diff options
author | Eric Erfanian <erfanian@google.com> | 2017-03-15 14:41:07 -0700 |
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committer | Eric Erfanian <erfanian@google.com> | 2017-03-15 16:24:23 -0700 |
commit | d5e47f6da5b08b13ecdfa7f1edc7e12aeb83fab9 (patch) | |
tree | b54abbb51fb7d66e7755a1fbb5db023ff601090b /java/com/android/voicemail/impl/mail/PeekableInputStream.java | |
parent | 30436e7e6d3f2c8755a91b2b6222b74d465a9e87 (diff) |
Update Dialer source from latest green build.
* Refactor voicemail component
* Add new enriched calling components
Test: treehugger, manual aosp testing
Change-Id: I521a0f86327d4b42e14d93927c7d613044ed5942
Diffstat (limited to 'java/com/android/voicemail/impl/mail/PeekableInputStream.java')
-rw-r--r-- | java/com/android/voicemail/impl/mail/PeekableInputStream.java | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/java/com/android/voicemail/impl/mail/PeekableInputStream.java b/java/com/android/voicemail/impl/mail/PeekableInputStream.java new file mode 100644 index 000000000..08f867f82 --- /dev/null +++ b/java/com/android/voicemail/impl/mail/PeekableInputStream.java @@ -0,0 +1,81 @@ +/* + * Copyright (C) 2015 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.android.voicemail.impl.mail; + +import java.io.IOException; +import java.io.InputStream; + +/** + * A filtering InputStream that allows single byte "peeks" without consuming the byte. The client of + * this stream can call peek() to see the next available byte in the stream and a subsequent read + * will still return the peeked byte. + */ +public class PeekableInputStream extends InputStream { + private final InputStream mIn; + private boolean mPeeked; + private int mPeekedByte; + + public PeekableInputStream(InputStream in) { + this.mIn = in; + } + + @Override + public int read() throws IOException { + if (!mPeeked) { + return mIn.read(); + } else { + mPeeked = false; + return mPeekedByte; + } + } + + public int peek() throws IOException { + if (!mPeeked) { + mPeekedByte = read(); + mPeeked = true; + } + return mPeekedByte; + } + + @Override + public int read(byte[] b, int offset, int length) throws IOException { + if (!mPeeked) { + return mIn.read(b, offset, length); + } else { + b[0] = (byte) mPeekedByte; + mPeeked = false; + int r = mIn.read(b, offset + 1, length - 1); + if (r == -1) { + return 1; + } else { + return r + 1; + } + } + } + + @Override + public int read(byte[] b) throws IOException { + return read(b, 0, b.length); + } + + @Override + public String toString() { + return String.format( + "PeekableInputStream(in=%s, peeked=%b, peekedByte=%d)", + mIn.toString(), mPeeked, mPeekedByte); + } +} |