From 3d982813b34f6f230baf4a467cdc37ec92a77595 Mon Sep 17 00:00:00 2001
From: netconomy <netconomy@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c>
Date: Fri, 17 Aug 2007 06:10:56 +0000
Subject: Performance

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@167 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
---
 .../pdfas/impl/input/helper/DataSourceHelper.java  | 92 ++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 src/main/java/at/gv/egiz/pdfas/impl/input/helper/DataSourceHelper.java

(limited to 'src/main/java/at/gv/egiz/pdfas/impl/input/helper')

diff --git a/src/main/java/at/gv/egiz/pdfas/impl/input/helper/DataSourceHelper.java b/src/main/java/at/gv/egiz/pdfas/impl/input/helper/DataSourceHelper.java
new file mode 100644
index 0000000..1e2ffdc
--- /dev/null
+++ b/src/main/java/at/gv/egiz/pdfas/impl/input/helper/DataSourceHelper.java
@@ -0,0 +1,92 @@
+/**
+ * 
+ */
+package at.gv.egiz.pdfas.impl.input.helper;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import at.gv.egiz.pdfas.performance.PerformanceCounters;
+import at.gv.egiz.pdfas.framework.input.DataSource;
+import at.gv.egiz.pdfas.framework.input.PdfDataSource;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+/**
+ * @author wprinz
+ * 
+ */
+public class DataSourceHelper
+{
+  /**
+   * The log.
+   */
+  private static final Log log = LogFactory.getLog(DataSourceHelper.class);
+
+  /**
+   * Converts a PdfDataSource to a byte array.
+   * 
+   * <p>
+   * Note that this function is very memory intensive. Use the Streams whereever
+   * possible.
+   * </p>
+   * 
+   * @deprecated
+   * 
+   * @param pdfDataSource
+   * @return
+   * @throws IOException
+   */
+  public static byte[] convertDataSourceToByteArray(DataSource pdfDataSource)
+  {
+    try
+    {
+      PerformanceCounters.byteArrays.increment();
+
+      byte[] data = new byte[pdfDataSource.getLength()];
+
+      int bytes_written = 0;
+
+      InputStream is = pdfDataSource.createInputStream();
+      int n = 0;
+      while ((n = is.read(data, bytes_written, data.length - bytes_written)) > 0)
+      {
+        bytes_written += n;
+      }
+      is.close();
+
+      assert bytes_written == data.length;
+
+      return data;
+    }
+    catch (IOException e)
+    {
+      log.error(e);
+      throw new RuntimeException(e);
+    }
+  }
+  
+  public static void debugDataSourceToFile(DataSource dataSource, File file)
+  {
+    try
+    {
+      InputStream is = dataSource.createInputStream();
+      FileOutputStream fos = new FileOutputStream(file);
+      byte[] data = new byte[2048];
+      int n = -1;
+      while ((n = is.read(data)) > 0)
+      {
+        fos.write(data, 0, n);
+      }
+      is.close();
+      fos.close();
+    }
+    catch (IOException e)
+    {
+      log.error(e);
+    }
+  }
+}
-- 
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