mirror of
https://github.com/zadam/trilium.git
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644 lines
23 KiB
TypeScript
644 lines
23 KiB
TypeScript
"use strict";
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import html from "html";
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import dateUtils from "../date_utils.js";
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import path from "path";
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import mimeTypes from "mime-types";
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import mdService from "./markdown.js";
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import packageInfo from "../../../package.json" with { type: "json" };
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import { getContentDisposition, escapeHtml, getResourceDir } from "../utils.js";
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import protectedSessionService from "../protected_session.js";
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import sanitize from "sanitize-filename";
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import fs from "fs";
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import becca from "../../becca/becca.js";
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import archiver from "archiver";
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import log from "../log.js";
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import TaskContext from "../task_context.js";
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import ValidationError from "../../errors/validation_error.js";
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import type NoteMeta from "../meta/note_meta.js";
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import type AttachmentMeta from "../meta/attachment_meta.js";
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import type AttributeMeta from "../meta/attribute_meta.js";
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import type BBranch from "../../becca/entities/bbranch.js";
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import type { Response } from "express";
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import type { NoteMetaFile } from "../meta/note_meta.js";
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import cssContent from "@triliumnext/ckeditor5/content.css";
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type RewriteLinksFn = (content: string, noteMeta: NoteMeta) => string;
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export interface AdvancedExportOptions {
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/**
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* If `true`, then only the note's content will be kept. If `false` (default), then each page will have its own <html> template.
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*/
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skipHtmlTemplate?: boolean;
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/**
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* Provides a custom function to rewrite the links found in HTML or Markdown notes. This method is called for every note imported, if it's of the right type.
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*
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* @param originalRewriteLinks the original rewrite links function. Can be used to access the default behaviour without having to reimplement it.
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* @param getNoteTargetUrl the method to obtain a note's target URL, used internally by `originalRewriteLinks` but can be used here as well.
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* @returns a function to rewrite the links in HTML or Markdown notes.
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*/
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customRewriteLinks?: (originalRewriteLinks: RewriteLinksFn, getNoteTargetUrl: (targetNoteId: string, sourceMeta: NoteMeta) => string | null) => RewriteLinksFn;
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}
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async function exportToZip(taskContext: TaskContext, branch: BBranch, format: "html" | "markdown", res: Response | fs.WriteStream, setHeaders = true, zipExportOptions?: AdvancedExportOptions) {
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if (!["html", "markdown"].includes(format)) {
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throw new ValidationError(`Only 'html' and 'markdown' allowed as export format, '${format}' given`);
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}
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const archive = archiver("zip", {
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zlib: { level: 9 } // Sets the compression level.
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});
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const noteIdToMeta: Record<string, NoteMeta> = {};
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function getUniqueFilename(existingFileNames: Record<string, number>, fileName: string) {
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const lcFileName = fileName.toLowerCase();
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if (lcFileName in existingFileNames) {
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let index;
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let newName;
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do {
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index = existingFileNames[lcFileName]++;
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newName = `${index}_${lcFileName}`;
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} while (newName in existingFileNames);
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return `${index}_${fileName}`;
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} else {
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existingFileNames[lcFileName] = 1;
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return fileName;
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}
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}
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function getDataFileName(type: string | null, mime: string, baseFileName: string, existingFileNames: Record<string, number>): string {
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let fileName = baseFileName.trim();
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if (!fileName) {
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fileName = "note";
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}
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// Crop fileName to avoid its length exceeding 30 and prevent cutting into the extension.
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if (fileName.length > 30) {
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// We use regex to match the extension to preserve multiple dots in extensions (e.g. .tar.gz).
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let match = fileName.match(/(\.[a-zA-Z0-9_.!#-]+)$/);
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let ext = match ? match[0] : "";
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// Crop the extension if extension length exceeds 30
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const croppedExt = ext.slice(-30);
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// Crop the file name section and append the cropped extension
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fileName = fileName.slice(0, 30 - croppedExt.length) + croppedExt;
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}
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let existingExtension = path.extname(fileName).toLowerCase();
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let newExtension;
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// the following two are handled specifically since we always want to have these extensions no matter the automatic detection
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// and/or existing detected extensions in the note name
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if (type === "text" && format === "markdown") {
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newExtension = "md";
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} else if (type === "text" && format === "html") {
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newExtension = "html";
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} else if (mime === "application/x-javascript" || mime === "text/javascript") {
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newExtension = "js";
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} else if (type === "canvas" || mime === "application/json") {
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newExtension = "json";
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} else if (existingExtension.length > 0) {
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// if the page already has an extension, then we'll just keep it
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newExtension = null;
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} else {
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if (mime?.toLowerCase()?.trim() === "image/jpg") {
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newExtension = "jpg";
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} else if (mime?.toLowerCase()?.trim() === "text/mermaid") {
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newExtension = "txt";
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} else {
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newExtension = mimeTypes.extension(mime) || "dat";
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}
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}
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// if the note is already named with the extension (e.g. "image.jpg"), then it's silly to append the exact same extension again
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if (newExtension && existingExtension !== `.${newExtension.toLowerCase()}`) {
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fileName += `.${newExtension}`;
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}
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return getUniqueFilename(existingFileNames, fileName);
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}
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function createNoteMeta(branch: BBranch, parentMeta: Partial<NoteMeta>, existingFileNames: Record<string, number>): NoteMeta | null {
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const note = branch.getNote();
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if (note.hasOwnedLabel("excludeFromExport")) {
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return null;
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}
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const title = note.getTitleOrProtected();
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const completeTitle = branch.prefix ? `${branch.prefix} - ${title}` : title;
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let baseFileName = sanitize(completeTitle);
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if (baseFileName.length > 200) {
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// the actual limit is 256 bytes(!) but let's be conservative
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baseFileName = baseFileName.substr(0, 200);
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}
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if (!parentMeta.notePath) {
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throw new Error("Missing parent note path.");
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}
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const notePath = parentMeta.notePath.concat([note.noteId]);
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if (note.noteId in noteIdToMeta) {
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const fileName = getUniqueFilename(existingFileNames, `${baseFileName}.clone.${format === "html" ? "html" : "md"}`);
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const meta: NoteMeta = {
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isClone: true,
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noteId: note.noteId,
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notePath: notePath,
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title: note.getTitleOrProtected(),
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prefix: branch.prefix,
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dataFileName: fileName,
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type: "text", // export will have text description
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format: format
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};
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return meta;
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}
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const meta: Partial<NoteMeta> = {};
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meta.isClone = false;
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meta.noteId = note.noteId;
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meta.notePath = notePath;
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meta.title = note.getTitleOrProtected();
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meta.notePosition = branch.notePosition;
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meta.prefix = branch.prefix;
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meta.isExpanded = branch.isExpanded;
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meta.type = note.type;
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meta.mime = note.mime;
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meta.attributes = note.getOwnedAttributes().map((attribute) => {
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const attrMeta: AttributeMeta = {
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type: attribute.type,
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name: attribute.name,
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value: attribute.value,
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isInheritable: attribute.isInheritable,
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position: attribute.position
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};
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return attrMeta;
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});
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taskContext.increaseProgressCount();
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if (note.type === "text") {
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meta.format = format;
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}
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noteIdToMeta[note.noteId] = meta as NoteMeta;
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// sort children for having a stable / reproducible export format
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note.sortChildren();
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const childBranches = note.getChildBranches().filter((branch) => branch?.noteId !== "_hidden");
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const available = !note.isProtected || protectedSessionService.isProtectedSessionAvailable();
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// if it's a leaf, then we'll export it even if it's empty
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if (available && (note.getContent().length > 0 || childBranches.length === 0)) {
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meta.dataFileName = getDataFileName(note.type, note.mime, baseFileName, existingFileNames);
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}
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const attachments = note.getAttachments();
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meta.attachments = attachments
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.toSorted((a, b) => ((a.attachmentId ?? "").localeCompare(b.attachmentId ?? "", "en") ?? 1))
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.map((attachment) => {
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const attMeta: AttachmentMeta = {
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attachmentId: attachment.attachmentId,
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title: attachment.title,
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role: attachment.role,
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mime: attachment.mime,
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position: attachment.position,
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dataFileName: getDataFileName(null, attachment.mime, baseFileName + "_" + attachment.title, existingFileNames)
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};
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return attMeta;
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});
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if (childBranches.length > 0) {
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meta.dirFileName = getUniqueFilename(existingFileNames, baseFileName);
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meta.children = [];
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// namespace is shared by children in the same note
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const childExistingNames = {};
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for (const childBranch of childBranches) {
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if (!childBranch) {
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continue;
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}
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const note = createNoteMeta(childBranch, meta as NoteMeta, childExistingNames);
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// can be undefined if export is disabled for this note
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if (note) {
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meta.children.push(note);
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}
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}
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}
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return meta as NoteMeta;
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}
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function getNoteTargetUrl(targetNoteId: string, sourceMeta: NoteMeta): string | null {
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const targetMeta = noteIdToMeta[targetNoteId];
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if (!targetMeta || !targetMeta.notePath || !sourceMeta.notePath) {
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return null;
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}
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const targetPath = targetMeta.notePath.slice();
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const sourcePath = sourceMeta.notePath.slice();
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// > 1 for the edge case that targetPath and sourcePath are exact same (a link to itself)
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while (targetPath.length > 1 && sourcePath.length > 1 && targetPath[0] === sourcePath[0]) {
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targetPath.shift();
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sourcePath.shift();
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}
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let url = "../".repeat(sourcePath.length - 1);
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for (let i = 0; i < targetPath.length - 1; i++) {
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const meta = noteIdToMeta[targetPath[i]];
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if (meta.dirFileName) {
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url += `${encodeURIComponent(meta.dirFileName)}/`;
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}
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}
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const meta = noteIdToMeta[targetPath[targetPath.length - 1]];
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// link can target note which is only "folder-note" and as such, will not have a file in an export
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url += encodeURIComponent(meta.dataFileName || meta.dirFileName || "");
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return url;
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}
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const rewriteFn = (zipExportOptions?.customRewriteLinks ? zipExportOptions?.customRewriteLinks(rewriteLinks, getNoteTargetUrl) : rewriteLinks);
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function rewriteLinks(content: string, noteMeta: NoteMeta): string {
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content = content.replace(/src="[^"]*api\/images\/([a-zA-Z0-9_]+)\/[^"]*"/g, (match, targetNoteId) => {
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const url = getNoteTargetUrl(targetNoteId, noteMeta);
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return url ? `src="${url}"` : match;
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});
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content = content.replace(/src="[^"]*api\/attachments\/([a-zA-Z0-9_]+)\/image\/[^"]*"/g, (match, targetAttachmentId) => {
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const url = findAttachment(targetAttachmentId);
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return url ? `src="${url}"` : match;
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});
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content = content.replace(/href="[^"]*#root[^"]*attachmentId=([a-zA-Z0-9_]+)\/?"/g, (match, targetAttachmentId) => {
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const url = findAttachment(targetAttachmentId);
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return url ? `href="${url}"` : match;
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});
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content = content.replace(/href="[^"]*#root[a-zA-Z0-9_\/]*\/([a-zA-Z0-9_]+)[^"]*"/g, (match, targetNoteId) => {
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const url = getNoteTargetUrl(targetNoteId, noteMeta);
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return url ? `href="${url}"` : match;
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});
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return content;
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function findAttachment(targetAttachmentId: string) {
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let url;
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const attachmentMeta = (noteMeta.attachments || []).find((attMeta) => attMeta.attachmentId === targetAttachmentId);
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if (attachmentMeta) {
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// easy job here, because attachment will be in the same directory as the note's data file.
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url = attachmentMeta.dataFileName;
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} else {
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log.info(`Could not find attachment meta object for attachmentId '${targetAttachmentId}'`);
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}
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return url;
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}
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}
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function prepareContent(title: string, content: string | Buffer, noteMeta: NoteMeta): string | Buffer {
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if (["html", "markdown"].includes(noteMeta?.format || "")) {
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content = content.toString();
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content = rewriteFn(content, noteMeta);
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}
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if (noteMeta.format === "html" && typeof content === "string") {
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if (!content.substr(0, 100).toLowerCase().includes("<html") && !zipExportOptions?.skipHtmlTemplate) {
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if (!noteMeta?.notePath?.length) {
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throw new Error("Missing note path.");
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}
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const cssUrl = `${"../".repeat(noteMeta.notePath.length - 1)}style.css`;
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const htmlTitle = escapeHtml(title);
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// <base> element will make sure external links are openable - https://github.com/TriliumNext/Trilium/issues/1289#issuecomment-704066809
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content = `<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<link rel="stylesheet" href="${cssUrl}">
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<base target="_parent">
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<title data-trilium-title>${htmlTitle}</title>
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</head>
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<body>
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<div class="content">
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<h1 data-trilium-h1>${htmlTitle}</h1>
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<div class="ck-content">${content}</div>
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</div>
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</body>
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</html>`;
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}
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return content.length < 100_000 ? html.prettyPrint(content, { indent_size: 2 }) : content;
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} else if (noteMeta.format === "markdown" && typeof content === "string") {
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let markdownContent = mdService.toMarkdown(content);
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if (markdownContent.trim().length > 0 && !markdownContent.startsWith("# ")) {
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markdownContent = `# ${title}\r
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${markdownContent}`;
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}
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return markdownContent;
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} else {
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return content;
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}
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}
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function saveNote(noteMeta: NoteMeta, filePathPrefix: string) {
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log.info(`Exporting note '${noteMeta.noteId}'`);
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if (!noteMeta.noteId || noteMeta.title === undefined) {
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throw new Error("Missing note meta.");
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}
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if (noteMeta.isClone) {
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const targetUrl = getNoteTargetUrl(noteMeta.noteId, noteMeta);
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let content: string | Buffer = `<p>This is a clone of a note. Go to its <a href="${targetUrl}">primary location</a>.</p>`;
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content = prepareContent(noteMeta.title, content, noteMeta);
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archive.append(content, { name: filePathPrefix + noteMeta.dataFileName });
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return;
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}
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const note = becca.getNote(noteMeta.noteId);
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if (!note) {
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throw new Error("Unable to find note.");
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}
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if (!note.utcDateModified) {
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throw new Error("Unable to find modification date.");
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}
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if (noteMeta.dataFileName) {
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const content = prepareContent(noteMeta.title, note.getContent(), noteMeta);
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archive.append(content, {
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name: filePathPrefix + noteMeta.dataFileName,
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date: dateUtils.parseDateTime(note.utcDateModified)
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});
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}
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taskContext.increaseProgressCount();
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for (const attachmentMeta of noteMeta.attachments || []) {
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if (!attachmentMeta.attachmentId) {
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continue;
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}
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const attachment = note.getAttachmentById(attachmentMeta.attachmentId);
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const content = attachment.getContent();
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archive.append(content, {
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name: filePathPrefix + attachmentMeta.dataFileName,
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date: dateUtils.parseDateTime(note.utcDateModified)
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});
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}
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if (noteMeta.children?.length || 0 > 0) {
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const directoryPath = filePathPrefix + noteMeta.dirFileName;
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// create directory
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archive.append("", { name: `${directoryPath}/`, date: dateUtils.parseDateTime(note.utcDateModified) });
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for (const childMeta of noteMeta.children || []) {
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saveNote(childMeta, `${directoryPath}/`);
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}
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}
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}
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function saveNavigation(rootMeta: NoteMeta, navigationMeta: NoteMeta) {
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if (!navigationMeta.dataFileName) {
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return;
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}
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function saveNavigationInner(meta: NoteMeta) {
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let html = "<li>";
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const escapedTitle = escapeHtml(`${meta.prefix ? `${meta.prefix} - ` : ""}${meta.title}`);
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if (meta.dataFileName && meta.noteId) {
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const targetUrl = getNoteTargetUrl(meta.noteId, rootMeta);
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html += `<a href="${targetUrl}" target="detail">${escapedTitle}</a>`;
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} else {
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html += escapedTitle;
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}
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if (meta.children && meta.children.length > 0) {
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html += "<ul>";
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for (const child of meta.children) {
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html += saveNavigationInner(child);
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}
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html += "</ul>";
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}
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return `${html}</li>`;
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}
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const fullHtml = `<html>
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<head>
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<meta charset="utf-8">
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<link rel="stylesheet" href="style.css">
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</head>
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<body>
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<ul>${saveNavigationInner(rootMeta)}</ul>
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</body>
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</html>`;
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const prettyHtml = fullHtml.length < 100_000 ? html.prettyPrint(fullHtml, { indent_size: 2 }) : fullHtml;
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archive.append(prettyHtml, { name: navigationMeta.dataFileName });
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}
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function saveIndex(rootMeta: NoteMeta, indexMeta: NoteMeta) {
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let firstNonEmptyNote;
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let curMeta = rootMeta;
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if (!indexMeta.dataFileName) {
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return;
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}
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while (!firstNonEmptyNote) {
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if (curMeta.dataFileName && curMeta.noteId) {
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firstNonEmptyNote = getNoteTargetUrl(curMeta.noteId, rootMeta);
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}
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if (curMeta.children && curMeta.children.length > 0) {
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curMeta = curMeta.children[0];
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} else {
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break;
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}
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}
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const fullHtml = `<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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</head>
|
|
<frameset cols="25%,75%">
|
|
<frame name="navigation" src="navigation.html">
|
|
<frame name="detail" src="${firstNonEmptyNote}">
|
|
</frameset>
|
|
</html>`;
|
|
|
|
archive.append(fullHtml, { name: indexMeta.dataFileName });
|
|
}
|
|
|
|
function saveCss(rootMeta: NoteMeta, cssMeta: NoteMeta) {
|
|
if (!cssMeta.dataFileName) {
|
|
return;
|
|
}
|
|
|
|
archive.append(cssContent, { name: cssMeta.dataFileName });
|
|
}
|
|
|
|
try {
|
|
const existingFileNames: Record<string, number> = format === "html" ? { navigation: 0, index: 1 } : {};
|
|
const rootMeta = createNoteMeta(branch, { notePath: [] }, existingFileNames);
|
|
if (!rootMeta) {
|
|
throw new Error("Unable to create root meta.");
|
|
}
|
|
|
|
const metaFile: NoteMetaFile = {
|
|
formatVersion: 2,
|
|
appVersion: packageInfo.version,
|
|
files: [rootMeta]
|
|
};
|
|
|
|
let navigationMeta: NoteMeta | null = null;
|
|
let indexMeta: NoteMeta | null = null;
|
|
let cssMeta: NoteMeta | null = null;
|
|
|
|
if (format === "html") {
|
|
navigationMeta = {
|
|
noImport: true,
|
|
dataFileName: "navigation.html"
|
|
};
|
|
|
|
metaFile.files.push(navigationMeta);
|
|
|
|
indexMeta = {
|
|
noImport: true,
|
|
dataFileName: "index.html"
|
|
};
|
|
|
|
metaFile.files.push(indexMeta);
|
|
|
|
cssMeta = {
|
|
noImport: true,
|
|
dataFileName: "style.css"
|
|
};
|
|
|
|
metaFile.files.push(cssMeta);
|
|
}
|
|
|
|
for (const noteMeta of Object.values(noteIdToMeta)) {
|
|
// filter out relations which are not inside this export
|
|
noteMeta.attributes = (noteMeta.attributes || []).filter((attr) => {
|
|
if (attr.type !== "relation") {
|
|
return true;
|
|
} else if (attr.value in noteIdToMeta) {
|
|
return true;
|
|
} else if (attr.value === "root" || attr.value?.startsWith("_")) {
|
|
// relations to "named" noteIds can be preserved
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
});
|
|
}
|
|
|
|
if (!rootMeta) {
|
|
// corner case of disabled export for exported note
|
|
if ("sendStatus" in res) {
|
|
res.sendStatus(400);
|
|
}
|
|
return;
|
|
}
|
|
|
|
const metaFileJson = JSON.stringify(metaFile, null, "\t");
|
|
|
|
archive.append(metaFileJson, { name: "!!!meta.json" });
|
|
|
|
saveNote(rootMeta, "");
|
|
|
|
if (format === "html") {
|
|
if (!navigationMeta || !indexMeta || !cssMeta) {
|
|
throw new Error("Missing meta.");
|
|
}
|
|
|
|
saveNavigation(rootMeta, navigationMeta);
|
|
saveIndex(rootMeta, indexMeta);
|
|
saveCss(rootMeta, cssMeta);
|
|
}
|
|
|
|
const note = branch.getNote();
|
|
const zipFileName = `${branch.prefix ? `${branch.prefix} - ` : ""}${note.getTitleOrProtected() || "note"}.zip`;
|
|
|
|
if (setHeaders && "setHeader" in res) {
|
|
res.setHeader("Content-Disposition", getContentDisposition(zipFileName));
|
|
res.setHeader("Content-Type", "application/zip");
|
|
}
|
|
|
|
archive.pipe(res);
|
|
await archive.finalize();
|
|
taskContext.taskSucceeded();
|
|
} catch (e: unknown) {
|
|
const message = `Export failed with error: ${e instanceof Error ? e.message : String(e)}`;
|
|
log.error(message);
|
|
taskContext.reportError(message);
|
|
|
|
if ("sendStatus" in res) {
|
|
res.removeHeader("Content-Disposition");
|
|
res.removeHeader("Content-Type");
|
|
res.status(500).send(message);
|
|
}
|
|
}
|
|
}
|
|
|
|
async function exportToZipFile(noteId: string, format: "markdown" | "html", zipFilePath: string, zipExportOptions?: AdvancedExportOptions) {
|
|
const fileOutputStream = fs.createWriteStream(zipFilePath);
|
|
const taskContext = new TaskContext("no-progress-reporting");
|
|
|
|
const note = becca.getNote(noteId);
|
|
|
|
if (!note) {
|
|
throw new ValidationError(`Note ${noteId} not found.`);
|
|
}
|
|
|
|
await exportToZip(taskContext, note.getParentBranches()[0], format, fileOutputStream, false, zipExportOptions);
|
|
|
|
log.info(`Exported '${noteId}' with format '${format}' to '${zipFilePath}'`);
|
|
}
|
|
|
|
export default {
|
|
exportToZip,
|
|
exportToZipFile
|
|
};
|