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waf/utils/launcher/waf-launcher/Main.cs

101 lines
3.3 KiB
C#

using System;
using System.Collections.Generic;
using System.Diagnostics;
namespace waflauncher
{
class MainClass
{
public static System.Diagnostics.Process exec(string command,params string[] args) {
String argstring = String.Join(" ",args);
System.Diagnostics.ProcessStartInfo startinfo = new System.Diagnostics.ProcessStartInfo(command,argstring);
startinfo.UseShellExecute = false;
System.Diagnostics.Process p;
try {
p = Process.Start(startinfo);
} catch (System.ComponentModel.Win32Exception){
return null;
}
p.WaitForExit();
return p;
}
public static int Main (string[] args)
{
//I run waf and if not successful we try on-the-fly install of python
if(!runWaf(args)){
//but first we ask the user if it's okay to install software on their computer
if(mayInstall()){
//I install python and try running waf yet another time
installPython();
if(!runWaf(args)){
//If it still fails something has gone horrible wrong
Console.WriteLine("Python not fully working");
return 1;
}
} else {
Console.WriteLine("Not automatically installing Python");
Console.WriteLine("Please download and install http://www.python.org/ftp/python/2.7.1/python-2.7.1.msi");
Console.WriteLine("or if you have python installed make sure it is on %PATH%");
Console.WriteLine("or run this command again and answer yes");
}
}
return 0;
}
public static bool mayInstall() {
Console.Write("Download and install python [Y/n]? ");
ConsoleKeyInfo a = Console.ReadKey();
Console.WriteLine();
switch(a.KeyChar){
case 'Y':
case 'y':
case '\n':
case '\r':
return true;
//If unsure default to not doing it
default:
return false;
}
}
public static String getwafDir(){
//This changes the current directory to the place where the exe exists
System.Reflection.Assembly a = System.Reflection.Assembly.GetEntryAssembly();
String path = System.IO.Path.GetDirectoryName(a.Location);
return path + System.IO.Path.DirectorySeparatorChar;
}
public static bool runWaf(string[] args){
Process p = exec("python", getwafDir() + "waf", String.Join(" ",args));
//If command could be execeuted return true
if (p != null) return true;
//If not try with the direct path to the default installation which is where installPython() will install it to
//This is done since the %PATH% variable might not be setup to include python
List<String> versions = new List<String>() { "27", "32", "26", "31", "25", "30" };
foreach (String v in versions) {
p = exec("C:\\Python"+v+"\\python.exe", "waf", String.Join(" ",args));
if (p != null) return true;
}
return false;
}
public static void installPython(){
//Make a filename to download python to
String filename = System.IO.Path.GetTempPath() + Char.ToString(System.IO.Path.DirectorySeparatorChar) + "python-2.7.1.msi";
System.Net.WebClient web = new System.Net.WebClient();
Console.WriteLine ("Downloading python 2.7");
web.DownloadFile("http://www.python.org/ftp/python/2.7.1/python-2.7.1.msi",filename);
Console.WriteLine ("python2.7 downloaded to " + filename);
Console.WriteLine ("Installing python");
//filename must be quoted or else msiexec will fail
exec("msiexec","/qn","/i","\"" +filename + "\"");
Console.WriteLine ("Python is now installed");
}
}
}