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Diffstat (limited to 'src/encoding.C')
| -rw-r--r-- | src/encoding.C | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/src/encoding.C b/src/encoding.C new file mode 100644 index 0000000..0b6d593 --- /dev/null +++ b/src/encoding.C @@ -0,0 +1,316 @@ +/*----------------------------------------------------------------------* + * File: encoding.C + *----------------------------------------------------------------------* + * + * All portions of code are copyright by their respective author/s. + * Copyright (c) 2003-2006 Marc Lehmann <schmorp@schmorp.de> + * + * 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 3 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 "rxvtutil.h" + +#include <stdlib.h> +#include <string.h> + +static 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 }, + { "ISO6461991IRV", CS_US_ASCII }, // older versions used the currency sign + + { "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 = ecb_array_length (rxvt_compose_table) - 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 +} |