/* * UCdomap.c * ========= * * Derived from code in the Linux kernel console driver. * The GNU Public Licence therefore applies, see * the file COPYING in the top-level directory * which should come with every Lynx distribution. * * [ original comment: - KW ] * * Mapping from internal code (such as Latin-1 or Unicode or IBM PC code) * to font positions. * * aeb, 950210 */ #include #include #include #include #include #include #include #include #include /* * Include tables & parameters. */ #include /* WinLatin2 (cp1250) */ #include /* WinCyrillic (cp1251) */ #include /* WinLatin1 (cp1252) */ #include /* WinGreek (cp1253) */ #include /* WinHebrew (cp1255) */ #include /* WinArabic (cp1256) */ #include /* WinBaltRim (cp1257) */ #include /* DosLatinUS (cp437) */ #include /* DosGreek (cp737) */ #include /* DosBaltRim (cp775) */ #include /* DosLatin1 (cp850) */ #include /* DosLatin2 (cp852) */ #include /* DosHebrew (cp862) */ #include /* DosArabic (cp864) */ #include /* DosCyrillic (cp866) */ #include /* DosGreek2 (cp869) */ #include /* 7 bit approximations */ #include /* DEC Multinational */ #include /* ISO Latin 1 */ #include /* ISO Latin 2 */ #include /* ISO Latin 3 */ #include /* ISO Latin 4 */ #include /* ISO 8859-5 Cyrillic */ #include /* ISO 8859-6 Arabic */ #include /* ISO 8859-7 Greek */ #include /* ISO 8859-8 Hebrew */ #include /* ISO 8859-9 (Latin 5) */ #include /* ISO 8859-10 */ #include /* KOI8-R Cyrillic */ #include /* Macintosh (8 bit) */ #include /* RFC 1345 Mnemonic */ #include /* NeXT character set */ #include /* RFC 1345 w/o Intro */ #include /* UNICODE UTF 8 */ #include /* Vietnamese (VISCII) */ #ifdef NOTDEFINED #include #endif /* NOTDEFINED */ /* * Some of the code below, and some of the comments, are left in for * historical reasons. Not all those tables below are currently * really needed (and what with all those hardwired codepoints), * but let's keep them around for now. They may come in handy if we * decide to make more extended use of the mechanisms (including e.g. * for chars < 127...). - KW */ PRIVATE u16 translations[][256] = { /* * 8-bit Latin-1 mapped to Unicode -- trivial mapping. */ { 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f, 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017, 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f, 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f, 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f, 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047, 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f, 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f, 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067, 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f, 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078, 0x0079, 0x007a, 0x007b, 0x007c, 0x007d, 0x007e, 0x007f, 0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x0085, 0x0086, 0x0087, 0x0088, 0x0089, 0x008a, 0x008b, 0x008c, 0x008d, 0x008e, 0x008f, 0x0090, 0x0091, 0x0092, 0x0093, 0x0094, 0x0095, 0x0096, 0x0097, 0x0098, 0x0099, 0x009a, 0x009b, 0x009c, 0x009d, 0x009e, 0x009f, 0x00a0, 0x00a1, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7, 0x00a8, 0x00a9, 0x00aa, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af, 0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7, 0x00b8, 0x00b9, 0x00ba, 0x00bb, 0x00bc, 0x00bd, 0x00be, 0x00bf, 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6, 0x00c7, 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce, 0x00cf, 0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7, 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df, 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6, 0x00e7, 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef, 0x00f0, 0x00f1, 0x00f2, 0x00f3, 0x00f4, 0x00f5, 0x00f6, 0x00f7, 0x00f8, 0x00f9, 0x00fa, 0x00fb, 0x00fc, 0x00fd, 0x00fe, 0x00ff }, /* * VT100 graphics mapped to Unicode. */ { 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f, 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017, 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f, 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f, 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f, 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047, 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f, 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x00a0, 0x25c6, 0x2592, 0x2409, 0x240c, 0x240d, 0x240a, 0x00b0, 0x00b1, 0x2424, 0x240b, 0x2518, 0x2510, 0x250c, 0x2514, 0x253c, 0xf800, 0xf801, 0x2500, 0xf803, 0xf804, 0x251c, 0x2524, 0x2534, 0x252c, 0x2502, 0x2264, 0x2265, 0x03c0, 0x2260, 0x00a3, 0x00b7, 0x007f, 0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x0085, 0x0086, 0x0087, 0x0088, 0x0089, 0x008a, 0x008b, 0x008c, 0x008d, 0x008e, 0x008f, 0x0090, 0x0091, 0x0092, 0x0093, 0x0094, 0x0095, 0x0096, 0x0097, 0x0098, 0x0099, 0x009a, 0x009b, 0x009c, 0x009d, 0x009e, 0x009f, 0x00a0, 0x00a1, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7, 0x00a8, 0x00a9, 0x00aa, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af, 0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7, 0x00b8, 0x00b9, 0x00ba, 0x00bb, 0x00bc, 0x00bd, 0x00be, 0x00bf, 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6, 0x00c7, 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce, 0x00cf, 0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7, 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df, 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6, 0x00e7, 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef, 0x00f0, 0x00f1, 0x00f2, 0x00f3, 0x00f4, 0x00f5, 0x00f6, 0x00f7, 0x00f8, 0x00f9, 0x00fa, 0x00fb, 0x00fc, 0x00fd, 0x00fe, 0x00ff }, /* * IBM Codepage 437 mapped to Unicode. */ { 0x0000, 0x263a, 0x263b, 0x2665, 0x2666, 0x2663, 0x2660, 0x2022, 0x25d8, 0x25cb, 0x25d9, 0x2642, 0x2640, 0x266a, 0x266b, 0x263c, 0x25ba, 0x25c4, 0x2195, 0x203c, 0x00b6, 0x00a7, 0x25ac, 0x21a8, 0x2191, 0x2193, 0x2192, 0x2190, 0x221f, 0x2194, 0x25b2, 0x25bc, 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f, 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f, 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047, 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f, 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f, 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067, 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f, 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078, 0x0079, 0x007a, 0x007b, 0x007c, 0x007d, 0x007e, 0x2302, 0x00c7, 0x00fc, 0x00e9, 0x00e2, 0x00e4, 0x00e0, 0x00e5, 0x00e7, 0x00ea, 0x00eb, 0x00e8, 0x00ef, 0x00ee, 0x00ec, 0x00c4, 0x00c5, 0x00c9, 0x00e6, 0x00c6, 0x00f4, 0x00f6, 0x00f2, 0x00fb, 0x00f9, 0x00ff, 0x00d6, 0x00dc, 0x00a2, 0x00a3, 0x00a5, 0x20a7, 0x0192, 0x00e1, 0x00ed, 0x00f3, 0x00fa, 0x00f1, 0x00d1, 0x00aa, 0x00ba, 0x00bf, 0x2310, 0x00ac, 0x00bd, 0x00bc, 0x00a1, 0x00ab, 0x00bb, 0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557, 0x255d, 0x255c, 0x255b, 0x2510, 0x2514, 0x2534, 0x252c, 0x251c, 0x2500, 0x253c, 0x255e, 0x255f, 0x255a, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256c, 0x2567, 0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256b, 0x256a, 0x2518, 0x250c, 0x2588, 0x2584, 0x258c, 0x2590, 0x2580, 0x03b1, 0x00df, 0x0393, 0x03c0, 0x03a3, 0x03c3, 0x00b5, 0x03c4, 0x03a6, 0x0398, 0x03a9, 0x03b4, 0x221e, 0x03c6, 0x03b5, 0x2229, 0x2261, 0x00b1, 0x2265, 0x2264, 0x2320, 0x2321, 0x00f7, 0x2248, 0x00b0, 0x2219, 0x00b7, 0x221a, 0x207f, 0x00b2, 0x25a0, 0x00a0 }, /* * User mapping -- default to codes for direct font mapping. */ { 0xf000, 0xf001, 0xf002, 0xf003, 0xf004, 0xf005, 0xf006, 0xf007, 0xf008, 0xf009, 0xf00a, 0xf00b, 0xf00c, 0xf00d, 0xf00e, 0xf00f, 0xf010, 0xf011, 0xf012, 0xf013, 0xf014, 0xf015, 0xf016, 0xf017, 0xf018, 0xf019, 0xf01a, 0xf01b, 0xf01c, 0xf01d, 0xf01e, 0xf01f, 0xf020, 0xf021, 0xf022, 0xf023, 0xf024, 0xf025, 0xf026, 0xf027, 0xf028, 0xf029, 0xf02a, 0xf02b, 0xf02c, 0xf02d, 0xf02e, 0xf02f, 0xf030, 0xf031, 0xf032, 0xf033, 0xf034, 0xf035, 0xf036, 0xf037, 0xf038, 0xf039, 0xf03a, 0xf03b, 0xf03c, 0xf03d, 0xf03e, 0xf03f, 0xf040, 0xf041, 0xf042, 0xf043, 0xf044, 0xf045, 0xf046, 0xf047, 0xf048, 0xf049, 0xf04a, 0xf04b, 0xf04c, 0xf04d, 0xf04e, 0xf04f, 0xf050, 0xf051, 0xf052, 0xf053, 0xf054, 0xf055, 0xf056, 0xf057, 0xf058, 0xf059, 0xf05a, 0xf05b, 0xf05c, 0xf05d, 0xf05e, 0xf05f, 0xf060, 0xf061, 0xf062, 0xf063, 0xf064, 0xf065, 0xf066, 0xf067, 0xf068, 0xf069, 0xf06a, 0xf06b, 0xf06c, 0xf06d, 0xf06e, 0xf06f, 0xf070, 0xf071, 0xf072, 0xf073, 0xf074, 0xf075, 0xf076, 0xf077, 0xf078, 0xf079, 0xf07a, 0xf07b, 0xf07c, 0xf07d, 0xf07e, 0xf07f, 0xf080, 0xf081, 0xf082, 0xf083, 0xf084, 0xf085, 0xf086, 0xf087, 0xf088, 0xf089, 0xf08a, 0xf08b, 0xf08c, 0xf08d, 0xf08e, 0xf08f, 0xf090, 0xf091, 0xf092, 0xf093, 0xf094, 0xf095, 0xf096, 0xf097, 0xf098, 0xf099, 0xf09a, 0xf09b, 0xf09c, 0xf09d, 0xf09e, 0xf09f, 0xf0a0, 0xf0a1, 0xf0a2, 0xf0a3, 0xf0a4, 0xf0a5, 0xf0a6, 0xf0a7, 0xf0a8, 0xf0a9, 0xf0aa, 0xf0ab, 0xf0ac, 0xf0ad, 0xf0ae, 0xf0af, 0xf0b0, 0xf0b1, 0xf0b2, 0xf0b3, 0xf0b4, 0xf0b5, 0xf0b6, 0xf0b7, 0xf0b8, 0xf0b9, 0xf0ba, 0xf0bb, 0xf0bc, 0xf0bd, 0xf0be, 0xf0bf, 0xf0c0, 0xf0c1, 0xf0c2, 0xf0c3, 0xf0c4, 0xf0c5, 0xf0c6, 0xf0c7, 0xf0c8, 0xf0c9, 0xf0ca, 0xf0cb, 0xf0cc, 0xf0cd, 0xf0ce, 0xf0cf, 0xf0d0, 0xf0d1, 0xf0d2, 0xf0d3, 0xf0d4, 0xf0d5, 0xf0d6, 0xf0d7, 0xf0d8, 0xf0d9, 0xf0da, 0xf0db, 0xf0dc, 0xf0dd, 0xf0de, 0xf0df, 0xf0e0, 0xf0e1, 0xf0e2, 0xf0e3, 0xf0e4, 0xf0e5, 0xf0e6, 0xf0e7, 0xf0e8, 0xf0e9, 0xf0ea, 0xf0eb, 0xf0ec, 0xf0ed, 0xf0ee, 0xf0ef, 0xf0f0, 0xf0f1, 0xf0f2, 0xf0f3, 0xf0f4, 0xf0f5, 0xf0f6, 0xf0f7, 0xf0f8, 0xf0f9, 0xf0fa, 0xf0fb, 0xf0fc, 0xf0fd, 0xf0fe, 0xf0ff } }; PRIVATE u16 *UC_translate = NULL; PRIVATE struct UC_charset UCInfo[MAXCHARSETS]; /* * The standard kernel character-to-font mappings are not invertible * -- this is just a best effort. */ #define MAX_GLYPH 512 /* Max possible glyph value */ PRIVATE unsigned char * inv_translate = NULL; PRIVATE unsigned char inv_norm_transl[MAX_GLYPH]; PRIVATE unsigned char * inverse_translations[4] = { NULL, NULL, NULL, NULL }; PRIVATE void set_inverse_transl PARAMS(( int i)); PRIVATE u16 *set_translate PARAMS(( int m)); #ifdef NOTDEFINED PRIVATE unsigned char inverse_translate PARAMS((int glyph)); PRIVATE int con_set_trans_old PARAMS((unsigned char *arg)); PRIVATE int con_get_trans_old PARAMS((unsigned char *arg)); PRIVATE int con_set_trans_new PARAMS((u16 *arg)); PRIVATE int con_get_trans_new PARAMS((u16 *arg)); #endif /* NOTDEFINED */ PRIVATE int UC_valid_UC_charset PARAMS(( int UC_charset_hndl)); PRIVATE void UC_con_set_trans PARAMS(( int UC_charset_in_hndl, int Gn, int update_flag)); PRIVATE int con_insert_unipair PARAMS(( u16 unicode, u16 fontpos, int fordefault)); PRIVATE int con_insert_unipair_str PARAMS(( u16 unicode, CONST char * replace_str, int fordefault)); PRIVATE void con_clear_unimap PARAMS(( int fordefault)); PRIVATE void con_clear_unimap_str PARAMS(( int fordefault)); #ifdef NOTDEFINED PRIVATE int con_set_unimap PARAMS(( u16 ct, struct unipair * list)); #endif /* NOTDEFINED */ PRIVATE void con_set_default_unimap NOPARAMS; PRIVATE int UC_con_set_unimap PARAMS(( int UC_charset_out_hndl, int update_flag)); PRIVATE int UC_con_set_unimap_str PARAMS(( u16 ct, struct unipair_str * list, int fordefault)); #ifdef NOTDEFINED PRIVATE int con_get_unimap PARAMS(( u16 ct, u16 * uct, struct unipair * list)); #endif /* NOTDEFINED */ PRIVATE int conv_uni_to_pc PARAMS(( long ucs, int usedefault)); PRIVATE int conv_uni_to_str PARAMS(( char* outbuf, int buflen, long ucs, int usedefault)); PRIVATE void UCconsole_map_init NOPARAMS; PRIVATE int UC_MapGN PARAMS(( int UChndl, int update_flag)); PRIVATE int UC_FindGN_byMIME PARAMS(( CONST char * UC_MIMEcharset)); PRIVATE void UCreset_allocated_LYCharSets NOPARAMS; PRIVATE void UCfree_allocated_LYCharSets NOPARAMS; PRIVATE CONST char ** UC_setup_LYCharSets_repl PARAMS(( int UC_charset_in_hndl, unsigned lowest8)); PRIVATE int UC_Register_with_LYCharSets PARAMS(( int s, CONST char * UC_MIMEcharset, CONST char * UC_LYNXcharset, int lowest_eightbit)); PRIVATE void UCcleanup_mem NOPARAMS; PRIVATE int default_UChndl = -1; PRIVATE void set_inverse_transl ARGS1( int, i) { int j, glyph; u16 *p = translations[i]; unsigned char *q = inverse_translations[i]; if (!q) { /* * Slightly messy to avoid calling kmalloc too early. */ q = inverse_translations[i] = ((i == LAT1_MAP) ? inv_norm_transl : (unsigned char *)malloc(MAX_GLYPH)); if (!q) return; } for (j = 0; j < MAX_GLYPH; j++) q[j] = 0; for (j = 0; j < E_TABSZ; j++) { glyph = conv_uni_to_pc(p[j], 0); if (glyph >= 0 && glyph < MAX_GLYPH && q[glyph] < 32) { /* * Prefer '-' above SHY etc. */ q[glyph] = j; } } } PRIVATE u16 *set_translate ARGS1( int, m) { if (!inverse_translations[m]) set_inverse_transl(m); inv_translate = inverse_translations[m]; return translations[m]; } #ifdef NOTDEFINED /* * Inverse translation is impossible for several reasons: * 1. The font<->character maps are not 1-1. * 2. The text may have been written while a different translation map * was active, or using Unicode. * Still, it is now possible to a certain extent to cut and paste non-ASCII. */ PRIVATE unsigned char inverse_translate ARGS1( int, glyph) { if (glyph < 0 || glyph >= MAX_GLYPH) { return 0; } else { return ((inv_translate && inv_translate[glyph]) ? inv_translate[glyph] : (unsigned char)(glyph & 0xff)); } } /* * Load customizable translation table. * 'arg' points to a 256 byte translation table. * * The "old" variants are for translation directly to font (using the * 0xf000-0xf0ff "transparent" Unicodes) whereas the "new" variants set * Unicodes explicitly. */ PRIVATE int con_set_trans_old ARGS1( unsigned char *, arg) { int i; u16 *p = translations[USER_MAP]; #if(0) i = verify_area(VERIFY_READ, (void *)arg, E_TABSZ); if (i) return i; #endif for (i = 0; i < E_TABSZ; i++) p[i] = UNI_DIRECT_BASE | (u16)arg[i]; set_inverse_transl(USER_MAP); return 0; } PRIVATE int con_get_trans_old ARGS1( unsigned char *, arg) { int i, ch; u16 *p = translations[USER_MAP]; #if(0) i = verify_area(VERIFY_WRITE, (void *)arg, E_TABSZ); if (i) return i; #endif for (i = 0; i < E_TABSZ; i++) { ch = conv_uni_to_pc(p[i]); #ifdef NOTDEFINED put_user((ch & ~0xff) ? 0 : ch, arg+i); #endif /* NOTDEFINED */ arg[i] = (unsigned char)((ch & ~0xff) ? 0 : ch); } return 0; } PRIVATE int con_set_trans_new ARGS1( u16 *, arg) { int i; u16 *p = translations[USER_MAP]; #if(0) i = verify_area(VERIFY_READ, (void *)arg, E_TABSZ*sizeof(u16)); if (i) return i; #endif for (i = 0; i < E_TABSZ; i++) p[i] = arg[i]; set_inverse_transl(USER_MAP); return 0; } PRIVATE int con_get_trans_new ARGS1( u16 * arg) { int i; u16 *p = translations[USER_MAP]; #if(0) i = verify_area(VERIFY_WRITE, (void *)arg, E_TABSZ*sizeof(u16)); if (i) return i; #endif for (i = 0; i < E_TABSZ; i++) arg[i] = p[i]; return 0; } #endif /* NOTDEFINED */ PRIVATE int UC_valid_UC_charset ARGS1( int, UC_charset_hndl) { return (UC_charset_hndl >= 0 && UC_charset_hndl < UCNumCharsets); } PRIVATE void UC_con_set_trans ARGS3( int, UC_charset_in_hndl, int, Gn, int, update_flag) { int i, j; u16 *p; u16 *ptrans; if (!UC_valid_UC_charset(UC_charset_in_hndl)) { CTRACE(tfp, "UC_con_set_trans: Invalid charset handle %d.\n", UC_charset_in_hndl); return; } ptrans = translations[Gn]; p = UCInfo[UC_charset_in_hndl].unitable; #if(0) if (p == UC_current_unitable) { /* test whether pointers are equal */ return; /* nothing to be done */ } /* * The font is always 256 characters - so far. */ con_clear_unimap(); #endif for (i = 0; i < 256; i++) { if ((j = UCInfo[UC_charset_in_hndl].unicount[i])) { ptrans[i] = *p; for (; j; j--) { p++; } } else { ptrans[i] = 0xfffd; } } if (update_flag) { set_inverse_transl(Gn); /* Update inverse translation for this one */ } } /* * Unicode -> current font conversion * * A font has at most 512 chars, usually 256. * But one font position may represent several Unicode chars. * A hashtable is somewhat of a pain to deal with, so use a * "paged table" instead. Simulation has shown the memory cost of * this 3-level paged table scheme to be comparable to a hash table. */ PRIVATE int hashtable_contents_valid = 0; /* Use ASCII-only mode for bootup*/ PRIVATE int hashtable_str_contents_valid = 0; PRIVATE u16 **uni_pagedir[32] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }; PRIVATE char* **uni_pagedir_str[32] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }; PRIVATE u16 * UC_current_unitable = NULL; PRIVATE struct unimapdesc_str *UC_current_unitable_str = NULL; /* * Keep a second set of structures for the translation designated * as "default" - kw */ PRIVATE int unidefault_contents_valid = 0; /* Use ASCII-only mode for bootup*/ PRIVATE int unidefault_str_contents_valid = 0; static u16 **unidefault_pagedir[32] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }; static char* **unidefault_pagedir_str[32] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }; PRIVATE u16 * UC_default_unitable = NULL; PRIVATE struct unimapdesc_str *UC_default_unitable_str = NULL; PRIVATE int con_insert_unipair ARGS3( u16, unicode, u16, fontpos, int, fordefault) { int i, n; u16 **p1, *p2; if(fordefault) p1 = unidefault_pagedir[n = unicode >> 11]; else p1 = uni_pagedir[n = unicode >> 11]; if (!p1) { p1 = (u16* *)malloc(32*sizeof(u16 *)); if (fordefault) unidefault_pagedir[n] = p1; else uni_pagedir[n] = p1; if ( !p1 ) return -ENOMEM; for (i = 0; i < 32; i++) { p1[i] = NULL; } } if (!(p2 = p1[n = (unicode >> 6) & 0x1f])) { p2 = p1[n] = (u16 *)malloc(64*sizeof(u16)); if (!p2) return -ENOMEM; for (i = 0; i < 64; i++) { p2[i] = 0xffff; /* No glyph for this character (yet) */ } } p2[unicode & 0x3f] = fontpos; return 0; } PRIVATE int con_insert_unipair_str ARGS3( u16, unicode, CONST char *, replace_str, int, fordefault) { int i, n; char ***p1; CONST char **p2; if(fordefault) p1 = unidefault_pagedir_str[n = unicode >> 11]; else p1 = uni_pagedir_str[n = unicode >> 11]; if (!p1) { p1 = (char** *)malloc(32*sizeof(char **)); if (fordefault) unidefault_pagedir_str[n] = p1; else uni_pagedir_str[n] = p1; if ( !p1 ) return -ENOMEM; for (i = 0; i < 32; i++) { p1[i] = NULL; } } n = ((unicode >> 6) & 0x1f); if (!p1[n]) { p1[n] = (char **)malloc(64*sizeof(char *)); if (!p1[n]) return -ENOMEM; p2 = (CONST char **)p1[n]; for (i = 0; i < 64; i++) { p2[i] = NULL; /* No replace string this character (yet) */ } } p2 = (CONST char **)p1[n]; p2[unicode & 0x3f] = replace_str; return 0; } /* * ui arg was a leftover, deleted. - KW */ PRIVATE void con_clear_unimap ARGS1( int, fordefault) { int i, j; u16 **p1; if (fordefault) { for (i = 0; i < 32; i++) { if ((p1 = unidefault_pagedir[i]) != NULL) { for (j = 0; j < 32; j++) { FREE(p1[j]); } FREE(p1); } unidefault_pagedir[i] = NULL; } unidefault_contents_valid = 1; } else { for (i = 0; i < 32; i++) { if ((p1 = uni_pagedir[i]) != NULL) { for (j = 0; j < 32; j++) { FREE(p1[j]); } FREE(p1); } uni_pagedir[i] = NULL; } hashtable_contents_valid = 1; } } PRIVATE void con_clear_unimap_str ARGS1(int, fordefault) { int i, j; char ***p1; if (fordefault) { for (i = 0; i < 32; i++) { if ((p1 = unidefault_pagedir_str[i]) != NULL) { for (j = 0; j < 32; j++) { FREE(p1[j]); } FREE(p1); } unidefault_pagedir_str[i] = NULL; } unidefault_str_contents_valid = 1; /* ??? probably no use... */ } else { for (i = 0; i < 32; i++) { if ((p1 = uni_pagedir_str[i]) != NULL) { for (j = 0; j < 32; j++) { FREE(p1[j]); } FREE(p1); } uni_pagedir_str[i] = NULL; } hashtable_str_contents_valid = 1; /* ??? probably no use... */ } } #ifdef NOTDEFINED PRIVATE int con_set_unimap ARGS2( u16, ct, struct unipair *, list) { int err = 0, err1, i; while (ct--) { if ((err1 = con_insert_unipair(list->unicode, list->fontpos)) != 0) { err = err1; } list++; } for (i = 0; i <= 3; i++) { set_inverse_transl(i); /* Update all inverse translations */ } return err; } #endif /* NOTDEFINED */ /* * Loads the unimap for the hardware font, as defined in uni_hash.tbl. * The representation used was the most compact I could come up * with. This routine is executed at sys_setup time, and when the * PIO_FONTRESET ioctl is called. */ PRIVATE void con_set_default_unimap NOARGS { int i, j; u16 *p; /* * The default font is always 256 characters. */ con_clear_unimap(1); p = dfont_unitable; for (i = 0; i < 256; i++) { for (j = dfont_unicount[i]; j; j--) { con_insert_unipair(*(p++), i, 1); } } #if 0 for (i = 0; i <= 3; i++) { set_inverse_transl(i); /* Update all inverse translations */ } #endif UC_default_unitable = dfont_unitable; con_clear_unimap_str(1); UC_con_set_unimap_str(dfont_replacedesc.entry_ct, repl_map, 1); UC_default_unitable_str = &dfont_replacedesc; } PUBLIC int UCNumCharsets = 0; PUBLIC int UCLYhndl_HTFile_for_unspec = -1; PUBLIC int UCLYhndl_HTFile_for_unrec = -1; PUBLIC int UCLYhndl_for_unspec = -1; PUBLIC int UCLYhndl_for_unrec = -1; PRIVATE int UC_con_set_unimap ARGS2( int, UC_charset_out_hndl, int, update_flag) { int i, j; u16 *p; if (!UC_valid_UC_charset(UC_charset_out_hndl)) { CTRACE(tfp, "UC_con_set_unimap: Invalid charset handle %d.\n", UC_charset_out_hndl); return -1; } p = UCInfo[UC_charset_out_hndl].unitable; if (p == UC_current_unitable) { /* test whether pointers are equal */ return update_flag; /* nothing to be done */ } UC_current_unitable = p; /* * The font is always 256 characters - so far. */ con_clear_unimap(0); for (i = 0; i < 256; i++) { for (j = UCInfo[UC_charset_out_hndl].unicount[i]; j; j--) { con_insert_unipair(*(p++), i, 0); } } if (update_flag) { for (i = 0; i <= 3; i++) { set_inverse_transl(i); /* Update all inverse translations */ } } return 0; } PRIVATE int UC_con_set_unimap_str ARGS3( u16, ct, struct unipair_str *, list, int, fordefault) { int err = 0, err1; while (ct--) { if ((err1 = con_insert_unipair_str(list->unicode, list->replace_str, fordefault)) != 0) { err = err1; } list++; } /* * No inverse translations for replacement strings! */ if (!err) { if (fordefault) unidefault_str_contents_valid = 1; else hashtable_str_contents_valid = 1; } return err; } #ifdef NOTDEFINED PRIVATE int con_get_unimap ARGS3( u16, ct, u16 *, uct, struct unipair *, list) { int i, j, k, ect; u16 **p1, *p2; ect = 0; if (hashtable_contents_valid) { for (i = 0; i < 32; i++) { if ((p1 = uni_pagedir[i]) != NULL) { for (j = 0; j < 32; j++) { if ((p2 = *(p1++)) != NULL) { for (k = 0; k < 64; k++) { if (*p2 < MAX_GLYPH && ect++ < ct) { list->unicode = (u16) ((i<<11)+(j<<6)+k); list->fontpos = (u16) *p2; list++; } p2++; } } } } } } *uct = ect; return ((ect <= ct) ? 0 : -ENOMEM); } #endif /* NOTDEFINED */ PRIVATE int conv_uni_to_pc ARGS2( long, ucs, int, usedefault) { int h; u16 **p1, *p2; /* * Only 16-bit codes supported at this time. */ if (ucs > 0xffff) { /* * U+FFFD: REPLACEMENT CHARACTER. */ ucs = 0xfffd; } else if (ucs < 0x20 || ucs >= 0xfffe) { /* * Not a printable character. */ return -1; } else if (ucs == 0xfeff || (ucs >= 0x200b && ucs <= 0x200f)) { /* * Zero-width space. */ return -2; } else if ((ucs & ~UNI_DIRECT_MASK) == UNI_DIRECT_BASE) { /* * UNI_DIRECT_BASE indicates the start of the region in the * User Zone which always has a 1:1 mapping to the currently * loaded font. The UNI_DIRECT_MASK indicates the bit span * of the region. */ return (ucs & UNI_DIRECT_MASK); } if (usedefault) { if (!unidefault_contents_valid) return -3; p1 = unidefault_pagedir[ucs >> 11]; } else { if (!hashtable_contents_valid) return -3; p1 = uni_pagedir[ucs >> 11]; } if (p1 && (p2 = p1[(ucs >> 6) & 0x1f]) && (h = p2[ucs & 0x3f]) < MAX_GLYPH) { return h; } /* * Not found. */ return -4; } /* * Note: contents of outbuf is not changes for negative return value! */ PRIVATE int conv_uni_to_str ARGS4( char*, outbuf, int, buflen, long, ucs, int, usedefault) { char *h; char ***p1, **p2; /* * Only 16-bit codes supported at this time. */ if (ucs > 0xffff) { /* * U+FFFD: REPLACEMENT CHARACTER. */ ucs = 0xfffd; /* * Maybe the following two cases should be allowed here?? - KW */ } else if (ucs < 0x20 || ucs >= 0xfffe) { /* * Not a printable character. */ return -1; } else if (ucs == 0xfeff || (ucs >= 0x200b && ucs <= 0x200f)) { /* * Zero-width space. */ return -2; #ifdef NOTDEFINED /* We don't handle the following here: */ } else if ((ucs & ~UNI_DIRECT_MASK) == UNI_DIRECT_BASE) { /* * UNI_DIRECT_BASE indicates the start of the region in the * User Zone which always has a 1:1 mapping to the currently * loaded font. The UNI_DIRECT_MASK indicates the bit span * of the region. */ return ucs & UNI_DIRECT_MASK; #endif /* NOTDEFINED */ } if (usedefault) { if (!unidefault_str_contents_valid) return -3; p1 = unidefault_pagedir_str[ucs >> 11]; } else { if (!hashtable_str_contents_valid) return -3; p1 = uni_pagedir_str[ucs >> 11]; } if (p1 && (p2 = p1[(ucs >> 6) & 0x1f]) && (h = p2[ucs & 0x3f])) { strncpy (outbuf,h,(size_t) (buflen-1)); return 1; /* ok ! */ } /* * Not found. */ return -4; } PUBLIC int UCInitialized = 0; /* * [ original comment: - KW ] * This is called at sys_setup time, after memory and the console are * initialized. It must be possible to call kmalloc(..., GFP_KERNEL) * from this function, hence the call from sys_setup. */ PRIVATE void UCconsole_map_init NOARGS { con_set_default_unimap(); UCInitialized = 1; } /* * OK now, finally, some stuff that is more specifically for Lynx: - KW */ #ifdef NOTDEFINED PUBLIC int UCGetcharset_byMIMEname PARAMS((CONST char * UC_MIMEcharset)); PUBLIC int UCGetcharset_byLYNXname PARAMS((CONST char * UC_LYNXcharset)); #endif /* NOTDEFINED */ PUBLIC int UCTransUniChar ARGS2( long, unicode, int, charset_out) { int rc = 0; int UChndl_out; int isdefault, trydefault = 0; u16 * ut; if ((UChndl_out = LYCharSet_UC[charset_out].UChndl) < 0) { if ((UChndl_out = default_UChndl) < 0) return -12; isdefault = 1; } else { isdefault = UCInfo[UChndl_out].replacedesc.isdefault; trydefault = UCInfo[UChndl_out].replacedesc.trydefault; } if (!isdefault) { ut = UCInfo[UChndl_out].unitable; if (ut != UC_current_unitable) { rc = UC_con_set_unimap(UChndl_out, 1); if (rc < 0) { return rc; } } rc = conv_uni_to_pc(unicode, 0); if (rc >= 0) return rc; } if (isdefault || trydefault) { rc = conv_uni_to_pc(unicode, 1); if (rc >= 0) return rc; } if (!isdefault && (rc == -4)) { rc = conv_uni_to_pc(0xfffd, 0); } if ((isdefault || trydefault) && (rc == -4)) { rc = conv_uni_to_pc(0xfffd, 1); } return rc; } /* * Returns string length, or negative value for error. */ PUBLIC int UCTransUniCharStr ARGS5( char *, outbuf, int, buflen, long, unicode, int, charset_out, int, chk_single_flag) { int rc = -14, src = 0, ignore_err; int UChndl_out; int isdefault, trydefault = 0; struct unimapdesc_str * repl; u16 * ut; if (buflen < 2) return -13; if ((UChndl_out = LYCharSet_UC[charset_out].UChndl) < 0) { if ((UChndl_out = default_UChndl) < 0) return -12; isdefault = 1; } else { isdefault = UCInfo[UChndl_out].replacedesc.isdefault; trydefault = UCInfo[UChndl_out].replacedesc.trydefault; } if (chk_single_flag) { if (!isdefault) { ut = UCInfo[UChndl_out].unitable; if (ut != UC_current_unitable) { src = UC_con_set_unimap(UChndl_out, 1); if (src < 0) { return src; } } } src = conv_uni_to_pc(unicode, isdefault); if (src >= 32) { outbuf[0] = src; outbuf[1] = '\0'; return 1; } } repl = &(UCInfo[UChndl_out].replacedesc); if (!isdefault) { if (repl != UC_current_unitable_str) { con_clear_unimap_str(0); ignore_err = UC_con_set_unimap_str(repl->entry_ct, repl->entries, 0); UC_current_unitable_str = repl; } rc = conv_uni_to_str(outbuf, buflen, unicode, 0); if (rc >= 0) return (strlen(outbuf)); } if (trydefault && chk_single_flag) { src = conv_uni_to_pc(unicode, 1); if (src >= 32) { outbuf[0] = src; outbuf[1] = '\0'; return 1; } } if (isdefault || trydefault) { rc = conv_uni_to_str(outbuf, buflen, unicode, 1); if (rc >= 0) return (strlen(outbuf)); } if (rc == -4) { if (!isdefault) rc = conv_uni_to_str(outbuf, buflen, 0xfffd, 0); if ((rc == -4) && (isdefault || trydefault)) rc = conv_uni_to_str(outbuf, buflen, 0xfffd, 1); if (rc >= 0) return (strlen(outbuf)); } if (chk_single_flag && src == -4) { if (!isdefault) rc = conv_uni_to_pc(0xfffd, 0); if ((rc == -4) && (isdefault || trydefault)) rc = conv_uni_to_pc(0xfffd, 1); if (rc >= 32) { outbuf[0] = rc; outbuf[1] = '\0'; return 1; } return rc; } return -4; } PRIVATE int UC_lastautoGN = 0; PRIVATE int UC_MapGN ARGS2( int, UChndl, int, update_flag) { int i, Gn, found, lasthndl; found = 0; Gn = -1; for (i = 0; i < 4 && Gn < 0; i++) { if (UC_GNhandles[i] < 0) { Gn = i; } else if (UC_GNhandles[i] == UChndl) { Gn = i; found = 1; } } if (found) return Gn; if (Gn >= 0) { UCInfo[UChndl].GN = Gn; UC_GNhandles[Gn] = UChndl; } else { if (UC_lastautoGN == GRAF_MAP) { Gn = IBMPC_MAP; } else { Gn = GRAF_MAP; } UC_lastautoGN = Gn; lasthndl = UC_GNhandles[Gn]; UCInfo[lasthndl].GN = -1; UCInfo[UChndl].GN = Gn; UC_GNhandles[Gn] = UChndl; } CTRACE(tfp, "UC_MapGN: Using %d <- %d (%s)\n", Gn, UChndl, UCInfo[UChndl].MIMEname); UC_con_set_trans(UChndl,Gn,update_flag); return Gn; } PUBLIC int UCTransChar ARGS3( char, ch_in, int, charset_in, int, charset_out) { int unicode, Gn; int rc = -4; int UChndl_in, UChndl_out; int isdefault, trydefault = 0; u16 * ut; int upd = 0; #ifndef UC_NO_SHORTCUTS if (charset_in == charset_out) return (unsigned char)ch_in; #endif /* UC_NO_SHORTCUTS */ if (charset_in < 0) return -11; if ((UChndl_in = LYCharSet_UC[charset_in].UChndl) < 0) return -11; if ((UChndl_out = LYCharSet_UC[charset_out].UChndl) < 0) { if ((UChndl_out = default_UChndl) < 0) return -12; isdefault = 1; } else { isdefault = UCInfo[UChndl_out].replacedesc.isdefault; trydefault = UCInfo[UChndl_out].replacedesc.trydefault; } if (!UCInfo[UChndl_in].num_uni) return -11; if ((Gn = UCInfo[UChndl_in].GN) < 0) { Gn = UC_MapGN(UChndl_in,0); upd = 1; } ut = UCInfo[UChndl_out].unitable; if (!isdefault) { if (ut == UC_current_unitable) { if (upd) { set_inverse_transl(Gn); } } else { rc = UC_con_set_unimap(UChndl_out, 1); if (rc > 0) { set_inverse_transl(Gn); } else if (rc < 0) { return rc; } } } UC_translate = set_translate(Gn); unicode = UC_translate[(unsigned char)ch_in]; if (!isdefault) { rc = conv_uni_to_pc(unicode, 0); if (rc >= 0) return rc; } if ((rc == -4) && (isdefault || trydefault)) { rc = conv_uni_to_pc(unicode, 1); } if ((rc == -4) && !isdefault) { rc = conv_uni_to_pc(0xfffd, 0); } if ((rc == -4) && (isdefault || trydefault)) { rc = conv_uni_to_pc(0xfffd, 1); } return rc; } PUBLIC long int UCTransToUni ARGS2( char, ch_in, int, charset_in) { int unicode, Gn; unsigned char ch_iu; int UChndl_in; ch_iu = (unsigned char)ch_in; #ifndef UC_NO_SHORTCUTS if (charset_in == LATIN1) return ch_iu; if ((unsigned char)ch_in < 128 && (unsigned char)ch_in >= 32) return ch_iu; #endif /* UC_NO_SHORTCUTS */ if (charset_in < 0) return -11; if ((unsigned char)ch_in < 32 && LYCharSet_UC[charset_in].enc != UCT_ENC_8BIT_C0) /* * Don't translate C0 chars except for specific charsets. */ return ch_iu; if ((UChndl_in = LYCharSet_UC[charset_in].UChndl) < 0) return -11; if (!UCInfo[UChndl_in].num_uni) return -11; if ((Gn = UCInfo[UChndl_in].GN) < 0) { Gn = UC_MapGN(UChndl_in,1); } UC_translate = set_translate(Gn); unicode = UC_translate[(unsigned char)ch_in]; return unicode; } PUBLIC int UCReverseTransChar ARGS3( char, ch_out, int, charset_in, int, charset_out) { int Gn; int rc; int UChndl_in, UChndl_out; int isdefault; int i_ch = (unsigned char)ch_out; u16 * ut; #ifndef UC_NO_SHORTCUTS if (charset_in == charset_out) return ch_out; #endif /* UC_NO_SHORTCUTS */ if (charset_in < 0) return -11; if ((UChndl_in = LYCharSet_UC[charset_in].UChndl) < 0) return -11; if (!UCInfo[UChndl_in].num_uni) return -11; if (charset_out < 0) return -12; if ((UChndl_out = LYCharSet_UC[charset_out].UChndl) < 0) { if ((UChndl_out = default_UChndl) < 0) return -12; isdefault = 1; } else { isdefault = UCInfo[UChndl_out].replacedesc.isdefault; } if (!isdefault) { /* * Try to use the inverse table if charset_out is not equivalent * to using just the default table. If it is, it should have * just ASCII chars and trying to back-translate those should * not give anything but themselves. - kw */ ut = UCInfo[UChndl_out].unitable; if (ut == UC_current_unitable) { if ((Gn = UCInfo[UChndl_in].GN) >= 0) { UC_translate = set_translate(Gn); rc = inv_translate[i_ch]; if (rc >= 32) { return rc; } } else { Gn = UC_MapGN(UChndl_in,1); UC_translate = set_translate(Gn); rc = inv_translate[i_ch]; if (rc >= 32) { return rc; } } } } return UCTransChar(ch_out, charset_out, charset_in); } /* * Returns string length, or negative value for error. */ PUBLIC int UCTransCharStr ARGS6( char *, outbuf, int, buflen, char, ch_in, int, charset_in, int, charset_out, int, chk_single_flag) { int unicode, Gn; int rc = -14, src = 0, ignore_err; int UChndl_in, UChndl_out; int isdefault, trydefault = 0; struct unimapdesc_str * repl; u16 * ut; int upd = 0; if (buflen < 2) return -13; #ifndef UC_NO_SHORTCUTS if (chk_single_flag && charset_in == charset_out) { outbuf[0] = ch_in; outbuf[1] = '\0'; return 1; } #endif /* UC_NO_SHORTCUTS */ if (charset_in < 0) return -11; if ((UChndl_in = LYCharSet_UC[charset_in].UChndl) < 0) return -11; if (!UCInfo[UChndl_in].num_uni) return -11; if ((UChndl_out = LYCharSet_UC[charset_out].UChndl) < 0) { if ((UChndl_out = default_UChndl) < 0) return -12; isdefault = 1; } else { isdefault = UCInfo[UChndl_out].replacedesc.isdefault; trydefault = UCInfo[UChndl_out].replacedesc.trydefault; } if ((Gn = UCInfo[UChndl_in].GN) < 0) { Gn = UC_MapGN(UChndl_in, !chk_single_flag); upd = chk_single_flag; } UC_translate = set_translate(Gn); unicode = UC_translate[(unsigned char)ch_in]; if (chk_single_flag) { if (!isdefault) { ut = UCInfo[UChndl_out].unitable; if (ut == UC_current_unitable) { if (upd) set_inverse_transl(Gn); } else { src = UC_con_set_unimap(UChndl_out, 1); if (src > 0) { set_inverse_transl(Gn); } else if (src < 0) { return src; } } } src = conv_uni_to_pc(unicode, isdefault); if (src >= 32) { outbuf[0] = src; outbuf[1] = '\0'; return 1; } } repl = &(UCInfo[UChndl_out].replacedesc); if (!isdefault) { if (repl != UC_current_unitable_str) { con_clear_unimap_str(0); ignore_err = UC_con_set_unimap_str(repl->entry_ct, repl->entries, 0); UC_current_unitable_str = repl; } rc = conv_uni_to_str(outbuf, buflen, unicode, 0); if (rc >= 0) return (strlen(outbuf)); } if (trydefault && chk_single_flag) { src = conv_uni_to_pc(unicode, 1); if (src >= 32) { outbuf[0] = src; outbuf[1] = '\0'; return 1; } } if (isdefault || trydefault) { rc = conv_uni_to_str(outbuf, buflen, unicode, 1); if (rc >= 0) return (strlen(outbuf)); } if (rc == -4) { if (!isdefault) rc = conv_uni_to_str(outbuf, buflen, 0xfffd, 0); if ((rc == -4) && (isdefault || trydefault)) rc = conv_uni_to_str(outbuf, buflen, 0xfffd, 1); if (rc >= 0) return (strlen(outbuf)); } if (chk_single_flag && src == -4) { if (!isdefault) rc = conv_uni_to_pc(0xfffd, 0); if ((rc == -4) && (isdefault || trydefault)) rc = conv_uni_to_pc(0xfffd, 1); if (rc >= 32) { outbuf[0] = rc; outbuf[1] = '\0'; return 1; } else if (rc <= 0) { outbuf[0] = '\0'; return rc; } return rc; } return -4; } PRIVATE int UC_FindGN_byMIME ARGS1( CONST char *, UC_MIMEcharset) { int i; for (i = 0; i < 4; i++) { if (!strcmp(UC_MIMEcharset,UC_GNsetMIMEnames[i])) { return i; } } return -1; } PUBLIC int UCGetRawUniMode_byLYhndl ARGS1( int, i) { if (i < 0) return 0; return LYCharSet_UC[i].enc; } /* * Get Lynx internal charset handler from MIME name, * return -1 if we got NULL or did not recognize value. * According to RFC, MIME headers should match case-insensitively. */ PUBLIC int UCGetLYhndl_byMIME ARGS1( CONST char *, value) { int i; int LYhndl = -1; char *UC_MIMEcharset = NULL; if (!value || !(*value)) { CTRACE(tfp, "UCGetLYhndl_byMIME: NULL argument instead of MIME name.\n"); return -1; } StrAllocCopy(UC_MIMEcharset, value); LYLowerCase(UC_MIMEcharset); for (i = 0; (i < MAXCHARSETS && i < LYNumCharsets && LYchar_set_names[i]); i++) { if (LYCharSet_UC[i].MIMEname && !strcmp(UC_MIMEcharset, LYCharSet_UC[i].MIMEname)) { return i; } } { /* * Not yet found, try synonyms. - FM */ if (!strcmp(UC_MIMEcharset, "unicode-1-1-utf-8") || !strcmp(UC_MIMEcharset, "utf8")) { /* * Treat these as synonyms for the IANA registered name. - FM */ return UCGetLYhndl_byMIME("utf-8"); } if (!strncmp(UC_MIMEcharset, "iso-2022-jp", 11) || !strcmp(UC_MIMEcharset, "x-euc-jp")) { return UCGetLYhndl_byMIME("euc-jp"); } if (!strcmp(UC_MIMEcharset, "x-shift-jis")) { return UCGetLYhndl_byMIME("shift_jis"); } if (!strcmp(UC_MIMEcharset, "iso-2022-kr")) { return UCGetLYhndl_byMIME("euc-kr"); } if (!strcmp(UC_MIMEcharset, "gb2312") || !strncmp(UC_MIMEcharset, "cn-gb", 5) || !strcmp(UC_MIMEcharset, "iso-2022-cn")) { return UCGetLYhndl_byMIME("euc-cn"); } if (!strcmp(UC_MIMEcharset, "cn-big5")) { return UCGetLYhndl_byMIME("big5"); } if (!strcmp(UC_MIMEcharset, "x-mac-roman") || !strcmp(UC_MIMEcharset, "mac-roman")) { return UCGetLYhndl_byMIME("macintosh"); } if (!strcmp(UC_MIMEcharset, "x-next") || !strcmp(UC_MIMEcharset, "nextstep") || !strcmp(UC_MIMEcharset, "x-nextstep")) { return UCGetLYhndl_byMIME("next"); } if (!strcmp(UC_MIMEcharset, "iso-8859-1-windows-3.1-latin-1") || !strcmp(UC_MIMEcharset, "cp1252") || !strcmp(UC_MIMEcharset, "cp-1252") || !strcmp(UC_MIMEcharset, "ibm1252") || !strcmp(UC_MIMEcharset, "iso-8859-1-windows-3.0-latin-1")) { /* * Treat these as synonyms for windows-1252, which is more * commonly used than the IANA registered name. - FM */ return UCGetLYhndl_byMIME("windows-1252"); } if (!strcmp(UC_MIMEcharset, "iso-8859-2-windows-latin-2") || !strcmp(UC_MIMEcharset, "cp1250") || !strcmp(UC_MIMEcharset, "cp-1250") || !strcmp(UC_MIMEcharset, "ibm1250")) { /* * Treat these as synonyms for windows-1250. - FM */ return UCGetLYhndl_byMIME("windows-1250"); } if ((!strncmp(UC_MIMEcharset, "ibm", 3) || !strncmp(UC_MIMEcharset, "cp-", 3)) && isdigit((unsigned char)UC_MIMEcharset[3]) && isdigit((unsigned char)UC_MIMEcharset[4]) && isdigit((unsigned char)UC_MIMEcharset[5])) { /* * For "ibmNNN<...>" or "cp-NNN", try "cpNNN<...>" * if not yet found. - KW & FM */ char * cptmp = NULL; StrAllocCopy(cptmp, (UC_MIMEcharset + 1)); cptmp[0] = 'c'; cptmp[1] = 'p'; if ((LYhndl = UCGetLYhndl_byMIME(cptmp)) >= 0) { FREE(cptmp); return LYhndl; } /* * Try windows-NNN<...> if not yet found. - FM */ StrAllocCopy(cptmp, "windows-"); StrAllocCat(cptmp, (UC_MIMEcharset + 3)); LYhndl = UCGetLYhndl_byMIME(cptmp); FREE(cptmp); return LYhndl; } if (!strncmp(UC_MIMEcharset, "windows-", 8) && isdigit((unsigned char)UC_MIMEcharset[8]) && isdigit((unsigned char)UC_MIMEcharset[9]) && isdigit((unsigned char)UC_MIMEcharset[10])) { /* * For "windows-NNN<...>", try "cpNNN<...>" - FM */ char * cptmp = NULL; StrAllocCopy(cptmp, (UC_MIMEcharset + 6)); cptmp[0] = 'c'; cptmp[1] = 'p'; LYhndl = UCGetLYhndl_byMIME(cptmp); FREE(cptmp); return LYhndl; } if (!strcmp(UC_MIMEcharset, "koi-8")) { /* accentsoft bugosity */ return UCGetLYhndl_byMIME("koi8-r"); } } /* no more synonyms if come here... */ CTRACE(tfp, "UCGetLYhndl_byMIME: unrecognized MIME name \"%s\"\n", value); return -1; /* returns -1 if no charset found by that MIME name */ } /* * Function UC_setup_LYCharSets_repl() tries to set up a subtable in * LYCharSets[] appropriate for this new charset, for compatibility * with the "old method". Maybe not nice (maybe not even necessary * any more), but it works (as far as it goes..). * * We try to be conservative and only allocate new memory for this * if needed. If not needed, just point to SevenBitApproximations[i]. * [Could do the same for ISO_Latin1[] if it's identical to that, but * would make it even *more* messy than it already is...] * This the only function in this file that knows, or cares, about the * HTMLDTD or details of LYCharSets[] subtables (and therefore somewhat * violates the idea that this file should be independent of those). * As in other places, we rely on ISO_Latin1 being the *first* table * in LYCharSets. - KW */ /* * We need to remember which ones were allocated and which are static. */ PRIVATE CONST char ** remember_allocated_LYCharSets[MAXCHARSETS]; PRIVATE void UCreset_allocated_LYCharSets NOARGS { int i = 0; for (; i < MAXCHARSETS; i++) { remember_allocated_LYCharSets[i] = NULL; } } PRIVATE void UCfree_allocated_LYCharSets NOARGS { int i = 0; for (; i < MAXCHARSETS; i++) { if (remember_allocated_LYCharSets[i] != NULL) { FREE(remember_allocated_LYCharSets[i]); } } } PRIVATE CONST char ** UC_setup_LYCharSets_repl ARGS2( int, UC_charset_in_hndl, unsigned, lowest8) { CONST char **ISO_Latin1 = LYCharSets[0]; CONST char **p; char **prepl; u16 *pp; CONST char **tp; CONST char *s7; CONST char *s8; size_t i; int j, changed; u16 k; u8 *ti; /* * Create a temporary table for reverse lookup of latin1 codes: */ tp = (CONST char **)malloc(96 * sizeof(CONST char *)); if (!tp) return NULL; for (i = 0; i < 96; i++) tp[i] = NULL; ti = (u8 *)malloc(96 * sizeof(u8)); if (!ti) { FREE(tp); return NULL; } for (i = 0; i < 96; i++) ti[i] = 0; pp = UCInfo[UC_charset_in_hndl].unitable; /* * Determine if we have any mapping of a Unicode in the range 160-255 * to an allowed code point > 0x80 in our new charset... * Store any mappings found in ti[]. */ if (UCInfo[UC_charset_in_hndl].num_uni > 0) { for (i = 0; i < 256; i++) { if ((j = UCInfo[UC_charset_in_hndl].unicount[i])) { if ((k = *pp) >= 160 && k < 256 && i >= lowest8) { ti[k-160] = i; } for (; j; j--) { pp++; } } } } { u16 ct; struct unipair_str *list; /* * Determine if we have any mapping of a Unicode in the range * 160-255 to a replacement string for our new charset... * Store any mappings found in tp[]. */ ct = UCInfo[UC_charset_in_hndl].replacedesc.entry_ct; list = UCInfo[UC_charset_in_hndl].replacedesc.entries; while (ct--) { if ((k = list->unicode) >= 160 && k < 256) { tp[k-160] = list->replace_str; } list++; } } /* * Now allocate a new table compatible with LYCharSets[] * and with the HTMLDTD for entities. * We don't know yet whether we'll keep it around. */ prepl = (char **)malloc(HTML_dtd.number_of_entities * sizeof(char *)); if (!prepl) { FREE(tp); FREE(ti); return 0; } p = (CONST char **)prepl; changed = 0; for (i = 0; i < HTML_dtd.number_of_entities; i++, p++) { /* * For each of those entities, we check what the "old method" * ISO_Latin1[] mapping does with them. If it is nothing we * want to use, just point to the SevenBitApproximations[] string. */ s7 = SevenBitApproximations[i]; s8 = ISO_Latin1[i]; *p = s7; if (s8 && (unsigned char)(*s8) >= 160 && strlen(s8) == 1) { /* * We have an entity that is mapped to * one valid eightbit latin1 char. */ if (ti[(unsigned char)(*s8) - 160] >= lowest8 && !(s7[0] == ti[(unsigned char)(*s8) - 160] && s7[1] == '\0')) { /* * ...which in turn is mapped, by our "new method", * to another valid eightbit char for this new * charset: either to itself... */ if (ti[(unsigned char)(*s8) - 160] == (unsigned char)(*s8)) { *p = s8; } else { /* * ...or another byte... */ #ifdef NOTDEFINED *p = (char *)malloc(2*sizeof(char)); if (!*p) { FREE(tp); FREE(ti); FREE(prepl); return NULL; } (*p)[0] = ti[(unsigned char)(*s8) - 160]; (*p)[1] = '\0'; #else /* * Use this instead... make those 1-char strings * into HTAtoms, so they will be cleaned up * at exit... all for the sake of preventing * memory leaks, sigh. */ static char dummy[2]; /* one char dummy string */ dummy[0] = ti[(unsigned char)(*s8) - 160]; *p = HTAtom_name(HTAtom_for(dummy)); #endif /* NOTDEFINED */ } changed = 1; } else if (tp[(unsigned char)(*s8) - 160] && strcmp(s7, tp[(unsigned char)(*s8) - 160])) { /* * ...or which is mapped, by our "new method", * to a replacement string for this new charset. */ *p = tp[(unsigned char)(*s8) - 160]; changed = 1; } } } FREE(tp); FREE(ti); if (!changed) { FREE(prepl); return NULL; } return (CONST char **)prepl; } /* * "New method" meets "Old method" ... */ PRIVATE int UC_Register_with_LYCharSets ARGS4( int, s, CONST char *, UC_MIMEcharset, CONST char *, UC_LYNXcharset, int, lowest_eightbit) { int i, LYhndl, found; CONST char **repl; LYhndl = -1; if (LYNumCharsets == 0) { /* * Initialize here; so whoever changes * LYCharSets.c doesn't have to count... */ for (i = 0; (i < MAXCHARSETS) && LYchar_set_names[i]; i++) { LYNumCharsets = i+1; } } /* * Search by MIME name, (LYchar_set_names may differ...) */ for (i = 0; i < MAXCHARSETS && LYchar_set_names[i] && LYhndl < 0; i++) { if (LYCharSet_UC[i].MIMEname && !strcmp(UC_MIMEcharset, LYCharSet_UC[i].MIMEname)) { LYhndl = i; } } if (LYhndl < 0) { /* not found */ found = 0; if (LYNumCharsets >= MAXCHARSETS) { CTRACE(tfp, "UC_Register_with_LYCharSets: Too many. Ignoring %s/%s.", UC_MIMEcharset, UC_LYNXcharset); return -1; } /* * Add to LYCharSets.c lists. */ LYhndl = LYNumCharsets; LYNumCharsets ++; LYlowest_eightbit[LYhndl] = 999; LYCharSets[LYhndl] = SevenBitApproximations; /* * Hmm, try to be conservative here. */ LYchar_set_names[LYhndl] = UC_LYNXcharset; LYchar_set_names[LYhndl+1] = NULL; /* * Terminating NULL may be looked for by Lynx code. */ } else { found = 1; } LYCharSet_UC[LYhndl].UChndl = s; /* * Can we just copy the pointer? Hope so... */ LYCharSet_UC[LYhndl].MIMEname = UC_MIMEcharset; LYCharSet_UC[LYhndl].enc = UCInfo[s].enc; /* * @@@ We really SHOULD get more info from the table files, * and set relevant flags in the LYCharSet_UC[] entry with * that info... For now, let's try it without. - KW */ if (lowest_eightbit < LYlowest_eightbit[LYhndl]) { LYlowest_eightbit[LYhndl] = lowest_eightbit; } else if (lowest_eightbit > LYlowest_eightbit[LYhndl]) { UCInfo[s].lowest_eight = LYlowest_eightbit[LYhndl]; } if (!found && LYhndl > 0) { repl = UC_setup_LYCharSets_repl(s,UCInfo[s].lowest_eight); if (repl) { LYCharSets[LYhndl] = repl; /* * Remember to FREE at exit. */ remember_allocated_LYCharSets[LYhndl] = repl; } } return LYhndl; } /* * This only sets up the structure - no initialization of the tables * is done here yet. */ PUBLIC void UC_Charset_Setup ARGS8( CONST char *, UC_MIMEcharset, CONST char *, UC_LYNXcharset, u8 *, unicount, u16 *, unitable, int, nnuni, struct unimapdesc_str, replacedesc, int, lowest_eight, int, UC_rawuni) { int s, Gn; int i, status = 0, found; /* * Get (new?) slot. */ found = -1; for (i = 0; i < UCNumCharsets && found < 0; i++) { if (!strcmp(UCInfo[i].MIMEname, UC_MIMEcharset)) { found = i; } } if (found >= 0) { s = found; } else { if (UCNumCharsets >= MAXCHARSETS) { CTRACE(tfp, "UC_Charset_Setup: Too many. Ignoring %s/%s.", UC_MIMEcharset, UC_LYNXcharset); return; } s = UCNumCharsets; UCInfo[s].MIMEname = UC_MIMEcharset; } UCInfo[s].LYNXname = UC_LYNXcharset; UCInfo[s].unicount = unicount; UCInfo[s].unitable = unitable; UCInfo[s].num_uni = nnuni; UCInfo[s].replacedesc = replacedesc; if (replacedesc.isdefault) { default_UChndl = s; } Gn = UC_FindGN_byMIME(UC_MIMEcharset); if (Gn >= 0) UC_GNhandles[Gn] = s; UCInfo[s].GN = Gn; if (UC_rawuni == UCT_ENC_UTF8) lowest_eight = 128; /* cheat here */ UCInfo[s].lowest_eight = lowest_eight; UCInfo[s].enc = UC_rawuni; UCInfo[s].LYhndl = UC_Register_with_LYCharSets(s, UC_MIMEcharset, UC_LYNXcharset, lowest_eight); UCInfo[s].uc_status = status; if (found < 0) UCNumCharsets++; return; } PRIVATE void UCcleanup_mem NOARGS { int i; UCfree_allocated_LYCharSets(); con_clear_unimap_str(0); con_clear_unimap_str(1); con_clear_unimap(0); con_clear_unimap(1); for (i = 1; i < 4; i++) { /* first one is static! */ FREE(inverse_translations[i]); } } PUBLIC void UCInit NOARGS { UCreset_allocated_LYCharSets(); atexit(UCcleanup_mem); UCconsole_map_init(); UC_CHARSET_SETUP; /* us-ascii */ /* 7 bit approximations */ /* * The order of charset names visible in Lynx Options menu * correspond to the order of lines below, * except for CJK and others described in LYCharSet.c */ UC_CHARSET_SETUP_iso_8859_1; /* ISO Latin 1 */ UC_CHARSET_SETUP_cp850; /* DosLatin1 (cp850) */ UC_CHARSET_SETUP_windows_1252; /* WinLatin1 (cp1252) */ UC_CHARSET_SETUP_cp437; /* DosLatinUS (cp437) */ UC_CHARSET_SETUP_dec_mcs; /* DEC Multinational */ UC_CHARSET_SETUP_macintosh; /* Macintosh (8 bit) */ UC_CHARSET_SETUP_next; /* NeXT character set */ UC_CHARSET_SETUP_viscii; /* Vietnamese (VISCII) */ UC_CHARSET_SETUP_iso_8859_2; /* ISO Latin 2 */ UC_CHARSET_SETUP_cp852; /* DosLatin2 (cp852) */ UC_CHARSET_SETUP_windows_1250; /* WinLatin2 (cp1250) */ UC_CHARSET_SETUP_iso_8859_3; /* ISO Latin 3 */ UC_CHARSET_SETUP_iso_8859_4; /* ISO Latin 4 */ UC_CHARSET_SETUP_cp775; /* DosBaltRim (cp775) */ UC_CHARSET_SETUP_windows_1257; /* WinBaltRim (cp1257) */ UC_CHARSET_SETUP_iso_8859_5; /* ISO 8859-5 Cyrillic */ UC_CHARSET_SETUP_cp866; /* DosCyrillic (cp866) */ UC_CHARSET_SETUP_windows_1251; /* WinCyrillic (cp1251) */ UC_CHARSET_SETUP_koi8_r; /* KOI8-R Cyrillic */ UC_CHARSET_SETUP_iso_8859_6; /* ISO 8869-6 Arabic */ UC_CHARSET_SETUP_cp864; /* DosArabic (cp864) */ UC_CHARSET_SETUP_windows_1256; /* WinArabic (cp1256) */ UC_CHARSET_SETUP_iso_8859_7; /* ISO 8859-7 Greek */ UC_CHARSET_SETUP_cp737; /* DosGreek (cp737) */ UC_CHARSET_SETUP_cp869; /* DosGreek2 (cp869) */ UC_CHARSET_SETUP_windows_1253; /* WinGreek (cp1253) */ UC_CHARSET_SETUP_iso_8859_8; /* ISO 8859-8 Hebrew */ UC_CHARSET_SETUP_cp862; /* DosHebrew (cp862) */ UC_CHARSET_SETUP_windows_1255; /* WinHebrew (cp1255) */ UC_CHARSET_SETUP_iso_8859_9; /* ISO 8859-9 (Latin 5) */ UC_CHARSET_SETUP_iso_8859_10; /* ISO 8859-10 */ UC_CHARSET_SETUP_utf_8; /* UNICODE UTF-8 */ UC_CHARSET_SETUP_mnemonic_ascii_0; /* RFC 1345 w/o Intro */ UC_CHARSET_SETUP_mnemonic; /* RFC 1345 Mnemonic */ #ifdef NOTDEFINED UC_CHARSET_SETUP_mnem; #endif /* NOTDEFINED */ /* * To add synonyms for any charset name * check function UCGetLYhndl_byMIME in this file. */ } /* * Safe variant of UCGetLYhndl_byMIME, with blind recovery from typo * in user input: lynx.cfg, userdefs.h, switches from command line. */ PUBLIC int safeUCGetLYhndl_byMIME ARGS1 (CONST char *, value) { int i = UCGetLYhndl_byMIME(value); if (i == -1) { /* was user's typo or not yet recognized value */ i = LATIN1; /* error recovery? */ CTRACE(tfp, "safeUCGetLYhndl_byMIME: ISO-8859-1 assumed.\n"); } return(i); }