--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/servlet/src/digilib/image/DocuImageImpl.java	Thu Jan 17 15:25:46 2002 +0100
@@ -0,0 +1,84 @@
+/* DocuImage -- General image interface class implementation
+
+  Digital Image Library servlet components
+
+  Copyright (C) 2001, 2002 Robert Casties (robcast@mail.berlios.de)
+
+  This program is free software; you can redistribute  it and/or modify it
+  under  the terms of  the GNU General  Public License as published by the
+  Free Software Foundation;  either version 2 of the  License, or (at your
+  option) any later version.
+   
+  Please read license.txt for the full details. A copy of the GPL
+  may be found at http://www.gnu.org/copyleft/lgpl.html
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+*/
+
+package digilib.image;
+
+import java.io.*;
+import javax.servlet.ServletResponse;
+
+import digilib.*;
+import digilib.io.*;
+
+public abstract class DocuImageImpl implements DocuImage {
+
+  protected Utils util = null;
+
+  public DocuImageImpl() {
+    util = new Utils();
+  }
+
+  public DocuImageImpl(Utils u) {
+    util = u;
+  }
+
+  public void setUtils(Utils u) {
+    util = u;
+  }
+
+  protected String[] knownFileTypes = {"jpg", "png", "gif", "tiff"};
+
+  public String[] getKnownFileTypes() {
+    return knownFileTypes;
+  }
+
+  /**
+   *  send an image file as-is
+   */
+  public void sendFile(File f, ServletResponse response) throws FileOpException {
+    util.dprintln(4, "sendFile("+f+")");
+    String mimeType = FileOps.mimeForFile(f);
+    if (mimeType == null) {
+      util.dprintln(2, "ERROR(sendFile): unknown file Type");
+      throw new FileOpException("Unknown file type.");
+    }
+    response.setContentType(mimeType);
+    // open file
+    try {
+      FileInputStream inFile = new FileInputStream(f);
+      OutputStream outStream = response.getOutputStream();
+      byte dataBuffer[] = new byte[1024];
+      int len;
+      while ((len = inFile.read(dataBuffer)) != -1) {
+        // copy out file
+        outStream.write(dataBuffer, 0, len);
+      }
+      inFile.close();
+    } catch (IOException e) {
+      util.dprintln(2, "ERROR(sendFile): unable to send file");
+      throw new FileOpException("Unable to send file.");
+    }
+  }
+
+  public abstract void loadImage(File f) throws FileOpException;
+  public abstract void writeImage(String mt, ServletResponse res) throws FileOpException;
+  public abstract int getWidth();
+  public abstract int getHeight();
+  public abstract void cropAndScale(int x_off, int y_off, int width, int height, float scale, int qual)  throws ImageOpException;
+}