text: /*
   * "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 int mbfl_filt_conv_utf8_wchar_flush(mbfl_convert_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,
  	&vtbl_utf8_docomo_wchar,
  	&vtbl_wchar_utf8_docomo
  };
  
  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,
  	&vtbl_utf8_kddi_a_wchar,
  	&vtbl_wchar_utf8_kddi_a
  };
  
  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,
  	&vtbl_utf8_kddi_b_wchar,
  	&vtbl_wchar_utf8_kddi_b
  };
  
  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,
  	&vtbl_utf8_sb_wchar,
  	&vtbl_wchar_utf8_sb
  };
  
  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_utf8_wchar_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_utf8_wchar_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_utf8_wchar_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_utf8_wchar_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)
  int mbfl_filt_put_invalid_char(int c, mbfl_convert_filter *filter);
  
  /*
   * UTF-8 => wchar
   */
  int mbfl_filt_conv_utf8_mobile_wchar(int c, mbfl_convert_filter *filter)
  {
  	int s, s1 = 0, c1 = 0, snd = 0;
  
  retry:
  	switch (filter->status & 0xff) {
  	case 0x00:
  		if (c < 0x80) {
  			CK((*filter->output_function)(c, filter->data));
  		} else if (c >= 0xc2 && c <= 0xdf) { /* 2byte code first char: 0xc2-0xdf */
  			filter->status = 0x10;
  			filter->cache = c & 0x1f;
  		} else if (c >= 0xe0 && c <= 0xef) { /* 3byte code first char: 0xe0-0xef */
  			filter->status = 0x20;
  			filter->cache = c & 0xf;
  		} else if (c >= 0xf0 && c <= 0xf4) { /* 3byte code first char: 0xf0-0xf4 */
  			filter->status = 0x30;
  			filter->cache = c & 0x7;
  		} else {
  			CK(mbfl_filt_put_invalid_char(c, filter));
  		}
  		break;
  	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;
  		if (c >= 0x80 && c <= 0xbf) {
  			s = (filter->cache<<6) | (c & 0x3f);
  			filter->cache = 0;
  
  			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 {
  			CK(mbfl_filt_put_invalid_char(filter->cache, filter));
  			goto retry;
  		}
  		break;
  	case 0x20: /* 3byte code 2nd char: 0:0xa0-0xbf,D:0x80-9F,1-C,E-F:0x80-0x9f */
  		s = (filter->cache<<6) | (c & 0x3f);
  		c1 = filter->cache & 0xf;
  
  		if ((c >= 0x80 && c <= 0xbf) &&
  			((c1 == 0x0 && c >= 0xa0) ||
  			 (c1 == 0xd && c < 0xa0) ||
  			 (c1 > 0x0 && c1 != 0xd))) {
  			filter->cache = s;
  			filter->status++;
  		} else {
  			CK(mbfl_filt_put_invalid_char(filter->cache, filter));
  			goto retry;
  		}
  		break;
  	case 0x30: /* 4byte code 2nd char: 0:0x90-0xbf,1-3:0x80-0xbf,4:0x80-0x8f */
  		s = (filter->cache<<6) | (c & 0x3f);
  		c1 = filter->cache & 0x7;
  
  		if ((c >= 0x80 && c <= 0xbf) &&
  			((c1 == 0x0 && c >= 0x90) ||
  			 (c1 == 0x4 && c < 0x90) ||
  			 (c1 > 0x0 && c1 != 0x4))) {
  			filter->cache = s;
  			filter->status++;
  		} else {
  			CK(mbfl_filt_put_invalid_char(filter->cache, filter));
  			goto retry;
  		}
  		break;
  	case 0x31: /* 4byte code 3rd char: 0x80-0xbf */
  		if (c >= 0x80 && c <= 0xbf) {
  			filter->cache = (filter->cache<<6) | (c & 0x3f);
  			filter->status++;
  		} else {
  			CK(mbfl_filt_put_invalid_char(filter->cache, filter));
  			goto retry;
  		}
  		break;
  	default:
  		filter->status = 0;
  		break;
  	}
  
  	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;
  }
  