wip

src/core/Shellify.cs

@@ -0,0 +1,90 @@
+using System.Diagnostics;
+using System.Runtime.CompilerServices;
+
+internal static class Shellify
+{
+	[Flags]
+	private enum ShellSplitState
+	{
+		None = 0,
+		InSingleQuote = 1 << 0,
+		InDoubleQuote = 1 << 1,
+		Escape = 1 << 2
+	}
+
+	/// <summary>
+	/// Splits a shell-escaped string into arguments, handling quotes and escapes.
+	/// </summary>
+	public static List<string> ShellSplit(string input)
+	{
+		var args = new List<string>();
+		if (string.IsNullOrEmpty(input)) return args;
+		var current = new System.Text.StringBuilder();
+		var state = ShellSplitState.None;
+		foreach (char c in input)
+		{
+			if (state.HasFlag(ShellSplitState.Escape))
+			{
+				current.Append(c);
+				state &= ~ShellSplitState.Escape;
+			}
+			else if (c == '\\')
+			{
+				state |= ShellSplitState.Escape;
+			}
+			else if (c == '\'' && !state.HasFlag(ShellSplitState.InDoubleQuote))
+			{
+				state ^= ShellSplitState.InSingleQuote;
+			}
+			else if (c == '"' && !state.HasFlag(ShellSplitState.InSingleQuote))
+			{
+				state ^= ShellSplitState.InDoubleQuote;
+			}
+			else if (char.IsWhiteSpace(c) && !state.HasFlag(ShellSplitState.InSingleQuote) && !state.HasFlag(ShellSplitState.InDoubleQuote))
+			{
+				if (current.Length > 0)
+				{
+					args.Add(current.ToString());
+					current.Clear();
+				}
+			}
+			else
+			{
+				current.Append(c);
+			}
+		}
+
+		if (current.Length > 0)
+			args.Add(current.ToString());
+		return args;
+	}
+
+	public static TaskAwaiter<string> GetAwaiter(this string command)
+	{
+		return RunProcessAsync(command).GetAwaiter();
+	}
+
+	private static async Task<string> RunProcessAsync(string command)
+	{
+		var strings = ShellSplit(command);
+		var psi = new ProcessStartInfo
+		{
+			FileName = strings.First(),
+			ArgumentList =
+			{
+				strings.Skip(1)
+			},
+			RedirectStandardOutput = true,
+			RedirectStandardError = true,
+			UseShellExecute = false,
+			CreateNoWindow = true,
+		};
+		using var process = Process.Start(psi);
+		string output = await process.StandardOutput.ReadToEndAsync();
+		string error = await process.StandardError.ReadToEndAsync();
+		await process.WaitForExitAsync();
+		if (process.ExitCode != 0)
+			throw new System.Exception($"Process exited with code {process.ExitCode}: {error}");
+		return output;
+	}
+}