| /* |
| * Copyright 2000-2013 JetBrains s.r.o. |
| * |
| * 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.intellij.util.io; |
| |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.io.IOException; |
| import java.io.Reader; |
| |
| /** |
| * @author traff |
| */ |
| public abstract class BaseOutputReader extends BaseDataReader { |
| |
| protected final Reader myReader; |
| |
| private final char[] myBuffer = new char[8192]; |
| private final StringBuilder myTextBuffer = new StringBuilder(); |
| private boolean skipLF = false; |
| |
| public BaseOutputReader(@NotNull Reader reader) { |
| this(reader, null); |
| } |
| |
| public BaseOutputReader(@NotNull Reader reader, SleepingPolicy sleepingPolicy) { |
| super(sleepingPolicy); |
| myReader = reader; |
| } |
| |
| /** |
| * Reads as much data as possible without blocking. |
| * @return true if non-zero amount of data has been read |
| * @exception IOException If an I/O error occurs |
| */ |
| protected final boolean readAvailable() throws IOException { |
| char[] buffer = myBuffer; |
| StringBuilder token = myTextBuffer; |
| token.setLength(0); |
| |
| boolean read = false; |
| while (myReader.ready()) { |
| int n = myReader.read(buffer); |
| if (n <= 0) break; |
| read = true; |
| |
| for (int i = 0; i < n; i++) { |
| char c = buffer[i]; |
| if (skipLF && c != '\n') { |
| token.append('\r'); |
| } |
| |
| if (c == '\r') { |
| skipLF = true; |
| } |
| else { |
| skipLF = false; |
| token.append(c); |
| } |
| |
| if (c == '\n') { |
| onTextAvailable(token.toString()); |
| token.setLength(0); |
| } |
| } |
| } |
| |
| if (token.length() != 0) { |
| onTextAvailable(token.toString()); |
| token.setLength(0); |
| } |
| return read; |
| } |
| |
| @Override |
| protected void close() throws IOException { |
| myReader.close(); |
| } |
| |
| protected abstract void onTextAvailable(@NotNull String text); |
| } |