Add first part of the plugin

Author: psykzz

Context.sublime-menu

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+[
+{
+    "id": "blame",
+    "caption": "Git Blame",
+    "command": "blame"
+}
+]

Default (Linux).sublime-keymap

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+[
+{
+    "keys": ["ctrl+shift+q"],
+    "command": "blame"
+}
+]

Default (OSX).sublime-keymap

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+[
+{
+    "keys": ["ctrl+shift+q"],
+    "command": "blame"
+}
+]

Default (Windows).sublime-keymap

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+[
+{
+    "keys": ["ctrl+shift+q"],
+    "command": "blame"
+}
+]

git-blame.py

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+import sublime
+import sublime_plugin
+import os
+import functools
+from subprocess import check_output as shell
+
+
+blame_cache = {}
+template = '''
+<span>
+<style>
+span {{
+    background-color: brown;
+}}
+a {{
+    text-decoration: none;
+}}
+</style>
+<a href="close">
+<strong>Git Blame:</strong> ({user})
+Last updated: {date} {time} | [{sha}]
+<close>X</close>&nbsp;
+</a>
+</span>
+'''
+
+si = subprocess.STARTUPINFO()
+si.dwFlags |= subprocess.STARTF_USESHOWWINDOW
+
+
+class BlameCommand(sublime_plugin.TextCommand):
+
+    def __init__(self, view):
+        self.view = view
+        self.phantom_set = sublime.PhantomSet(view, 'git-blame')
+
+    @functools.lru_cache(128, False)
+    def get_blame(self, line, path):
+        try:
+            return shell(["git", "blame", "--minimal", "-w",
+                "-L {0},{0}".format(line), path],
+                cwd=os.path.dirname(os.path.realpath(path)),
+                startupinfo=si)
+        except Exception as e:
+            return
+
+    def parse_blame(self, blame):
+        sha, file_path, user, date, time, tz_offset, *_ = blame.decode('utf-8').split()
+
+        # Was part of the inital commit so no updates
+        if file_path[0] == '(':
+            user, date, time, tz_offset = file_path, user, date, time
+            file_path = None
+
+        return(sha, user[1:], date, time)
+
+    def on_phantom_close(self, href):
+        self.view.erase_phantoms('git-blame')
+
+
+    def run(self, edit):
+        phantoms = []
+        self.view.erase_phantoms('git-blame')
+
+        for region in self.view.sel():
+            line = self.view.line(region)
+            (row, col) = self.view.rowcol(region.begin())
+            full_path = self.view.file_name()
+            result = self.get_blame(int(row)+1, full_path)
+            if not result:
+                # Unable to get blame
+                return
+
+            sha, user, date, time = self.parse_blame(result)
+            body = template.format(sha=sha, user=user, date=date, time=time)
+
+            phantom = sublime.Phantom(line, body, sublime.LAYOUT_BLOCK, self.on_phantom_close)
+            phantoms.append(phantom)
+        self.phantom_set.update(phantoms)