Merge Web Scripts from BRANCHES/DEV/DAVE

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5358 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/scripts/ClassPathStore.java

@@ -0,0 +1,231 @@
+/*
+ * Copyright (C) 2005-2007 Alfresco Software Limited.
+ *
+ * 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.
+
+ * This program 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 General Public License for more details.
+
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+ * As a special exception to the terms and conditions of version 2.0 of 
+ * the GPL, you may redistribute this Program in connection with Free/Libre 
+ * and Open Source Software ("FLOSS") applications as described in Alfresco's 
+ * FLOSS exception.  You should have recieved a copy of the text describing 
+ * the FLOSS exception, and it is also available here: 
+ * http://www.alfresco.com/legal/licensing"
+ */
+package org.alfresco.web.scripts;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.alfresco.service.cmr.repository.ScriptLocation;
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.core.io.FileSystemResource;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
+
+import freemarker.cache.FileTemplateLoader;
+import freemarker.cache.TemplateLoader;
+
+
+/**
+ * ClassPath based Web Script Store
+ * 
+ * @author davidc
+ */
+public class ClassPathStore implements WebScriptStore, InitializingBean
+{
+    PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
+    protected String classPath;
+    protected File fileDir;
+
+    
+    /**
+     * Sets the class path
+     * 
+     * @param classPath  classpath
+     */
+    public void setClassPath(String classPath)
+    {
+        this.classPath = classPath;
+    }
+
+    /* (non-Javadoc)
+     * @see org.springframework.beans.factory.InitializingBean#afterPropertiesSet()
+     */
+    public void afterPropertiesSet()
+        throws Exception
+    {
+        ClassPathResource resource = new ClassPathResource(classPath);
+        fileDir = resource.getFile();
+    }
+
+    /* (non-Javadoc)
+     * @see org.alfresco.web.scripts.WebScriptStore#getBasePath()
+     */
+    public String getBasePath()
+    {
+        return "classpath:" + classPath;
+    }
+
+    /* (non-Javadoc)
+     * @see org.alfresco.web.scripts.WebScriptStore#getDescriptionDocumentPaths()
+     */
+    public String[] getDescriptionDocumentPaths()
+    {
+        String[] paths;
+
+        try
+        {
+            int filePathLength = fileDir.getAbsolutePath().length() +1;
+            List<String> documentPaths = new ArrayList<String>();
+            Resource[] resources = resolver.getResources("classpath*:" + classPath + "/**/*_desc.xml");
+            for (Resource resource : resources)
+            {
+                if (resource instanceof FileSystemResource)
+                {
+                    String documentPath = resource.getFile().getAbsolutePath().substring(filePathLength);
+                    documentPath = documentPath.replace('\\', '/');
+                    documentPaths.add(documentPath);
+                }
+            }
+            paths = documentPaths.toArray(new String[documentPaths.size()]);
+        }
+        catch(IOException e)
+        {
+            // Note: Ignore: no service description documents found
+            paths = new String[0];
+        }
+        
+        return paths;
+    }
+
+    /* (non-Javadoc)
+     * @see org.alfresco.web.scripts.WebScriptStore#getDescriptionDocument(java.lang.String)
+     */
+    public InputStream getDescriptionDocument(String documentPath)      
+        throws IOException
+    {
+        File document = new File(fileDir, documentPath);
+        if (!document.exists())
+        {
+            throw new IOException("Description document " + documentPath + " does not exist.");
+        }
+        return new FileInputStream(document);
+    }
+
+    /* (non-Javadoc)
+     * @see org.alfresco.web.scripts.WebScriptStore#getTemplateLoader()
+     */
+    public TemplateLoader getTemplateLoader()
+    {
+        FileTemplateLoader loader = null;
+        try
+        {
+            loader = new FileTemplateLoader(fileDir);
+        }
+        catch (IOException e)
+        {
+            // Note: Can't establish loader, so return null
+        }
+        return loader;
+    }
+
+    /* (non-Javadoc)
+     * @see org.alfresco.web.scripts.WebScriptStore#getScriptLoader()
+     */
+    public ScriptLoader getScriptLoader()
+    {
+        return new ClassPathScriptLoader();
+    }        
+    
+    /**
+     * Class path based script loader
+     * 
+     * @author davidc
+     */
+    private class ClassPathScriptLoader implements ScriptLoader
+    {
+
+        /* (non-Javadoc)
+         * @see org.alfresco.web.scripts.ScriptLoader#getScriptLocation(java.lang.String)
+         */
+        public ScriptLocation getScriptLocation(String path)
+        {
+            ScriptLocation location = null;
+            File scriptPath = new File(fileDir, path);
+            if (scriptPath.exists())
+            {
+                location = new ClassPathScriptLocation(scriptPath);
+            }
+            return location;
+        }
+    }
+
+    /**
+     * Class path script location
+     * 
+     * @author davidc
+     */
+    private static class ClassPathScriptLocation implements ScriptLocation
+    {
+        private File location;
+
+        /**
+         * Construct
+         * 
+         * @param location
+         */
+        public ClassPathScriptLocation(File location)
+        {
+            this.location = location;
+        }
+        
+        /* (non-Javadoc)
+         * @see org.alfresco.service.cmr.repository.ScriptLocation#getInputStream()
+         */
+        public InputStream getInputStream()
+        {
+            try
+            {
+                return new FileInputStream(location);
+            }
+            catch (FileNotFoundException e)
+            {
+                throw new WebScriptException("Unable to retrieve input stream for script " + location.getAbsolutePath());
+            }
+        }
+
+        /* (non-Javadoc)
+         * @see org.alfresco.service.cmr.repository.ScriptLocation#getReader()
+         */
+        public Reader getReader()
+        {
+            return new InputStreamReader(getInputStream());
+        }
+
+        @Override
+        public String toString()
+        {
+            return location.getAbsolutePath();
+        }
+    }
+    
+}