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/*
regerror.c - POSIX regerror() implementation for TRE.
Copyright (c) 2001-2006 Ville Laurikari <vl@iki.fi>.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <string.h>
#include <regex.h>
/* Error message strings for error codes listed in `regex.h'. This list
needs to be in sync with the codes listed there, naturally. */
/* Converted to single string by Rich Felker to remove the need for
* data relocations at runtime, 27 Feb 2006. */
static const char tre_error_messages[] = {
"No error\0"
"No match\0"
"Invalid regexp\0"
"Unknown collating element\0"
"Unknown character class name\0"
"Trailing backslash\0"
"Invalid back reference\0"
"Missing ']'\0"
"Missing ')'\0"
"Missing '}'\0"
"Invalid contents of {}\0"
"Invalid character range\0"
"Out of memory\0"
"XXX\0"
};
size_t
regerror(int errcode, const regex_t *preg, char *errbuf, size_t errbuf_size)
{
const char *err;
size_t err_len;
if (errcode >= 0 && errcode <= REG_BADRPT)
for (err=tre_error_messages; errcode; errcode--, err+=strlen(err)+1);
else
err = "Unknown error";
err_len = strlen(err) + 1;
if (errbuf_size > 0 && errbuf != NULL)
{
if (err_len > errbuf_size)
{
memcpy(errbuf, err, errbuf_size - 1);
errbuf[errbuf_size - 1] = '\0';
}
else
{
strcpy(errbuf, err);
}
}
return err_len;
}
/* EOF */
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