cosmopolitan/third_party/regex/regerror.c

62 lines
3.5 KiB
C

/*-*- 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);
}