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Fix 'The value of offset is out of range.'

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This commit is contained in:
SpreedBLood 2021-03-13 03:13:03 +01:00
parent c0bd2fa6c1
commit f52e7773a3
1 changed files with 11 additions and 7 deletions
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18
src/swf-reader/lib/swf-buffer.js
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@ -32,7 +32,7 @@ function readFillStyle(buffer) {
*/
fillStyleType : type
};
switch (type) {
case 0x00:
fillStyle.color = buffer.readRGBA();
@ -45,7 +45,7 @@ function readFillStyle(buffer) {
break;
}
return fillStyle;
return fillStyle;
}
function readLineStyle(buffer) {
@ -92,7 +92,7 @@ function SWFBuffer( buffer ) {
}
/**
* Reads unsigned 16 or 32 Little Endian Bits
* Reads unsigned 16 or 32 Little Endian Bits
* and advance pointer to next bits / 8 bytes
*
* @param {Number} bits
@ -158,7 +158,7 @@ SWFBuffer.prototype.readString = function(encoding) {
* @return {Array} Array of RGB value
*/
SWFBuffer.prototype.readRGB = function() {
SWFBuffer.prototype.readRGB = function() {
return [this.readUInt8(), this.readUInt8(), this.readUInt8()];
};
@ -196,16 +196,20 @@ SWFBuffer.prototype.readShapeWithStyle = function() {
* @return {Object} Tag code and length
*/
SWFBuffer.prototype.readTagCodeAndLength = function() {
SWFBuffer.prototype.readTagCodeAndLength = function() {
if (this.pointer === this.length) {
return false;
}
var n = this.readUIntLE(16)
, tagType = n >> 6
, tagLength = n & RECORDHEADER_LENTH_FULL;
, tagLength = n & RECORDHEADER_LENTH_FULL;
if ( n === 0 )
return false;
if ( tagLength === RECORDHEADER_LENTH_FULL )
tagLength = this.readUIntLE(32);
tagLength = this.readUIntLE(32);
return { code : tagType, length : tagLength };
};