The Tor Browser / file comparison
comparison: mobile/android/base/sync/setup/activities/WebURLFinder.java
mobile/android/base/sync/setup/activities/WebURLFinder.java
- branch
- TOR_BUG_3246
- changeset 4
- fc2d59ddac77
equal
deleted
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replaced
| -1:000000000000 | 0:4202e47b7d43 |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 package org.mozilla.gecko.sync.setup.activities; | |
| 6 | |
| 7 import java.net.URI; | |
| 8 import java.net.URISyntaxException; | |
| 9 import java.util.ArrayList; | |
| 10 import java.util.Collection; | |
| 11 import java.util.LinkedList; | |
| 12 import java.util.List; | |
| 13 import java.util.regex.Matcher; | |
| 14 | |
| 15 import android.util.Patterns; | |
| 16 | |
| 17 public class WebURLFinder { | |
| 18 public final List<String> candidates; | |
| 19 | |
| 20 public WebURLFinder(String string) { | |
| 21 if (string == null) { | |
| 22 throw new IllegalArgumentException("string must not be null"); | |
| 23 } | |
| 24 | |
| 25 this.candidates = candidateWebURLs(string); | |
| 26 } | |
| 27 | |
| 28 public WebURLFinder(List<String> strings) { | |
| 29 if (strings == null) { | |
| 30 throw new IllegalArgumentException("strings must not be null"); | |
| 31 } | |
| 32 | |
| 33 this.candidates = candidateWebURLs(strings); | |
| 34 } | |
| 35 | |
| 36 /** | |
| 37 * Check if string is a Web URL. | |
| 38 * <p> | |
| 39 * A Web URL is a URI that is not a <code>file:</code> or | |
| 40 * <code>javascript:</code> scheme. | |
| 41 * | |
| 42 * @param string | |
| 43 * to check. | |
| 44 * @return <code>true</code> if <code>string</code> is a Web URL. | |
| 45 */ | |
| 46 public static boolean isWebURL(String string) { | |
| 47 try { | |
| 48 new URI(string); | |
| 49 } catch (Exception e) { | |
| 50 return false; | |
| 51 } | |
| 52 | |
| 53 if (android.webkit.URLUtil.isFileUrl(string) || | |
| 54 android.webkit.URLUtil.isJavaScriptUrl(string)) { | |
| 55 return false; | |
| 56 } | |
| 57 | |
| 58 return true; | |
| 59 } | |
| 60 | |
| 61 /** | |
| 62 * Return best Web URL. | |
| 63 * <p> | |
| 64 * "Best" means a Web URL with a scheme, and failing that, a Web URL without a | |
| 65 * scheme. | |
| 66 * | |
| 67 * @return a Web URL or <code>null</code>. | |
| 68 */ | |
| 69 public String bestWebURL() { | |
| 70 String firstWebURLWithScheme = firstWebURLWithScheme(); | |
| 71 if (firstWebURLWithScheme != null) { | |
| 72 return firstWebURLWithScheme; | |
| 73 } | |
| 74 | |
| 75 return firstWebURLWithoutScheme(); | |
| 76 } | |
| 77 | |
| 78 protected static List<String> candidateWebURLs(Collection<String> strings) { | |
| 79 List<String> candidates = new ArrayList<String>(); | |
| 80 | |
| 81 for (String string : strings) { | |
| 82 if (string == null) { | |
| 83 continue; | |
| 84 } | |
| 85 | |
| 86 candidates.addAll(candidateWebURLs(string)); | |
| 87 } | |
| 88 | |
| 89 return candidates; | |
| 90 } | |
| 91 | |
| 92 protected static List<String> candidateWebURLs(String string) { | |
| 93 Matcher matcher = Patterns.WEB_URL.matcher(string); | |
| 94 List<String> matches = new LinkedList<String>(); | |
| 95 | |
| 96 while (matcher.find()) { | |
| 97 // Remove URLs with bad schemes. | |
| 98 if (!isWebURL(matcher.group())) { | |
| 99 continue; | |
| 100 } | |
| 101 | |
| 102 // Remove parts of email addresses. | |
| 103 if (matcher.start() > 0 && (string.charAt(matcher.start() - 1) == '@')) { | |
| 104 continue; | |
| 105 } | |
| 106 | |
| 107 matches.add(matcher.group()); | |
| 108 } | |
| 109 | |
| 110 return matches; | |
| 111 } | |
| 112 | |
| 113 protected String firstWebURLWithScheme() { | |
| 114 for (String match : candidates) { | |
| 115 try { | |
| 116 if (new URI(match).getScheme() != null) { | |
| 117 return match; | |
| 118 } | |
| 119 } catch (URISyntaxException e) { | |
| 120 // Ignore: on to the next. | |
| 121 continue; | |
| 122 } | |
| 123 } | |
| 124 | |
| 125 return null; | |
| 126 } | |
| 127 | |
| 128 protected String firstWebURLWithoutScheme() { | |
| 129 if (!candidates.isEmpty()) { | |
| 130 return candidates.get(0); | |
| 131 } | |
| 132 | |
| 133 return null; | |
| 134 } | |
| 135 } |
