Bug 1452075 - Backport some upstream pdf.js fixes.

1 files changed, 38 insertions, 29 deletions

diff --git a/browser/extensions/pdfjs/content/build/pdf.worker.js b/browser/extensions/pdfjs/content/build/pdf.worker.js
index 4c35bd401..6ce519940 100644
--- a/browser/extensions/pdfjs/content/build/pdf.worker.js
+++ b/browser/extensions/pdfjs/content/build/pdf.worker.js
@@ -41653,6 +41653,22 @@
       var isStream = corePrimitives.isStream;
       var PostScriptLexer = corePsParser.PostScriptLexer;
       var PostScriptParser = corePsParser.PostScriptParser;
+      function toNumberArray(arr) {
+        if (!Array.isArray(arr)) {
+          return null;
+        }
+        var length = arr.length;
+        for (var i = 0; i < length; i++) {
+          if (typeof arr[i] !== 'number') {
+            var result = new Array(length);
+            for (var j = 0; j < length; j++) {
+              result[j] = +arr[j];
+            }
+            return result;
+          }
+        }
+        return arr;
+      }
       var PDFFunction = function PDFFunctionClosure() {
         var CONSTRUCT_SAMPLED = 0;
         var CONSTRUCT_INTERPOLATED = 2;
@@ -41752,8 +41768,8 @@
               }
               return out;
             }
-            var domain = dict.getArray('Domain');
-            var range = dict.getArray('Range');
+            var domain = toNumberArray(dict.getArray('Domain'));
+            var range = toNumberArray(dict.getArray('Range'));
             if (!domain || !range) {
               error('No domain or range');
             }
@@ -41761,7 +41777,7 @@
             var outputSize = range.length / 2;
             domain = toMultiArray(domain);
             range = toMultiArray(range);
-            var size = dict.get('Size');
+            var size = toNumberArray(dict.get('Size'));
             var bps = dict.get('BitsPerSample');
             var order = dict.get('Order') || 1;
             if (order !== 1) {
@@ -41769,16 +41785,16 @@
               // As in poppler, ignoring order, linear interpolation may work as good
               info('No support for cubic spline interpolation: ' + order);
             }
-            var encode = dict.getArray('Encode');
+            var encode = toNumberArray(dict.getArray('Encode'));
             if (!encode) {
               encode = [];
               for (var i = 0; i < inputSize; ++i) {
-                encode.push(0);
-                encode.push(size[i] - 1);
+                encode.push([0, size[i] - 1]);
               }
+            } else {
+              encode = toMultiArray(encode);
             }
-            encode = toMultiArray(encode);
-            var decode = dict.getArray('Decode');
+            var decode = toNumberArray(dict.getArray('Decode'));
             if (!decode) {
               decode = range;
             } else {
@@ -41873,12 +41889,9 @@
             };
           },
           constructInterpolated: function PDFFunction_constructInterpolated(str, dict) {
-            var c0 = dict.getArray('C0') || [0];
-            var c1 = dict.getArray('C1') || [1];
+            var c0 = toNumberArray(dict.getArray('C0')) || [0];
+            var c1 = toNumberArray(dict.getArray('C1')) || [1];
             var n = dict.get('N');
-            if (!isArray(c0) || !isArray(c1)) {
-              error('Illegal dictionary for interpolated function');
-            }
             var length = c0.length;
             var diff = [];
             for (var i = 0; i < length; ++i) {
@@ -41904,7 +41917,7 @@
             };
           },
           constructStiched: function PDFFunction_constructStiched(fn, dict, xref) {
-            var domain = dict.getArray('Domain');
+            var domain = toNumberArray(dict.getArray('Domain'));
             if (!domain) {
               error('No domain');
             }
@@ -41915,10 +41928,10 @@
             var fnRefs = dict.get('Functions');
             var fns = [];
             for (var i = 0, ii = fnRefs.length; i < ii; ++i) {
-              fns.push(PDFFunction.getIR(xref, xref.fetchIfRef(fnRefs[i])));
+              fns.push(PDFFunction.parse(xref, xref.fetchIfRef(fnRefs[i])));
             }
-            var bounds = dict.getArray('Bounds');
-            var encode = dict.getArray('Encode');
+            var bounds = toNumberArray(dict.getArray('Bounds'));
+            var encode = toNumberArray(dict.getArray('Encode'));
             return [
               CONSTRUCT_STICHED,
               domain,
@@ -41931,12 +41944,8 @@
             var domain = IR[1];
             var bounds = IR[2];
             var encode = IR[3];
-            var fnsIR = IR[4];
-            var fns = [];
+            var fns = IR[4];
             var tmpBuf = new Float32Array(1);
-            for (var i = 0, ii = fnsIR.length; i < ii; i++) {
-              fns.push(PDFFunction.fromIR(fnsIR[i]));
-            }
             return function constructStichedFromIRResult(src, srcOffset, dest, destOffset) {
               var clip = function constructStichedFromIRClip(v, min, max) {
                 if (v > max) {
@@ -41973,8 +41982,8 @@
             };
           },
           constructPostScript: function PDFFunction_constructPostScript(fn, dict, xref) {
-            var domain = dict.getArray('Domain');
-            var range = dict.getArray('Range');
+            var domain = toNumberArray(dict.getArray('Domain'));
+            var range = toNumberArray(dict.getArray('Range'));
             if (!domain) {
               error('No domain.');
             }
@@ -42933,8 +42942,8 @@
           case 'AlternateCS':
             var numComps = IR[1];
             var alt = IR[2];
-            var tintFnIR = IR[3];
-            return new AlternateCS(numComps, ColorSpace.fromIR(alt), PDFFunction.fromIR(tintFnIR));
+            var tintFn = IR[3];
+            return new AlternateCS(numComps, ColorSpace.fromIR(alt), tintFn);
           case 'LabCS':
             whitePoint = IR[1];
             blackPoint = IR[2];
@@ -43072,12 +43081,12 @@
                 numComps = name.length;
               }
               alt = ColorSpace.parseToIR(cs[2], xref, res);
-              var tintFnIR = PDFFunction.getIR(xref, xref.fetchIfRef(cs[3]));
+              var tintFn = PDFFunction.parse(xref, xref.fetchIfRef(cs[3]));
               return [
                 'AlternateCS',
                 numComps,
                 alt,
-                tintFnIR
+                tintFn
               ];
             case 'Lab':
               params = xref.fetchIfRef(cs[1]);
@@ -52488,4 +52497,4 @@
     }));
   }.call(pdfjsLibs));
   exports.WorkerMessageHandler = pdfjsLibs.pdfjsCoreWorker.WorkerMessageHandler;
-}));
\ No newline at end of file
+}));