1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/* $OpenBSD: regerror.c,v 1.13 2005/08/05 13:03:00 espie Exp $ */
/*-
* Copyright (c) 1992, 1993, 1994 Henry Spencer.
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Henry Spencer.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)regerror.c 8.4 (Berkeley) 3/20/94
*/
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <limits.h>
#include <stdlib.h>
#include "r_regex.h"
#include "utils.h"
static char *regatoi(const RRegex*, char *, int);
static struct rerr {
int code;
char *name;
char *explain;
} rerrs[] = {
{ R_REGEX_NOMATCH, "R_REGEX_NOMATCH", "regexec() failed to match" },
{ R_REGEX_BADPAT, "R_REGEX_BADPAT", "invalid regular expression" },
{ R_REGEX_ECOLLATE, "R_REGEX_ECOLLATE", "invalid collating element" },
{ R_REGEX_ECTYPE, "R_REGEX_ECTYPE", "invalid character class" },
{ R_REGEX_EESCAPE, "R_REGEX_EESCAPE", "trailing backslash (\\)" },
{ R_REGEX_ESUBREG, "R_REGEX_ESUBREG", "invalid backreference number" },
{ R_REGEX_EBRACK, "R_REGEX_EBRACK", "brackets ([ ]) not balanced" },
{ R_REGEX_EPAREN, "R_REGEX_EPAREN", "parentheses not balanced" },
{ R_REGEX_EBRACE, "R_REGEX_EBRACE", "braces not balanced" },
{ R_REGEX_BADBR, "R_REGEX_BADBR", "invalid repetition count(s)" },
{ R_REGEX_ERANGE, "R_REGEX_ERANGE", "invalid character range" },
{ R_REGEX_ESPACE, "R_REGEX_ESPACE", "out of memory" },
{ R_REGEX_BADRPT, "R_REGEX_BADRPT", "repetition-operator operand invalid" },
{ R_REGEX_EMPTY, "R_REGEX_EMPTY", "empty (sub)expression" },
{ R_REGEX_ASSERT, "R_REGEX_ASSERT", "\"can't happen\" -- you found a bug" },
{ R_REGEX_INVARG, "R_REGEX_INVARG", "invalid argument to regex routine" },
{ 0, "", "*** unknown regexp error code ***" }
};
/*
- regerror - the interface to error numbers
= extern size_t regerror(int, const regex_t *, char *, size_t);
*/
/* ARGSUSED */
size_t
r_regex_error(int errcode, const RRegex *preg, char *errbuf, size_t errbuf_size)
{
struct rerr *r;
size_t len;
int target = errcode &~ R_REGEX_ITOA;
char *s;
char convbuf[50];
if (errcode == R_REGEX_ATOI)
s = regatoi(preg, convbuf, sizeof convbuf);
else {
for (r = rerrs; r->code != 0; r++)
if (r->code == target)
break;
if (errcode&R_REGEX_ITOA) {
if (r->code != 0) {
(void) strlcpy(convbuf, r->name, sizeof (convbuf)-1);
} else
(void)snprintf(convbuf, sizeof convbuf,
"R_REGEX_0x%x", target);
s = convbuf;
} else s = r->explain;
}
len = strlen(s) + 1;
if (errbuf_size > 0)
strlcpy(errbuf, s, errbuf_size);
return(len);
}
/*
- regatoi - internal routine to implement R_REGEX_ATOI
*/
static char *
regatoi(const RRegex *preg, char *localbuf, int localbufsize)
{
struct rerr *r;
for (r = rerrs; r->code != 0; r++)
if (strcmp(r->name, preg->re_endp) == 0)
break;
if (r->code == 0)
return("0");
(void)snprintf(localbuf, localbufsize, "%d", r->code);
return(localbuf);
}
|
