+#include "international.hh"
#include "program-option.hh"
#include "source-file.hh"
#include "memory-stream.hh"
}
LY_DEFINE (ly_otf_2_cff, "ly:otf->cff",
- 1, 0, 0, (SCM otf_file_name),
+ 1, 1, 0, (SCM otf_file_name, SCM idx),
"Convert the contents of an OTF file to a CFF file,"
- " returning it as a string.")
+ " returning it as a string. The optional"
+ " @var{idx} argument is useful for OpenType/CFF collections (OTC)"
+ " only; it specifies the font index within the OTC. The default"
+ " value of @var{idx} is@tie{}0.")
{
LY_ASSERT_TYPE (scm_is_string, otf_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 (otf_file_name);
debug_output ("[" + file_name); // start message on a new line
- FT_Face face = open_ft_face (file_name, 0 /* index */);
+ 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);
string table = get_otf_table (face, "CFF ");
SCM asscm = scm_from_latin1_stringn ((char *) table.data (),
table.length ());
+ FT_Done_Face (face);
debug_output ("]", false);