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https://github.com/fasteddy516/SimplySerial.git
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Implemented custom sorting algorithm to ensure command-line parameters are processed in the correct order
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@ -76,6 +76,7 @@ namespace SimplySerial
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}
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/// <summary>
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/// Validates and processes any command-line arguments that were passed in. Invalid arguments will halt program execution.
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/// </summary>
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@ -85,19 +86,24 @@ namespace SimplySerial
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// get a list of all available com ports
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string[] availablePorts = SerialPort.GetPortNames();
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// switch to lower case and remove '/', '--' and '-' from beginning of arguments - we can process correctly without them
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for (int i = 0; i < args.Count(); i++)
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args[i] = (args[i].TrimStart('/', '-')).ToLower();
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// sort the parameters so that they get processed in order of priority (i.e. 'quiet' option gets processed before something that would normally result in console output)
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Array.Sort(args, new ArgumentSorter());
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// iterate through command-line arguments
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foreach (string arg in args)
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{
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// split argument into components based on 'key:value' formatting
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string[] argument = arg.Split(':');
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// switch to lower case and remove '/', '--' and '-' from beginning of arguments - we can process correctly without them
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argument[0] = (argument[0].TrimStart('/', '-')).ToLower();
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// help
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if (argument[0].StartsWith("h") || argument[0].StartsWith("?"))
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{
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ExitProgram("Sorry, you're on your own.", 0);
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Console.WriteLine("Sorry, you're on your own.");
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ExitProgram(silent: true);
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}
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// quiet (no output to console other than comes in via serial)
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@ -115,7 +121,7 @@ namespace SimplySerial
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// the remainder of possible command-line arguments require two parameters, so let's enforce that now
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else if (argument.Count() < 2)
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{
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ExitProgram(("Invalid or incomplete argument <" + arg + ">\nTry 'SimplySerial help' to see a list of valid arguments"), -1);
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ExitProgram(("Invalid or incomplete argument <" + arg + ">\nTry 'SimplySerial help' to see a list of valid arguments"), exitCode: -1);
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}
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// com port
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@ -126,7 +132,7 @@ namespace SimplySerial
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if (!argument[1].StartsWith("COM"))
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newPort = "COM" + argument[1];
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if (!availablePorts.Contains(newPort))
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ExitProgram("Cannot find specified port <" + newPort + ">", -1);
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ExitProgram(("Cannot find specified port <" + newPort + ">"), exitCode: -1);
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port = newPort;
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Output("PORT: " + port);
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}
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@ -160,7 +166,7 @@ namespace SimplySerial
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}
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else
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{
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ExitProgram(("Invalid or incomplete argument <" + arg + ">\nTry 'SimplySerial help' to see a list of valid arguments"), -1);
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ExitProgram(("Invalid or incomplete argument <" + arg + ">\nTry 'SimplySerial help' to see a list of valid arguments"), exitCode: -1);
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}
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}
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@ -168,12 +174,13 @@ namespace SimplySerial
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if (availablePorts.Count() >= 1)
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SimplySerial.port = availablePorts[0];
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else
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ExitProgram("No COM ports detected.", -1);
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ExitProgram("No COM ports detected.", exitCode: -1);
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ExitProgram("That's All Folks!", 1);
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ExitProgram("That's All Folks!", exitCode: 1);
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}
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/// <summary>
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/// Writes messages using Console.WriteLine() as long as the 'Quiet' option hasn't been enabled
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/// </summary>
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@ -183,22 +190,57 @@ namespace SimplySerial
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if (!SimplySerial.Quiet)
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Console.WriteLine(message);
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}
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/// <summary>
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/// Writes the specified exit message to the console, then waits for user to press a key before halting program execution.
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/// </summary>
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/// <param name="message">Message to display - should indicate the reason why the program is terminating.</param>
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/// <param name="exitCode">Code to return to parent process. Should be <0 if an error occurred, >=0 if program is terminating normally.</param>
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static void ExitProgram(string message, int exitCode)
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/// <param name="silent">Exits without displaying a message or asking for a key press when set to 'true'</param>
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static void ExitProgram(string message="", int exitCode=0, bool silent=false)
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{
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Output(message);
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Console.WriteLine("\nPress any key to exit...");
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if (!SimplySerial.NoWait)
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if (!silent)
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Output(message);
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if (!(SimplySerial.NoWait || silent))
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{
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// we output this line regardless of the 'quiet' option to make it clear that we're waiting for user input
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Console.WriteLine("\nPress any key to exit...");
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while (!Console.KeyAvailable)
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Thread.Sleep(25);
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}
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Environment.Exit(exitCode);
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}
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}
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/// <summary>
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/// Custom string array sorting logic for SimplySerial command-line arguments
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/// </summary>
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public class ArgumentSorter : IComparer<string>
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{
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/// <summary>
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/// Checks the first letter/character of incoming strings for a high-priority letter/character and sorts accordingly
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/// </summary>
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/// <param name="x">string to compare</param>
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/// <param name="y">string to compare</param>
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/// <returns>-1 if a priority character is found in string 'x', 1 if a priority character is found in 'y', 0 if neither string has a priority character</returns>
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public int Compare(string x, string y)
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{
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// '?' or 'h' trigger the 'help' text output and supersede all other command-line arguments
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// 'q' enables the 'quiet' option, which needs to be enabled before something that would normally generate console output
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// 'n' enables the 'nowait' option, which needs to be enabled before anything that would trigger an artificial delay
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foreach (char c in "?hqn")
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{
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if (x[0] == c)
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return (-1);
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else if (y[0] == c)
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return (1);
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}
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// treat everything else equally, as processing order doesn't matter
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return (0);
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}
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}
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}
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