| /* $NetBSD: regerror.c,v 1.23 2007/02/09 23:44:18 junyoung Exp $ */ |
| |
| /*- |
| * 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. 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 |
| */ |
| |
| /*- |
| * Copyright (c) 1992, 1993, 1994 Henry Spencer. |
| * |
| * 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 |
| */ |
| |
| #include <sys/cdefs.h> |
| #if defined(LIBC_SCCS) && !defined(lint) |
| #if 0 |
| static char sccsid[] = "@(#)regerror.c 8.4 (Berkeley) 3/20/94"; |
| #else |
| __RCSID("$NetBSD: regerror.c,v 1.23 2007/02/09 23:44:18 junyoung Exp $"); |
| #endif |
| #endif /* LIBC_SCCS and not lint */ |
| |
| #include "namespace.h" |
| #include <sys/types.h> |
| |
| #include <assert.h> |
| #include <ctype.h> |
| #include <limits.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <regex.h> |
| |
| #ifdef __weak_alias |
| __weak_alias(regerror,_regerror) |
| #endif |
| |
| #include "utils.h" |
| |
| /* ========= begin header generated by ./mkh ========= */ |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* === regerror.c === */ |
| static const char *regatoi(const regex_t *preg, char *localbuf, size_t buflen); |
| |
| #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 const struct rerr { |
| int code; |
| const char *name; |
| const 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( |
| int errcode, |
| const regex_t *preg, |
| char *errbuf, |
| size_t errbuf_size) |
| { |
| const struct rerr *r; |
| size_t len; |
| int target = errcode &~ REG_ITOA; |
| const char *s; |
| char convbuf[50]; |
| |
| _DIAGASSERT(errcode != REG_ATOI || preg != NULL); |
| _DIAGASSERT(errbuf != NULL); |
| |
| if (errcode == REG_ATOI) |
| s = regatoi(preg, convbuf, sizeof convbuf); |
| else { |
| for (r = rerrs; r->code != 0; r++) |
| if (r->code == target) |
| break; |
| |
| if (errcode & REG_ITOA) { |
| if (r->code != 0) { |
| (void)strlcpy(convbuf, r->name, sizeof convbuf); |
| } else |
| (void)snprintf(convbuf, sizeof convbuf, |
| "REG_0x%x", target); |
| s = convbuf; |
| } else |
| s = r->explain; |
| } |
| |
| len = strlen(s) + 1; |
| if (errbuf_size > 0) |
| (void)strlcpy(errbuf, s, errbuf_size); |
| |
| return(len); |
| } |
| |
| /* |
| * regatoi - internal routine to implement REG_ATOI |
| * static const char *regatoi(const regex_t *preg, char *localbuf, |
| * size_t buflen); |
| */ |
| static const char * |
| regatoi( |
| const regex_t *preg, |
| char *localbuf, |
| size_t buflen) |
| { |
| const struct rerr *r; |
| |
| for (r = rerrs; r->code != 0; r++) |
| if (strcmp(r->name, preg->re_endp) == 0) |
| break; |
| if (r->code == 0) |
| return "0"; |
| |
| (void)snprintf(localbuf, buflen, "%d", r->code); |
| return localbuf; |
| } |