Author: doogie
Date: Tue Nov 30 22:03:40 2010
New Revision: 1040798
URL: http://svn.apache.org/viewvc?rev=1040798&view=rev
Log:
Several utility methods for copying streams and
readers/writers/appendable.
Modified:
ofbiz/trunk/framework/base/src/org/ofbiz/base/util/UtilIO.java
Modified: ofbiz/trunk/framework/base/src/org/ofbiz/base/util/UtilIO.java
URL:
http://svn.apache.org/viewvc/ofbiz/trunk/framework/base/src/org/ofbiz/base/util/UtilIO.java?rev=1040798&r1=1040797&r2=1040798&view=diff
==============================================================================
--- ofbiz/trunk/framework/base/src/org/ofbiz/base/util/UtilIO.java (original)
+++ ofbiz/trunk/framework/base/src/org/ofbiz/base/util/UtilIO.java Tue Nov 30
22:03:40 2010
@@ -38,6 +38,7 @@ import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;
import java.nio.ByteBuffer;
+import java.nio.CharBuffer;
import java.nio.charset.Charset;
import org.apache.commons.io.IOUtils;
@@ -52,6 +53,69 @@ public final class UtilIO {
public static final Charset UTF8 = Charset.forName("UTF-8");
public static final String module = UtilIO.class.getName();
+ /** Copy an InputStream to an OutputStream, optionally closing either
+ * the input or the output.
+ *
+ * @param in the InputStream to copy from
+ * @param closeIn whether to close the input when the copy is done
+ * @param out the OutputStream to copy to
+ * @param closeOut whether to close the output when the copy is done
+ * @throws IOException if an error occurs
+ */
+ public static void copy(InputStream in, boolean closeIn, OutputStream out,
boolean closeOut) throws IOException {
+ try {
+ try {
+ IOUtils.copy(in, out);
+ } finally {
+ if (closeIn) IOUtils.closeQuietly(in);
+ }
+ } finally {
+ if (closeOut) IOUtils.closeQuietly(out);
+ }
+ }
+
+ /** Copy a Reader to a Writer, optionally closing either the input or
+ * the output.
+ *
+ * @param reader the Reader to copy from
+ * @param closeIn whether to close the input when the copy is done
+ * @param writer the Writer to copy to
+ * @param closeOut whether to close the output when the copy is done
+ * @throws IOException if an error occurs
+ */
+ public static void copy(Reader reader, boolean closeIn, Writer writer,
boolean closeOut) throws IOException {
+ try {
+ try {
+ IOUtils.copy(reader, writer);
+ } finally {
+ if (closeIn) IOUtils.closeQuietly(reader);
+ }
+ } finally {
+ if (closeOut) IOUtils.closeQuietly(writer);
+ }
+ }
+
+ /** Copy a Reader to an Appendable, optionally closing the input.
+ *
+ * @param reader the Reader to copy from
+ * @param closeIn whether to close the input when the copy is done
+ * @param out the Appendable to copy to
+ * @throws IOException if an error occurs
+ */
+ public static void copy(Reader reader, boolean closeIn, Appendable out)
throws IOException {
+ try {
+ CharBuffer buffer = CharBuffer.allocate(4096);
+ int r;
+ while ((r = reader.read(buffer)) != -1) {
+ buffer.rewind();
+ out.append(buffer);
+ buffer.flip();
+ }
+ } finally {
+ if (closeIn) IOUtils.closeQuietly(reader);
+ }
+ }
+
/** Convert a byte array to a string; consistently uses \n line endings
* in java. This uses a default {...@link Charset UTF-8} charset.
*
