Improve klr

[ChengTian]

parent #1013 #1071

• RuntimeBootstrapper already does the following expansion:
  klr /path/to/MyApplication.dll ---> klr --lib /path/to/ MyApplication.
  So we only need to generate --appbase /path/to/ part in this case

(See https://github.com/aspnet/KRuntime/blob/dev/src/klr.hosting.shared/RuntimeBootstrapper.cs#L298)

• Modifying src/klr.mono.managed/EntryPoint.cs to do the expansion on Mono is much more easier. We can even add --appbase for klr on Mono in EntryPoint.cs if we want it.

[ChengTian]

strcpy_s() works for char arrays but we need the version for wide char (WCHAR) arrays. The secure version of lstrcpy() is StringCchCopyW():
http://msdn.microsoft.com/en-us/library/windows/desktop/ms647490(v=vs.85).aspx
http://msdn.microsoft.com/en-us/library/windows/desktop/ms647527(v=vs.85).aspx

[ChengTian]

Found a bug:

Fixed in the latest commit. After fix:

[davidfowl]

One thing we need to do is merge the help between the lower layer and apphost,

klr -> Shows help for the klr.exe
klr /path/to/project.json -> Shows help for klr.exe Microsoft.Framework.ApplicationHost

The latter is kind of weird so we should try to make this transparent so that klr --help just shows all the options.

[troydai]

Err, we really want to print three !?

[ChengTian]

It was a temporary backup and that line was for testing & debugging. Please check the latest commit.

[ChengTian]

Merged the help info in the latest commit:

Now running ApplicationHost without any argument doesn't give help info:

Note that some options only applies to ApplicationHost case. If you are running an assembly with an incompatible option:

[davidfowl]

Nice!

[ChengTian]

I would suggest that we do #1071 in this PR because help info of klr on Mono now is

Usage: klr [options]

Options:
  --appbase <PATH>                 Application base directory path
  --lib <LIB_PATHS>                Paths used for library look-up
  -?|-h|--help                     Show help information
  --version                        Show version information
  --watch                          Watch file changes
  --packages <PACKAGE_DIR>         Directory containing packages
  --configuration <CONFIGURATION>  The configuration to run under
  --port <PORT>                    The port to the compilation server

--appbase should be available on Mono, as the help info suggested.

[ChengTian]

Added --appbase for klr on Mono.
Tested with the following test cases, on both Windows and *nix:

klr
klr foo
klr --foo
klr --port
klr --port 8888
klr .\ConsoleApp
klr .\ConsoleApp run
klr --appbase .\ConsoleApp .\ConsoleApp run
klr --port 8888 .\ConsoleApp run
klr --watch .\ConsoleApp run
klr --port 8888 --watch .\ConsoleApp run
klr .\ConsoleApp\bin\Debug\aspnet50\ConsoleApp.dll
klr --appbase .\ConsoleApp .\ConsoleApp\bin\Debug\aspnet50\ConsoleApp.dll
klr --watch .\ConsoleApp\bin\Debug\aspnet50\ConsoleApp.dll

@davidfowl , please check the latest commit and sign off.