diff options
Diffstat (limited to 'modules/tibetan/tibetan-fc.c')
| -rw-r--r-- | modules/tibetan/tibetan-fc.c | 100 |
1 files changed, 50 insertions, 50 deletions
diff --git a/modules/tibetan/tibetan-fc.c b/modules/tibetan/tibetan-fc.c index b2e12aff..e4f882a8 100644 --- a/modules/tibetan/tibetan-fc.c +++ b/modules/tibetan/tibetan-fc.c @@ -2,9 +2,9 @@ * tibetan-fc.c: Shaper for Tibetan script * * Copyright (C) 2005 DIT, Government of Bhutan <http://www.dit.gov.bt> - * Contact person : Pema Geyleg <pema_geyleg@druknet.bt> + * Contact person : Pema Geyleg <pema_geyleg@druknet.bt> * - * Based on code from khmer shapers developed by Jens Herden + * Based on code from khmer shapers developed by Jens Herden * <jens@tibetanos.inf > and Javier Sola <javier@tibetanos.info> * * Based on code from other shapers @@ -15,8 +15,8 @@ * Copyright (C) 2001, 2002 IBM Corporation * Author: Eric Mader <mader@jtcsv.com> * - * The first module for Tibetan shaper was developed by Mr. Karunakar under - * PanLocalization project. + * The first module for Tibetan shaper was developed by Mr. Karunakar under + * PanLocalization project. * Mr. Chris Fynn, Mr.Javier Sola, Mr. Namgay Thinley were involved * while developing this shaper. * @@ -98,18 +98,18 @@ static PangoEngineInfo script_engines[] = -// Vocabulary -// Base -> A consonant in its full (not subscript) form. It is the +// Vocabulary +// Base -> A consonant in its full (not subscript) form. It is the // center of the syllable, it can be souranded by subjoined consonants, vowels, // signs... but there is only one base in a stack, it has to be coded as -// the first character of the syllable.Included here are also groups of base + subjoined -// which are represented by one single code point in unicode (e.g. 0F43) Also other characters that might take -// subjoined consonants or other combining characters. -// Subjoined -> Subjoined consonants and groups of subjoined consonants which have a single code-point +// the first character of the syllable.Included here are also groups of base + subjoined +// which are represented by one single code point in unicode (e.g. 0F43) Also other characters that might take +// subjoined consonants or other combining characters. +// Subjoined -> Subjoined consonants and groups of subjoined consonants which have a single code-point // to repersent the group (even if each subjoined consonant is represented independently // by anothe code-point -// Tsa Phru --> Tsa Phru character, Bhutanese people will always place it right after the base, but sometimes, due to -// "normalization" +// Tsa Phru --> Tsa Phru character, Bhutanese people will always place it right after the base, but sometimes, due to +// "normalization" // is placed after all the subjoined consonants, and it is also permitted there. // A Chung Vowel lengthening mark --> . 0F71 It is placed after the base and any subjoined consonants but before any vowels // Precomposed Sanskrit vowels --> The are combinations of subjoined consonants + vowels that have been assigned @@ -117,13 +117,13 @@ static PangoEngineInfo script_engines[] = // They are avoided, and users are encouraged to use the combination of code-points that // represents the same sound instead of using this combined characters. This is included here // for compatibility with possible texts that use them (they are not in the Dzongkha keyboard). -// Halanta -> The Halanta or Virama character 0F84 indicates that a consonant should not use its inheernt vowel, +// Halanta -> The Halanta or Virama character 0F84 indicates that a consonant should not use its inheernt vowel, // in spite of not having other vowels present. It is usually placed immediatly after a base consonant, // but in some special cases it can also be placed after a subjoined consonant, so this is also // permitted in this algorithm. (Halanta is always displayed in Tibetan not used as a connecting char) // // Subjoined vowels -> Dependent vowels (matras) placed below the base and below all subjoined consonants. There -// might be as much as three subjoined vowels in a given stack (only one in general text, but up +// might be as much as three subjoined vowels in a given stack (only one in general text, but up // to three for abreviations, they have to be permitted). // Superscript vowels -> There are three superscript vowels, and they can be repeated or combined (up to three // times. They can combine with subjoined vowels, and are always coded after these. @@ -137,19 +137,19 @@ static PangoEngineInfo script_engines[] = // Digits -> Digits are not considered as non-combining characters because there are a few characters which // combine with them, so they have to be considered independently. // Digit combining marks -> dependent marks that combine with digits. -// +// // TODO // There are a number of characters in the CJK block that are used in Tibetan script, two of these are symbols // are used as bases for combining glyphs, and have not been encoded in Tibetan. As these characters are outside // of the tibetan block, they have not been treated in this program. - + enum TibetanCharClassValues { CC_RESERVED = 0, //Non Combining Characters CC_BASE = 1, // Base Consonants, Base Consonants with Subjoined attached in code point, Sanskrit base marks CC_SUBJOINED = 2, // Subjoined Consonats, combination of more than Subjoined Consonants in the code point - CC_TSA_PHRU = 3, // Tsa-Phru character 0F39 + CC_TSA_PHRU = 3, // Tsa-Phru character 0F39 CC_A_CHUNG = 4, // Vowel Lenthening a-chung mark 0F71 CC_COMP_SANSKRIT = 5, // Precomposed Sanskrit vowels including Subjoined characters and vowels CC_HALANTA = 6, // Halanta Character 0F84 @@ -197,24 +197,24 @@ enum // simple classes, they are used in the statetable (in this file) to control the length of a syllable // they are also used to know where a character should be placed (location in reference to the base character) // and also to know if a character, when independtly displayed, should be displayed with a dotted-circle to - // indicate error in syllable construction - _xx = CC_RESERVED, - _ba = CC_BASE, - _sj = CC_SUBJOINED | CF_DOTTED_CIRCLE | CF_POS_BELOW, - _tp = CC_TSA_PHRU | CF_DOTTED_CIRCLE | CF_POS_ABOVE, - _ac = CC_A_CHUNG | CF_DOTTED_CIRCLE | CF_POS_BELOW, - _cs = CC_COMP_SANSKRIT | CF_DOTTED_CIRCLE | CF_POS_BELOW, - _ha = CC_HALANTA | CF_DOTTED_CIRCLE | CF_POS_BELOW, - _bv = CC_BELOW_VOWEL | CF_DOTTED_CIRCLE | CF_POS_BELOW, - _av = CC_ABOVE_VOWEL | CF_DOTTED_CIRCLE | CF_POS_ABOVE, - _an = CC_ANUSVARA | CF_DOTTED_CIRCLE | CF_POS_ABOVE, - _cb = CC_CANDRABINDU | CF_DOTTED_CIRCLE | CF_POS_ABOVE, - _vs = CC_VISARGA | CF_DOTTED_CIRCLE| CF_POS_AFTER, - _as = CC_ABOVE_S_MARK | CF_DOTTED_CIRCLE | CF_POS_ABOVE, - _bs = CC_BELOW_S_MARK | CF_DOTTED_CIRCLE | CF_POS_BELOW, - _di = CC_DIGIT | CF_DIGIT, - _pd = CC_PRE_DIGIT_MARK | CF_DOTTED_CIRCLE | CF_PREDIGIT | CF_POS_BEFORE , - _bd = CC_POST_BELOW_DIGIT_M | CF_DOTTED_CIRCLE | CF_POS_AFTER + // indicate error in syllable construction + _xx = CC_RESERVED, + _ba = CC_BASE, + _sj = CC_SUBJOINED | CF_DOTTED_CIRCLE | CF_POS_BELOW, + _tp = CC_TSA_PHRU | CF_DOTTED_CIRCLE | CF_POS_ABOVE, + _ac = CC_A_CHUNG | CF_DOTTED_CIRCLE | CF_POS_BELOW, + _cs = CC_COMP_SANSKRIT | CF_DOTTED_CIRCLE | CF_POS_BELOW, + _ha = CC_HALANTA | CF_DOTTED_CIRCLE | CF_POS_BELOW, + _bv = CC_BELOW_VOWEL | CF_DOTTED_CIRCLE | CF_POS_BELOW, + _av = CC_ABOVE_VOWEL | CF_DOTTED_CIRCLE | CF_POS_ABOVE, + _an = CC_ANUSVARA | CF_DOTTED_CIRCLE | CF_POS_ABOVE, + _cb = CC_CANDRABINDU | CF_DOTTED_CIRCLE | CF_POS_ABOVE, + _vs = CC_VISARGA | CF_DOTTED_CIRCLE| CF_POS_AFTER, + _as = CC_ABOVE_S_MARK | CF_DOTTED_CIRCLE | CF_POS_ABOVE, + _bs = CC_BELOW_S_MARK | CF_DOTTED_CIRCLE | CF_POS_BELOW, + _di = CC_DIGIT | CF_DIGIT, + _pd = CC_PRE_DIGIT_MARK | CF_DOTTED_CIRCLE | CF_PREDIGIT | CF_POS_BEFORE , + _bd = CC_POST_BELOW_DIGIT_M | CF_DOTTED_CIRCLE | CF_POS_AFTER }; @@ -246,8 +246,8 @@ static const TibetanCharClass tibetanCharClasses[] = // 0 1 2 3 4 5 6 7 8 9 a b c d e f _xx, _ba, _xx, _xx, _ba, _ba, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, // 0F00 - 0F0F 0 _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _bd, _bd, _xx, _xx, _xx, _xx, _xx, _xx, // 0F10 - 0F1F 1 - _di, _di, _di, _di, _di, _di, _di, _di, _di, _di, _xx, _xx, _xx, _xx, _xx, _xx, // 0F20 - 0F2F 2 - _xx, _xx, _xx, _xx, _xx, _bs, _xx, _bs, _xx, _tp, _xx, _xx, _xx, _xx, _bd, _pd, // 0F30 - 0F3F 3 + _di, _di, _di, _di, _di, _di, _di, _di, _di, _di, _xx, _xx, _xx, _xx, _xx, _xx, // 0F20 - 0F2F 2 + _xx, _xx, _xx, _xx, _xx, _bs, _xx, _bs, _xx, _tp, _xx, _xx, _xx, _xx, _bd, _pd, // 0F30 - 0F3F 3 _ba, _ba, _ba, _ba, _ba, _ba, _ba, _ba, _xx, _ba, _ba, _ba, _ba, _ba, _ba, _ba, // 0F40 - 0F4F 4 _ba, _ba, _ba, _ba, _ba, _ba, _ba, _ba, _ba, _ba, _ba, _ba, _ba, _ba, _ba, _ba, // 0F50 - 0F5F 5 _ba, _ba, _ba, _ba, _ba, _ba, _ba, _ba, _ba, _ba, _ba, _xx, _xx, _xx, _xx, _xx, // 0F60 - 0F6F 6 @@ -259,7 +259,7 @@ static const TibetanCharClass tibetanCharClasses[] = _xx, _xx, _xx, _xx, _xx, _xx, _bs, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, // 0FC0 - 0FCF c _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx,// 0FD0 - 0FDF d _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, // 0FE0 - 0FEF e - _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, // 0FF0 - 0FFF f + _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, // 0FF0 - 0FFF f }; /* this define must reflect the range of tibetanCharClasses */ @@ -285,9 +285,9 @@ static const gint8 tibetanStateTable[][CC_COUNT] = //xx ba sj tp ac cs ha bv av an cb vs as bs di pd bd { 1, 2, 4, 3, 8, 7, 9, 10, 14, 13, 17, 18, 19, 19, 20, 21, 21,}, // 0 - ground state {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,}, // 1 - exit state (or sign to the right of the syllable) - {-1, -1, 4, 3, 8, 7, 9, 10, 14, 13, 17, 18, 19, 19, -1, -1, -1,}, // 2 - Base consonant + {-1, -1, 4, 3, 8, 7, 9, 10, 14, 13, 17, 18, 19, 19, -1, -1, -1,}, // 2 - Base consonant {-1, -1, 5, -1, 8, 7, -1, 10, 14, 13, 17, 18, 19, 19, -1, -1, -1,}, // 3 - Tsa phru after base - {-1, -1, 4, 6, 8, 7, 9, 10, 14, 13, 17, 18, 19, 19, -1, -1, -1,}, // 4 - Subjoined consonant after base + {-1, -1, 4, 6, 8, 7, 9, 10, 14, 13, 17, 18, 19, 19, -1, -1, -1,}, // 4 - Subjoined consonant after base {-1, -1, 5, -1, 8, 7, -1, 10, 14, 13, 17, 18, 19, 19, -1, -1, -1,}, // 5 - Subjoined consonant after tsa phru {-1, -1, -1, -1, 8, 7, -1, 10, 14, 13, 17, 18, 19, 19, -1, -1, -1,}, // 6 - Tsa phru after subjoined consonant {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 19, 19, -1, -1, -1,}, // 7 - Pre Composed Sanskrit @@ -295,15 +295,15 @@ static const gint8 tibetanStateTable[][CC_COUNT] = {-1, -1, -1, -1, -1, -1, -1, -1, 14, 13, 17, -1, 19, 19, -1, -1, -1,}, // 9 - Halanta {-1, -1, -1, -1, -1, -1, -1, 11, 14, 13, 17, 18, 19, 19, -1, -1, -1,}, // 10 - below vowel 1 {-1, -1, -1, -1, -1, -1, -1, 12, 14, 13, 17, 18, 19, 19, -1, -1, -1,}, // 11 - below vowel 2 - {-1, -1, -1, -1, -1, -1, -1, -1, 14, 13, 17, 18, 19, 19, -1, -1, -1,}, // 12 - below vowel 3 + {-1, -1, -1, -1, -1, -1, -1, -1, 14, 13, 17, 18, 19, 19, -1, -1, -1,}, // 12 - below vowel 3 {-1, -1, -1, -1, -1, -1, -1, -1, 14, 17, 17, 18, 19, 19, -1, -1, -1,}, // 13 - Anusvara before vowel {-1, -1, -1, -1, -1, -1, -1, -1, 15, 17, 17, 18, 19, 19, -1, -1, -1,}, // 14 - above vowel 1 {-1, -1, -1, -1, -1, -1, -1, -1, 16, 17, 17, 18, 19, 19, -1, -1, -1,}, // 15 - above vowel 2 {-1, -1, -1, -1, -1, -1, -1, -1, -1, 17, 17, 18, 19, 19, -1, -1, -1,}, // 16 - above vowel 3 - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 18, 19, 19, -1, -1, -1,}, // 17 - Anusvara or Candrabindu after vowel - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 19, 19, -1, -1, -1,}, // 18 - Visarga + {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 18, 19, 19, -1, -1, -1,}, // 17 - Anusvara or Candrabindu after vowel + {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 19, 19, -1, -1, -1,}, // 18 - Visarga {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,}, // 19 - strss mark - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 21, 21,}, // 20 - digit + {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 21, 21,}, // 20 - digit {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,}, // 21 - digit mark }; @@ -532,19 +532,19 @@ tibetan_engine_shape (PangoEngineShape *engine, } /* If it encounters a digit followed by number pre combining mark, then reorder the two characters - * coeng Ro if they are present + * coeng Ro if they are present */ for (i = cursor; i < syllable; i += 1) { charClass = get_char_class (wcs[i]); - if ((charClass & CF_DIGIT ) + if ((charClass & CF_DIGIT ) && ( get_char_class (wcs[i+1]) & CF_PREDIGIT)) { pango_ot_buffer_add_glyph (buffer, get_index (fc_font, C_PRE_NUMBER_MARK), pref_p, p - text); p = g_utf8_next_char (p); pango_ot_buffer_add_glyph (buffer, get_index (fc_font, wcs[i]), pref_p, p - text); - i += 1; + i += 1; } else { switch (charClass & CF_POS_MASK) { @@ -555,7 +555,7 @@ tibetan_engine_shape (PangoEngineShape *engine, case CF_POS_AFTER : pango_ot_buffer_add_glyph (buffer, get_index (fc_font, wcs[i]), pstf_p, p - text); break; - + case CF_POS_BELOW : pango_ot_buffer_add_glyph (buffer, get_index (fc_font, wcs[i]), blwf_p, p - text); break; @@ -565,8 +565,8 @@ tibetan_engine_shape (PangoEngineShape *engine, pango_ot_buffer_add_glyph (buffer, get_index (fc_font, wcs[i]), default_p, p - text); break; } /* switch */ - } - + } + p = g_utf8_next_char (p); } /* for */ |