From 3942fc27c487b75cdc8db58d5371a17a5fe070fe Mon Sep 17 00:00:00 2001
From: Elliot Nunn <elliotnunn@me.com>
Date: Fri, 18 Oct 2019 10:06:51 +0800
Subject: [PATCH] Cfmtool to write only changed files

Mostly to spare my iCloud Drive! XD
---
 cfmtool.py | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/cfmtool.py b/cfmtool.py
index 50d26a6..a0ec400 100755
--- a/cfmtool.py
+++ b/cfmtool.py
@@ -978,8 +978,15 @@ def write_txt(txt, *path_parts):
 def write_bin(bin, *path_parts):
     path_parts = path.join(*path_parts)
     os.makedirs(path.dirname(path_parts), exist_ok=True)
-    with open(path_parts, 'wb') as f:
-        f.write(bin)
+
+    # Write only if changed (slightly hacky)
+    try:
+        if path.getsize(path_parts) != len(bin): raise Exception
+        with open(path_parts, 'rb') as f:
+            if f.read() != bin: raise Exception
+    except:
+        with open(path_parts, 'wb') as f:
+            f.write(bin)
 
 
 if __name__ == '__main__':