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[hb-info] Add --ot-script and --ot-language

This commit is contained in:
Behdad Esfahbod 2023-01-20 09:29:39 -07:00
parent edec8946ed
commit ba4f5e9f22
1 changed files with 40 additions and 6 deletions
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46
util/hb-info.cc
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@ -39,8 +39,10 @@ struct info_t
GOptionEntry misc_entries[] =
{
{"direction", 0, 0, G_OPTION_ARG_STRING, &this->direction_str, "Set direction (default: ltr)", "ltr/rtl/ttb/btt"},
{"language", 0, 0, G_OPTION_ARG_STRING, &this->language_str, "Set language (default: $LANG)", "BCP 47 tag"},
{"script", 0, 0, G_OPTION_ARG_STRING, &this->script_str, "Set script (default: none)", "ISO-15924 tag"},
{"script", 0, 0, G_OPTION_ARG_STRING, &this->script_str, "Set script (default: none)", "ISO-15924 tag, eg. 'Latn'"},
{"language", 0, 0, G_OPTION_ARG_STRING, &this->language_str, "Set language (default: $LANG)", "BCP 47 tag, eg. 'en'"},
{"ot-script", 0, 0, G_OPTION_ARG_STRING, &this->ot_script_str, "Set OpenType script tag (default: none)","tag, eg. 'latn'"},
{"ot-language", 0, 0, G_OPTION_ARG_STRING, &this->ot_language_str, "Set OpenType language tag (default: none)", "tag, eg. 'ENG'"},
{nullptr}
};
@ -103,6 +105,8 @@ struct info_t
hb_direction_t direction = HB_DIRECTION_LTR;
hb_script_t script = HB_SCRIPT_INVALID;
hb_language_t language = HB_LANGUAGE_INVALID;
char *ot_script_str = nullptr;
char *ot_language_str = nullptr;
hb_bool_t all = false;
@ -521,6 +525,11 @@ struct info_t
void
_list_features_no_script ()
{
if (verbose)
{
printf ("Showing all font features with duplicates removed.\n\n");
}
hb_tag_t table_tags[] = {HB_OT_TAG_GSUB, HB_OT_TAG_GPOS, HB_TAG_NONE};
hb_set_t *features = hb_set_create ();
@ -594,7 +603,7 @@ struct info_t
hb_tag_t table_tags[] = {HB_OT_TAG_GSUB, HB_OT_TAG_GPOS, HB_TAG_NONE};
if (script == HB_SCRIPT_INVALID)
if (script == HB_SCRIPT_INVALID && !ot_script_str)
{
_list_features_no_script ();
return;
@ -616,16 +625,41 @@ struct info_t
&script_count, script_tags,
&language_count, language_tags);
if (ot_script_str)
{
script_tags[0] = hb_tag_from_string (ot_script_str, -1);
script_count = 1;
}
if (ot_language_str)
{
language_tags[0] = hb_tag_from_string (ot_language_str, -1);
language_count = 1;
}
unsigned script_index;
hb_tag_t chosen_script;
hb_ot_layout_table_select_script (face, table_tag,
script_count, script_tags,
&script_index, nullptr);
&script_index, &chosen_script);
unsigned language_index;
hb_ot_layout_script_select_language (face, table_tag,
hb_tag_t chosen_language;
hb_ot_layout_script_select_language2 (face, table_tag,
script_index,
language_count, language_tags,
&language_index);
&language_index, &chosen_language);
if (verbose)
{
if (chosen_script)
{
printf (" Script: %c%c%c%c\n", HB_UNTAG (chosen_script));
if (chosen_language)
printf (" Language: %c%c%c%c\n", HB_UNTAG (chosen_language));
else
printf (" Language: Default\n");
}
}
unsigned feature_array[32];
unsigned feature_count = sizeof feature_array / sizeof feature_array[0];