
427 | disorder("disorder:",ibuf[i-1]->l); | |
428 | else if(uflg && j==0) | |
429 | disorder("nonunique:",ibuf[i-1]->l); | |
430 | } else if(j == 0) | |
431 | continue; | |
432 | break; | |
433 | } | |
434 | } | |
435 | p = (struct merg *)lspace; | |
436 | for(i=a; i<b; i++) { | |
437 | fclose(p->b); | |
438 | p++; | |
439 | if(i >= eargc) | |
440 | unlink(setfil(i)); | |
441 | } | |
442 | fclose(os); | |
443 | } | |
444 | ||
445 | rline(mp) | |
446 | struct merg *mp; | |
447 | { | |
448 | register char *cp; | |
449 | register char *ce; | |
450 | FILE *bp; | |
451 | register c; | |
452 | ||
453 | bp = mp->b; | |
454 | cp = mp->l; | |
455 | ce = cp+L; | |
456 | do { | |
457 | c = getc(bp); | |
458 | if(c == EOF) | |
459 | return(1); | |
460 | if(cp>=ce) | |
461 | cp--; | |
462 | *cp++ = c; | |
463 | } while(c!='\n'); | |
464 | return(0); | |
465 | } | |
466 | ||
467 | disorder(s,t) | |
468 | char *s, *t; | |
469 | { | |
470 | register char *u; | |
471 | for(u=t; *u!='\n';u++) ; | |
472 | *u = 0; | |
473 | diag(s,t); | |
474 | term(); | |
475 | } | |
476 | ||
477 | newfile() | |
478 | { | |
479 | register char *f; | |
480 | ||
481 | f = setfil(nfiles); | |
482 | if((os=fopen(f, "w")) == NULL) { | |
483 | diag("can't create ",f); | |
484 | term(); | |
485 | } | |
486 | nfiles++; | |
487 | } | |
488 | ||
489 | char * | |
490 | setfil(i) | |
491 | { | |
492 | ||
493 | if(i < eargc) | |
494 | if(eargv[i][0] == '-' && eargv[i][1] == '\0') | |
495 | return(0); | |
496 | else | |
497 | return(eargv[i]); | |
498 | i -= eargc; | |
499 | filep[0] = i/26 + 'a'; | |
500 | filep[1] = i%26 + 'a'; | |
501 | return(file); | |
502 | } | |
503 | ||
504 | oldfile() | |
505 | { | |
506 | ||
507 | if(outfil) { | |
508 | if((os=fopen(outfil, "w")) == NULL) { | |
509 | diag("can't create ",outfil); | |
510 | term(); | |
511 | } | |
512 | } else | |
513 | os = stdout; | |
514 | } | |
515 | ||
516 | safeoutfil() | |
517 | { | |
518 | register int i; | |
519 | struct stat obuf,ibuf; | |
520 | ||
521 | if(!mflg||outfil==0) | |
522 | return; | |
523 | if(stat(outfil,&obuf)==-1) | |
524 | return; | |
525 | for(i=eargc-N;i<eargc;i++) { /*-N is suff., not nec.*/ | |
526 | if(stat(eargv[i],&ibuf)==-1) | |
527 | continue; | |
528 | if(obuf.st_dev==ibuf.st_dev&& | |
529 | obuf.st_ino==ibuf.st_ino) | |
530 | unsafeout++; | |
531 | } | |
532 | } | |
533 | ||
534 | cant(f) | |
535 | char *f; | |
536 | { | |
537 | ||
538 | diag("can't open ",f); | |
539 | term(); | |
540 | } | |
541 | ||
542 | diag(s,t) | |
543 | char *s, *t; | |
544 | { | |
545 | fputs("sort: ",stderr); | |
546 | fputs(s,stderr); | |
547 | fputs(t,stderr); | |
548 | fputs("\n",stderr); | |
549 | } | |
550 | ||
551 | term() | |
552 | { | |
553 | register i; | |
554 | ||
555 | signal(SIGINT, SIG_IGN); | |
556 | signal(SIGHUP, SIG_IGN); | |
557 | signal(SIGTERM, SIG_IGN); | |
558 | if(nfiles == eargc) | |
559 | nfiles++; | |
560 | for(i=eargc; i<=nfiles; i++) { /*<= in case of interrupt*/ | |
561 | unlink(setfil(i)); /*with nfiles not updated*/ | |
562 | } | |
563 | exit(error); | |
564 | } | |
565 | ||
566 | cmp(i, j) | |
567 | char *i, *j; | |
568 | { | |
569 | register char *pa, *pb; | |
570 | char *skip(); | |
571 | char *code, *ignore; | |
572 | int a, b; | |
573 | int k; | |
574 | char *la, *lb; | |
575 | register int sa; | |
576 | int sb; | |
577 | char *ipa, *ipb, *jpa, *jpb; | |
578 | struct field *fp; | |
579 | ||
580 | for(k = nfields>0; k<=nfields; k++) { | |
581 | fp = &fields[k]; | |
582 | pa = i; | |
583 | pb = j; | |
584 | if(k) { | |
585 | la = skip(pa, fp, 1); | |
586 | pa = skip(pa, fp, 0); | |
587 | lb = skip(pb, fp, 1); | |
588 | pb = skip(pb, fp, 0); | |
589 | } else { | |
590 | la = eol(pa); | |
591 | lb = eol(pb); | |
592 | } | |
593 | if(fp->nflg) { | |
594 | while(blank(*pa)) | |
595 | pa++; | |
596 | while(blank(*pb)) | |
597 | pb++; | |
598 | sa = sb = fp->rflg; | |
599 | if(*pa == '-') { | |
600 | pa++; | |
601 | sa = -sa; | |
602 | } | |
603 | if(*pb == '-') { | |
604 | pb++; | |
605 | sb = -sb; | |
606 | } | |
607 | for(ipa = pa; ipa<la&&isdigit(*ipa); ipa++) ; | |
608 | for(ipb = pb; ipb<lb&&isdigit(*ipb); ipb++) ; | |
609 | jpa = ipa; | |
610 | jpb = ipb; | |
611 | a = 0; | |
612 | if(sa==sb) | |
613 | while(ipa > pa && ipb > pb) | |
614 | if(b = *--ipb - *--ipa) | |
615 | a = b; | |
616 | while(ipa > pa) | |
617 | if(*--ipa != '0') | |
618 | return(-sa); | |
619 | while(ipb > pb) | |
620 | if(*--ipb != '0') | |
621 | return(sb); | |
622 | if(a) return(a*sa); | |
623 | if(*(pa=jpa) == '.') | |
624 | pa++; | |
625 | if(*(pb=jpb) == '.') | |
626 | pb++; | |
627 | if(sa==sb) | |
628 | while(pa<la && isdigit(*pa) | |
629 | && pb<lb && isdigit(*pb)) | |
630 | if(a = *pb++ - *pa++) | |
631 | return(a*sa); | |
632 | while(pa<la && isdigit(*pa)) | |
633 | if(*pa++ != '0') | |
634 | return(-sa); | |
635 | while(pb<lb && isdigit(*pb)) | |
636 | if(*pb++ != '0') | |
637 | return(sb); | |
638 | continue; | |
639 | } | |
640 | code = fp->code; | |
641 | ignore = fp->ignore; | |
642 | loop: | |
643 | while(ignore[*pa]) | |
644 | pa++; | |
645 | while(ignore[*pb]) | |
646 | pb++; | |
647 | if(pa>=la || *pa=='\n') | |
648 | if(pb<lb && *pb!='\n') | |
649 | return(fp->rflg); | |
650 | else continue; | |
651 | if(pb>=lb || *pb=='\n') | |
652 | return(-fp->rflg); | |
653 | if((sa = code[*pb++]-code[*pa++]) == 0) | |
654 | goto loop; | |
655 | return(sa*fp->rflg); | |
656 | } | |
657 | if(uflg) | |
658 | return(0); | |
659 | return(cmpa(i, j)); | |
660 | } | |
661 | ||
662 | cmpa(pa, pb) | |
663 | register char *pa, *pb; | |
664 | { | |
665 | while(*pa == *pb) { | |
666 | if(*pa++ == '\n') | |
667 | return(0); | |
668 | pb++; | |
669 | } | |
670 | return( | |
671 | *pa == '\n' ? fields[0].rflg: | |
672 | *pb == '\n' ?-fields[0].rflg: | |
673 | *pb > *pa ? fields[0].rflg: | |
674 | -fields[0].rflg | |
675 | ); | |
676 | } | |
677 | ||
678 | char * | |
679 | skip(pp, fp, j) | |
680 | struct field *fp; | |
681 | char *pp; | |
682 | { | |
683 | register i; | |
684 | register char *p; | |
685 | ||
686 | p = pp; | |
687 | if( (i=fp->m[j]) < 0) | |
688 | return(eol(p)); | |
689 | while(i-- > 0) { | |
690 | if(tabchar != 0) { | |
691 | while(*p != tabchar) | |
692 | if(*p != '\n') | |
693 | p++; | |
694 | else goto ret; | |
695 | p++; | |
696 | } else { | |
697 | while(blank(*p)) | |
698 | p++; | |
699 | while(!blank(*p)) | |
700 | if(*p != '\n') | |
701 | p++; | |
702 | else goto ret; | |
703 | } | |
704 | } | |
705 | if(fp->bflg[j]) | |
706 | while(blank(*p)) | |
707 | p++; | |
708 | i = fp->n[j]; | |
709 | while(i-- > 0) { | |
710 | if(*p != '\n') | |
711 | p++; | |
712 | else goto ret; | |
713 | } | |
714 | ret: | |
715 | return(p); | |
716 | } | |
717 | ||
718 | char * | |
719 | eol(p) | |
720 | register char *p; | |
721 | { | |
722 | while(*p != '\n') p++; | |
723 | return(p); | |
724 | } | |
725 | ||
726 | copyproto() | |
727 | { | |
728 | register i; | |
729 | register int *p, *q; | |
730 | ||
731 | p = (int *)&proto; | |
732 | q = (int *)&fields[nfields]; | |
733 | for(i=0; i<sizeof(proto)/sizeof(*p); i++) | |
734 | *q++ = *p++; | |
735 | } | |
736 | ||
737 | field(s,k) | |
738 | char *s; | |
739 | { | |
740 | register struct field *p; | |
741 | register d; | |
742 | p = &fields[nfields]; | |
743 | d = 0; | |
744 | for(; *s!=0; s++) { | |
745 | switch(*s) { | |
746 | case '\0': | |
747 | return; | |
748 | ||
749 | case 'b': | |
750 | p->bflg[k]++; | |
751 | break; | |
752 | ||
753 | case 'd': | |
754 | p->ignore = dict+128; | |
755 | break; | |
756 | ||
757 | case 'f': | |
758 | p->code = fold+128; | |
759 | break; | |
760 | case 'i': | |
761 | p->ignore = nonprint+128; | |
762 | break; | |
763 | ||
764 | case 'c': | |
765 | cflg = 1; | |
766 | continue; | |
767 | ||
768 | case 'm': | |
769 | mflg = 1; | |
770 | continue; | |
771 | ||
772 | case 'n': | |
773 | p->nflg++; | |
774 | break; | |
775 | case 't': | |
776 | tabchar = *++s; | |
777 | if(tabchar == 0) s--; | |
778 | continue; | |
779 | ||
780 | case 'r': | |
781 | p->rflg = -1; | |
782 | continue; | |
783 | case 'u': | |
784 | uflg = 1; | |
785 | break; | |
786 | ||
787 | case '.': | |
788 | if(p->m[k] == -1) /* -m.n with m missing */ | |
789 | p->m[k] = 0; | |
790 | d = &fields[0].n[0]-&fields[0].m[0]; | |
791 | ||
792 | default: | |
793 | p->m[k+d] = number(&s); | |
794 | } | |
795 | compare = cmp; | |
796 | } | |
797 | } | |
798 | ||
799 | number(ppa) | |
800 | char **ppa; | |
801 | { | |
802 | int n; | |
803 | register char *pa; | |
804 | pa = *ppa; | |
805 | n = 0; | |
806 | while(isdigit(*pa)) { | |
807 | n = n*10 + *pa - '0'; | |
808 | *ppa = pa++; | |
809 | } | |
810 | return(n); | |
811 | } | |
812 | ||
813 | blank(c) | |
814 | { | |
815 | if(c==' ' || c=='\t') | |
816 | return(1); | |
817 | return(0); | |
818 | } | |
819 | ||
820 | #define qsexc(p,q) t= *p;*p= *q;*q=t | |
821 | #define qstexc(p,q,r) t= *p;*p= *r;*r= *q;*q=t | |
822 | ||
823 | qsort(a,l) | |
824 | char **a, **l; | |
825 | { | |
826 | register char **i, **j; | |
827 | char **k; | |
828 | char **lp, **hp; | |
829 | int c; | |
830 | char *t; | |
831 | unsigned n; | |
832 | ||
833 | ||
834 | ||
835 | start: | |
836 | if((n=l-a) <= 1) | |
837 | return; | |
838 | ||
839 | ||
840 | n /= 2; | |
841 | hp = lp = a+n; | |
842 | i = a; | |
843 | j = l-1; | |
844 | ||
845 | ||
846 | for(;;) { | |
847 | if(i < lp) { | |
848 | if((c = (*compare)(*i, *lp)) == 0) { | |
849 | --lp; | |
850 | qsexc(i, lp); | |
851 | continue; | |
852 | } | |
853 | if(c < 0) { | |
854 | ++i; | |
855 | continue; | |
856 | } | |
857 | } | |
858 | ||
859 | loop: | |
860 | if(j > hp) { | |
861 | if((c = (*compare)(*hp, *j)) == 0) { | |
862 | ++hp; | |
863 | qsexc(hp, j); | |
864 | goto loop; | |
865 | } | |
866 | if(c > 0) { | |
867 | if(i == lp) { | |
868 | ++hp; | |
869 | qstexc(i, hp, j); | |
870 | i = ++lp; | |
871 | goto loop; | |
872 | } | |
873 | qsexc(i, j); | |
874 | --j; | |
875 | ++i; | |
876 | continue; | |
877 | } | |
878 | --j; | |
879 | goto loop; | |
880 | } | |
881 | ||
882 | ||
883 | if(i == lp) { | |
884 | if(uflg) | |
885 | for(k=lp+1; k<=hp;) **k++ = '\0'; | |
886 | if(lp-a >= l-hp) { | |
887 | qsort(hp+1, l); | |
888 | l = lp; | |
889 | } else { | |
890 | qsort(a, lp); | |
891 | a = hp+1; | |
892 | } | |
893 | goto start; | |
894 | } | |
895 | ||
896 | ||
897 | --lp; | |
898 | qstexc(j, lp, i); | |
899 | j = --hp; | |
900 | } | |
901 | } | |
902 |