internal ZlibZipReader(string path)
{
string resolvedPath = ZipLib.ResolvePath(path);
if (!File.Exists(resolvedPath))
{
throw new FileNotFoundException("File does not exist:" + path);
}
this.handle = ZipLib.unzOpen(resolvedPath);
if (handle == IntPtr.Zero)
{
throw new ZipException("Unable to open ZIP file:" + path);
}
}
public override void AddEntry(string relativePath, CompressionMethod compressionMethod)
{
string resolvedPath = ZipLib.ResolvePath(relativePath);
ZipFileEntryInfo info;
info.DateTime = DateTime.Now;
if (this.entryOpened)
{
ZipLib.zipCloseFileInZip(this.handle);
this.entryOpened = false;
}
int result = ZipLib.zipOpenNewFileInZip(this.handle, resolvedPath, out info, null, 0, null, 0, String.Empty, (int)compressionMethod, (int)CompressionLevel.Default);
if (result < 0)
{
throw new ZipException("Error while opening entry for writing: " + relativePath + " - Errorcode: " + result);
}
this.entryOpened = true;
}
internal ZlibZipWriter(string path)
{
this.Filename = path;
string resolvedPath = ZipLib.ResolvePath(path);
this.handle = ZipLib.zipOpen(resolvedPath, 0);
if (this.handle == IntPtr.Zero)
{
// Small trick to get exact error message...
try {
using (FileStream writer = File.Create(path)) {
writer.WriteByte(0);
}
File.Delete(path);
throw new ZipCreationException();
} catch (Exception ex) {
throw new ZipCreationException(ex.Message);
}
}
this.entryOpened = false;
}
public override Stream GetEntry(string relativePath)
{
string resolvedPath = ZipLib.ResolvePath(relativePath);
if (ZipLib.unzLocateFile(this.handle, resolvedPath, 0) != 0)
{
throw new ZipEntryNotFoundException("Entry not found:" + relativePath);
}
ZipEntryInfo entryInfo = new ZipEntryInfo();
int result = ZipLib.unzGetCurrentFileInfo(this.handle, out entryInfo, null, UIntPtr.Zero, null, UIntPtr.Zero, null, UIntPtr.Zero);
if (result != 0)
{
throw new ZipException("Error while reading entry info: " + relativePath + " - Errorcode: " + result);
}
result = ZipLib.unzOpenCurrentFile(this.handle);
if (result != 0)
{
throw new ZipException("Error while opening entry: " + relativePath + " - Errorcode: " + result);
}
byte[] buffer = new byte[entryInfo.UncompressedSize.ToUInt64()];
int bytesRead = 0;
if ((bytesRead = ZipLib.unzReadCurrentFile(this.handle, buffer, (uint)entryInfo.UncompressedSize)) < 0)
{
throw new ZipException("Error while reading entry: " + relativePath + " - Errorcode: " + result);
}
result = ZipLib.unzCloseCurrentFile(handle);
if (result != 0)
{
throw new ZipException("Error while closing entry: " + relativePath + " - Errorcode: " + result);
}
return(new MemoryStream(buffer, 0, bytesRead));
}