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    },
  { "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_CN

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

//#define ENCODING_CN_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 (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);
}
Revision:	1.18
Committed:	Wed Aug 4 03:29:28 2004 UTC (19 years, 9 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-3_7, rel-3_6, rel-3_5, rel-3_4
Changes since 1.17:	+65 -64 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			{ "KOI8R", CS_KOI8_R },
64			{ "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			{ "GB6345*", CS_GB2312_1980_0 }, // slightly different to gb2312??
87			{ "GB8565*", CS_GB2312_1980_0 }, // a superset of gb2312??
88			{ "GB13000*", CS_UNICODE },
89			{ "CNS1164319921", CS_CNS11643_1992_1 },
90			{ "CNS1164319922", CS_CNS11643_1992_2 },
91			{ "CNS1164319923", CS_CNS11643_1992_3 },
92			{ "CNS1164319924", CS_CNS11643_1992_4 },
93			{ "CNS1164319925", CS_CNS11643_1992_5 },
94			{ "CNS1164319926", CS_CNS11643_1992_6 },
95			{ "CNS1164319927", CS_CNS11643_1992_7 },
96			{ "CNS116431992F", CS_CNS11643_1992_F },
97	pcg	1.1
98			{ 0, CS_UNKNOWN }
99			};
100
101			static const char *
102			normalize_name (const char *name)
103			{
104			static char res[16];
105			char *r;
106
107			for (r = res; *name && r < res + 15; name++)
108			if ((name >= '0' && name <= '9')
109			\|\| (name >= 'A' && name <= 'Z'))
110			r++ = name;
111			else if (name >= 'a' && name <= 'z')
112			r++ = name - ('a' - 'A');
113
114			*r = 0;
115
116			return res;
117			}
118
119			codeset
120			codeset_from_name (const char *name)
121			{
122			if (!name)
123			return CS_UNKNOWN;
124
125			name = normalize_name (name);
126
127			const struct n2cs *i = n2cs;
128
129			do {
130	pcg	1.3	int len = strlen (i->name);
131
132			if ((i->name[len - 1] == '*'
133			&& !strncmp (name, i->name, len - 1))
134			\|\| !strcmp (name, i->name))
135			return i->cs;
136
137	pcg	1.1	} while ((++i)->name);
138
139			return CS_UNKNOWN;
140			}
141
142	root	1.18	static unicode_t cs_unknown_to_unicode (uint32_t enc) { return NOCHAR; }
143			static uint32_t cs_unknown_from_unicode (unicode_t unicode) { return NOCHAR; }
144
145			static unicode_t cs_unicode_to_unicode (uint32_t enc) { return enc; }
146			static uint32_t cs_unicode_from_unicode (unicode_t unicode) { return unicode; }
147
148			#define cs_us_ascii_to_unicode cs_unicode_to_unicode
149			static uint32_t cs_us_ascii_from_unicode (unicode_t unicode) { return unicode <= 127 ? unicode : NOCHAR; }
150
151			#define cs_us_ascii_to_unicode_16 cs_unicode_to_unicode
152			static uint32_t cs_unicode_16_from_unicode (unicode_t unicode) { return unicode <= 65535 ? unicode : NOCHAR; }
153	pcg	1.1
154			#define ENCODING_DEFAULT
155
156			#include "table/iso8859_1.h"
157			#include "table/iso8859_15.h"
158
159			//#define ENCODING_EU
160
161			#include "table/iso8859_2.h"
162			#include "table/iso8859_3.h"
163			#include "table/iso8859_4.h"
164			#include "table/iso8859_5.h"
165			#include "table/iso8859_6.h"
166			#include "table/iso8859_7.h"
167			#include "table/iso8859_8.h"
168			#include "table/iso8859_9.h"
169			#include "table/iso8859_10.h"
170			#include "table/iso8859_11.h"
171			#include "table/iso8859_13.h"
172			#include "table/iso8859_14.h"
173			#include "table/iso8859_16.h"
174
175			#include "table/koi8_r.h"
176			#include "table/koi8_u.h"
177
178			//#define ENCODING_KR
179
180			#include "table/ksc5601_1987_0.h"
181
182			//#define ENCODING_CN
183
184			#include "table/gb2312_1980_0.h"
185	pcg	1.3	#include "table/big5.h"
186	pcg	1.1
187			//#define ENCODING_CN_EXT
188
189			#include "table/cns11643_1992_1.h"
190			#include "table/cns11643_1992_2.h"
191			#include "table/cns11643_1992_3.h"
192			#include "table/cns11643_1992_4.h"
193			#include "table/cns11643_1992_5.h"
194			#include "table/cns11643_1992_6.h"
195			#include "table/cns11643_1992_7.h"
196			#include "table/cns11643_1992_f.h"
197			#include "table/big5_ext.h"
198			#include "table/big5_plus.h"
199
200			//#define ENCODING_VN
201
202			#include "table/viscii.h"
203
204			//#define ENCODING_JP
205
206			#include "table/jis0201_1976_0.h"
207	pcg	1.15	#include "table/jis0208_1990_0.h"
208	pcg	1.1	#include "table/jis0212_1990_0.h"
209
210			//#define ENCODING_JP_EXT
211
212			#include "table/jis0213_1.h"
213			#include "table/jis0213_2.h"
214
215	root	1.18	#if ENCODING_TO_UNICODE
216			# define ENC(base) { cs_ ## base ## _from_unicode, cs_ ## base ## _to_unicode }
217			#else
218			# define ENC(base) { cs_ ## base ## _from_unicode }
219			#endif
220
221
222	pcg	1.3	// order must match table in encoding.h(!)
223	root	1.18	const rxvt_codeset_conv rxvt_codeset[NUM_CODESETS] = {
224			ENC (unknown),
225	pcg	1.1
226	root	1.18	ENC (us_ascii),
227	pcg	1.1
228	root	1.18	ENC (iso8859_1),
229			ENC (iso8859_2),
230			ENC (iso8859_3),
231			ENC (iso8859_4),
232			ENC (iso8859_5),
233			ENC (iso8859_6),
234			ENC (iso8859_7),
235			ENC (iso8859_8),
236			ENC (iso8859_9),
237			ENC (iso8859_10),
238			ENC (iso8859_11),
239			ENC (iso8859_13),
240			ENC (iso8859_14),
241			ENC (iso8859_15),
242			ENC (iso8859_16),
243
244			ENC (koi8_r),
245			ENC (koi8_u),
246
247			ENC (jis0201_1976_0),
248			ENC (jis0208_1990_0),
249			ENC (jis0212_1990_0),
250
251			ENC (jis0213_1),
252			ENC (jis0213_2),
253
254			ENC (ksc5601_1987_0),
255
256			ENC (gb2312_1980_0),
257
258			ENC (cns11643_1992_1),
259			ENC (cns11643_1992_2),
260			ENC (cns11643_1992_3),
261			ENC (cns11643_1992_4),
262			ENC (cns11643_1992_5),
263			ENC (cns11643_1992_6),
264			ENC (cns11643_1992_7),
265			ENC (cns11643_1992_f),
266			ENC (big5),
267			ENC (big5_ext),
268			ENC (big5_plus),
269	pcg	1.1
270	root	1.18	ENC (viscii),
271	pcg	1.1
272	root	1.18	ENC (unicode_16),
273			ENC (unicode),
274	pcg	1.1	};
275
276	pcg	1.10	#if ENABLE_COMBINING
277			# define ENCODING_COMPOSE
278			#endif
279	pcg	1.9
280			#include "table/compose.h"
281
282	pcg	1.15	unicode_t
283			rxvt_compose (unicode_t c1, unicode_t c2)
284	pcg	1.9	{
285			int l = 0;
286			int r = sizeof (rxvt_compose_table) / sizeof (rxvt_compose_entry) - 1;
287			int m;
288
289			while (r > l)
290			{
291			m = (l + r) / 2;
292			rxvt_compose_entry &c = rxvt_compose_table[m];
293
294			if (c.c1 < c1 \|\| (c.c1 == c1 && c.c2 < c2))
295			l = m + 1;
296			else if (c.c1 > c1 \|\| (c.c1 == c1 && c.c2 > c2))
297			r = m - 1;
298			else
299			return c.r;
300			}
301
302			return NOCHAR;
303			}
304	pcg	1.15
305			#include "table/category.h"
306
307			bool unicode::is_space (unicode_t c)
308			{
309			return IS_SPACE (c);
310			}