Sakurai/pdf.js
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Enable the no-var rule in the src/core/decode_stream.js file

Browse Source
This commit is contained in:
Jonas Jenwald 2021-04-27 16:24:33 +02:00
parent 30a22a168d
commit 8ce2cae4a7
1 changed files with 28 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
src/core/decode_stream.js
View File

@ -12,18 +12,17 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* eslint-disable no-var */
import { Stream } from "./stream.js";
import { unreachable } from "../shared/util.js";
// super class for the decoding streams
var DecodeStream = (function DecodeStreamClosure() {
const DecodeStream = (function DecodeStreamClosure() {
// Lots of DecodeStreams are created whose buffers are never used. For these
// we share a single empty buffer. This is (a) space-efficient and (b) avoids
// having special cases that would be required if we used |null| for an empty
// buffer.
var emptyBuffer = new Uint8Array(0);
const emptyBuffer = new Uint8Array(0);
// eslint-disable-next-line no-shadow
function DecodeStream(maybeMinBufferLength) {
@ -55,20 +54,20 @@ var DecodeStream = (function DecodeStreamClosure() {
return this.bufferLength === 0;
},
ensureBuffer: function DecodeStream_ensureBuffer(requested) {
var buffer = this.buffer;
const buffer = this.buffer;
if (requested <= buffer.byteLength) {
return buffer;
}
var size = this.minBufferLength;
let size = this.minBufferLength;
while (size < requested) {
size *= 2;
}
var buffer2 = new Uint8Array(size);
const buffer2 = new Uint8Array(size);
buffer2.set(buffer);
return (this.buffer = buffer2);
},
getByte: function DecodeStream_getByte() {
var pos = this.pos;
const pos = this.pos;
while (this.bufferLength <= pos) {
if (this.eof) {
return -1;
@ -78,23 +77,23 @@ var DecodeStream = (function DecodeStreamClosure() {
return this.buffer[this.pos++];
},
getUint16: function DecodeStream_getUint16() {
var b0 = this.getByte();
var b1 = this.getByte();
const b0 = this.getByte();
const b1 = this.getByte();
if (b0 === -1 || b1 === -1) {
return -1;
}
return (b0 << 8) + b1;
},
getInt32: function DecodeStream_getInt32() {
var b0 = this.getByte();
var b1 = this.getByte();
var b2 = this.getByte();
var b3 = this.getByte();
const b0 = this.getByte();
const b1 = this.getByte();
const b2 = this.getByte();
const b3 = this.getByte();
return (b0 << 24) + (b1 << 16) + (b2 << 8) + b3;
},
getBytes(length, forceClamped = false) {
var end,
pos = this.pos;
const pos = this.pos;
let end;
if (length) {
this.ensureBuffer(pos + length);
@ -103,7 +102,7 @@ var DecodeStream = (function DecodeStreamClosure() {
while (!this.eof && this.bufferLength < end) {
this.readBlock();
}
var bufEnd = this.bufferLength;
const bufEnd = this.bufferLength;
if (end > bufEnd) {
end = bufEnd;
}
@ -122,14 +121,14 @@ var DecodeStream = (function DecodeStreamClosure() {
: subarray;
},
peekByte: function DecodeStream_peekByte() {
var peekedByte = this.getByte();
const peekedByte = this.getByte();
if (peekedByte !== -1) {
this.pos--;
}
return peekedByte;
},
peekBytes(length, forceClamped = false) {
var bytes = this.getBytes(length, forceClamped);
const bytes = this.getBytes(length, forceClamped);
this.pos -= bytes.length;
return bytes;
},
@ -139,7 +138,7 @@ var DecodeStream = (function DecodeStreamClosure() {
this.readBlock();
}
} else {
var end = start + length;
const end = start + length;
while (this.bufferLength <= end && !this.eof) {
this.readBlock();
}
@ -171,7 +170,7 @@ var DecodeStream = (function DecodeStreamClosure() {
return DecodeStream;
})();
var StreamsSequenceStream = (function StreamsSequenceStreamClosure() {
const StreamsSequenceStream = (function StreamsSequenceStreamClosure() {
// eslint-disable-next-line no-shadow
function StreamsSequenceStream(streams) {
this.streams = streams;
@ -191,24 +190,24 @@ var StreamsSequenceStream = (function StreamsSequenceStreamClosure() {
StreamsSequenceStream.prototype = Object.create(DecodeStream.prototype);
StreamsSequenceStream.prototype.readBlock = function streamSequenceStreamReadBlock() {
var streams = this.streams;
const streams = this.streams;
if (streams.length === 0) {
this.eof = true;
return;
}
var stream = streams.shift();
var chunk = stream.getBytes();
var bufferLength = this.bufferLength;
var newLength = bufferLength + chunk.length;
var buffer = this.ensureBuffer(newLength);
const stream = streams.shift();
const chunk = stream.getBytes();
const bufferLength = this.bufferLength;
const newLength = bufferLength + chunk.length;
const buffer = this.ensureBuffer(newLength);
buffer.set(chunk, bufferLength);
this.bufferLength = newLength;
};
StreamsSequenceStream.prototype.getBaseStreams = function StreamsSequenceStream_getBaseStreams() {
var baseStreams = [];
for (var i = 0, ii = this.streams.length; i < ii; i++) {
var stream = this.streams[i];
const baseStreams = [];
for (let i = 0, ii = this.streams.length; i < ii; i++) {
const stream = this.streams[i];
if (stream.getBaseStreams) {
baseStreams.push(...stream.getBaseStreams());
}