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joplin/ReactNativeClient/lib/urlUtils.js

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const { rtrimSlashes } = require('lib/path-utils');
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const urlUtils = {};
urlUtils.hash = function(url) {
const s = url.split('#');
if (s.length <= 1) return '';
return s[s.length - 1];
}
urlUtils.urlWithoutPath = function(url) {
const parsed = require('url').parse(url, true);
return parsed.protocol + '//' + parsed.host;
}
urlUtils.urlProtocol = function(url) {
const parsed = require('url').parse(url, true);
return parsed.protocol;
}
urlUtils.prependBaseUrl = function(url, baseUrl) {
baseUrl = rtrimSlashes(baseUrl).trim(); // All the code below assumes that the baseUrl does not end up with a slash
url = url.trim();
if (!url) url = '';
if (!baseUrl) return url;
if (urlUtils.urlProtocol(url)) return url; // Don't prepend the base URL if the URL already has a scheme
if (url.length >= 2 && url.indexOf('//') === 0) { // If it starts with // it's a protcol-relative URL
return urlUtils.urlProtocol(baseUrl) + url;
} else if (url && url[0] === '/') { // If it starts with a slash, it's an absolute URL so it should be relative to the domain (and not to the full baseUrl)
return urlUtils.urlWithoutPath(baseUrl) + url;
} else {
return baseUrl + (url ? '/' + url : '');
}
}
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module.exports = urlUtils;