93 lines
3.1 KiB
C
93 lines
3.1 KiB
C
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/****************************************************************************
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* libs/libc/regex/regerror.c
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*
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* regerror.c - TRE POSIX compatible matching functions (and more).
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*
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* Copyright (c) 2001-2009 Ville Laurikari <vl@iki.fi>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <string.h>
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#include <regex.h>
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#include <stdio.h>
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/* Error message strings for error codes listed in `regex.h'. This list
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* needs to be in sync with the codes listed there, naturally.
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*/
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/* Converted to single string by Rich Felker to remove the need for
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* data relocations at runtime, 27 Feb 2006.
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*/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const char messages[] =
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{
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"No error\0"
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"No match\0"
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"Invalid regexp\0"
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"Unknown collating element\0"
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"Unknown character class name\0"
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"Trailing backslash\0"
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"Invalid back reference\0"
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"Missing ']'\0"
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"Missing ')'\0"
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"Missing '}'\0"
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"Invalid contents of {}\0"
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"Invalid character range\0"
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"Out of memory\0"
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"Repetition not preceded by valid expression\0"
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"\0Unknown error"
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};
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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size_t regerror(int e, const regex_t *restrict preg, char *restrict buf,
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size_t size)
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{
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const char *s;
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for (s = messages; e && *s; e--, s += strlen(s) + 1)
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{
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}
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if (!*s)
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{
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s++;
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}
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return 1 + snprintf(buf, size, "%s", s);
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}
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