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Refactor host command-line parsing

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Supports a syntax more similar to powershell.exe on Windows, with --file
and --command options, as well as the automatic execution of a script by
name, or a command via string. Prepares for reading of stdin.
This commit is contained in:
Andrew Schwartzmeyer
2015-11-06 20:13:47 -08:00
parent f1d1786ee3
commit 0a3621b8ff
1 changed files with 25 additions and 8 deletions
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src/host/main.cs
+25 -8
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@@ -77,7 +77,6 @@ namespace Microsoft.Samples.PowerShell.Host
/// <summary>
/// Creates and initiates the listener instance.
/// </summary>
/// <param name="args">This parameter is not used.</param>
private static void Main(string[] args)
{
// Custom argument parsing
@@ -90,26 +89,44 @@ namespace Microsoft.Samples.PowerShell.Host
bool hasNext = (i+1) < args.Length;
string nextArg = hasNext ? args[i+1] : string.Empty;
if (hasNext && arg == "--file")
// lone argument is a script
if (!hasNext && arg.EndsWith(".ps1"))
{
initialScript = Path.GetFullPath(arg);
}
// lone argument is an inline script
else if (!hasNext)
{
initialScript = arg;
}
// --file <filePath> was specified
else if (hasNext && (arg == "--file" || arg == "-f"))
{
initialScript = Path.GetFullPath(nextArg);
++i;
}
else if (arg.EndsWith(".ps1"))
// --command <string> was specified
else if (hasNext && (arg == "--command" || arg == "-c"))
{
initialScript = Path.GetFullPath(arg);
if (nextArg == "-")
{
initialScript = "\"TODO: read stdin using Console.OpenStandardInput\"";
}
else
{
initialScript = nextArg;
}
++i;
}
// --working-dir (not on PowerShell for Windows, may be removed)
else if (hasNext && arg == "--working-dir")
{
Directory.SetCurrentDirectory(nextArg);
++i;
}
}
if (string.IsNullOrEmpty(initialScript))
{
initialScript = string.Join(" ", args);
}
}
// TODO: check for input on stdin
// Create the listener and run it
PSListenerConsoleSample listener = new PSListenerConsoleSample(initialScript);