Index: lily/open-type-font-scheme.cc
diff --git a/lily/open-type-font-scheme.cc b/lily/open-type-font-scheme.cc
index 2797ac3e9e15ec5736ec38644276e2267796fe93..d69d41d8eea936b6fc438ef571707b6da7f08ddc 100644
--- a/lily/open-type-font-scheme.cc
+++ b/lily/open-type-font-scheme.cc
@@ -17,6 +17,7 @@
along with LilyPond. If not, see .
*/
+#include
#include "international.hh"
#include "modified-font-metric.hh"
#include "open-type-font.hh"
@@ -218,3 +219,161 @@ LY_DEFINE (ly_has_glyph_names_p, "ly:has-glyph-names?",
return has_glyph_names ? SCM_BOOL_T : SCM_BOOL_F;
}
+
+LY_DEFINE (ly_get_cff_offset, "ly:get-cff-offset",
+ 1, 1, 0, (SCM font_file_name, SCM idx),
+ "Get the offset of 'CFF' table for @var{font_file_name},"
+ " returning it as an integer. 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, 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);
+
+ FILE *fp = fopen (file_name.c_str (), "rb");
+ if (!fp)
+ {
+ warning (_f ("cannot open font filename `%s'", file_name.c_str ()));
+ return SCM_BOOL_F;
+ }
+
+ char buff[4];
+
+ // Read `sfnt version` (for OTF) or `TTCTag` (for OTC)
+ if (fread (buff, 4, 1, fp) != 1)
+ {
+ fclose (fp);
+ warning (_f ("cannot read %s of `%s'", "header", file_name.c_str ()));
+ return SCM_BOOL_F;
+ }
+
+ if (buff[0] == 't' && buff[1] == 't' && buff[2] == 'c' && buff[3] == 'f')
+ {
+ // For OTC
+ // Find subfont
+
+ // Skip `Version`
+ fseek (fp, 4, SEEK_CUR);
+
+ // Read `numFonts`
+ if (fread (buff, 4, 1, fp) != 1)
+ {
+ fclose (fp);
+ warning (_f ("cannot read %s of `%s'",
+ "numFonts", file_name.c_str ()));
+ return SCM_BOOL_F;
+ }
+ int numfonts =
+ static_cast(buff[0]) << 24 |
+ static_cast(buff[1]) << 16 |
+ static_cast(buff[2]) << 8 |
+ static_cast(buff[3]);
+
+ if ( i > numfonts )
+ {
+ warning (_f ("font index %d too large for font `%s', using index 0",
+ i, file_name.c_str ()));
+ i = 0;
+ }
+
+ // Read `OffsetTable[i]`
+ if (i)
+ fseek (fp, i * 4, SEEK_CUR);
+ if (fread (buff, 4, 1, fp) != 1)
+ {
+ fclose (fp);
+ warning (_f ("cannot read %s of `%s'",
+ "OffsetTable", file_name.c_str ()));
+ return SCM_BOOL_F;
+ }
+ unsigned int offset =
+ static_cast(buff[0]) << 24 |
+ static_cast(buff[1]) << 16 |
+ static_cast(buff[2]) << 8 |
+ static_cast(buff[3]);
+
+ // Seek to subfont and skip `sfnt version`
+ fseek (fp, offset + 4, SEEK_SET);
+ }
+
+ // For OTF or subfont of OTC
+
+ // Read `numTables`
+ if (fread (buff, 2, 1, fp) != 1)
+ {
+ fclose (fp);
+ warning (_f ("cannot read %s of `%s'",
+ "numTables", file_name.c_str ()));
+ return SCM_BOOL_F;
+ }
+ int numtables =
+ static_cast(buff[0]) << 8 |
+ static_cast(buff[1]);
+
+ // Skip `searchRange`, `entrySelector` and `rangeShift`
+ fseek (fp, 6, SEEK_CUR);
+
+ // Read Table Records
+ for (int t = 0; t < numtables; t++)
+ {
+ // Read `tag`
+ if (fread (buff, 4, 1, fp) != 1)
+ {
+ fclose (fp);
+ warning (_f ("cannot read %s of `%s'",
+ "tag", file_name.c_str ()));
+ return SCM_BOOL_F;
+ }
+
+ if (buff[0] == 'C' && buff[1] == 'F' && buff[2] == 'F' && buff[3] == ' ')
+ {
+ // CFF table is found.
+
+ // Skip `checkSum`
+ fseek (fp, 4, SEEK_CUR);
+
+ // Read `offset`
+ if (fread (buff, 4, 1, fp) != 1)
+ {
+ fclose (fp);
+ warning (_f ("cannot read %s of `%s'",
+ "CFF offset", file_name.c_str ()));
+ return SCM_BOOL_F;
+ }
+ unsigned int offset =
+ static_cast(buff[0]) << 24 |
+ static_cast(buff[1]) << 16 |
+ static_cast(buff[2]) << 8 |
+ static_cast(buff[3]);
+
+ // Done
+ fclose (fp);
+ return scm_from_unsigned_integer (offset);
+ }
+
+ // For non-CFF table
+
+ // Skip `checkSum`, `offset` and `length`
+ fseek (fp, 12, SEEK_CUR);
+ }
+
+ fclose (fp);
+ warning (_f ("font `%s' index %d does not have `CFF' table",
+ file_name.c_str (), i));
+ return SCM_BOOL_F;
+}
Index: scm/framework-ps.scm
diff --git a/scm/framework-ps.scm b/scm/framework-ps.scm
index 36c4dda9cbdcacafbe5a4fad77d41e6b4e18c8fe..8221e5eab35229e1e2f2e558ed1ca46e1ca3c152 100644
--- a/scm/framework-ps.scm
+++ b/scm/framework-ps.scm
@@ -245,6 +245,31 @@
binary-data
footer)))
+(define check-conflict-and-embed-cff
+ (let ((font-list '()))
+ (lambda (name file-name font-index)
+ (let* ((name-symbol (string->symbol name))
+ (args-filename-offset
+ (cons file-name (ly:get-cff-offset file-name font-index)))
+ (found-filename-offset (assq name-symbol font-list)))
+ (if found-filename-offset
+ (begin
+ (if (equal? args-filename-offset (cdr found-filename-offset))
+ (ly:debug
+ (_ "CFF font `~a' already embedded, skipping.")
+ name)
+ (ly:warning
+ (_ "Different CFF fonts which have the same name `~a' has been detected. The font cannot be embedded.")
+ name))
+ "")
+ (begin
+ (ly:debug
+ (_ "Embedding CFF font `~a'")
+ name)
+ (set! font-list
+ (acons name-symbol args-filename-offset font-list))
+ (ps-embed-cff (ly:otf->cff file-name font-index) name 0)))))))
+
(define (write-preamble paper load-fonts? port)
(define (internal-font? font-name-filename)
(let* ((font (car font-name-filename))
@@ -373,7 +398,7 @@
(ly:ttf->pfa file-name font-index))
((eq? font-format 'CFF)
;; OpenType/CFF fonts (OTF) and OpenType/CFF Collection (OTC)
- (ps-embed-cff (ly:otf->cff file-name font-index) name 0))
+ (check-conflict-and-embed-cff name file-name font-index))
(else
(ly:warning (_ "do not know how to embed ~S=~S") name file-name)
""))))