FOP-3093: Stop reading ttf if we hit last offset

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@1904293 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 22 insertions, 0 deletions

diff --git a/fop-core/src/test/java/org/apache/fop/fonts/truetype/TTFFileTestCase.java b/fop-core/src/test/java/org/apache/fop/fonts/truetype/TTFFileTestCase.java
index c2d84482f..061353abb 100644
--- a/fop-core/src/test/java/org/apache/fop/fonts/truetype/TTFFileTestCase.java
+++ b/fop-core/src/test/java/org/apache/fop/fonts/truetype/TTFFileTestCase.java
@@ -29,6 +29,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
+import org.junit.Assert;
 import org.junit.Test;
 
 import static org.junit.Assert.assertEquals;
@@ -595,4 +596,25 @@ public class TTFFileTestCase {
         ttfFile.mtxTab[0] = new OFMtxEntry();
         ttfFile.readPostScript();
     }
+
+    @Test
+    public void testStopReadAtLastOffset() throws IOException {
+        ByteArrayOutputStream bos = new ByteArrayOutputStream();
+        DataOutputStream dos = new DataOutputStream(bos);
+        dos.writeShort(0);
+        dos.writeShort(4);
+        dos.writeShort(4);
+        dos.writeLong(0);
+        TTFFile ttfFile = new TTFFile();
+        ttfFile.dirTabs = new HashMap<>();
+        ttfFile.dirTabs.put(OFTableName.LOCA, new OFDirTabEntry());
+        ttfFile.dirTabs.put(OFTableName.GLYF, new OFDirTabEntry());
+        ttfFile.fontFile = new FontFileReader(new ByteArrayInputStream(bos.toByteArray()));
+        ttfFile.numberOfGlyphs = 2;
+        ttfFile.mtxTab = new OFMtxEntry[2];
+        ttfFile.mtxTab[0] = new OFMtxEntry();
+        ttfFile.mtxTab[1] = new OFMtxEntry();
+        ttfFile.updateBBoxAndOffset();
+        Assert.assertEquals(ttfFile.mtxTab[0].getBoundingBox()[0], 4);
+    }
 }