Chiao Cheng | 8661800 | 2012-10-16 13:21:10 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.contacts.common.util; |
| 18 | |
| 19 | import android.net.Uri; |
Makoto Onuki | a65f2ad | 2015-03-10 12:54:34 -0700 | [diff] [blame] | 20 | import android.provider.ContactsContract; |
Chiao Cheng | 8661800 | 2012-10-16 13:21:10 -0700 | [diff] [blame] | 21 | |
Tyler Gunn | 9e0c14e | 2015-08-04 13:33:49 -0700 | [diff] [blame] | 22 | import java.util.List; |
| 23 | |
Chiao Cheng | 8661800 | 2012-10-16 13:21:10 -0700 | [diff] [blame] | 24 | /** |
| 25 | * Utility methods for dealing with URIs. |
| 26 | */ |
| 27 | public class UriUtils { |
| 28 | /** Static helper, not instantiable. */ |
| 29 | private UriUtils() {} |
| 30 | |
| 31 | /** Checks whether two URI are equal, taking care of the case where either is null. */ |
| 32 | public static boolean areEqual(Uri uri1, Uri uri2) { |
| 33 | if (uri1 == null && uri2 == null) { |
| 34 | return true; |
| 35 | } |
| 36 | if (uri1 == null || uri2 == null) { |
| 37 | return false; |
| 38 | } |
| 39 | return uri1.equals(uri2); |
| 40 | } |
| 41 | |
| 42 | /** Parses a string into a URI and returns null if the given string is null. */ |
| 43 | public static Uri parseUriOrNull(String uriString) { |
| 44 | if (uriString == null) { |
| 45 | return null; |
| 46 | } |
| 47 | return Uri.parse(uriString); |
| 48 | } |
| 49 | |
| 50 | /** Converts a URI into a string, returns null if the given URI is null. */ |
| 51 | public static String uriToString(Uri uri) { |
| 52 | return uri == null ? null : uri.toString(); |
| 53 | } |
Yorke Lee | 9c85bc3 | 2013-09-09 14:42:46 -0700 | [diff] [blame] | 54 | |
| 55 | public static boolean isEncodedContactUri(Uri uri) { |
Jay Shrauner | 949d3fb | 2014-07-02 09:48:31 -0700 | [diff] [blame] | 56 | if (uri == null) { |
| 57 | return false; |
| 58 | } |
| 59 | final String lastPathSegment = uri.getLastPathSegment(); |
| 60 | if (lastPathSegment == null) { |
| 61 | return false; |
| 62 | } |
| 63 | return lastPathSegment.equals(Constants.LOOKUP_URI_ENCODED); |
Yorke Lee | 9c85bc3 | 2013-09-09 14:42:46 -0700 | [diff] [blame] | 64 | } |
Makoto Onuki | a65f2ad | 2015-03-10 12:54:34 -0700 | [diff] [blame] | 65 | |
| 66 | /** |
| 67 | * @return {@code uri} as-is if the authority is of contacts provider. Otherwise |
| 68 | * or {@code uri} is null, return null otherwise |
| 69 | */ |
| 70 | public static Uri nullForNonContactsUri(Uri uri) { |
| 71 | if (uri == null) { |
| 72 | return null; |
| 73 | } |
| 74 | return ContactsContract.AUTHORITY.equals(uri.getAuthority()) ? uri : null; |
| 75 | } |
Tyler Gunn | 9e0c14e | 2015-08-04 13:33:49 -0700 | [diff] [blame] | 76 | |
| 77 | /** |
| 78 | * Parses the given URI to determine the original lookup key of the contact. |
| 79 | */ |
| 80 | public static String getLookupKeyFromUri(Uri lookupUri) { |
| 81 | // Would be nice to be able to persist the lookup key somehow to avoid having to parse |
| 82 | // the uri entirely just to retrieve the lookup key, but every uri is already parsed |
| 83 | // once anyway to check if it is an encoded JSON uri, so this has negligible effect |
| 84 | // on performance. |
| 85 | if (lookupUri != null && !UriUtils.isEncodedContactUri(lookupUri)) { |
| 86 | final List<String> segments = lookupUri.getPathSegments(); |
| 87 | // This returns the third path segment of the uri, where the lookup key is located. |
| 88 | // See {@link android.provider.ContactsContract.Contacts#CONTENT_LOOKUP_URI}. |
| 89 | return (segments.size() < 3) ? null : Uri.encode(segments.get(2)); |
| 90 | } else { |
| 91 | return null; |
| 92 | } |
| 93 | } |
Chiao Cheng | 8661800 | 2012-10-16 13:21:10 -0700 | [diff] [blame] | 94 | } |