+
+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}. Return empty string"
+ " for non-existent @var{tag}.")
+{
+ Modified_font_metric *fm
+ = unsmob<Modified_font_metric> (font);
+ Open_type_font *otf = fm
+ ? dynamic_cast<Open_type_font *> (fm->original_font ())
+ : unsmob<Open_type_font> (font);
+
+ SCM_ASSERT_TYPE (otf, font, SCM_ARG1, __FUNCTION__, "OpenType font");
+ LY_ASSERT_TYPE (scm_is_string, tag, 2);
+
+ char ctag [5] = " ";
+
+ string tag_string = ly_scm2string (tag);
+ strncpy (ctag, tag_string.c_str (), tag_string.length ());
+
+ string tab = otf->get_otf_table (string (ctag));
+
+ return scm_from_latin1_stringn ((char const *) tab.data (), 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
+ = unsmob<Modified_font_metric> (font);
+ Open_type_font *otf = fm
+ ? dynamic_cast<Open_type_font *> (fm->original_font ())
+ : unsmob<Open_type_font> (font);
+
+ return scm_from_bool (otf);
+}
+
+LY_DEFINE (ly_otf_glyph_count, "ly:otf-glyph-count", 1, 0, 0,
+ (SCM font),
+ "Return the number of glyphs in @var{font}.")
+{
+ Modified_font_metric *fm
+ = unsmob<Modified_font_metric> (font);
+ Open_type_font *otf = fm
+ ? dynamic_cast<Open_type_font *> (fm->original_font ())
+ : unsmob<Open_type_font> (font);
+
+ SCM_ASSERT_TYPE (otf, font, SCM_ARG1, __FUNCTION__, "OpenType font");
+
+ return scm_from_int ((int) otf->count ());
+}
+
+LY_DEFINE (ly_otf_glyph_list, "ly:otf-glyph-list", 1, 0, 0,
+ (SCM font),
+ "Return a list of glyph names for @var{font}.")
+{
+ Modified_font_metric *fm
+ = unsmob<Modified_font_metric> (font);
+ Open_type_font *otf = fm
+ ? dynamic_cast<Open_type_font *> (fm->original_font ())
+ : unsmob<Open_type_font> (font);
+
+ SCM_ASSERT_TYPE (otf, font, SCM_ARG1, __FUNCTION__, "OpenType font");
+
+ return otf->glyph_list ();
+}
+
+LY_DEFINE (ly_get_font_format, "ly:get-font-format",
+ 1, 1, 0, (SCM font_file_name, SCM idx),
+ "Get the font format for @var{font_file_name},"
+ " returning it as a symbol. The optional"
+ " @var{idx} argument is useful for TrueType Collections (TTC) and"
+ " OpenType/CFF collections (OTC) only;"
+ " it specifies the font index within the TTC/OTC."
+ " The default value of @var{idx} is@tie{}0.")
+{
+ LY_ASSERT_TYPE (scm_is_string, font_file_name, 1);
+
+ int i = 0;
+ if (!SCM_UNBNDP (idx))
+ {
+ LY_ASSERT_TYPE (scm_is_integer, idx, 2);
+ i = scm_to_int (idx);
+ if (i < 0)
+ {
+ warning (_ ("font index must be non-negative, using index 0"));
+ i = 0;
+ }
+ }
+
+ string file_name = ly_scm2string (font_file_name);
+
+ FT_Face face;
+ /* check whether font index is valid */
+ if (i > 0)
+ {
+ face = open_ft_face (file_name, -1);
+ if (i >= face->num_faces)
+ {
+ warning (_f ("font index %d too large for font `%s', using index 0",
+ i, file_name.c_str ()));
+ i = 0;
+ }
+ FT_Done_Face (face);
+ }
+
+ face = open_ft_face (file_name, i);
+ SCM asscm = scm_from_ascii_symbol (FT_Get_Font_Format (face));
+ FT_Done_Face (face);
+
+ return asscm;
+}