Refactored (2)

Created an `Editor` class out methods in the `Util` class to enhance
code clarity.

cheat/editor.py

@@ -0,0 +1,28 @@
+from __future__ import print_function
+import subprocess
+
+
+class Editor:
+
+    def __init__(self, config):
+        self._config = config
+
+    def editor(self):
+        """ Determines the user's preferred editor """
+
+        # assert that the editor is set
+        if (not self._config.cheat_editor):
+            Utils.die(
+                'You must set a CHEAT_EDITOR, VISUAL, or EDITOR environment '
+                'variable or setting in order to create/edit a cheatsheet.'
+            )
+
+        return self._config.cheat_editor
+
+    def open(self, filepath):
+        """ Open `filepath` using the EDITOR specified by the env variables """
+        editor_cmd = self.editor().split()
+        try:
+            subprocess.call(editor_cmd + [filepath])
+        except OSError:
+            Utils.die('Could not launch ' + self.editor())

cheat/sheet.py

@@ -2,14 +2,16 @@ import io
 import os
 import shutil
 
+from cheat.editor import Editor
 from cheat.utils import Utils
 
 
 class Sheet:
 
-    def __init__(self, sheets, utils):
+    def __init__(self, sheets, utils, editor):
         self._sheets = sheets
         self._utils = utils
+        self._editor = editor
 
     def copy(self, current_sheet_path, new_sheet_path):
         """ Copies a sheet to a new path """
@@ -44,11 +46,11 @@ class Sheet:
     def create(self, sheet):
         """ Creates a cheatsheet """
         new_sheet_path = os.path.join(self._sheets.default_path(), sheet)
-        self._utils.open_with_editor(new_sheet_path)
+        self._editor.open(new_sheet_path)
 
     def edit(self, sheet):
         """ Opens a cheatsheet for editing """
-        self._utils.open_with_editor(self.path(sheet))
+        self._editor.open(self.path(sheet))
 
     def exists(self, sheet):
         """ Predicate that returns true if the sheet exists """

cheat/utils.py

@@ -68,26 +68,6 @@ class Utils:
         Utils.warn(message)
         exit(1)
 
-    def editor(self):
-        """ Determines the user's preferred editor """
-
-        # assert that the editor is set
-        if (not self._config.cheat_editor):
-            Utils.die(
-                'You must set a CHEAT_EDITOR, VISUAL, or EDITOR environment '
-                'variable or setting in order to create/edit a cheatsheet.'
-            )
-
-        return self._config.cheat_editor
-
-    def open_with_editor(self, filepath):
-        """ Open `filepath` using the EDITOR specified by the env variables """
-        editor_cmd = self.editor().split()
-        try:
-            subprocess.call(editor_cmd + [filepath])
-        except OSError:
-            Utils.die('Could not launch ' + self.editor())
-
     @staticmethod
     def warn(message):
         """ Prints a message to stderr """