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Make subset input const in the subsetting operation. Don't modify the subset input's sets.

This commit is contained in:
Garret Rieger 2021-06-09 10:42:48 -07:00
parent 1060b04938
commit edb57a8d9a
4 changed files with 16 additions and 9 deletions
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19
src/hb-subset-plan.cc
View File

@ -400,6 +400,13 @@ _nameid_closure (hb_face_t *face,
#endif
}
static hb_set_t* copy (const hb_set_t* other)
{
hb_set_t* set = hb_set_create ();
set->set (other);
return set;
}
/**
* hb_subset_plan_create:
* Computes a plan for subsetting the supplied face according
@ -412,7 +419,7 @@ _nameid_closure (hb_face_t *face,
**/
hb_subset_plan_t *
hb_subset_plan_create (hb_face_t *face,
hb_subset_input_t *input)
const hb_subset_input_t *input)
{
hb_subset_plan_t *plan;
if (unlikely (!(plan = hb_object_create<hb_subset_plan_t> ())))
@ -428,12 +435,12 @@ hb_subset_plan_create (hb_face_t *face,
plan->prune_unicode_ranges = !input->no_prune_unicode_ranges;
plan->retain_all_layout_features = input->retain_all_layout_features;
plan->unicodes = hb_set_create ();
plan->name_ids = hb_set_reference (input->name_ids);
plan->name_ids = copy (plan->name_ids);
_nameid_closure (face, plan->name_ids);
plan->name_languages = hb_set_reference (input->name_languages);
plan->layout_features = hb_set_reference (input->layout_features);
plan->glyphs_requested = hb_set_reference (input->glyphs);
plan->drop_tables = hb_set_reference (input->drop_tables);
plan->name_languages = copy (input->name_languages);
plan->layout_features = copy (input->layout_features);
plan->glyphs_requested = copy (input->glyphs);
plan->drop_tables = copy (input->drop_tables);
plan->source = hb_face_reference (face);
plan->dest = hb_face_builder_create ();

2
src/hb-subset-plan.hh
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@ -204,7 +204,7 @@ typedef struct hb_subset_plan_t hb_subset_plan_t;
HB_INTERNAL hb_subset_plan_t *
hb_subset_plan_create (hb_face_t *face,
hb_subset_input_t *input);
const hb_subset_input_t *input);
HB_INTERNAL void
hb_subset_plan_destroy (hb_subset_plan_t *plan);

2
src/hb-subset.cc
View File

@ -303,7 +303,7 @@ _subset_table (hb_subset_plan_t *plan, hb_tag_t tag)
* Subsets a font according to provided input.
**/
hb_face_t *
hb_subset (hb_face_t *source, hb_subset_input_t *input)
hb_subset (hb_face_t *source, const hb_subset_input_t *input)
{
if (unlikely (!input || !source)) return hb_face_get_empty ();

2
src/hb-subset.h
View File

@ -119,7 +119,7 @@ hb_subset_input_get_no_prune_unicode_ranges (hb_subset_input_t *subset_input);
/* hb_subset () */
HB_EXTERN hb_face_t *
hb_subset (hb_face_t *source, hb_subset_input_t *input);
hb_subset (hb_face_t *source, const hb_subset_input_t *input);
HB_END_DECLS