Subversion Repositories planix.SVN

/*
 * Changes by Gunnar Ritter, Freiburg i. Br., Germany, November 2002.
 *
 * Sccsid @(#)regerror.c        1.4 (gritter) 3/29/03
 */
/*  UNIX(R) Regular Expresssion Library
 *
 *  Note: Code is released under the GNU LGPL
 *
 *  Copyright (C) 2001 Caldera International, Inc.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to:
 *        Free Software Foundation, Inc.
 *        59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/*      #include "synonyms.h"   */
#include <string.h>
#include "re.h"
/*      include "_locale.h"     */

/*      #pragma weak regerror = _regerror       */

size_t
regerror(int err, const regex_t *ep, char *str, size_t max)
{
        const struct
        {
                int             index;
                const char      *str;
        } unk = 
        {
                        88,  "unknown regular expression error"
        }, msgs[] =
        {
        /*ENOSYS*/      { 89,  "feature not implemented" },
        /*0*/           { 0,   "" },
        /*NOMATCH*/     { 90,  "regular expression failed to match" },
        /*BADPAT*/      { 91,  "invalid regular expression" },
        /*ECOLLATE*/    { 92,  "invalid collating element construct" },
        /*ECTYPE*/      { 93,  "invalid character class construct" },
        /*EEQUIV*/      { 94,  "invalid equivalence class construct" },
        /*EBKTCHAR*/    { 95,  "invalid character in '[ ]' construct" },
        /*EESCAPE*/     { 96,  "trailing \\ in pattern" },
        /*ESUBREG*/     { 97,  "'\\digit' out of range" },
        /*EBRACK*/      { 98,  "'[ ]' imbalance" },
        /*EMPTYSUBBKT*/ { 99,  "empty nested '[ ]' construct" },
        /*EMPTYPAREN*/  { 100, "empty '\\( \\)' or '( )'" },
        /*NOPAT*/       { 101, "empty pattern" },
        /*EPAREN*/      { 102, "'\\( \\)' or '( )' imbalance" },
        /*EBRACE*/      { 103, "'\\{ \\} or '{ }' imbalance" },
        /*BADBR*/       { 104, "invalid '\\{ \\}' or '{ }'" },
        /*ERANGE*/      { 105, "invalid endpoint in range" },
        /*ESPACE*/      { 106, "out of regular expression memory" },
        /*BADRPT*/      { 107, "invalid *, +, ?, \\{\\} or {} operator" },
        /*BADESC*/      { 108, "invalid escape sequence (e.g. \\0)" },
        /*ILLSEQ*/      { 109, "illegal byte sequence"}
        };
        const char *p;
        size_t len;
        int i;

        if (err < REG_ENOSYS || REG_ILLSEQ < err)
        {
                i = unk.index;
                p = unk.str;
        }
        else
        {
                i = msgs[err - REG_ENOSYS].index;
                p = msgs[err - REG_ENOSYS].str;
        }
/*      p = __gtxt(_str_uxlibc, i, p);  */
        len = strlen(p) + 1;
        if (max != 0)
        {
                if (max > len)
                        max = len;
                else if (max < len)
                        str[--max] = '\0';
                memcpy(str, p, max);
        }
        return len;
}