cosmopolitan/third_party/regex/regerror.c

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2020-06-15 14:18:57 +00:00
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
vi: set net ft=c ts=8 sts=2 sw=2 fenc=utf-8 :vi
Musl Libc
Copyright © 2005-2014 Rich Felker, et al.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "libc/fmt/fmt.h"
#include "third_party/regex/tre.inc"
/* 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 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"
"Repetition not preceded by valid expression\0"
"\0Unknown error"};
size_t regerror(int e, const regex_t *restrict preg, char *restrict buf,
size_t size) {
const char *s;
for (s = messages; e && *s; e--, s += strlen(s) + 1)
;
if (!*s) s++;
return 1 + snprintf(buf, size, "%s", s);
}