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https://github.com/xomboverlord/ldc.git
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b15b3484c8
Initial commit after moving to Tango instead of Phobos. Lots of bugfixes... This build is not suitable for most things.
98 lines
3.0 KiB
D
98 lines
3.0 KiB
D
/*******************************************************************************
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Illustrates use of the Arguments class.
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*******************************************************************************/
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import tango.util.Arguments;
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import tango.io.Stdout;
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import tango.io.FileConduit;
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import tango.text.stream.LineIterator;
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void usage()
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{
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Stdout("Usage: [OPTIONS]... FILES...").newline;
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Stdout("This is a program that does something.").newline;
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Stdout.newline;
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Stdout("OPTIONS: ").newline;
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Stdout("Output this help message: -?, --help").newline;
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Stdout("Do cool things to your files: -c, -C, --cool").newline;
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Stdout("Use filename as response file: -r, -R, --response").newline;
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}
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void main(char[][] cmdlArgs)
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{
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char[][] implicitArguments = ["files"];
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char[][][] argumentAliases;
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argumentAliases ~= ["help", "?"];
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argumentAliases ~= ["cool", "C", "c"];
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argumentAliases ~= ["response", "R", "r"];
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auto args = new Arguments(cmdlArgs, implicitArguments, argumentAliases);
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bool fileExistsValidation(char[] arg)
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{
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bool rtn;
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FilePath argFile = new FilePath(arg);
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rtn = argFile.exists;
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if (!rtn)
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Stdout.format("Specified path does not exist: {}", arg).newline;
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return rtn;
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}
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bool singleFileValidation(char[][] args, inout char[] invalidArg)
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{
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if (args.length > 1)
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{
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Stdout("Cannot specify multiple paths for argument.").newline;
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invalidArg = args[1];
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}
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else
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return true;
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return false;
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}
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args.addValidation("response", &fileExistsValidation);
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args.addValidation("response", &singleFileValidation);
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args.addValidation("files", true, true);
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bool argsValidated = true;
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try
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args.validate;
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catch (ArgumentException ex)
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{
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if (ex.reason == ArgumentException.ExceptionReason.MISSING_ARGUMENT)
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Stdout.format("Missing Argument: {} ({})", ex.name, ex.msg).newline;
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else if (ex.reason == ArgumentException.ExceptionReason.MISSING_PARAMETER)
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Stdout.format("Missing Parameter to Argument: {} ({})", ex.name, ex.msg).newline;
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else if (ex.reason == ArgumentException.ExceptionReason.INVALID_PARAMETER)
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Stdout.format("Invalid Parameter: {} ({})", ex.name, ex.msg).newline;
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Stdout.newline;
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argsValidated = false;
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}
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if ((!argsValidated) || ("help" in args))
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usage();
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else
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{// ready to run
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if ("response" in args)
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{
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Stdout(args["response"][0]).newline;
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auto file = new FileConduit(args["response"][0]);
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auto lines = new LineIterator!(char)(file);
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char[][] arguments;
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foreach (line; lines)
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arguments ~= line.dup;
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args.parse(arguments, implicitArguments, argumentAliases);
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}
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if ("cool" in args)
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{
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Stdout ("Listing the files to be actioned in a cool way.").newline;
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foreach (char[] file; args["files"])
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Stdout.format("{}", file).newline;
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Stdout ("Cool and secret action performed.").newline;
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}
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if ("x" in args)
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Stdout.format("User set the X factor to '{}'", args["x"]).newline;
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}
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}
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