Henri Verbeet : usp10: Avoid special handling if the substitution count is 0 in GSUB_apply_ChainContextSubst ().
Module: wine Branch: master Commit: 9694aeb06d9417089c10b8b09ddffd0ba47eff02 URL: http://source.winehq.org/git/wine.git/?a=commit;h=9694aeb06d9417089c10b8b09d... Author: Henri Verbeet <hverbeet(a)codeweavers.com> Date: Thu Apr 6 12:03:45 2017 +0200 usp10: Avoid special handling if the substitution count is 0 in GSUB_apply_ChainContextSubst(). Signed-off-by: Henri Verbeet <hverbeet(a)codeweavers.com> Signed-off-by: Aric Stewart <aric(a)codeweavers.com> Signed-off-by: Alexandre Julliard <julliard(a)winehq.org> --- dlls/usp10/opentype.c | 62 +++++++++++++++++++++------------------------------ 1 file changed, 26 insertions(+), 36 deletions(-) diff --git a/dlls/usp10/opentype.c b/dlls/usp10/opentype.c index 81a5180..a3346ef 100644 --- a/dlls/usp10/opentype.c +++ b/dlls/usp10/opentype.c @@ -1237,7 +1237,6 @@ static INT GSUB_apply_ChainContextSubst(const OT_LookupList* lookup, const OT_Lo } else if (GET_BE_WORD(ccsf1->SubstFormat) == 2) { - int newIndex = glyph_index; WORD offset, count; const void *backtrack_class_table; const void *input_class_table; @@ -1281,12 +1280,13 @@ static INT GSUB_apply_ChainContextSubst(const OT_LookupList* lookup, const OT_Lo for (i = 0; i < count; i++) { - WORD backtrack_count, input_count, lookahead_count; + WORD backtrack_count, input_count, lookahead_count, substitute_count; int k; const GSUB_ChainSubClassRule_1 *backtrack; const GSUB_ChainSubClassRule_2 *input; const GSUB_ChainSubClassRule_3 *lookahead; const GSUB_ChainSubClassRule_4 *substitute; + int new_index = GSUB_E_NOGLYPH; offset = GET_BE_WORD(csc->ChainSubClassRule[i]); backtrack = (const GSUB_ChainSubClassRule_1 *)((BYTE *)csc + offset); @@ -1343,35 +1343,30 @@ static INT GSUB_apply_ChainContextSubst(const OT_LookupList* lookup, const OT_Lo continue; TRACE("Matched LookAhead\n"); - if (GET_BE_WORD(substitute->SubstCount)) + substitute_count = GET_BE_WORD(substitute->SubstCount); + for (k = 0; k < substitute_count; ++k) { - for (k = 0; k < GET_BE_WORD(substitute->SubstCount); ++k) - { - int lookupIndex = GET_BE_WORD(substitute->SubstLookupRecord[k].LookupListIndex); - int SequenceIndex = GET_BE_WORD(substitute->SubstLookupRecord[k].SequenceIndex) * write_dir; - - TRACE("SUBST: %i -> %i %i\n",k, SequenceIndex, lookupIndex); - newIndex = GSUB_apply_lookup(lookup, lookupIndex, glyphs, glyph_index + SequenceIndex, write_dir, glyph_count); - if (newIndex == GSUB_E_NOGLYPH) - { - ERR("Chain failed to generate a glyph\n"); - continue; - } - } - return newIndex; + WORD lookup_index = GET_BE_WORD(substitute->SubstLookupRecord[k].LookupListIndex); + WORD sequence_index = GET_BE_WORD(substitute->SubstLookupRecord[k].SequenceIndex) * write_dir; + + TRACE("SUBST: %u -> %u %u.\n", k, sequence_index, lookup_index); + new_index = GSUB_apply_lookup(lookup, lookup_index, glyphs, + glyph_index + sequence_index, write_dir, glyph_count); + if (new_index == GSUB_E_NOGLYPH) + ERR("Chain failed to generate a glyph.\n"); } - else return GSUB_E_NOGLYPH; + return new_index; } } else if (GET_BE_WORD(ccsf1->SubstFormat) == 3) { - WORD backtrack_count, input_count, lookahead_count; + WORD backtrack_count, input_count, lookahead_count, substitution_count; int k; const GSUB_ChainContextSubstFormat3_1 *backtrack; const GSUB_ChainContextSubstFormat3_2 *input; const GSUB_ChainContextSubstFormat3_3 *lookahead; const GSUB_ChainContextSubstFormat3_4 *substitute; - int newIndex = glyph_index; + int new_index = GSUB_E_NOGLYPH; TRACE(" subtype 3 (Coverage-based Chaining Context Glyph Substitution)\n"); @@ -1428,24 +1423,19 @@ static INT GSUB_apply_ChainContextSubst(const OT_LookupList* lookup, const OT_Lo continue; TRACE("Matched LookAhead\n"); - if (GET_BE_WORD(substitute->SubstCount)) + substitution_count = GET_BE_WORD(substitute->SubstCount); + for (k = 0; k < substitution_count; ++k) { - for (k = 0; k < GET_BE_WORD(substitute->SubstCount); ++k) - { - int lookupIndex = GET_BE_WORD(substitute->SubstLookupRecord[k].LookupListIndex); - int SequenceIndex = GET_BE_WORD(substitute->SubstLookupRecord[k].SequenceIndex) * write_dir; - - TRACE("SUBST: %i -> %i %i\n",k, SequenceIndex, lookupIndex); - newIndex = GSUB_apply_lookup(lookup, lookupIndex, glyphs, glyph_index + SequenceIndex, write_dir, glyph_count); - if (newIndex == GSUB_E_NOGLYPH) - { - ERR("Chain failed to generate a glyph\n"); - continue; - } - } - return newIndex; + WORD lookup_index = GET_BE_WORD(substitute->SubstLookupRecord[k].LookupListIndex); + WORD sequence_index = GET_BE_WORD(substitute->SubstLookupRecord[k].SequenceIndex) * write_dir; + + TRACE("SUBST: %u -> %u %u.\n", k, sequence_index, lookup_index); + new_index = GSUB_apply_lookup(lookup, lookup_index, glyphs, + glyph_index + sequence_index, write_dir, glyph_count); + if (new_index == GSUB_E_NOGLYPH) + ERR("Chain failed to generate a glyph.\n"); } - else return GSUB_E_NOGLYPH; + return new_index; } } return GSUB_E_NOGLYPH;
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Alexandre Julliard