| /* |
| * Copyright © 2010,2012 Google, Inc. |
| * |
| * This is part of HarfBuzz, a text shaping library. |
| * |
| * Permission is hereby granted, without written agreement and without |
| * license or royalty fees, to use, copy, modify, and distribute this |
| * software and its documentation for any purpose, provided that the |
| * above copyright notice and the following two paragraphs appear in |
| * all copies of this software. |
| * |
| * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
| * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
| * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
| * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
| * DAMAGE. |
| * |
| * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
| * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
| * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
| * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
| * |
| * Google Author(s): Behdad Esfahbod |
| */ |
| |
| #include "hb.hh" |
| |
| #ifndef HB_NO_OT_SHAPE |
| |
| #include "hb-ot-shape-complex.hh" |
| |
| |
| static bool |
| compose_hebrew (const hb_ot_shape_normalize_context_t *c, |
| hb_codepoint_t a, |
| hb_codepoint_t b, |
| hb_codepoint_t *ab) |
| { |
| /* Hebrew presentation-form shaping. |
| * https://bugzilla.mozilla.org/show_bug.cgi?id=728866 |
| * Hebrew presentation forms with dagesh, for characters U+05D0..05EA; |
| * Note that some letters do not have a dagesh presForm encoded. |
| */ |
| static const hb_codepoint_t sDageshForms[0x05EAu - 0x05D0u + 1] = { |
| 0xFB30u, /* ALEF */ |
| 0xFB31u, /* BET */ |
| 0xFB32u, /* GIMEL */ |
| 0xFB33u, /* DALET */ |
| 0xFB34u, /* HE */ |
| 0xFB35u, /* VAV */ |
| 0xFB36u, /* ZAYIN */ |
| 0x0000u, /* HET */ |
| 0xFB38u, /* TET */ |
| 0xFB39u, /* YOD */ |
| 0xFB3Au, /* FINAL KAF */ |
| 0xFB3Bu, /* KAF */ |
| 0xFB3Cu, /* LAMED */ |
| 0x0000u, /* FINAL MEM */ |
| 0xFB3Eu, /* MEM */ |
| 0x0000u, /* FINAL NUN */ |
| 0xFB40u, /* NUN */ |
| 0xFB41u, /* SAMEKH */ |
| 0x0000u, /* AYIN */ |
| 0xFB43u, /* FINAL PE */ |
| 0xFB44u, /* PE */ |
| 0x0000u, /* FINAL TSADI */ |
| 0xFB46u, /* TSADI */ |
| 0xFB47u, /* QOF */ |
| 0xFB48u, /* RESH */ |
| 0xFB49u, /* SHIN */ |
| 0xFB4Au /* TAV */ |
| }; |
| |
| bool found = (bool) c->unicode->compose (a, b, ab); |
| |
| #ifdef HB_NO_OT_SHAPE_COMPLEX_HEBREW_FALLBACK |
| return found; |
| #endif |
| |
| if (!found && !c->plan->has_gpos_mark) |
| { |
| /* Special-case Hebrew presentation forms that are excluded from |
| * standard normalization, but wanted for old fonts. */ |
| switch (b) { |
| case 0x05B4u: /* HIRIQ */ |
| if (a == 0x05D9u) { /* YOD */ |
| *ab = 0xFB1Du; |
| found = true; |
| } |
| break; |
| case 0x05B7u: /* patah */ |
| if (a == 0x05F2u) { /* YIDDISH YOD YOD */ |
| *ab = 0xFB1Fu; |
| found = true; |
| } else if (a == 0x05D0u) { /* ALEF */ |
| *ab = 0xFB2Eu; |
| found = true; |
| } |
| break; |
| case 0x05B8u: /* QAMATS */ |
| if (a == 0x05D0u) { /* ALEF */ |
| *ab = 0xFB2Fu; |
| found = true; |
| } |
| break; |
| case 0x05B9u: /* HOLAM */ |
| if (a == 0x05D5u) { /* VAV */ |
| *ab = 0xFB4Bu; |
| found = true; |
| } |
| break; |
| case 0x05BCu: /* DAGESH */ |
| if (a >= 0x05D0u && a <= 0x05EAu) { |
| *ab = sDageshForms[a - 0x05D0u]; |
| found = (*ab != 0); |
| } else if (a == 0xFB2Au) { /* SHIN WITH SHIN DOT */ |
| *ab = 0xFB2Cu; |
| found = true; |
| } else if (a == 0xFB2Bu) { /* SHIN WITH SIN DOT */ |
| *ab = 0xFB2Du; |
| found = true; |
| } |
| break; |
| case 0x05BFu: /* RAFE */ |
| switch (a) { |
| case 0x05D1u: /* BET */ |
| *ab = 0xFB4Cu; |
| found = true; |
| break; |
| case 0x05DBu: /* KAF */ |
| *ab = 0xFB4Du; |
| found = true; |
| break; |
| case 0x05E4u: /* PE */ |
| *ab = 0xFB4Eu; |
| found = true; |
| break; |
| } |
| break; |
| case 0x05C1u: /* SHIN DOT */ |
| if (a == 0x05E9u) { /* SHIN */ |
| *ab = 0xFB2Au; |
| found = true; |
| } else if (a == 0xFB49u) { /* SHIN WITH DAGESH */ |
| *ab = 0xFB2Cu; |
| found = true; |
| } |
| break; |
| case 0x05C2u: /* SIN DOT */ |
| if (a == 0x05E9u) { /* SHIN */ |
| *ab = 0xFB2Bu; |
| found = true; |
| } else if (a == 0xFB49u) { /* SHIN WITH DAGESH */ |
| *ab = 0xFB2Du; |
| found = true; |
| } |
| break; |
| } |
| } |
| |
| return found; |
| } |
| |
| |
| const hb_ot_complex_shaper_t _hb_ot_complex_shaper_hebrew = |
| { |
| nullptr, /* collect_features */ |
| nullptr, /* override_features */ |
| nullptr, /* data_create */ |
| nullptr, /* data_destroy */ |
| nullptr, /* preprocess_text */ |
| nullptr, /* postprocess_glyphs */ |
| HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT, |
| nullptr, /* decompose */ |
| compose_hebrew, |
| nullptr, /* setup_masks */ |
| HB_TAG ('h','e','b','r'), /* gpos_tag. https://github.com/harfbuzz/harfbuzz/issues/347#issuecomment-267838368 */ |
| nullptr, /* reorder_marks */ |
| HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE, |
| true, /* fallback_position */ |
| }; |
| |
| |
| #endif |