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Convert src/core/ccitt_stream.js to use standard classes

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This commit is contained in:
Jonas Jenwald 2021-04-27 12:27:36 +02:00
parent 8ff213871b
commit 0ca63f94b4
1 changed files with 7 additions and 12 deletions
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19
src/core/ccitt_stream.js
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@ -17,9 +17,10 @@ import { Dict, isDict } from "./primitives.js";
import { CCITTFaxDecoder } from "./ccitt.js"; import { CCITTFaxDecoder } from "./ccitt.js";
import { DecodeStream } from "./stream.js"; import { DecodeStream } from "./stream.js";
const CCITTFaxStream = (function CCITTFaxStreamClosure() { class CCITTFaxStream extends DecodeStream {
// eslint-disable-next-line no-shadow constructor(str, maybeLength, params) {
function CCITTFaxStream(str, maybeLength, params) { super(maybeLength);
this.str = str; this.str = str;
this.dict = str.dict; this.dict = str.dict;
@ -41,13 +42,9 @@ const CCITTFaxStream = (function CCITTFaxStreamClosure() {
EndOfBlock: params.get("EndOfBlock"), EndOfBlock: params.get("EndOfBlock"),
BlackIs1: params.get("BlackIs1"), BlackIs1: params.get("BlackIs1"),
}); });
DecodeStream.call(this, maybeLength);
} }
CCITTFaxStream.prototype = Object.create(DecodeStream.prototype); readBlock() {
CCITTFaxStream.prototype.readBlock = function () {
while (!this.eof) { while (!this.eof) {
const c = this.ccittFaxDecoder.readNextChar(); const c = this.ccittFaxDecoder.readNextChar();
if (c === -1) { if (c === -1) {
@ -57,9 +54,7 @@ const CCITTFaxStream = (function CCITTFaxStreamClosure() {
this.ensureBuffer(this.bufferLength + 1); this.ensureBuffer(this.bufferLength + 1);
this.buffer[this.bufferLength++] = c; this.buffer[this.bufferLength++] = c;
} }
}; }
}
return CCITTFaxStream;
})();
export { CCITTFaxStream }; export { CCITTFaxStream };