Emit a warning message for .otf files, which are not supported yet
diff --git a/src/com/google/typography/font/compression/SimpleRunner.java b/src/com/google/typography/font/compression/SimpleRunner.java
index 7298293..d9d5d6f 100644
--- a/src/com/google/typography/font/compression/SimpleRunner.java
+++ b/src/com/google/typography/font/compression/SimpleRunner.java
@@ -3,6 +3,9 @@
import com.google.common.io.Files;
import com.google.typography.font.sfntly.Font;
import com.google.typography.font.sfntly.FontFactory;
+import com.google.typography.font.sfntly.Tag;
+import com.google.typography.font.sfntly.table.truetype.GlyphTable;
+import com.google.typography.font.sfntly.table.truetype.LocaTable;
import java.io.File;
import java.io.IOException;
@@ -41,6 +44,11 @@
byte[] bytes = Files.toByteArray(file);
Font font = FONT_FACTORY.loadFonts(bytes)[0];
+ if (!isTrueType(font)) {
+ System.err.printf("WARNING: unable to compress: %s (not a TrueType font)\n", filename);
+ continue;
+ }
+
byte[] gzip = Experiment.run(font, GZIP);
byte[] woff2 = Experiment.run(font, WOFF2);
@@ -58,6 +66,12 @@
}
}
+ private static boolean isTrueType(Font font) {
+ LocaTable loca = font.getTable(Tag.loca);
+ GlyphTable glyf = font.getTable(Tag.glyf);
+ return (loca != null && glyf != null);
+ }
+
private static void usage() {
System.err.println("Usage: SimpleRunner font...");
System.exit(-1);