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.voicemail.impl.mail.store.imap;
18
19import com.android.voicemail.impl.VvmLog;
20import com.android.voicemail.impl.mail.FixedLengthInputStream;
21import java.io.ByteArrayInputStream;
22import java.io.IOException;
23import java.io.InputStream;
24import java.io.UnsupportedEncodingException;
25
26/** Subclass of {@link ImapString} used for literals backed by an in-memory byte array. */
27public class ImapMemoryLiteral extends ImapString {
28  private final String TAG = "ImapMemoryLiteral";
29  private byte[] mData;
30
31  /* package */ ImapMemoryLiteral(FixedLengthInputStream in) throws IOException {
32    // We could use ByteArrayOutputStream and IOUtils.copy, but it'd perform an unnecessary
33    // copy....
34    mData = new byte[in.getLength()];
35    int pos = 0;
36    while (pos < mData.length) {
37      int read = in.read(mData, pos, mData.length - pos);
38      if (read < 0) {
39        break;
40      }
41      pos += read;
42    }
43    if (pos != mData.length) {
44      VvmLog.w(TAG, "length mismatch");
45    }
46  }
47
48  @Override
49  public void destroy() {
50    mData = null;
51    super.destroy();
52  }
53
54  @Override
55  public String getString() {
56    try {
57      return new String(mData, "US-ASCII");
58    } catch (UnsupportedEncodingException e) {
59      VvmLog.e(TAG, "Unsupported encoding: ", e);
60    }
61    return null;
62  }
63
64  @Override
65  public InputStream getAsStream() {
66    return new ByteArrayInputStream(mData);
67  }
68
69  @Override
70  public String toString() {
71    return String.format("{%d byte literal(memory)}", mData.length);
72  }
73}
74