diff options
Diffstat (limited to 'OpenPGP-Keychain/src/org/sufficientlysecure/keychain/util/PositionAwareInputStream.java')
-rw-r--r-- | OpenPGP-Keychain/src/org/sufficientlysecure/keychain/util/PositionAwareInputStream.java | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/OpenPGP-Keychain/src/org/sufficientlysecure/keychain/util/PositionAwareInputStream.java b/OpenPGP-Keychain/src/org/sufficientlysecure/keychain/util/PositionAwareInputStream.java new file mode 100644 index 000000000..a783d7820 --- /dev/null +++ b/OpenPGP-Keychain/src/org/sufficientlysecure/keychain/util/PositionAwareInputStream.java @@ -0,0 +1,81 @@ +/* + * 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 org.sufficientlysecure.keychain.util; + +import java.io.IOException; +import java.io.InputStream; + +public class PositionAwareInputStream extends InputStream { + private InputStream mStream; + private long mPosition; + + public PositionAwareInputStream(InputStream in) { + mStream = in; + mPosition = 0; + } + + @Override + public int read() throws IOException { + int ch = mStream.read(); + ++mPosition; + return ch; + } + + @Override + public int available() throws IOException { + return mStream.available(); + } + + @Override + public void close() throws IOException { + mStream.close(); + } + + @Override + public boolean markSupported() { + return false; + } + + @Override + public int read(byte[] b) throws IOException { + int result = mStream.read(b); + mPosition += result; + return result; + } + + @Override + public int read(byte[] b, int offset, int length) throws IOException { + int result = mStream.read(b, offset, length); + mPosition += result; + return result; + } + + @Override + public synchronized void reset() throws IOException { + mStream.reset(); + mPosition = 0; + } + + @Override + public long skip(long n) throws IOException { + long result = mStream.skip(n); + mPosition += result; + return result; + } + + public long position() { + return mPosition; + } +} |