mandoc(1): Update to 1.9.13.
[dragonfly.git] / usr.bin / mandoc / man_argv.c
CommitLineData
32c903ac 1/* $Id: man_argv.c,v 1.1 2009/08/13 11:45:29 kristaps Exp $ */
589e7c1d
SW
2/*
3 * Copyright (c) 2008, 2009 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 above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17#include <sys/types.h>
18
19#include <assert.h>
20#include <stdlib.h>
21#include <string.h>
22
23#include "libman.h"
24
25
26int
27man_args(struct man *m, int line, int *pos, char *buf, char **v)
28{
29
30 assert(*pos);
31 assert(' ' != buf[*pos]);
32
33 if (0 == buf[*pos])
34 return(ARGS_EOLN);
35
36 *v = &buf[*pos];
37
38 /*
39 * Process a quoted literal. A quote begins with a double-quote
40 * and ends with a double-quote NOT preceded by a double-quote.
41 * Whitespace is NOT involved in literal termination.
42 */
43
44 if ('\"' == buf[*pos]) {
45 *v = &buf[++(*pos)];
46
47 for ( ; buf[*pos]; (*pos)++) {
48 if ('\"' != buf[*pos])
49 continue;
50 if ('\"' != buf[*pos + 1])
51 break;
52 (*pos)++;
53 }
54
55 if (0 == buf[*pos]) {
56 if ( ! man_pwarn(m, line, *pos, WTQUOTE))
57 return(ARGS_ERROR);
58 return(ARGS_QWORD);
59 }
60
61 buf[(*pos)++] = 0;
62
63 if (0 == buf[*pos])
64 return(ARGS_QWORD);
65
66 while (' ' == buf[*pos])
67 (*pos)++;
68
69 if (0 == buf[*pos])
70 if ( ! man_pwarn(m, line, *pos, WTSPACE))
71 return(ARGS_ERROR);
72
73 return(ARGS_QWORD);
74 }
75
76 /*
77 * A non-quoted term progresses until either the end of line or
78 * a non-escaped whitespace.
79 */
80
81 for ( ; buf[*pos]; (*pos)++)
82 if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
83 break;
84
85 if (0 == buf[*pos])
86 return(ARGS_WORD);
87
88 buf[(*pos)++] = 0;
89
90 while (' ' == buf[*pos])
91 (*pos)++;
92
93 if (0 == buf[*pos])
94 if ( ! man_pwarn(m, line, *pos, WTSPACE))
95 return(ARGS_ERROR);
96
97 return(ARGS_WORD);
98}