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Removes error()

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This commit is contained in:
Yury Delendik 2017-06-28 13:51:31 -07:00
parent ac9802809c
commit d028c26210
24 changed files with 318 additions and 260 deletions
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34
src/core/stream.js
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@ -14,7 +14,7 @@
*/
import {
createObjectURL, error, info, isArray, isInt, isSpace, shadow, Util
createObjectURL, FormatError, info, isArray, isInt, isSpace, shadow, Util
} from '../shared/util';
import { Dict, isDict, isStream } from './primitives';
import { Jbig2Image } from './jbig2';
@ -392,16 +392,19 @@ var FlateStream = (function FlateStreamClosure() {
var cmf = str.getByte();
var flg = str.getByte();
if (cmf === -1 || flg === -1) {
error('Invalid header in flate stream: ' + cmf + ', ' + flg);
throw new FormatError(
`Invalid header in flate stream: ${cmf}, ${flg}`);
}
if ((cmf & 0x0f) !== 0x08) {
error('Unknown compression method in flate stream: ' + cmf + ', ' + flg);
throw new FormatError(
`Unknown compression method in flate stream: ${cmf}, ${flg}`);
}
if ((((cmf << 8) + flg) % 31) !== 0) {
error('Bad FCHECK in flate stream: ' + cmf + ', ' + flg);
throw new FormatError(`Bad FCHECK in flate stream: ${cmf}, ${flg}`);
}
if (flg & 0x20) {
error('FDICT bit set in flate stream: ' + cmf + ', ' + flg);
throw new FormatError(
`FDICT bit set in flate stream: ${cmf}, ${flg}`);
}
this.codeSize = 0;
@ -420,7 +423,7 @@ var FlateStream = (function FlateStreamClosure() {
var b;
while (codeSize < bits) {
if ((b = str.getByte()) === -1) {
error('Bad encoding in flate stream');
throw new FormatError('Bad encoding in flate stream');
}
codeBuf |= b << codeSize;
codeSize += 8;
@ -453,7 +456,7 @@ var FlateStream = (function FlateStreamClosure() {
var codeLen = code >> 16;
var codeVal = code & 0xffff;
if (codeLen < 1 || codeSize < codeLen) {
error('Bad encoding in flate stream');
throw new FormatError('Bad encoding in flate stream');
}
this.codeBuf = (codeBuf >> codeLen);
this.codeSize = (codeSize - codeLen);
@ -515,25 +518,26 @@ var FlateStream = (function FlateStreamClosure() {
var b;
if ((b = str.getByte()) === -1) {
error('Bad block header in flate stream');
throw new FormatError('Bad block header in flate stream');
}
var blockLen = b;
if ((b = str.getByte()) === -1) {
error('Bad block header in flate stream');
throw new FormatError('Bad block header in flate stream');
}
blockLen |= (b << 8);
if ((b = str.getByte()) === -1) {
error('Bad block header in flate stream');
throw new FormatError('Bad block header in flate stream');
}
var check = b;
if ((b = str.getByte()) === -1) {
error('Bad block header in flate stream');
throw new FormatError('Bad block header in flate stream');
}
check |= (b << 8);
if (check !== (~blockLen & 0xffff) &&
(blockLen !== 0 || check !== 0)) {
// Ignoring error for bad "empty" block (see issue 1277)
error('Bad uncompressed block length in flate stream');
throw new FormatError(
'Bad uncompressed block length in flate stream');
}
this.codeBuf = 0;
@ -608,7 +612,7 @@ var FlateStream = (function FlateStreamClosure() {
distCodeTable =
this.generateHuffmanTable(codeLengths.subarray(numLitCodes, codes));
} else {
error('Unknown block type in flate stream');
throw new FormatError('Unknown block type in flate stream');
}
buffer = this.buffer;
@ -666,7 +670,7 @@ var PredictorStream = (function PredictorStreamClosure() {
return str; // no prediction
}
if (predictor !== 2 && (predictor < 10 || predictor > 15)) {
error('Unsupported predictor: ' + predictor);
throw new FormatError(`Unsupported predictor: ${predictor}`);
}
if (predictor === 2) {
@ -851,7 +855,7 @@ var PredictorStream = (function PredictorStreamClosure() {
}
break;
default:
error('Unsupported predictor: ' + predictor);
throw new FormatError(`Unsupported predictor: ${predictor}`);
}
this.bufferLength += rowBytes;
};