diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-ot-shape-complex-myanmar.cc')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-ot-shape-complex-myanmar.cc | 344 |
1 files changed, 92 insertions, 252 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-ot-shape-complex-myanmar.cc b/src/3rdparty/harfbuzz-ng/src/hb-ot-shape-complex-myanmar.cc index 5ea1dbff27..fc3490d716 100644 --- a/src/3rdparty/harfbuzz-ng/src/hb-ot-shape-complex-myanmar.cc +++ b/src/3rdparty/harfbuzz-ng/src/hb-ot-shape-complex-myanmar.cc @@ -24,11 +24,11 @@ * Google Author(s): Behdad Esfahbod */ -#include "hb-ot-shape-complex-indic-private.hh" +#include "hb.hh" -/* buffer var allocations */ -#define myanmar_category() complex_var_u8_0() /* myanmar_category_t */ -#define myanmar_position() complex_var_u8_1() /* myanmar_position_t */ +#ifndef HB_NO_OT_SHAPE + +#include "hb-ot-shape-complex-myanmar.hh" /* @@ -36,11 +36,11 @@ */ static const hb_tag_t -basic_features[] = +myanmar_basic_features[] = { /* * Basic features. - * These features are applied in order, one at a time, after initial_reordering. + * These features are applied in order, one at a time, after reordering. */ HB_TAG('r','p','h','f'), HB_TAG('p','r','e','f'), @@ -48,42 +48,26 @@ basic_features[] = HB_TAG('p','s','t','f'), }; static const hb_tag_t -other_features[] = +myanmar_other_features[] = { /* * Other features. - * These features are applied all at once, after final_reordering. + * These features are applied all at once, after clearing syllables. */ HB_TAG('p','r','e','s'), HB_TAG('a','b','v','s'), HB_TAG('b','l','w','s'), HB_TAG('p','s','t','s'), - /* Positioning features, though we don't care about the types. */ - HB_TAG('d','i','s','t'), - /* Pre-release version of Windows 8 Myanmar font had abvm,blwm - * features. The released Windows 8 version of the font (as well - * as the released spec) used 'mark' instead. The Windows 8 - * shaper however didn't apply 'mark' but did apply 'mkmk'. - * Perhaps it applied abvm/blwm. This was fixed in a Windows 8 - * update, so now it applies mark/mkmk. We are guessing that - * it still applies abvm/blwm too. - */ - HB_TAG('a','b','v','m'), - HB_TAG('b','l','w','m'), }; static void -setup_syllables (const hb_ot_shape_plan_t *plan, +setup_syllables_myanmar (const hb_ot_shape_plan_t *plan, + hb_font_t *font, + hb_buffer_t *buffer); +static void +reorder_myanmar (const hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer); -static void -initial_reordering (const hb_ot_shape_plan_t *plan, - hb_font_t *font, - hb_buffer_t *buffer); -static void -final_reordering (const hb_ot_shape_plan_t *plan, - hb_font_t *font, - hb_buffer_t *buffer); static void collect_features_myanmar (hb_ot_shape_planner_t *plan) @@ -91,193 +75,49 @@ collect_features_myanmar (hb_ot_shape_planner_t *plan) hb_ot_map_builder_t *map = &plan->map; /* Do this before any lookups have been applied. */ - map->add_gsub_pause (setup_syllables); + map->add_gsub_pause (setup_syllables_myanmar); - map->add_global_bool_feature (HB_TAG('l','o','c','l')); + map->enable_feature (HB_TAG('l','o','c','l')); /* The Indic specs do not require ccmp, but we apply it here since if * there is a use of it, it's typically at the beginning. */ - map->add_global_bool_feature (HB_TAG('c','c','m','p')); + map->enable_feature (HB_TAG('c','c','m','p')); + + map->add_gsub_pause (reorder_myanmar); - map->add_gsub_pause (initial_reordering); - for (unsigned int i = 0; i < ARRAY_LENGTH (basic_features); i++) + for (unsigned int i = 0; i < ARRAY_LENGTH (myanmar_basic_features); i++) { - map->add_feature (basic_features[i], 1, F_GLOBAL | F_MANUAL_ZWJ); + map->enable_feature (myanmar_basic_features[i], F_MANUAL_ZWJ); map->add_gsub_pause (nullptr); } - map->add_gsub_pause (final_reordering); - for (unsigned int i = 0; i < ARRAY_LENGTH (other_features); i++) - map->add_feature (other_features[i], 1, F_GLOBAL | F_MANUAL_ZWJ); + + map->add_gsub_pause (_hb_clear_syllables); + + for (unsigned int i = 0; i < ARRAY_LENGTH (myanmar_other_features); i++) + map->enable_feature (myanmar_other_features[i], F_MANUAL_ZWJ); } static void override_features_myanmar (hb_ot_shape_planner_t *plan) { - plan->map.add_feature (HB_TAG('l','i','g','a'), 0, F_GLOBAL); + plan->map.disable_feature (HB_TAG('l','i','g','a')); } -enum syllable_type_t { - consonant_syllable, - punctuation_cluster, - broken_cluster, - non_myanmar_cluster, +enum myanmar_syllable_type_t { + myanmar_consonant_syllable, + myanmar_punctuation_cluster, + myanmar_broken_cluster, + myanmar_non_myanmar_cluster, }; #include "hb-ot-shape-complex-myanmar-machine.hh" -/* Note: This enum is duplicated in the -machine.rl source file. - * Not sure how to avoid duplication. */ -enum myanmar_category_t { - OT_As = 18, /* Asat */ - OT_D0 = 20, /* Digit zero */ - OT_DB = OT_N, /* Dot below */ - OT_GB = OT_PLACEHOLDER, - OT_MH = 21, /* Various consonant medial types */ - OT_MR = 22, /* Various consonant medial types */ - OT_MW = 23, /* Various consonant medial types */ - OT_MY = 24, /* Various consonant medial types */ - OT_PT = 25, /* Pwo and other tones */ - OT_VAbv = 26, - OT_VBlw = 27, - OT_VPre = 28, - OT_VPst = 29, - OT_VS = 30, /* Variation selectors */ - OT_P = 31, /* Punctuation */ - OT_D = 32, /* Digits except zero */ -}; - - -static inline bool -is_one_of (const hb_glyph_info_t &info, unsigned int flags) -{ - /* If it ligated, all bets are off. */ - if (_hb_glyph_info_ligated (&info)) return false; - return !!(FLAG_UNSAFE (info.myanmar_category()) & flags); -} - -static inline bool -is_consonant (const hb_glyph_info_t &info) -{ - return is_one_of (info, CONSONANT_FLAGS); -} - - -static inline void -set_myanmar_properties (hb_glyph_info_t &info) -{ - hb_codepoint_t u = info.codepoint; - unsigned int type = hb_indic_get_categories (u); - indic_category_t cat = (indic_category_t) (type & 0x7Fu); - indic_position_t pos = (indic_position_t) (type >> 8); - - /* Myanmar - * http://www.microsoft.com/typography/OpenTypeDev/myanmar/intro.htm#analyze - */ - if (unlikely (hb_in_range<hb_codepoint_t> (u, 0xFE00u, 0xFE0Fu))) - cat = (indic_category_t) OT_VS; - - switch (u) - { - case 0x104Eu: - cat = (indic_category_t) OT_C; /* The spec says C, IndicSyllableCategory doesn't have. */ - break; - - case 0x002Du: case 0x00A0u: case 0x00D7u: case 0x2012u: - case 0x2013u: case 0x2014u: case 0x2015u: case 0x2022u: - case 0x25CCu: case 0x25FBu: case 0x25FCu: case 0x25FDu: - case 0x25FEu: - cat = (indic_category_t) OT_GB; - break; - - case 0x1004u: case 0x101Bu: case 0x105Au: - cat = (indic_category_t) OT_Ra; - break; - - case 0x1032u: case 0x1036u: - cat = (indic_category_t) OT_A; - break; - - case 0x1039u: - cat = (indic_category_t) OT_H; - break; - - case 0x103Au: - cat = (indic_category_t) OT_As; - break; - - case 0x1041u: case 0x1042u: case 0x1043u: case 0x1044u: - case 0x1045u: case 0x1046u: case 0x1047u: case 0x1048u: - case 0x1049u: case 0x1090u: case 0x1091u: case 0x1092u: - case 0x1093u: case 0x1094u: case 0x1095u: case 0x1096u: - case 0x1097u: case 0x1098u: case 0x1099u: - cat = (indic_category_t) OT_D; - break; - - case 0x1040u: - cat = (indic_category_t) OT_D; /* XXX The spec says D0, but Uniscribe doesn't seem to do. */ - break; - - case 0x103Eu: case 0x1060u: - cat = (indic_category_t) OT_MH; - break; - - case 0x103Cu: - cat = (indic_category_t) OT_MR; - break; - - case 0x103Du: case 0x1082u: - cat = (indic_category_t) OT_MW; - break; - - case 0x103Bu: case 0x105Eu: case 0x105Fu: - cat = (indic_category_t) OT_MY; - break; - - case 0x1063u: case 0x1064u: case 0x1069u: case 0x106Au: - case 0x106Bu: case 0x106Cu: case 0x106Du: case 0xAA7Bu: - cat = (indic_category_t) OT_PT; - break; - - case 0x1038u: case 0x1087u: case 0x1088u: case 0x1089u: - case 0x108Au: case 0x108Bu: case 0x108Cu: case 0x108Du: - case 0x108Fu: case 0x109Au: case 0x109Bu: case 0x109Cu: - cat = (indic_category_t) OT_SM; - break; - - case 0x104Au: case 0x104Bu: - cat = (indic_category_t) OT_P; - break; - - case 0xAA74u: case 0xAA75u: case 0xAA76u: - /* https://github.com/roozbehp/unicode-data/issues/3 */ - cat = (indic_category_t) OT_C; - break; - } - - if (cat == OT_M) - { - switch ((int) pos) - { - case POS_PRE_C: cat = (indic_category_t) OT_VPre; - pos = POS_PRE_M; break; - case POS_ABOVE_C: cat = (indic_category_t) OT_VAbv; break; - case POS_BELOW_C: cat = (indic_category_t) OT_VBlw; break; - case POS_POST_C: cat = (indic_category_t) OT_VPst; break; - } - } - - info.myanmar_category() = (myanmar_category_t) cat; - info.myanmar_position() = pos; -} - - - static void setup_masks_myanmar (const hb_ot_shape_plan_t *plan HB_UNUSED, - hb_buffer_t *buffer, - hb_font_t *font HB_UNUSED) + hb_buffer_t *buffer, + hb_font_t *font HB_UNUSED) { HB_BUFFER_ALLOCATE_VAR (buffer, myanmar_category); HB_BUFFER_ALLOCATE_VAR (buffer, myanmar_position); @@ -292,11 +132,11 @@ setup_masks_myanmar (const hb_ot_shape_plan_t *plan HB_UNUSED, } static void -setup_syllables (const hb_ot_shape_plan_t *plan HB_UNUSED, - hb_font_t *font HB_UNUSED, - hb_buffer_t *buffer) +setup_syllables_myanmar (const hb_ot_shape_plan_t *plan HB_UNUSED, + hb_font_t *font HB_UNUSED, + hb_buffer_t *buffer) { - find_syllables (buffer); + find_syllables_myanmar (buffer); foreach_syllable (buffer, start, end) buffer->unsafe_to_break (start, end); } @@ -312,7 +152,7 @@ compare_myanmar_order (const hb_glyph_info_t *pa, const hb_glyph_info_t *pb) /* Rules from: - * http://www.microsoft.com/typography/OpenTypeDev/myanmar/intro.htm */ + * https://docs.microsoft.com/en-us/typography/script-development/myanmar */ static void initial_reordering_consonant_syllable (hb_buffer_t *buffer, @@ -374,6 +214,11 @@ initial_reordering_consonant_syllable (hb_buffer_t *buffer, { continue; } + if (info[i].myanmar_category() == OT_VS) + { + info[i].myanmar_position() = info[i - 1].myanmar_position(); + continue; + } if (pos == POS_AFTER_MAIN && info[i].myanmar_category() == OT_VBlw) { @@ -394,7 +239,7 @@ initial_reordering_consonant_syllable (hb_buffer_t *buffer, } if (pos == POS_BELOW_C && info[i].myanmar_category() != OT_A) { - pos = POS_AFTER_SUB; + pos = POS_AFTER_SUB; info[i].myanmar_position() = pos; continue; } @@ -407,36 +252,40 @@ initial_reordering_consonant_syllable (hb_buffer_t *buffer, } static void -initial_reordering_syllable (const hb_ot_shape_plan_t *plan, - hb_face_t *face, - hb_buffer_t *buffer, - unsigned int start, unsigned int end) +reorder_syllable_myanmar (const hb_ot_shape_plan_t *plan HB_UNUSED, + hb_face_t *face HB_UNUSED, + hb_buffer_t *buffer, + unsigned int start, unsigned int end) { - syllable_type_t syllable_type = (syllable_type_t) (buffer->info[start].syllable() & 0x0F); + myanmar_syllable_type_t syllable_type = (myanmar_syllable_type_t) (buffer->info[start].syllable() & 0x0F); switch (syllable_type) { - case broken_cluster: /* We already inserted dotted-circles, so just call the consonant_syllable. */ - case consonant_syllable: + case myanmar_broken_cluster: /* We already inserted dotted-circles, so just call the consonant_syllable. */ + case myanmar_consonant_syllable: initial_reordering_consonant_syllable (buffer, start, end); break; - case punctuation_cluster: - case non_myanmar_cluster: + case myanmar_punctuation_cluster: + case myanmar_non_myanmar_cluster: break; } } static inline void -insert_dotted_circles (const hb_ot_shape_plan_t *plan HB_UNUSED, - hb_font_t *font, - hb_buffer_t *buffer) +insert_dotted_circles_myanmar (const hb_ot_shape_plan_t *plan HB_UNUSED, + hb_font_t *font, + hb_buffer_t *buffer) { - /* Note: This loop is extra overhead, but should not be measurable. */ + if (unlikely (buffer->flags & HB_BUFFER_FLAG_DO_NOT_INSERT_DOTTED_CIRCLE)) + return; + + /* Note: This loop is extra overhead, but should not be measurable. + * TODO Use a buffer scratch flag to remove the loop. */ bool has_broken_syllables = false; unsigned int count = buffer->len; hb_glyph_info_t *info = buffer->info; for (unsigned int i = 0; i < count; i++) - if ((info[i].syllable() & 0x0F) == broken_cluster) + if ((info[i].syllable() & 0x0F) == myanmar_broken_cluster) { has_broken_syllables = true; break; @@ -458,11 +307,11 @@ insert_dotted_circles (const hb_ot_shape_plan_t *plan HB_UNUSED, buffer->idx = 0; unsigned int last_syllable = 0; - while (buffer->idx < buffer->len && !buffer->in_error) + while (buffer->idx < buffer->len && buffer->successful) { unsigned int syllable = buffer->cur().syllable(); - syllable_type_t syllable_type = (syllable_type_t) (syllable & 0x0F); - if (unlikely (last_syllable != syllable && syllable_type == broken_cluster)) + myanmar_syllable_type_t syllable_type = (myanmar_syllable_type_t) (syllable & 0x0F); + if (unlikely (last_syllable != syllable && syllable_type == myanmar_broken_cluster)) { last_syllable = syllable; @@ -476,72 +325,63 @@ insert_dotted_circles (const hb_ot_shape_plan_t *plan HB_UNUSED, else buffer->next_glyph (); } - buffer->swap_buffers (); } static void -initial_reordering (const hb_ot_shape_plan_t *plan, - hb_font_t *font, - hb_buffer_t *buffer) +reorder_myanmar (const hb_ot_shape_plan_t *plan, + hb_font_t *font, + hb_buffer_t *buffer) { - insert_dotted_circles (plan, font, buffer); + insert_dotted_circles_myanmar (plan, font, buffer); foreach_syllable (buffer, start, end) - initial_reordering_syllable (plan, font->face, buffer, start, end); -} - -static void -final_reordering (const hb_ot_shape_plan_t *plan, - hb_font_t *font HB_UNUSED, - hb_buffer_t *buffer) -{ - hb_glyph_info_t *info = buffer->info; - unsigned int count = buffer->len; - - /* Zero syllables now... */ - for (unsigned int i = 0; i < count; i++) - info[i].syllable() = 0; + reorder_syllable_myanmar (plan, font->face, buffer, start, end); HB_BUFFER_DEALLOCATE_VAR (buffer, myanmar_category); HB_BUFFER_DEALLOCATE_VAR (buffer, myanmar_position); } -/* Uniscribe seems to have a shaper for 'mymr' that is like the - * generic shaper, except that it zeros mark advances GDEF_LATE. */ -const hb_ot_complex_shaper_t _hb_ot_complex_shaper_myanmar_old = +const hb_ot_complex_shaper_t _hb_ot_complex_shaper_myanmar = { - nullptr, /* collect_features */ - nullptr, /* override_features */ + collect_features_myanmar, + override_features_myanmar, nullptr, /* data_create */ nullptr, /* data_destroy */ nullptr, /* preprocess_text */ nullptr, /* postprocess_glyphs */ - HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT, + HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS_NO_SHORT_CIRCUIT, nullptr, /* decompose */ nullptr, /* compose */ - nullptr, /* setup_masks */ - nullptr, /* disable_otl */ + setup_masks_myanmar, + HB_TAG_NONE, /* gpos_tag */ nullptr, /* reorder_marks */ - HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE, - true, /* fallback_position */ + HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_EARLY, + false, /* fallback_position */ }; -const hb_ot_complex_shaper_t _hb_ot_complex_shaper_myanmar = + +/* Ugly Zawgyi encoding. + * Disable all auto processing. + * https://github.com/harfbuzz/harfbuzz/issues/1162 */ +const hb_ot_complex_shaper_t _hb_ot_complex_shaper_myanmar_zawgyi = { - collect_features_myanmar, - override_features_myanmar, + nullptr, /* collect_features */ + nullptr, /* override_features */ nullptr, /* data_create */ nullptr, /* data_destroy */ nullptr, /* preprocess_text */ nullptr, /* postprocess_glyphs */ - HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS_NO_SHORT_CIRCUIT, + HB_OT_SHAPE_NORMALIZATION_MODE_NONE, nullptr, /* decompose */ nullptr, /* compose */ - setup_masks_myanmar, - nullptr, /* disable_otl */ + nullptr, /* setup_masks */ + HB_TAG_NONE, /* gpos_tag */ nullptr, /* reorder_marks */ - HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_EARLY, + HB_OT_SHAPE_ZERO_WIDTH_MARKS_NONE, false, /* fallback_position */ }; + + +#endif |