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1.20 ! kristaps 1: /* $Id: argv.c,v 1.19 2009/01/20 13:05:28 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:
1.20 ! kristaps 28: /*
! 29: * Parse arguments and parameters of macros. Arguments follow the
! 30: * syntax of `-arg [val [valN...]]', while parameters are free-form text
! 31: * following arguments (if any). This file must correctly handle the
! 32: * strange punctuation rules dictated by groff.
! 33: */
! 34:
1.15 kristaps 35: /* FIXME: .It called with -column and quoted arguments. */
36:
1.2 kristaps 37: static int lookup(int, const char *);
1.16 kristaps 38: static int parse(struct mdoc *, int,
1.2 kristaps 39: struct mdoc_arg *, int *, char *);
1.12 kristaps 40: static int parse_single(struct mdoc *, int,
41: struct mdoc_arg *, int *, char *);
42: static int parse_multi(struct mdoc *, int,
43: struct mdoc_arg *, int *, char *);
1.2 kristaps 44: static int postparse(struct mdoc *, int,
45: const struct mdoc_arg *, int);
1.1 kristaps 46:
47:
1.2 kristaps 48: int
1.9 kristaps 49: mdoc_args(struct mdoc *mdoc, int line, int *pos, char *buf, int fl, char **v)
1.1 kristaps 50: {
1.2 kristaps 51: int i;
1.1 kristaps 52:
53: if (0 == buf[*pos])
1.2 kristaps 54: return(ARGS_EOLN);
55:
56: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
1.14 kristaps 57: if ( ! mdoc_pwarn(mdoc, line, *pos, WARN_SYNTAX, "unexpected quoted parameter"))
1.2 kristaps 58: return(ARGS_ERROR);
59:
60: if ('-' == buf[*pos])
1.14 kristaps 61: if ( ! mdoc_pwarn(mdoc, line, *pos, WARN_SYNTAX, "argument-like parameter"))
1.2 kristaps 62: return(ARGS_ERROR);
63:
64: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
1.12 kristaps 65: /*
66: * If ARGS_DELIM, return ARGS_PUNCT if only space-separated
67: * punctuation remains.
68: */
1.2 kristaps 69: for (i = *pos; buf[i]; ) {
70: if ( ! mdoc_iscdelim(buf[i]))
71: break;
72: i++;
73: if (0 == buf[i] || ! isspace(buf[i]))
74: break;
75: i++;
76: while (buf[i] && isspace(buf[i]))
77: i++;
78: }
79: if (0 == buf[i]) {
80: *v = &buf[*pos];
81: return(ARGS_PUNCT);
82: }
83: }
84:
1.12 kristaps 85: /* Parse routine for non-quoted string. */
1.1 kristaps 86:
1.17 kristaps 87: assert(*pos > 0);
88: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
1.1 kristaps 89: *v = &buf[*pos];
90:
1.12 kristaps 91: /* FIXME: UGLY tab-sep processing. */
92:
93: if (ARGS_TABSEP & fl)
94: while (buf[*pos]) {
95: if ('\t' == buf[*pos])
96: break;
97: if ('T' == buf[*pos]) {
98: (*pos)++;
99: if (0 == buf[*pos])
100: break;
101: if ('a' == buf[*pos]) {
102: buf[*pos - 1] = 0;
103: break;
104: }
105: }
106: (*pos)++;
107: }
1.17 kristaps 108: else {
109: while (buf[*pos]) {
110: if (isspace(buf[*pos]))
111: if ('\\' != buf[*pos - 1])
112: break;
1.12 kristaps 113: (*pos)++;
1.17 kristaps 114: }
115: }
1.1 kristaps 116:
117: if (0 == buf[*pos])
1.2 kristaps 118: return(ARGS_WORD);
1.1 kristaps 119:
120: buf[(*pos)++] = 0;
1.12 kristaps 121:
1.1 kristaps 122: if (0 == buf[*pos])
1.2 kristaps 123: return(ARGS_WORD);
1.1 kristaps 124:
1.12 kristaps 125: if ( ! (ARGS_TABSEP & fl))
126: while (buf[*pos] && isspace(buf[*pos]))
127: (*pos)++;
1.1 kristaps 128:
129: if (buf[*pos])
1.2 kristaps 130: return(ARGS_WORD);
1.1 kristaps 131:
1.14 kristaps 132: if ( ! mdoc_pwarn(mdoc, line, *pos, WARN_COMPAT, "whitespace at end-of-line"))
1.2 kristaps 133: return(ARGS_ERROR);
1.1 kristaps 134:
1.2 kristaps 135: return(ARGS_WORD);
136: }
137:
138: /*
139: * If we're a quoted string (and quoted strings are allowed),
140: * then parse ahead to the next quote. If none's found, it's an
1.4 kristaps 141: * error. After, parse to the next word.
1.2 kristaps 142: */
1.1 kristaps 143:
144: *v = &buf[++(*pos)];
145:
146: while (buf[*pos] && '\"' != buf[*pos])
147: (*pos)++;
148:
149: if (0 == buf[*pos]) {
1.14 kristaps 150: (void)mdoc_perr(mdoc, line, *pos, "unterminated quoted parameter");
1.2 kristaps 151: return(ARGS_ERROR);
1.1 kristaps 152: }
153:
154: buf[(*pos)++] = 0;
155: if (0 == buf[*pos])
1.19 kristaps 156: return(ARGS_QWORD);
1.1 kristaps 157:
158: while (buf[*pos] && isspace(buf[*pos]))
159: (*pos)++;
160:
161: if (buf[*pos])
1.19 kristaps 162: return(ARGS_QWORD);
1.1 kristaps 163:
1.14 kristaps 164: if ( ! mdoc_pwarn(mdoc, line, *pos, WARN_COMPAT, "whitespace at end-of-line"))
1.2 kristaps 165: return(ARGS_ERROR);
166:
1.19 kristaps 167: return(ARGS_QWORD);
1.1 kristaps 168: }
169:
170:
1.2 kristaps 171: static int
172: lookup(int tok, const char *argv)
1.1 kristaps 173: {
174:
175: switch (tok) {
1.6 kristaps 176: case (MDOC_An):
177: if (xstrcmp(argv, "split"))
178: return(MDOC_Split);
179: else if (xstrcmp(argv, "nosplit"))
180: return(MDOC_Nosplit);
181: break;
182:
1.2 kristaps 183: case (MDOC_Bd):
1.1 kristaps 184: if (xstrcmp(argv, "ragged"))
185: return(MDOC_Ragged);
186: else if (xstrcmp(argv, "unfilled"))
187: return(MDOC_Unfilled);
1.13 kristaps 188: else if (xstrcmp(argv, "filled"))
189: return(MDOC_Filled);
1.1 kristaps 190: else if (xstrcmp(argv, "literal"))
191: return(MDOC_Literal);
192: else if (xstrcmp(argv, "file"))
193: return(MDOC_File);
194: else if (xstrcmp(argv, "offset"))
195: return(MDOC_Offset);
1.2 kristaps 196: break;
197:
1.8 kristaps 198: case (MDOC_Bf):
199: if (xstrcmp(argv, "emphasis"))
200: return(MDOC_Emphasis);
201: else if (xstrcmp(argv, "literal"))
202: return(MDOC_Literal);
203: else if (xstrcmp(argv, "symbolic"))
204: return(MDOC_Symbolic);
205: break;
206:
1.7 kristaps 207: case (MDOC_Bk):
208: if (xstrcmp(argv, "words"))
209: return(MDOC_Words);
210: break;
211:
1.2 kristaps 212: case (MDOC_Bl):
213: if (xstrcmp(argv, "bullet"))
1.1 kristaps 214: return(MDOC_Bullet);
215: else if (xstrcmp(argv, "dash"))
216: return(MDOC_Dash);
217: else if (xstrcmp(argv, "hyphen"))
218: return(MDOC_Hyphen);
219: else if (xstrcmp(argv, "item"))
220: return(MDOC_Item);
221: else if (xstrcmp(argv, "enum"))
222: return(MDOC_Enum);
223: else if (xstrcmp(argv, "tag"))
224: return(MDOC_Tag);
225: else if (xstrcmp(argv, "diag"))
226: return(MDOC_Diag);
227: else if (xstrcmp(argv, "hang"))
228: return(MDOC_Hang);
229: else if (xstrcmp(argv, "ohang"))
230: return(MDOC_Ohang);
231: else if (xstrcmp(argv, "inset"))
232: return(MDOC_Inset);
233: else if (xstrcmp(argv, "column"))
234: return(MDOC_Column);
235: else if (xstrcmp(argv, "width"))
236: return(MDOC_Width);
1.2 kristaps 237: else if (xstrcmp(argv, "offset"))
238: return(MDOC_Offset);
1.1 kristaps 239: else if (xstrcmp(argv, "compact"))
240: return(MDOC_Compact);
1.2 kristaps 241: break;
1.3 kristaps 242:
243: case (MDOC_Rv):
244: /* FALLTHROUGH */
245: case (MDOC_Ex):
246: if (xstrcmp(argv, "std"))
247: return(MDOC_Std);
248: break;
1.5 kristaps 249:
250: case (MDOC_St):
251: if (xstrcmp(argv, "p1003.1-88"))
252: return(MDOC_p1003_1_88);
253: else if (xstrcmp(argv, "p1003.1-90"))
254: return(MDOC_p1003_1_90);
255: else if (xstrcmp(argv, "p1003.1-96"))
256: return(MDOC_p1003_1_96);
257: else if (xstrcmp(argv, "p1003.1-2001"))
258: return(MDOC_p1003_1_2001);
259: else if (xstrcmp(argv, "p1003.1-2004"))
260: return(MDOC_p1003_1_2004);
261: else if (xstrcmp(argv, "p1003.1"))
262: return(MDOC_p1003_1);
263: else if (xstrcmp(argv, "p1003.1b"))
264: return(MDOC_p1003_1b);
265: else if (xstrcmp(argv, "p1003.1b-93"))
266: return(MDOC_p1003_1b_93);
267: else if (xstrcmp(argv, "p1003.1c-95"))
268: return(MDOC_p1003_1c_95);
269: else if (xstrcmp(argv, "p1003.1g-2000"))
270: return(MDOC_p1003_1g_2000);
271: else if (xstrcmp(argv, "p1003.2-92"))
272: return(MDOC_p1003_2_92);
273: else if (xstrcmp(argv, "p1003.2-95"))
274: return(MDOC_p1387_2_95);
275: else if (xstrcmp(argv, "p1003.2"))
276: return(MDOC_p1003_2);
277: else if (xstrcmp(argv, "p1387.2-95"))
278: return(MDOC_p1387_2);
279: else if (xstrcmp(argv, "isoC-90"))
280: return(MDOC_isoC_90);
281: else if (xstrcmp(argv, "isoC-amd1"))
282: return(MDOC_isoC_amd1);
283: else if (xstrcmp(argv, "isoC-tcor1"))
284: return(MDOC_isoC_tcor1);
285: else if (xstrcmp(argv, "isoC-tcor2"))
286: return(MDOC_isoC_tcor2);
287: else if (xstrcmp(argv, "isoC-99"))
288: return(MDOC_isoC_99);
289: else if (xstrcmp(argv, "ansiC"))
290: return(MDOC_ansiC);
291: else if (xstrcmp(argv, "ansiC-89"))
292: return(MDOC_ansiC_89);
293: else if (xstrcmp(argv, "ansiC-99"))
294: return(MDOC_ansiC_99);
295: else if (xstrcmp(argv, "ieee754"))
296: return(MDOC_ieee754);
297: else if (xstrcmp(argv, "iso8802-3"))
298: return(MDOC_iso8802_3);
299: else if (xstrcmp(argv, "xpg3"))
300: return(MDOC_xpg3);
301: else if (xstrcmp(argv, "xpg4"))
302: return(MDOC_xpg4);
303: else if (xstrcmp(argv, "xpg4.2"))
304: return(MDOC_xpg4_2);
305: else if (xstrcmp(argv, "xpg4.3"))
306: return(MDOC_xpg4_3);
307: else if (xstrcmp(argv, "xbd5"))
308: return(MDOC_xbd5);
309: else if (xstrcmp(argv, "xcu5"))
310: return(MDOC_xcu5);
311: else if (xstrcmp(argv, "xsh5"))
312: return(MDOC_xsh5);
313: else if (xstrcmp(argv, "xns5"))
314: return(MDOC_xns5);
315: else if (xstrcmp(argv, "xns5.2d2.0"))
316: return(MDOC_xns5_2d2_0);
317: else if (xstrcmp(argv, "xcurses4.2"))
318: return(MDOC_xcurses4_2);
319: else if (xstrcmp(argv, "susv2"))
320: return(MDOC_susv2);
321: else if (xstrcmp(argv, "susv3"))
322: return(MDOC_susv3);
323: else if (xstrcmp(argv, "svid4"))
324: return(MDOC_svid4);
325: break;
1.1 kristaps 326:
327: default:
1.8 kristaps 328: break;
1.1 kristaps 329: }
330:
331: return(MDOC_ARG_MAX);
332: }
333:
334:
1.2 kristaps 335: static int
1.9 kristaps 336: postparse(struct mdoc *mdoc, int line, const struct mdoc_arg *v, int pos)
1.2 kristaps 337: {
338:
339: switch (v->arg) {
340: case (MDOC_Offset):
341: assert(v->value);
342: assert(v->value[0]);
343: if (xstrcmp(v->value[0], "left"))
344: break;
345: if (xstrcmp(v->value[0], "right"))
346: break;
347: if (xstrcmp(v->value[0], "center"))
348: break;
349: if (xstrcmp(v->value[0], "indent"))
350: break;
351: if (xstrcmp(v->value[0], "indent-two"))
352: break;
1.14 kristaps 353: return(mdoc_perr(mdoc, line, pos, "invalid offset value"));
1.2 kristaps 354: default:
355: break;
356: }
357:
358: return(1);
359: }
360:
361:
362: static int
1.12 kristaps 363: parse_multi(struct mdoc *mdoc, int line,
364: struct mdoc_arg *v, int *pos, char *buf)
365: {
366: int c, ppos;
367: char *p;
368:
369: v->sz = 0;
370: v->value = xcalloc(MDOC_LINEARG_MAX, sizeof(char *));
371:
372: ppos = *pos;
373:
374: for (v->sz = 0; v->sz < MDOC_LINEARG_MAX; v->sz++) {
375: if ('-' == buf[*pos])
376: break;
377: c = mdoc_args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
378: if (ARGS_ERROR == c) {
379: free(v->value);
380: return(0);
381: } else if (ARGS_EOLN == c)
382: break;
383: v->value[v->sz] = p;
384: }
385:
386: if (0 < v->sz && v->sz < MDOC_LINEARG_MAX)
387: return(1);
388:
389: free(v->value);
1.14 kristaps 390: return(mdoc_perr(mdoc, line, ppos, 0 == v->sz ?
391: "argument requires a value" :
392: "too many values to argument"));
1.12 kristaps 393: }
394:
395:
396: static int
397: parse_single(struct mdoc *mdoc, int line,
1.1 kristaps 398: struct mdoc_arg *v, int *pos, char *buf)
399: {
1.12 kristaps 400: int c, ppos;
1.1 kristaps 401: char *p;
402:
403: ppos = *pos;
404:
1.12 kristaps 405: c = mdoc_args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
406: if (ARGS_ERROR == c)
407: return(0);
408: if (ARGS_EOLN == c)
1.14 kristaps 409: return(mdoc_perr(mdoc, line, ppos, "argument requires a value"));
1.12 kristaps 410:
411: v->sz = 1;
412: v->value = xcalloc(1, sizeof(char *));
413: v->value[0] = p;
414: return(1);
415: }
416:
417:
418: static int
1.16 kristaps 419: parse(struct mdoc *mdoc, int line,
1.12 kristaps 420: struct mdoc_arg *v, int *pos, char *buf)
421: {
422:
423: v->sz = 0;
424: v->value = NULL;
425:
1.2 kristaps 426: switch (v->arg) {
1.3 kristaps 427: case(MDOC_Std):
428: /* FALLTHROUGH */
1.1 kristaps 429: case(MDOC_Width):
430: /* FALLTHROUGH */
431: case(MDOC_Offset):
1.12 kristaps 432: return(parse_single(mdoc, line, v, pos, buf));
1.1 kristaps 433: case(MDOC_Column):
1.12 kristaps 434: return(parse_multi(mdoc, line, v, pos, buf));
1.1 kristaps 435: default:
1.6 kristaps 436: break;
1.1 kristaps 437: }
438:
439: return(1);
440: }
441:
442:
1.2 kristaps 443: int
1.9 kristaps 444: mdoc_argv(struct mdoc *mdoc, int line, int tok,
1.2 kristaps 445: struct mdoc_arg *v, int *pos, char *buf)
446: {
447: int i, ppos;
448: char *argv;
449:
450: (void)memset(v, 0, sizeof(struct mdoc_arg));
451:
452: if (0 == buf[*pos])
1.5 kristaps 453: return(ARGV_EOLN);
1.2 kristaps 454:
455: assert( ! isspace(buf[*pos]));
456:
1.5 kristaps 457: if ('-' != buf[*pos])
458: return(ARGV_WORD);
1.2 kristaps 459:
460: i = *pos;
461: argv = &buf[++(*pos)];
462:
1.11 kristaps 463: v->line = line;
464: v->pos = *pos;
465:
1.17 kristaps 466: assert(*pos > 0);
467: while (buf[*pos]) {
468: if (isspace(buf[*pos]))
469: if ('\\' != buf[*pos - 1])
470: break;
1.2 kristaps 471: (*pos)++;
1.17 kristaps 472: }
1.2 kristaps 473:
474: if (buf[*pos])
475: buf[(*pos)++] = 0;
476:
477: if (MDOC_ARG_MAX == (v->arg = lookup(tok, argv))) {
1.14 kristaps 478: if ( ! mdoc_pwarn(mdoc, line, i, WARN_SYNTAX, "argument-like parameter"))
479: return(ARGV_ERROR);
1.10 kristaps 480: return(ARGV_WORD);
1.2 kristaps 481: }
482:
483: while (buf[*pos] && isspace(buf[*pos]))
484: (*pos)++;
485:
486: /* FIXME: whitespace if no value. */
487:
488: ppos = *pos;
1.16 kristaps 489: if ( ! parse(mdoc, line, v, pos, buf))
1.5 kristaps 490: return(ARGV_ERROR);
1.9 kristaps 491: if ( ! postparse(mdoc, line, v, ppos))
1.5 kristaps 492: return(ARGV_ERROR);
1.2 kristaps 493:
1.5 kristaps 494: return(ARGV_ARG);
1.2 kristaps 495: }
496:
497:
1.1 kristaps 498: void
499: mdoc_argv_free(int sz, struct mdoc_arg *arg)
500: {
501: int i;
502:
503: for (i = 0; i < sz; i++) {
504: if (0 == arg[i].sz) {
505: assert(NULL == arg[i].value);
506: continue;
507: }
508: assert(arg[i].value);
509: free(arg[i].value);
510: }
511: }
1.2 kristaps 512: