/// <summary>
/// Method to extract an embedded file
/// </summary>
/// <param name="format">Format of the embedded file</param>
public void Extract(EmbeddedFormat format)
{
try
{
MemoryStream ms = GetFileStream();
ArchiveFile ex = new ArchiveFile(ms, SevenZipFormat.Zip);
embeddedFiles = GetEntries(format, ref ex);
currentModel.NumberOfFiles = embeddedFiles.Count;
for (int i = 0; i < currentModel.NumberOfFiles; i++)
{
if (embeddedFiles[i].IsImage)
{
embeddedFiles[i].CreateImage(true);
}
else if (embeddedFiles[i].IsXml)
{
embeddedFiles[i].CreateXml();
}
else if (embeddedFiles[i].IsText)
{
embeddedFiles[i].CreateText();
}
currentModel.CurrentFile = i + 1;
}
}
catch (Exception e)
{
hasErrors = true;
lastError = e.Message;
}
}
/// <summary>
/// Method to get all embedded files as list according to the target image / file (format) type
/// </summary>
/// <param name="format">Target format</param>
/// <param name="archive">Reference to the opened file (handled as archive)</param>
/// <returns>A list of items</returns>
private List <ExtractorItem> GetEntries(EmbeddedFormat format, ref ArchiveFile archive)
{
string extension = "";
bool allFiles = false;
switch (format)
{
case EmbeddedFormat.Emf:
extension = ".emf";
break;
case EmbeddedFormat.Wmf:
extension = ".wmf";
break;
case EmbeddedFormat.Png:
extension = ".png";
break;
case EmbeddedFormat.Jpg:
extension = ".jpg";
break;
case EmbeddedFormat.All:
allFiles = true;
break;
}
List <ExtractorItem> list = new List <ExtractorItem>();
MemoryStream ms;
string[] split;
char[] delimiter = new char[] { '\\', '/' };
string file, path;
ExtractorItem item;
for (int i = 0; i < archive.Entries.Count; i++)
{
if ((archive.Entries[i].IsFolder == false && archive.Entries[i].FileName.ToLower().EndsWith(extension)) || allFiles == true)
{
ms = new MemoryStream();
archive.Entries[i].Extract(ms);
ms.Flush();
ms.Position = 0;
split = archive.Entries[i].FileName.Split(delimiter);
file = split[split.Length - 1];
path = archive.Entries[i].FileName.Substring(0, archive.Entries[i].FileName.Length - file.Length);
item = new ExtractorItem(file, ms, false, path);
item.Crc32 = archive.Entries[i].CRC;
item.FileSize = (long)archive.Entries[i].Size;
item.LastChange = archive.Entries[i].LastWriteTime;
list.Add(item);
}
}
return(list);
}
