replicant-packages_apps_Email/src/com/android/email/mail/transport/LoggingInputStream.java

89 lines
2.4 KiB
Java

/*
* Copyright (C) 2008 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.email.mail.transport;
import com.android.email.Email;
import android.util.Log;
import java.io.IOException;
import java.io.InputStream;
/**
* Simple class used for debugging only that affords us a view of the raw IMAP or POP3 stream,
* in addition to the tokenized version.
*
* Use of this class *MUST* be restricted to logging-enabled situations only.
*/
public class LoggingInputStream extends InputStream {
InputStream mIn;
StringBuilder mSb;
boolean mBufferDirty;
private final String LINE_TAG = "RAW ";
public LoggingInputStream(InputStream in) {
super();
mIn = in;
mSb = new StringBuilder(LINE_TAG);
mBufferDirty = false;
}
/**
* Collect chars as read, and log them when EOL reached.
*/
@Override
public int read() throws IOException {
int oneByte = mIn.read();
logRaw(oneByte);
return oneByte;
}
/**
* Collect chars as read, and log them when EOL reached.
*/
@Override
public int read(byte[] b, int offset, int length) throws IOException {
int bytesRead = mIn.read(b, offset, length);
int copyBytes = bytesRead;
while (copyBytes > 0) {
logRaw((char)b[offset]);
copyBytes--;
offset++;
}
return bytesRead;
}
/**
* Write and clear the buffer
*/
private void logRaw(int oneByte) {
if (oneByte == '\r' || oneByte == '\n') {
if (mBufferDirty) {
Log.d(Email.LOG_TAG, mSb.toString());
mSb = new StringBuilder(LINE_TAG);
mBufferDirty = false;
}
} else {
mSb.append((char)oneByte);
mBufferDirty = true;
}
}
}