Proof of concept

CheatSheet/CheatSheet.py

+import sublime
+import sublime_plugin
+import requests
+import os
+import re
+
+extension_language_dict = {".py" : "python",".cpp" : "cpp",".c" : "c",".sh" : "bash"}
+
+class CheatSheetCommand(sublime_plugin.TextCommand):
+    def print_save_file_error(self, edit):
+        for region in self.view.sel():
+            if not region.empty():
+                s = self.view.substr(region)
+                s = "!!! \n To use cheat.sh plugin, the file needs to be saved with an appopriate \n extension to indicate the programming language being used. (eg. .py, cpp etc) \n!!!"
+                self.view.replace(edit, region, s)
+
+    def print_unsupported_programming_language(self, edit, fileext):
+        for region in self.view.sel():
+            if not region.empty():
+                s = self.view.substr(region)
+                s = "!!! \n It seems that the programming language, as indicated by the extension \"" + fileext + "\" \n is not supported by cheat.sh plugin currently! Please contact the developer to include \n support for this programming langauge. \n!!!"
+                self.view.replace(edit, region, s)
+
+    def run(self, edit):
+        fname = self.view.file_name()
+        if fname == None:
+            self.print_save_file_error(edit)
+            return
+        filename, fileext = os.path.splitext(self.view.file_name());
+        if fileext in extension_language_dict:
+            language = extension_language_dict[fileext]
+        else:
+            self.print_unsupported_programming_language(edit, fileext)
+            return
+        for region in self.view.sel():
+            if not region.empty():
+                s = self.view.substr(region)
+                s = re.sub(r'\s+(?!\n)', r'+', s)
+                r = requests.get('http://cht.sh/' + language  + '/' + s + '?T')
+                s = r.text
+                self.view.replace(edit, region, s)
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CheatSheet/Default (Linux).sublime-keymap

+[
+{ 
+    "keys": ["ctrl+shift+b"],
+    "command": "cheat_sheet"
+}
+]
+

CheatSheet/Default (OSX).sublime-keymap

+[
+{ 
+    "keys": ["super+b"],
+    "command": "cheat_sheet"
+}
+]
+

CheatSheet/dependencies.json

+{
+   "*": {
+      "*": [
+         "requests"
+      ]
+   }
+}
\ No newline at end of file