From b3bd10ae8f9c768fba000f95febbd4e5b99a699b Mon Sep 17 00:00:00 2001
From: "Donald J. Brown" <mrdon@apache.org>
Date: Sat, 25 Mar 2006 03:49:18 +0000
Subject: [PATCH] Readding the Pell fileupload.  I believe we can keep the LGPL
 code, just not ship its jars and mark them as optional

git-svn-id: https://svn.apache.org/repos/asf/incubator/webwork2@388696 13f79535-47bb-0310-9956-ffa450edef68
---
 ivy.xml                                       |   3 +
 .../multipart/PellMultiPartRequest.java       | 129 ++++++++++++++++++
 2 files changed, 132 insertions(+)
 create mode 100644 src/java/org/apache/struts/action2/dispatcher/multipart/PellMultiPartRequest.java

diff --git a/ivy.xml b/ivy.xml
index c57eecaba..26e22783f 100644
--- a/ivy.xml
+++ b/ivy.xml
@@ -88,6 +88,9 @@
         <!-- fileupload -->
         <dependency org="apache" name="commons-fileupload" rev="1.1" conf="fileupload->default"/>
 
+        <!-- fileupload-pell -->
+        <dependency org="pell" name="multipartrequest" rev="1.19" conf="fileupload-pell->default"/>
+
         <!-- sitemesh -->
         <dependency org="opensymphony" name="sitemesh" rev="2.2.1" conf="sitemesh->default"/>
 
diff --git a/src/java/org/apache/struts/action2/dispatcher/multipart/PellMultiPartRequest.java b/src/java/org/apache/struts/action2/dispatcher/multipart/PellMultiPartRequest.java
new file mode 100644
index 000000000..d2d1323fb
--- /dev/null
+++ b/src/java/org/apache/struts/action2/dispatcher/multipart/PellMultiPartRequest.java
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2002-2003 by OpenSymphony
+ * All rights reserved.
+ */
+package org.apache.struts.action2.dispatcher.multipart;
+
+import org.apache.struts.action2.config.Configuration;
+import org.apache.struts.action2.WebWorkConstants;
+import http.utils.multipartrequest.ServletMultipartRequest;
+
+import javax.servlet.http.HttpServletRequest;
+import java.io.File;
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.List;
+
+
+/**
+ * Multipart form data request adapter for Jason Pell's multipart utils package.
+ *
+ * @author <a href="matt@smallleap.com">Matt Baldree</a> (modified for WW's use)
+ * @author <a href="scott@atlassian.com">Scott Farquhar</a> (added i18n handling (WW-109))
+ */
+public class PellMultiPartRequest extends MultiPartRequest {
+
+    private ServletMultipartRequest multi;
+
+
+    /**
+     * Creates a new request wrapper to handle multi-part data using methods adapted from Jason Pell's
+     * multipart classes (see class description).
+     *
+     * @param maxSize        maximum size post allowed
+     * @param saveDir        the directory to save off the file
+     * @param servletRequest the request containing the multipart
+     */
+    public PellMultiPartRequest(HttpServletRequest servletRequest, String saveDir, int maxSize) throws IOException {
+        //this needs to be synchronised, as we should not change the encoding at the same time as
+        //calling the constructor.  See javadoc for MultipartRequest.setEncoding().
+        synchronized (this) {
+            setEncoding();
+            multi = new ServletMultipartRequest(servletRequest, saveDir, maxSize);
+        }
+    }
+
+
+    public Enumeration getFileParameterNames() {
+        return multi.getFileParameterNames();
+    }
+
+    public String[] getContentType(String fieldName) {
+        return new String[]{multi.getContentType(fieldName)};
+    }
+
+    public File[] getFile(String fieldName) {
+        return new File[]{multi.getFile(fieldName)};
+    }
+
+    public String[] getFileNames(String fieldName) {
+
+        // TODO - not sure about this - is this the filename of the actual file or
+        // TODO - the uploaded filename as provided by the browser?
+        // TODO - Not sure what version of Pell this class uses as it doesn't seem to be the latest
+        return new String[]{multi.getFile(fieldName).getName()};
+    }
+
+    public String[] getFilesystemName(String fieldName) {
+        return new String[]{multi.getFileSystemName(fieldName)};
+    }
+
+    public String getParameter(String name) {
+        return multi.getURLParameter(name);
+    }
+
+    public Enumeration getParameterNames() {
+        return multi.getParameterNames();
+    }
+
+    public String[] getParameterValues(String name) {
+        Enumeration enumeration = multi.getURLParameters(name);
+
+        if (!enumeration.hasMoreElements()) {
+            return null;
+        }
+
+        List values = new ArrayList();
+
+        while (enumeration.hasMoreElements()) {
+            values.add(enumeration.nextElement());
+        }
+
+        return (String[]) values.toArray(new String[values.size()]);
+    }
+
+    public List getErrors() {
+        return Collections.EMPTY_LIST;
+    }
+
+    /**
+     * Sets the encoding for the uploaded params.  This needs to be set if you are using character sets other than
+     * ASCII.
+     * <p/>
+     * The encoding is looked up from the configuration setting 'webwork.i18n.encoding'.  This is usually set in
+     * default.properties & webwork.properties.
+     */
+    private static void setEncoding() {
+        String encoding = null;
+
+        try {
+            encoding = Configuration.getString(WebWorkConstants.WEBWORK_I18N_ENCODING);
+
+            if (encoding != null) {
+                //NB: This should never be called at the same time as the constructor for
+                //ServletMultiPartRequest, as it can cause problems.
+                //See javadoc for MultipartRequest.setEncoding()
+                http.utils.multipartrequest.MultipartRequest.setEncoding(encoding);
+            } else {
+                http.utils.multipartrequest.MultipartRequest.setEncoding("UTF-8");
+            }
+        } catch (IllegalArgumentException e) {
+            log.info("Could not get encoding property 'webwork.i18n.encoding' for file upload.  Using system default");
+        } catch (UnsupportedEncodingException e) {
+            log.error("Encoding " + encoding + " is not a valid encoding.  Please check your webwork.properties file.");
+        }
+    }
+}