return scm_hashq_ref (otf->get_char_table (), sym, SCM_EOL);
}
-
LY_DEFINE(ly_otf_font_table_data, "ly:otf-font-table-data", 2, 0, 0,
(SCM font, SCM tag),
- "Extract a table @var{tag} from @var{font}.")
+ "Extract a table @var{tag} from @var{font}. Return empty string for "
+ "non-existent @var{tag}.")
{
Modified_font_metric *fm
= dynamic_cast<Modified_font_metric *> (unsmob_metrics (font));
Open_type_font *otf = fm ? dynamic_cast<Open_type_font *> (fm->original_font ())
: dynamic_cast<Open_type_font *> (unsmob_metrics (font));
-
SCM_ASSERT_TYPE (otf, font, SCM_ARG1, __FUNCTION__, "Open type font");
SCM_ASSERT_TYPE (scm_is_string (tag), tag, SCM_ARG1, __FUNCTION__, "Open type font");
return scm_from_locale_stringn ((char const*) tab.to_bytes (), tab.length ());
}
+
+LY_DEFINE(ly_otf_font_p, "ly:otf-font?", 1, 0, 0,
+ (SCM font),
+ "Is @var{font} an OpenType font?")
+{
+ Modified_font_metric *fm
+ = dynamic_cast<Modified_font_metric *> (unsmob_metrics (font));
+
+ Open_type_font *otf = fm ? dynamic_cast<Open_type_font *> (fm->original_font ())
+ : dynamic_cast<Open_type_font *> (unsmob_metrics (font));
+
+ return scm_from_bool (otf);
+}