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      1 #!/usr/bin/env python
      2 
      3 import argparse
      4 import logging
      5 import os
      6 import re
      7 import shutil
      8 from genmakefiles import GenerateMakefiles
      9 
     10 AOSP_PATH = os.getcwd()
     11 UNWANTED_DIRS = [
     12   'build/',
     13   'test/',
     14   'third_party/',
     15   'buildtools/',
     16   'tools/gyp',
     17   'tools/swarming_client'
     18 ]
     19 
     20 parser = argparse.ArgumentParser(description='Merge a new version of V8.')
     21 parser.add_argument('--v8_path', \
     22   required=True, help='Absolute path to the new version of V8 to be merged.')
     23 args = parser.parse_args()
     24 
     25 # Find all the files that are in both the old and the new repo; remove them
     26 # (ie. leave the Android-only files in place)
     27 new_files = [f for f in os.listdir(args.v8_path) if not f.startswith(".")]
     28 current_files = [f for f in os.listdir(AOSP_PATH) if not f.startswith(".")]
     29 to_remove = [f for f in current_files if f in new_files]
     30 
     31 for file in to_remove:
     32   path = os.path.join(AOSP_PATH, file)
     33   if os.path.isfile(path):
     34     os.remove(path)
     35   else:
     36     shutil.rmtree(path)
     37 
     38 # Copy accross the new files.
     39 all_new_v8 = os.path.join(args.v8_path, "*")
     40 rsync_cmd = "rsync -r --exclude=\"*.git*\" " + all_new_v8 + \
     41   " . > /dev/null"
     42 if os.system(rsync_cmd) != 0:
     43   raise RuntimeError("Could not rsync the new V8.")
     44 
     45 # Now remove extra stuff that AOSP doesn't want (to save space)
     46 for file in UNWANTED_DIRS:
     47   path = os.path.join(AOSP_PATH, file)
     48   shutil.rmtree(path)
     49 
     50 # Create new makefiles
     51 GenerateMakefiles()
     52 
     53 # Update V8_MERGE_REVISION
     54 major_version = 0
     55 minor_version = 0
     56 build_number = 0
     57 patch_level = 0
     58 
     59 success = True
     60 with open(os.path.join(AOSP_PATH, "include/v8-version.h"), 'r') as f:
     61   content = f.read()
     62   result = re.search("V8_MAJOR_VERSION (\\d*)", content)
     63   if result != None:
     64     major_version = result.group(1)
     65   else:
     66     success = False
     67   result = re.search("V8_MINOR_VERSION (\\d*)", content)
     68   if result != None:
     69     minor_version = result.group(1)
     70   else:
     71     success = False
     72   result = re.search("V8_BUILD_NUMBER (\\d*)", content)
     73   if result != None:
     74     build_number = result.group(1)
     75   else:
     76     success = False
     77   result = re.search("V8_PATCH_LEVEL (\\d*)", content)
     78   if result != None:
     79     patch_level = result.group(1)
     80   else:
     81     success = False
     82 
     83 version_string = major_version + "." + \
     84   minor_version + "." + \
     85   build_number + "." + \
     86   patch_level
     87 
     88 if not success:
     89   logging.warning("Couldn't extract V8 version to update V8_MERGE_REVISION." + \
     90      " Got " + version_string)
     91 else:
     92   with open(os.path.join(AOSP_PATH, "V8_MERGE_REVISION"), 'w') as f:
     93     f.write("v8 " + version_string + "\n")
     94     f.write("https://chromium.googlesource.com/v8/v8/+/" + version_string)
     95 
     96   # Done!
     97   print "Merged V8 " + version_string + ". Test, commit and upload!"