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Use strict equalities in src/core/jbig2.js

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This commit is contained in:
Tim van der Meij 2014-08-01 23:02:29 +02:00
parent 5d0fde4a2c
commit 4899e9e54f
1 changed files with 14 additions and 14 deletions
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28
src/core/jbig2.js
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@ -477,7 +477,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
firstS += deltaFirstS;
var currentS = firstS;
do {
var currentT = (stripSize == 1 ? 0 :
var currentT = (stripSize === 1 ? 0 :
decodeInteger(contextCache, 'IAIT', decoder)); // 6.4.9
var t = stripSize * stripT + currentT;
var symbolId = decodeIAID(contextCache, decoder, symbolCodeLength);
@ -582,7 +582,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
var referredToCount = (referredFlags >> 5) & 7;
var retainBits = [referredFlags & 31];
var position = start + 6;
if (referredFlags == 7) {
if (referredFlags === 7) {
referredToCount = readUint32(data, position - 1) & 0x1FFFFFFF;
position += 3;
var bytes = (referredToCount + 7) >> 3;
@ -590,7 +590,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
while (--bytes > 0) {
retainBits.push(data[position++]);
}
} else if (referredFlags == 5 || referredFlags == 6) {
} else if (referredFlags === 5 || referredFlags === 6) {
error('JBIG2 error: invalid referred-to flags');
}
@ -600,8 +600,8 @@ var Jbig2Image = (function Jbig2ImageClosure() {
var referredTo = [];
var i, ii;
for (i = 0; i < referredToCount; i++) {
var number = (referredToSegmentNumberSize == 1 ? data[position] :
(referredToSegmentNumberSize == 2 ? readUint16(data, position) :
var number = (referredToSegmentNumberSize === 1 ? data[position] :
(referredToSegmentNumberSize === 2 ? readUint16(data, position) :
readUint32(data, position)));
referredTo.push(number);
position += referredToSegmentNumberSize;
@ -616,7 +616,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
segmentHeader.length = readUint32(data, position);
position += 4;
if (segmentHeader.length == 0xFFFFFFFF) {
if (segmentHeader.length === 0xFFFFFFFF) {
// 7.2.7 Segment data length, unknown segment length
if (segmentType === 38) { // ImmediateGenericRegion
var genericRegionInfo = readRegionSegmentInformation(data, position);
@ -639,12 +639,12 @@ var Jbig2Image = (function Jbig2ImageClosure() {
while (j < searchPatternLength && searchPattern[j] === data[i + j]) {
j++;
}
if (j == searchPatternLength) {
if (j === searchPatternLength) {
segmentHeader.length = i + searchPatternLength;
break;
}
}
if (segmentHeader.length == 0xFFFFFFFF) {
if (segmentHeader.length === 0xFFFFFFFF) {
error('JBIG2 error: segment end was not found');
}
} else {
@ -671,7 +671,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
segment.end = position;
}
segments.push(segment);
if (segmentHeader.type == 51) {
if (segmentHeader.type === 51) {
break; // end of file is found
}
}
@ -826,7 +826,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
resolutionX: readUint32(data, position + 8),
resolutionY: readUint32(data, position + 12)
};
if (pageInfo.height == 0xFFFFFFFF) {
if (pageInfo.height === 0xFFFFFFFF) {
delete pageInfo.height;
}
var pageSegmentFlags = data[position + 16];
@ -866,10 +866,10 @@ var Jbig2Image = (function Jbig2ImageClosure() {
function parseJbig2(data, start, end) {
var position = start;
if (data[position] != 0x97 || data[position + 1] != 0x4A ||
data[position + 2] != 0x42 || data[position + 3] != 0x32 ||
data[position + 4] != 0x0D || data[position + 5] != 0x0A ||
data[position + 6] != 0x1A || data[position + 7] != 0x0A) {
if (data[position] !== 0x97 || data[position + 1] !== 0x4A ||
data[position + 2] !== 0x42 || data[position + 3] !== 0x32 ||
data[position + 4] !== 0x0D || data[position + 5] !== 0x0A ||
data[position + 6] !== 0x1A || data[position + 7] !== 0x0A) {
error('JBIG2 error: invalid header');
}
var header = {};