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Annotation of src/lib/libc/locale/ctypeio.c, Revision 1.1

1.1     ! kleink      1: /*     $NetBSD$        */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 1997 Christos Zoulas.  All rights reserved.
        !             5:  *
        !             6:  * Redistribution and use in source and binary forms, with or without
        !             7:  * modification, are permitted provided that the following conditions
        !             8:  * are met:
        !             9:  * 1. Redistributions of source code must retain the above copyright
        !            10:  *    notice, this list of conditions and the following disclaimer.
        !            11:  * 2. Redistributions in binary form must reproduce the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer in the
        !            13:  *    documentation and/or other materials provided with the distribution.
        !            14:  * 3. All advertising materials mentioning features or use of this software
        !            15:  *    must display the following acknowledgement:
        !            16:  *     This product includes software developed by Christos Zoulas.
        !            17:  * 4. The name of the author may not be used to endorse or promote products
        !            18:  *    derived from this software without specific prior written permission.
        !            19:  *
        !            20:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            21:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
        !            22:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            23:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
        !            24:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
        !            25:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
        !            26:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
        !            27:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
        !            28:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
        !            29:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            30:  */
        !            31:
        !            32: #include <sys/types.h>
        !            33: #include <stdio.h>
        !            34: #include <stdlib.h>
        !            35: #define _CTYPE_PRIVATE
        !            36: #include <ctype.h>
        !            37: #include "ctypeio.h"
        !            38:
        !            39: int
        !            40: __loadctype(name)
        !            41:        const char *name;
        !            42: {
        !            43:        FILE *fp;
        !            44:        char id[sizeof(_CTYPE_ID) - 1];
        !            45:        u_int32_t i, len;
        !            46:        unsigned char *new_ctype = NULL;
        !            47:        short *new_toupper = NULL, *new_tolower = NULL;
        !            48:
        !            49:        if ((fp = fopen(name, "r")) == NULL)
        !            50:                return 0;
        !            51:
        !            52:        if (fread(id, sizeof(id), 1, fp) != 1)
        !            53:                goto bad;
        !            54:
        !            55:        if (memcmp(id, _CTYPE_ID, sizeof(id)) != 0)
        !            56:                goto bad;
        !            57:
        !            58:        if (fread(&i, sizeof(u_int32_t), 1, fp) != 1)
        !            59:                goto bad;
        !            60:
        !            61:        if ((i = ntohl(i)) != _CTYPE_REV)
        !            62:                goto bad;
        !            63:
        !            64:        if (fread(&len, sizeof(u_int32_t), 1, fp) != 1)
        !            65:                goto bad;
        !            66:
        !            67:        if ((len = ntohl(len)) != _CTYPE_NUM_CHARS)
        !            68:                goto bad;
        !            69:
        !            70:        if ((new_ctype = malloc(sizeof(u_int8_t) * (1 + len))) == NULL)
        !            71:                goto bad;
        !            72:
        !            73:        new_ctype[0] = 0;
        !            74:        if (fread(&new_ctype[1], sizeof(u_int8_t), len, fp) != len)
        !            75:                goto bad;
        !            76:
        !            77:        if ((new_toupper = malloc(sizeof(int16_t) * (1 + len))) == NULL)
        !            78:                goto bad;
        !            79:
        !            80:        new_toupper[0] = EOF;
        !            81:        if (fread(&new_toupper[1], sizeof(int16_t), len, fp) != len)
        !            82:                goto bad;
        !            83:
        !            84:        if ((new_tolower = malloc(sizeof(int16_t) * (1 + len))) == NULL)
        !            85:                goto bad;
        !            86:
        !            87:        new_tolower[0] = EOF;
        !            88:        if (fread(&new_tolower[1], sizeof(int16_t), len, fp) != len)
        !            89:                goto bad;
        !            90:
        !            91: #if BYTE_ORDER == LITTLE_ENDIAN
        !            92:        for (i = 1; i <= len; i++) {
        !            93:                new_toupper[i] = ntohs(new_toupper[i]);
        !            94:                new_tolower[i] = ntohs(new_tolower[i]);
        !            95:        }
        !            96: #endif
        !            97:
        !            98:        (void) fclose(fp);
        !            99:        if (_ctype_ != _C_ctype_)
        !           100:                free((void *) _ctype_);
        !           101:        _ctype_ = new_ctype;
        !           102:        if (_toupper_tab_ != _C_toupper_)
        !           103:                free((void *) _toupper_tab_);
        !           104:        _toupper_tab_ = new_toupper;
        !           105:        if (_tolower_tab_ != _C_tolower_)
        !           106:                free((void *) _tolower_tab_);
        !           107:        _tolower_tab_ = new_tolower;
        !           108:
        !           109:        return 1;
        !           110: bad:
        !           111:        free(new_tolower);
        !           112:        free(new_toupper);
        !           113:        free(new_ctype);
        !           114:        (void) fclose(fp);
        !           115:        return 0;
        !           116: }
        !           117:
        !           118: int
        !           119: __savectype(name, new_ctype, new_toupper, new_tolower)
        !           120:        const char *name;
        !           121:        unsigned char *new_ctype;
        !           122:        short *new_toupper, *new_tolower;
        !           123: {
        !           124:        FILE *fp;
        !           125:        u_int32_t i, len = _CTYPE_NUM_CHARS;
        !           126:
        !           127:        if ((fp = fopen(name, "w")) == NULL)
        !           128:                return 0;
        !           129:
        !           130:        if (fwrite(_CTYPE_ID, sizeof(_CTYPE_ID) - 1, 1, fp) != 1)
        !           131:                goto bad;
        !           132:
        !           133:        i = htonl(_CTYPE_REV);
        !           134:        if (fwrite(&i, sizeof(u_int32_t), 1, fp) != 1)
        !           135:                goto bad;
        !           136:
        !           137:        i = htonl(len);
        !           138:        if (fwrite(&i, sizeof(u_int32_t), 1, fp) != 1)
        !           139:                goto bad;
        !           140:
        !           141:        if (fwrite(&new_ctype[1], sizeof(u_int8_t), len, fp) != len)
        !           142:                goto bad;
        !           143:
        !           144: #if BYTE_ORDER == LITTLE_ENDIAN
        !           145:        for (i = 1; i <= len; i++) {
        !           146:                new_toupper[i] = htons(new_toupper[i]);
        !           147:                new_tolower[i] = htons(new_tolower[i]);
        !           148:        }
        !           149: #endif
        !           150:        if (fwrite(&new_toupper[1], sizeof(int16_t), len, fp) != len)
        !           151:                goto bad;
        !           152:
        !           153:        if (fwrite(&new_tolower[1], sizeof(int16_t), len, fp) != len)
        !           154:                goto bad;
        !           155:
        !           156:
        !           157:        (void) fclose(fp);
        !           158:        return 1;
        !           159: bad:
        !           160:        (void) fclose(fp);
        !           161:        return 0;
        !           162: }

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