Annotation of mandoc/mandoc.c, Revision 1.111
1.111 ! schwarze 1: /* $Id: mandoc.c,v 1.110 2018/12/14 06:33:14 schwarze Exp $ */
1.1 kristaps 2: /*
1.90 schwarze 3: * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.104 schwarze 4: * Copyright (c) 2011-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.36 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.36 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.9 kristaps 18: #include "config.h"
1.7 kristaps 19:
1.2 kristaps 20: #include <sys/types.h>
21:
1.1 kristaps 22: #include <assert.h>
23: #include <ctype.h>
1.50 kristaps 24: #include <errno.h>
25: #include <limits.h>
1.1 kristaps 26: #include <stdlib.h>
1.4 kristaps 27: #include <stdio.h>
28: #include <string.h>
1.7 kristaps 29: #include <time.h>
1.1 kristaps 30:
1.101 schwarze 31: #include "mandoc_aux.h"
1.18 kristaps 32: #include "mandoc.h"
1.101 schwarze 33: #include "roff.h"
1.1 kristaps 34: #include "libmandoc.h"
1.37 schwarze 35:
1.18 kristaps 36: static int a2time(time_t *, const char *, const char *);
1.37 schwarze 37: static char *time2a(time_t);
1.7 kristaps 38:
1.45 kristaps 39:
40: enum mandoc_esc
1.74 schwarze 41: mandoc_escape(const char **end, const char **start, int *sz)
1.1 kristaps 42: {
1.65 schwarze 43: const char *local_start;
1.105 schwarze 44: int local_sz, c, i;
1.65 schwarze 45: char term;
1.79 schwarze 46: enum mandoc_esc gly;
1.45 kristaps 47:
1.65 schwarze 48: /*
49: * When the caller doesn't provide return storage,
50: * use local storage.
51: */
52:
53: if (NULL == start)
54: start = &local_start;
55: if (NULL == sz)
56: sz = &local_sz;
57:
58: /*
1.111 ! schwarze 59: * Treat "\E" just like "\";
! 60: * it only makes a difference in copy mode.
! 61: */
! 62:
! 63: if (**end == 'E')
! 64: ++*end;
! 65:
! 66: /*
1.65 schwarze 67: * Beyond the backslash, at least one input character
68: * is part of the escape sequence. With one exception
69: * (see below), that character won't be returned.
70: */
71:
1.45 kristaps 72: gly = ESCAPE_ERROR;
1.65 schwarze 73: *start = ++*end;
74: *sz = 0;
1.64 schwarze 75: term = '\0';
1.18 kristaps 76:
1.65 schwarze 77: switch ((*start)[-1]) {
1.45 kristaps 78: /*
79: * First the glyphs. There are several different forms of
80: * these, but each eventually returns a substring of the glyph
81: * name.
82: */
1.79 schwarze 83: case '(':
1.45 kristaps 84: gly = ESCAPE_SPECIAL;
1.65 schwarze 85: *sz = 2;
1.45 kristaps 86: break;
1.79 schwarze 87: case '[':
1.111 ! schwarze 88: if (**start == ' ') {
! 89: ++*end;
! 90: return ESCAPE_ERROR;
! 91: }
1.45 kristaps 92: gly = ESCAPE_SPECIAL;
93: term = ']';
94: break;
1.79 schwarze 95: case 'C':
1.65 schwarze 96: if ('\'' != **start)
1.94 schwarze 97: return ESCAPE_ERROR;
1.65 schwarze 98: *start = ++*end;
1.87 schwarze 99: gly = ESCAPE_SPECIAL;
1.45 kristaps 100: term = '\'';
101: break;
1.72 schwarze 102:
103: /*
104: * Escapes taking no arguments at all.
105: */
1.111 ! schwarze 106: case '!':
! 107: case '?':
! 108: return ESCAPE_UNSUPP;
! 109: case '%':
! 110: case '&':
! 111: case ')':
! 112: case ',':
! 113: case '/':
! 114: case '^':
! 115: case 'a':
1.79 schwarze 116: case 'd':
1.111 ! schwarze 117: case 'r':
! 118: case 't':
1.79 schwarze 119: case 'u':
1.111 ! schwarze 120: case '{':
! 121: case '|':
! 122: case '}':
1.94 schwarze 123: return ESCAPE_IGNORE;
1.111 ! schwarze 124: case 'c':
! 125: return ESCAPE_NOSPACE;
1.102 schwarze 126: case 'p':
127: return ESCAPE_BREAK;
1.63 schwarze 128:
129: /*
130: * The \z escape is supposed to output the following
1.79 schwarze 131: * character without advancing the cursor position.
1.63 schwarze 132: * Since we are mostly dealing with terminal mode,
133: * let us just skip the next character.
134: */
1.79 schwarze 135: case 'z':
1.94 schwarze 136: return ESCAPE_SKIPCHAR;
1.1 kristaps 137:
1.45 kristaps 138: /*
139: * Handle all triggers matching \X(xy, \Xx, and \X[xxxx], where
140: * 'X' is the trigger. These have opaque sub-strings.
141: */
1.79 schwarze 142: case 'F':
1.111 ! schwarze 143: case 'f':
1.79 schwarze 144: case 'g':
145: case 'k':
146: case 'M':
147: case 'm':
148: case 'n':
1.111 ! schwarze 149: case 'O':
1.79 schwarze 150: case 'V':
151: case 'Y':
1.111 ! schwarze 152: gly = (*start)[-1] == 'f' ? ESCAPE_FONT : ESCAPE_IGNORE;
1.65 schwarze 153: switch (**start) {
1.79 schwarze 154: case '(':
1.111 ! schwarze 155: if ((*start)[-1] == 'O')
! 156: gly = ESCAPE_ERROR;
1.65 schwarze 157: *start = ++*end;
158: *sz = 2;
1.45 kristaps 159: break;
1.79 schwarze 160: case '[':
1.111 ! schwarze 161: if ((*start)[-1] == 'O')
! 162: gly = (*start)[1] == '5' ?
! 163: ESCAPE_UNSUPP : ESCAPE_ERROR;
1.65 schwarze 164: *start = ++*end;
1.45 kristaps 165: term = ']';
166: break;
167: default:
1.111 ! schwarze 168: if ((*start)[-1] == 'O') {
! 169: switch (**start) {
! 170: case '0':
! 171: gly = ESCAPE_UNSUPP;
! 172: break;
! 173: case '1':
! 174: case '2':
! 175: case '3':
! 176: case '4':
! 177: break;
! 178: default:
! 179: gly = ESCAPE_ERROR;
! 180: break;
! 181: }
! 182: }
1.65 schwarze 183: *sz = 1;
1.45 kristaps 184: break;
185: }
1.106 schwarze 186: break;
187: case '*':
188: if (strncmp(*start, "(.T", 3) != 0)
189: abort();
190: gly = ESCAPE_DEVICE;
191: *start = ++*end;
192: *sz = 2;
1.45 kristaps 193: break;
194:
195: /*
196: * These escapes are of the form \X'Y', where 'X' is the trigger
197: * and 'Y' is any string. These have opaque sub-strings.
1.78 schwarze 198: * The \B and \w escapes are handled in roff.c, roff_res().
1.45 kristaps 199: */
1.79 schwarze 200: case 'A':
201: case 'b':
202: case 'D':
203: case 'R':
204: case 'X':
205: case 'Z':
1.91 schwarze 206: gly = ESCAPE_IGNORE;
207: /* FALLTHROUGH */
208: case 'o':
209: if (**start == '\0')
1.94 schwarze 210: return ESCAPE_ERROR;
1.91 schwarze 211: if (gly == ESCAPE_ERROR)
212: gly = ESCAPE_OVERSTRIKE;
1.77 schwarze 213: term = **start;
1.65 schwarze 214: *start = ++*end;
1.24 kristaps 215: break;
1.45 kristaps 216:
217: /*
218: * These escapes are of the form \X'N', where 'X' is the trigger
219: * and 'N' resolves to a numerical expression.
220: */
1.79 schwarze 221: case 'h':
222: case 'H':
223: case 'L':
224: case 'l':
225: case 'S':
226: case 'v':
227: case 'x':
1.82 schwarze 228: if (strchr(" %&()*+-./0123456789:<=>", **start)) {
1.86 kristaps 229: if ('\0' != **start)
230: ++*end;
1.94 schwarze 231: return ESCAPE_ERROR;
1.82 schwarze 232: }
1.100 schwarze 233: switch ((*start)[-1]) {
234: case 'h':
235: gly = ESCAPE_HORIZ;
236: break;
237: case 'l':
238: gly = ESCAPE_HLINE;
239: break;
240: default:
241: gly = ESCAPE_IGNORE;
242: break;
243: }
1.77 schwarze 244: term = **start;
1.65 schwarze 245: *start = ++*end;
1.45 kristaps 246: break;
1.60 schwarze 247:
248: /*
249: * Special handling for the numbered character escape.
250: * XXX Do any other escapes need similar handling?
251: */
1.79 schwarze 252: case 'N':
1.65 schwarze 253: if ('\0' == **start)
1.94 schwarze 254: return ESCAPE_ERROR;
1.65 schwarze 255: (*end)++;
256: if (isdigit((unsigned char)**start)) {
257: *sz = 1;
1.94 schwarze 258: return ESCAPE_IGNORE;
1.65 schwarze 259: }
260: (*start)++;
1.60 schwarze 261: while (isdigit((unsigned char)**end))
262: (*end)++;
1.65 schwarze 263: *sz = *end - *start;
1.60 schwarze 264: if ('\0' != **end)
265: (*end)++;
1.94 schwarze 266: return ESCAPE_NUMBERED;
1.45 kristaps 267:
1.79 schwarze 268: /*
1.45 kristaps 269: * Sizes get a special category of their own.
270: */
1.79 schwarze 271: case 's':
1.45 kristaps 272: gly = ESCAPE_IGNORE;
1.28 kristaps 273:
1.45 kristaps 274: /* See +/- counts as a sign. */
1.65 schwarze 275: if ('+' == **end || '-' == **end || ASCII_HYPH == **end)
1.90 schwarze 276: *start = ++*end;
1.8 kristaps 277:
1.65 schwarze 278: switch (**end) {
1.79 schwarze 279: case '(':
1.65 schwarze 280: *start = ++*end;
281: *sz = 2;
1.22 kristaps 282: break;
1.79 schwarze 283: case '[':
1.65 schwarze 284: *start = ++*end;
1.64 schwarze 285: term = ']';
1.22 kristaps 286: break;
1.79 schwarze 287: case '\'':
1.65 schwarze 288: *start = ++*end;
1.64 schwarze 289: term = '\'';
1.92 schwarze 290: break;
291: case '3':
292: case '2':
293: case '1':
294: *sz = (*end)[-1] == 's' &&
295: isdigit((unsigned char)(*end)[1]) ? 2 : 1;
1.22 kristaps 296: break;
297: default:
1.65 schwarze 298: *sz = 1;
1.22 kristaps 299: break;
1.8 kristaps 300: }
301:
1.45 kristaps 302: break;
1.33 kristaps 303:
1.45 kristaps 304: /*
1.111 ! schwarze 305: * Several special characters can be encoded as
! 306: * one-byte escape sequences without using \[].
1.45 kristaps 307: */
1.111 ! schwarze 308: case ' ':
! 309: case '\'':
! 310: case '-':
! 311: case '.':
! 312: case '0':
! 313: case ':':
! 314: case '_':
! 315: case '`':
! 316: case 'e':
! 317: case '~':
! 318: gly = ESCAPE_SPECIAL;
! 319: /* FALLTHROUGH */
1.45 kristaps 320: default:
1.111 ! schwarze 321: if (gly == ESCAPE_ERROR)
! 322: gly = ESCAPE_UNDEF;
1.65 schwarze 323: *start = --*end;
324: *sz = 1;
1.22 kristaps 325: break;
1.45 kristaps 326: }
327:
328: /*
1.64 schwarze 329: * Read up to the terminating character,
330: * paying attention to nested escapes.
1.45 kristaps 331: */
332:
333: if ('\0' != term) {
1.64 schwarze 334: while (**end != term) {
335: switch (**end) {
1.79 schwarze 336: case '\0':
1.94 schwarze 337: return ESCAPE_ERROR;
1.79 schwarze 338: case '\\':
1.64 schwarze 339: (*end)++;
340: if (ESCAPE_ERROR ==
341: mandoc_escape(end, NULL, NULL))
1.94 schwarze 342: return ESCAPE_ERROR;
1.64 schwarze 343: break;
344: default:
345: (*end)++;
346: break;
347: }
348: }
1.65 schwarze 349: *sz = (*end)++ - *start;
1.111 ! schwarze 350:
! 351: /*
! 352: * The file chars.c only provides one common list
! 353: * of character names, but \[-] == \- is the only
! 354: * one of the characters with one-byte names that
! 355: * allows enclosing the name in brackets.
! 356: */
! 357: if (gly == ESCAPE_SPECIAL && *sz == 1 && **start != '-')
! 358: return ESCAPE_ERROR;
1.64 schwarze 359: } else {
1.65 schwarze 360: assert(*sz > 0);
361: if ((size_t)*sz > strlen(*start))
1.94 schwarze 362: return ESCAPE_ERROR;
1.65 schwarze 363: *end += *sz;
1.45 kristaps 364: }
365:
366: /* Run post-processors. */
367:
368: switch (gly) {
1.79 schwarze 369: case ESCAPE_FONT:
1.107 schwarze 370: if (*sz == 2) {
371: if (**start == 'C') {
1.108 schwarze 372: if ((*start)[1] == 'W' ||
373: (*start)[1] == 'R') {
374: gly = ESCAPE_FONTCW;
375: break;
376: }
1.68 schwarze 377: /*
1.108 schwarze 378: * Treat other constant-width font modes
1.68 schwarze 379: * just like regular font modes.
380: */
381: (*start)++;
382: (*sz)--;
383: } else {
1.107 schwarze 384: if ((*start)[0] == 'B' && (*start)[1] == 'I')
1.68 schwarze 385: gly = ESCAPE_FONTBI;
386: break;
387: }
1.107 schwarze 388: } else if (*sz != 1) {
389: if (*sz == 0)
390: gly = ESCAPE_FONTPREV;
1.45 kristaps 391: break;
1.107 schwarze 392: }
1.61 kristaps 393:
1.65 schwarze 394: switch (**start) {
1.79 schwarze 395: case '3':
396: case 'B':
1.45 kristaps 397: gly = ESCAPE_FONTBOLD;
398: break;
1.79 schwarze 399: case '2':
400: case 'I':
1.45 kristaps 401: gly = ESCAPE_FONTITALIC;
1.22 kristaps 402: break;
1.79 schwarze 403: case 'P':
1.45 kristaps 404: gly = ESCAPE_FONTPREV;
1.22 kristaps 405: break;
1.79 schwarze 406: case '1':
407: case 'R':
1.45 kristaps 408: gly = ESCAPE_FONTROMAN;
1.1 kristaps 409: break;
410: }
1.46 kristaps 411: break;
1.79 schwarze 412: case ESCAPE_SPECIAL:
1.105 schwarze 413: if (**start == 'c') {
414: if (*sz < 6 || *sz > 7 ||
415: strncmp(*start, "char", 4) != 0 ||
416: (int)strspn(*start + 4, "0123456789") + 4 < *sz)
417: break;
418: c = 0;
419: for (i = 4; i < *sz; i++)
420: c = 10 * c + ((*start)[i] - '0');
421: if (c < 0x21 || (c > 0x7e && c < 0xa0) || c > 0xff)
422: break;
423: *start += 4;
424: *sz -= 4;
425: gly = ESCAPE_NUMBERED;
426: break;
427: }
428:
1.87 schwarze 429: /*
1.88 schwarze 430: * Unicode escapes are defined in groff as \[u0000]
1.87 schwarze 431: * to \[u10FFFF], where the contained value must be
432: * a valid Unicode codepoint. Here, however, only
1.88 schwarze 433: * check the length and range.
1.87 schwarze 434: */
1.88 schwarze 435: if (**start != 'u' || *sz < 5 || *sz > 7)
436: break;
437: if (*sz == 7 && ((*start)[1] != '1' || (*start)[2] != '0'))
438: break;
439: if (*sz == 6 && (*start)[1] == '0')
1.96 schwarze 440: break;
441: if (*sz == 5 && (*start)[1] == 'D' &&
442: strchr("89ABCDEF", (*start)[2]) != NULL)
1.88 schwarze 443: break;
444: if ((int)strspn(*start + 1, "0123456789ABCDEFabcdef")
1.87 schwarze 445: + 1 == *sz)
446: gly = ESCAPE_UNICODE;
1.22 kristaps 447: break;
1.1 kristaps 448: default:
1.22 kristaps 449: break;
1.1 kristaps 450: }
451:
1.94 schwarze 452: return gly;
1.36 schwarze 453: }
454:
455: /*
456: * Parse a quoted or unquoted roff-style request or macro argument.
457: * Return a pointer to the parsed argument, which is either the original
458: * pointer or advanced by one byte in case the argument is quoted.
1.71 schwarze 459: * NUL-terminate the argument in place.
1.36 schwarze 460: * Collapse pairs of quotes inside quoted arguments.
461: * Advance the argument pointer to the next argument,
1.71 schwarze 462: * or to the NUL byte terminating the argument line.
1.36 schwarze 463: */
464: char *
1.110 schwarze 465: mandoc_getarg(char **cpp, int ln, int *pos)
1.36 schwarze 466: {
467: char *start, *cp;
468: int quoted, pairs, white;
469:
470: /* Quoting can only start with a new word. */
471: start = *cpp;
1.47 kristaps 472: quoted = 0;
1.36 schwarze 473: if ('"' == *start) {
474: quoted = 1;
475: start++;
1.79 schwarze 476: }
1.36 schwarze 477:
478: pairs = 0;
479: white = 0;
480: for (cp = start; '\0' != *cp; cp++) {
1.67 schwarze 481:
482: /*
483: * Move the following text left
484: * after quoted quotes and after "\\" and "\t".
485: */
1.36 schwarze 486: if (pairs)
487: cp[-pairs] = cp[0];
1.67 schwarze 488:
1.36 schwarze 489: if ('\\' == cp[0]) {
1.67 schwarze 490: /*
491: * In copy mode, translate double to single
492: * backslashes and backslash-t to literal tabs.
493: */
494: switch (cp[1]) {
1.111 ! schwarze 495: case 'a':
1.79 schwarze 496: case 't':
1.67 schwarze 497: cp[0] = '\t';
498: /* FALLTHROUGH */
1.79 schwarze 499: case '\\':
1.36 schwarze 500: pairs++;
501: cp++;
1.67 schwarze 502: break;
1.79 schwarze 503: case ' ':
1.36 schwarze 504: /* Skip escaped blanks. */
1.67 schwarze 505: if (0 == quoted)
506: cp++;
507: break;
508: default:
509: break;
510: }
1.36 schwarze 511: } else if (0 == quoted) {
512: if (' ' == cp[0]) {
513: /* Unescaped blanks end unquoted args. */
514: white = 1;
515: break;
516: }
517: } else if ('"' == cp[0]) {
518: if ('"' == cp[1]) {
519: /* Quoted quotes collapse. */
520: pairs++;
521: cp++;
522: } else {
523: /* Unquoted quotes end quoted args. */
524: quoted = 2;
525: break;
526: }
527: }
528: }
529:
530: /* Quoted argument without a closing quote. */
1.48 kristaps 531: if (1 == quoted)
1.109 schwarze 532: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1.36 schwarze 533:
1.71 schwarze 534: /* NUL-terminate this argument and move to the next one. */
1.36 schwarze 535: if (pairs)
536: cp[-pairs] = '\0';
537: if ('\0' != *cp) {
538: *cp++ = '\0';
539: while (' ' == *cp)
540: cp++;
541: }
1.39 kristaps 542: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1.36 schwarze 543: *cpp = cp;
544:
1.48 kristaps 545: if ('\0' == *cp && (white || ' ' == cp[-1]))
1.109 schwarze 546: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1.36 schwarze 547:
1.94 schwarze 548: return start;
1.4 kristaps 549: }
1.7 kristaps 550:
551: static int
552: a2time(time_t *t, const char *fmt, const char *p)
553: {
554: struct tm tm;
555: char *pp;
556:
557: memset(&tm, 0, sizeof(struct tm));
558:
1.56 kristaps 559: pp = NULL;
1.85 schwarze 560: #if HAVE_STRPTIME
1.7 kristaps 561: pp = strptime(p, fmt, &tm);
1.56 kristaps 562: #endif
1.7 kristaps 563: if (NULL != pp && '\0' == *pp) {
564: *t = mktime(&tm);
1.94 schwarze 565: return 1;
1.7 kristaps 566: }
567:
1.94 schwarze 568: return 0;
1.7 kristaps 569: }
570:
1.37 schwarze 571: static char *
572: time2a(time_t t)
573: {
1.56 kristaps 574: struct tm *tm;
1.38 schwarze 575: char *buf, *p;
576: size_t ssz;
1.37 schwarze 577: int isz;
578:
1.56 kristaps 579: tm = localtime(&t);
1.89 schwarze 580: if (tm == NULL)
1.94 schwarze 581: return NULL;
1.37 schwarze 582:
1.38 schwarze 583: /*
584: * Reserve space:
585: * up to 9 characters for the month (September) + blank
586: * up to 2 characters for the day + comma + blank
587: * 4 characters for the year and a terminating '\0'
588: */
1.98 schwarze 589:
1.38 schwarze 590: p = buf = mandoc_malloc(10 + 4 + 4 + 1);
591:
1.98 schwarze 592: if ((ssz = strftime(p, 10 + 1, "%B ", tm)) == 0)
1.38 schwarze 593: goto fail;
594: p += (int)ssz;
1.37 schwarze 595:
1.98 schwarze 596: /*
597: * The output format is just "%d" here, not "%2d" or "%02d".
598: * That's also the reason why we can't just format the
599: * date as a whole with "%B %e, %Y" or "%B %d, %Y".
600: * Besides, the present approach is less prone to buffer
601: * overflows, in case anybody should ever introduce the bug
602: * of looking at LC_TIME.
603: */
604:
605: if ((isz = snprintf(p, 4 + 1, "%d, ", tm->tm_mday)) == -1)
1.38 schwarze 606: goto fail;
1.37 schwarze 607: p += isz;
608:
1.98 schwarze 609: if (strftime(p, 4 + 1, "%Y", tm) == 0)
1.38 schwarze 610: goto fail;
1.94 schwarze 611: return buf;
1.38 schwarze 612:
613: fail:
614: free(buf);
1.94 schwarze 615: return NULL;
1.37 schwarze 616: }
617:
618: char *
1.101 schwarze 619: mandoc_normdate(struct roff_man *man, char *in, int ln, int pos)
1.7 kristaps 620: {
1.103 schwarze 621: char *cp;
1.7 kristaps 622: time_t t;
623:
1.98 schwarze 624: /* No date specified: use today's date. */
625:
626: if (in == NULL || *in == '\0' || strcmp(in, "$" "Mdocdate$") == 0) {
1.109 schwarze 627: mandoc_msg(MANDOCERR_DATE_MISSING, ln, pos, NULL);
1.98 schwarze 628: return time2a(time(NULL));
1.37 schwarze 629: }
1.98 schwarze 630:
631: /* Valid mdoc(7) date format. */
632:
633: if (a2time(&t, "$" "Mdocdate: %b %d %Y $", in) ||
1.103 schwarze 634: a2time(&t, "%b %d, %Y", in)) {
635: cp = time2a(t);
636: if (t > time(NULL) + 86400)
1.109 schwarze 637: mandoc_msg(MANDOCERR_DATE_FUTURE, ln, pos, "%s", cp);
1.104 schwarze 638: else if (*in != '$' && strcmp(in, cp) != 0)
1.109 schwarze 639: mandoc_msg(MANDOCERR_DATE_NORM, ln, pos, "%s", cp);
1.103 schwarze 640: return cp;
641: }
1.98 schwarze 642:
1.101 schwarze 643: /* In man(7), do not warn about the legacy format. */
1.98 schwarze 644:
1.101 schwarze 645: if (a2time(&t, "%Y-%m-%d", in) == 0)
1.109 schwarze 646: mandoc_msg(MANDOCERR_DATE_BAD, ln, pos, "%s", in);
1.103 schwarze 647: else if (t > time(NULL) + 86400)
1.109 schwarze 648: mandoc_msg(MANDOCERR_DATE_FUTURE, ln, pos, "%s", in);
1.101 schwarze 649: else if (man->macroset == MACROSET_MDOC)
1.109 schwarze 650: mandoc_msg(MANDOCERR_DATE_LEGACY, ln, pos, "Dd %s", in);
1.98 schwarze 651:
652: /* Use any non-mdoc(7) date verbatim. */
653:
654: return mandoc_strdup(in);
1.7 kristaps 655: }
656:
1.12 kristaps 657: int
1.75 schwarze 658: mandoc_eos(const char *p, size_t sz)
1.12 kristaps 659: {
1.75 schwarze 660: const char *q;
661: int enclosed, found;
1.12 kristaps 662:
1.13 kristaps 663: if (0 == sz)
1.94 schwarze 664: return 0;
1.12 kristaps 665:
1.14 kristaps 666: /*
667: * End-of-sentence recognition must include situations where
668: * some symbols, such as `)', allow prior EOS punctuation to
1.49 kristaps 669: * propagate outward.
1.14 kristaps 670: */
671:
1.75 schwarze 672: enclosed = found = 0;
1.25 kristaps 673: for (q = p + (int)sz - 1; q >= p; q--) {
1.23 schwarze 674: switch (*q) {
1.79 schwarze 675: case '\"':
676: case '\'':
677: case ']':
678: case ')':
1.23 schwarze 679: if (0 == found)
680: enclosed = 1;
1.14 kristaps 681: break;
1.79 schwarze 682: case '.':
683: case '!':
684: case '?':
1.23 schwarze 685: found = 1;
686: break;
1.14 kristaps 687: default:
1.94 schwarze 688: return found &&
689: (!enclosed || isalnum((unsigned char)*q));
1.14 kristaps 690: }
1.12 kristaps 691: }
692:
1.94 schwarze 693: return found && !enclosed;
1.44 kristaps 694: }
1.50 kristaps 695:
696: /*
697: * Convert a string to a long that may not be <0.
698: * If the string is invalid, or is less than 0, return -1.
699: */
700: int
1.54 kristaps 701: mandoc_strntoi(const char *p, size_t sz, int base)
1.50 kristaps 702: {
703: char buf[32];
704: char *ep;
705: long v;
706:
707: if (sz > 31)
1.94 schwarze 708: return -1;
1.50 kristaps 709:
710: memcpy(buf, p, sz);
1.51 kristaps 711: buf[(int)sz] = '\0';
1.50 kristaps 712:
713: errno = 0;
714: v = strtol(buf, &ep, base);
715:
716: if (buf[0] == '\0' || *ep != '\0')
1.94 schwarze 717: return -1;
1.50 kristaps 718:
1.54 kristaps 719: if (v > INT_MAX)
720: v = INT_MAX;
721: if (v < INT_MIN)
722: v = INT_MIN;
1.50 kristaps 723:
1.94 schwarze 724: return (int)v;
1.50 kristaps 725: }
CVSweb
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to mandoc.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [cvsweb.bsd.lv] / mandoc