@cantoo/pdf-lib/es/core/embedders/FileEmbedder.js

Create and modify PDF files with JavaScript

import { __awaiter } from "tslib";
import PDFString from '../objects/PDFString.js';
import PDFHexString from '../objects/PDFHexString.js';
/**
 * From the PDF-A3 specification, section **3.1. Requirements - General**.
 * See:
 * * https://www.pdfa.org/wp-content/uploads/2018/10/PDF20_AN002-AF.pdf
 */
export var AFRelationship;
(function (AFRelationship) {
    AFRelationship["Source"] = "Source";
    AFRelationship["Data"] = "Data";
    AFRelationship["Alternative"] = "Alternative";
    AFRelationship["Supplement"] = "Supplement";
    AFRelationship["EncryptedPayload"] = "EncryptedPayload";
    AFRelationship["FormData"] = "EncryptedPayload";
    AFRelationship["Schema"] = "Schema";
    AFRelationship["Unspecified"] = "Unspecified";
})(AFRelationship || (AFRelationship = {}));
class FileEmbedder {
    static for(bytes, fileName, options = {}) {
        return new FileEmbedder(bytes, fileName, options);
    }
    constructor(fileData, fileName, options = {}) {
        this.fileData = fileData;
        this.fileName = fileName;
        this.options = options;
    }
    embedIntoContext(context, ref) {
        return __awaiter(this, void 0, void 0, function* () {
            const { mimeType, description, creationDate, modificationDate, afRelationship, } = this.options;
            const embeddedFileStream = context.flateStream(this.fileData, {
                Type: 'EmbeddedFile',
                Subtype: mimeType !== null && mimeType !== void 0 ? mimeType : undefined,
                Params: {
                    Size: this.fileData.length,
                    CreationDate: creationDate
                        ? PDFString.fromDate(creationDate)
                        : undefined,
                    ModDate: modificationDate
                        ? PDFString.fromDate(modificationDate)
                        : undefined,
                },
            });
            const embeddedFileStreamRef = context.register(embeddedFileStream);
            const fileSpecDict = context.obj({
                Type: 'Filespec',
                F: PDFString.of(this.fileName),
                UF: PDFHexString.fromText(this.fileName),
                EF: { F: embeddedFileStreamRef },
                Desc: description ? PDFHexString.fromText(description) : undefined,
                AFRelationship: afRelationship !== null && afRelationship !== void 0 ? afRelationship : undefined,
            });
            if (ref) {
                context.assign(ref, fileSpecDict);
                return ref;
            }
            else {
                return context.register(fileSpecDict);
            }
        });
    }
    getFileData() {
        return this.fileData;
    }
}
export default FileEmbedder;
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