Annotation of mandoc/man_macro.c, Revision 1.5
1.5 ! kristaps 1: /* $Id: man_macro.c,v 1.4 2009/03/23 15:41:09 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;
! 60: man->last = man->last->parent)
! 61: if ( ! man_valid_post(man))
! 62: return(0);
1.1 kristaps 63:
1.5 ! kristaps 64: assert(man->last);
! 65: if ( ! man_valid_post(man))
! 66: return(0);
1.3 kristaps 67: man->next = MAN_NEXT_SIBLING;
1.1 kristaps 68:
69: return(1);
70: }
71:
1.3 kristaps 72:
1.4 kristaps 73: int
74: man_macroend(struct man *m)
75: {
76:
77: /* TODO: validate & actions. */
78: return(1);
79: }
80:
81:
1.3 kristaps 82: /* ARGSUSED */
1.4 kristaps 83: static int
1.3 kristaps 84: man_args(struct man *man, int line,
85: int *pos, char *buf, char **v)
86: {
87:
88: if (0 == buf[*pos])
89: return(0);
90:
91: /* First parse non-quoted strings. */
92:
93: if ('\"' != buf[*pos]) {
94: *v = &buf[*pos];
95:
96: while (buf[*pos]) {
97: if (' ' == buf[*pos])
98: if ('\\' != buf[*pos - 1])
99: break;
100: (*pos)++;
101: }
102:
103: if (0 == buf[*pos])
104: return(1);
105:
106: buf[(*pos)++] = 0;
107:
108: if (0 == buf[*pos])
109: return(1);
110:
111: while (buf[*pos] && ' ' == buf[*pos])
112: (*pos)++;
113:
114: if (buf[*pos])
115: return(1);
116:
117: warnx("tail whitespace");
118: return(-1);
119: }
120:
121: /*
122: * If we're a quoted string (and quoted strings are allowed),
123: * then parse ahead to the next quote. If none's found, it's an
124: * error. After, parse to the next word.
125: */
126:
127: *v = &buf[++(*pos)];
128:
129: while (buf[*pos] && '\"' != buf[*pos])
130: (*pos)++;
131:
132: if (0 == buf[*pos]) {
133: warnx("unterminated quotation");
134: return(-1);
135: }
136:
137: buf[(*pos)++] = 0;
138: if (0 == buf[*pos])
139: return(1);
140:
141: while (buf[*pos] && ' ' == buf[*pos])
142: (*pos)++;
143:
144: if (buf[*pos])
145: return(1);
146:
147: warnx("tail whitespace");
148: return(-1);
149: }
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