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[hb-shape/view] Add --list-tables

This commit is contained in:
Behdad Esfahbod 2023-01-15 18:14:14 -07:00
parent 3d5a922bca
commit 880d65c905
1 changed files with 23 additions and 0 deletions
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23
util/face-options.hh
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@ -60,12 +60,15 @@ struct face_options_t
char *font_file = nullptr;
unsigned face_index = 0;
hb_bool_t list_tables = false;
hb_blob_t *blob = nullptr;
hb_face_t *face = nullptr;
};
static G_GNUC_NORETURN void _list_tables (hb_face_t *face);
face_options_t::cache_t face_options_t::cache {};
void
@ -121,6 +124,25 @@ face_options_t::post_parse (GError **error)
blob = cache.blob;
face = cache.face;
if (list_tables)
_list_tables (face);
}
static G_GNUC_NORETURN void _list_tables (hb_face_t *face)
{
unsigned count = hb_face_get_table_tags (face, 0, nullptr, nullptr);
hb_tag_t *tags = (hb_tag_t *) calloc (count, sizeof (hb_tag_t));
hb_face_get_table_tags (face, 0, &count, tags);
for (unsigned i = 0; i < count; i++)
{
printf ("%c%c%c%c\n", HB_UNTAG (tags[i]));
}
free (tags);
exit (0);
}
void
@ -130,6 +152,7 @@ face_options_t::add_options (option_parser_t *parser)
{
{"font-file", 0, 0, G_OPTION_ARG_STRING, &this->font_file, "Set font file-name", "filename"},
{"face-index", 0, 0, G_OPTION_ARG_INT, &this->face_index, "Set face index (default: 0)", "index"},
{"list-tables", 0, 0, G_OPTION_ARG_NONE, &this->list_tables, "List font tables and quit", nullptr},
{nullptr}
};
parser->add_group (entries,