/* $NetBSD: regerror.c,v 1.22 2007/02/08 05:44:18 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 #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 1.22 2007/02/08 05:44:18 junyoung Exp $"); #endif #endif /* LIBC_SCCS and not lint */ #include "namespace.h" #include #include #include #include #include #include #include #include #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; }