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1#!/usr/bin/env python
2
3# Copyright 2015 Google Inc.
4#
5# Use of this source code is governed by a BSD-style license that can be
6# found in the LICENSE file.
7
8# This script will update Skia's dependencies as necessary and run
9# gyp if needed.
10
11# Depends on: Python, Git, and depot_tools.
12#
13# Example usage:
14#
15#   git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
16#   export PATH="${PWD}/depot_tools:${PATH}"
17#   git clone https://skia.googlesource.com/skia
18#   cd skia
19#   python bin/sync-and-gyp
20#   ninja -C out/Debug && out/Debug/dm
21#
22# Once changes are made to DEPS or gyp/ or the source, call:
23#
24#   python bin/sync-and-gyp
25
26# To retreive and use all optional deps:
27#
28#   python bin/sync-and-gyp --deps=all
29#   ninja -C out/Debug && out/Debug/dm
30
31import fnmatch
32import hashlib
33import os
34import subprocess
35import sys
36
37skia_dir = os.path.join(os.path.dirname(__file__), os.pardir)
38
39skia_opt_deps = [arg for arg in sys.argv[1:] if arg.startswith('--deps=')]
40
41skia_out = os.environ.get("SKIA_OUT")
42if skia_out:
43  skia_out = os.path.abspath(skia_out)
44  hash_path = os.path.join(skia_out, 'gyp_hash')
45else:
46  hash_path = os.path.join('out', 'gyp_hash')
47
48os.chdir(skia_dir)
49
50if not os.path.isfile('DEPS'):
51  sys.stderr.write('DEPS file missing')
52  exit(1)
53
54deps_hasher = hashlib.sha1()
55with open('DEPS', 'r') as f:
56  deps_hasher.update(f.read())
57deps_hasher.update(repr(skia_opt_deps))
58deps_hash = deps_hasher.hexdigest()
59current_deps_hash = None
60if os.path.isfile('.deps_sha1'):
61  with open('.deps_sha1', 'r') as f:
62    current_deps_hash = f.read().strip()
63
64default_gclient_config = '''
65solutions = [
66  { "name"        : ".",
67    "url"         : "https://skia.googlesource.com/skia.git",
68    "deps_file"   : "DEPS",
69    "managed"     : False,
70    "custom_deps" : {
71    },
72    "safesync_url": "",
73  },
74]
75cache_dir = None
76'''
77
78# Must use gclient.bat rather than gclient on windows (at least on mingw)
79gclient = 'gclient'
80if sys.platform == 'win32' or sys.platform == 'cygwin':
81  gclient = 'gclient.bat'
82
83if current_deps_hash != deps_hash:
84  # `gclient sync` is very slow, so skip whenever we can.
85  try:
86    subprocess.call([gclient, '--version'])
87  except:
88    sys.stdout.write('gclient missing from $PATH, please install ' +
89                     'depot_tools\n    https://skia.org/user/quick/desktop\n')
90    exit(1)
91  if not os.path.isfile('.gclient'):
92    with open('.gclient', 'w') as o:
93      o.write(default_gclient_config)
94  gclient_sync_command = [gclient, 'sync'] + skia_opt_deps
95  try:
96    sys.stdout.write('%r\n' % gclient_sync_command)
97    subprocess.check_call(gclient_sync_command)
98  except:
99    sys.stderr.write('\n`gclient sync` failed.\n')
100    try:
101      os.remove('.deps_sha1')  # Unknown state.
102    except:
103      pass
104    exit(1)
105  # Only write hash after a successful sync.
106  with open('.deps_sha1', 'w') as o:
107    o.write(deps_hash)
108
109hasher = hashlib.sha1()
110
111for var in ['AR', 'AR_host', 'AR_target',
112            'CC', 'CC_host', 'CC_target',
113            'CFLAGS', 'CFLAGS_host',
114            'CPPFLAGS', 'CPPFLAGS_host',
115            'CXX', 'CXX_host', 'CXX_target',
116            'GYP_DEFINES', 'GYP_GENERATORS',
117            'NM', 'NM_host', 'NM_target',
118            'READELF', 'READELF_host', 'READELF_target']:
119  hasher.update(os.environ.get(var, '') + '\n')
120
121def listfiles(folder, matchfilter):
122  for root, folders, files in os.walk(folder):
123    for filename in files:
124      if fnmatch.fnmatch(filename, matchfilter):
125        yield os.path.join(root, filename)
126
127for filename in sorted(listfiles('gyp', '*')):
128  with open(filename, 'r') as f:
129    hasher.update(f.read())
130
131for dir in ['bench', 'gm', 'tests']:
132  for filename in sorted(listfiles(dir, '*.c*')):
133    hasher.update(filename + '\n')
134
135gyp_hash = hasher.hexdigest()
136
137def cat_if_exists(path):
138  if os.path.exists(path):
139    with open(path, 'r') as f:
140      return f.read()
141  return ''
142
143if cat_if_exists(hash_path).strip() != gyp_hash:
144  env = os.environ.copy()
145  if skia_out:
146    env['SKIA_OUT'] = skia_out
147  subprocess.call(['python', './gyp_skia'], env=env)
148  with open(hash_path, 'w') as o:
149    o.write(gyp_hash)
150