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ShowUsageBehavior.cs

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/*----------------------------------------------------------

This Source Code Form is subject to the terms of the

Mozilla Public License, v.2.0. If a copy of the MPL

was not distributed with this file, You can obtain one

at http://mozilla.org/MPL/2.0/.

----------------------------------------------------------*/

namespace oscript

{

internal class ShowUsageBehavior : AppBehavior

{

public override int Execute()

{

Output.WriteLine($"1Script Execution Engine. Version {Program.GetVersion()}");

Output.WriteLine();

Output.WriteLine("Usage:");

Output.WriteLine(" oscript.exe [options] <script_path> [script_arguments...]");

Output.WriteLine(" oscript.exe <mode> [mode_options] <script_path> [script_arguments...]");

Output.WriteLine();

const int modeWidth = -18;

const int subOptionWidth = -14;

Output.WriteLine("Modes:");

Output.WriteLine($" {"-measure",modeWidth} Measures script execution time.");

Output.WriteLine($" {"-compile",modeWidth} Shows compiled module without execution.");

Output.WriteLine($" {"-check",modeWidth} Provides syntax check.");

Output.WriteLine($" {"",modeWidth} Options:");

Output.WriteLine($" {"",modeWidth} {"-cgi",subOptionWidth} Syntax check in CGI-mode.");

Output.WriteLine($" {"",modeWidth} {"-env=<file>",subOptionWidth} Path to entrypoint file for context.");

Output.WriteLine($" {"-debug",modeWidth} Runs script in debug mode.");

Output.WriteLine($" {"",modeWidth} Options:");

Output.WriteLine($" {"",modeWidth} {"-port=<port>",subOptionWidth} Debugger port (default is 2801).");

Output.WriteLine($" {"",modeWidth} {"-noWait",subOptionWidth} Do not wait for debugger connection.");

Output.WriteLine($" {"-version, -v",modeWidth} Output version string.");

Output.WriteLine();

Output.WriteLine("Options:");

Output.WriteLine($" {"-encoding=<name>",modeWidth} Set output encoding (e.g. utf-8).");

Output.WriteLine($" {"-codestat=<file>",modeWidth} Write code execution statistics to file.");

Output.WriteLine();

Output.WriteLine("CGI Mode:");

Output.WriteLine(" oscript.exe -cgi <script_path> [script_arguments...]");

Output.WriteLine(" Runs as CGI application under HTTP-server.");

return 0;

}

}

}