[Pkg-javascript-commits] [pdf.js] 01/157: Simplify nextMissingChunk(), getEndChunk()

[David Prévot]

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taffit pushed a commit to branch master
in repository pdf.js.

commit e5477c3156a1b5dcb8f7ba3763c5d327d11cc573
Author: fkaelberer <l_l at gmx-topmail.de>
Date:   Tue Sep 30 19:42:50 2014 +0200

    Simplify nextMissingChunk(), getEndChunk()
---
 src/core/chunked_stream.js | 22 ++++------------------
 1 file changed, 4 insertions(+), 18 deletions(-)

diff --git a/src/core/chunked_stream.js b/src/core/chunked_stream.js
index 3bc293a..6522532 100644
--- a/src/core/chunked_stream.js
+++ b/src/core/chunked_stream.js
@@ -131,14 +131,9 @@ var ChunkedStream = (function ChunkedStreamClosure() {
     },
 
     nextEmptyChunk: function ChunkedStream_nextEmptyChunk(beginChunk) {
-      var chunk, n;
-      for (chunk = beginChunk, n = this.numChunks; chunk < n; ++chunk) {
-        if (!this.loadedChunks[chunk]) {
-          return chunk;
-        }
-      }
-      // Wrap around to beginning
-      for (chunk = 0; chunk < beginChunk; ++chunk) {
+      var chunk, numChunks = this.numChunks;
+      for (var i = 0; i < numChunks; ++i) {
+        chunk = (beginChunk + i) % numChunks; // Wrap around to beginning
         if (!this.loadedChunks[chunk]) {
           return chunk;
         }
@@ -416,7 +411,7 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() {
       this.requestChunks(chunksToRequest, callback);
     },
 
-    // Groups a sorted array of chunks into as few continguous larger
+    // Groups a sorted array of chunks into as few contiguous larger
     // chunks as possible
     groupChunks: function ChunkedStreamManager_groupChunks(chunks) {
       var groupedChunks = [];
@@ -541,15 +536,6 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() {
     },
 
     getEndChunk: function ChunkedStreamManager_getEndChunk(end) {
-      if (end % this.chunkSize === 0) {
-        return end / this.chunkSize;
-      }
-
-      // 0 -> 0
-      // 1 -> 1
-      // 99 -> 1
-      // 100 -> 1
-      // 101 -> 2
       var chunk = Math.floor((end - 1) / this.chunkSize) + 1;
       return chunk;
     }

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