Merge Argeo Util and parts of Argeo JCR in Argeo Core.

[lgpl/argeo-commons.git] / org.argeo.core / src / org / argeo / util / StreamUtils.java

diff --git a/org.argeo.core/src/org/argeo/util/StreamUtils.java b/org.argeo.core/src/org/argeo/util/StreamUtils.java
new file mode 100644 (file)
index 0000000..6d7d940
--- /dev/null
+++ b/org.argeo.core/src/org/argeo/util/StreamUtils.java
@@ -0,0 +1,81 @@
+package org.argeo.util;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Reader;
+import java.io.Writer;
+
+/** Utilities to be used when Apache Commons IO is not available. */
+class StreamUtils {
+       private static final int DEFAULT_BUFFER_SIZE = 1024 * 4;
+
+       /*
+        * APACHE COMMONS IO (inspired)
+        */
+
+       /** @return the number of bytes */
+       public static Long copy(InputStream in, OutputStream out)
+                       throws IOException {
+               Long count = 0l;
+               byte[] buf = new byte[DEFAULT_BUFFER_SIZE];
+               while (true) {
+                       int length = in.read(buf);
+                       if (length < 0)
+                               break;
+                       out.write(buf, 0, length);
+                       count = count + length;
+               }
+               return count;
+       }
+
+       /** @return the number of chars */
+       public static Long copy(Reader in, Writer out) throws IOException {
+               Long count = 0l;
+               char[] buf = new char[DEFAULT_BUFFER_SIZE];
+               while (true) {
+                       int length = in.read(buf);
+                       if (length < 0)
+                               break;
+                       out.write(buf, 0, length);
+                       count = count + length;
+               }
+               return count;
+       }
+
+       public static void closeQuietly(InputStream in) {
+               if (in != null)
+                       try {
+                               in.close();
+                       } catch (Exception e) {
+                               //
+                       }
+       }
+
+       public static void closeQuietly(OutputStream out) {
+               if (out != null)
+                       try {
+                               out.close();
+                       } catch (Exception e) {
+                               //
+                       }
+       }
+
+       public static void closeQuietly(Reader in) {
+               if (in != null)
+                       try {
+                               in.close();
+                       } catch (Exception e) {
+                               //
+                       }
+       }
+
+       public static void closeQuietly(Writer out) {
+               if (out != null)
+                       try {
+                               out.close();
+                       } catch (Exception e) {
+                               //
+                       }
+       }
+}