usr/src/lib/libc/port/locale/setrunelocale.c

   1 /*
   2  * Copyright 2013 Garrett D'Amore <garrett@damore.org>
   3  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
   4  * Copyright (c) 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Paul Borman at Krystal Technologies.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 4. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include "lint.h"
  36 #include "file64.h"
  37 #include <errno.h>
  38 #include <limits.h>
  39 #include <string.h>
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <unistd.h>
  43 #include <wchar.h>
  44 #include "runetype.h"
  45 #include "ldpart.h"
  46 #include "mblocal.h"
  47 #include "setlocale.h"
  48 #include "_ctype.h"
  49 #include "lctype.h"
  50 #include "localeimpl.h"
  51
  52 extern _RuneLocale      *_Read_RuneMagi(const char *);
  53
  54 struct lc_ctype lc_ctype_posix = {
  55         .lc_mbrtowc = __mbrtowc_ascii,
  56         .lc_mbsinit = __mbsinit_ascii,
  57         .lc_mbsnrtowcs = __mbsnrtowcs_ascii,
  58         .lc_wcrtomb = __wcrtomb_ascii,
  59         .lc_wcsnrtombs = __wcsnrtombs_ascii,
  60         .lc_is_ascii = 1,
  61         .lc_max_mblen = 1,
  62         .lc_trans_upper = _DefaultRuneLocale.__mapupper,
  63         .lc_trans_lower = _DefaultRuneLocale.__maplower,
  64         .lc_ctype_mask = _DefaultRuneLocale.__runetype,
  65 };
  66
  67 struct locdata __posix_ctype_locdata = {
  68         .l_lname = "C",
  69         .l_data = { &lc_ctype_posix, &_DefaultRuneLocale }
  70 };
  71
  72
  73 /*
  74  * Table of initializers for encodings.  When you add a new encoding type,
  75  * this table should be updated. "NONE" is a special case and handled
  76  * separately in __lc_ctype_load.
  77  */
  78 static struct {
  79         const char *e_name;
  80         void (*e_init)(struct lc_ctype *);
  81 } encodings[] = {
  82         { "UTF-8",      _UTF8_init },
  83         { "EUC-CN",     _EUC_CN_init },
  84         { "EUC-JP",     _EUC_JP_init },
  85         { "EUC-KR",     _EUC_KR_init },
  86         { "EUC-TW",     _EUC_TW_init },
  87         { "GB18030",    _GB18030_init },
  88         { "GB2312",     _GB2312_init },
  89         { "GBK",        _GBK_init },
  90         { "BIG5",       _BIG5_init },
  91         { "MSKanji",    _MSKanji_init },
  92         { NULL,         NULL }
  93 };
  94
  95
  96 struct locdata *
  97 __lc_ctype_load(const char *name)
  98 {
  99         struct locdata *ldata;
 100         struct lc_ctype *lct;
 101         _RuneLocale *rl;
 102         int i;
 103         char path[PATH_MAX];
 104
 105         if ((ldata = __locdata_alloc(name, sizeof (*lct))) == NULL)
 106                 return (NULL);
 107         lct = ldata->l_data[0];
 108         /*
 109          * Slurp the locale file into the cache.
 110          */
 111
 112         (void) snprintf(path, sizeof (path), "%s/%s/LC_CTYPE/LCL_DATA",
 113             _PathLocale, name);
 114
 115         if ((rl = _Read_RuneMagi(path)) == NULL) {
 116                 __locdata_free(ldata);
 117                 errno = EINVAL;
 118                 return (NULL);
 119         }
 120         ldata->l_data[1] = rl;
 121
 122         lct->lc_mbrtowc = NULL;
 123         lct->lc_mbsinit = NULL;
 124         lct->lc_mbsnrtowcs = NULL;
 125         lct->lc_wcrtomb = NULL;
 126         lct->lc_wcsnrtombs = NULL;
 127         lct->lc_ctype_mask = rl->__runetype;
 128         lct->lc_trans_upper = rl->__mapupper;
 129         lct->lc_trans_lower = rl->__maplower;
 130
 131         /*
 132          * Set up the function pointers. "NONE" is accepted either as is, or if
 133          * followed by a colon, as a prefix.
 134          */
 135         if ((strcmp(rl->__encoding, "NONE") == 0) ||
 136             (strncmp(rl->__encoding, "NONE:", 5) == 0)) {
 137                 _none_init(lct);
 138                 return (ldata);
 139         }
 140         for (i = 0; encodings[i].e_name != NULL; i++) {
 141                 if (strcmp(rl->__encoding, encodings[i].e_name) == 0) {
 142                         encodings[i].e_init(lct);
 143                         break;
 144                 }
 145         }
 146         if (encodings[i].e_name == NULL) {
 147                 __locdata_free(ldata);
 148                 errno = EINVAL;
 149                 return (NULL);
 150         }
 151
 152
 153         return (ldata);
 154 }