package org.example.client;
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import java.net.URI;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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public class Url {
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/**
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* Expected format: "[id:password@]host[:port]"
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*/
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private static Pattern PATTERN_AUTHORITY = Pattern.compile("^(.*@)?([^:]+)(:\\d+)?$");
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private Url() {}
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static class ParsedURI {
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public final URI uri;
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public final String id;
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public ParsedURI(URI uri, String id) {
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this.uri = uri;
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this.id = id;
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}
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}
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public static ParsedURI parse(URI uri) {
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String protocol = uri.getScheme();
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if (protocol == null || !protocol.matches("^https?|wss?$")) {
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protocol = "https";
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}
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int port = uri.getPort();
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if (port == -1) {
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if ("http".equals(protocol) || "ws".equals(protocol)) {
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port = 80;
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} else if ("https".equals(protocol) || "wss".equals(protocol)) {
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port = 443;
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}
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}
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String path = uri.getRawPath();
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if (path == null || path.length() == 0) {
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path = "/";
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}
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String userInfo = uri.getRawUserInfo();
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String query = uri.getRawQuery();
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String fragment = uri.getRawFragment();
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String _host = uri.getHost();
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if (_host == null) {
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// might happen on some of Samsung Devices such as S4.
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_host = extractHostFromAuthorityPart(uri.getRawAuthority());
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}
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URI completeUri = URI.create(protocol + "://"
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+ (userInfo != null ? userInfo + "@" : "")
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+ _host
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+ (port != -1 ? ":" + port : "")
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+ path
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+ (query != null ? "?" + query : "")
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+ (fragment != null ? "#" + fragment : ""));
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String id = protocol + "://" + _host + ":" + port;
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return new ParsedURI(completeUri, id);
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}
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private static String extractHostFromAuthorityPart(String authority)
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{
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if (authority == null) {
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throw new RuntimeException("unable to parse the host from the authority");
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}
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Matcher matcher = PATTERN_AUTHORITY.matcher(authority);
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// If the authority part does not match the expected format.
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if (!matcher.matches()) {
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throw new RuntimeException("unable to parse the host from the authority");
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}
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// Return the host part.
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return matcher.group(2);
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}
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}
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