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//
// FilterDOC.cs : Trivial implementation of a MS Word-document filter.
// This filter uses wv1 library - http://wvware.sourceforge.net/
//
// Author: Veerapuram Varadhan <vvaradhan@novell.com>
//
// Copyright (C) 2004 Novell, Inc.
//
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
using System;
using System.IO;
using System.Runtime.InteropServices;
using Beagle.Util;
using Beagle.Daemon;
using Gsf;
namespace Beagle.Filters {
public class FilterDOC : FilterOle {
//////////////////////////////////////////////////////////
private delegate void TextHandlerCallback (IntPtr byteArray, int dataLen,
IntPtr byteHotArray, int hotDataLen,
bool appendStructBrk);
[DllImport ("libbeagleglue")]
private static extern int wv1_glue_init_doc_parsing (string fname, TextHandlerCallback callback);
[DllImport ("libbeagleglue")]
private static extern int wv1_init ();
//////////////////////////////////////////////////////////
static bool wv1_Initted = false;
public FilterDOC ()
{
AddSupportedFlavor (FilterFlavor.NewFromMimeType ("application/msword"));
AddSupportedFlavor (FilterFlavor.NewFromMimeType ("application/vnd.ms-word"));
AddSupportedFlavor (FilterFlavor.NewFromMimeType ("application/x-msword"));
SnippetMode = true;
}
private void IndexText (IntPtr byteArray, int dataLen,
IntPtr byteHotArray, int hotDataLen,
bool appendStructBrk)
{
byte[] data = null;
string str = null;
string strHot = null;
try {
if (dataLen > 0){
data = new byte[dataLen];
Marshal.Copy (byteArray, data, 0, dataLen);
}
if (data != null)
str = System.Text.Encoding.UTF8.GetString (data, 0, dataLen);
data = null;
if (hotDataLen > 0) {
data = new byte [hotDataLen];
Marshal.Copy (byteHotArray, data, 0, hotDataLen);
}
if (data != null)
strHot = System.Text.Encoding.UTF8.GetString (data, 0, hotDataLen);
AppendText (str, strHot);
if (appendStructBrk)
AppendStructuralBreak ();
} catch (Exception e) {
Logger.Log.Debug ("Exception occurred in Word-Doc filter. {0}", e);
}
}
override protected void OpenStorage (FileInfo info)
{
FileName = info.FullName;
}
override protected void ExtractMetaData (Gsf.Input sumStream, Gsf.Input docSumStream)
{
int count = 0;
DocProp prop = null;
if (sumMeta != null) {
prop = sumMeta.Lookup ("gsf:word-count");
if (prop != null)
count = (int) prop.Val;
if (count > 0)
AddProperty (Beagle.Property.NewUnsearched ("fixme:word-count", count));
count = 0;
prop = sumMeta.Lookup ("gsf:page-count");
if (prop != null)
count = (int) prop.Val;
if (count > 0)
AddProperty (Beagle.Property.NewUnsearched ("fixme:page-count", count));
}
}
override protected void DoPull ()
{
int ret;
TextHandlerCallback textHandler;
textHandler = new TextHandlerCallback (IndexText);
if (!wv1_Initted) {
wv1_init ();
wv1_Initted = true;
}
Stopwatch stopwatch = new Stopwatch ();
stopwatch.Start ();
ret = wv1_glue_init_doc_parsing (FileName, textHandler);
if (ret == -2)
Logger.Log.Error ("{0} : is password protected", FileName);
else if (ret == -1)
Logger.Log.Error ("{0} : Unable to read", FileName);
else if (ret == -3)
Logger.Log.Error ("Unable to initiate the parser for {0}", FileName);
stopwatch.Stop ();
Logger.Log.Info ("Word document extraction done in {0}", stopwatch);
Finished ();
}
}
}
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