From 6a4ad31125981efec78189d0f11f6c6bf89b7114 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ed=C3=AAnis=20Freindorfer=20Azevedo?= <edenisfa@gmail.com>
Date: Thu, 18 Apr 2019 21:19:03 -0300
Subject: [PATCH] Add support for the XDG Base Directory Specification.

---
 grip/app.py      | 9 +++++++--
 grip/settings.py | 5 ++++-
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/grip/app.py b/grip/app.py
index 137ac4d..e065f69 100644
--- a/grip/app.py
+++ b/grip/app.py
@@ -63,7 +63,10 @@ def __init__(self, source=None, auth=None, renderer=None,
         if instance_path is None:
             instance_path = os.environ.get('GRIPHOME')
             if instance_path is None:
-                instance_path = DEFAULT_GRIPHOME
+                instance_path = os.path.expanduser(DEFAULT_GRIPHOME)
+                if not os.path.exists(instance_path):
+                    instance_path = os.environ.get('XDG_CONFIG_HOME', '~/.config')
+                    instance_path = os.path.join(instance_path, 'grip')
         instance_path = os.path.abspath(os.path.expanduser(instance_path))
 
         # Flask application
@@ -353,7 +356,9 @@ def default_asset_manager(self):
         cache_directory = self.config['CACHE_DIRECTORY']
         if cache_directory:
             cache_directory = cache_directory.format(version=__version__)
-            cache_path = os.path.join(self.instance_path, cache_directory)
+            cache_path = os.environ.get('XDG_CACHE_HOME', '~/.cache')
+            cache_path = os.path.abspath(os.path.expanduser(cache_path))
+            cache_path = os.path.join(cache_path, 'grip', cache_directory)
         return GitHubAssetManager(
             cache_path, self.config['STYLE_URLS'], self.quiet)
 
diff --git a/grip/settings.py b/grip/settings.py
index 7d8ba08..0a6e2bb 100644
--- a/grip/settings.py
+++ b/grip/settings.py
@@ -3,7 +3,10 @@
 
 Do NOT change the values here for risk of accidentally committing them.
 Override them using command-line arguments or with a settings_local.py in
-this directory or in ~/.grip/settings.py instead.
+this directory or in one of the following (in order of precedence):
+ 1. "${GRIPHOME}/settings.py" (if GRIPHOME is set)
+ 2. "~/.grip/settings.py" (if "~/.grip" exists)
+ 3. "${XDG_CONFIG_HOME:-~/.config}/grip/settings.py" (fallback)
 """