xref: /PHP-7.1/ext/mbstring/oniguruma/regposerr.c (revision fe92d64a)
1 /**********************************************************************
2   regposerr.c - Oniguruma (regular expression library)
3 **********************************************************************/
4 /*-
5  * Copyright (c) 2002-2007  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 #if defined(__GNUC__)
40 #  define ARG_UNUSED  __attribute__ ((unused))
41 #else
42 #  define ARG_UNUSED
43 #endif
44 
45 static char* ESTRING[] = {
46   NULL,
47   "failed to match",                         /* REG_NOMATCH    */
48   "Invalid regular expression",              /* REG_BADPAT     */
49   "invalid collating element referenced",    /* REG_ECOLLATE   */
50   "invalid character class type referenced", /* REG_ECTYPE     */
51   "bad backslash-escape sequence",           /* REG_EESCAPE    */
52   "invalid back reference number",           /* REG_ESUBREG    */
53   "imbalanced [ and ]",                      /* REG_EBRACK     */
54   "imbalanced ( and )",                      /* REG_EPAREN     */
55   "imbalanced { and }",                      /* REG_EBRACE     */
56   "invalid repeat range {n,m}",              /* REG_BADBR      */
57   "invalid range",                           /* REG_ERANGE     */
58   "Out of memory",                           /* REG_ESPACE     */
59   "? * + not preceded by valid regular expression", /* REG_BADRPT   */
60 
61   /* Extended errors */
62   "internal error",                          /* REG_EONIG_INTERNAL */
63   "invalid wide char value",                 /* REG_EONIG_BADWC    */
64   "invalid argument",                        /* REG_EONIG_BADARG   */
65   "multi-thread error"                       /* REG_EONIG_THREAD   */
66 };
67 
68 #include <stdio.h>
69 
70 
71 extern size_t
regerror(int posix_ecode,const regex_t * reg ARG_UNUSED,char * buf,size_t size)72 regerror(int posix_ecode, const regex_t* reg ARG_UNUSED, char* buf,
73 	 size_t size)
74 {
75   char* s;
76   char tbuf[35];
77   size_t len;
78 
79   if (posix_ecode > 0
80       && posix_ecode < (int )(sizeof(ESTRING) / sizeof(ESTRING[0]))) {
81     s = ESTRING[posix_ecode];
82   }
83   else if (posix_ecode == 0) {
84     s = "";
85   }
86   else {
87     sprintf(tbuf, "undefined error code (%d)", posix_ecode);
88     s = tbuf;
89   }
90 
91   len = strlen(s) + 1; /* use strlen() because s is ascii encoding. */
92 
93   if (buf != NULL && size > 0) {
94     strncpy(buf, s, size - 1);
95     buf[size - 1] = '\0';
96   }
97   return len;
98 }
99