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b429bb16d7
## Launch Checklist <!-- Thanks for the PR! Feel free to add or remove items from the checklist. --> In case of non 200 response the font and glyphs metadata would return the ajax error object instead of the default value. Fixes #935 - #935 - [x] Briefly describe the changes in this PR. - [x] Link to related issues. - [x] Include before/after visuals or gifs if this PR includes visual changes. - [ ] Write tests for all new functionality. - [x] Add an entry to `CHANGELOG.md` under the `## main` section.
45 lines
1.3 KiB
TypeScript
45 lines
1.3 KiB
TypeScript
import npmurl from 'url'
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function loadJSON(url: string, defaultValue: any, cb: (...args: any[]) => void) {
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fetch(url, {
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mode: 'cors',
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credentials: "same-origin"
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})
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.then((response) => {
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if (!response.ok) {
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throw new Error('Failed to load metadata for ' + url);
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}
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return response.json();
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})
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.then((body) => {
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cb(body)
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})
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.catch(() => {
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console.warn('Can not load metadata for ' + url + ', using default value ' + defaultValue);
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cb(defaultValue)
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})
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}
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export function downloadGlyphsMetadata(urlTemplate: string, cb: (...args: any[]) => void) {
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if(!urlTemplate) return cb([])
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// Special handling because Tileserver GL serves the fontstacks metadata differently
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// https://github.com/klokantech/tileserver-gl/pull/104#issuecomment-274444087
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const urlObj = npmurl.parse(urlTemplate);
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const normPathPart = '/%7Bfontstack%7D/%7Brange%7D.pbf';
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if(urlObj.pathname === normPathPart) {
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urlObj.pathname = '/fontstacks.json';
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} else {
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urlObj.pathname = urlObj.pathname!.replace(normPathPart, '.json');
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}
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const url = npmurl.format(urlObj);
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loadJSON(url, [], cb)
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}
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export function downloadSpriteMetadata(baseUrl: string, cb: (...args: any[]) => void) {
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if(!baseUrl) return cb([])
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const url = baseUrl + '.json'
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loadJSON(url, {}, glyphs => cb(Object.keys(glyphs)))
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}
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