/* otfdrive.c -- OpenType font driver.
-Copyright (C) 2003
- by AIST (National Institute of Advanced Industrial Science and Technology)
- Registration Number H15PRO???
+Copyright (C) 2003, 2004
+ National Institute of Advanced Industrial Science and Technology (AIST)
+ Registration Number H15PRO167
-This file is part of the OTF library.
+This file is part of libotf.
-The OTF library is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public License as
-published by the Free Software Foundation; either version 2, or (at
-your option) any later version.
+Libotf is free software; you can redistribute it and/or modify it
+under the terms of the GNU Lesser General Public License as published
+by the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
-The OTF library is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-General Public License for more details.
+Libotf is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+License for more details.
-You should have received a copy of the GNU General Public License
-along with the OTF library; see the file COPYING. If not, write to
-the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+You should have received a copy of the GNU Lesser General Public
+License along with this library, in a file named COPYING; if not,
+write to the Free Software Foundation, Inc., 59 Temple Place, Suite
+330, Boston, MA 02111-1307, USA. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <config.h>
#include "otf.h"
#include "otferror.h"
+/* Return nonzero if OTF_Glyph *G should be ignored according to
+ LookupFlag FLAG. */
+#define IGNORED_GLYPH(g, flag) \
+ ((g)->glyph_id == 0 \
+ || ((flag) & (1 << (g)->GlyphClass)) \
+ || (((flag) & OTF_MarkAttachmentType) \
+ && (g)->GlyphClass == OTF_GlyphClassMark \
+ && ((flag) >> 8) != (g)->MarkAttachClass))
+
#define GSTRING_DELETE(gstring, from, len) \
do { \
memmove (gstring->glyphs + from, gstring->glyphs + from + len, \
char *errfmt = "GSTRING%s"; \
\
gstring->size = gstring->used + len; \
- gstring->glyphs = (OTF_Glyph *) realloc (gstring->glyphs, \
- gstring->size); \
+ gstring->glyphs \
+ = (OTF_Glyph *) realloc (gstring->glyphs, \
+ sizeof (OTF_Glyph) * gstring->size); \
if (! gstring->glyphs) \
OTF_ERROR (OTF_ERROR_MEMORY, ""); \
} \
static int
-gstring_subst (OTF_GlyphString *gstring, int from, int to,
+gstring_subst (OTF *otf, OTF_GlyphString *gstring, int from, int to, int flag,
OTF_GlyphID *ids, int num)
{
int errret = -1;
int len = to - from;
int i;
+ int from_idx = gstring->glyphs[from].f.index.from;
+ int to_idx = gstring->glyphs[to - 1].f.index.to;
+ int non_ignored_idx;
+
+ for (i = non_ignored_idx = to - 1; i >= from; i--)
+ {
+ OTF_Glyph *g = gstring->glyphs + i;
+ if (IGNORED_GLYPH (g, flag))
+ {
+ OTF_Glyph temp = *g;
+
+ memmove (g, g + 1, sizeof (OTF_Glyph) * (non_ignored_idx - i));
+ temp.f.index.from = from_idx;
+ temp.f.index.to = to_idx;
+ gstring->glyphs[non_ignored_idx--] = temp;
+ len--;
+ }
+ }
if (len < num)
GSTRING_INSERT (gstring, from, (num - len));
else if (len > num)
GSTRING_DELETE (gstring, from, (len - num));
for (i = 0; i < num; i++)
- gstring->glyphs[from + i].glyph_id = ids[i];
+ {
+ gstring->glyphs[from + i].c = otf->cmap->decode_table[ids[i]];
+ gstring->glyphs[from + i].glyph_id = ids[i];
+ gstring->glyphs[from + i].f.index.from = from_idx;
+ gstring->glyphs[from + i].f.index.to = to_idx;
+ }
return 0;
}
OTF_Tag script_tag = OTF_tag (script);
OTF_Tag langsys_tag = OTF_tag (language);
int i, j;
+ OTF_Tag dflt_tag = OTF_tag ("DFLT");
+ OTF_Script *dflt = NULL;
for (i = 0; i < script_list->ScriptCount; i++)
- if (script_list->Script[i].ScriptTag == script_tag)
- {
- OTF_Script *script = script_list->Script + i;
-
- if (! langsys_tag)
- return &script->DefaultLangSys;
- for (j = 0; j < script->LangSysCount; j++)
- if (script->LangSysRecord[j].LangSysTag == langsys_tag)
- return script->LangSys + j;
- return &script->DefaultLangSys;
- }
+ {
+ OTF_Script *script = script_list->Script + i;
+
+ if (script_list->Script[i].ScriptTag == dflt_tag)
+ dflt = script;
+ if (script_list->Script[i].ScriptTag == script_tag)
+ {
+ if (! langsys_tag)
+ return &script->DefaultLangSys;
+ for (j = 0; j < script->LangSysCount; j++)
+ if (script->LangSysRecord[j].LangSysTag == langsys_tag)
+ return script->LangSys + j;
+ return &script->DefaultLangSys;
+ }
+ }
- return NULL;
+ if (! dflt)
+ dflt = script_list->Script;
+ if (! langsys_tag)
+ return &dflt->DefaultLangSys;
+ for (j = 0; j < dflt->LangSysCount; j++)
+ if (dflt->LangSysRecord[j].LangSysTag == langsys_tag)
+ return dflt->LangSys + j;
+ return &dflt->DefaultLangSys;
}
static int
-setup_lookup_indices (OTF_LangSys *LangSys, OTF_FeatureList *FeatureList,
+setup_lookup_indices (OTF_LookupList *LookupList, OTF_FeatureList *FeatureList,
char *features, int *lookup_indices)
{
int i, j, n = 0;
{
char tagname[4];
OTF_Tag tag;
- int negate = 0;
+ int use_it = 1;
if (*features == '*')
{
}
if (*features == '~')
- negate = 1, features++;
+ use_it = -1, features++;
for (i = 0; *features && *features != ','; i++, features++)
tagname[i] = *features;
if (*features)
feature = FeatureList->Feature + i;
if (tag == feature->FeatureTag)
{
- if (! negate)
+ if (feature_table[i])
+ break;
+ if (use_it > 0)
for (j = 0; j < feature->LookupCount; j++)
lookup_indices[n++] = feature->LookupListIndex[j];
- feature_table[i] = 1;
+ feature_table[i] = use_it;
break;
}
}
}
static int
-match_ids (OTF_GlyphString *gstring, int gidx, int count, OTF_GlyphID *ids)
+match_ids (OTF_GlyphString *gstring, int gidx, int flag,
+ int count, OTF_GlyphID *ids)
{
OTF_Glyph *gbeg = gstring->glyphs + gidx;
OTF_Glyph *gend = gstring->glyphs + gstring->used;
int i;
for (g = gbeg, i = 0; g < gend && i < count; g++)
- if (g->glyph_id && g->glyph_id != ids[i++])
+ if (! IGNORED_GLYPH (g, flag) && g->glyph_id != ids[i++])
return -1;
return (i < count ? -1 : g - gbeg);
}
static int
-match_chain_ids (OTF_GlyphString *gstring, int gidx, OTF_ChainRule *rule)
+match_chain_ids (OTF_GlyphString *gstring, int gidx, int flag,
+ OTF_ChainRule *rule)
{
- int i, j;
+ int i = rule->BacktrackGlyphCount;
- for (i = rule->BacktrackGlyphCount, j = gidx - 1; j >= 0 && i > 0; j--)
- if (gstring->glyphs[j].glyph_id)
- i--;
if (i > 0)
- return -1;
+ {
+ int j;
+ OTF_Glyph *g;
- i = match_ids (gstring, j, rule->BacktrackGlyphCount, rule->Backtrack);
- if (i < 0)
- return -1;
+ for (j = gidx - 1, g = gstring->glyphs + j; j >= 0; j--, g--)
+ if (! IGNORED_GLYPH (g, flag) && --i == 0)
+ break;
+ if (i > 0)
+ return -1;
+ if (match_ids (gstring, j, flag,
+ rule->BacktrackGlyphCount, rule->Backtrack)
+ < 0)
+ return -1;
+ }
gidx++;
- i = match_ids (gstring, gidx, rule->InputGlyphCount - 1, rule->Input);
+ i = match_ids (gstring, gidx, flag,
+ rule->InputGlyphCount - 1, rule->Input);
if (i < 0)
return -1;
gidx += i;
- i = match_ids (gstring, gidx, rule->LookaheadGlyphCount, rule->LookAhead);
+ i = match_ids (gstring, gidx, flag,
+ rule->LookaheadGlyphCount, rule->LookAhead);
if (i < 0)
return -1;
return 0;
static int
match_classes (OTF_ClassDef *class_def, OTF_GlyphString *gstring, int gidx,
- int count, unsigned *classes)
+ int flag, int count, unsigned *classes)
{
OTF_Glyph *gbeg = gstring->glyphs + gidx;
OTF_Glyph *gend = gstring->glyphs + gstring->used;
int i;
for (g = gbeg, i = 0; g < gend && i < count; g++)
- if (g->glyph_id
+ if (! IGNORED_GLYPH (g, flag)
&& get_class_def (class_def, g->glyph_id) != classes[i++])
return -1;
return (i < count ? -1 : g - gbeg);
}
static int
-match_chain_classes (OTF_GlyphString *gstring, int gidx,
+match_chain_classes (OTF_GlyphString *gstring, int gidx, int flag,
OTF_ClassDef *BacktrackClassDef,
OTF_ClassDef *InputClassDef,
OTF_ClassDef *LookaheadClassDef,
OTF_ChainClassRule *rule)
{
- int i, j;
+ int i = rule->BacktrackGlyphCount;
- for (i = rule->BacktrackGlyphCount, j = gidx - 1; j >= 0 && i > 0; j--)
- if (gstring->glyphs[j].glyph_id)
- i--;
if (i > 0)
- return -1;
+ {
+ int j;
+ OTF_Glyph *g;
- i = match_classes (BacktrackClassDef, gstring, j,
- rule->BacktrackGlyphCount, rule->Backtrack);
- if (i < 0)
- return -1;
+ for (j = gidx - 1, g = gstring->glyphs + j; j >= 0; j--, g--)
+ if (! IGNORED_GLYPH (g, flag) && i-- == 0)
+ break;
+ if (i > 0)
+ return -1;
+ if (match_classes (BacktrackClassDef, gstring, j, flag,
+ rule->BacktrackGlyphCount, rule->Backtrack) < 0);
+ return -1;
+ }
gidx++;
- i = match_classes (InputClassDef, gstring, gidx,
+ i = match_classes (InputClassDef, gstring, gidx, flag,
rule->InputGlyphCount - 1, rule->Input);
if (i < 0)
return -1;
gidx += i;
- i = match_classes (LookaheadClassDef, gstring, gidx,
+ i = match_classes (LookaheadClassDef, gstring, gidx, flag,
rule->LookaheadGlyphCount, rule->LookAhead);
if (i < 0)
return -1;
static int
-match_coverages (OTF_GlyphString *gstring, int gidx, int count,
+match_coverages (OTF_GlyphString *gstring, int gidx, int flag, int count,
OTF_Coverage *coverages)
{
OTF_Glyph *gbeg = gstring->glyphs + gidx;
int i;
for (g = gbeg, i = 0; g < gend && i < count; g++)
- if (g->glyph_id
- && get_coverage_index (coverages + i, g->glyph_id) < 0)
+ if (! IGNORED_GLYPH (g, flag)
+ && get_coverage_index (coverages + i++, g->glyph_id) < 0)
return -1;
return (i < count ? -1 : g - gbeg);
}
static int
-match_chain_coverages (OTF_GlyphString *gstring, int gidx,
+match_chain_coverages (OTF_GlyphString *gstring, int gidx, int flag,
OTF_GSUB_ChainContext3 *context3)
{
- int i, j;
-
- if (gidx < context3->BacktrackGlyphCount
- || (gidx + context3->InputGlyphCount
- + context3->LookaheadGlyphCount) >= gstring->used)
- return -1;
+ int i = context3->BacktrackGlyphCount;
- for (i = context3->BacktrackGlyphCount, j = gidx - 1; j >= 0 && i > 0; j--)
- if (gstring->glyphs[j].glyph_id)
- i--;
if (i > 0)
- return -1;
+ {
+ int j;
+ OTF_Glyph *g;
- i = match_coverages (gstring, j, context3->BacktrackGlyphCount,
- context3->Backtrack);
- if (i < 0)
- return -1;
+ for (j = gidx - 1, g= gstring->glyphs +j; j >= 0; j--, g--)
+ if (! IGNORED_GLYPH (g, flag) && --i == 0)
+ break;
+ if (i > 0)
+ return -1;
+ if (match_coverages (gstring, j, flag, context3->BacktrackGlyphCount,
+ context3->Backtrack) < 0)
+ return -1;
+ }
gidx++;
- i = match_coverages (gstring, gidx, context3->InputGlyphCount - 1,
- context3->Input + 1);
- if (i < 0)
- return -1;
- gidx += i;
- i = match_coverages (gstring, gidx, context3->LookaheadGlyphCount,
- context3->LookAhead);
- if (i < 0)
+ if (context3->InputGlyphCount > 1)
+ {
+ i = match_coverages (gstring, gidx, flag, context3->InputGlyphCount - 1,
+ context3->Input + 1);
+ if (i < 0)
+ return -1;
+ gidx += i;
+ }
+ if (match_coverages (gstring, gidx, flag, context3->LookaheadGlyphCount,
+ context3->LookAhead) < 0)
return -1;
return 0;
}
static int
-lookup_gsub (OTF_LookupList *lookup_list, unsigned lookup_list_index,
- OTF_GlyphString *gstring, int gidx)
+lookup_gsub (OTF *otf, OTF_LookupList *lookup_list, unsigned lookup_list_index,
+ OTF_GlyphString *gstring, int gidx, int alternate_subst)
{
char *errfmt = "GSUB Looking up%s";
int errret = -1;
OTF_Lookup *lookup = lookup_list->Lookup + lookup_list_index;
- unsigned int flag = lookup->LookupFlag;
+ unsigned int flag = (lookup->LookupFlag
+ & (OTF_LookupFlagIgnoreMask | OTF_MarkAttachmentType));
int orig_gidx = gidx;
OTF_Glyph *g = gstring->glyphs + gidx;
int i;
- if (! g->glyph_id
- || (g->GlyphClass
- && (flag & (1 << g->GlyphClass))))
+ if (IGNORED_GLYPH (g, flag))
return (gidx + 1);
/* Try all subtables until one of them handles the current glyph. */
subtable = extension1->ExtensionSubtable;
}
+ if (alternate_subst
+ ? (lookup_type != 3 && lookup_type != 5 && lookup_type != 6)
+ : (lookup_type == 3))
+ continue;
+
if (subtable->Coverage.offset)
{
coverage_idx = get_coverage_index (&subtable->Coverage,
continue;
}
- switch (lookup->LookupType)
+ switch (lookup_type)
{
case 1:
if (subtable->Format == 1)
break;
case 2:
- {
- OTF_GSUB_Multiple1 *multiple1 = &subtable->u.multiple1;
- OTF_Sequence *seq = multiple1->Sequence + coverage_idx;
+ if (subtable->Format == 1)
+ {
+ OTF_GSUB_Multiple1 *multiple1 = &subtable->u.multiple1;
+ OTF_Sequence *seq = multiple1->Sequence + coverage_idx;
- gstring_subst (gstring, gidx, gidx + 1,
- seq->Substitute, seq->GlyphCount);
- gidx += seq->GlyphCount;
- }
+ gstring_subst (otf, gstring, gidx, gidx + 1, flag,
+ seq->Substitute, seq->GlyphCount);
+ gidx += seq->GlyphCount;
+ }
+ else
+ OTF_ERROR (OTF_ERROR_GSUB_DRIVE, " (invalid SubFormat)");
break;
case 3:
OTF_GSUB_Alternate1 *alt1 = &subtable->u.alternate1;
OTF_AlternateSet *altset = alt1->AlternateSet + coverage_idx;
- g->glyph_id = altset->Alternate[0];
- gidx++;
+ gstring_subst (otf, gstring, gidx + 1, gidx + 1, flag,
+ altset->Alternate, altset->GlyphCount);
+ gidx += altset->GlyphCount;;
}
else
OTF_ERROR (OTF_ERROR_GSUB_DRIVE, " (invalid SubFormat)");
int n;
lig = ligset->Ligature + j;
- n = match_ids (gstring, gidx + 1,
+ n = match_ids (gstring, gidx + 1, flag,
lig->CompCount - 1, lig->Component);
if (n < 0)
continue;
- gstring_subst (gstring, gidx, gidx + 1 + n,
+ gstring_subst (otf, gstring, gidx, gidx + 1 + n, flag,
&lig->LigGlyph, 1);
gidx++;
break;
for (j = 0; j < set->RuleCount; j++)
{
rule = set->Rule + j;
- if (match_ids (gstring, gidx + 1,
+ if (match_ids (gstring, gidx + 1, flag,
rule->GlyphCount - 1, rule->Input) < 0)
continue;
orig_used = gstring->used;
for (k = 0; k < rule->LookupCount; k++)
- lookup_gsub (lookup_list,
+ lookup_gsub (otf, lookup_list,
rule->LookupRecord[k].LookupListIndex,
gstring,
- gidx + rule->LookupRecord[k].SequenceIndex);
+ gidx + rule->LookupRecord[k].SequenceIndex,
+ alternate_subst);
gidx += rule->GlyphCount + (gstring->used - orig_used);
break;
}
class = get_class_def (&context2->ClassDef, g->glyph_id);
set = context2->ClassSet + class;
- for (j = 0; j < set->ClassRuleCnt; j++)
- {
- rule = set->ClassRule + j;
- if (match_classes (&context2->ClassDef,
- gstring, gidx + 1,
- rule->GlyphCount - 1, rule->Class)
- < 0)
- continue;
- orig_used = gstring->used;
- for (k = 0; k < rule->LookupCount; k++)
- lookup_gsub (lookup_list,
- rule->LookupRecord[k].LookupListIndex,
- gstring,
- gidx + rule->LookupRecord[k].SequenceIndex);
- gidx += rule->GlyphCount + (gstring->used - orig_used);
- break;
- }
+ if (set)
+ for (j = 0; j < set->ClassRuleCnt; j++)
+ {
+ rule = set->ClassRule + j;
+ if (match_classes (&context2->ClassDef,
+ gstring, gidx + 1, flag,
+ rule->GlyphCount - 1, rule->Class)
+ < 0)
+ continue;
+ orig_used = gstring->used;
+ for (k = 0; k < rule->LookupCount; k++)
+ lookup_gsub (otf, lookup_list,
+ rule->LookupRecord[k].LookupListIndex,
+ gstring,
+ gidx + rule->LookupRecord[k].SequenceIndex,
+ alternate_subst);
+ gidx += rule->GlyphCount + (gstring->used - orig_used);
+ break;
+ }
}
else /* subtable->Format == 3 */
{
int orig_used;
int j;
- if (match_coverages (gstring, gidx + 1, context3->GlyphCount - 1,
+ if (match_coverages (gstring, gidx + 1, flag,
+ context3->GlyphCount - 1,
context3->Coverage + 1) < 0)
continue;
orig_used = gstring->used;
for (j = 0; j < context3->LookupCount; j++)
- lookup_gsub (lookup_list,
+ lookup_gsub (otf, lookup_list,
context3->LookupRecord[j].LookupListIndex,
gstring,
- gidx + context3->LookupRecord[j].SequenceIndex);
+ gidx + context3->LookupRecord[j].SequenceIndex,
+ alternate_subst);
gidx += context3->GlyphCount + (gstring->used - orig_used);
}
break;
if (gidx < rule->BacktrackGlyphCount
|| (gidx + rule->InputGlyphCount
- + rule->LookaheadGlyphCount) >= gstring->used)
+ + rule->LookaheadGlyphCount) > gstring->used)
continue;
- if (match_chain_ids (gstring, gidx, rule) < 0)
+ if (match_chain_ids (gstring, gidx, flag, rule) < 0)
continue;
orig_used = gstring->used;
for (k = 0; k < rule->LookupCount; k++)
- lookup_gsub (lookup_list,
+ lookup_gsub (otf, lookup_list,
rule->LookupRecord[k].LookupListIndex,
gstring,
- gidx + rule->LookupRecord[k].SequenceIndex);
+ gidx + rule->LookupRecord[k].SequenceIndex,
+ alternate_subst);
gidx += rule->InputGlyphCount + (gstring->used - orig_used);
break;
}
int j;
int orig_used;
- // printf ("GSUB 6-2: c:0x%x g:0x%x\n", g->c, g->glyph_id);
class = get_class_def (&context2->InputClassDef, g->glyph_id);
set = context2->ChainClassSet + class;
for (j = 0; j < set->ChainClassRuleCnt; j++)
if (gidx < rule->BacktrackGlyphCount
|| (gidx + rule->InputGlyphCount
- + rule->LookaheadGlyphCount) >= gstring->used)
+ + rule->LookaheadGlyphCount) > gstring->used)
continue;
- if (match_chain_classes (gstring, gidx,
+ if (match_chain_classes (gstring, gidx, flag,
&context2->BacktrackClassDef,
&context2->InputClassDef,
&context2->LookaheadClassDef,
continue;
orig_used = gstring->used;
for (k = 0; k < rule->LookupCount; k++)
- lookup_gsub (lookup_list,
+ lookup_gsub (otf, lookup_list,
rule->LookupRecord[k].LookupListIndex,
gstring,
- gidx + rule->LookupRecord[k].SequenceIndex);
+ gidx + rule->LookupRecord[k].SequenceIndex,
+ alternate_subst);
gidx += rule->InputGlyphCount + (gstring->used - orig_used);
break;
}
int orig_used;
int j;
- if (match_chain_coverages (gstring, gidx, context3) < 0)
+ if (gidx < context3->BacktrackGlyphCount
+ || (gidx + context3->InputGlyphCount
+ + context3->LookaheadGlyphCount) > gstring->used)
+ continue;
+ if (match_chain_coverages (gstring, gidx, flag, context3) < 0)
continue;
orig_used = gstring->used;
for (j = 0; j < context3->LookupCount; j++)
- lookup_gsub (lookup_list,
+ lookup_gsub (otf, lookup_list,
context3->LookupRecord[j].LookupListIndex,
gstring,
- gidx + context3->LookupRecord[j].SequenceIndex);
+ gidx + context3->LookupRecord[j].SequenceIndex,
+ alternate_subst);
gidx += context3->InputGlyphCount + (gstring->used - orig_used);
}
break;
}
}
if (gidx == orig_gidx)
- {
- //printf ("not applied\n");
- gidx++;
- }
- else
- {
- // printf ("done\n");
- }
+ gidx++;
return gidx;
}
char *errfmt = "GPOS Looking up%s";
int errret = -1;
OTF_Lookup *lookup = lookup_list->Lookup + lookup_list_index;
- unsigned int flag = lookup->LookupFlag;
+ unsigned int flag = (lookup->LookupFlag
+ & (OTF_LookupFlagIgnoreMask | OTF_MarkAttachmentType));
int orig_gidx = gidx;
OTF_Glyph *g = gstring->glyphs + gidx;
int i;
- if (! g->glyph_id
- || (g->GlyphClass
- && (flag & (1 << g->GlyphClass))))
+ if (IGNORED_GLYPH (g, flag)
+ || g->positioning_type)
return (gidx + 1);
/* Try all subtables until one of them handles the current glyph. */
for (i = 0; i < lookup->SubTableCount && gidx == orig_gidx; i++)
{
+ unsigned lookup_type = lookup->LookupType;
OTF_LookupSubTableGPOS *subtable = lookup->SubTable.gpos + i;
int coverage_idx;
- // printf ("subtype:%d ", subtable->Format);
+ if (lookup_type == 9)
+ {
+ OTF_GPOS_Extension1 *extension1 = &subtable->u.extension1;
+
+ lookup_type = extension1->ExtensionLookupType;
+ subtable = extension1->ExtensionSubtable;
+ }
+
if (subtable->Coverage.offset)
{
coverage_idx = get_coverage_index (&subtable->Coverage,
g->glyph_id);
if (coverage_idx < 0)
- {
- // printf ("not covererd ");
- continue;
- }
+ continue;
}
- switch (lookup->LookupType)
+ switch (lookup_type)
{
case 1:
- g->positioning_type = lookup->LookupType;
+ g->positioning_type = lookup_type;
if (subtable->Format == 1)
{
OTF_GPOS_Single1 *single1 = &subtable->u.single1;
break;
case 2:
- if (gidx + 1 >= gstring->used)
- continue;
- if (subtable->Format == 1)
- {
- OTF_GPOS_Pair1 *pair1 = &subtable->u.pair1;
- OTF_PairSet *set = pair1->PairSet + coverage_idx;
- int j;
+ {
+ int next_gidx;
+ OTF_Glyph *nextg;
- for (j = 0; j < set->PairValueCount; j++)
- {
- if (set->PairValueRecord[j].SecondGlyph != g[1].glyph_id)
- continue;
- gidx++;
- g->positioning_type = lookup->LookupType;
- g->f.f2.format = pair1->ValueFormat1;
- g->f.f2.value = &set->PairValueRecord[j].Value1;
- if (pair1->ValueFormat2)
+ for (next_gidx = gidx + 1, nextg = gstring->glyphs + next_gidx;
+ next_gidx < gstring->used && ! IGNORED_GLYPH (nextg, flag);
+ next_gidx++, nextg++);
+
+ if (next_gidx >= gstring->used
+ || nextg->positioning_type)
+ continue;
+ if (subtable->Format == 1)
+ {
+ OTF_GPOS_Pair1 *pair1 = &subtable->u.pair1;
+ OTF_PairSet *set = pair1->PairSet + coverage_idx;
+ int j;
+
+ for (j = 0; j < set->PairValueCount; j++)
+ if (set->PairValueRecord[j].SecondGlyph == nextg->glyph_id)
{
- g++, gidx++;
- g->positioning_type = lookup->LookupType;
- g->f.f2.format = pair1->ValueFormat2;
- g->f.f2.value = &set->PairValueRecord[j].Value2;
+ if (pair1->ValueFormat1)
+ {
+ g->positioning_type = lookup_type;
+ g->f.f2.format = pair1->ValueFormat1;
+ g->f.f2.value = &set->PairValueRecord[j].Value1;
+ }
+ gidx = next_gidx;
+ if (pair1->ValueFormat2)
+ {
+ nextg->positioning_type = lookup_type;
+ nextg->f.f2.format = pair1->ValueFormat2;
+ nextg->f.f2.value = &set->PairValueRecord[j].Value2;
+ gidx++;
+ }
+ break;
}
- }
- }
- else if (subtable->Format == 2)
- {
- OTF_GPOS_Pair2 *pair2 = &subtable->u.pair2;
- unsigned class1, class2;
-
- // printf ("GPOS 2-2: c:0x%x g:0x%x\n", g->c, g->glyph_id);
- gidx++;
- class1 = get_class_def (&pair2->ClassDef1, g->glyph_id);
- class2 = get_class_def (&pair2->ClassDef2, g[1].glyph_id);
- g->positioning_type = lookup->LookupType;
- g->f.f2.format = pair2->ValueFormat1;
- g->f.f2.value
- = &pair2->Class1Record[class1].Class2Record[class2].Value1;
- if (pair2->ValueFormat2)
- {
- g++, gidx++;
- g->positioning_type = lookup->LookupType;
- g->f.f2.format = pair2->ValueFormat2;
- g->f.f2.value
- = &pair2->Class1Record[class1].Class2Record[class2].Value2;
- }
- }
+ }
+ else if (subtable->Format == 2)
+ {
+ OTF_GPOS_Pair2 *pair2 = &subtable->u.pair2;
+ unsigned class1, class2;
+
+ class1 = get_class_def (&pair2->ClassDef1, g->glyph_id);
+ class2 = get_class_def (&pair2->ClassDef2, nextg->glyph_id);
+ if (pair2->ValueFormat1)
+ {
+ g->positioning_type = lookup_type;
+ g->f.f2.format = pair2->ValueFormat1;
+ g->f.f2.value
+ = &pair2->Class1Record[class1].Class2Record[class2].Value1;
+ }
+ gidx = next_gidx;
+ if (pair2->ValueFormat2)
+ {
+ nextg->positioning_type = lookup_type;
+ nextg->f.f2.format = pair2->ValueFormat2;
+ nextg->f.f2.value
+ = &pair2->Class1Record[class1].Class2Record[class2].Value2;
+ gidx++;
+ }
+ }
+ }
break;
case 3:
{
OTF_GPOS_Cursive1 *cursive1 = &subtable->u.cursive1;
- g->positioning_type = lookup->LookupType;
+ g->positioning_type = lookup_type;
g->f.f3.entry_anchor
= &cursive1->EntryExitRecord[coverage_idx].EntryAnchor;
g->f.f3.exit_anchor
OTF_GPOS_MarkBase1 *mark_base1 = &subtable->u.mark_base1;
OTF_MarkRecord *mark_record;
OTF_AnchorRecord *base_record;
- int coverage_idx_base
- = get_coverage_index (&mark_base1->BaseCoverage,
- g[-1].glyph_id);
+ OTF_Glyph *baseg;
+ int coverage_idx_base;
+ for (baseg = g - 1;
+ baseg >= gstring->glyphs && IGNORED_GLYPH (baseg, flag);
+ baseg--);
+ if (baseg < gstring->glyphs)
+ continue;
+ coverage_idx_base
+ = get_coverage_index (&mark_base1->BaseCoverage,
+ baseg->glyph_id);
if (coverage_idx_base < 0)
continue;
- // printf ("GPOS 4-1: c:0x%x g:0x%x\n", g->c, g->glyph_id);
mark_record = mark_base1->MarkArray.MarkRecord + coverage_idx;
base_record
= mark_base1->BaseArray.AnchorRecord + coverage_idx_base;
g->f.f4.mark_anchor = &mark_record->MarkAnchor;
g->f.f4.base_anchor
= &base_record->Anchor[mark_record->Class];
- g->positioning_type = lookup->LookupType;
- break;
+ g->positioning_type = lookup_type;
}
break;
continue;
if (subtable->Format == 1)
{
- /* As the document of this lookup type is quite
- ambiguous, and we can't know the exact procedure to
- handle it?!? */
- OTF_ERROR (OTF_ERROR_GPOS_DRIVE, " (not yet supported)");
+ OTF_GPOS_MarkLig1 *mark_lig1 = &subtable->u.mark_lig1;
+ OTF_Glyph *ligg;
+ int coverage_idx_lig;
+ OTF_MarkRecord *mark_record;
+ OTF_LigatureAttach *attach;
+ int *num_class = alloca (sizeof (int) * mark_lig1->ClassCount);
+ int j;
+
+ for (j = 0; j < mark_lig1->ClassCount; j++)
+ num_class[j] = 0;
+
+ for (ligg = g - 1;
+ (ligg >= gstring->glyphs
+ && (IGNORED_GLYPH (ligg, flag)
+ || ligg->GlyphClass > OTF_GlyphClassLigature));
+ ligg--)
+ if (ligg->positioning_type == 5
+ && ligg->MarkAttachClass < mark_lig1->ClassCount)
+ num_class[ligg->MarkAttachClass]++;
+ if (ligg < gstring->glyphs)
+ continue;
+ coverage_idx_lig
+ = get_coverage_index (&mark_lig1->LigatureCoverage,
+ ligg->glyph_id);
+ if (coverage_idx_lig < 0)
+ continue;
+ mark_record = mark_lig1->MarkArray.MarkRecord + coverage_idx;
+ g->MarkAttachClass = mark_record->Class;
+ attach = (mark_lig1->LigatureArray.LigatureAttach
+ + coverage_idx_lig);
+ for (j = 0; j < attach->ComponentCount; j++)
+ {
+ OTF_Anchor *lig_anchor
+ = attach->ComponentRecord[j].LigatureAnchor;
+
+ if (lig_anchor[mark_record->Class].AnchorFormat
+ && num_class[mark_record->Class]-- == 0)
+ {
+ g->positioning_type = lookup_type;
+ g->f.f5.mark_anchor = &mark_record->MarkAnchor;
+ g->f.f5.ligature_anchor = lig_anchor + mark_record->Class;
+ break;
+ }
+ }
}
break;
OTF_GPOS_MarkMark1 *mark_mark1 = &subtable->u.mark_mark1;
OTF_MarkRecord *mark1_record;
OTF_AnchorRecord *mark2_record;
- int coverage_idx_base
- = get_coverage_index (&mark_mark1->Mark2Coverage,
- g[-1].glyph_id);
+ OTF_Glyph *prevg;
+ int coverage_idx_base;
+ for (prevg = g - 1;
+ prevg >= gstring->glyphs && IGNORED_GLYPH (prevg, flag);
+ prevg--);
+ if (prevg < gstring->glyphs)
+ continue;
+ coverage_idx_base
+ = get_coverage_index (&mark_mark1->Mark2Coverage,
+ prevg->glyph_id);
if (coverage_idx_base < 0)
continue;
- // printf ("GPOS 6-1: c:0x%x g:0x%x\n", g->c, g->glyph_id);
mark1_record = mark_mark1->Mark1Array.MarkRecord + coverage_idx;
mark2_record
= mark_mark1->Mark2Array.AnchorRecord + coverage_idx_base;
g->f.f6.mark1_anchor = &mark1_record->MarkAnchor;
g->f.f6.mark2_anchor
= &mark2_record->Anchor[mark1_record->Class];
- g->positioning_type = lookup->LookupType;
+ g->positioning_type = lookup_type;
break;
}
break;
case 7:
- OTF_ERROR (OTF_ERROR_GPOS_DRIVE, " (not yet supported)");
+ if (subtable->Format == 1)
+ {
+ OTF_GPOS_Context1 *context1 = &subtable->u.context1;
+ OTF_RuleSet *set = context1->RuleSet + coverage_idx;
+ OTF_Rule *rule;
+ int orig_used;
+ int j, k;
+
+ for (j = 0; j < set->RuleCount; j++)
+ {
+ rule = set->Rule + j;
+ if (match_ids (gstring, gidx + 1, flag,
+ rule->GlyphCount - 1, rule->Input) < 0)
+ continue;
+ orig_used = gstring->used;
+ for (k = 0; k < rule->LookupCount; k++)
+ lookup_gpos (lookup_list,
+ rule->LookupRecord[k].LookupListIndex,
+ gstring,
+ gidx + rule->LookupRecord[k].SequenceIndex);
+ gidx += rule->GlyphCount + (gstring->used - orig_used);
+ break;
+ }
+ }
+ else if (subtable->Format == 2)
+ {
+ OTF_GPOS_Context2 *context2 = &subtable->u.context2;
+ OTF_ClassSet *set;
+ OTF_ClassRule *rule;
+ unsigned class;
+ int orig_used;
+ int j, k;
+
+ class = get_class_def (&context2->ClassDef, g->glyph_id);
+ set = context2->ClassSet + class;
+ if (set)
+ for (j = 0; j < set->ClassRuleCnt; j++)
+ {
+ rule = set->ClassRule + j;
+ if (match_classes (&context2->ClassDef,
+ gstring, gidx + 1, flag,
+ rule->GlyphCount - 1, rule->Class)
+ < 0)
+ continue;
+ orig_used = gstring->used;
+ for (k = 0; k < rule->LookupCount; k++)
+ lookup_gpos (lookup_list,
+ rule->LookupRecord[k].LookupListIndex,
+ gstring,
+ gidx + rule->LookupRecord[k].SequenceIndex);
+ gidx += rule->GlyphCount + (gstring->used - orig_used);
+ break;
+ }
+ }
+ else /* subtable->Format == 3 */
+ {
+ OTF_GPOS_Context3 *context3 = &subtable->u.context3;
+ int orig_used;
+ int j;
+
+ if (match_coverages (gstring, gidx + 1, flag,
+ context3->GlyphCount - 1,
+ context3->Coverage + 1) < 0)
+ continue;
+ orig_used = gstring->used;
+ for (j = 0; j < context3->LookupCount; j++)
+ lookup_gpos (lookup_list,
+ context3->LookupRecord[j].LookupListIndex,
+ gstring,
+ gidx + context3->LookupRecord[j].SequenceIndex);
+ gidx += context3->GlyphCount + (gstring->used - orig_used);
+ }
break;
case 8:
if (subtable->Format == 1)
- OTF_ERROR (OTF_ERROR_GPOS_DRIVE, " (not yet supported)");
+ {
+ OTF_GPOS_ChainContext1 *context1 = &subtable->u.chain_context1;
+ OTF_ChainRuleSet *set = context1->ChainRuleSet + coverage_idx;
+ int orig_used;
+ int j, k;
+
+ for (j = 0; j < set->ChainRuleCount; j++)
+ {
+ OTF_ChainRule *rule = set->ChainRule + j;
+
+ if (gidx < rule->BacktrackGlyphCount
+ || (gidx + rule->InputGlyphCount
+ + rule->LookaheadGlyphCount) > gstring->used)
+ continue;
+ if (match_chain_ids (gstring, gidx, flag, rule) < 0)
+ continue;
+ orig_used = gstring->used;
+ for (k = 0; k < rule->LookupCount; k++)
+ lookup_gpos (lookup_list,
+ rule->LookupRecord[k].LookupListIndex,
+ gstring,
+ gidx + rule->LookupRecord[k].SequenceIndex);
+ gidx += rule->InputGlyphCount + (gstring->used - orig_used);
+ break;
+ }
+ }
else if (subtable->Format == 2)
{
OTF_GPOS_ChainContext2 *context2 = &subtable->u.chain_context2;
int j;
int orig_used;
- // printf ("GPOS 8-2: c:0x%x g:0x%x\n", g->c, g->glyph_id);
class = get_class_def (&context2->InputClassDef, g->glyph_id);
set = context2->ChainClassSet + class;
for (j = 0; j < set->ChainClassRuleCnt; j++)
{
OTF_ChainClassRule *rule = set->ChainClassRule + j;
- int fore_idx = gidx + rule->InputGlyphCount;
int k;
if (gidx < rule->BacktrackGlyphCount
|| (gidx + rule->InputGlyphCount
- + rule->LookaheadGlyphCount) >= gstring->used)
+ + rule->LookaheadGlyphCount) > gstring->used)
continue;
- for (k = 0; k < rule->BacktrackGlyphCount; k++)
- if (get_class_def (&context2->BacktrackClassDef,
- gstring->glyphs[gidx - 1 - k].glyph_id)
- != rule->Backtrack[k])
- break;
- if (k < rule->BacktrackGlyphCount)
- continue;
- for (k = 1; k < rule->InputGlyphCount; k++)
- if (get_class_def (&context2->InputClassDef,
- gstring->glyphs[gidx + k].glyph_id)
- != rule->Input[k - 1])
- break;
- if (k < rule->InputGlyphCount)
- continue;
- for (k = 0; k < rule->LookaheadGlyphCount; k++)
- if (get_class_def (&context2->LookaheadClassDef,
- gstring->glyphs[fore_idx + k].glyph_id)
- != rule->LookAhead[k])
- break;
- if (k < rule->LookaheadGlyphCount)
+ if (match_chain_classes (gstring, gidx, flag,
+ &context2->BacktrackClassDef,
+ &context2->InputClassDef,
+ &context2->LookaheadClassDef,
+ rule) < 0)
continue;
-
orig_used = gstring->used;
for (k = 0; k < rule->LookupCount; k++)
lookup_gpos (lookup_list,
}
}
else if (subtable->Format == 3)
- OTF_ERROR (OTF_ERROR_GPOS_DRIVE, " (not yet supported)");
+ {
+ OTF_GPOS_ChainContext3 *context3 = &subtable->u.chain_context3;
+ int orig_used;
+ int j;
+
+ if (gidx < context3->BacktrackGlyphCount
+ || (gidx + context3->InputGlyphCount
+ + context3->LookaheadGlyphCount) > gstring->used)
+ continue;
+ if (match_chain_coverages (gstring, gidx, flag, context3) < 0)
+ continue;
+ orig_used = gstring->used;
+ for (j = 0; j < context3->LookupCount; j++)
+ lookup_gpos (lookup_list,
+ context3->LookupRecord[j].LookupListIndex,
+ gstring,
+ gidx + context3->LookupRecord[j].SequenceIndex);
+ gidx += context3->InputGlyphCount + (gstring->used - orig_used);
+ }
else
OTF_ERROR (OTF_ERROR_GPOS_DRIVE, " (invalid subformat)");
break;
- case 9:
- OTF_ERROR (OTF_ERROR_GPOS_DRIVE, " (not yet supported)");
- break;
-
default:
continue;
}
}
if (gidx == orig_gidx)
+ gidx++;
+ return gidx;
+}
+
+static int
+lookup_encoding_0 (OTF_EncodingSubtable0 *sub0, OTF_GlyphString *gstring)
+{
+ int i, c;
+
+ for (i = 0; i < gstring->used; i++)
{
- // printf ("not applied\n");
- gidx++;
+ c = gstring->glyphs[i].c;
+ if (c < 0 || c >= 256)
+ gstring->glyphs[i].glyph_id = 0;
+ else
+ gstring->glyphs[i].glyph_id = sub0->glyphIdArray[c];
}
- else
+ return 0;
+}
+
+static int
+lookup_encoding_2 (OTF_EncodingSubtable2 *sub2, OTF_GlyphString *gstring)
+{
+ return 0;
+}
+
+static int
+lookup_encoding_4 (OTF_EncodingSubtable4 *sub4, OTF_GlyphString *gstring)
+{
+ int i, j, c;
+ int segCount = sub4->segCountX2 / 2;
+
+ for (i = 0; i < gstring->used; i++)
{
- // printf ("done\n");
+ c = gstring->glyphs[i].c;
+ if (c < 0)
+ gstring->glyphs[i].glyph_id = 0;
+ for (j = 0; j < segCount; j++)
+ {
+ OTF_cmapSegument *seg = sub4->segments + i;
+
+ if (c >= seg->startCount && c <= seg->endCount)
+ {
+ if (seg->idRangeOffset == 0xFFFF)
+ gstring->glyphs[i].glyph_id = c + seg->idDelta;
+ else
+ gstring->glyphs[i].glyph_id
+ = sub4->glyphIdArray[seg->idRangeOffset
+ + (c - seg->startCount)];
+ break;
+ }
+ }
}
- return gidx;
+
+ return 0;
+}
+
+static int
+lookup_encoding_6 (OTF_EncodingSubtable6 *sub6, OTF_GlyphString *gstring)
+{
+ return 0;
+}
+
+static int
+lookup_encoding_8 (OTF_EncodingSubtable8 *sub8, OTF_GlyphString *gstring)
+{
+ return 0;
+}
+
+static int
+lookup_encoding_10 (OTF_EncodingSubtable10 *sub10, OTF_GlyphString *gstring)
+{
+ return 0;
+}
+
+static int
+lookup_encoding_12 (OTF_EncodingSubtable12 *sub12, OTF_GlyphString *gstring)
+{
+ return 0;
}
\f
return 0;
}
+
+int
+OTF_drive_cmap2 (OTF *otf, OTF_GlyphString *gstring,
+ int platform_id, int encoding_id)
+{
+ OTF_cmap *cmap;
+ int i;
+ char *errfmt = "CMAP Looking up%s";
+ int errret = -1;
+ OTF_EncodingRecord *enc;
+
+ if (! otf->cmap
+ && OTF_get_table (otf, "cmap") < 0)
+ return -1;
+
+ cmap = otf->cmap;
+ for (i = 0; i < cmap->numTables; i++)
+ if (cmap->EncodingRecord[i].platformID == platform_id
+ && cmap->EncodingRecord[i].encodingID == encoding_id)
+ break;
+ if (i == cmap->numTables)
+ OTF_ERROR (OTF_ERROR_CMAP_DRIVE, " (unknown platformID/encodingID)");
+ enc = cmap->EncodingRecord + i;
+ switch (enc->subtable.format)
+ {
+ case 0: return lookup_encoding_0 (enc->subtable.f.f0, gstring);
+ case 2: return lookup_encoding_2 (enc->subtable.f.f2, gstring);
+ case 4: return lookup_encoding_4 (enc->subtable.f.f4, gstring);
+ case 6: return lookup_encoding_6 (enc->subtable.f.f6, gstring);
+ case 8: return lookup_encoding_8 (enc->subtable.f.f8, gstring);
+ case 10: return lookup_encoding_10 (enc->subtable.f.f10, gstring);
+ case 12: return lookup_encoding_12 (enc->subtable.f.f12, gstring);
+ }
+ OTF_ERROR (OTF_ERROR_CMAP_DRIVE, " (invalid format)");
+}
+
+
int
OTF_get_unicode (OTF *otf, OTF_GlyphID code)
{
return 0;
}
-
-int
-OTF_drive_gsub (OTF *otf, OTF_GlyphString *gstring,
- char *script, char *language, char *features)
+static int
+OTF_drive_gsub_internal (OTF *otf, OTF_GlyphString *gstring,
+ char *script, char *language, char *features,
+ int alternate_subst)
{
char *errfmt = "GSUB driving%s";
int errret = -1;
int *lookup_indices;
int i, n;
+ for (i = 0; i < gstring->used; i++)
+ gstring->glyphs[i].f.index.from = gstring->glyphs[i].f.index.to = i;
+
if (! otf->gsub
&& OTF_get_table (otf, "GSUB") < 0)
return errret;
/* One lookup may be used by multiple features. */
lookup_indices = alloca (sizeof (int)
* gsub->LookupList.LookupCount
- * gsub->FeatureList.FeatureCount);
+ * (gsub->FeatureList.FeatureCount + 1));
if (! lookup_indices)
OTF_ERROR (OTF_ERROR_MEMORY, " feature list");
- n = setup_lookup_indices (LangSys, &gsub->FeatureList,
+ n = setup_lookup_indices (&gsub->LookupList, &gsub->FeatureList,
features, lookup_indices);
if (n < 0)
return errret;
gidx = 0;
while (gidx < gstring->used)
{
- gidx = lookup_gsub (&gsub->LookupList, index, gstring, gidx);
+ gidx = lookup_gsub (otf, &gsub->LookupList, index, gstring, gidx,
+ alternate_subst);
if (gidx < 0)
return errret;
}
gidx = gstring->used - 1;
while (gidx >= 0)
{
- gidx = lookup_gsub (&gsub->LookupList, index, gstring, gidx);
+ gidx = lookup_gsub (otf, &gsub->LookupList, index, gstring, gidx,
+ alternate_subst);
if (gidx < 0)
return errret;
}
}
int
+OTF_drive_gsub (OTF *otf, OTF_GlyphString *gstring,
+ char *script, char *language, char *features)
+{
+ return OTF_drive_gsub_internal (otf, gstring, script, language, features, 0);
+}
+
+int
OTF_drive_gpos (OTF *otf, OTF_GlyphString *gstring,
char *script, char *language, char *features)
{
/* One lookup may be used by multiple features. */
lookup_indices = alloca (sizeof (int)
* gpos->LookupList.LookupCount
- * gpos->FeatureList.FeatureCount);
+ * (gpos->FeatureList.FeatureCount + 1));
if (! lookup_indices)
OTF_ERROR (OTF_ERROR_MEMORY, " feature list");
- n = setup_lookup_indices (LangSys, &gpos->FeatureList,
+ n = setup_lookup_indices (&gpos->LookupList, &gpos->FeatureList,
features, lookup_indices);
if (n < 0)
return errret;
+ for (i = 0; i < gstring->used; i++)
+ gstring->glyphs[i].positioning_type = 0;
+
for (i = 0; i < n; i++)
{
int index = lookup_indices[i];
return -1;
return 0;
}
+
+int
+OTF_drive_gsub_alternate (OTF *otf, OTF_GlyphString *gstring,
+ char *script, char *language, char *features)
+{
+ return OTF_drive_gsub_internal (otf, gstring, script, language, features, 1);
+}
projects / m17n / libotf.git / blobdiff