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1.5 ! kristaps 1: /* $Id: argv.c,v 1.4 2008/12/30 19:06:03 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 *);
30: static int parse(struct mdoc *, int,
31: struct mdoc_arg *, int *, char *);
32: static int postparse(struct mdoc *, int,
33: const struct mdoc_arg *, int);
1.1 kristaps 34:
35:
1.2 kristaps 36: int
37: mdoc_args(struct mdoc *mdoc, int tok, int *pos, char *buf, int fl, char **v)
1.1 kristaps 38: {
1.2 kristaps 39: int i;
1.1 kristaps 40:
41: if (0 == buf[*pos])
1.2 kristaps 42: return(ARGS_EOLN);
43:
44: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
45: if ( ! mdoc_warn(mdoc, tok, *pos, WARN_SYNTAX_QUOTED))
46: return(ARGS_ERROR);
47:
48: if ('-' == buf[*pos])
49: if ( ! mdoc_warn(mdoc, tok, *pos, WARN_SYNTAX_ARGLIKE))
50: return(ARGS_ERROR);
51:
52: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
53: for (i = *pos; buf[i]; ) {
54: if ( ! mdoc_iscdelim(buf[i]))
55: break;
56: i++;
57: if (0 == buf[i] || ! isspace(buf[i]))
58: break;
59: i++;
60: while (buf[i] && isspace(buf[i]))
61: i++;
62: }
63: if (0 == buf[i]) {
64: *v = &buf[*pos];
65: return(ARGS_PUNCT);
66: }
67: }
68:
69: /*
70: * Parse routine for non-quoted string.
71: */
1.1 kristaps 72:
73: if ('\"' != buf[*pos]) {
74: *v = &buf[*pos];
75:
76: while (buf[*pos] && ! isspace(buf[*pos]))
77: (*pos)++;
78:
79: if (0 == buf[*pos])
1.2 kristaps 80: return(ARGS_WORD);
1.1 kristaps 81:
82: buf[(*pos)++] = 0;
83: if (0 == buf[*pos])
1.2 kristaps 84: return(ARGS_WORD);
1.1 kristaps 85:
86: while (buf[*pos] && isspace(buf[*pos]))
87: (*pos)++;
88:
89: if (buf[*pos])
1.2 kristaps 90: return(ARGS_WORD);
1.1 kristaps 91:
92: if ( ! mdoc_warn(mdoc, tok, *pos, WARN_SYNTAX_WS_EOLN))
1.2 kristaps 93: return(ARGS_ERROR);
1.1 kristaps 94:
1.2 kristaps 95: return(ARGS_WORD);
96: }
97:
98: /*
99: * If we're a quoted string (and quoted strings are allowed),
100: * then parse ahead to the next quote. If none's found, it's an
1.4 kristaps 101: * error. After, parse to the next word.
1.2 kristaps 102: */
1.1 kristaps 103:
104: *v = &buf[++(*pos)];
105:
106: while (buf[*pos] && '\"' != buf[*pos])
107: (*pos)++;
108:
109: if (0 == buf[*pos]) {
110: (void)mdoc_err(mdoc, tok, *pos, ERR_SYNTAX_UNQUOTE);
1.2 kristaps 111: return(ARGS_ERROR);
1.1 kristaps 112: }
113:
114: buf[(*pos)++] = 0;
115: if (0 == buf[*pos])
1.2 kristaps 116: return(ARGS_WORD);
1.1 kristaps 117:
118: while (buf[*pos] && isspace(buf[*pos]))
119: (*pos)++;
120:
121: if (buf[*pos])
1.2 kristaps 122: return(ARGS_WORD);
1.1 kristaps 123:
124: if ( ! mdoc_warn(mdoc, tok, *pos, WARN_SYNTAX_WS_EOLN))
1.2 kristaps 125: return(ARGS_ERROR);
126:
127: return(ARGS_WORD);
1.1 kristaps 128: }
129:
130:
1.2 kristaps 131: static int
132: lookup(int tok, const char *argv)
1.1 kristaps 133: {
134:
135: switch (tok) {
1.2 kristaps 136: case (MDOC_Bd):
1.1 kristaps 137: if (xstrcmp(argv, "ragged"))
138: return(MDOC_Ragged);
139: else if (xstrcmp(argv, "unfilled"))
140: return(MDOC_Unfilled);
141: else if (xstrcmp(argv, "literal"))
142: return(MDOC_Literal);
143: else if (xstrcmp(argv, "file"))
144: return(MDOC_File);
145: else if (xstrcmp(argv, "offset"))
146: return(MDOC_Offset);
1.2 kristaps 147: break;
148:
149: case (MDOC_Bl):
150: if (xstrcmp(argv, "bullet"))
1.1 kristaps 151: return(MDOC_Bullet);
152: else if (xstrcmp(argv, "dash"))
153: return(MDOC_Dash);
154: else if (xstrcmp(argv, "hyphen"))
155: return(MDOC_Hyphen);
156: else if (xstrcmp(argv, "item"))
157: return(MDOC_Item);
158: else if (xstrcmp(argv, "enum"))
159: return(MDOC_Enum);
160: else if (xstrcmp(argv, "tag"))
161: return(MDOC_Tag);
162: else if (xstrcmp(argv, "diag"))
163: return(MDOC_Diag);
164: else if (xstrcmp(argv, "hang"))
165: return(MDOC_Hang);
166: else if (xstrcmp(argv, "ohang"))
167: return(MDOC_Ohang);
168: else if (xstrcmp(argv, "inset"))
169: return(MDOC_Inset);
170: else if (xstrcmp(argv, "column"))
171: return(MDOC_Column);
172: else if (xstrcmp(argv, "width"))
173: return(MDOC_Width);
1.2 kristaps 174: else if (xstrcmp(argv, "offset"))
175: return(MDOC_Offset);
1.1 kristaps 176: else if (xstrcmp(argv, "compact"))
177: return(MDOC_Compact);
1.2 kristaps 178: break;
1.3 kristaps 179:
180: case (MDOC_Rv):
181: /* FALLTHROUGH */
182: case (MDOC_Ex):
183: if (xstrcmp(argv, "std"))
184: return(MDOC_Std);
185: break;
1.5 ! kristaps 186:
! 187: case (MDOC_St):
! 188: if (xstrcmp(argv, "p1003.1-88"))
! 189: return(MDOC_p1003_1_88);
! 190: else if (xstrcmp(argv, "p1003.1-90"))
! 191: return(MDOC_p1003_1_90);
! 192: else if (xstrcmp(argv, "p1003.1-96"))
! 193: return(MDOC_p1003_1_96);
! 194: else if (xstrcmp(argv, "p1003.1-2001"))
! 195: return(MDOC_p1003_1_2001);
! 196: else if (xstrcmp(argv, "p1003.1-2004"))
! 197: return(MDOC_p1003_1_2004);
! 198: else if (xstrcmp(argv, "p1003.1"))
! 199: return(MDOC_p1003_1);
! 200: else if (xstrcmp(argv, "p1003.1b"))
! 201: return(MDOC_p1003_1b);
! 202: else if (xstrcmp(argv, "p1003.1b-93"))
! 203: return(MDOC_p1003_1b_93);
! 204: else if (xstrcmp(argv, "p1003.1c-95"))
! 205: return(MDOC_p1003_1c_95);
! 206: else if (xstrcmp(argv, "p1003.1g-2000"))
! 207: return(MDOC_p1003_1g_2000);
! 208: else if (xstrcmp(argv, "p1003.2-92"))
! 209: return(MDOC_p1003_2_92);
! 210: else if (xstrcmp(argv, "p1003.2-95"))
! 211: return(MDOC_p1387_2_95);
! 212: else if (xstrcmp(argv, "p1003.2"))
! 213: return(MDOC_p1003_2);
! 214: else if (xstrcmp(argv, "p1387.2-95"))
! 215: return(MDOC_p1387_2);
! 216: else if (xstrcmp(argv, "isoC-90"))
! 217: return(MDOC_isoC_90);
! 218: else if (xstrcmp(argv, "isoC-amd1"))
! 219: return(MDOC_isoC_amd1);
! 220: else if (xstrcmp(argv, "isoC-tcor1"))
! 221: return(MDOC_isoC_tcor1);
! 222: else if (xstrcmp(argv, "isoC-tcor2"))
! 223: return(MDOC_isoC_tcor2);
! 224: else if (xstrcmp(argv, "isoC-99"))
! 225: return(MDOC_isoC_99);
! 226: else if (xstrcmp(argv, "ansiC"))
! 227: return(MDOC_ansiC);
! 228: else if (xstrcmp(argv, "ansiC-89"))
! 229: return(MDOC_ansiC_89);
! 230: else if (xstrcmp(argv, "ansiC-99"))
! 231: return(MDOC_ansiC_99);
! 232: else if (xstrcmp(argv, "ieee754"))
! 233: return(MDOC_ieee754);
! 234: else if (xstrcmp(argv, "iso8802-3"))
! 235: return(MDOC_iso8802_3);
! 236: else if (xstrcmp(argv, "xpg3"))
! 237: return(MDOC_xpg3);
! 238: else if (xstrcmp(argv, "xpg4"))
! 239: return(MDOC_xpg4);
! 240: else if (xstrcmp(argv, "xpg4.2"))
! 241: return(MDOC_xpg4_2);
! 242: else if (xstrcmp(argv, "xpg4.3"))
! 243: return(MDOC_xpg4_3);
! 244: else if (xstrcmp(argv, "xbd5"))
! 245: return(MDOC_xbd5);
! 246: else if (xstrcmp(argv, "xcu5"))
! 247: return(MDOC_xcu5);
! 248: else if (xstrcmp(argv, "xsh5"))
! 249: return(MDOC_xsh5);
! 250: else if (xstrcmp(argv, "xns5"))
! 251: return(MDOC_xns5);
! 252: else if (xstrcmp(argv, "xns5.2d2.0"))
! 253: return(MDOC_xns5_2d2_0);
! 254: else if (xstrcmp(argv, "xcurses4.2"))
! 255: return(MDOC_xcurses4_2);
! 256: else if (xstrcmp(argv, "susv2"))
! 257: return(MDOC_susv2);
! 258: else if (xstrcmp(argv, "susv3"))
! 259: return(MDOC_susv3);
! 260: else if (xstrcmp(argv, "svid4"))
! 261: return(MDOC_svid4);
! 262: break;
1.1 kristaps 263:
264: default:
265: abort();
266: /* NOTREACHED */
267: }
268:
269: return(MDOC_ARG_MAX);
270: }
271:
272:
1.2 kristaps 273: static int
274: postparse(struct mdoc *mdoc, int tok, const struct mdoc_arg *v, int pos)
275: {
276:
277: switch (v->arg) {
278: case (MDOC_Offset):
279: assert(v->value);
280: assert(v->value[0]);
281: if (xstrcmp(v->value[0], "left"))
282: break;
283: if (xstrcmp(v->value[0], "right"))
284: break;
285: if (xstrcmp(v->value[0], "center"))
286: break;
287: if (xstrcmp(v->value[0], "indent"))
288: break;
289: if (xstrcmp(v->value[0], "indent-two"))
290: break;
291: return(mdoc_err(mdoc, tok, pos, ERR_SYNTAX_ARGBAD));
292: default:
293: break;
294: }
295:
296: return(1);
297: }
298:
299:
300: static int
301: parse(struct mdoc *mdoc, int tok,
1.1 kristaps 302: struct mdoc_arg *v, int *pos, char *buf)
303: {
304: char *p;
305: int c, ppos, i;
306:
307: ppos = *pos;
308:
1.2 kristaps 309: switch (v->arg) {
1.1 kristaps 310: case(MDOC_Compact):
311: /* FALLTHROUGH */
312: case(MDOC_Ragged):
313: /* FALLTHROUGH */
314: case(MDOC_Unfilled):
315: /* FALLTHROUGH */
316: case(MDOC_Literal):
317: /* FALLTHROUGH */
318: case(MDOC_File):
319: /* FALLTHROUGH */
320: case(MDOC_Bullet):
321: /* FALLTHROUGH */
322: case(MDOC_Dash):
323: /* FALLTHROUGH */
324: case(MDOC_Hyphen):
325: /* FALLTHROUGH */
326: case(MDOC_Item):
327: /* FALLTHROUGH */
328: case(MDOC_Enum):
329: /* FALLTHROUGH */
330: case(MDOC_Tag):
331: /* FALLTHROUGH */
332: case(MDOC_Diag):
333: /* FALLTHROUGH */
334: case(MDOC_Hang):
335: /* FALLTHROUGH */
336: case(MDOC_Ohang):
337: /* FALLTHROUGH */
338: case(MDOC_Inset):
339: v->sz = 0;
340: v->value = NULL;
341: break;
342:
1.3 kristaps 343: case(MDOC_Std):
344: /* FALLTHROUGH */
1.1 kristaps 345: case(MDOC_Width):
346: /* FALLTHROUGH */
347: case(MDOC_Offset):
348: /*
349: * This has a single value for an argument.
350: */
1.2 kristaps 351: c = mdoc_args(mdoc, tok, pos, buf, ARGS_QUOTED, &p);
352: if (ARGS_ERROR == c)
1.1 kristaps 353: return(0);
1.2 kristaps 354: else if (ARGS_EOLN == c)
1.1 kristaps 355: return(mdoc_err(mdoc, tok, ppos, ERR_SYNTAX_ARGVAL));
356:
357: v->sz = 1;
358: v->value = xcalloc(1, sizeof(char *));
359: v->value[0] = p;
360: break;
361:
362: case(MDOC_Column):
363: /*
364: * This has several value for a single argument. We
365: * pre-allocate a pointer array and don't let it exceed
366: * this size.
367: */
368: v->sz = 0;
369: v->value = xcalloc(MDOC_LINEARG_MAX, sizeof(char *));
370: for (i = 0; i < MDOC_LINEARG_MAX; i++) {
1.2 kristaps 371: c = mdoc_args(mdoc, tok, pos, buf, ARGS_QUOTED, &p);
372: if (ARGS_ERROR == c) {
1.1 kristaps 373: free(v->value);
374: return(0);
1.2 kristaps 375: } else if (ARGS_EOLN == c)
1.1 kristaps 376: break;
377: v->value[i] = p;
378: }
379: if (0 == i) {
380: free(v->value);
381: return(mdoc_err(mdoc, tok, ppos, ERR_SYNTAX_ARGVAL));
382: } else if (MDOC_LINEARG_MAX == i)
383: return(mdoc_err(mdoc, tok, ppos, ERR_SYNTAX_ARGMANY));
384:
385: v->sz = i;
386: break;
387: default:
388: abort();
389: /* NOTREACHED */
390: }
391:
392: return(1);
393: }
394:
395:
1.2 kristaps 396: int
397: mdoc_argv(struct mdoc *mdoc, int tok,
398: struct mdoc_arg *v, int *pos, char *buf)
399: {
400: int i, ppos;
401: char *argv;
402:
403: (void)memset(v, 0, sizeof(struct mdoc_arg));
404:
405: if (0 == buf[*pos])
1.5 ! kristaps 406: return(ARGV_EOLN);
1.2 kristaps 407:
408: assert( ! isspace(buf[*pos]));
409:
1.5 ! kristaps 410: if ('-' != buf[*pos])
! 411: return(ARGV_WORD);
1.2 kristaps 412:
413: i = *pos;
414: argv = &buf[++(*pos)];
415:
416: while (buf[*pos] && ! isspace(buf[*pos]))
417: (*pos)++;
418:
419: if (buf[*pos])
420: buf[(*pos)++] = 0;
421:
422: if (MDOC_ARG_MAX == (v->arg = lookup(tok, argv))) {
423: (void)mdoc_err(mdoc, tok, i, ERR_SYNTAX_ARG);
1.5 ! kristaps 424: return(ARGV_ERROR);
1.2 kristaps 425: }
426:
427: while (buf[*pos] && isspace(buf[*pos]))
428: (*pos)++;
429:
430: /* FIXME: whitespace if no value. */
431:
432: ppos = *pos;
433: if ( ! parse(mdoc, tok, v, pos, buf))
1.5 ! kristaps 434: return(ARGV_ERROR);
1.2 kristaps 435: if ( ! postparse(mdoc, tok, v, ppos))
1.5 ! kristaps 436: return(ARGV_ERROR);
1.2 kristaps 437:
1.5 ! kristaps 438: return(ARGV_ARG);
1.2 kristaps 439: }
440:
441:
1.1 kristaps 442: void
443: mdoc_argv_free(int sz, struct mdoc_arg *arg)
444: {
445: int i;
446:
447: for (i = 0; i < sz; i++) {
448: if (0 == arg[i].sz) {
449: assert(NULL == arg[i].value);
450: continue;
451: }
452: assert(arg[i].value);
453: free(arg[i].value);
454: }
455: }
1.2 kristaps 456: