93 lines
3.0 KiB
C#
93 lines
3.0 KiB
C#
using CommandLine;
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using MultiversalDiplomacy.Script;
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namespace MultiversalDiplomacy.CommandLine;
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[Verb("repl", HelpText = "Begin an interactive 5dplomacy session.")]
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public class ReplOptions
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{
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[Option('i', "input", HelpText = "Begin the repl session by executing the commands in this file.")]
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public string? InputFile { get; set; }
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[Option('o', "output", HelpText = "Echo the repl session to this file. Specify a directory to autogenerate a filename.")]
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public string? OutputFile { get; set; }
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public static void Execute(ReplOptions args)
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{
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IEnumerable<string>? inputFileLines = null;
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if (args.InputFile is not null) {
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var fullPath = Path.GetFullPath(args.InputFile);
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inputFileLines = File.ReadAllLines(fullPath);
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Console.WriteLine($"Reading from {fullPath}");
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}
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// Create a writer to the output file, if specified.
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StreamWriter? outputWriter = null;
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if (args.OutputFile is not null)
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{
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string fullPath = Path.GetFullPath(args.OutputFile);
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string outputPath = Directory.Exists(fullPath)
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? Path.Combine(fullPath, $"{DateTime.UtcNow:yyyyMMddHHmmss}.log")
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: fullPath;
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Console.WriteLine($"Echoing to {outputPath}");
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outputWriter = File.CreateText(outputPath);
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}
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IEnumerable<string?> GetInputs()
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{
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foreach (string line in inputFileLines ?? [])
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{
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var trimmed = line.Trim();
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// File inputs weren't echoed to the terminal so they need to be echoed here
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Console.WriteLine($"{trimmed}");
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yield return trimmed;
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}
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string? input;
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do
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{
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input = Console.ReadLine();
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yield return input;
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}
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while (input is not null);
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// The last null is returned because an EOF means we should quit the repl.
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}
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IScriptHandler? handler = new ReplScriptHandler(Console.WriteLine);
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Console.Write(handler.Prompt);
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foreach (string? nextInput in GetInputs())
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{
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// Handle quitting directly.
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if (nextInput is null || nextInput == "quit" || nextInput == "exit")
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{
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break;
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}
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string input = nextInput.Trim();
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outputWriter?.WriteLine(input);
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outputWriter?.Flush();
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// Delegate all other command parsing to the handler.
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var result = handler.HandleInput(input);
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// Report errors if they occured.
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if (!result.Success)
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{
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Console.WriteLine($"Error: {result.Message}");
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}
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// Quit if the handler didn't continue processing.
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if (result.NextHandler is null)
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{
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break;
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}
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// Otherwise prompt for the next command.
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Console.Write(handler.Prompt);
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}
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Console.WriteLine("exiting");
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}
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}
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