76 lines
2 KiB
C
76 lines
2 KiB
C
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/*
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regerror.c - POSIX regerror() implementation for TRE.
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Copyright (c) 2001-2006 Ville Laurikari <vl@iki.fi>.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <string.h>
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#include <regex.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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/* 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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static const char tre_error_messages[] = {
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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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"XXX\0"
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};
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size_t
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regerror(int errcode, const regex_t *preg, char *errbuf, size_t errbuf_size)
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{
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const char *err;
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size_t err_len;
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if (errcode >= 0 && errcode <= REG_BADRPT)
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for (err=tre_error_messages; errcode; errcode--, err+=strlen(err)+1);
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else
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err = "Unknown error";
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err_len = strlen(err) + 1;
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if (errbuf_size > 0 && errbuf != NULL)
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{
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if (err_len > errbuf_size)
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{
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memcpy(errbuf, err, errbuf_size - 1);
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errbuf[errbuf_size - 1] = '\0';
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}
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else
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{
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strcpy(errbuf, err);
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}
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}
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return err_len;
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}
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/* EOF */
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