Código:
Module Module1
Sub Main()
' Path to directory of files to compress.
Dim dirpath As String = "c:\carpeta\"
Dim di As DirectoryInfo = New DirectoryInfo(dirpath)
' Compress the directory's files.
For Each fi As FileInfo In di.GetFiles()
Compress(fi)
Next
' Decompress all *.gz files in the directory.
' For Each fi As FileInfo In di.GetFiles("*.gz")
'Decompress(fi)
'Next
End Sub
' Method to compress.
Private Sub Compress(ByVal fi As FileInfo)
' Get the stream of the source file.
Using inFile As FileStream = fi.OpenRead()
' Compressing:
' Prevent compressing hidden and already compressed files.
If (File.GetAttributes(fi.FullName) And FileAttributes.Hidden) _
<> FileAttributes.Hidden And fi.Extension <> ".gz" Then
' Create the compressed file.
Using outFile As FileStream = File.Create(fi.FullName + ".gz")
Using Compress As GZipStream = New GZipStream(outFile, CompressionMode.Compress)
' Copy the source file into the compression stream.
Dim buffer As Byte() = New Byte(4096) {}
Dim numRead As Integer
numRead = inFile.Read(buffer, 0, buffer.Length)
Do While numRead <> 0
Compress.Write(buffer, 0, numRead)
numRead = inFile.Read(buffer, 0, buffer.Length)
Loop
Console.WriteLine("Compressed {0} from {1} to {2} bytes.", _
fi.Name, fi.Length.ToString(), outFile.Length.ToString())
End Using
End Using
End If
End Using
End Sub
' Method to decompress.
Private Sub Decompress(ByVal fi As FileInfo)
' Get the stream of the source file.
Using inFile As FileStream = fi.OpenRead()
' Get orignial file extension, for example "doc" from report.doc.gz.
Dim curFile As String = fi.FullName
Dim origName = curFile.Remove(curFile.Length - fi.Extension.Length)
' Create the decompressed file.
Using outFile As FileStream = File.Create(origName)
Using Decompress As GZipStream = New GZipStream(inFile, CompressionMode.Decompress)
' Copy the compressed file into the decompression stream.
Dim buffer As Byte() = New Byte(4096) {}
Dim numRead As Integer
numRead = Decompress.Read(buffer, 0, buffer.Length)
Do While numRead <> 0
outFile.Write(buffer, 0, numRead)
numRead = Decompress.Read(buffer, 0, buffer.Length)
Loop
Console.WriteLine("Decompressed: {0}", fi.Name)
End Using
End Using
End Using
End Sub
End Module
Pero no se me ocurre como puedo para solo comprimir una carpeta, ya que este código comprime cada fichero de dentro del directorio por separado!Sub Main()
' Path to directory of files to compress.
Dim dirpath As String = "c:\carpeta\"
Dim di As DirectoryInfo = New DirectoryInfo(dirpath)
' Compress the directory's files.
For Each fi As FileInfo In di.GetFiles()
Compress(fi)
Next
' Decompress all *.gz files in the directory.
' For Each fi As FileInfo In di.GetFiles("*.gz")
'Decompress(fi)
'Next
End Sub
' Method to compress.
Private Sub Compress(ByVal fi As FileInfo)
' Get the stream of the source file.
Using inFile As FileStream = fi.OpenRead()
' Compressing:
' Prevent compressing hidden and already compressed files.
If (File.GetAttributes(fi.FullName) And FileAttributes.Hidden) _
<> FileAttributes.Hidden And fi.Extension <> ".gz" Then
' Create the compressed file.
Using outFile As FileStream = File.Create(fi.FullName + ".gz")
Using Compress As GZipStream = New GZipStream(outFile, CompressionMode.Compress)
' Copy the source file into the compression stream.
Dim buffer As Byte() = New Byte(4096) {}
Dim numRead As Integer
numRead = inFile.Read(buffer, 0, buffer.Length)
Do While numRead <> 0
Compress.Write(buffer, 0, numRead)
numRead = inFile.Read(buffer, 0, buffer.Length)
Loop
Console.WriteLine("Compressed {0} from {1} to {2} bytes.", _
fi.Name, fi.Length.ToString(), outFile.Length.ToString())
End Using
End Using
End If
End Using
End Sub
' Method to decompress.
Private Sub Decompress(ByVal fi As FileInfo)
' Get the stream of the source file.
Using inFile As FileStream = fi.OpenRead()
' Get orignial file extension, for example "doc" from report.doc.gz.
Dim curFile As String = fi.FullName
Dim origName = curFile.Remove(curFile.Length - fi.Extension.Length)
' Create the decompressed file.
Using outFile As FileStream = File.Create(origName)
Using Decompress As GZipStream = New GZipStream(inFile, CompressionMode.Decompress)
' Copy the compressed file into the decompression stream.
Dim buffer As Byte() = New Byte(4096) {}
Dim numRead As Integer
numRead = Decompress.Read(buffer, 0, buffer.Length)
Do While numRead <> 0
outFile.Write(buffer, 0, numRead)
numRead = Decompress.Read(buffer, 0, buffer.Length)
Loop
Console.WriteLine("Decompressed: {0}", fi.Name)
End Using
End Using
End Using
End Sub
End Module