root/mbstring/libmbfl/filters/mbfilter_utf8_mobile.c

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DEFINITIONS

This source file includes following definitions.
  1. mbfl_filt_conv_utf8_mobile_wchar
  2. mbfl_filt_conv_wchar_utf8_mobile

/*
 * "streamable kanji code filter and converter"
 * Copyright (c) 1998-2002 HappySize, Inc. All rights reserved.
 *
 * LICENSE NOTICES
 *
 * This file is part of "streamable kanji code filter and converter",
 * which is distributed under the terms of GNU Lesser General Public 
 * License (version 2) as published by the Free Software Foundation.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with "streamable kanji code filter and converter";
 * if not, write to the Free Software Foundation, Inc., 59 Temple Place,
 * Suite 330, Boston, MA  02111-1307  USA
 *
 * The author of this file:
 *
 */
/*
 * The source code included in this files was separated from mbfilter.c
 * by rui hrokawa <hirokawa@php.net> on 8 aug 2011.
 * 
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "mbfilter.h"

#include "mbfilter_utf8_mobile.h"
#include "mbfilter_sjis_mobile.h"

extern int mbfl_filt_ident_utf8(int c, mbfl_identify_filter *filter);

extern const unsigned char mblen_table_utf8[];

static const char *mbfl_encoding_utf8_docomo_aliases[] = {"UTF-8-DOCOMO", "UTF8-DOCOMO", NULL};
static const char *mbfl_encoding_utf8_kddi_a_aliases[] = {NULL};
static const char *mbfl_encoding_utf8_kddi_b_aliases[] = {"UTF-8-Mobile#KDDI", "UTF-8-KDDI", "UTF8-KDDI", NULL};
static const char *mbfl_encoding_utf8_sb_aliases[] = {"UTF-8-SOFTBANK", "UTF8-SOFTBANK", NULL};

const mbfl_encoding mbfl_encoding_utf8_docomo = {
        mbfl_no_encoding_utf8_docomo,
        "UTF-8-Mobile#DOCOMO",
        "UTF-8",
        (const char *(*)[])&mbfl_encoding_utf8_docomo_aliases,
        mblen_table_utf8,
        MBFL_ENCTYPE_MBCS
};

const mbfl_encoding mbfl_encoding_utf8_kddi_a = {
        mbfl_no_encoding_utf8_kddi_a,
        "UTF-8-Mobile#KDDI-A",
        "UTF-8",
        (const char *(*)[])&mbfl_encoding_utf8_kddi_a_aliases,
        mblen_table_utf8,
        MBFL_ENCTYPE_MBCS
};

const mbfl_encoding mbfl_encoding_utf8_kddi_b = {
        mbfl_no_encoding_utf8_kddi_b,
        "UTF-8-Mobile#KDDI-B",
        "UTF-8",
        (const char *(*)[])&mbfl_encoding_utf8_kddi_b_aliases,
        mblen_table_utf8,
        MBFL_ENCTYPE_MBCS
};

const mbfl_encoding mbfl_encoding_utf8_sb = {
        mbfl_no_encoding_utf8_sb,
        "UTF-8-Mobile#SOFTBANK",
        "UTF-8",
        (const char *(*)[])&mbfl_encoding_utf8_sb_aliases,
        mblen_table_utf8,
        MBFL_ENCTYPE_MBCS
};

const struct mbfl_identify_vtbl vtbl_identify_utf8_docomo = {
        mbfl_no_encoding_utf8_docomo,
        mbfl_filt_ident_common_ctor,
        mbfl_filt_ident_common_dtor,
        mbfl_filt_ident_utf8
};

const struct mbfl_identify_vtbl vtbl_identify_utf8_kddi_a = {
        mbfl_no_encoding_utf8_kddi_a,
        mbfl_filt_ident_common_ctor,
        mbfl_filt_ident_common_dtor,
        mbfl_filt_ident_utf8
};

const struct mbfl_identify_vtbl vtbl_identify_utf8_kddi_b = {
        mbfl_no_encoding_utf8_kddi_b,
        mbfl_filt_ident_common_ctor,
        mbfl_filt_ident_common_dtor,
        mbfl_filt_ident_utf8
};

const struct mbfl_identify_vtbl vtbl_identify_utf8_sb = {
        mbfl_no_encoding_utf8_sb,
        mbfl_filt_ident_common_ctor,
        mbfl_filt_ident_common_dtor,
        mbfl_filt_ident_utf8
};

const struct mbfl_convert_vtbl vtbl_utf8_docomo_wchar = {
        mbfl_no_encoding_utf8_docomo,
        mbfl_no_encoding_wchar,
        mbfl_filt_conv_common_ctor,
        mbfl_filt_conv_common_dtor,
        mbfl_filt_conv_utf8_mobile_wchar,
        mbfl_filt_conv_common_flush
};

const struct mbfl_convert_vtbl vtbl_wchar_utf8_docomo = {
        mbfl_no_encoding_wchar,
        mbfl_no_encoding_utf8_docomo,
        mbfl_filt_conv_common_ctor,
        mbfl_filt_conv_common_dtor,
        mbfl_filt_conv_wchar_utf8_mobile,
        mbfl_filt_conv_common_flush
};

const struct mbfl_convert_vtbl vtbl_utf8_kddi_a_wchar = {
        mbfl_no_encoding_utf8_kddi_a,
        mbfl_no_encoding_wchar,
        mbfl_filt_conv_common_ctor,
        mbfl_filt_conv_common_dtor,
        mbfl_filt_conv_utf8_mobile_wchar,
        mbfl_filt_conv_common_flush
};

const struct mbfl_convert_vtbl vtbl_wchar_utf8_kddi_a = {
        mbfl_no_encoding_wchar,
        mbfl_no_encoding_utf8_kddi_a,
        mbfl_filt_conv_common_ctor,
        mbfl_filt_conv_common_dtor,
        mbfl_filt_conv_wchar_utf8_mobile,
        mbfl_filt_conv_common_flush
};

const struct mbfl_convert_vtbl vtbl_utf8_kddi_b_wchar = {
        mbfl_no_encoding_utf8_kddi_b,
        mbfl_no_encoding_wchar,
        mbfl_filt_conv_common_ctor,
        mbfl_filt_conv_common_dtor,
        mbfl_filt_conv_utf8_mobile_wchar,
        mbfl_filt_conv_common_flush
};

const struct mbfl_convert_vtbl vtbl_wchar_utf8_kddi_b = {
        mbfl_no_encoding_wchar,
        mbfl_no_encoding_utf8_kddi_b,
        mbfl_filt_conv_common_ctor,
        mbfl_filt_conv_common_dtor,
        mbfl_filt_conv_wchar_utf8_mobile,
        mbfl_filt_conv_common_flush
};

const struct mbfl_convert_vtbl vtbl_utf8_sb_wchar = {
        mbfl_no_encoding_utf8_sb,
        mbfl_no_encoding_wchar,
        mbfl_filt_conv_common_ctor,
        mbfl_filt_conv_common_dtor,
        mbfl_filt_conv_utf8_mobile_wchar,
        mbfl_filt_conv_common_flush
};

const struct mbfl_convert_vtbl vtbl_wchar_utf8_sb = {
        mbfl_no_encoding_wchar,
        mbfl_no_encoding_utf8_sb,
        mbfl_filt_conv_common_ctor,
        mbfl_filt_conv_common_dtor,
        mbfl_filt_conv_wchar_utf8_mobile,
        mbfl_filt_conv_common_flush
};

#define CK(statement)   do { if ((statement) < 0) return (-1); } while (0)

/*
 * UTF-8 => wchar
 */
int mbfl_filt_conv_utf8_mobile_wchar(int c, mbfl_convert_filter *filter)
{
        int s, w = 0, flag = 0;
        int s1 = 0, c1 = 0, snd = 0;

        if (c < 0x80) {
                if (c >= 0) {
                        CK((*filter->output_function)(c, filter->data));
                }
                filter->status = 0;
        } else if (c < 0xc0) {
                int status = filter->status & 0xff;
                switch (status) {
                case 0x10: /* 2byte code 2nd char: 0x80-0xbf */
                case 0x21: /* 3byte code 3rd char: 0x80-0xbf */
                case 0x32: /* 4byte code 4th char: 0x80-0xbf */
                        filter->status = 0;
                        s = filter->cache | (c & 0x3f);
                        filter->cache = 0;
                        if ((status == 0x10 && s >= 0x80) ||
                            (status == 0x21 && s >= 0x800 && (s < 0xd800 || s > 0xdfff)) ||
                            (status == 0x32 && s >= 0x10000 && s < 0x110000)) {
                                
                                if (filter->from->no_encoding == mbfl_no_encoding_utf8_docomo &&
                                        mbfilter_conv_r_map_tbl(s, &s1, mbfl_docomo2uni_pua, 4) > 0) {
                                        s = mbfilter_sjis_emoji_docomo2unicode(s1, &snd);
                                } else if (filter->from->no_encoding == mbfl_no_encoding_utf8_kddi_a &&
                                                   mbfilter_conv_r_map_tbl(s, &s1, mbfl_kddi2uni_pua, 7) > 0) {
                                        s = mbfilter_sjis_emoji_kddi2unicode(s1, &snd);
                                } else if (filter->from->no_encoding == mbfl_no_encoding_utf8_kddi_b &&
                                                   mbfilter_conv_r_map_tbl(s, &s1, mbfl_kddi2uni_pua_b, 8) > 0) {
                                        s = mbfilter_sjis_emoji_kddi2unicode(s1, &snd);
                                } else if (filter->from->no_encoding == mbfl_no_encoding_utf8_sb &&
                                                   mbfilter_conv_r_map_tbl(s, &s1, mbfl_sb2uni_pua, 6) > 0) {
                                        s = mbfilter_sjis_emoji_sb2unicode(s1, &snd);
                                }

                                if (snd > 0) {
                                        CK((*filter->output_function)(snd, filter->data));
                                }
                                CK((*filter->output_function)(s, filter->data));
                        } else {
                                w = s & MBFL_WCSGROUP_MASK;
                                flag = 1;
                        }
                        break;
                case 0x20: /* 3byte code 2nd char: 0:0xa0-0xbf,D:0x80-9F,1-C,E-F:0x80-0x9f */
                        s = filter->cache | ((c & 0x3f) << 6);
                        c1 = (s >> 12) & 0xf;
                        if ((c1 == 0x0 && c >= 0xa0) || 
                                (c1 == 0xd && c < 0xa0) || 
                                (c1 > 0x0 && c1 != 0xd)) {
                                filter->cache = s;
                                filter->status++;
                        } else {
                                w = s & MBFL_WCSGROUP_MASK;
                                flag = 1;
                        }
                        break;
                case 0x31: /* 4byte code 3rd char: 0x80-0xbf */
                        filter->cache |= ((c & 0x3f) << 6);
                        filter->status++;
                        break;
                case 0x30: /* 4byte code 2nd char: 0:0x90-0xbf,1-3:0x80-0xbf,4:0x80-0x8f */
                        s = filter->cache | ((c & 0x3f) << 12);
                        c1 = (s >> 18) & 0x7;
                        if ((c1 == 0x0 && c >= 0x90) ||
                                (c1 > 0x0 && c1 < 0x4) ||
                                (c1 == 0x4 && c < 0x90)) {
                                filter->cache = s;
                                filter->status++;
                        } else {
                                w = s & MBFL_WCSGROUP_MASK;
                                flag = 1;
                        }
                        break;
                default:
                        w = c & MBFL_WCSGROUP_MASK;
                        flag = 1;
                        break;
                }
        } else if (c < 0xc2) { /* invalid: 0xc0,0xc1 */
                w = c & MBFL_WCSGROUP_MASK;
                flag = 1;
        } else if (c < 0xe0) { /* 2byte code first char: 0xc2-0xdf */
                if (filter->status == 0x0) {
                        filter->status = 0x10;
                        filter->cache = (c & 0x1f) << 6;
                } else {
                        w = c & MBFL_WCSGROUP_MASK;
                        flag = 1;
                }
        } else if (c < 0xf0) { /* 3byte code first char: 0xe0-0xef */
                if (filter->status == 0x0) {
                        filter->status = 0x20;
                        filter->cache = (c & 0xf) << 12;
                } else {
                        w = c & MBFL_WCSGROUP_MASK;
                        flag = 1;
                }
        } else if (c < 0xf5) { /* 4byte code first char: 0xf0-0xf4 */
                if (filter->status == 0x0) {
                        filter->status = 0x30;
                        filter->cache = (c & 0x7) << 18;
                } else {
                        w = c & MBFL_WCSGROUP_MASK;
                        flag = 1;
                }
        } else {
                w = c & MBFL_WCSGROUP_MASK;
                flag = 1;
        }

        if (flag) {
                w |= MBFL_WCSGROUP_THROUGH;
                CK((*filter->output_function)(w, filter->data));
                filter->status = 0;
                filter->cache = 0;
        }

        return c;
}

/*
 * wchar => UTF-8
 */
int mbfl_filt_conv_wchar_utf8_mobile(int c, mbfl_convert_filter *filter)
{
        if (c >= 0 && c < 0x110000) {
                int s1, c1;

                if ((filter->to->no_encoding == mbfl_no_encoding_utf8_docomo &&
                         mbfilter_unicode2sjis_emoji_docomo(c, &s1, filter) > 0 &&
                         mbfilter_conv_map_tbl(s1, &c1, mbfl_docomo2uni_pua, 4) > 0) || 
                        (filter->to->no_encoding == mbfl_no_encoding_utf8_kddi_a &&
                         mbfilter_unicode2sjis_emoji_kddi(c, &s1, filter) > 0 &&
                         mbfilter_conv_map_tbl(s1, &c1, mbfl_kddi2uni_pua, 7) > 0) ||
                        (filter->to->no_encoding == mbfl_no_encoding_utf8_kddi_b &&
                         mbfilter_unicode2sjis_emoji_kddi(c, &s1, filter) > 0 &&
                         mbfilter_conv_map_tbl(s1, &c1, mbfl_kddi2uni_pua_b, 8) > 0) ||
                        (filter->to->no_encoding == mbfl_no_encoding_utf8_sb &&
                         mbfilter_unicode2sjis_emoji_sb(c, &s1, filter) > 0 &&
                         mbfilter_conv_map_tbl(s1, &c1, mbfl_sb2uni_pua, 6) > 0)) {
                        c = c1;
                }

                if (filter->status == 1 && filter->cache > 0) {
                        return c;
                }

                if (c < 0x80) {
                        CK((*filter->output_function)(c, filter->data));
                } else if (c < 0x800) {
                        CK((*filter->output_function)(((c >> 6) & 0x1f) | 0xc0, filter->data));
                        CK((*filter->output_function)((c & 0x3f) | 0x80, filter->data));
                } else if (c < 0x10000) {
                        CK((*filter->output_function)(((c >> 12) & 0x0f) | 0xe0, filter->data));
                        CK((*filter->output_function)(((c >> 6) & 0x3f) | 0x80, filter->data));
                        CK((*filter->output_function)((c & 0x3f) | 0x80, filter->data));
                } else {
                        CK((*filter->output_function)(((c >> 18) & 0x07) | 0xf0, filter->data));
                        CK((*filter->output_function)(((c >> 12) & 0x3f) | 0x80, filter->data));
                        CK((*filter->output_function)(((c >> 6) & 0x3f) | 0x80, filter->data));
                        CK((*filter->output_function)((c & 0x3f) | 0x80, filter->data));
                }
        } else {
                if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
                        CK(mbfl_filt_conv_illegal_output(c, filter));
                }
        }

        return c;
}


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