#include "hb-open-type.hh"
#include "hb-subset.hh"
-#include "hb-subset-glyf.hh"
#include "hb-open-file.hh"
#include "hb-ot-cmap-table.hh"
#include "hb-ot-cff1-table.hh"
#include "hb-ot-cff2-table.hh"
#include "hb-ot-vorg-table.hh"
+#include "hb-ot-name-table.hh"
#include "hb-ot-layout-gsub-table.hh"
#include "hb-ot-layout-gpos-table.hh"
-static unsigned int
+HB_UNUSED static inline unsigned int
+_plan_estimate_subset_table_size (hb_subset_plan_t *plan,
+ unsigned int table_len);
+static inline unsigned int
_plan_estimate_subset_table_size (hb_subset_plan_t *plan,
unsigned int table_len)
{
static bool
_subset2 (hb_subset_plan_t *plan)
{
+ bool result = false;
hb_blob_t *source_blob = hb_sanitize_context_t ().reference_table<TableType> (plan->source);
const TableType *table = source_blob->as<TableType> ();
hb_tag_t tag = TableType::tableTag;
- hb_bool_t result = false;
if (source_blob->data)
{
hb_vector_t<char> buf;
+ /* TODO Not all tables are glyph-related. 'name' table size for example should not be
+ * affected by number of glyphs. Accommodate that. */
unsigned int buf_size = _plan_estimate_subset_table_size (plan, source_blob->length);
DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c initial estimated table size: %u bytes.", HB_UNTAG (tag), buf_size);
if (unlikely (!buf.alloc (buf_size)))
{
DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c failed to allocate %u bytes.", HB_UNTAG (tag), buf_size);
+ hb_blob_destroy (source_blob);
return false;
}
retry:
hb_serialize_context_t serializer ((void *) buf, buf_size);
+ serializer.start_serialize<TableType> ();
hb_subset_context_t c (plan, &serializer);
- result = table->subset (&c);
- if (serializer.in_error ())
+ bool needed = table->subset (&c);
+ if (serializer.ran_out_of_room)
{
buf_size += (buf_size >> 1) + 32;
DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c ran out of room; reallocating to %u bytes.", HB_UNTAG (tag), buf_size);
if (unlikely (!buf.alloc (buf_size)))
{
DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c failed to reallocate %u bytes.", HB_UNTAG (tag), buf_size);
+ hb_blob_destroy (source_blob);
return false;
}
goto retry;
}
+ serializer.end_serialize ();
+
+ result = !serializer.in_error ();
+
if (result)
{
- hb_blob_t *dest_blob = serializer.copy_blob ();
- DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c final subset table size: %u bytes.", HB_UNTAG (tag), dest_blob->length);
- result = c.plan->add_table (tag, dest_blob);
- hb_blob_destroy (dest_blob);
- }
- else
- {
- DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c::subset table subsetted to empty.", HB_UNTAG (tag));
- result = true;
+ if (needed)
+ {
+ hb_blob_t *dest_blob = serializer.copy_blob ();
+ DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c final subset table size: %u bytes.", HB_UNTAG (tag), dest_blob->length);
+ result = c.plan->add_table (tag, dest_blob);
+ hb_blob_destroy (dest_blob);
+ }
+ else
+ {
+ DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c::subset table subsetted to empty.", HB_UNTAG (tag));
+ }
}
}
else
bool result = true;
switch (tag) {
case HB_OT_TAG_glyf:
- result = _subset<const OT::glyf> (plan);
+ result = _subset2<const OT::glyf> (plan);
break;
case HB_OT_TAG_hdmx:
- result = _subset<const OT::hdmx> (plan);
+ result = _subset2<const OT::hdmx> (plan);
+ break;
+ case HB_OT_TAG_name:
+ result = _subset2<const OT::name> (plan);
break;
case HB_OT_TAG_head:
// TODO that won't work well if there is no glyf
DEBUG_MSG(SUBSET, nullptr, "skip hhea handled by hmtx");
return true;
case HB_OT_TAG_hmtx:
- result = _subset<const OT::hmtx> (plan);
+ result = _subset2<const OT::hmtx> (plan);
break;
case HB_OT_TAG_vhea:
DEBUG_MSG(SUBSET, nullptr, "skip vhea handled by vmtx");
return true;
case HB_OT_TAG_vmtx:
- result = _subset<const OT::vmtx> (plan);
+ result = _subset2<const OT::vmtx> (plan);
break;
case HB_OT_TAG_maxp:
- result = _subset<const OT::maxp> (plan);
+ result = _subset2<const OT::maxp> (plan);
break;
case HB_OT_TAG_loca:
DEBUG_MSG(SUBSET, nullptr, "skip loca handled by glyf");
return true;
case HB_OT_TAG_cmap:
- result = _subset<const OT::cmap> (plan);
+ result = _subset2<const OT::cmap> (plan);
break;
case HB_OT_TAG_OS2:
- result = _subset<const OT::OS2> (plan);
+ result = _subset2<const OT::OS2> (plan);
break;
case HB_OT_TAG_post:
- result = _subset<const OT::post> (plan);
+ result = _subset2<const OT::post> (plan);
break;
+
+#ifndef HB_NO_SUBSET_CFF
case HB_OT_TAG_cff1:
result = _subset<const OT::cff1> (plan);
break;
result = _subset<const OT::cff2> (plan);
break;
case HB_OT_TAG_VORG:
- result = _subset<const OT::VORG> (plan);
+ result = _subset2<const OT::VORG> (plan);
break;
+#endif
+
+#ifndef HB_NO_SUBSET_LAYOUT
case HB_OT_TAG_GDEF:
result = _subset2<const OT::GDEF> (plan);
break;
case HB_OT_TAG_GPOS:
result = _subset2<const OT::GPOS> (plan);
break;
+#endif
default:
hb_blob_t *source_table = hb_face_reference_table (plan->source, tag);
static bool
_should_drop_table (hb_subset_plan_t *plan, hb_tag_t tag)
{
+ if (plan->drop_tables->has (tag))
+ return true;
+
switch (tag) {
case HB_TAG ('c', 'v', 'a', 'r'): /* hint table, fallthrough */
case HB_TAG ('c', 'v', 't', ' '): /* hint table, fallthrough */
case HB_TAG ('h', 'd', 'm', 'x'): /* hint table, fallthrough */
case HB_TAG ('V', 'D', 'M', 'X'): /* hint table, fallthrough */
return plan->drop_hints;
+
+#ifdef HB_NO_SUBSET_LAYOUT
// Drop Layout Tables if requested.
case HB_OT_TAG_GDEF:
case HB_OT_TAG_GPOS:
case HB_OT_TAG_GSUB:
- return plan->drop_layout;
- // Drop these tables below by default, list pulled
- // from fontTools:
- case HB_TAG ('B', 'A', 'S', 'E'):
- case HB_TAG ('J', 'S', 'T', 'F'):
- case HB_TAG ('D', 'S', 'I', 'G'):
- case HB_TAG ('E', 'B', 'D', 'T'):
- case HB_TAG ('E', 'B', 'L', 'C'):
- case HB_TAG ('E', 'B', 'S', 'C'):
- case HB_TAG ('S', 'V', 'G', ' '):
- case HB_TAG ('P', 'C', 'L', 'T'):
- case HB_TAG ('L', 'T', 'S', 'H'):
- // Graphite tables:
- case HB_TAG ('F', 'e', 'a', 't'):
- case HB_TAG ('G', 'l', 'a', 't'):
- case HB_TAG ('G', 'l', 'o', 'c'):
- case HB_TAG ('S', 'i', 'l', 'f'):
- case HB_TAG ('S', 'i', 'l', 'l'):
- // Colour
- case HB_TAG ('s', 'b', 'i', 'x'):
+ case HB_TAG ('m', 'o', 'r', 'x'):
+ case HB_TAG ('m', 'o', 'r', 't'):
+ case HB_TAG ('k', 'e', 'r', 'x'):
+ case HB_TAG ('k', 'e', 'r', 'n'):
return true;
+#endif
+
default:
return false;
}
hb_tag_t table_tags[32];
unsigned int offset = 0, count;
bool success = true;
+ hb_set_t tags_set;
do {
count = ARRAY_LENGTH (table_tags);
hb_face_get_table_tags (source, offset, &count, table_tags);
for (unsigned int i = 0; i < count; i++)
{
hb_tag_t tag = table_tags[i];
- if (_should_drop_table (plan, tag))
+ if (_should_drop_table (plan, tag) && !tags_set.has (tag))
{
DEBUG_MSG(SUBSET, nullptr, "drop %c%c%c%c", HB_UNTAG (tag));
continue;
}
+ tags_set.add (tag);
success = success && _subset_table (plan, tag);
}
offset += count;
projects / platform / upstream / harfbuzz.git / blobdiff