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Program.cs
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Program.cs
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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;
using System.Text.RegularExpressions;
using System.Windows.Forms;
namespace CustomURL
{
static class Program
{
static void Main(string[] args)
{
try
{
var arguments = decodeSwitches(args);
if (arguments.ShowHelp || arguments.Filename == null)
{
displayHelp();
}
else
{
startProcess(arguments.Filename, arguments.Args, arguments.Url);
}
}
catch (Exception ex)
{
Trace.TraceError(ex.ToString());
}
}
private static void displayHelp()
{
var sb = new StringBuilder();
sb.AppendLine("CustomURL.exe");
sb.AppendLine("Copyright 2015 Mattias Åslund <[email protected]>");
sb.AppendLine();
sb.AppendLine("CustomURL --url [protocol]://[url] [program path] [arguments]");
sb.AppendLine();
sb.AppendLine(" where program path and arguments can contain {0} for protocol and {1} for url.");
sb.AppendLine();
sb.AppendLine("Splits protocol and url parts from uri and executes another application.");
sb.AppendLine("This converter is mainly useful when registering a custom url handler for browser protocols, such as rdp://");
sb.AppendLine();
sb.AppendLine("Example:");
sb.AppendLine(" CustomURL --url rdp://10.0.0.1 mstsc.exe /v:{1}");
sb.AppendLine();
MessageBox.Show(sb.ToString(), "CustomURL.exe Help");
}
private static void startProcess(string filename, string[] arguments, string url)
{
var urlParts = split(url);
var expandedFilename = expand(filename, urlParts);
var expandedArguments = string.Format(string.Join(" ", arguments), urlParts.Protocol, urlParts.Url);
Trace.TraceInformation("Running {0} {1}", expandedFilename, expandedArguments);
Process.Start(expandedFilename, expandedArguments);
}
private static Arguments decodeSwitches(string[] args)
{
var arguments = new Arguments();
int index = 0;
while (index < args.Length)
{
var arg = args[index];
if (!arg.StartsWith("-"))
break;
switch (arg)
{
case "--url":
index++;
if (index >= args.Length)
throw new ArgumentException("Argument after --url is missing.");
arguments.Url = args[index];
Trace.TraceInformation("Url to strip: {0}", arguments.Url);
break;
case "--help":
arguments.ShowHelp = true;
Trace.TraceInformation("Displaying help.");
break;
default:
throw new ArgumentException("Unsupported switch: " + arg);
}
index++;
}
if (index < args.Length)
{
arguments.Filename = args[index];
index++;
}
arguments.Args = new string[args.Length - index];
Array.Copy(args, index, arguments.Args, 0, arguments.Args.Length);
return arguments;
}
private static string expand(string filename, UrlParts urlParts)
{
var expandedFilename = string.Format(Environment.ExpandEnvironmentVariables(filename), urlParts.Protocol, urlParts.Url);
Trace.TraceInformation("Filename: {0}", expandedFilename);
return expandedFilename;
}
private static UrlParts split(string urlArgument)
{
if (urlArgument == null)
return new UrlParts { Protocol = "", Url = "" };
var expression = @"^(\w+)://(.+?)(?:/(.*))?$";
var matches = Regex.Match(urlArgument, expression);
if (matches.Groups.Count != 4)
throw new ArgumentException(string.Format("Url does not match '{0}'.", expression));
var protocol = matches.Groups[1].Captures[0].Value;
Trace.TraceInformation("Protocol: {0}", protocol);
var url = matches.Groups[2].Captures[0].Value;
Trace.TraceInformation("Url: {0}", url);
return new UrlParts { Protocol = protocol, Url = url };
}
}
class Arguments
{
public bool ShowHelp { get; set; }
public string Url { get; set; }
public string Filename { get; set; }
public string[] Args { get; set; }
}
class UrlParts
{
public string Protocol { get; set; }
public string Url { get; set; }
}
}