64 lines
2.0 KiB
Dart
64 lines
2.0 KiB
Dart
import 'dart:html' show HttpRequest, Element, querySelector;
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final excluded_keywords = {'index', 'CONTRIBUTING', 'LICENSE', 'README'};
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// Get the sitemap content
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Future<String> fetchRemoteSitemap() async {
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const path = '/sitemap.html';
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try {
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return await HttpRequest.getString(path);
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} catch (e) {
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print('Couldn’t open $path');
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}
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return 'Error';
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}
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// Parse the list of elements and detect pages from this list
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Map<String, String> detectPages(List<Element> t_sitemap,
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[String? t_prefix, Map<String, String>? t_links]) {
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t_links ??= <String, String>{};
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// parse each element in sitemap
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for (var elem in t_sitemap) {
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// if it’s a link
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if (elem.innerHtml!.startsWith('<a')) {
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elem = elem.children[0];
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final url = elem.attributes['href']!;
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final text = elem.children[0].text;
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if (excluded_keywords.contains(text) ||
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excluded_keywords.contains(url.substring(0, url.length - 5))) {
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continue;
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}
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t_links!['/$url'] = ((t_prefix == null) ? text : '$text ($t_prefix)')!;
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} else {
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final prefix = (t_prefix == null)
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? elem.firstChild!.text!.replaceAll('\n', '')
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: '$t_prefix / ${elem.firstChild!.text}'.replaceAll('\n', '');
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t_links = detectPages(elem.children[0].children, prefix, t_links);
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}
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}
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return t_links!;
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}
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// This function returns a Map which contains all links to languages detected
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// from the sitemap.
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Future<Map<String, String>> parseSitemap() async {
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final content = await fetchRemoteSitemap();
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final sitemap = Element.ul()..innerHtml = content;
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final sitemapNodes = sitemap.querySelector('ul')!.children;
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return detectPages(sitemapNodes);
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}
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Future<void> createSitemap() async {
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final sitemap = await parseSitemap();
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final pages = querySelector('#drop-page')!;
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sitemap.forEach((url, name) {
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final link = Element.li()
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..classes.add('dropdown-item')
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..append(Element.a()
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..attributes['href'] = url
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..innerText = name);
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pages.append(link);
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});
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}
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