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1.12 ! kristaps 1: /* $Id: argv.c,v 1.11 2009/01/12 10:31:53 kristaps Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the
7: * above copyright notice and this permission notice appear in all
8: * copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17: * PERFORMANCE OF THIS SOFTWARE.
18: */
19: #include <assert.h>
20: #include <ctype.h>
21: #include <err.h>
22: #include <stdlib.h>
23: #include <stdio.h>
24: #include <string.h>
25:
26: #include "private.h"
27:
28:
1.2 kristaps 29: static int lookup(int, const char *);
1.9 kristaps 30: static int parse(struct mdoc *, int, int,
1.2 kristaps 31: struct mdoc_arg *, int *, char *);
1.12 ! kristaps 32: static int parse_single(struct mdoc *, int,
! 33: struct mdoc_arg *, int *, char *);
! 34: static int parse_multi(struct mdoc *, int,
! 35: struct mdoc_arg *, int *, char *);
1.2 kristaps 36: static int postparse(struct mdoc *, int,
37: const struct mdoc_arg *, int);
1.1 kristaps 38:
39:
1.2 kristaps 40: int
1.9 kristaps 41: mdoc_args(struct mdoc *mdoc, int line, int *pos, char *buf, int fl, char **v)
1.1 kristaps 42: {
1.2 kristaps 43: int i;
1.1 kristaps 44:
45: if (0 == buf[*pos])
1.2 kristaps 46: return(ARGS_EOLN);
47:
48: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
1.9 kristaps 49: if ( ! mdoc_pwarn(mdoc, line, *pos, WARN_SYNTAX_QUOTED))
1.2 kristaps 50: return(ARGS_ERROR);
51:
52: if ('-' == buf[*pos])
1.9 kristaps 53: if ( ! mdoc_pwarn(mdoc, line, *pos, WARN_SYNTAX_ARGLIKE))
1.2 kristaps 54: return(ARGS_ERROR);
55:
56: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
1.12 ! kristaps 57: /*
! 58: * If ARGS_DELIM, return ARGS_PUNCT if only space-separated
! 59: * punctuation remains.
! 60: */
1.2 kristaps 61: for (i = *pos; buf[i]; ) {
62: if ( ! mdoc_iscdelim(buf[i]))
63: break;
64: i++;
65: if (0 == buf[i] || ! isspace(buf[i]))
66: break;
67: i++;
68: while (buf[i] && isspace(buf[i]))
69: i++;
70: }
71: if (0 == buf[i]) {
72: *v = &buf[*pos];
73: return(ARGS_PUNCT);
74: }
75: }
76:
1.12 ! kristaps 77: /* Parse routine for non-quoted string. */
1.1 kristaps 78:
79: if ('\"' != buf[*pos]) {
80: *v = &buf[*pos];
81:
1.12 ! kristaps 82: /* FIXME: UGLY tab-sep processing. */
! 83:
! 84: if (ARGS_TABSEP & fl)
! 85: while (buf[*pos]) {
! 86: if ('\t' == buf[*pos])
! 87: break;
! 88: if ('T' == buf[*pos]) {
! 89: (*pos)++;
! 90: if (0 == buf[*pos])
! 91: break;
! 92: if ('a' == buf[*pos]) {
! 93: buf[*pos - 1] = 0;
! 94: break;
! 95: }
! 96: }
! 97: (*pos)++;
! 98: }
! 99: else
! 100: while (buf[*pos] && ! isspace(buf[*pos]))
! 101: (*pos)++;
1.1 kristaps 102:
103: if (0 == buf[*pos])
1.2 kristaps 104: return(ARGS_WORD);
1.1 kristaps 105:
106: buf[(*pos)++] = 0;
1.12 ! kristaps 107:
1.1 kristaps 108: if (0 == buf[*pos])
1.2 kristaps 109: return(ARGS_WORD);
1.1 kristaps 110:
1.12 ! kristaps 111: if ( ! (ARGS_TABSEP & fl))
! 112: while (buf[*pos] && isspace(buf[*pos]))
! 113: (*pos)++;
1.1 kristaps 114:
115: if (buf[*pos])
1.2 kristaps 116: return(ARGS_WORD);
1.1 kristaps 117:
1.9 kristaps 118: if ( ! mdoc_pwarn(mdoc, line, *pos, WARN_SYNTAX_WS_EOLN))
1.2 kristaps 119: return(ARGS_ERROR);
1.1 kristaps 120:
1.2 kristaps 121: return(ARGS_WORD);
122: }
123:
124: /*
125: * If we're a quoted string (and quoted strings are allowed),
126: * then parse ahead to the next quote. If none's found, it's an
1.4 kristaps 127: * error. After, parse to the next word.
1.2 kristaps 128: */
1.1 kristaps 129:
1.12 ! kristaps 130: assert( ! (ARGS_TABSEP & fl));
! 131:
1.1 kristaps 132: *v = &buf[++(*pos)];
133:
134: while (buf[*pos] && '\"' != buf[*pos])
135: (*pos)++;
136:
137: if (0 == buf[*pos]) {
1.9 kristaps 138: (void)mdoc_perr(mdoc, line, *pos, ERR_SYNTAX_UNQUOTE);
1.2 kristaps 139: return(ARGS_ERROR);
1.1 kristaps 140: }
141:
142: buf[(*pos)++] = 0;
143: if (0 == buf[*pos])
1.2 kristaps 144: return(ARGS_WORD);
1.1 kristaps 145:
146: while (buf[*pos] && isspace(buf[*pos]))
147: (*pos)++;
148:
149: if (buf[*pos])
1.2 kristaps 150: return(ARGS_WORD);
1.1 kristaps 151:
1.9 kristaps 152: if ( ! mdoc_pwarn(mdoc, line, *pos, WARN_SYNTAX_WS_EOLN))
1.2 kristaps 153: return(ARGS_ERROR);
154:
155: return(ARGS_WORD);
1.1 kristaps 156: }
157:
158:
1.2 kristaps 159: static int
160: lookup(int tok, const char *argv)
1.1 kristaps 161: {
162:
163: switch (tok) {
1.6 kristaps 164: case (MDOC_An):
165: if (xstrcmp(argv, "split"))
166: return(MDOC_Split);
167: else if (xstrcmp(argv, "nosplit"))
168: return(MDOC_Nosplit);
169: break;
170:
1.2 kristaps 171: case (MDOC_Bd):
1.1 kristaps 172: if (xstrcmp(argv, "ragged"))
173: return(MDOC_Ragged);
174: else if (xstrcmp(argv, "unfilled"))
175: return(MDOC_Unfilled);
176: else if (xstrcmp(argv, "literal"))
177: return(MDOC_Literal);
178: else if (xstrcmp(argv, "file"))
179: return(MDOC_File);
180: else if (xstrcmp(argv, "offset"))
181: return(MDOC_Offset);
1.2 kristaps 182: break;
183:
1.8 kristaps 184: case (MDOC_Bf):
185: if (xstrcmp(argv, "emphasis"))
186: return(MDOC_Emphasis);
187: else if (xstrcmp(argv, "literal"))
188: return(MDOC_Literal);
189: else if (xstrcmp(argv, "symbolic"))
190: return(MDOC_Symbolic);
191: break;
192:
1.7 kristaps 193: case (MDOC_Bk):
194: if (xstrcmp(argv, "words"))
195: return(MDOC_Words);
196: break;
197:
1.2 kristaps 198: case (MDOC_Bl):
199: if (xstrcmp(argv, "bullet"))
1.1 kristaps 200: return(MDOC_Bullet);
201: else if (xstrcmp(argv, "dash"))
202: return(MDOC_Dash);
203: else if (xstrcmp(argv, "hyphen"))
204: return(MDOC_Hyphen);
205: else if (xstrcmp(argv, "item"))
206: return(MDOC_Item);
207: else if (xstrcmp(argv, "enum"))
208: return(MDOC_Enum);
209: else if (xstrcmp(argv, "tag"))
210: return(MDOC_Tag);
211: else if (xstrcmp(argv, "diag"))
212: return(MDOC_Diag);
213: else if (xstrcmp(argv, "hang"))
214: return(MDOC_Hang);
215: else if (xstrcmp(argv, "ohang"))
216: return(MDOC_Ohang);
217: else if (xstrcmp(argv, "inset"))
218: return(MDOC_Inset);
219: else if (xstrcmp(argv, "column"))
220: return(MDOC_Column);
221: else if (xstrcmp(argv, "width"))
222: return(MDOC_Width);
1.2 kristaps 223: else if (xstrcmp(argv, "offset"))
224: return(MDOC_Offset);
1.1 kristaps 225: else if (xstrcmp(argv, "compact"))
226: return(MDOC_Compact);
1.2 kristaps 227: break;
1.3 kristaps 228:
229: case (MDOC_Rv):
230: /* FALLTHROUGH */
231: case (MDOC_Ex):
232: if (xstrcmp(argv, "std"))
233: return(MDOC_Std);
234: break;
1.5 kristaps 235:
236: case (MDOC_St):
237: if (xstrcmp(argv, "p1003.1-88"))
238: return(MDOC_p1003_1_88);
239: else if (xstrcmp(argv, "p1003.1-90"))
240: return(MDOC_p1003_1_90);
241: else if (xstrcmp(argv, "p1003.1-96"))
242: return(MDOC_p1003_1_96);
243: else if (xstrcmp(argv, "p1003.1-2001"))
244: return(MDOC_p1003_1_2001);
245: else if (xstrcmp(argv, "p1003.1-2004"))
246: return(MDOC_p1003_1_2004);
247: else if (xstrcmp(argv, "p1003.1"))
248: return(MDOC_p1003_1);
249: else if (xstrcmp(argv, "p1003.1b"))
250: return(MDOC_p1003_1b);
251: else if (xstrcmp(argv, "p1003.1b-93"))
252: return(MDOC_p1003_1b_93);
253: else if (xstrcmp(argv, "p1003.1c-95"))
254: return(MDOC_p1003_1c_95);
255: else if (xstrcmp(argv, "p1003.1g-2000"))
256: return(MDOC_p1003_1g_2000);
257: else if (xstrcmp(argv, "p1003.2-92"))
258: return(MDOC_p1003_2_92);
259: else if (xstrcmp(argv, "p1003.2-95"))
260: return(MDOC_p1387_2_95);
261: else if (xstrcmp(argv, "p1003.2"))
262: return(MDOC_p1003_2);
263: else if (xstrcmp(argv, "p1387.2-95"))
264: return(MDOC_p1387_2);
265: else if (xstrcmp(argv, "isoC-90"))
266: return(MDOC_isoC_90);
267: else if (xstrcmp(argv, "isoC-amd1"))
268: return(MDOC_isoC_amd1);
269: else if (xstrcmp(argv, "isoC-tcor1"))
270: return(MDOC_isoC_tcor1);
271: else if (xstrcmp(argv, "isoC-tcor2"))
272: return(MDOC_isoC_tcor2);
273: else if (xstrcmp(argv, "isoC-99"))
274: return(MDOC_isoC_99);
275: else if (xstrcmp(argv, "ansiC"))
276: return(MDOC_ansiC);
277: else if (xstrcmp(argv, "ansiC-89"))
278: return(MDOC_ansiC_89);
279: else if (xstrcmp(argv, "ansiC-99"))
280: return(MDOC_ansiC_99);
281: else if (xstrcmp(argv, "ieee754"))
282: return(MDOC_ieee754);
283: else if (xstrcmp(argv, "iso8802-3"))
284: return(MDOC_iso8802_3);
285: else if (xstrcmp(argv, "xpg3"))
286: return(MDOC_xpg3);
287: else if (xstrcmp(argv, "xpg4"))
288: return(MDOC_xpg4);
289: else if (xstrcmp(argv, "xpg4.2"))
290: return(MDOC_xpg4_2);
291: else if (xstrcmp(argv, "xpg4.3"))
292: return(MDOC_xpg4_3);
293: else if (xstrcmp(argv, "xbd5"))
294: return(MDOC_xbd5);
295: else if (xstrcmp(argv, "xcu5"))
296: return(MDOC_xcu5);
297: else if (xstrcmp(argv, "xsh5"))
298: return(MDOC_xsh5);
299: else if (xstrcmp(argv, "xns5"))
300: return(MDOC_xns5);
301: else if (xstrcmp(argv, "xns5.2d2.0"))
302: return(MDOC_xns5_2d2_0);
303: else if (xstrcmp(argv, "xcurses4.2"))
304: return(MDOC_xcurses4_2);
305: else if (xstrcmp(argv, "susv2"))
306: return(MDOC_susv2);
307: else if (xstrcmp(argv, "susv3"))
308: return(MDOC_susv3);
309: else if (xstrcmp(argv, "svid4"))
310: return(MDOC_svid4);
311: break;
1.1 kristaps 312:
313: default:
1.8 kristaps 314: break;
1.1 kristaps 315: }
316:
317: return(MDOC_ARG_MAX);
318: }
319:
320:
1.2 kristaps 321: static int
1.9 kristaps 322: postparse(struct mdoc *mdoc, int line, const struct mdoc_arg *v, int pos)
1.2 kristaps 323: {
324:
325: switch (v->arg) {
326: case (MDOC_Offset):
327: assert(v->value);
328: assert(v->value[0]);
329: if (xstrcmp(v->value[0], "left"))
330: break;
331: if (xstrcmp(v->value[0], "right"))
332: break;
333: if (xstrcmp(v->value[0], "center"))
334: break;
335: if (xstrcmp(v->value[0], "indent"))
336: break;
337: if (xstrcmp(v->value[0], "indent-two"))
338: break;
1.9 kristaps 339: return(mdoc_perr(mdoc, line, pos, ERR_SYNTAX_ARGBAD));
1.2 kristaps 340: default:
341: break;
342: }
343:
344: return(1);
345: }
346:
347:
348: static int
1.12 ! kristaps 349: parse_multi(struct mdoc *mdoc, int line,
! 350: struct mdoc_arg *v, int *pos, char *buf)
! 351: {
! 352: int c, ppos;
! 353: char *p;
! 354:
! 355: v->sz = 0;
! 356: v->value = xcalloc(MDOC_LINEARG_MAX, sizeof(char *));
! 357:
! 358: ppos = *pos;
! 359:
! 360: for (v->sz = 0; v->sz < MDOC_LINEARG_MAX; v->sz++) {
! 361: if ('-' == buf[*pos])
! 362: break;
! 363: c = mdoc_args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
! 364: if (ARGS_ERROR == c) {
! 365: free(v->value);
! 366: return(0);
! 367: } else if (ARGS_EOLN == c)
! 368: break;
! 369: v->value[v->sz] = p;
! 370: }
! 371:
! 372: if (0 < v->sz && v->sz < MDOC_LINEARG_MAX)
! 373: return(1);
! 374:
! 375: c = 0 == v->sz ? ERR_SYNTAX_ARGVAL : ERR_SYNTAX_ARGMANY;
! 376: free(v->value);
! 377: return(mdoc_perr(mdoc, line, ppos, c));
! 378: }
! 379:
! 380:
! 381: static int
! 382: parse_single(struct mdoc *mdoc, int line,
1.1 kristaps 383: struct mdoc_arg *v, int *pos, char *buf)
384: {
1.12 ! kristaps 385: int c, ppos;
1.1 kristaps 386: char *p;
387:
388: ppos = *pos;
389:
1.12 ! kristaps 390: c = mdoc_args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
! 391: if (ARGS_ERROR == c)
! 392: return(0);
! 393: if (ARGS_EOLN == c)
! 394: return(mdoc_perr(mdoc, line, ppos, ERR_SYNTAX_ARGVAL));
! 395:
! 396: v->sz = 1;
! 397: v->value = xcalloc(1, sizeof(char *));
! 398: v->value[0] = p;
! 399: return(1);
! 400: }
! 401:
! 402:
! 403: static int
! 404: parse(struct mdoc *mdoc, int line, int tok,
! 405: struct mdoc_arg *v, int *pos, char *buf)
! 406: {
! 407:
! 408: v->sz = 0;
! 409: v->value = NULL;
! 410:
1.2 kristaps 411: switch (v->arg) {
1.3 kristaps 412: case(MDOC_Std):
413: /* FALLTHROUGH */
1.1 kristaps 414: case(MDOC_Width):
415: /* FALLTHROUGH */
416: case(MDOC_Offset):
1.12 ! kristaps 417: return(parse_single(mdoc, line, v, pos, buf));
1.1 kristaps 418: case(MDOC_Column):
1.12 ! kristaps 419: return(parse_multi(mdoc, line, v, pos, buf));
1.1 kristaps 420: default:
1.6 kristaps 421: break;
1.1 kristaps 422: }
423:
424: return(1);
425: }
426:
427:
1.2 kristaps 428: int
1.9 kristaps 429: mdoc_argv(struct mdoc *mdoc, int line, int tok,
1.2 kristaps 430: struct mdoc_arg *v, int *pos, char *buf)
431: {
432: int i, ppos;
433: char *argv;
434:
435: (void)memset(v, 0, sizeof(struct mdoc_arg));
436:
437: if (0 == buf[*pos])
1.5 kristaps 438: return(ARGV_EOLN);
1.2 kristaps 439:
440: assert( ! isspace(buf[*pos]));
441:
1.5 kristaps 442: if ('-' != buf[*pos])
443: return(ARGV_WORD);
1.2 kristaps 444:
445: i = *pos;
446: argv = &buf[++(*pos)];
447:
1.11 kristaps 448: v->line = line;
449: v->pos = *pos;
450:
1.2 kristaps 451: while (buf[*pos] && ! isspace(buf[*pos]))
452: (*pos)++;
453:
454: if (buf[*pos])
455: buf[(*pos)++] = 0;
456:
457: if (MDOC_ARG_MAX == (v->arg = lookup(tok, argv))) {
1.10 kristaps 458: (void)mdoc_pwarn(mdoc, line, i, WARN_SYNTAX_ARGLIKE);
459: return(ARGV_WORD);
1.2 kristaps 460: }
461:
462: while (buf[*pos] && isspace(buf[*pos]))
463: (*pos)++;
464:
465: /* FIXME: whitespace if no value. */
466:
467: ppos = *pos;
1.9 kristaps 468: if ( ! parse(mdoc, line, tok, v, pos, buf))
1.5 kristaps 469: return(ARGV_ERROR);
1.9 kristaps 470: if ( ! postparse(mdoc, line, v, ppos))
1.5 kristaps 471: return(ARGV_ERROR);
1.2 kristaps 472:
1.5 kristaps 473: return(ARGV_ARG);
1.2 kristaps 474: }
475:
476:
1.1 kristaps 477: void
478: mdoc_argv_free(int sz, struct mdoc_arg *arg)
479: {
480: int i;
481:
482: for (i = 0; i < sz; i++) {
483: if (0 == arg[i].sz) {
484: assert(NULL == arg[i].value);
485: continue;
486: }
487: assert(arg[i].value);
488: free(arg[i].value);
489: }
490: }
1.2 kristaps 491: