597 lines
22 KiB
Java
597 lines
22 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.email;
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import com.android.email.provider.EmailContent;
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import com.android.email.provider.EmailContent.Account;
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import com.android.email.provider.EmailContent.AccountColumns;
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import com.android.email.provider.EmailContent.HostAuth;
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import com.android.email.provider.EmailContent.HostAuthColumns;
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import com.android.email.provider.EmailContent.Mailbox;
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import com.android.email.provider.EmailContent.MailboxColumns;
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import com.android.email.provider.EmailContent.Message;
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import com.android.email.provider.EmailContent.MessageColumns;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.database.Cursor;
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import android.graphics.drawable.Drawable;
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import android.os.AsyncTask;
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import android.security.MessageDigest;
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import android.telephony.TelephonyManager;
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import android.text.Editable;
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import android.text.TextUtils;
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import android.util.Base64;
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import android.util.Log;
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import android.widget.TextView;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.UnsupportedEncodingException;
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import java.nio.ByteBuffer;
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import java.nio.CharBuffer;
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import java.nio.charset.Charset;
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import java.security.NoSuchAlgorithmException;
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import java.util.Date;
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import java.util.GregorianCalendar;
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import java.util.TimeZone;
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import java.util.regex.Pattern;
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public class Utility {
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public static final Charset UTF_8 = Charset.forName("UTF-8");
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// "GMT" + "+" or "-" + 4 digits
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private static final Pattern DATE_CLEANUP_PATTERN_WRONG_TIMEZONE =
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Pattern.compile("GMT([-+]\\d{4})$");
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public final static String readInputStream(InputStream in, String encoding) throws IOException {
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InputStreamReader reader = new InputStreamReader(in, encoding);
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StringBuffer sb = new StringBuffer();
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int count;
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char[] buf = new char[512];
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while ((count = reader.read(buf)) != -1) {
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sb.append(buf, 0, count);
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}
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return sb.toString();
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}
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public final static boolean arrayContains(Object[] a, Object o) {
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for (int i = 0, count = a.length; i < count; i++) {
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if (a[i].equals(o)) {
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return true;
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}
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}
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return false;
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}
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/**
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* Combines the given array of Objects into a single string using the
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* seperator character and each Object's toString() method. between each
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* part.
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*
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* @param parts
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* @param seperator
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* @return
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*/
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public static String combine(Object[] parts, char seperator) {
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if (parts == null) {
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return null;
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}
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StringBuffer sb = new StringBuffer();
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for (int i = 0; i < parts.length; i++) {
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sb.append(parts[i].toString());
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if (i < parts.length - 1) {
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sb.append(seperator);
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}
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}
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return sb.toString();
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}
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public static String base64Decode(String encoded) {
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if (encoded == null) {
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return null;
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}
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byte[] decoded = Base64.decode(encoded, Base64.DEFAULT);
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return new String(decoded);
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}
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public static String base64Encode(String s) {
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if (s == null) {
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return s;
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}
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return Base64.encodeToString(s.getBytes(), Base64.NO_WRAP);
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}
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public static boolean requiredFieldValid(TextView view) {
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return view.getText() != null && view.getText().length() > 0;
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}
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public static boolean requiredFieldValid(Editable s) {
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return s != null && s.length() > 0;
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}
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/**
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* Ensures that the given string starts and ends with the double quote character. The string is not modified in any way except to add the
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* double quote character to start and end if it's not already there.
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*
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* TODO: Rename this, because "quoteString()" can mean so many different things.
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*
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* sample -> "sample"
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* "sample" -> "sample"
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* ""sample"" -> "sample"
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* "sample"" -> "sample"
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* sa"mp"le -> "sa"mp"le"
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* "sa"mp"le" -> "sa"mp"le"
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* (empty string) -> ""
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* " -> ""
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* @param s
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* @return
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*/
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public static String quoteString(String s) {
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if (s == null) {
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return null;
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}
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if (!s.matches("^\".*\"$")) {
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return "\"" + s + "\"";
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}
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else {
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return s;
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}
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}
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/**
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* Apply quoting rules per IMAP RFC,
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* quoted = DQUOTE *QUOTED-CHAR DQUOTE
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* QUOTED-CHAR = <any TEXT-CHAR except quoted-specials> / "\" quoted-specials
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* quoted-specials = DQUOTE / "\"
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*
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* This is used primarily for IMAP login, but might be useful elsewhere.
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*
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* NOTE: Not very efficient - you may wish to preflight this, or perhaps it should check
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* for trouble chars before calling the replace functions.
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*
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* @param s The string to be quoted.
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* @return A copy of the string, having undergone quoting as described above
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*/
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public static String imapQuoted(String s) {
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// First, quote any backslashes by replacing \ with \\
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// regex Pattern: \\ (Java string const = \\\\)
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// Substitute: \\\\ (Java string const = \\\\\\\\)
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String result = s.replaceAll("\\\\", "\\\\\\\\");
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// Then, quote any double-quotes by replacing " with \"
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// regex Pattern: " (Java string const = \")
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// Substitute: \\" (Java string const = \\\\\")
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result = result.replaceAll("\"", "\\\\\"");
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// return string with quotes around it
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return "\"" + result + "\"";
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}
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/**
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* A fast version of URLDecoder.decode() that works only with UTF-8 and does only two
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* allocations. This version is around 3x as fast as the standard one and I'm using it
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* hundreds of times in places that slow down the UI, so it helps.
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*/
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public static String fastUrlDecode(String s) {
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try {
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byte[] bytes = s.getBytes("UTF-8");
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byte ch;
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int length = 0;
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for (int i = 0, count = bytes.length; i < count; i++) {
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ch = bytes[i];
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if (ch == '%') {
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int h = (bytes[i + 1] - '0');
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int l = (bytes[i + 2] - '0');
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if (h > 9) {
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h -= 7;
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}
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if (l > 9) {
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l -= 7;
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}
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bytes[length] = (byte) ((h << 4) | l);
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i += 2;
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}
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else if (ch == '+') {
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bytes[length] = ' ';
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}
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else {
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bytes[length] = bytes[i];
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}
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length++;
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}
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return new String(bytes, 0, length, "UTF-8");
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}
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catch (UnsupportedEncodingException uee) {
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return null;
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}
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}
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/**
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* Returns true if the specified date is within today. Returns false otherwise.
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* @param date
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* @return
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*/
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public static boolean isDateToday(Date date) {
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// TODO But Calendar is so slowwwwwww....
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Date today = new Date();
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if (date.getYear() == today.getYear() &&
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date.getMonth() == today.getMonth() &&
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date.getDate() == today.getDate()) {
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return true;
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}
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return false;
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}
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/*
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* TODO disabled this method globally. It is used in all the settings screens but I just
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* noticed that an unrelated icon was dimmed. Android must share drawables internally.
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*/
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public static void setCompoundDrawablesAlpha(TextView view, int alpha) {
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// Drawable[] drawables = view.getCompoundDrawables();
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// for (Drawable drawable : drawables) {
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// if (drawable != null) {
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// drawable.setAlpha(alpha);
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// }
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// }
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}
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// TODO: unit test this
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public static String buildMailboxIdSelection(ContentResolver resolver, long mailboxId) {
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// Setup default selection & args, then add to it as necessary
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StringBuilder selection = new StringBuilder(
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MessageColumns.FLAG_LOADED + " IN ("
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+ Message.FLAG_LOADED_PARTIAL + "," + Message.FLAG_LOADED_COMPLETE
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+ ") AND ");
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if (mailboxId == Mailbox.QUERY_ALL_INBOXES
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|| mailboxId == Mailbox.QUERY_ALL_DRAFTS
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|| mailboxId == Mailbox.QUERY_ALL_OUTBOX) {
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// query for all mailboxes of type INBOX, DRAFTS, or OUTBOX
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int type;
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if (mailboxId == Mailbox.QUERY_ALL_INBOXES) {
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type = Mailbox.TYPE_INBOX;
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} else if (mailboxId == Mailbox.QUERY_ALL_DRAFTS) {
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type = Mailbox.TYPE_DRAFTS;
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} else {
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type = Mailbox.TYPE_OUTBOX;
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}
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StringBuilder inboxes = new StringBuilder();
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Cursor c = resolver.query(Mailbox.CONTENT_URI,
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EmailContent.ID_PROJECTION,
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MailboxColumns.TYPE + "=? AND " + MailboxColumns.FLAG_VISIBLE + "=1",
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new String[] { Integer.toString(type) }, null);
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// build an IN (mailboxId, ...) list
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// TODO do this directly in the provider
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while (c.moveToNext()) {
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if (inboxes.length() != 0) {
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inboxes.append(",");
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}
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inboxes.append(c.getLong(EmailContent.ID_PROJECTION_COLUMN));
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}
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c.close();
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selection.append(MessageColumns.MAILBOX_KEY + " IN ");
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selection.append("(").append(inboxes).append(")");
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} else if (mailboxId == Mailbox.QUERY_ALL_UNREAD) {
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selection.append(Message.FLAG_READ + "=0");
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} else if (mailboxId == Mailbox.QUERY_ALL_FAVORITES) {
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selection.append(Message.FLAG_FAVORITE + "=1");
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} else {
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selection.append(MessageColumns.MAILBOX_KEY + "=" + mailboxId);
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}
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return selection.toString();
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}
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public static class FolderProperties {
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private static FolderProperties sInstance;
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// Caches for frequently accessed resources.
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private String[] mSpecialMailbox = new String[] {};
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private TypedArray mSpecialMailboxDrawable;
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private Drawable mDefaultMailboxDrawable;
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private Drawable mSummaryStarredMailboxDrawable;
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private Drawable mSummaryCombinedInboxDrawable;
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private FolderProperties(Context context) {
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mSpecialMailbox = context.getResources().getStringArray(R.array.mailbox_display_names);
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for (int i = 0; i < mSpecialMailbox.length; ++i) {
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if ("".equals(mSpecialMailbox[i])) {
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// there is no localized name, so use the display name from the server
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mSpecialMailbox[i] = null;
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}
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}
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mSpecialMailboxDrawable =
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context.getResources().obtainTypedArray(R.array.mailbox_display_icons);
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mDefaultMailboxDrawable =
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context.getResources().getDrawable(R.drawable.ic_list_folder);
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mSummaryStarredMailboxDrawable =
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context.getResources().getDrawable(R.drawable.ic_list_starred);
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mSummaryCombinedInboxDrawable =
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context.getResources().getDrawable(R.drawable.ic_list_combined_inbox);
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}
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public static FolderProperties getInstance(Context context) {
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if (sInstance == null) {
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synchronized (FolderProperties.class) {
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if (sInstance == null) {
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sInstance = new FolderProperties(context);
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}
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}
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}
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return sInstance;
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}
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/**
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* Lookup names of localized special mailboxes
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* @param type
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* @return Localized strings
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*/
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public String getDisplayName(int type) {
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if (type < mSpecialMailbox.length) {
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return mSpecialMailbox[type];
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}
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return null;
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}
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/**
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* Lookup icons of special mailboxes
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* @param type
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* @return icon's drawable
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*/
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public Drawable getIconIds(int type) {
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if (type < mSpecialMailboxDrawable.length()) {
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return mSpecialMailboxDrawable.getDrawable(type);
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}
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return mDefaultMailboxDrawable;
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}
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public Drawable getSummaryMailboxIconIds(long mailboxKey) {
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if (mailboxKey == Mailbox.QUERY_ALL_INBOXES) {
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return mSummaryCombinedInboxDrawable;
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} else if (mailboxKey == Mailbox.QUERY_ALL_FAVORITES) {
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return mSummaryStarredMailboxDrawable;
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} else if (mailboxKey == Mailbox.QUERY_ALL_DRAFTS) {
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return mSpecialMailboxDrawable.getDrawable(Mailbox.TYPE_DRAFTS);
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} else if (mailboxKey == Mailbox.QUERY_ALL_OUTBOX) {
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return mSpecialMailboxDrawable.getDrawable(Mailbox.TYPE_OUTBOX);
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}
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return mDefaultMailboxDrawable;
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}
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}
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private final static String HOSTAUTH_WHERE_CREDENTIALS = HostAuthColumns.ADDRESS + " like ?"
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+ " and " + HostAuthColumns.LOGIN + " like ?"
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+ " and " + HostAuthColumns.PROTOCOL + " not like \"smtp\"";
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private final static String ACCOUNT_WHERE_HOSTAUTH = AccountColumns.HOST_AUTH_KEY_RECV + "=?";
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/**
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* Look for an existing account with the same username & server
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*
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* @param context a system context
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* @param allowAccountId this account Id will not trigger (when editing an existing account)
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* @param hostName the server
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* @param userLogin the user login string
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* @result null = no dupes found. non-null = dupe account's display name
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*/
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public static String findDuplicateAccount(Context context, long allowAccountId, String hostName,
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String userLogin) {
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ContentResolver resolver = context.getContentResolver();
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Cursor c = resolver.query(HostAuth.CONTENT_URI, HostAuth.ID_PROJECTION,
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HOSTAUTH_WHERE_CREDENTIALS, new String[] { hostName, userLogin }, null);
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try {
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while (c.moveToNext()) {
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long hostAuthId = c.getLong(HostAuth.ID_PROJECTION_COLUMN);
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// Find account with matching hostauthrecv key, and return its display name
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Cursor c2 = resolver.query(Account.CONTENT_URI, Account.ID_PROJECTION,
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ACCOUNT_WHERE_HOSTAUTH, new String[] { Long.toString(hostAuthId) }, null);
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try {
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while (c2.moveToNext()) {
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long accountId = c2.getLong(Account.ID_PROJECTION_COLUMN);
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if (accountId != allowAccountId) {
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Account account = Account.restoreAccountWithId(context, accountId);
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if (account != null) {
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return account.mDisplayName;
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}
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}
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}
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} finally {
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c2.close();
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}
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}
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} finally {
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c.close();
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}
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return null;
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}
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/**
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* Generate a random message-id header for locally-generated messages.
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*/
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public static String generateMessageId() {
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StringBuffer sb = new StringBuffer();
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sb.append("<");
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for (int i = 0; i < 24; i++) {
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sb.append(Integer.toString((int)(Math.random() * 35), 36));
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}
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sb.append(".");
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sb.append(Long.toString(System.currentTimeMillis()));
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sb.append("@email.android.com>");
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return sb.toString();
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}
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/**
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* Generate a time in milliseconds from a date string that represents a date/time in GMT
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* @param DateTime date string in format 20090211T180303Z (rfc2445, iCalendar).
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* @return the time in milliseconds (since Jan 1, 1970)
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*/
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public static long parseDateTimeToMillis(String date) {
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GregorianCalendar cal = parseDateTimeToCalendar(date);
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return cal.getTimeInMillis();
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}
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/**
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* Generate a GregorianCalendar from a date string that represents a date/time in GMT
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* @param DateTime date string in format 20090211T180303Z (rfc2445, iCalendar).
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* @return the GregorianCalendar
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*/
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public static GregorianCalendar parseDateTimeToCalendar(String date) {
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GregorianCalendar cal = new GregorianCalendar(Integer.parseInt(date.substring(0, 4)),
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Integer.parseInt(date.substring(4, 6)) - 1, Integer.parseInt(date.substring(6, 8)),
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Integer.parseInt(date.substring(9, 11)), Integer.parseInt(date.substring(11, 13)),
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Integer.parseInt(date.substring(13, 15)));
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cal.setTimeZone(TimeZone.getTimeZone("GMT"));
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return cal;
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}
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/**
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* Generate a time in milliseconds from an email date string that represents a date/time in GMT
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* @param Email style DateTime string in format 2010-02-23T16:00:00.000Z (ISO 8601, rfc3339)
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* @return the time in milliseconds (since Jan 1, 1970)
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*/
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public static long parseEmailDateTimeToMillis(String date) {
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GregorianCalendar cal = new GregorianCalendar(Integer.parseInt(date.substring(0, 4)),
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Integer.parseInt(date.substring(5, 7)) - 1, Integer.parseInt(date.substring(8, 10)),
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Integer.parseInt(date.substring(11, 13)), Integer.parseInt(date.substring(14, 16)),
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Integer.parseInt(date.substring(17, 19)));
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cal.setTimeZone(TimeZone.getTimeZone("GMT"));
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return cal.getTimeInMillis();
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}
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/** Converts a String to UTF-8 */
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public static byte[] toUtf8(String s) {
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if (s == null) {
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return null;
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}
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final ByteBuffer buffer = UTF_8.encode(CharBuffer.wrap(s));
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final byte[] bytes = new byte[buffer.limit()];
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buffer.get(bytes);
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return bytes;
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}
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/** Build a String from UTF-8 bytes */
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public static String fromUtf8(byte[] b) {
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if (b == null) {
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return null;
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}
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final CharBuffer cb = Utility.UTF_8.decode(ByteBuffer.wrap(b));
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return new String(cb.array(), 0, cb.length());
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}
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/**
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* @return true if the input is the first (or only) byte in a UTF-8 character
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*/
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public static boolean isFirstUtf8Byte(byte b) {
|
|
// If the top 2 bits is '10', it's not a first byte.
|
|
return (b & 0xc0) != 0x80;
|
|
}
|
|
|
|
public static String byteToHex(int b) {
|
|
return byteToHex(new StringBuilder(), b).toString();
|
|
}
|
|
|
|
public static StringBuilder byteToHex(StringBuilder sb, int b) {
|
|
b &= 0xFF;
|
|
sb.append("0123456789ABCDEF".charAt(b >> 4));
|
|
sb.append("0123456789ABCDEF".charAt(b & 0xF));
|
|
return sb;
|
|
}
|
|
|
|
public static String replaceBareLfWithCrlf(String str) {
|
|
return str.replace("\r", "").replace("\n", "\r\n");
|
|
}
|
|
|
|
/**
|
|
* Cancel an {@link AsyncTask}. If it's already running, it'll be interrupted.
|
|
*/
|
|
public static void cancelTaskInterrupt(AsyncTask<?, ?, ?> task) {
|
|
cancelTask(task, true);
|
|
}
|
|
|
|
/**
|
|
* Cancel an {@link AsyncTask}.
|
|
*
|
|
* @param mayInterruptIfRunning <tt>true</tt> if the thread executing this
|
|
* task should be interrupted; otherwise, in-progress tasks are allowed
|
|
* to complete.
|
|
*/
|
|
public static void cancelTask(AsyncTask<?, ?, ?> task, boolean mayInterruptIfRunning) {
|
|
if (task != null && task.getStatus() != AsyncTask.Status.FINISHED) {
|
|
task.cancel(mayInterruptIfRunning);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return Device's unique ID if available. null if the device has no unique ID.
|
|
*/
|
|
public static String getConsistentDeviceId(Context context) {
|
|
final String deviceId;
|
|
try {
|
|
TelephonyManager tm =
|
|
(TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
|
|
if (tm == null) {
|
|
return null;
|
|
}
|
|
deviceId = tm.getDeviceId();
|
|
if (deviceId == null) {
|
|
return null;
|
|
}
|
|
} catch (Exception e) {
|
|
Log.d(Email.LOG_TAG, "Error in TelephonyManager.getDeviceId(): " + e.getMessage());
|
|
return null;
|
|
}
|
|
final MessageDigest sha;
|
|
try {
|
|
sha = MessageDigest.getInstance("SHA-1");
|
|
} catch (NoSuchAlgorithmException impossible) {
|
|
return null;
|
|
}
|
|
sha.update(Utility.toUtf8(deviceId));
|
|
final int hash = getSmallHashFromSha1(sha.digest());
|
|
return Integer.toString(hash);
|
|
}
|
|
|
|
/**
|
|
* @return a non-negative integer generated from 20 byte SHA-1 hash.
|
|
*/
|
|
/* package for testing */ static int getSmallHashFromSha1(byte[] sha1) {
|
|
final int offset = sha1[19] & 0xf; // SHA1 is 20 bytes.
|
|
return ((sha1[offset] & 0x7f) << 24)
|
|
| ((sha1[offset + 1] & 0xff) << 16)
|
|
| ((sha1[offset + 2] & 0xff) << 8)
|
|
| ((sha1[offset + 3] & 0xff));
|
|
}
|
|
|
|
/**
|
|
* Try to make a date MIME(RFC 2822/5322)-compliant.
|
|
*
|
|
* It fixes:
|
|
* - "Thu, 10 Dec 09 15:08:08 GMT-0700" to "Thu, 10 Dec 09 15:08:08 -0700"
|
|
* (4 digit zone value can't be preceded by "GMT")
|
|
* We got a report saying eBay sends a date in this format
|
|
*/
|
|
public static String cleanUpMimeDate(String date) {
|
|
if (TextUtils.isEmpty(date)) {
|
|
return date;
|
|
}
|
|
date = DATE_CLEANUP_PATTERN_WRONG_TIMEZONE.matcher(date).replaceFirst("$1");
|
|
return date;
|
|
}
|
|
}
|