ImapMemoryLiteral.java revision ee6d0d47f58ac8d010cbc68014e6786da696e726 
1/*
2 * Copyright (C) 2010 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
17package com.android.email.mail.store.imap;
18
19import com.android.email.Email;
20import com.android.email.FixedLengthInputStream;
21import com.android.email.Utility;
22
23import android.util.Log;
24
25import java.io.ByteArrayInputStream;
26import java.io.IOException;
27import java.io.InputStream;
28
29/**
30 * Subclass of {@link ImapString} used for literals backed by an in-memory byte array.
31 */
32public class ImapMemoryLiteral extends ImapString {
33    private byte[] mData;
34
35    /* package */ ImapMemoryLiteral(FixedLengthInputStream in) throws IOException {
36        // We could use ByteArrayOutputStream and IOUtils.copy, but it'd perform an unnecessary
37        // copy....
38        mData = new byte[in.getLength()];
39        int pos = 0;
40        while (pos < mData.length) {
41            int read = in.read(mData, pos, mData.length - pos);
42            if (read < 0) {
43                break;
44            }
45            pos += read;
46        }
47        if (pos != mData.length) {
48            Log.w(Email.LOG_TAG, "");
49        }
50    }
51
52    @Override
53    public void destroy() {
54        mData = null;
55        super.destroy();
56    }
57
58    @Override
59    public String getString() {
60        return Utility.fromAscii(mData);
61    }
62
63    @Override
64    public InputStream getAsStream() {
65        return new ByteArrayInputStream(mData);
66    }
67
68    @Override
69    public String toString() {
70        return String.format("{%d byte literal(memory)}", mData.length);
71    }
72}
73