Wenyi Wang | 13e6b2e | 2015-12-02 16:48:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 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.compat; |
| 18 | |
| 19 | import android.content.ContentResolver; |
| 20 | import android.content.Context; |
| 21 | import android.database.Cursor; |
| 22 | import android.net.Uri; |
| 23 | import android.os.Build; |
| 24 | import android.provider.BaseColumns; |
| 25 | import android.provider.Telephony; |
| 26 | import android.text.TextUtils; |
| 27 | import android.util.Log; |
| 28 | import android.util.Patterns; |
| 29 | |
| 30 | import java.util.HashSet; |
| 31 | import java.util.Set; |
| 32 | import java.util.regex.Matcher; |
| 33 | import java.util.regex.Pattern; |
| 34 | |
| 35 | /** |
| 36 | * This class contains static utility methods and variables extracted from Telephony and |
| 37 | * SqliteWrapper, and the methods were made visible in API level 23. In this way, we could |
| 38 | * enable the corresponding functionality for pre-M devices. We need maintain this class and keep |
| 39 | * it synced with Telephony and SqliteWrapper. |
| 40 | */ |
| 41 | public class TelephonyThreadsCompat { |
| 42 | /** |
| 43 | * Not instantiable. |
| 44 | */ |
| 45 | private TelephonyThreadsCompat() {} |
| 46 | |
| 47 | private static final String TAG = "TelephonyThreadsCompat"; |
| 48 | |
| 49 | public static long getOrCreateThreadId(Context context, String recipient) { |
| 50 | if (SdkVersionOverride.getSdkVersion(Build.VERSION_CODES.M) >= Build.VERSION_CODES.M) { |
| 51 | return Telephony.Threads.getOrCreateThreadId(context, recipient); |
| 52 | } else { |
| 53 | return getOrCreateThreadIdInternal(context, recipient); |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | // Below is code copied from Telephony and SqliteWrapper |
| 58 | /** |
| 59 | * Private {@code content://} style URL for this table. Used by |
| 60 | * {@link #getOrCreateThreadId(Context, Set)}. |
| 61 | */ |
| 62 | private static final Uri THREAD_ID_CONTENT_URI = Uri.parse("content://mms-sms/threadID"); |
| 63 | |
| 64 | private static final String[] ID_PROJECTION = { BaseColumns._ID }; |
| 65 | |
| 66 | /** |
| 67 | * Regex pattern for names and email addresses. |
| 68 | * <ul> |
| 69 | * <li><em>mailbox</em> = {@code name-addr}</li> |
| 70 | * <li><em>name-addr</em> = {@code [display-name] angle-addr}</li> |
| 71 | * <li><em>angle-addr</em> = {@code [CFWS] "<" addr-spec ">" [CFWS]}</li> |
| 72 | * </ul> |
| 73 | */ |
| 74 | private static final Pattern NAME_ADDR_EMAIL_PATTERN = |
| 75 | Pattern.compile("\\s*(\"[^\"]*\"|[^<>\"]+)\\s*<([^<>]+)>\\s*"); |
| 76 | |
| 77 | /** |
| 78 | * Copied from {@link Telephony.Threads#getOrCreateThreadId(Context, String)} |
| 79 | */ |
| 80 | private static long getOrCreateThreadIdInternal(Context context, String recipient) { |
| 81 | Set<String> recipients = new HashSet<String>(); |
| 82 | |
| 83 | recipients.add(recipient); |
| 84 | return getOrCreateThreadIdInternal(context, recipients); |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * Given the recipients list and subject of an unsaved message, |
| 89 | * return its thread ID. If the message starts a new thread, |
| 90 | * allocate a new thread ID. Otherwise, use the appropriate |
| 91 | * existing thread ID. |
| 92 | * |
| 93 | * <p>Find the thread ID of the same set of recipients (in any order, |
| 94 | * without any additions). If one is found, return it. Otherwise, |
| 95 | * return a unique thread ID.</p> |
| 96 | */ |
| 97 | private static long getOrCreateThreadIdInternal(Context context, Set<String> recipients) { |
| 98 | Uri.Builder uriBuilder = THREAD_ID_CONTENT_URI.buildUpon(); |
| 99 | |
| 100 | for (String recipient : recipients) { |
| 101 | if (isEmailAddress(recipient)) { |
| 102 | recipient = extractAddrSpec(recipient); |
| 103 | } |
| 104 | |
| 105 | uriBuilder.appendQueryParameter("recipient", recipient); |
| 106 | } |
| 107 | |
| 108 | Uri uri = uriBuilder.build(); |
| 109 | |
| 110 | Cursor cursor = query( |
| 111 | context.getContentResolver(), uri, ID_PROJECTION, null, null, null); |
| 112 | if (cursor != null) { |
| 113 | try { |
| 114 | if (cursor.moveToFirst()) { |
| 115 | return cursor.getLong(0); |
| 116 | } else { |
| 117 | Log.e(TAG, "getOrCreateThreadId returned no rows!"); |
| 118 | } |
| 119 | } finally { |
| 120 | cursor.close(); |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | Log.e(TAG, "getOrCreateThreadId failed with uri " + uri.toString()); |
| 125 | throw new IllegalArgumentException("Unable to find or allocate a thread ID."); |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Copied from {@link SqliteWrapper#query} |
| 130 | */ |
| 131 | private static Cursor query(ContentResolver resolver, Uri uri, String[] projection, |
| 132 | String selection, String[] selectionArgs, String sortOrder) { |
| 133 | try { |
| 134 | return resolver.query(uri, projection, selection, selectionArgs, sortOrder); |
| 135 | } catch (Exception e) { |
| 136 | Log.e(TAG, "Catch an exception when query: ", e); |
| 137 | return null; |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * Is the specified address an email address? |
| 143 | * |
| 144 | * @param address the input address to test |
| 145 | * @return true if address is an email address; false otherwise. |
| 146 | */ |
| 147 | private static boolean isEmailAddress(String address) { |
| 148 | if (TextUtils.isEmpty(address)) { |
| 149 | return false; |
| 150 | } |
| 151 | |
| 152 | String s = extractAddrSpec(address); |
| 153 | Matcher match = Patterns.EMAIL_ADDRESS.matcher(s); |
| 154 | return match.matches(); |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * Helper method to extract email address from address string. |
| 159 | */ |
| 160 | private static String extractAddrSpec(String address) { |
| 161 | Matcher match = NAME_ADDR_EMAIL_PATTERN.matcher(address); |
| 162 | |
| 163 | if (match.matches()) { |
| 164 | return match.group(2); |
| 165 | } |
| 166 | return address; |
| 167 | } |
| 168 | } |