187 lines
5.9 KiB
C
187 lines
5.9 KiB
C
/* $NetBSD: regerror.c,v 1.4 1995/02/27 13:29:20 cgd Exp $ */
|
|
|
|
/*-
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 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.
|
|
*
|
|
* @(#)regerror.c 8.4 (Berkeley) 3/20/94
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
#if 0
|
|
static char sccsid[] = "@(#)regerror.c 8.4 (Berkeley) 3/20/94";
|
|
#else
|
|
static char rcsid[] = "$NetBSD: regerror.c,v 1.4 1995/02/27 13:29:20 cgd Exp $";
|
|
#endif
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <sys/types.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
#include <limits.h>
|
|
#include <stdlib.h>
|
|
#include <regex.h>
|
|
|
|
#include "utils.h"
|
|
|
|
/* ========= begin header generated by ./mkh ========= */
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* === regerror.c === */
|
|
static char *regatoi __P((const regex_t *preg, char *localbuf));
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
/* ========= end header generated by ./mkh ========= */
|
|
/*
|
|
= #define REG_NOMATCH 1
|
|
= #define REG_BADPAT 2
|
|
= #define REG_ECOLLATE 3
|
|
= #define REG_ECTYPE 4
|
|
= #define REG_EESCAPE 5
|
|
= #define REG_ESUBREG 6
|
|
= #define REG_EBRACK 7
|
|
= #define REG_EPAREN 8
|
|
= #define REG_EBRACE 9
|
|
= #define REG_BADBR 10
|
|
= #define REG_ERANGE 11
|
|
= #define REG_ESPACE 12
|
|
= #define REG_BADRPT 13
|
|
= #define REG_EMPTY 14
|
|
= #define REG_ASSERT 15
|
|
= #define REG_INVARG 16
|
|
= #define REG_ATOI 255 // convert name to number (!)
|
|
= #define REG_ITOA 0400 // convert number to name (!)
|
|
*/
|
|
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",
|
|
REG_EMPTY, "REG_EMPTY", "empty (sub)expression",
|
|
REG_ASSERT, "REG_ASSERT", "\"can't happen\" -- you found a bug",
|
|
REG_INVARG, "REG_INVARG", "invalid argument to regex routine",
|
|
0, "", "*** unknown regexp error code ***",
|
|
};
|
|
|
|
/*
|
|
- regerror - the interface to error numbers
|
|
= extern size_t regerror(int, const regex_t *, char *, size_t);
|
|
*/
|
|
/* ARGSUSED */
|
|
size_t
|
|
regerror(errcode, preg, errbuf, errbuf_size)
|
|
int errcode;
|
|
const regex_t *preg;
|
|
char *errbuf;
|
|
size_t errbuf_size;
|
|
{
|
|
register struct rerr *r;
|
|
register size_t len;
|
|
register int target = errcode &~ REG_ITOA;
|
|
register char *s;
|
|
char convbuf[50];
|
|
|
|
if (errcode == REG_ATOI)
|
|
s = regatoi(preg, convbuf);
|
|
else {
|
|
for (r = rerrs; r->code != 0; r++)
|
|
if (r->code == target)
|
|
break;
|
|
|
|
if (errcode®_ITOA) {
|
|
if (r->code != 0)
|
|
(void) strcpy(convbuf, r->name);
|
|
else
|
|
sprintf(convbuf, "REG_0x%x", target);
|
|
assert(strlen(convbuf) < sizeof(convbuf));
|
|
s = convbuf;
|
|
} else
|
|
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);
|
|
}
|
|
|
|
/*
|
|
- regatoi - internal routine to implement REG_ATOI
|
|
== static char *regatoi(const regex_t *preg, char *localbuf);
|
|
*/
|
|
static char *
|
|
regatoi(preg, localbuf)
|
|
const regex_t *preg;
|
|
char *localbuf;
|
|
{
|
|
register struct rerr *r;
|
|
register size_t siz;
|
|
register char *p;
|
|
|
|
for (r = rerrs; r->code != 0; r++)
|
|
if (strcmp(r->name, preg->re_endp) == 0)
|
|
break;
|
|
if (r->code == 0)
|
|
return("0");
|
|
|
|
sprintf(localbuf, "%d", r->code);
|
|
return(localbuf);
|
|
}
|