Process.Start, bin/bash...and quotes

Hello to everyone,
I'm going completely crazy with this problem
I'm trying to launch an application (in this example, an emulator such as MAME or RetroArch) with path parameters...which can obviously include spaces.

Launched by 'Terminal' this line runs correctly:

Code (JavaScript):

1. "/Users/imac/Downloads/MAME_for_MacOSX_0.212-64bit/mame64" -rompath "/Users/imac/Documents/Emulation/MAME/Roms OK" 88games.zip

Once in Unity, this code also works:

Code (CSharp):

1. ProcessStartInfo startInfo = new ProcessStartInfo()
2. {
3.     FileName = "/bin/bash",
4.     UseShellExecute = false,
5.     Arguments = "-c \"" + "/Users/imac/Downloads/MAME_for_MacOSX_0.212-64bit/mame64" + " -rompath " + "/Users/imac/Documents/Emulation/MAME/Roms" + " " + "88games.zip" + "\""
6. };
7. Process myProcess = new Process
8. {
9.     StartInfo = startInfo
10. };
11. myProcess.Start();
12. myProcess.WaitForExit();

...but that's because there is not a single space in any of the paths or filenames! As soon as there is a space, nothing to do it doesn't work! I can add quotes and escape them or double or triple quotes ...nothing works!

Let's take for instance the last path:
"/Users/imac/Documents/Emulation/MAME/Roms"
...and imagine there is a space in it like so:
"/Users/imac/Documents/Emulation/MAME/Roms OK"
I surround it by escaped quotes:
"\"/Users/imac/Documents/Emulation/MAME/Roms OK\""
...but it will never succeed!
What is please my error? It's like obviously the quoted path is never 'seen' by bin/bash!

Thanks a lot for any help!

 

I had a similar issue recently with bash scripts. When you put a space in the arguments list it treats it as a new parameter, regardless of whether it was quoted or not. I got round the problem by escaping the space itself.

For example,

\"Roms OK\" would become:

\"Roms\ OK\"

 

Thanks for you reply tone!
I finally got it working by the joint use of single quotes, substitution variables and escaped double quotes...thanks to those 2 posts https://unix.stackexchange.com/a/144519, https://stackoverflow.com/a/26167919

So, here is the theory:

Code (CSharp):

1. /bin/bash -c 'echo "$0" "$1"' foo bar

…and put into practice

Code (CSharp):

1. ProcessStartInfo startInfo = new ProcessStartInfo()
2. {
3.     FileName = "/bin/bash",
4.     UseShellExecute = false,
5.     CreateNoWindow = false,
6.     Arguments = "-c '\"/Users/imac/PathToThe/Application.app/Contents/MacOS/Application\" \"$0\" \"$1\" \"$2\"' \"argument_or_Path_1\" \"argument_or_Path_2\" \"argument_or_Path_3\""
7. };
8. Process myProcess = new Process
9. {
10.     StartInfo = startInfo
11. };
12. myProcess.Start();
13. myProcess.WaitForExit();

 

Hey, this might help you: https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/tokens/verbatim

You can use a verbatim string so you don't have to do as much character-escaping.

Code (CSharp):

1. string filename1 = @"c:\documents\files\u0066.txt";
2. string filename2 = "c:\\documents\\files\\u0066.txt";

Hope this helps