Annotation of mandoc/man_macro.c, Revision 1.6
1.6 ! kristaps 1: /* $Id: man_macro.c,v 1.5 2009/03/25 15:17:49 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>
1.3 kristaps 21: #include <err.h> /* XXX */
1.1 kristaps 22: #include <stdlib.h>
23: #include <stdio.h>
24: #include <string.h>
25:
26: #include "libman.h"
27:
1.3 kristaps 28: static int man_args(struct man *, int,
29: int *, char *, char **);
1.1 kristaps 30:
31:
1.3 kristaps 32: int
33: man_macro(struct man *man, int tok, int line,
34: int ppos, int *pos, char *buf)
1.1 kristaps 35: {
1.3 kristaps 36: int w, la;
37: char *p;
38: struct man_node *n;
1.1 kristaps 39:
1.3 kristaps 40: if ( ! man_elem_alloc(man, line, ppos, tok))
1.1 kristaps 41: return(0);
1.3 kristaps 42: n = man->last;
43: man->next = MAN_NEXT_CHILD;
1.1 kristaps 44:
45: for (;;) {
46: la = *pos;
1.3 kristaps 47: w = man_args(man, line, pos, buf, &p);
1.1 kristaps 48:
1.3 kristaps 49: if (-1 == w)
1.1 kristaps 50: return(0);
1.3 kristaps 51: if (0 == w)
1.1 kristaps 52: break;
53:
1.3 kristaps 54: if ( ! man_word_alloc(man, line, la, p))
55: return(0);
56: man->next = MAN_NEXT_SIBLING;
57: }
1.1 kristaps 58:
1.5 kristaps 59: for ( ; man->last && man->last != n;
1.6 ! kristaps 60: man->last = man->last->parent) {
1.5 kristaps 61: if ( ! man_valid_post(man))
62: return(0);
1.6 ! kristaps 63: if ( ! man_action_post(man))
! 64: return(0);
! 65: }
1.1 kristaps 66:
1.5 kristaps 67: assert(man->last);
1.6 ! kristaps 68:
1.5 kristaps 69: if ( ! man_valid_post(man))
70: return(0);
1.6 ! kristaps 71: if ( ! man_action_post(man))
! 72: return(0);
! 73:
1.3 kristaps 74: man->next = MAN_NEXT_SIBLING;
1.1 kristaps 75:
76: return(1);
77: }
78:
1.3 kristaps 79:
1.4 kristaps 80: int
81: man_macroend(struct man *m)
82: {
83:
1.6 ! kristaps 84: for ( ; m->last && m->last != m->first;
! 85: m->last = m->last->parent) {
! 86: if ( ! man_valid_post(m))
! 87: return(0);
! 88: if ( ! man_action_post(m))
! 89: return(0);
! 90: }
! 91:
! 92: if ( ! man_valid_post(m))
! 93: return(0);
! 94: if ( ! man_action_post(m))
! 95: return(0);
! 96:
1.4 kristaps 97: return(1);
98: }
99:
100:
1.3 kristaps 101: /* ARGSUSED */
1.4 kristaps 102: static int
1.3 kristaps 103: man_args(struct man *man, int line,
104: int *pos, char *buf, char **v)
105: {
106:
107: if (0 == buf[*pos])
108: return(0);
109:
110: /* First parse non-quoted strings. */
111:
112: if ('\"' != buf[*pos]) {
113: *v = &buf[*pos];
114:
115: while (buf[*pos]) {
116: if (' ' == buf[*pos])
117: if ('\\' != buf[*pos - 1])
118: break;
119: (*pos)++;
120: }
121:
122: if (0 == buf[*pos])
123: return(1);
124:
125: buf[(*pos)++] = 0;
126:
127: if (0 == buf[*pos])
128: return(1);
129:
130: while (buf[*pos] && ' ' == buf[*pos])
131: (*pos)++;
132:
133: if (buf[*pos])
134: return(1);
135:
136: warnx("tail whitespace");
137: return(-1);
138: }
139:
140: /*
141: * If we're a quoted string (and quoted strings are allowed),
142: * then parse ahead to the next quote. If none's found, it's an
143: * error. After, parse to the next word.
144: */
145:
146: *v = &buf[++(*pos)];
147:
148: while (buf[*pos] && '\"' != buf[*pos])
149: (*pos)++;
150:
151: if (0 == buf[*pos]) {
152: warnx("unterminated quotation");
153: return(-1);
154: }
155:
156: buf[(*pos)++] = 0;
157: if (0 == buf[*pos])
158: return(1);
159:
160: while (buf[*pos] && ' ' == buf[*pos])
161: (*pos)++;
162:
163: if (buf[*pos])
164: return(1);
165:
166: warnx("tail whitespace");
167: return(-1);
168: }
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