79 lines
2.5 KiB
Java
79 lines
2.5 KiB
Java
|
/*
|
||
|
* Twidere - Twitter client for Android
|
||
|
*
|
||
|
* Copyright (C) 2012-2015 Mariotaku Lee <mariotaku.lee@gmail.com>
|
||
|
*
|
||
|
* This program is free software: you can redistribute it and/or modify
|
||
|
* it under the terms of the GNU General Public License as published by
|
||
|
* the Free Software Foundation, either version 3 of the License, or
|
||
|
* (at your option) any later version.
|
||
|
*
|
||
|
* This program is distributed in the hope that it will be useful,
|
||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
* GNU General Public License for more details.
|
||
|
*
|
||
|
* You should have received a copy of the GNU General Public License
|
||
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
*/
|
||
|
|
||
|
package org.mariotaku.twidere.api.twitter.util;
|
||
|
|
||
|
import java.io.BufferedReader;
|
||
|
import java.io.IOException;
|
||
|
import java.io.Reader;
|
||
|
|
||
|
/**
|
||
|
* CRLFLineReader implements a readLine() method that requires
|
||
|
* exactly CRLF to terminate an input line.
|
||
|
* This is required for IMAP, which allows bare CR and LF.
|
||
|
*
|
||
|
* @since 3.0
|
||
|
*/
|
||
|
public final class CRLFLineReader extends BufferedReader
|
||
|
{
|
||
|
private static final char LF = '\n';
|
||
|
private static final char CR = '\r';
|
||
|
|
||
|
/**
|
||
|
* Creates a CRLFLineReader that wraps an existing Reader
|
||
|
* input source.
|
||
|
* @param reader The Reader input source.
|
||
|
*/
|
||
|
public CRLFLineReader(Reader reader)
|
||
|
{
|
||
|
super(reader);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Read a line of text.
|
||
|
* A line is considered to be terminated by carriage return followed immediately by a linefeed.
|
||
|
* This contrasts with BufferedReader which also allows other combinations.
|
||
|
* @since 3.0
|
||
|
*/
|
||
|
@Override
|
||
|
public String readLine() throws IOException {
|
||
|
StringBuilder sb = new StringBuilder();
|
||
|
int intch;
|
||
|
boolean prevWasCR = false;
|
||
|
synchronized(lock) { // make thread-safe (hopefully!)
|
||
|
while((intch = read()) != -1)
|
||
|
{
|
||
|
if (prevWasCR && intch == LF) {
|
||
|
return sb.substring(0, sb.length()-1);
|
||
|
}
|
||
|
if (intch == CR) {
|
||
|
prevWasCR = true;
|
||
|
} else {
|
||
|
prevWasCR = false;
|
||
|
}
|
||
|
sb.append((char) intch);
|
||
|
}
|
||
|
}
|
||
|
String string = sb.toString();
|
||
|
if (string.length() == 0) { // immediate EOF
|
||
|
return null;
|
||
|
}
|
||
|
return string;
|
||
|
}
|
||
|
}
|