@cantoo/pdf-lib/es/core/objects/PDFStream.js

Create and modify PDF files with JavaScript

import { MethodNotImplementedError } from '../errors.js';
import PDFName from './PDFName.js';
import PDFNumber from './PDFNumber.js';
import PDFObject from './PDFObject.js';
import CharCodes from '../syntax/CharCodes.js';
class PDFStream extends PDFObject {
    constructor(dict) {
        super();
        this.dict = dict;
    }
    clone(_context) {
        throw new MethodNotImplementedError(this.constructor.name, 'clone');
    }
    getContentsString() {
        throw new MethodNotImplementedError(this.constructor.name, 'getContentsString');
    }
    getContents() {
        throw new MethodNotImplementedError(this.constructor.name, 'getContents');
    }
    getContentsSize() {
        throw new MethodNotImplementedError(this.constructor.name, 'getContentsSize');
    }
    updateContents(_contents) {
        throw new MethodNotImplementedError(this.constructor.name, 'updateContents');
    }
    updateDict() {
        const contentsSize = this.getContentsSize();
        this.dict.set(PDFName.Length, PDFNumber.of(contentsSize));
    }
    sizeInBytes() {
        this.updateDict();
        return this.dict.sizeInBytes() + this.getContentsSize() + 18;
    }
    toString() {
        this.updateDict();
        let streamString = this.dict.toString();
        streamString += '\nstream\n';
        streamString += this.getContentsString();
        streamString += '\nendstream';
        return streamString;
    }
    copyBytesInto(buffer, offset) {
        this.updateDict();
        const initialOffset = offset;
        offset += this.dict.copyBytesInto(buffer, offset);
        buffer[offset++] = CharCodes.Newline;
        buffer[offset++] = CharCodes.s;
        buffer[offset++] = CharCodes.t;
        buffer[offset++] = CharCodes.r;
        buffer[offset++] = CharCodes.e;
        buffer[offset++] = CharCodes.a;
        buffer[offset++] = CharCodes.m;
        buffer[offset++] = CharCodes.Newline;
        const contents = this.getContents();
        for (let idx = 0, len = contents.length; idx < len; idx++) {
            buffer[offset++] = contents[idx];
        }
        buffer[offset++] = CharCodes.Newline;
        buffer[offset++] = CharCodes.e;
        buffer[offset++] = CharCodes.n;
        buffer[offset++] = CharCodes.d;
        buffer[offset++] = CharCodes.s;
        buffer[offset++] = CharCodes.t;
        buffer[offset++] = CharCodes.r;
        buffer[offset++] = CharCodes.e;
        buffer[offset++] = CharCodes.a;
        buffer[offset++] = CharCodes.m;
        return offset - initialOffset;
    }
}
export default PDFStream;
//# sourceMappingURL=PDFStream.js.map