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
128
129
130
131
132
133
134
135
|
/*-
* This code is derived from OpenBSD's libc/regex, original license follows:
*
* 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 "regex_impl.h"
#include "regutils.h"
#ifdef _MSC_VER
#define snprintf _snprintf
#endif
static const char *regatoi(const llvm_regex_t *, char *, int);
static struct rerr {
int code;
const char *name;
const char *explain;
} rerrs[] = {
{ REG_NOMATCH, "REG_NOMATCH", "llvm_regexec() failed to match" },
{ REG_BADPAT, "REG_BADPAT", "invalid regular expression" },
{ REG_ECOLLATE, "REG_ECOLLATE", "invalid collating element" },
{ REG_ECTYPE, "REG_ECTYPE", "invalid character class" },
{ REG_EESCAPE, "REG_EESCAPE", "trailing backslash (\\)" },
{ REG_ESUBREG, "REG_ESUBREG", "invalid backreference number" },
{ REG_EBRACK, "REG_EBRACK", "brackets ([ ]) not balanced" },
{ REG_EPAREN, "REG_EPAREN", "parentheses not balanced" },
{ REG_EBRACE, "REG_EBRACE", "braces not balanced" },
{ REG_BADBR, "REG_BADBR", "invalid repetition count(s)" },
{ REG_ERANGE, "REG_ERANGE", "invalid character range" },
{ REG_ESPACE, "REG_ESPACE", "out of memory" },
{ REG_BADRPT, "REG_BADRPT", "repetition-operator operand invalid" },
{ REG_EMPTY, "REG_EMPTY", "empty (sub)expression" },
{ REG_ASSERT, "REG_ASSERT", "\"can't happen\" -- you found a bug" },
{ REG_INVARG, "REG_INVARG", "invalid argument to regex routine" },
{ 0, "", "*** unknown regexp error code ***" }
};
/*
- llvm_regerror - the interface to error numbers
= extern size_t llvm_regerror(int, const llvm_regex_t *, char *, size_t);
*/
/* ARGSUSED */
size_t
llvm_regerror(int errcode, const llvm_regex_t *preg, char *errbuf, size_t errbuf_size)
{
struct rerr *r;
size_t len;
int target = errcode &~ REG_ITOA;
const char *s;
char convbuf[50];
if (errcode == REG_ATOI)
s = regatoi(preg, convbuf, sizeof convbuf);
else {
for (r = rerrs; r->code != 0; r++)
if (r->code == target)
break;
if (errcode®_ITOA) {
if (r->code != 0) {
assert(strlen(r->name) < sizeof(convbuf));
(void) llvm_strlcpy(convbuf, r->name, sizeof convbuf);
} else
(void)snprintf(convbuf, sizeof convbuf,
"REG_0x%x", target);
s = convbuf;
} else
s = r->explain;
}
len = strlen(s) + 1;
if (errbuf_size > 0) {
llvm_strlcpy(errbuf, s, errbuf_size);
}
return(len);
}
/*
- regatoi - internal routine to implement REG_ATOI
*/
static const char *
regatoi(const llvm_regex_t *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);
}
|
