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Annotation of embedaddon/libpdel/structs/type/structs_type_regex.c, revision 1.1

1.1     ! misho       1: 
        !             2: /*
        !             3:  * Copyright (c) 2001-2002 Packet Design, LLC.
        !             4:  * All rights reserved.
        !             5:  * 
        !             6:  * Subject to the following obligations and disclaimer of warranty,
        !             7:  * use and redistribution of this software, in source or object code
        !             8:  * forms, with or without modifications are expressly permitted by
        !             9:  * Packet Design; provided, however, that:
        !            10:  * 
        !            11:  *    (i)  Any and all reproductions of the source or object code
        !            12:  *         must include the copyright notice above and the following
        !            13:  *         disclaimer of warranties; and
        !            14:  *    (ii) No rights are granted, in any manner or form, to use
        !            15:  *         Packet Design trademarks, including the mark "PACKET DESIGN"
        !            16:  *         on advertising, endorsements, or otherwise except as such
        !            17:  *         appears in the above copyright notice or in the software.
        !            18:  * 
        !            19:  * THIS SOFTWARE IS BEING PROVIDED BY PACKET DESIGN "AS IS", AND
        !            20:  * TO THE MAXIMUM EXTENT PERMITTED BY LAW, PACKET DESIGN MAKES NO
        !            21:  * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING
        !            22:  * THIS SOFTWARE, INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED
        !            23:  * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
        !            24:  * OR NON-INFRINGEMENT.  PACKET DESIGN DOES NOT WARRANT, GUARANTEE,
        !            25:  * OR MAKE ANY REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS
        !            26:  * OF THE USE OF THIS SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY,
        !            27:  * RELIABILITY OR OTHERWISE.  IN NO EVENT SHALL PACKET DESIGN BE
        !            28:  * LIABLE FOR ANY DAMAGES RESULTING FROM OR ARISING OUT OF ANY USE
        !            29:  * OF THIS SOFTWARE, INCLUDING WITHOUT LIMITATION, ANY DIRECT,
        !            30:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, PUNITIVE, OR CONSEQUENTIAL
        !            31:  * DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, LOSS OF
        !            32:  * USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY THEORY OF
        !            33:  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
        !            34:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
        !            35:  * THE USE OF THIS SOFTWARE, EVEN IF PACKET DESIGN IS ADVISED OF
        !            36:  * THE POSSIBILITY OF SUCH DAMAGE.
        !            37:  *
        !            38:  * Author: Archie Cobbs <archie@freebsd.org>
        !            39:  */
        !            40: 
        !            41: #include <sys/types.h>
        !            42: 
        !            43: #include <stdlib.h>
        !            44: #include <stdio.h>
        !            45: #include <stdarg.h>
        !            46: #include <string.h>
        !            47: #include <errno.h>
        !            48: #include <regex.h>
        !            49: 
        !            50: #include "structs/structs.h"
        !            51: #include "structs/type/array.h"
        !            52: #include "structs/type/string.h"
        !            53: #include "structs/type/regex.h"
        !            54: #include "util/typed_mem.h"
        !            55: 
        !            56: /* Pre-defined types */
        !            57: const struct structs_type structs_type_regex =
        !            58:        STRUCTS_REGEX_TYPE(STRUCTS_REGEX_MTYPE, REG_EXTENDED);
        !            59: const struct structs_type structs_type_regex_icase =
        !            60:        STRUCTS_REGEX_TYPE(STRUCTS_REGEX_MTYPE, REG_EXTENDED | REG_ICASE);
        !            61: 
        !            62: int
        !            63: structs_regex_equal(const struct structs_type *type,
        !            64:        const void *v1, const void *v2)
        !            65: {
        !            66:        const struct structs_regex *const r1 = v1;
        !            67:        const struct structs_regex *const r2 = v2;
        !            68: 
        !            69:        if (r1->pat == NULL)
        !            70:                return (r2->pat == NULL);
        !            71:        if (r2->pat == NULL)
        !            72:                return (0);
        !            73:        return (strcmp(r1->pat, r2->pat) == 0);
        !            74: }
        !            75: 
        !            76: char *
        !            77: structs_regex_ascify(const struct structs_type *type,
        !            78:        const char *mtype, const void *data)
        !            79: {
        !            80:        const struct structs_regex *const r = data;
        !            81: 
        !            82:        return (STRDUP(mtype, (r->pat != NULL) ? r->pat : ""));
        !            83: }
        !            84: 
        !            85: int
        !            86: structs_regex_binify(const struct structs_type *type,
        !            87:        const char *ascii, void *data, char *ebuf, size_t emax)
        !            88: {
        !            89:        struct structs_regex *const r = data;
        !            90:        const char *mtype = type->args[0].s;
        !            91:        const int flags = type->args[1].i;
        !            92:        int errno_save;
        !            93:        int err;
        !            94: 
        !            95:        /* Empty string? */
        !            96:        if (*ascii == '\0') {
        !            97:                memset(r, 0, sizeof(*r));
        !            98:                return (0);
        !            99:        }
        !           100: 
        !           101:        /* Compile pattern */
        !           102:        if ((err = regcomp(&r->reg, ascii, flags)) != 0) {
        !           103:                regerror(err, &r->reg, ebuf, emax);
        !           104:                switch (err) {
        !           105:                case REG_ESPACE:
        !           106:                        errno = ENOMEM;
        !           107:                        break;
        !           108:                default:
        !           109:                        errno = EINVAL;
        !           110:                        break;
        !           111:                }
        !           112:                return (-1);
        !           113:        }
        !           114: 
        !           115:        /* Save a copy of the pattern string */
        !           116:        if ((r->pat = STRDUP(mtype, ascii)) == NULL) {
        !           117:                errno_save = errno;
        !           118:                regfree(&r->reg);
        !           119:                errno = errno_save;
        !           120:                return (-1);
        !           121:        }
        !           122: 
        !           123:        /* OK */
        !           124:        return (0);
        !           125: }
        !           126: 
        !           127: void
        !           128: structs_regex_free(const struct structs_type *type, void *data)
        !           129: {
        !           130:        const char *mtype = type->args[0].s;
        !           131:        struct structs_regex *const r = data;
        !           132: 
        !           133:        if (r->pat != NULL) {
        !           134:                FREE(mtype, (char *)r->pat);
        !           135:                regfree(&r->reg);
        !           136:                memset(r, 0, sizeof(*r));
        !           137:        }
        !           138: }
        !           139: