pdf.js/src/core/ccitt_stream.js
Jonas Jenwald 9416b14e8b Re-factor how the ESLint no-var rule is enabled in the src/ folder
This simplifies/consolidates the ESLint configuration slightly in the `src/` folder, and prevents the addition of any new files where `var` is being used.[1]
Hence we no longer need to manually add `/* eslint no-var: error */` in files, which is easy to forget, and can instead disable the rule in the `src/core/` files where `var` is still in use.

---
[1] Obviously the `no-var` rule can, in the same way as every other rule, be disabled on a case-by-case basis where actually necessary.
2020-10-03 20:15:29 +02:00

67 lines
1.9 KiB
JavaScript

/* Copyright 2012 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* eslint-disable no-var */
import { Dict, isDict } from "./primitives.js";
import { CCITTFaxDecoder } from "./ccitt.js";
import { DecodeStream } from "./stream.js";
var CCITTFaxStream = (function CCITTFaxStreamClosure() {
// eslint-disable-next-line no-shadow
function CCITTFaxStream(str, maybeLength, params) {
this.str = str;
this.dict = str.dict;
if (!isDict(params)) {
params = Dict.empty;
}
const source = {
next() {
return str.getByte();
},
};
this.ccittFaxDecoder = new CCITTFaxDecoder(source, {
K: params.get("K"),
EndOfLine: params.get("EndOfLine"),
EncodedByteAlign: params.get("EncodedByteAlign"),
Columns: params.get("Columns"),
Rows: params.get("Rows"),
EndOfBlock: params.get("EndOfBlock"),
BlackIs1: params.get("BlackIs1"),
});
DecodeStream.call(this, maybeLength);
}
CCITTFaxStream.prototype = Object.create(DecodeStream.prototype);
CCITTFaxStream.prototype.readBlock = function () {
while (!this.eof) {
const c = this.ccittFaxDecoder.readNextChar();
if (c === -1) {
this.eof = true;
return;
}
this.ensureBuffer(this.bufferLength + 1);
this.buffer[this.bufferLength++] = c;
}
};
return CCITTFaxStream;
})();
export { CCITTFaxStream };