xref: /PHP-5.3/ext/mbstring/oniguruma/regposerr.c (revision 7aab46a2)
1 /**********************************************************************
2   regposerr.c - Oniguruma (regular expression library)
3 **********************************************************************/
4 /*-
5  * Copyright (c) 2002-2005  K.Kosako  <sndgk393 AT ybb DOT ne DOT jp>
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  */
29 
30 #include "config.h"
31 #include "onigposix.h"
32 
33 #ifdef HAVE_STRING_H
34 # include <string.h>
35 #else
36 # include <strings.h>
37 #endif
38 
39 static char* ESTRING[] = {
40   NULL,
41   "failed to match",                         /* REG_NOMATCH    */
42   "Invalid regular expression",              /* REG_BADPAT     */
43   "invalid collating element referenced",    /* REG_ECOLLATE   */
44   "invalid character class type referenced", /* REG_ECTYPE     */
45   "bad backslash-escape sequence",           /* REG_EESCAPE    */
46   "invalid back reference number",           /* REG_ESUBREG    */
47   "imbalanced [ and ]",                      /* REG_EBRACK     */
48   "imbalanced ( and )",                      /* REG_EPAREN     */
49   "imbalanced { and }",                      /* REG_EBRACE     */
50   "invalid repeat range {n,m}",              /* REG_BADBR      */
51   "invalid range",                           /* REG_ERANGE     */
52   "Out of memory",                           /* REG_ESPACE     */
53   "? * + not preceded by valid regular expression", /* REG_BADRPT   */
54 
55   /* Extended errors */
56   "internal error",                          /* REG_EONIG_INTERNAL */
57   "invalid wide char value",                 /* REG_EONIG_BADWC    */
58   "invalid argument",                        /* REG_EONIG_BADARG   */
59   "multi-thread error"                       /* REG_EONIG_THREAD   */
60 };
61 
62 #include <stdio.h>
63 
64 
65 extern size_t
regerror(int posix_ecode,const regex_t * reg,char * buf,size_t size)66 regerror(int posix_ecode, const regex_t* reg, char* buf, size_t size)
67 {
68   char* s;
69   char tbuf[35];
70   size_t len;
71 
72   if (posix_ecode > 0 && posix_ecode < sizeof(ESTRING) / sizeof(ESTRING[0])) {
73     s = ESTRING[posix_ecode];
74   }
75   else if (posix_ecode == 0) {
76     s = "";
77   }
78   else {
79     sprintf(tbuf, "undefined error code (%d)", posix_ecode);
80     s = tbuf;
81   }
82 
83   len = strlen(s) + 1; /* use strlen() because s is ascii encoding. */
84 
85   if (buf != NULL && size > 0) {
86     strncpy(buf, s, size - 1);
87     buf[size - 1] = '\0';
88   }
89   return len;
90 }
91