rxvt-unicode/src/encoding.C

/*--------------------------------*-C-*---------------------------------*
 * File:        encoding.C
 *----------------------------------------------------------------------*
 *
 * All portions of code are copyright by their respective author/s.
 * Copyright (c) 2003-2004 Marc Lehmann <pcg@goof.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *----------------------------------------------------------------------*/

#include "../config.h"

#include "encoding.h"

#include <cstdlib>
#include <cstring>

const struct n2cs {
  const char *name;
  codeset cs;
} n2cs[] = {
  /* first one found is the normalized one */
  { "ISO88591",         CS_ISO8859_1        },
  { "ISO8859PRIMARY",   CS_ISO8859_1        }, // some stupid fonts use this (hi tigert)
  { "ISO88592",         CS_ISO8859_2        },
  { "ISO88593",         CS_ISO8859_3        },
  { "ISO88594",         CS_ISO8859_4        },
  { "ISO88595",         CS_ISO8859_5        },
  { "ISO88596",         CS_ISO8859_6        },
  { "ISO88597",         CS_ISO8859_7        },
  { "ISO88598",         CS_ISO8859_8        },
  { "ISO88599",         CS_ISO8859_9        },
  { "ISO885910",        CS_ISO8859_10       },
  { "ISO885911",        CS_ISO8859_11       },
  { "ISO885913",        CS_ISO8859_13       },
  { "ISO885914",        CS_ISO8859_14       },
  { "ISO885915",        CS_ISO8859_15       },
  { "FCD885915",        CS_ISO8859_15       },
  { "ISO885916",        CS_ISO8859_16       },
                                            
  { "TIS620*",          CS_ISO8859_11       }, // close enough

  { "ISO10646*",        CS_UNICODE          },
  { "UNICODE",          CS_UNICODE          },
  { "UTF8",             CS_UNICODE          },
                                            
  { "ASCII",            CS_US_ASCII         },
  { "USASCII",          CS_US_ASCII         },
  { "ANSIX341968",      CS_US_ASCII         },
                                            
  { "KOI8R*",           CS_KOI8_R           },
  { "GOST1976874*",     CS_KOI8_R           },
  { "KOI8RU",           CS_KOI8_U           },
  { "KOI8U",            CS_KOI8_U           },

  { "VISCII*",          CS_VISCII           },
                                            
  { "JISX0201*",        CS_JIS0201_1976_0   },
  { "JISC6226*",        CS_JIS0208_1990_0   }, // also wrongly matches -1987-0? (check Encode::JP)
  { "JISX0208*",        CS_JIS0208_1990_0   }, // also wrongly matches -1987-0? (check Encode::JP)
  { "JISX0212*",        CS_JIS0212_1990_0   },
  { "JISX021320001",    CS_JIS0213_1        },
  { "JISX021320002",    CS_JIS0213_2        },
  { "JISX0221*",        CS_UNICODE          }, // _very_ close
                                            
  { "KSC5601*",         CS_KSC5601_1987_0   },
  { "KSX1001*",         CS_KSC5601_1987_0   },
  { "KSC5700*",         CS_UNICODE          }, // unicode plus extensions
                                            
  { "BIG5P*",           CS_BIG5_PLUS        },
  { "BIG5ETEN*",        CS_BIG5_EXT         },
  { "BIG5*",            CS_BIG5             },
  { "GB2312*",          CS_GB2312_1980_0    },
  { "GBK*",             CS_GBK_0            },
  { "GB6345*",          CS_GB2312_1980_0    }, // slightly different to gb2312??
  { "GB8565*",          CS_GB2312_1980_0    }, // a superset of gb2312??
  { "GB13000*",         CS_UNICODE          },
  { "CNS1164319921",    CS_CNS11643_1992_1  },
  { "CNS1164319922",    CS_CNS11643_1992_2  },
  { "CNS1164319923",    CS_CNS11643_1992_3  },
  { "CNS1164319924",    CS_CNS11643_1992_4  },
  { "CNS1164319925",    CS_CNS11643_1992_5  },
  { "CNS1164319926",    CS_CNS11643_1992_6  },
  { "CNS1164319927",    CS_CNS11643_1992_7  },
  { "CNS116431992F",    CS_CNS11643_1992_F  },

  { 0,                  CS_UNKNOWN      }
};

static const char *
normalize_name (const char *name)
{
  static char res[16];
  char *r;

  for (r = res; *name && r < res + 15; name++)
    if ((*name >= '0' && *name <= '9')
        || (*name >= 'A' && *name <= 'Z'))
      *r++ = *name;
    else if (*name >= 'a' && *name <= 'z')
      *r++ = *name - ('a' - 'A');

  *r = 0;

  return res;
}

codeset
codeset_from_name (const char *name)
{
  if (!name)
    return CS_UNKNOWN;

  name = normalize_name (name);

  const struct n2cs *i = n2cs;

  do {
    int len = strlen (i->name);

    if ((i->name[len - 1] == '*'
         && !strncmp (name, i->name, len - 1))
        || !strcmp (name, i->name))
        return i->cs;

  } while ((++i)->name);

  return CS_UNKNOWN;
}

static unicode_t cs_unknown_to_unicode (uint32_t enc)          { return NOCHAR; }
static uint32_t cs_unknown_from_unicode (unicode_t unicode)    { return NOCHAR; }

static unicode_t cs_unicode_to_unicode (uint32_t enc)          { return enc; }
static uint32_t cs_unicode_from_unicode (unicode_t unicode)    { return unicode; }

#define cs_us_ascii_to_unicode cs_unicode_to_unicode
static uint32_t cs_us_ascii_from_unicode (unicode_t unicode)   { return unicode <= 127 ? unicode : NOCHAR; }

#define cs_us_ascii_to_unicode_16 cs_unicode_to_unicode
static uint32_t cs_unicode_16_from_unicode (unicode_t unicode) { return unicode <= 65535 ? unicode : NOCHAR; }

#define ENCODING_DEFAULT

#include "table/iso8859_1.h"
#include "table/iso8859_15.h"

//#define ENCODING_EU

#include "table/iso8859_2.h"
#include "table/iso8859_3.h"
#include "table/iso8859_4.h"
#include "table/iso8859_5.h"
#include "table/iso8859_6.h"
#include "table/iso8859_7.h"
#include "table/iso8859_8.h"
#include "table/iso8859_9.h"
#include "table/iso8859_10.h"
#include "table/iso8859_11.h"
#include "table/iso8859_13.h"
#include "table/iso8859_14.h"
#include "table/iso8859_16.h"

#include "table/koi8_r.h"
#include "table/koi8_u.h"

//#define ENCODING_KR

#include "table/ksc5601_1987_0.h"

//#define ENCODING_ZH

#include "table/big5.h"
#include "table/gbk_0.h"
#include "table/gb2312_1980_0.h"

//#define ENCODING_ZH_EXT

#include "table/cns11643_1992_1.h"
#include "table/cns11643_1992_2.h"
#include "table/cns11643_1992_3.h"
#include "table/cns11643_1992_4.h"
#include "table/cns11643_1992_5.h"
#include "table/cns11643_1992_6.h"
#include "table/cns11643_1992_7.h"
#include "table/cns11643_1992_f.h"
#include "table/big5_ext.h"
#include "table/big5_plus.h"

//#define ENCODING_VN

#include "table/viscii.h"

//#define ENCODING_JP

#include "table/jis0201_1976_0.h"
#include "table/jis0208_1990_0.h"
#include "table/jis0212_1990_0.h"

//#define ENCODING_JP_EXT

#include "table/jis0213_1.h"
#include "table/jis0213_2.h"

#if ENCODING_TO_UNICODE
# define ENC(base) { cs_ ## base ## _from_unicode, cs_ ## base ## _to_unicode }
#else
# define ENC(base) { cs_ ## base ## _from_unicode }
#endif
  

// order must match table in encoding.h(!)
const rxvt_codeset_conv rxvt_codeset[NUM_CODESETS] = {
  ENC (unknown),

  ENC (us_ascii),

  ENC (iso8859_1),
  ENC (iso8859_2),
  ENC (iso8859_3),
  ENC (iso8859_4),
  ENC (iso8859_5),
  ENC (iso8859_6),
  ENC (iso8859_7),
  ENC (iso8859_8),
  ENC (iso8859_9),
  ENC (iso8859_10),
  ENC (iso8859_11),
  ENC (iso8859_13),
  ENC (iso8859_14),
  ENC (iso8859_15),
  ENC (iso8859_16),

  ENC (koi8_r),
  ENC (koi8_u),

  ENC (jis0201_1976_0),
  ENC (jis0208_1990_0),
  ENC (jis0212_1990_0),

  ENC (jis0213_1),
  ENC (jis0213_2),

  ENC (ksc5601_1987_0),

  ENC (gb2312_1980_0),
  ENC (gbk_0),

  ENC (cns11643_1992_1),
  ENC (cns11643_1992_2),
  ENC (cns11643_1992_3),
  ENC (cns11643_1992_4),
  ENC (cns11643_1992_5),
  ENC (cns11643_1992_6),
  ENC (cns11643_1992_7),
  ENC (cns11643_1992_f),
  ENC (big5),
  ENC (big5_ext),
  ENC (big5_plus),

  ENC (viscii),

  ENC (unicode_16),
  ENC (unicode),
};

#if ENABLE_COMBINING
# define ENCODING_COMPOSE
#endif

#include "table/compose.h"

unicode_t
rxvt_compose (unicode_t c1, unicode_t c2)
{
  int l = 0;
  int r = sizeof (rxvt_compose_table) / sizeof (rxvt_compose_entry) - 1;
  int m;

  while (r > l)
    {
      m = (l + r) / 2;
      rxvt_compose_entry &c = rxvt_compose_table[m];

      if (c.c1 < c1 || (c.c1 == c1 && c.c2 < c2))
        l = m + 1;
      else if (c.c1 > c1 || (c.c1 == c1 && c.c2 > c2))
        r = m - 1;
      else
        return c.r;
    }

  return NOCHAR;
}

#include "table/category.h"

bool unicode::is_space (unicode_t c)
{
  return IS_SPACE (c)
         || c == 0x09; // exclude tabs, too, as we store them in the buffer
}
Revision:	1.22
Committed:	Thu Sep 15 21:13:39 2005 UTC (18 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-6_2, rel-6_3, rel-6_0, rel-6_1, rel-7_3a, rel-7_3, rel-7_2, rel-7_1, rel-7_0, rel-7_5, rel-7_4, rel-5_9, rel-5_8
Changes since 1.21:	+1 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.16	/---------------------------------C----------------------------------
2			* File: encoding.C
3			----------------------------------------------------------------------
4			*
5			* All portions of code are copyright by their respective author/s.
6			* Copyright (c) 2003-2004 Marc Lehmann <pcg@goof.com>
7			*
8			* This program is free software; you can redistribute it and/or modify
9			* it under the terms of the GNU General Public License as published by
10			* the Free Software Foundation; either version 2 of the License, or
11			* (at your option) any later version.
12			*
13			* This program is distributed in the hope that it will be useful,
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16			* GNU General Public License for more details.
17			*
18			* You should have received a copy of the GNU General Public License
19			* along with this program; if not, write to the Free Software
20			* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21			----------------------------------------------------------------------/
22
23	pcg	1.1	#include "../config.h"
24
25			#include "encoding.h"
26
27			#include <cstdlib>
28			#include <cstring>
29
30			const struct n2cs {
31			const char *name;
32			codeset cs;
33			} n2cs[] = {
34			/* first one found is the normalized one */
35	pcg	1.3	{ "ISO88591", CS_ISO8859_1 },
36			{ "ISO8859PRIMARY", CS_ISO8859_1 }, // some stupid fonts use this (hi tigert)
37			{ "ISO88592", CS_ISO8859_2 },
38			{ "ISO88593", CS_ISO8859_3 },
39			{ "ISO88594", CS_ISO8859_4 },
40			{ "ISO88595", CS_ISO8859_5 },
41			{ "ISO88596", CS_ISO8859_6 },
42			{ "ISO88597", CS_ISO8859_7 },
43			{ "ISO88598", CS_ISO8859_8 },
44			{ "ISO88599", CS_ISO8859_9 },
45			{ "ISO885910", CS_ISO8859_10 },
46			{ "ISO885911", CS_ISO8859_11 },
47			{ "ISO885913", CS_ISO8859_13 },
48			{ "ISO885914", CS_ISO8859_14 },
49			{ "ISO885915", CS_ISO8859_15 },
50			{ "FCD885915", CS_ISO8859_15 },
51			{ "ISO885916", CS_ISO8859_16 },
52
53	pcg	1.9	{ "TIS620*", CS_ISO8859_11 }, // close enough
54
55	pcg	1.3	{ "ISO10646*", CS_UNICODE },
56			{ "UNICODE", CS_UNICODE },
57			{ "UTF8", CS_UNICODE },
58
59			{ "ASCII", CS_US_ASCII },
60			{ "USASCII", CS_US_ASCII },
61			{ "ANSIX341968", CS_US_ASCII },
62
63	root	1.22	{ "KOI8R*", CS_KOI8_R },
64	pcg	1.3	{ "GOST1976874*", CS_KOI8_R },
65			{ "KOI8RU", CS_KOI8_U },
66			{ "KOI8U", CS_KOI8_U },
67
68			{ "VISCII*", CS_VISCII },
69
70			{ "JISX0201*", CS_JIS0201_1976_0 },
71	root	1.17	{ "JISC6226*", CS_JIS0208_1990_0 }, // also wrongly matches -1987-0? (check Encode::JP)
72	pcg	1.15	{ "JISX0208*", CS_JIS0208_1990_0 }, // also wrongly matches -1987-0? (check Encode::JP)
73	pcg	1.3	{ "JISX0212*", CS_JIS0212_1990_0 },
74	pcg	1.15	{ "JISX021320001", CS_JIS0213_1 },
75			{ "JISX021320002", CS_JIS0213_2 },
76			{ "JISX0221*", CS_UNICODE }, // _very_ close
77	pcg	1.3
78			{ "KSC5601*", CS_KSC5601_1987_0 },
79			{ "KSX1001*", CS_KSC5601_1987_0 },
80			{ "KSC5700*", CS_UNICODE }, // unicode plus extensions
81
82			{ "BIG5P*", CS_BIG5_PLUS },
83			{ "BIG5ETEN*", CS_BIG5_EXT },
84			{ "BIG5*", CS_BIG5 },
85			{ "GB2312*", CS_GB2312_1980_0 },
86	root	1.21	{ "GBK*", CS_GBK_0 },
87	pcg	1.3	{ "GB6345*", CS_GB2312_1980_0 }, // slightly different to gb2312??
88			{ "GB8565*", CS_GB2312_1980_0 }, // a superset of gb2312??
89			{ "GB13000*", CS_UNICODE },
90			{ "CNS1164319921", CS_CNS11643_1992_1 },
91			{ "CNS1164319922", CS_CNS11643_1992_2 },
92			{ "CNS1164319923", CS_CNS11643_1992_3 },
93			{ "CNS1164319924", CS_CNS11643_1992_4 },
94			{ "CNS1164319925", CS_CNS11643_1992_5 },
95			{ "CNS1164319926", CS_CNS11643_1992_6 },
96			{ "CNS1164319927", CS_CNS11643_1992_7 },
97			{ "CNS116431992F", CS_CNS11643_1992_F },
98	pcg	1.1
99			{ 0, CS_UNKNOWN }
100			};
101
102			static const char *
103			normalize_name (const char *name)
104			{
105			static char res[16];
106			char *r;
107
108			for (r = res; *name && r < res + 15; name++)
109			if ((name >= '0' && name <= '9')
110			\|\| (name >= 'A' && name <= 'Z'))
111			r++ = name;
112			else if (name >= 'a' && name <= 'z')
113			r++ = name - ('a' - 'A');
114
115			*r = 0;
116
117			return res;
118			}
119
120			codeset
121			codeset_from_name (const char *name)
122			{
123			if (!name)
124			return CS_UNKNOWN;
125
126			name = normalize_name (name);
127
128			const struct n2cs *i = n2cs;
129
130			do {
131	pcg	1.3	int len = strlen (i->name);
132
133			if ((i->name[len - 1] == '*'
134			&& !strncmp (name, i->name, len - 1))
135			\|\| !strcmp (name, i->name))
136			return i->cs;
137
138	pcg	1.1	} while ((++i)->name);
139
140			return CS_UNKNOWN;
141			}
142
143	root	1.18	static unicode_t cs_unknown_to_unicode (uint32_t enc) { return NOCHAR; }
144			static uint32_t cs_unknown_from_unicode (unicode_t unicode) { return NOCHAR; }
145
146			static unicode_t cs_unicode_to_unicode (uint32_t enc) { return enc; }
147			static uint32_t cs_unicode_from_unicode (unicode_t unicode) { return unicode; }
148
149			#define cs_us_ascii_to_unicode cs_unicode_to_unicode
150			static uint32_t cs_us_ascii_from_unicode (unicode_t unicode) { return unicode <= 127 ? unicode : NOCHAR; }
151
152			#define cs_us_ascii_to_unicode_16 cs_unicode_to_unicode
153			static uint32_t cs_unicode_16_from_unicode (unicode_t unicode) { return unicode <= 65535 ? unicode : NOCHAR; }
154	pcg	1.1
155			#define ENCODING_DEFAULT
156
157			#include "table/iso8859_1.h"
158			#include "table/iso8859_15.h"
159
160			//#define ENCODING_EU
161
162			#include "table/iso8859_2.h"
163			#include "table/iso8859_3.h"
164			#include "table/iso8859_4.h"
165			#include "table/iso8859_5.h"
166			#include "table/iso8859_6.h"
167			#include "table/iso8859_7.h"
168			#include "table/iso8859_8.h"
169			#include "table/iso8859_9.h"
170			#include "table/iso8859_10.h"
171			#include "table/iso8859_11.h"
172			#include "table/iso8859_13.h"
173			#include "table/iso8859_14.h"
174			#include "table/iso8859_16.h"
175
176			#include "table/koi8_r.h"
177			#include "table/koi8_u.h"
178
179			//#define ENCODING_KR
180
181			#include "table/ksc5601_1987_0.h"
182
183	root	1.20	//#define ENCODING_ZH
184	pcg	1.1
185	root	1.21	#include "table/big5.h"
186			#include "table/gbk_0.h"
187	pcg	1.1	#include "table/gb2312_1980_0.h"
188
189	root	1.20	//#define ENCODING_ZH_EXT
190	pcg	1.1
191			#include "table/cns11643_1992_1.h"
192			#include "table/cns11643_1992_2.h"
193			#include "table/cns11643_1992_3.h"
194			#include "table/cns11643_1992_4.h"
195			#include "table/cns11643_1992_5.h"
196			#include "table/cns11643_1992_6.h"
197			#include "table/cns11643_1992_7.h"
198			#include "table/cns11643_1992_f.h"
199			#include "table/big5_ext.h"
200			#include "table/big5_plus.h"
201
202			//#define ENCODING_VN
203
204			#include "table/viscii.h"
205
206			//#define ENCODING_JP
207
208			#include "table/jis0201_1976_0.h"
209	pcg	1.15	#include "table/jis0208_1990_0.h"
210	pcg	1.1	#include "table/jis0212_1990_0.h"
211
212			//#define ENCODING_JP_EXT
213
214			#include "table/jis0213_1.h"
215			#include "table/jis0213_2.h"
216
217	root	1.18	#if ENCODING_TO_UNICODE
218			# define ENC(base) { cs_ ## base ## _from_unicode, cs_ ## base ## _to_unicode }
219			#else
220			# define ENC(base) { cs_ ## base ## _from_unicode }
221			#endif
222
223
224	pcg	1.3	// order must match table in encoding.h(!)
225	root	1.18	const rxvt_codeset_conv rxvt_codeset[NUM_CODESETS] = {
226			ENC (unknown),
227	pcg	1.1
228	root	1.18	ENC (us_ascii),
229	pcg	1.1
230	root	1.18	ENC (iso8859_1),
231			ENC (iso8859_2),
232			ENC (iso8859_3),
233			ENC (iso8859_4),
234			ENC (iso8859_5),
235			ENC (iso8859_6),
236			ENC (iso8859_7),
237			ENC (iso8859_8),
238			ENC (iso8859_9),
239			ENC (iso8859_10),
240			ENC (iso8859_11),
241			ENC (iso8859_13),
242			ENC (iso8859_14),
243			ENC (iso8859_15),
244			ENC (iso8859_16),
245
246			ENC (koi8_r),
247			ENC (koi8_u),
248
249			ENC (jis0201_1976_0),
250			ENC (jis0208_1990_0),
251			ENC (jis0212_1990_0),
252
253			ENC (jis0213_1),
254			ENC (jis0213_2),
255
256			ENC (ksc5601_1987_0),
257
258			ENC (gb2312_1980_0),
259	root	1.21	ENC (gbk_0),
260	root	1.18
261			ENC (cns11643_1992_1),
262			ENC (cns11643_1992_2),
263			ENC (cns11643_1992_3),
264			ENC (cns11643_1992_4),
265			ENC (cns11643_1992_5),
266			ENC (cns11643_1992_6),
267			ENC (cns11643_1992_7),
268			ENC (cns11643_1992_f),
269			ENC (big5),
270			ENC (big5_ext),
271			ENC (big5_plus),
272	pcg	1.1
273	root	1.18	ENC (viscii),
274	pcg	1.1
275	root	1.18	ENC (unicode_16),
276			ENC (unicode),
277	pcg	1.1	};
278
279	pcg	1.10	#if ENABLE_COMBINING
280			# define ENCODING_COMPOSE
281			#endif
282	pcg	1.9
283			#include "table/compose.h"
284
285	pcg	1.15	unicode_t
286			rxvt_compose (unicode_t c1, unicode_t c2)
287	pcg	1.9	{
288			int l = 0;
289			int r = sizeof (rxvt_compose_table) / sizeof (rxvt_compose_entry) - 1;
290			int m;
291
292			while (r > l)
293			{
294			m = (l + r) / 2;
295			rxvt_compose_entry &c = rxvt_compose_table[m];
296
297			if (c.c1 < c1 \|\| (c.c1 == c1 && c.c2 < c2))
298			l = m + 1;
299			else if (c.c1 > c1 \|\| (c.c1 == c1 && c.c2 > c2))
300			r = m - 1;
301			else
302			return c.r;
303			}
304
305			return NOCHAR;
306			}
307	pcg	1.15
308			#include "table/category.h"
309
310			bool unicode::is_space (unicode_t c)
311			{
312	root	1.19	return IS_SPACE (c)
313			\|\| c == 0x09; // exclude tabs, too, as we store them in the buffer
314	pcg	1.15	}