utils.py - Issue 29350244: Issue 4374 - Made Python code part of jshydra comply with our coding practices

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Delta Between Two Patch Sets: utils.py

Issue 29350244: Issue 4374 - Made Python code part of jshydra comply with our coding practices (Closed)

Left Patch Set: Created Aug. 28, 2016, 10:42 p.m.

Right Patch Set: Rebased and fixed typo Created Aug. 30, 2016, 12:01 p.m.

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1 # This Source Code is subject to the terms of the Mozilla Public License

2 # version 2.0 (the "License"). You can obtain a copy of the License at

3 # http://mozilla.org/MPL/2.0/.

4

5 import os

6 import platform

7 import io

8 import zipfile

9

10 try:

11 from urllib.request import urlopen

12 except ImportError:

13 import urllib

14 import contextlib

15

16 def urlopen(args, *kwargs):

17 return contextlib.closing(urllib.urlopen(args, *kwargs))

18

19 JSSHELL_DIR = 'mozilla-esr31'

20 JSSHELL_URL = ('https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly'

21 '/2015/02/2015-02-25-00-22-19-{}'

22 '/jsshell-{{}}.zip'.format(JSSHELL_DIR))

23

24 JSSHELL_SUPPORTED_PLATFORMS = {

25 'Windows': 'win32',

26 'Linux': {

27 'i686': 'linux-i686',

28 'x86_64': 'linux-x86_64'

29 },

30 'Darwin': 'mac'

31 }

32

33

34 def ensure_jsshell():

35 path = os.environ.get('SPIDERMONKEY_BINARY')

36 if path and os.path.isfile(path):

37 return path

38

39 system = platform.system()

40 try:

41 build = JSSHELL_SUPPORTED_PLATFORMS[system]

42 if isinstance(build, dict):

43 build = build[platform.machine()]

44 except KeyError:

45 raise Exception('Platform {} ({}) not supported by JS shell'.format(

46 system, platform.machine()

47 ))

48

49 shell_dir = os.path.join(os.path.dirname(__file__),

50 '{}-{}'.format(JSSHELL_DIR, build))

51 if not os.path.exists(shell_dir):

52 os.makedirs(shell_dir)

53 if system == 'Windows':

54 path = os.path.join(shell_dir, 'js.exe')

55 else:

56 path = os.path.join(shell_dir, 'js')

57

58 if os.path.exists(path):

59 return path

60

61 with urlopen(JSSHELL_URL.format(build)) as response:

62 data = response.read()

63

64 with zipfile.ZipFile(io.BytesIO(data)) as archive:

65 archive.extractall(shell_dir)

66

67 if not os.path.exists(path):

68 raise Exception("Downloaded package doesn't contain JS shell")

69

70 try:

71 os.chmod(path, 0o700)

72 except:

73 pass

74

75 return path

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