Trilium export

"use strict"; const sql = require('../../services/sql'); const html = require('html'); const tar = require('tar-stream'); const sanitize = require("sanitize-filename"); const repository = require("../../services/repository"); const utils = require('../../services/utils'); async function exportNote(req, res) { const noteId = req.params.noteId; const format = req.params.format; const branchId = await sql.getValue('SELECT branchId FROM branches WHERE noteId = ?', [noteId]); if (format === 'tar') { await exportToTar(branchId, res); } else if (format === 'opml') { await exportToOpml(branchId, res); } else { return [404, "Unrecognized export format " + format]; } } function escapeXmlAttribute(text) { return text.replace(/&/g, '&') .replace(//g, '>') .replace(/"/g, '"') .replace(/'/g, '''); } function prepareText(text) { const newLines = text.replace(/(]*>|)/g, '\n') .replace(/ /g, ' '); // nbsp isn't in XML standard (only HTML) const stripped = utils.stripTags(newLines); const escaped = escapeXmlAttribute(stripped); return escaped.replace(/\n/g, ' '); } async function exportToOpml(branchId, res) { const branch = await repository.getBranch(branchId); const note = await branch.getNote(); const title = (branch.prefix ? (branch.prefix + ' - ') : '') + note.title; const sanitizedTitle = sanitize(title); async function exportNoteInner(branchId) { const branch = await repository.getBranch(branchId); const note = await branch.getNote(); const title = (branch.prefix ? (branch.prefix + ' - ') : '') + note.title; const preparedTitle = prepareText(title); const preparedContent = prepareText(note.content); res.write(`\n`); for (const child of await note.getChildBranches()) { await exportNoteInner(child.branchId); } res.write(''); } res.setHeader('Content-Disposition', 'file; filename="' + sanitizedTitle + '.opml"'); res.setHeader('Content-Type', 'text/x-opml'); res.write(` Trilium export `); await exportNoteInner(branchId); res.write(` `); res.end(); } async function exportToTar(branchId, res) { const pack = tar.pack(); const exportedNoteIds = []; const name = await exportNoteInner(branchId, ''); async function exportNoteInner(branchId, directory) { const branch = await repository.getBranch(branchId); const note = await branch.getNote(); const childFileName = directory + sanitize(note.title); if (exportedNoteIds.includes(note.noteId)) { saveMetadataFile(childFileName, { version: 1, clone: true, noteId: note.noteId, prefix: branch.prefix }); return; } const metadata = { version: 1, clone: false, noteId: note.noteId, title: note.title, prefix: branch.prefix, type: note.type, mime: note.mime, labels: (await note.getLabels()).map(label => { return { name: label.name, value: label.value }; }) }; if (metadata.labels.find(label => label.name === 'excludeFromExport')) { return; } saveMetadataFile(childFileName, metadata); saveDataFile(childFileName, note); exportedNoteIds.push(note.noteId); for (const child of await note.getChildBranches()) { await exportNoteInner(child.branchId, childFileName + "/"); } return childFileName; } function saveDataFile(childFileName, note) { const content = note.type === 'text' ? html.prettyPrint(note.content, {indent_size: 2}) : note.content; pack.entry({name: childFileName + ".dat", size: content.length}, content); } function saveMetadataFile(childFileName, metadata) { const metadataJson = JSON.stringify(metadata, null, '\t'); pack.entry({name: childFileName + ".meta", size: metadataJson.length}, metadataJson); } pack.finalize(); res.setHeader('Content-Disposition', 'file; filename="' + name + '.tar"'); res.setHeader('Content-Type', 'application/tar'); pack.pipe(res); } module.exports = { exportNote };