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1.15 ! kristaps 1: /* $Id: argv.c,v 1.14 2009/01/16 11:50:54 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:
1.15 ! kristaps 29: /* FIXME: .It called with -column and quoted arguments. */
! 30:
1.2 kristaps 31: static int lookup(int, const char *);
1.9 kristaps 32: static int parse(struct mdoc *, int, int,
1.2 kristaps 33: struct mdoc_arg *, int *, char *);
1.12 kristaps 34: static int parse_single(struct mdoc *, int,
35: struct mdoc_arg *, int *, char *);
36: static int parse_multi(struct mdoc *, int,
37: struct mdoc_arg *, int *, char *);
1.2 kristaps 38: static int postparse(struct mdoc *, int,
39: const struct mdoc_arg *, int);
1.1 kristaps 40:
41:
1.2 kristaps 42: int
1.9 kristaps 43: mdoc_args(struct mdoc *mdoc, int line, int *pos, char *buf, int fl, char **v)
1.1 kristaps 44: {
1.2 kristaps 45: int i;
1.1 kristaps 46:
47: if (0 == buf[*pos])
1.2 kristaps 48: return(ARGS_EOLN);
49:
50: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
1.14 kristaps 51: if ( ! mdoc_pwarn(mdoc, line, *pos, WARN_SYNTAX, "unexpected quoted parameter"))
1.2 kristaps 52: return(ARGS_ERROR);
53:
54: if ('-' == buf[*pos])
1.14 kristaps 55: if ( ! mdoc_pwarn(mdoc, line, *pos, WARN_SYNTAX, "argument-like parameter"))
1.2 kristaps 56: return(ARGS_ERROR);
57:
58: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
1.12 kristaps 59: /*
60: * If ARGS_DELIM, return ARGS_PUNCT if only space-separated
61: * punctuation remains.
62: */
1.2 kristaps 63: for (i = *pos; buf[i]; ) {
64: if ( ! mdoc_iscdelim(buf[i]))
65: break;
66: i++;
67: if (0 == buf[i] || ! isspace(buf[i]))
68: break;
69: i++;
70: while (buf[i] && isspace(buf[i]))
71: i++;
72: }
73: if (0 == buf[i]) {
74: *v = &buf[*pos];
75: return(ARGS_PUNCT);
76: }
77: }
78:
1.12 kristaps 79: /* Parse routine for non-quoted string. */
1.1 kristaps 80:
81: if ('\"' != buf[*pos]) {
82: *v = &buf[*pos];
83:
1.12 kristaps 84: /* FIXME: UGLY tab-sep processing. */
85:
86: if (ARGS_TABSEP & fl)
87: while (buf[*pos]) {
88: if ('\t' == buf[*pos])
89: break;
90: if ('T' == buf[*pos]) {
91: (*pos)++;
92: if (0 == buf[*pos])
93: break;
94: if ('a' == buf[*pos]) {
95: buf[*pos - 1] = 0;
96: break;
97: }
98: }
99: (*pos)++;
100: }
101: else
102: while (buf[*pos] && ! isspace(buf[*pos]))
103: (*pos)++;
1.1 kristaps 104:
105: if (0 == buf[*pos])
1.2 kristaps 106: return(ARGS_WORD);
1.1 kristaps 107:
108: buf[(*pos)++] = 0;
1.12 kristaps 109:
1.1 kristaps 110: if (0 == buf[*pos])
1.2 kristaps 111: return(ARGS_WORD);
1.1 kristaps 112:
1.12 kristaps 113: if ( ! (ARGS_TABSEP & fl))
114: while (buf[*pos] && isspace(buf[*pos]))
115: (*pos)++;
1.1 kristaps 116:
117: if (buf[*pos])
1.2 kristaps 118: return(ARGS_WORD);
1.1 kristaps 119:
1.14 kristaps 120: if ( ! mdoc_pwarn(mdoc, line, *pos, WARN_COMPAT, "whitespace at end-of-line"))
1.2 kristaps 121: return(ARGS_ERROR);
1.1 kristaps 122:
1.2 kristaps 123: return(ARGS_WORD);
124: }
125:
126: /*
127: * If we're a quoted string (and quoted strings are allowed),
128: * then parse ahead to the next quote. If none's found, it's an
1.4 kristaps 129: * error. After, parse to the next word.
1.2 kristaps 130: */
1.1 kristaps 131:
132: *v = &buf[++(*pos)];
133:
134: while (buf[*pos] && '\"' != buf[*pos])
135: (*pos)++;
136:
137: if (0 == buf[*pos]) {
1.14 kristaps 138: (void)mdoc_perr(mdoc, line, *pos, "unterminated quoted parameter");
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:
1.14 kristaps 152: if ( ! mdoc_pwarn(mdoc, line, *pos, WARN_COMPAT, "whitespace at end-of-line"))
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);
1.13 kristaps 176: else if (xstrcmp(argv, "filled"))
177: return(MDOC_Filled);
1.1 kristaps 178: else if (xstrcmp(argv, "literal"))
179: return(MDOC_Literal);
180: else if (xstrcmp(argv, "file"))
181: return(MDOC_File);
182: else if (xstrcmp(argv, "offset"))
183: return(MDOC_Offset);
1.2 kristaps 184: break;
185:
1.8 kristaps 186: case (MDOC_Bf):
187: if (xstrcmp(argv, "emphasis"))
188: return(MDOC_Emphasis);
189: else if (xstrcmp(argv, "literal"))
190: return(MDOC_Literal);
191: else if (xstrcmp(argv, "symbolic"))
192: return(MDOC_Symbolic);
193: break;
194:
1.7 kristaps 195: case (MDOC_Bk):
196: if (xstrcmp(argv, "words"))
197: return(MDOC_Words);
198: break;
199:
1.2 kristaps 200: case (MDOC_Bl):
201: if (xstrcmp(argv, "bullet"))
1.1 kristaps 202: return(MDOC_Bullet);
203: else if (xstrcmp(argv, "dash"))
204: return(MDOC_Dash);
205: else if (xstrcmp(argv, "hyphen"))
206: return(MDOC_Hyphen);
207: else if (xstrcmp(argv, "item"))
208: return(MDOC_Item);
209: else if (xstrcmp(argv, "enum"))
210: return(MDOC_Enum);
211: else if (xstrcmp(argv, "tag"))
212: return(MDOC_Tag);
213: else if (xstrcmp(argv, "diag"))
214: return(MDOC_Diag);
215: else if (xstrcmp(argv, "hang"))
216: return(MDOC_Hang);
217: else if (xstrcmp(argv, "ohang"))
218: return(MDOC_Ohang);
219: else if (xstrcmp(argv, "inset"))
220: return(MDOC_Inset);
221: else if (xstrcmp(argv, "column"))
222: return(MDOC_Column);
223: else if (xstrcmp(argv, "width"))
224: return(MDOC_Width);
1.2 kristaps 225: else if (xstrcmp(argv, "offset"))
226: return(MDOC_Offset);
1.1 kristaps 227: else if (xstrcmp(argv, "compact"))
228: return(MDOC_Compact);
1.2 kristaps 229: break;
1.3 kristaps 230:
231: case (MDOC_Rv):
232: /* FALLTHROUGH */
233: case (MDOC_Ex):
234: if (xstrcmp(argv, "std"))
235: return(MDOC_Std);
236: break;
1.5 kristaps 237:
238: case (MDOC_St):
239: if (xstrcmp(argv, "p1003.1-88"))
240: return(MDOC_p1003_1_88);
241: else if (xstrcmp(argv, "p1003.1-90"))
242: return(MDOC_p1003_1_90);
243: else if (xstrcmp(argv, "p1003.1-96"))
244: return(MDOC_p1003_1_96);
245: else if (xstrcmp(argv, "p1003.1-2001"))
246: return(MDOC_p1003_1_2001);
247: else if (xstrcmp(argv, "p1003.1-2004"))
248: return(MDOC_p1003_1_2004);
249: else if (xstrcmp(argv, "p1003.1"))
250: return(MDOC_p1003_1);
251: else if (xstrcmp(argv, "p1003.1b"))
252: return(MDOC_p1003_1b);
253: else if (xstrcmp(argv, "p1003.1b-93"))
254: return(MDOC_p1003_1b_93);
255: else if (xstrcmp(argv, "p1003.1c-95"))
256: return(MDOC_p1003_1c_95);
257: else if (xstrcmp(argv, "p1003.1g-2000"))
258: return(MDOC_p1003_1g_2000);
259: else if (xstrcmp(argv, "p1003.2-92"))
260: return(MDOC_p1003_2_92);
261: else if (xstrcmp(argv, "p1003.2-95"))
262: return(MDOC_p1387_2_95);
263: else if (xstrcmp(argv, "p1003.2"))
264: return(MDOC_p1003_2);
265: else if (xstrcmp(argv, "p1387.2-95"))
266: return(MDOC_p1387_2);
267: else if (xstrcmp(argv, "isoC-90"))
268: return(MDOC_isoC_90);
269: else if (xstrcmp(argv, "isoC-amd1"))
270: return(MDOC_isoC_amd1);
271: else if (xstrcmp(argv, "isoC-tcor1"))
272: return(MDOC_isoC_tcor1);
273: else if (xstrcmp(argv, "isoC-tcor2"))
274: return(MDOC_isoC_tcor2);
275: else if (xstrcmp(argv, "isoC-99"))
276: return(MDOC_isoC_99);
277: else if (xstrcmp(argv, "ansiC"))
278: return(MDOC_ansiC);
279: else if (xstrcmp(argv, "ansiC-89"))
280: return(MDOC_ansiC_89);
281: else if (xstrcmp(argv, "ansiC-99"))
282: return(MDOC_ansiC_99);
283: else if (xstrcmp(argv, "ieee754"))
284: return(MDOC_ieee754);
285: else if (xstrcmp(argv, "iso8802-3"))
286: return(MDOC_iso8802_3);
287: else if (xstrcmp(argv, "xpg3"))
288: return(MDOC_xpg3);
289: else if (xstrcmp(argv, "xpg4"))
290: return(MDOC_xpg4);
291: else if (xstrcmp(argv, "xpg4.2"))
292: return(MDOC_xpg4_2);
293: else if (xstrcmp(argv, "xpg4.3"))
294: return(MDOC_xpg4_3);
295: else if (xstrcmp(argv, "xbd5"))
296: return(MDOC_xbd5);
297: else if (xstrcmp(argv, "xcu5"))
298: return(MDOC_xcu5);
299: else if (xstrcmp(argv, "xsh5"))
300: return(MDOC_xsh5);
301: else if (xstrcmp(argv, "xns5"))
302: return(MDOC_xns5);
303: else if (xstrcmp(argv, "xns5.2d2.0"))
304: return(MDOC_xns5_2d2_0);
305: else if (xstrcmp(argv, "xcurses4.2"))
306: return(MDOC_xcurses4_2);
307: else if (xstrcmp(argv, "susv2"))
308: return(MDOC_susv2);
309: else if (xstrcmp(argv, "susv3"))
310: return(MDOC_susv3);
311: else if (xstrcmp(argv, "svid4"))
312: return(MDOC_svid4);
313: break;
1.1 kristaps 314:
315: default:
1.8 kristaps 316: break;
1.1 kristaps 317: }
318:
319: return(MDOC_ARG_MAX);
320: }
321:
322:
1.2 kristaps 323: static int
1.9 kristaps 324: postparse(struct mdoc *mdoc, int line, const struct mdoc_arg *v, int pos)
1.2 kristaps 325: {
326:
327: switch (v->arg) {
328: case (MDOC_Offset):
329: assert(v->value);
330: assert(v->value[0]);
331: if (xstrcmp(v->value[0], "left"))
332: break;
333: if (xstrcmp(v->value[0], "right"))
334: break;
335: if (xstrcmp(v->value[0], "center"))
336: break;
337: if (xstrcmp(v->value[0], "indent"))
338: break;
339: if (xstrcmp(v->value[0], "indent-two"))
340: break;
1.14 kristaps 341: return(mdoc_perr(mdoc, line, pos, "invalid offset value"));
1.2 kristaps 342: default:
343: break;
344: }
345:
346: return(1);
347: }
348:
349:
350: static int
1.12 kristaps 351: parse_multi(struct mdoc *mdoc, int line,
352: struct mdoc_arg *v, int *pos, char *buf)
353: {
354: int c, ppos;
355: char *p;
356:
357: v->sz = 0;
358: v->value = xcalloc(MDOC_LINEARG_MAX, sizeof(char *));
359:
360: ppos = *pos;
361:
362: for (v->sz = 0; v->sz < MDOC_LINEARG_MAX; v->sz++) {
363: if ('-' == buf[*pos])
364: break;
365: c = mdoc_args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
366: if (ARGS_ERROR == c) {
367: free(v->value);
368: return(0);
369: } else if (ARGS_EOLN == c)
370: break;
371: v->value[v->sz] = p;
372: }
373:
374: if (0 < v->sz && v->sz < MDOC_LINEARG_MAX)
375: return(1);
376:
377: free(v->value);
1.14 kristaps 378: return(mdoc_perr(mdoc, line, ppos, 0 == v->sz ?
379: "argument requires a value" :
380: "too many values to argument"));
1.12 kristaps 381: }
382:
383:
384: static int
385: parse_single(struct mdoc *mdoc, int line,
1.1 kristaps 386: struct mdoc_arg *v, int *pos, char *buf)
387: {
1.12 kristaps 388: int c, ppos;
1.1 kristaps 389: char *p;
390:
391: ppos = *pos;
392:
1.12 kristaps 393: c = mdoc_args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
394: if (ARGS_ERROR == c)
395: return(0);
396: if (ARGS_EOLN == c)
1.14 kristaps 397: return(mdoc_perr(mdoc, line, ppos, "argument requires a value"));
1.12 kristaps 398:
399: v->sz = 1;
400: v->value = xcalloc(1, sizeof(char *));
401: v->value[0] = p;
402: return(1);
403: }
404:
405:
406: static int
407: parse(struct mdoc *mdoc, int line, int tok,
408: struct mdoc_arg *v, int *pos, char *buf)
409: {
410:
411: v->sz = 0;
412: v->value = NULL;
413:
1.2 kristaps 414: switch (v->arg) {
1.3 kristaps 415: case(MDOC_Std):
416: /* FALLTHROUGH */
1.1 kristaps 417: case(MDOC_Width):
418: /* FALLTHROUGH */
419: case(MDOC_Offset):
1.12 kristaps 420: return(parse_single(mdoc, line, v, pos, buf));
1.1 kristaps 421: case(MDOC_Column):
1.12 kristaps 422: return(parse_multi(mdoc, line, v, pos, buf));
1.1 kristaps 423: default:
1.6 kristaps 424: break;
1.1 kristaps 425: }
426:
427: return(1);
428: }
429:
430:
1.2 kristaps 431: int
1.9 kristaps 432: mdoc_argv(struct mdoc *mdoc, int line, int tok,
1.2 kristaps 433: struct mdoc_arg *v, int *pos, char *buf)
434: {
435: int i, ppos;
436: char *argv;
437:
438: (void)memset(v, 0, sizeof(struct mdoc_arg));
439:
440: if (0 == buf[*pos])
1.5 kristaps 441: return(ARGV_EOLN);
1.2 kristaps 442:
443: assert( ! isspace(buf[*pos]));
444:
1.5 kristaps 445: if ('-' != buf[*pos])
446: return(ARGV_WORD);
1.2 kristaps 447:
448: i = *pos;
449: argv = &buf[++(*pos)];
450:
1.11 kristaps 451: v->line = line;
452: v->pos = *pos;
453:
1.2 kristaps 454: while (buf[*pos] && ! isspace(buf[*pos]))
455: (*pos)++;
456:
457: if (buf[*pos])
458: buf[(*pos)++] = 0;
459:
460: if (MDOC_ARG_MAX == (v->arg = lookup(tok, argv))) {
1.14 kristaps 461: if ( ! mdoc_pwarn(mdoc, line, i, WARN_SYNTAX, "argument-like parameter"))
462: return(ARGV_ERROR);
1.10 kristaps 463: return(ARGV_WORD);
1.2 kristaps 464: }
465:
466: while (buf[*pos] && isspace(buf[*pos]))
467: (*pos)++;
468:
469: /* FIXME: whitespace if no value. */
470:
471: ppos = *pos;
1.9 kristaps 472: if ( ! parse(mdoc, line, tok, v, pos, buf))
1.5 kristaps 473: return(ARGV_ERROR);
1.9 kristaps 474: if ( ! postparse(mdoc, line, v, ppos))
1.5 kristaps 475: return(ARGV_ERROR);
1.2 kristaps 476:
1.5 kristaps 477: return(ARGV_ARG);
1.2 kristaps 478: }
479:
480:
1.1 kristaps 481: void
482: mdoc_argv_free(int sz, struct mdoc_arg *arg)
483: {
484: int i;
485:
486: for (i = 0; i < sz; i++) {
487: if (0 == arg[i].sz) {
488: assert(NULL == arg[i].value);
489: continue;
490: }
491: assert(arg[i].value);
492: free(arg[i].value);
493: }
494: }
1.2 kristaps 495: