From e4c8121ed46b4c91886a2ee9ce35297cb34c1875 Mon Sep 17 00:00:00 2001
From: Yury Delendik <ydelendik@mozilla.com>
Date: Sat, 13 Oct 2012 11:41:44 -0500
Subject: [PATCH] Suppresses useless for PDF rendering font tables

---
 src/fonts.js                 | 6 ++++++
 test/pdfs/issue1233.pdf.link | 1 +
 test/test_manifest.json      | 8 ++++++++
 3 files changed, 15 insertions(+)
 create mode 100644 test/pdfs/issue1233.pdf.link

diff --git a/src/fonts.js b/src/fonts.js
index 17d847a8d..8ea308b2e 100644
--- a/src/fonts.js
+++ b/src/fonts.js
@@ -3227,6 +3227,9 @@ var Font = (function FontClosure() {
       var requiredTables = ['OS/2', 'cmap', 'head', 'hhea',
                              'hmtx', 'maxp', 'name', 'post'];
 
+      var optionalTables = ['cvt ', 'fpgm', 'glyf', 'loca', 'prep',
+                            'CFF ', 'VORG', 'vhea', 'vmtx'];
+
       var header = readOpenTypeHeader(font);
       var numTables = header.numTables;
 
@@ -3252,6 +3255,9 @@ var Font = (function FontClosure() {
             os2 = table;
 
           requiredTables.splice(index, 1);
+        } else if (optionalTables.indexOf(table.tag) < 0) {
+          // skipping table if it's not a required or optional table
+          continue;
         } else {
           if (table.tag == 'vmtx')
             vmtx = table;
diff --git a/test/pdfs/issue1233.pdf.link b/test/pdfs/issue1233.pdf.link
new file mode 100644
index 000000000..66c9bc7da
--- /dev/null
+++ b/test/pdfs/issue1233.pdf.link
@@ -0,0 +1 @@
+http://princexml.com/samples/math.pdf
diff --git a/test/test_manifest.json b/test/test_manifest.json
index e8cac9a20..3e54bfd54 100644
--- a/test/test_manifest.json
+++ b/test/test_manifest.json
@@ -602,6 +602,14 @@
       "link": true,
       "type": "eq"
     },
+    {  "id": "issue1233",
+      "file": "pdfs/issue1233.pdf",
+      "md5": "2d3565b0a286e29955796c37c66326c1",
+      "rounds": 1,
+      "pageLimit": 1,
+      "link": true,
+      "type": "eq"
+    },
     {  "id": "issue1243",
       "file": "pdfs/issue1243.pdf",
       "md5": "130c849b83513d5ac5e03c6421fc7489",