Update #0 - First Release

sources/main/java/com/google/common/io/LineProcessor.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2009 The Guava Authors
+ *
+ * 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.google.common.io;
+
+import java.io.IOException;
+
+import com.google.common.annotations.Beta;
+
+/**
+ * A callback to be used with the streaming {@code readLines} methods.
+ *
+ * <p>
+ * {@link #processLine} will be called for each line that is read, and should
+ * return {@code false} when you want to stop processing.
+ *
+ * @author Miles Barr
+ * @since 1.0
+ */
+@Beta
+public interface LineProcessor<T> {
+
+	/**
+	 * This method will be called once for each line.
+	 *
+	 * @param line the line read from the input, without delimiter
+	 * @return true to continue processing, false to stop
+	 */
+	boolean processLine(String line) throws IOException;
+
+	/** Return the result of processing all the lines. */
+	T getResult();
+}