root/ext/mbstring/libmbfl/filters/mbfilter_iso8859_15.c

DEFINITIONS

1. mbfl_filt_conv_8859_15_wchar
2. mbfl_filt_conv_wchar_8859_15

   1 /*
   2  * "streamable kanji code filter and converter"
   3  * Copyright (c) 1998-2002 HappySize, Inc. All rights reserved.
   4  *
   5  * LICENSE NOTICES
   6  *
   7  * This file is part of "streamable kanji code filter and converter",
   8  * which is distributed under the terms of GNU Lesser General Public
   9  * License (version 2) as published by the Free Software Foundation.
  10  *
  11  * This software is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with "streamable kanji code filter and converter";
  18  * if not, write to the Free Software Foundation, Inc., 59 Temple Place,
  19  * Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  * The author of this file:
  22  *
  23  */
  24 /*
  25  * The source code included in this files was separated from mbfilter.c
  26  * by moriyoshi koizumi <moriyoshi@php.net> on 4 dec 2002.
  27  *
  28  */
  29 
  30 #ifdef HAVE_CONFIG_H
  31 #include "config.h"
  32 #endif
  33 
  34 #include "mbfilter.h"
  35 #include "mbfilter_iso8859_15.h"
  36 #include "unicode_table_iso8859_15.h"
  37 
  38 static const char *mbfl_encoding_8859_15_aliases[] = {"ISO_8859-15", NULL};
  39 
  40 const mbfl_encoding mbfl_encoding_8859_15 = {
  41         mbfl_no_encoding_8859_15,
  42         "ISO-8859-15",
  43         "ISO-8859-15",
  44         (const char *(*)[])&mbfl_encoding_8859_15_aliases,
  45         NULL,
  46         MBFL_ENCTYPE_SBCS
  47 };
  48 
  49 const struct mbfl_identify_vtbl vtbl_identify_8859_15 = {
  50         mbfl_no_encoding_8859_15,
  51         mbfl_filt_ident_common_ctor,
  52         mbfl_filt_ident_common_dtor,
  53         mbfl_filt_ident_true
  54 };
  55 
  56 const struct mbfl_convert_vtbl vtbl_8859_15_wchar = {
  57         mbfl_no_encoding_8859_15,
  58         mbfl_no_encoding_wchar,
  59         mbfl_filt_conv_common_ctor,
  60         mbfl_filt_conv_common_dtor,
  61         mbfl_filt_conv_8859_15_wchar,
  62         mbfl_filt_conv_common_flush
  63 };
  64 
  65 const struct mbfl_convert_vtbl vtbl_wchar_8859_15 = {
  66         mbfl_no_encoding_wchar,
  67         mbfl_no_encoding_8859_15,
  68         mbfl_filt_conv_common_ctor,
  69         mbfl_filt_conv_common_dtor,
  70         mbfl_filt_conv_wchar_8859_15,
  71         mbfl_filt_conv_common_flush
  72 };
  73 
  74 #define CK(statement)   do { if ((statement) < 0) return (-1); } while (0)
  75 
  76 /*
  77  * ISO-8859-15 => wchar
  78  */
  79 int mbfl_filt_conv_8859_15_wchar(int c, mbfl_convert_filter *filter)
  80 {
  81         int s;
  82 
  83         if (c >= 0 && c < 0xa0) {
  84                 s = c;
  85         } else if (c >= 0xa0 && c < 0x100) {
  86                 s = iso8859_15_ucs_table[c - 0xa0];
  87                 if (s <= 0) {
  88                         s = c;
  89                         s &= MBFL_WCSPLANE_MASK;
  90                         s |= MBFL_WCSPLANE_8859_15;
  91                 }
  92         } else {
  93                 s = c;
  94                 s &= MBFL_WCSGROUP_MASK;
  95                 s |= MBFL_WCSGROUP_THROUGH;
  96         }
  97 
  98         CK((*filter->output_function)(s, filter->data));
  99 
 100         return c;
 101 }
 102 
 103 /*
 104  * wchar => ISO-8859-15
 105  */
 106 int mbfl_filt_conv_wchar_8859_15(int c, mbfl_convert_filter *filter)
 107 {
 108         int s, n;
 109 
 110         if (c >= 0 && c < 0xa0) {
 111                 s = c;
 112         } else {
 113                 s = -1;
 114                 n = 95;
 115                 while (n >= 0) {
 116                         if (c == iso8859_15_ucs_table[n]) {
 117                                 s = 0xa0 + n;
 118                                 break;
 119                         }
 120                         n--;
 121                 }
 122                 if (s <= 0 && (c & ~MBFL_WCSPLANE_MASK) == MBFL_WCSPLANE_8859_15) {
 123                         s = c & MBFL_WCSPLANE_MASK;
 124                 }
 125         }
 126 
 127         if (s >= 0) {
 128                 CK((*filter->output_function)(s, filter->data));
 129         } else {
 130                 if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
 131                         CK(mbfl_filt_conv_illegal_output(c, filter));
 132                 }
 133         }
 134 
 135         return c;
 136 }