zip-dir.cs

#!/usr/bin/env -S dotnet run 

// About: This is tool to create a zip file from a directory.
// If no filename is given, it creates one in the temp directory.
// The --git option can be used to add only files committed with git.

// Example usages:
// $ zip-dir.cs ~/projects/example 
// /tmp/tree-sitter-c-3483789584290746392.zip
// $ zip-dir.cs ~/projects/example example.zip
// $ zip-dir.cs ~/projects/example example.zip --git

// Dependencies:
// To run this script, dotnet must be installed (at least v10.0.0).
// If the --git is used, then git must also be installed.

using System.Diagnostics;
using System.IO.Compression;
using Microsoft.VisualBasic;

var gitFilesOnly = false;

void usage()
{
    var progName = Path.GetFileName(Environment.GetCommandLineArgs()[0]);
    Console.WriteLine("usage: {0} <dir-to-zip> [dest-zip-filename] [--git]", progName);
    Console.WriteLine(@"
    Options:
        --git : include git commited files only (requires git)
    ");
    Environment.Exit(1);
}
var posArgs = new List<string>();

foreach (var arg in args)
{
    if (arg[0] != '-')
    {
        posArgs.Add(arg);
        continue;
    }
    switch (arg.TrimStart('-'))
    {
        case "git":
            gitFilesOnly = true;
            break;
        default:
            usage();
            break;
    }
}

if (posArgs.Count == 0)
{
    Console.WriteLine("directory name is required");
    usage();
}
var srcDir = Path.TrimEndingDirectorySeparator(posArgs[0]);

string destFilename;
if (posArgs.Count >= 2)
{
    destFilename = Path.Combine(Directory.GetCurrentDirectory(), posArgs[1]);
    if (Path.GetExtension(destFilename) != ".zip")
    {
        Console.WriteLine("invalid destination filename: must have a .zip extension");
        usage();
    }
}
else
{
    var tempPath = Path.GetTempPath();
    var basename = Path.GetFileNameWithoutExtension(srcDir);
    var id = Random.Shared.NextInt64().ToString();
    var filename = Path.ChangeExtension(basename + "-" + id, "zip");
    destFilename = Path.Combine(tempPath, filename);
}


Console.WriteLine(destFilename);

if (gitFilesOnly)
{
    Directory.SetCurrentDirectory(srcDir);

    var info = new ProcessStartInfo()
    {
        FileName = "git",
        Arguments = string.Join(" ", "ls-files", srcDir),
        CreateNoWindow = false,
    };
    info.RedirectStandardOutput = true;
    using (var proc = Process.Start(info))
    {
        var output = proc?.StandardOutput.ReadToEnd();
        var zip = ZipFile.Open(destFilename, ZipArchiveMode.Create);
        foreach (var name in Strings.Split(output, "\n"))
        {
            if (name.Length == 0) continue;
            zip.CreateEntryFromFile(name, name);
        }
        zip.Dispose();
    }

}
else
{
    using (var destFile = File.OpenWrite(destFilename))
    {
        ZipFile.CreateFromDirectory(srcDir, destFile);
    }
}