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php5  5.3.10
mbfilter_iso8859_5.c
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00001 /*
00002  * "streamable kanji code filter and converter"
00003  * Copyright (c) 1998-2002 HappySize, Inc. All rights reserved.
00004  *
00005  * LICENSE NOTICES
00006  *
00007  * This file is part of "streamable kanji code filter and converter",
00008  * which is distributed under the terms of GNU Lesser General Public 
00009  * License (version 2) as published by the Free Software Foundation.
00010  *
00011  * This software is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with "streamable kanji code filter and converter";
00018  * if not, write to the Free Software Foundation, Inc., 59 Temple Place,
00019  * Suite 330, Boston, MA  02111-1307  USA
00020  *
00021  * The author of this file:
00022  *
00023  */
00024 /*
00025  * The source code included in this files was separated from mbfilter.c
00026  * by moriyoshi koizumi <moriyoshi@php.net> on 4 dec 2002.
00027  * 
00028  */
00029 
00030 #ifdef HAVE_CONFIG_H
00031 #include "config.h"
00032 #endif
00033 
00034 #include "mbfilter.h"
00035 #include "mbfilter_iso8859_5.h"
00036 #include "unicode_table_iso8859_5.h"
00037 
00038 static const char *mbfl_encoding_8859_5_aliases[] = {"ISO_8859-5", "cyrillic", NULL};
00039 
00040 const mbfl_encoding mbfl_encoding_8859_5 = {
00041        mbfl_no_encoding_8859_5,
00042        "ISO-8859-5",
00043        "ISO-8859-5",
00044        (const char *(*)[])&mbfl_encoding_8859_5_aliases,
00045        NULL,
00046        MBFL_ENCTYPE_SBCS
00047 };
00048 
00049 const struct mbfl_identify_vtbl vtbl_identify_8859_5 = {
00050        mbfl_no_encoding_8859_5,
00051        mbfl_filt_ident_common_ctor,
00052        mbfl_filt_ident_common_dtor,
00053        mbfl_filt_ident_true
00054 };
00055 
00056 const struct mbfl_convert_vtbl vtbl_8859_5_wchar = {
00057        mbfl_no_encoding_8859_5,
00058        mbfl_no_encoding_wchar,
00059        mbfl_filt_conv_common_ctor,
00060        mbfl_filt_conv_common_dtor,
00061        mbfl_filt_conv_8859_5_wchar,
00062        mbfl_filt_conv_common_flush
00063 };
00064 
00065 const struct mbfl_convert_vtbl vtbl_wchar_8859_5 = {
00066        mbfl_no_encoding_wchar,
00067        mbfl_no_encoding_8859_5,
00068        mbfl_filt_conv_common_ctor,
00069        mbfl_filt_conv_common_dtor,
00070        mbfl_filt_conv_wchar_8859_5,
00071        mbfl_filt_conv_common_flush
00072 };
00073 
00074 
00075 #define CK(statement)       do { if ((statement) < 0) return (-1); } while (0)
00076 
00077 /*
00078  * ISO-8859-5 => wchar
00079  */
00080 int mbfl_filt_conv_8859_5_wchar(int c, mbfl_convert_filter *filter)
00081 {
00082        int s;
00083 
00084        if (c >= 0 && c < 0xa0) {
00085               s = c;
00086        } else if (c >= 0xa0 && c < 0x100) {
00087               s = iso8859_5_ucs_table[c - 0xa0];
00088               if (s <= 0) {
00089                      s = c;
00090                      s &= MBFL_WCSPLANE_MASK;
00091                      s |= MBFL_WCSPLANE_8859_5;
00092               }
00093        } else {
00094               s = c;
00095               s &= MBFL_WCSGROUP_MASK;
00096               s |= MBFL_WCSGROUP_THROUGH;
00097        }
00098 
00099        CK((*filter->output_function)(s, filter->data));
00100 
00101        return c;
00102 }
00103 
00104 /*
00105  * wchar => ISO-8859-5
00106  */
00107 int mbfl_filt_conv_wchar_8859_5(int c, mbfl_convert_filter *filter)
00108 {
00109        int s, n;
00110 
00111        if (c >= 0 && c < 0xa0) {
00112               s = c;
00113        } else {
00114               s = -1;
00115               n = 95;
00116               while (n >= 0) {
00117                      if (c == iso8859_5_ucs_table[n]) {
00118                             s = 0xa0 + n;
00119                             break;
00120                      }
00121                      n--;
00122               }
00123               if (s <= 0 && (c & ~MBFL_WCSPLANE_MASK) == MBFL_WCSPLANE_8859_5) {
00124                      s = c & MBFL_WCSPLANE_MASK;
00125               }
00126        }
00127 
00128        if (s >= 0) {
00129               CK((*filter->output_function)(s, filter->data));
00130        } else {
00131               if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
00132                      CK(mbfl_filt_conv_illegal_output(c, filter));
00133               }
00134        }
00135 
00136        return c;
00137 }
00138 
00139