Skip to content

Set and Get a file name internal gzip #366

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
afonsoft wants to merge 2 commits into from
Closed

Set and Get a file name internal gzip #366

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
4c81717
Set and Get a file name internal gzip
Jul 26, 2019
bc79554
Set and Get a file name internal gzip
Jul 26, 2019
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
37 changes: 35 additions & 2 deletions src/ICSharpCode.SharpZipLib/GZip/GzipOutputStream.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,12 @@ private enum OutputState
Closed,
};

private enum FlagSetFileName
{
SET = GZipConstants.FNAME,
NotSet = 0x0
}

#region Instance Fields

/// <summary>
Expand All @@ -52,6 +58,8 @@ private enum OutputState
protected Crc32 crc = new Crc32();

private OutputState state_ = OutputState.Header;
private string filename_;
private FlagSetFileName flagFname_ = FlagSetFileName.NotSet;

#endregion Instance Fields

Expand Down Expand Up @@ -111,6 +119,24 @@ public int GetLevel()
return deflater_.GetLevel();
}

/// <summary>
/// Set a file name internal gzip
/// </summary>
public string FileName
{
get
{
return filename_;
}
set
{
filename_ = value;
flagFname_ = !string.IsNullOrEmpty(filename_)
? FlagSetFileName.SET
: FlagSetFileName.NotSet;
}
}

#endregion Public API

#region Stream overrides
Expand Down Expand Up @@ -218,8 +244,8 @@ private void WriteHeader()
// The compression type
(byte) Deflater.DEFLATED,

// The flags (not set)
0,
// The flags (File Name)
(byte) flagFname_,

// The modification time
(byte) mod_time, (byte) (mod_time >> 8),
Expand All @@ -232,6 +258,13 @@ private void WriteHeader()
(byte) 255
};
baseOutputStream_.Write(gzipHeader, 0, gzipHeader.Length);

if(flagFname_ == FlagSetFileName.SET)
{
var fileNameBytes = System.Text.Encoding.GetEncoding("ISO-8859-1").GetBytes(FileName);
baseOutputStream_.Write(fileNameBytes, 0, fileNameBytes.Length);
baseOutputStream_.Write(new byte[] { 0 }, 0, 0);
}
}
}

Expand Down