--- /dev/null
+/*
+ * Copyright (C) 2011 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 android.support.v2.util;
+
+import android.util.Log;
+
+import java.io.Writer;
+
+/**
+ * Useful logging utility that is not available on all versions of Android.
+ */
+public class LogWriter extends Writer {
+ private final String mTag;
+ private StringBuilder mBuilder = new StringBuilder(128);
+
+ /**
+ * Create a new Writer that sends to the log with the given priority
+ * and tag.
+ *
+ * @param priority The desired log priority:
+ * {@link android.util.Log#VERBOSE Log.VERBOSE},
+ * {@link android.util.Log#DEBUG Log.DEBUG},
+ * {@link android.util.Log#INFO Log.INFO},
+ * {@link android.util.Log#WARN Log.WARN}, or
+ * {@link android.util.Log#ERROR Log.ERROR}.
+ * @param tag A string tag to associate with each printed log statement.
+ */
+ public LogWriter(String tag) {
+ mTag = tag;
+ }
+
+ @Override public void close() {
+ flushBuilder();
+ }
+
+ @Override public void flush() {
+ flushBuilder();
+ }
+
+ @Override public void write(char[] buf, int offset, int count) {
+ for(int i = 0; i < count; i++) {
+ char c = buf[offset + i];
+ if ( c == '\n') {
+ flushBuilder();
+ }
+ else {
+ mBuilder.append(c);
+ }
+ }
+ }
+
+ private void flushBuilder() {
+ if (mBuilder.length() > 0) {
+ Log.d(mTag, mBuilder.toString());
+ mBuilder.delete(0, mBuilder.length());
+ }
+ }
+}