1 files changed, 156 insertions, 0 deletions
diff --git a/reportbuilder/java/com/sun/star/report/pentaho/DefaultNameGenerator.java b/reportbuilder/java/com/sun/star/report/pentaho/DefaultNameGenerator.java
new file mode 100644
index 000000000000..620ddcee98eb
--- /dev/null
+++ b/reportbuilder/java/com/sun/star/report/pentaho/DefaultNameGenerator.java
@@ -0,0 +1,156 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+package com.sun.star.report.pentaho;
+
+import com.sun.star.report.OutputRepository;
+
+import java.io.IOException;
+
+
+public class DefaultNameGenerator
+{
+
+    private final OutputRepository outputRepository;
+
+    public DefaultNameGenerator(final OutputRepository outputRepository)
+    {
+        if (outputRepository == null)
+        {
+            throw new NullPointerException();
+        }
+        this.outputRepository = outputRepository;
+    }
+
+    public String generateName(final String namePrefix, final String mimeType)
+            throws IOException
+    {
+        return generateName(namePrefix, mimeType, true);
+    }
+
+    public String generateStorageName(final String namePrefix, final String mimeType)
+            throws IOException
+    {
+        return generateName(namePrefix, mimeType, false);
+    }
+
+    /**
+     * Generates a new, unique name for storing resources in the output repository. Assuming that proper synchronization
+     * has been applied, the generated name will be unique within that repository.
+     *
+     * @param namePrefix a user defined name for that resource.
+     * @param mimeType   the mime type of the resource to be stored in the repository.
+     * @param isStream
+     * @return the generated, fully qualified name.
+     * @throws java.io.IOException
+     */
+    private String generateName(final String namePrefix, final String mimeType, final boolean isStream)
+            throws IOException
+    {
+        final String name;
+        if (namePrefix != null)
+        {
+            name = namePrefix;
+        }
+        else
+        {
+            name = "file";
+        }
+
+        StringBuffer firstFileName = new StringBuffer();
+        firstFileName.append(name);
+        final String suffix;
+        if (mimeType != null)
+        {
+            suffix = getSuffixForType(mimeType);
+            firstFileName.append('.');
+            firstFileName.append(suffix);
+        }
+        else
+        {
+            suffix = null;
+        }
+        String newName = firstFileName.toString();
+        boolean exists;
+        if (isStream)
+        {
+            exists = outputRepository.exists(newName);
+        }
+        else
+        {
+            exists = outputRepository.existsStorage(newName);
+        }
+        if (exists)
+        {
+            int counter = 0;
+            while (exists)
+            {
+                if (counter < 0) // wraparound should not happen..
+                {
+                    throw new IOException();
+                }
+                firstFileName.delete(0, firstFileName.length());
+                firstFileName.append(name);
+                firstFileName.append(counter);
+                if (suffix != null)
+                {
+                    firstFileName.append('.');
+                    firstFileName.append(suffix);
+                }
+                newName = firstFileName.toString();
+                if (isStream)
+                {
+                    exists = outputRepository.exists(newName);
+                }
+                else
+                {
+                    exists = outputRepository.existsStorage(newName);
+                }
+                counter++;
+            }
+        }
+        return newName;
+    }
+
+    protected String getSuffixForType(final String mimeType)
+    {
+        if ("image/png".equals(mimeType))
+        {
+            return "png";
+        }
+        if ("image/jpeg".equals(mimeType))
+        {
+            return "jpg";
+        }
+        if ("image/gif".equals(mimeType))
+        {
+            return "gif";
+        }
+
+        // todo ... use a flexible mapping ...
+        return "dat";
+    }
+}