87 lines
2.3 KiB
JavaScript
87 lines
2.3 KiB
JavaScript
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import { readFile } from 'node:fs/promises'
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import { ZipReader, Uint8ArrayReader, TextWriter } from '@zip.js/zip.js';
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import {DOMParser, Node} from '@xmldom/xmldom'
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/** @import {ODTFile} from './fillOdtTemplate.js' */
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/**
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*
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* @param {Document} odtDocument
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* @returns {Element}
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*/
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function getODTTextElement(odtDocument) {
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return odtDocument.getElementsByTagName('office:body')[0]
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.getElementsByTagName('office:text')[0]
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}
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/**
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*
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* @param {string} path
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* @returns {Promise<ODTFile>}
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*/
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export async function getOdtTemplate(path) {
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const fileBuffer = await readFile(path)
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return fileBuffer.buffer
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}
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/**
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* Extracts plain text content from an ODT file, preserving line breaks
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* @param {ArrayBuffer} odtFile - The ODT file as an ArrayBuffer
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* @returns {Promise<string>} Extracted text content
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*/
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export async function getOdtTextContent(odtFile) {
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const contentDocument = await getContentDocument(odtFile)
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const odtTextElement = getODTTextElement(contentDocument)
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/**
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*
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* @param {Element} element
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* @returns {string}
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*/
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function getElementTextContent(element){
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//console.log('tagName', element.tagName)
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if(element.tagName === 'text:h' || element.tagName === 'text:p')
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return element.textContent + '\n'
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else{
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const descendantTexts = Array.from(element.childNodes)
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.filter(n => n.nodeType === Node.ELEMENT_NODE)
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.map(getElementTextContent)
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if(element.tagName === 'text:list-item')
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return `- ${descendantTexts.join('')}`
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return descendantTexts.join('')
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}
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}
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return getElementTextContent(odtTextElement)
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}
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/**
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* @param {ODTFile} odtFile
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* @returns {Promise<Document>}
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*/
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async function getContentDocument(odtFile) {
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const reader = new ZipReader(new Uint8ArrayReader(new Uint8Array(odtFile)));
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const entries = await reader.getEntries();
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const contentEntry = entries.find(entry => entry.filename === 'content.xml');
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if (!contentEntry) {
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throw new Error('No content.xml found in the ODT file');
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}
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// @ts-ignore
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const contentText = await contentEntry.getData(new TextWriter());
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await reader.close();
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const parser = new DOMParser();
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return parser.parseFromString(contentText, 'text/xml');
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}
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