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1.4 ! kristaps 1: /* $Id: argv.c,v 1.3 2008/12/30 13:43:53 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 *);
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;
1.1 kristaps 186:
187: default:
188: abort();
189: /* NOTREACHED */
190: }
191:
192: return(MDOC_ARG_MAX);
193: }
194:
195:
1.2 kristaps 196: static int
197: postparse(struct mdoc *mdoc, int tok, const struct mdoc_arg *v, int pos)
198: {
199:
200: switch (v->arg) {
201: case (MDOC_Offset):
202: assert(v->value);
203: assert(v->value[0]);
204: if (xstrcmp(v->value[0], "left"))
205: break;
206: if (xstrcmp(v->value[0], "right"))
207: break;
208: if (xstrcmp(v->value[0], "center"))
209: break;
210: if (xstrcmp(v->value[0], "indent"))
211: break;
212: if (xstrcmp(v->value[0], "indent-two"))
213: break;
214: return(mdoc_err(mdoc, tok, pos, ERR_SYNTAX_ARGBAD));
215: default:
216: break;
217: }
218:
219: return(1);
220: }
221:
222:
223: static int
224: parse(struct mdoc *mdoc, int tok,
1.1 kristaps 225: struct mdoc_arg *v, int *pos, char *buf)
226: {
227: char *p;
228: int c, ppos, i;
229:
230: ppos = *pos;
231:
1.2 kristaps 232: switch (v->arg) {
1.1 kristaps 233: case(MDOC_Compact):
234: /* FALLTHROUGH */
235: case(MDOC_Ragged):
236: /* FALLTHROUGH */
237: case(MDOC_Unfilled):
238: /* FALLTHROUGH */
239: case(MDOC_Literal):
240: /* FALLTHROUGH */
241: case(MDOC_File):
242: /* FALLTHROUGH */
243: case(MDOC_Bullet):
244: /* FALLTHROUGH */
245: case(MDOC_Dash):
246: /* FALLTHROUGH */
247: case(MDOC_Hyphen):
248: /* FALLTHROUGH */
249: case(MDOC_Item):
250: /* FALLTHROUGH */
251: case(MDOC_Enum):
252: /* FALLTHROUGH */
253: case(MDOC_Tag):
254: /* FALLTHROUGH */
255: case(MDOC_Diag):
256: /* FALLTHROUGH */
257: case(MDOC_Hang):
258: /* FALLTHROUGH */
259: case(MDOC_Ohang):
260: /* FALLTHROUGH */
261: case(MDOC_Inset):
262: v->sz = 0;
263: v->value = NULL;
264: break;
265:
1.3 kristaps 266: case(MDOC_Std):
267: /* FALLTHROUGH */
1.1 kristaps 268: case(MDOC_Width):
269: /* FALLTHROUGH */
270: case(MDOC_Offset):
271: /*
272: * This has a single value for an argument.
273: */
1.2 kristaps 274: c = mdoc_args(mdoc, tok, pos, buf, ARGS_QUOTED, &p);
275: if (ARGS_ERROR == c)
1.1 kristaps 276: return(0);
1.2 kristaps 277: else if (ARGS_EOLN == c)
1.1 kristaps 278: return(mdoc_err(mdoc, tok, ppos, ERR_SYNTAX_ARGVAL));
279:
280: v->sz = 1;
281: v->value = xcalloc(1, sizeof(char *));
282: v->value[0] = p;
283: break;
284:
285: case(MDOC_Column):
286: /*
287: * This has several value for a single argument. We
288: * pre-allocate a pointer array and don't let it exceed
289: * this size.
290: */
291: v->sz = 0;
292: v->value = xcalloc(MDOC_LINEARG_MAX, sizeof(char *));
293: for (i = 0; i < MDOC_LINEARG_MAX; i++) {
1.2 kristaps 294: c = mdoc_args(mdoc, tok, pos, buf, ARGS_QUOTED, &p);
295: if (ARGS_ERROR == c) {
1.1 kristaps 296: free(v->value);
297: return(0);
1.2 kristaps 298: } else if (ARGS_EOLN == c)
1.1 kristaps 299: break;
300: v->value[i] = p;
301: }
302: if (0 == i) {
303: free(v->value);
304: return(mdoc_err(mdoc, tok, ppos, ERR_SYNTAX_ARGVAL));
305: } else if (MDOC_LINEARG_MAX == i)
306: return(mdoc_err(mdoc, tok, ppos, ERR_SYNTAX_ARGMANY));
307:
308: v->sz = i;
309: break;
310: default:
311: abort();
312: /* NOTREACHED */
313: }
314:
315: return(1);
316: }
317:
318:
1.2 kristaps 319: int
320: mdoc_argv(struct mdoc *mdoc, int tok,
321: struct mdoc_arg *v, int *pos, char *buf)
322: {
323: int i, ppos;
324: char *argv;
325:
326: (void)memset(v, 0, sizeof(struct mdoc_arg));
327:
328: if (0 == buf[*pos])
329: return(0);
330:
331: assert( ! isspace(buf[*pos]));
332:
333: if ('-' != buf[*pos]) {
334: (void)mdoc_err(mdoc, tok, *pos, ERR_SYNTAX_ARGFORM);
335: return(-1);
336: }
337:
338: i = *pos;
339: argv = &buf[++(*pos)];
340:
341: while (buf[*pos] && ! isspace(buf[*pos]))
342: (*pos)++;
343:
344: if (buf[*pos])
345: buf[(*pos)++] = 0;
346:
347: if (MDOC_ARG_MAX == (v->arg = lookup(tok, argv))) {
348: (void)mdoc_err(mdoc, tok, i, ERR_SYNTAX_ARG);
349: return(-1);
350: }
351:
352: while (buf[*pos] && isspace(buf[*pos]))
353: (*pos)++;
354:
355: /* FIXME: whitespace if no value. */
356:
357: ppos = *pos;
358: if ( ! parse(mdoc, tok, v, pos, buf))
359: return(-1);
360: if ( ! postparse(mdoc, tok, v, ppos))
361: return(-1);
362:
363: return(1);
364: }
365:
366:
1.1 kristaps 367: void
368: mdoc_argv_free(int sz, struct mdoc_arg *arg)
369: {
370: int i;
371:
372: for (i = 0; i < sz; i++) {
373: if (0 == arg[i].sz) {
374: assert(NULL == arg[i].value);
375: continue;
376: }
377: assert(arg[i].value);
378: free(arg[i].value);
379: }
380: }
1.2 kristaps 381: