Added support for document export, no link from the pad so far

node/ExportHandler.js

@@ -0,0 +1,116 @@
+/**
+ * Handles the export requests
+ */
+
+/*
+ * 2011 Peter 'Pita' Martischka
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS-IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+var exporthtml = require("./exporters/exporthtml");
+var padManager = require("./PadManager");
+var async = require("async");
+var fs = require("fs");
+var settings = require('./settings');
+
+//load abiword only if its enabled
+if(settings.abiword != null)
+  var abiword = require("./Abiword");
+
+/**
+ * do a requested export
+ */ 
+exports.doExport = function(req, res, padId, type)
+{
+  //tell the browser that this is a downloadable file
+  res.attachment(padId + "." + type);
+
+  //if this is a plain text export, we can do this directly
+  if(type == "txt")
+  {
+    padManager.getPad(padId, function(err, pad)
+    {
+      if(err)
+        throw err;
+         
+      res.send(pad.text());
+    });
+  }
+  else
+  {
+    var html;
+    var randNum;
+    var srcFile, destFile;
+  
+    async.series([
+      //render the html document
+      function(callback)
+      {
+        exporthtml.getPadHTMLDocument(padId, null, false, function(err, _html)
+        {
+          html = _html;
+          callback(err);
+        });   
+      },
+      //decide what to do with the html export
+      function(callback)
+      {
+        //if this is a html export, we can send this from here directly
+        if(type == "html")
+        {
+          res.send(html);
+          callback("stop");  
+        }
+        //write the html export to a file
+        else
+        {
+          randNum = Math.floor(Math.random()*new Date().getTime());
+          srcFile = "/tmp/eplite_export_" + randNum + ".html";
+          fs.writeFile(srcFile, html, callback); 
+        }
+      },
+      //send the convert job to abiword
+      function(callback)
+      {
+        //ensure html can be collected by the garbage collector
+        html = null;
+      
+        destFile = "/tmp/eplite_export_" + randNum + "." + type;
+        abiword.convertFile(srcFile, destFile, type, callback);
+      },
+      //send the file
+      function(callback)
+      {
+        res.sendfile(destFile, null, callback);
+      },
+      //clean up temporary files
+      function(callback)
+      {
+        async.parallel([
+          function(callback)
+          {
+            fs.unlink(srcFile, callback);
+          },
+          function(callback)
+          {
+            fs.unlink(destFile, callback);
+          }
+        ], callback);
+      }
+    ], function(err)
+    {
+      if(err && err != "stop") throw err;
+    })
+  }
+};