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1.6 ! kristaps 1: /* $Id: argv.c,v 1.5 2009/01/01 20:40:16 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) {
1.6 ! kristaps 136: case (MDOC_Bf):
! 137: if (xstrcmp(argv, "emphasis"))
! 138: return(MDOC_Emphasis);
! 139: else if (xstrcmp(argv, "literal"))
! 140: return(MDOC_Literal);
! 141: else if (xstrcmp(argv, "symbolic"))
! 142: return(MDOC_Symbolic);
! 143: break;
! 144:
! 145: case (MDOC_An):
! 146: if (xstrcmp(argv, "split"))
! 147: return(MDOC_Split);
! 148: else if (xstrcmp(argv, "nosplit"))
! 149: return(MDOC_Nosplit);
! 150: break;
! 151:
1.2 kristaps 152: case (MDOC_Bd):
1.1 kristaps 153: if (xstrcmp(argv, "ragged"))
154: return(MDOC_Ragged);
155: else if (xstrcmp(argv, "unfilled"))
156: return(MDOC_Unfilled);
157: else if (xstrcmp(argv, "literal"))
158: return(MDOC_Literal);
159: else if (xstrcmp(argv, "file"))
160: return(MDOC_File);
161: else if (xstrcmp(argv, "offset"))
162: return(MDOC_Offset);
1.2 kristaps 163: break;
164:
165: case (MDOC_Bl):
166: if (xstrcmp(argv, "bullet"))
1.1 kristaps 167: return(MDOC_Bullet);
168: else if (xstrcmp(argv, "dash"))
169: return(MDOC_Dash);
170: else if (xstrcmp(argv, "hyphen"))
171: return(MDOC_Hyphen);
172: else if (xstrcmp(argv, "item"))
173: return(MDOC_Item);
174: else if (xstrcmp(argv, "enum"))
175: return(MDOC_Enum);
176: else if (xstrcmp(argv, "tag"))
177: return(MDOC_Tag);
178: else if (xstrcmp(argv, "diag"))
179: return(MDOC_Diag);
180: else if (xstrcmp(argv, "hang"))
181: return(MDOC_Hang);
182: else if (xstrcmp(argv, "ohang"))
183: return(MDOC_Ohang);
184: else if (xstrcmp(argv, "inset"))
185: return(MDOC_Inset);
186: else if (xstrcmp(argv, "column"))
187: return(MDOC_Column);
188: else if (xstrcmp(argv, "width"))
189: return(MDOC_Width);
1.2 kristaps 190: else if (xstrcmp(argv, "offset"))
191: return(MDOC_Offset);
1.1 kristaps 192: else if (xstrcmp(argv, "compact"))
193: return(MDOC_Compact);
1.2 kristaps 194: break;
1.3 kristaps 195:
196: case (MDOC_Rv):
197: /* FALLTHROUGH */
198: case (MDOC_Ex):
199: if (xstrcmp(argv, "std"))
200: return(MDOC_Std);
201: break;
1.5 kristaps 202:
203: case (MDOC_St):
204: if (xstrcmp(argv, "p1003.1-88"))
205: return(MDOC_p1003_1_88);
206: else if (xstrcmp(argv, "p1003.1-90"))
207: return(MDOC_p1003_1_90);
208: else if (xstrcmp(argv, "p1003.1-96"))
209: return(MDOC_p1003_1_96);
210: else if (xstrcmp(argv, "p1003.1-2001"))
211: return(MDOC_p1003_1_2001);
212: else if (xstrcmp(argv, "p1003.1-2004"))
213: return(MDOC_p1003_1_2004);
214: else if (xstrcmp(argv, "p1003.1"))
215: return(MDOC_p1003_1);
216: else if (xstrcmp(argv, "p1003.1b"))
217: return(MDOC_p1003_1b);
218: else if (xstrcmp(argv, "p1003.1b-93"))
219: return(MDOC_p1003_1b_93);
220: else if (xstrcmp(argv, "p1003.1c-95"))
221: return(MDOC_p1003_1c_95);
222: else if (xstrcmp(argv, "p1003.1g-2000"))
223: return(MDOC_p1003_1g_2000);
224: else if (xstrcmp(argv, "p1003.2-92"))
225: return(MDOC_p1003_2_92);
226: else if (xstrcmp(argv, "p1003.2-95"))
227: return(MDOC_p1387_2_95);
228: else if (xstrcmp(argv, "p1003.2"))
229: return(MDOC_p1003_2);
230: else if (xstrcmp(argv, "p1387.2-95"))
231: return(MDOC_p1387_2);
232: else if (xstrcmp(argv, "isoC-90"))
233: return(MDOC_isoC_90);
234: else if (xstrcmp(argv, "isoC-amd1"))
235: return(MDOC_isoC_amd1);
236: else if (xstrcmp(argv, "isoC-tcor1"))
237: return(MDOC_isoC_tcor1);
238: else if (xstrcmp(argv, "isoC-tcor2"))
239: return(MDOC_isoC_tcor2);
240: else if (xstrcmp(argv, "isoC-99"))
241: return(MDOC_isoC_99);
242: else if (xstrcmp(argv, "ansiC"))
243: return(MDOC_ansiC);
244: else if (xstrcmp(argv, "ansiC-89"))
245: return(MDOC_ansiC_89);
246: else if (xstrcmp(argv, "ansiC-99"))
247: return(MDOC_ansiC_99);
248: else if (xstrcmp(argv, "ieee754"))
249: return(MDOC_ieee754);
250: else if (xstrcmp(argv, "iso8802-3"))
251: return(MDOC_iso8802_3);
252: else if (xstrcmp(argv, "xpg3"))
253: return(MDOC_xpg3);
254: else if (xstrcmp(argv, "xpg4"))
255: return(MDOC_xpg4);
256: else if (xstrcmp(argv, "xpg4.2"))
257: return(MDOC_xpg4_2);
258: else if (xstrcmp(argv, "xpg4.3"))
259: return(MDOC_xpg4_3);
260: else if (xstrcmp(argv, "xbd5"))
261: return(MDOC_xbd5);
262: else if (xstrcmp(argv, "xcu5"))
263: return(MDOC_xcu5);
264: else if (xstrcmp(argv, "xsh5"))
265: return(MDOC_xsh5);
266: else if (xstrcmp(argv, "xns5"))
267: return(MDOC_xns5);
268: else if (xstrcmp(argv, "xns5.2d2.0"))
269: return(MDOC_xns5_2d2_0);
270: else if (xstrcmp(argv, "xcurses4.2"))
271: return(MDOC_xcurses4_2);
272: else if (xstrcmp(argv, "susv2"))
273: return(MDOC_susv2);
274: else if (xstrcmp(argv, "susv3"))
275: return(MDOC_susv3);
276: else if (xstrcmp(argv, "svid4"))
277: return(MDOC_svid4);
278: break;
1.1 kristaps 279:
280: default:
281: abort();
282: /* NOTREACHED */
283: }
284:
285: return(MDOC_ARG_MAX);
286: }
287:
288:
1.2 kristaps 289: static int
290: postparse(struct mdoc *mdoc, int tok, const struct mdoc_arg *v, int pos)
291: {
292:
293: switch (v->arg) {
294: case (MDOC_Offset):
295: assert(v->value);
296: assert(v->value[0]);
297: if (xstrcmp(v->value[0], "left"))
298: break;
299: if (xstrcmp(v->value[0], "right"))
300: break;
301: if (xstrcmp(v->value[0], "center"))
302: break;
303: if (xstrcmp(v->value[0], "indent"))
304: break;
305: if (xstrcmp(v->value[0], "indent-two"))
306: break;
307: return(mdoc_err(mdoc, tok, pos, ERR_SYNTAX_ARGBAD));
308: default:
309: break;
310: }
311:
312: return(1);
313: }
314:
315:
316: static int
317: parse(struct mdoc *mdoc, int tok,
1.1 kristaps 318: struct mdoc_arg *v, int *pos, char *buf)
319: {
320: char *p;
321: int c, ppos, i;
322:
323: ppos = *pos;
324:
1.2 kristaps 325: switch (v->arg) {
1.3 kristaps 326: case(MDOC_Std):
327: /* FALLTHROUGH */
1.1 kristaps 328: case(MDOC_Width):
329: /* FALLTHROUGH */
330: case(MDOC_Offset):
331: /*
332: * This has a single value for an argument.
333: */
1.2 kristaps 334: c = mdoc_args(mdoc, tok, pos, buf, ARGS_QUOTED, &p);
335: if (ARGS_ERROR == c)
1.1 kristaps 336: return(0);
1.2 kristaps 337: else if (ARGS_EOLN == c)
1.1 kristaps 338: return(mdoc_err(mdoc, tok, ppos, ERR_SYNTAX_ARGVAL));
339:
340: v->sz = 1;
341: v->value = xcalloc(1, sizeof(char *));
342: v->value[0] = p;
343: break;
344:
345: case(MDOC_Column):
346: /*
347: * This has several value for a single argument. We
348: * pre-allocate a pointer array and don't let it exceed
349: * this size.
350: */
351: v->sz = 0;
352: v->value = xcalloc(MDOC_LINEARG_MAX, sizeof(char *));
353: for (i = 0; i < MDOC_LINEARG_MAX; i++) {
1.2 kristaps 354: c = mdoc_args(mdoc, tok, pos, buf, ARGS_QUOTED, &p);
355: if (ARGS_ERROR == c) {
1.1 kristaps 356: free(v->value);
357: return(0);
1.2 kristaps 358: } else if (ARGS_EOLN == c)
1.1 kristaps 359: break;
360: v->value[i] = p;
361: }
362: if (0 == i) {
363: free(v->value);
364: return(mdoc_err(mdoc, tok, ppos, ERR_SYNTAX_ARGVAL));
365: } else if (MDOC_LINEARG_MAX == i)
366: return(mdoc_err(mdoc, tok, ppos, ERR_SYNTAX_ARGMANY));
367:
368: v->sz = i;
369: break;
1.6 ! kristaps 370:
1.1 kristaps 371: default:
1.6 ! kristaps 372: v->sz = 0;
! 373: v->value = NULL;
! 374: break;
1.1 kristaps 375: }
376:
377: return(1);
378: }
379:
380:
1.2 kristaps 381: int
382: mdoc_argv(struct mdoc *mdoc, int tok,
383: struct mdoc_arg *v, int *pos, char *buf)
384: {
385: int i, ppos;
386: char *argv;
387:
388: (void)memset(v, 0, sizeof(struct mdoc_arg));
389:
390: if (0 == buf[*pos])
1.5 kristaps 391: return(ARGV_EOLN);
1.2 kristaps 392:
393: assert( ! isspace(buf[*pos]));
394:
1.5 kristaps 395: if ('-' != buf[*pos])
396: return(ARGV_WORD);
1.2 kristaps 397:
398: i = *pos;
399: argv = &buf[++(*pos)];
400:
401: while (buf[*pos] && ! isspace(buf[*pos]))
402: (*pos)++;
403:
404: if (buf[*pos])
405: buf[(*pos)++] = 0;
406:
407: if (MDOC_ARG_MAX == (v->arg = lookup(tok, argv))) {
408: (void)mdoc_err(mdoc, tok, i, ERR_SYNTAX_ARG);
1.5 kristaps 409: return(ARGV_ERROR);
1.2 kristaps 410: }
411:
412: while (buf[*pos] && isspace(buf[*pos]))
413: (*pos)++;
414:
415: /* FIXME: whitespace if no value. */
416:
417: ppos = *pos;
418: if ( ! parse(mdoc, tok, v, pos, buf))
1.5 kristaps 419: return(ARGV_ERROR);
1.2 kristaps 420: if ( ! postparse(mdoc, tok, v, ppos))
1.5 kristaps 421: return(ARGV_ERROR);
1.2 kristaps 422:
1.5 kristaps 423: return(ARGV_ARG);
1.2 kristaps 424: }
425:
426:
1.1 kristaps 427: void
428: mdoc_argv_free(int sz, struct mdoc_arg *arg)
429: {
430: int i;
431:
432: for (i = 0; i < sz; i++) {
433: if (0 == arg[i].sz) {
434: assert(NULL == arg[i].value);
435: continue;
436: }
437: assert(arg[i].value);
438: free(arg[i].value);
439: }
440: }
1.2 kristaps 441: