Annotation of mandoc/man.c, Revision 1.2
1.2 ! kristaps 1: /* $Id: man.c,v 1.1 2009/03/23 14:22:11 kristaps Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
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 <stdarg.h>
23: #include <stdlib.h>
24: #include <stdio.h>
25: #include <string.h>
26:
27: #include "libman.h"
28:
29: const char *const __man_macronames[MAN_MAX] = {
30: "\\\"", "TH", "SH", "SS",
31: "TP", "LP", "PP", "P",
32: "IP", "HP", "SM", "SB",
33: "BI", "IB", "BR", "RB",
1.2 ! kristaps 34: "R", "B", "I", "IR"
1.1 kristaps 35: };
36:
37: const char * const *man_macronames = __man_macronames;
38:
39: static struct man_node *man_node_alloc(int, int, enum man_type);
40: static int man_node_append(struct man *,
41: struct man_node *);
42: static int man_ptext(struct man *, int, char *);
43: static int man_pmacro(struct man *, int, char *);
1.2 ! kristaps 44: static void man_free1(struct man *);
! 45: static void man_alloc1(struct man *);
1.1 kristaps 46:
47:
48: const struct man_node *
1.2 ! kristaps 49: man_node(const struct man *m)
1.1 kristaps 50: {
51:
1.2 ! kristaps 52: return(MAN_HALT & m->flags ? NULL : m->first);
1.1 kristaps 53: }
54:
55:
56: const struct man_meta *
1.2 ! kristaps 57: man_meta(const struct man *m)
1.1 kristaps 58: {
59:
1.2 ! kristaps 60: return(MAN_HALT & m->flags ? NULL : &m->meta);
1.1 kristaps 61: }
62:
63:
64: void
65: man_reset(struct man *man)
66: {
67:
1.2 ! kristaps 68: man_free1(man);
! 69: man_alloc1(man);
1.1 kristaps 70: }
71:
72:
73: void
74: man_free(struct man *man)
75: {
76:
1.2 ! kristaps 77: man_free1(man);
! 78:
1.1 kristaps 79: if (man->htab)
80: man_hash_free(man->htab);
81: free(man);
82: }
83:
84:
85: struct man *
86: man_alloc(void)
87: {
88: struct man *p;
89:
1.2 ! kristaps 90: p = calloc(1, sizeof(struct man));
! 91: if (NULL == p)
! 92: err(1, "calloc");
! 93:
! 94: man_alloc1(p);
1.1 kristaps 95:
96: p->htab = man_hash_alloc();
97: return(p);
98: }
99:
100:
101: int
102: man_endparse(struct man *m)
103: {
104:
1.2 ! kristaps 105: /* FIXME. */
1.1 kristaps 106: return(1);
107: }
108:
109:
110: int
111: man_parseln(struct man *m, int ln, char *buf)
112: {
113:
114: return('.' == *buf ?
115: man_pmacro(m, ln, buf) :
116: man_ptext(m, ln, buf));
117: }
118:
119:
1.2 ! kristaps 120: static void
! 121: man_free1(struct man *man)
! 122: {
! 123:
! 124: if (man->first)
! 125: man_node_freelist(man->first);
! 126: if (man->meta.title)
! 127: free(man->meta.title);
! 128: if (man->meta.os)
! 129: free(man->meta.os);
! 130: if (man->meta.vol)
! 131: free(man->meta.vol);
! 132: }
! 133:
! 134:
! 135: static void
! 136: man_alloc1(struct man *m)
! 137: {
! 138:
! 139: bzero(&m->meta, sizeof(struct man_meta));
! 140: m->flags = 0;
! 141: m->last = calloc(1, sizeof(struct man_node));
! 142: if (NULL == m->last)
! 143: err(1, "calloc");
! 144: m->first = m->last;
! 145: m->last->type = MAN_ROOT;
! 146: m->next = MAN_NEXT_CHILD;
! 147: }
! 148:
! 149:
1.1 kristaps 150: static int
151: man_node_append(struct man *man, struct man_node *p)
152: {
153:
154: assert(man->last);
155: assert(man->first);
156: assert(MAN_ROOT != p->type);
157:
158: switch (man->next) {
159: case (MAN_NEXT_SIBLING):
160: man->last->next = p;
161: p->prev = man->last;
162: p->parent = man->last->parent;
163: break;
164: case (MAN_NEXT_CHILD):
165: man->last->child = p;
166: p->parent = man->last;
167: break;
168: default:
169: abort();
170: /* NOTREACHED */
171: }
172:
173: #if 0
174: if ( ! man_valid_pre(man, p))
175: return(0);
176: if ( ! man_action_pre(man, p))
177: return(0);
178: #endif
179:
1.2 ! kristaps 180: man->last = p;
! 181:
1.1 kristaps 182: switch (p->type) {
1.2 ! kristaps 183: case (MAN_TEXT):
! 184: #if 0
! 185: if ( ! man_valid_post(man))
! 186: return(0);
! 187: if ( ! man_action_post(man))
! 188: return(0);
! 189: #endif
1.1 kristaps 190: break;
191: default:
192: break;
193: }
194:
195: return(1);
196: }
197:
198:
199: static struct man_node *
200: man_node_alloc(int line, int pos, enum man_type type)
201: {
202: struct man_node *p;
203:
204: if (NULL == (p = calloc(1, sizeof(struct man_node))))
205: err(1, "malloc");
206: p->line = line;
207: p->pos = pos;
208: p->type = type;
209:
210: return(p);
211: }
212:
213:
214: int
215: man_elem_alloc(struct man *man, int line, int pos, int tok)
216: {
217: struct man_node *p;
218:
219: p = man_node_alloc(line, pos, MAN_ELEM);
220: p->tok = tok;
221:
222: return(man_node_append(man, p));
223: }
224:
225:
226: int
227: man_word_alloc(struct man *man,
228: int line, int pos, const char *word)
229: {
230: struct man_node *p;
231:
232: p = man_node_alloc(line, pos, MAN_TEXT);
233: if (NULL == (p->string = strdup(word)))
234: err(1, "strdup");
235:
236: return(man_node_append(man, p));
237: }
238:
239:
240: void
241: man_node_free(struct man_node *p)
242: {
243:
244: if (p->string)
245: free(p->string);
246: free(p);
247: }
248:
249:
250: void
251: man_node_freelist(struct man_node *p)
252: {
253:
254: if (p->child)
255: man_node_freelist(p->child);
256: if (p->next)
257: man_node_freelist(p->next);
258:
259: man_node_free(p);
260: }
261:
262:
263: static int
264: man_ptext(struct man *m, int line, char *buf)
265: {
266:
267: if ( ! man_word_alloc(m, line, 0, buf))
268: return(0);
269: m->next = MAN_NEXT_SIBLING;
270: return(1);
271: }
272:
273:
274: int
275: man_pmacro(struct man *m, int ln, char *buf)
276: {
277: int i, c;
278: char mac[5];
279:
280: /* Comments and empties are quickly ignored. */
281:
282: if (0 == buf[1])
283: return(1);
284:
285: if (' ' == buf[1]) {
286: i = 2;
287: while (buf[i] && ' ' == buf[i])
288: i++;
289: if (0 == buf[i])
290: return(1);
291: warnx("invalid syntax");
292: return(0);
293: }
294:
295: if (buf[1] && '\\' == buf[1])
296: if (buf[2] && '\"' == buf[2])
297: return(1);
298:
299: /* Copy the first word into a nil-terminated buffer. */
300:
301: for (i = 1; i < 5; i++) {
302: if (0 == (mac[i - 1] = buf[i]))
303: break;
304: else if (' ' == buf[i])
305: break;
306: }
307:
308: mac[i - 1] = 0;
309:
310: if (i == 5 || i <= 1) {
311: warnx("unknown macro: %s", mac);
312: goto err;
313: }
314:
315: if (MAN_MAX == (c = man_hash_find(m->htab, mac))) {
316: warnx("unknown macro: %s", mac);
317: goto err;
318: }
319:
320: /* The macro is sane. Jump to the next word. */
321:
322: while (buf[i] && ' ' == buf[i])
323: i++;
324:
325: /* Begin recursive parse sequence. */
326:
1.2 ! kristaps 327: if ( ! man_macro(m, c, ln, 1, &i, buf))
1.1 kristaps 328: goto err;
329:
330: return(1);
331:
332: err: /* Error out. */
333:
1.2 ! kristaps 334: m->flags |= MAN_HALT;
1.1 kristaps 335: return(0);
336: }
CVSweb