sdm660-common: Add unpinning support to update-sha1sums.py script

Change-Id: I9035b449cea6d78927a459dc247075b3d4512e46

update-sha1sums.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 #
 # Copyright (C) 2016 The CyanogenMod Project
-# Copyright (C) 2017 The LineageOS Project
+# Copyright (C) 2017-2018 The LineageOS Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -17,6 +17,7 @@
 #
 
 from hashlib import sha1
+import sys
 
 device='sdm660-common'
 vendor='xiaomi'
@@ -25,34 +26,54 @@
 vendorPath = '../../../vendor/' + vendor + '/' + device + '/proprietary'
 needSHA1 = False
 
-for index, line in enumerate(lines):
+def cleanup():
+  for index, line in enumerate(lines):
+    # Remove '\n' character
+    line = line[:-1]
+
+    # Skip empty or commented lines
+    if len(line) == 0 or line[0] == '#':
+      continue
+
+    # Drop SHA1 hash, if existing
+    if '|' in line:
+      line = line.split('|')[0]
+      lines[index] = '%s\n' % (line)
+
+def update():
+  for index, line in enumerate(lines):
     # Remove '\n' character
     line = line[:-1]
 
     # Skip empty lines
     if len(line) == 0:
-        continue
+      continue
 
     # Check if we need to set SHA1 hash for the next files
     if line[0] == '#':
-        needSHA1 = (' - from' in line)
-        continue
+      needSHA1 = (' - from' in line)
+      continue
 
     if needSHA1:
-        # Remove existing SHA1 hash
-        line = line.split('|')[0]
-        filePath = line.split(':')[1] if len(line.split(':')) == 2 else line
+      # Remove existing SHA1 hash
+      line = line.split('|')[0]
+      filePath = line.split(':')[1] if len(line.split(':')) == 2 else line
+
+      if filePath[0] == '-':
+        file = open('%s/%s' % (vendorPath, filePath[1:]), 'rb').read()
+      else:
+        file = open('%s/%s' % (vendorPath, filePath), 'rb').read()
 
-        if filePath[0] == '-':
-            file = open('%s/%s' % (vendorPath, filePath[1:]), 'rb').read()
-        else:
-            file = open('%s/%s' % (vendorPath, filePath), 'rb').read()
+      hash = sha1(file).hexdigest()
+      lines[index] = '%s|%s\n' % (line, hash)
 
-        hash = sha1(file).hexdigest()
-        lines[index] = '%s|%s\n' % (line, hash)
+if len(sys.argv) == 2 and sys.argv[1] == '-c':
+  cleanup()
+else:
+  update()
 
 with open('proprietary-files.txt', 'w') as file:
-    for line in lines:
-        file.write(line)
+  for line in lines:
+    file.write(line)
 
-    file.close()
+  file.close()