Git gui blame from Sublime Text 3

Question

I have tried many things, but none of them worked.

Expected result: I type a shortkey, and git gui blame opens the current file at the line the pointer is on.

I work on Windows 7, with Sublime 3 Build 3083

First try : Custom Build System

{ "cmd": [ "C:\\Program Files (x86)\\Git\\cmd\\git.exe" "gui" "blame" "$file"] }

In a file named git_gui_blame.sublime-build

Then Tools -> Build System -> git_gui_blame. But then Ctrl+B only makes "no build system" appear

Second try : Custom key binding

Preference -> Key Bindings - User

{ "keys": ["ctrl+B"],
  "command": "exec", 
  "args": { 
            "cmd": [
                "C:\\Program Files (x86)\\Git\\cmd\\git.exe",
                "gui",
                "blame",
                ?//What to put here ?
                ]
          } 
},

I tried replacing "?" with "$file", inspired from the $file of the build system, but I got this error

which can be translated by "Incorrect file path : /path/to/$file : Inexistant file or repertory

Third try : Custom Plugin

import sublime, sublime_plugin, os

class SublimeBlameCommand(sublime_plugin.WindowCommand):
def run(self, **kwargs):
    folder_name, file_name = os.path.split(self.window.active_view().file_name())
    print(folder_name + " _______ " + file_name)
    try:
        self.window.active_view().run_command('exec', {'cmd': ['C:\\Program Files (x86)\\Git\\cmd\\git.exe', 'gui', 'blame', file_name], 'working_dir':folder_name, 'shell':False} )
    except TypeError:
        print("Error in SublimeBlame Plugin")

and after that, in Preferences -> Key Bindings - User

  { "keys": ["ctrl+k"], 
  "command": "sublime_blame"
  },

But Ctrl+k does absolutely nothing.

So I'm stuck here. What can I do differently ? My prefered try is the second because I feel I got the closest to the expected result, but I couldn't find what to replace the "?" with.

Answer 1

Got it working with:

import sublime, sublime_plugin, subprocess, os, ntpath

class GitguiblameCommand(sublime_plugin.TextCommand):    def run(self,
edit):
    if os.name == "nt":
        startupinfo = subprocess.STARTUPINFO()
        startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW

    filepath = self.view.file_name()
    dirpath = os.path.dirname(filepath)
    filename = ntpath.basename(filepath)
    process = subprocess.Popen(('C:\Program Files (x86)\Git\cmd\git.cmd', 'gui', 'blame', filename),cwd=os.path.dirname(filepath),
    stdin=subprocess.PIPE, stdout=subprocess.PIPE, startupinfo=startupinfo)

It seems git-gui appends filename to currentworking directory. Use os.path.split or os.path.basename on other OS's.