regerror.c revision 4297a3b0d0a35d80f86fff155e288e885a100e6d
/*
* Copyright (c) 1992, 1993, 1994 Henry Spencer.
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Henry Spencer.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Copyright 2010 Nexenta Systems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include "lint.h"
#include "file64.h"
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <stdlib.h>
#include <regex.h>
#include "utils.h"
static struct rerr {
int code;
char *name;
char *explain;
} rerrs[] = {
{REG_NOMATCH, "REG_NOMATCH", "regexec() failed to match"},
{REG_BADPAT, "REG_BADPAT", "invalid regular expression"},
{REG_ECOLLATE, "REG_ECOLLATE", "invalid collating element"},
{REG_ECTYPE, "REG_ECTYPE", "invalid character class"},
{REG_EESCAPE, "REG_EESCAPE", "trailing backslash (\\)"},
{REG_ESUBREG, "REG_ESUBREG", "invalid backreference number"},
{REG_EBRACK, "REG_EBRACK", "brackets ([ ]) not balanced"},
{REG_EPAREN, "REG_EPAREN", "parentheses not balanced"},
{REG_EBRACE, "REG_EBRACE", "braces not balanced"},
{REG_BADBR, "REG_BADBR", "invalid repetition count(s)"},
{REG_ERANGE, "REG_ERANGE", "invalid character range"},
{REG_ESPACE, "REG_ESPACE", "out of memory"},
{REG_BADRPT, "REG_BADRPT", "repetition-operator operand invalid"},
#ifdef REG_EMPTY
{REG_EMPTY, "REG_EMPTY", "empty (sub)expression"},
#endif
{REG_EFATAL, "REG_EFATAL", "\"can't happen\" -- you found a bug"},
#ifdef REG_INVARG
{REG_INVARG, "REG_INVARG", "invalid argument to regex routine"},
#endif
{REG_ECHAR, "REG_ECHAR", "illegal byte sequence"},
{REG_ENOSYS, "REG_ENOSYS", "function not supported"},
{REG_STACK, "REG_STACK", "backtrack stack overflow"},
{REG_ENSUB, "REG_ENSUB", "more than 9 \\( \\) pairs"},
{REG_ENEWLINE, "REG_ENEWLINE", "\n found before end of pattern"},
{0, "", "*** unknown regexp error code ***"}
};
/*
* regerror - the interface to error numbers
*/
/* ARGSUSED */
size_t
regerror(int errcode, const regex_t *_RESTRICT_KYWD preg,
char *_RESTRICT_KYWD errbuf, size_t errbuf_size)
{
struct rerr *r;
size_t len;
char *s;
for (r = rerrs; r->code != 0; r++)
if (r->code == errcode)
break;
s = r->explain;
len = strlen(s) + 1;
if (errbuf_size > 0) {
if (errbuf_size > len)
(void) strcpy(errbuf, s);
else {
(void) strncpy(errbuf, s, errbuf_size-1);
errbuf[errbuf_size-1] = '\0';
}
}
return (len);
}