/// <summary>
/// Analiza las versiones antiguas de un documento OpenOffice
/// </summary>
/// <param name="stm">Stream que contiene el fichero VersionList.xml</param>
/// <param name="zip">Fichero zip que contiene las versiones antiguas embebidas</param>
private void AnalizeFileVersionList(Stream stm, ZipFile zip)
{
try
{
XmlDocument doc = new XmlDocument();
doc.XmlResolver = null;
doc.Load(stm);
XmlNodeList xml = doc.GetElementsByTagName("VL:version-entry");
if (xml != null && xml.Count != 0)
{
foreach (XmlNode xn in xml)
{
OldVersion vai = new OldVersion(xn.Attributes["VL:title"].Value, xn.Attributes["VL:creator"].Value, xn.Attributes["VL:comment"].Value);
//Añadimos el usuario de la versión antigua a los usuarios del documento
this.foundMetadata.Add(new User(vai.Author, false, "VL:creator"));
DateTime d;
if (DateTime.TryParse(xn.Attributes["dc:date-time"].Value.Replace('T', ' '), out d))
{
vai.Date = d;
}
String strFile = "Versions/" + xn.Attributes["VL:title"].Value;
if (zip.EntryFileNames.Contains(strFile))
{
using (Stream stmXML = new MemoryStream())
{
zip.Extract(strFile, stmXML);
stmXML.Seek(0, SeekOrigin.Begin);
using (OpenOfficeDocument ooDoc = new OpenOfficeDocument(stmXML, strExtlo))
{
vai.Metadata = ooDoc.AnalyzeFile();
}
}
}
this.foundMetadata.Add(vai);
}
}
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(String.Format("Error reading file content.xml ({0}).", e.ToString()));
}
}
public static DocumentExtractor Create(string extension, Stream file)
{
if (file == null)
{
throw new ArgumentNullException(nameof(file));
}
string normalizedExtension = NormalizeExtension(extension);
if (IsSupportedExtension(normalizedExtension))
{
DocumentExtractor document = null;
switch (normalizedExtension)
{
case ".sxw":
case ".odt":
case ".ods":
case ".odg":
case ".odp":
document = new OpenOfficeDocument(file, extension);
break;
case ".docx":
case ".xlsx":
case ".pptx":
case ".ppsx":
document = new OfficeOpenXMLDocument(file, extension);
break;
case ".doc":
case ".xls":
case ".ppt":
case ".pps":
document = new Office972003(file);
break;
case ".pdf":
document = new PDFDocument(file);
break;
case ".wpd":
document = new WPDDocument(file);
break;
case ".raw":
case ".cr2":
case ".crw":
case ".jpg":
case ".jpeg":
document = new EXIFDocument(file, extension);
break;
case ".svg":
case ".svgz":
document = new SVGDocument(file);
break;
case ".indd":
document = new InDDDocument(file);
break;
case ".rdp":
document = new RDPDocument(file);
break;
case ".ica":
document = new ICADocument(file);
break;
default:
throw new ArgumentException("Extension not supported", nameof(extension));
}
return(document);
}
else
{
throw new ArgumentException("Extension not supported", nameof(extension));
}
}