1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
#!/usr/bin/python
# Copyright 2015 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Runs Closure compiler on JavaScript files to check for errors and produce
minified output."""
import os
import subprocess
_CURRENT_DIR = os.path.join(os.path.dirname(__file__))
_JAVA_BIN = "java"
_JDK_PATH = os.path.join(_CURRENT_DIR, "..", "jdk", "current", "bin", _JAVA_BIN)
_JAVA_PATH = _JDK_PATH if os.path.isfile(_JDK_PATH) else _JAVA_BIN
class Compiler(object):
"""Runs the Closure compiler on given source files to typecheck them
and produce minified output."""
_JAR_COMMAND = [
_JAVA_PATH,
"-jar",
"-Xms1024m",
"-client",
"-XX:+TieredCompilation",
]
def __init__(self, verbose=False):
"""
Args:
verbose: Whether this class should output diagnostic messages.
"""
self._compiler_jar = os.path.join(_CURRENT_DIR, "compiler", "compiler.jar")
self._verbose = verbose
def _log_debug(self, msg, error=False):
"""Logs |msg| to stdout if --verbose/-v is passed when invoking this script.
Args:
msg: A debug message to log.
"""
if self._verbose:
print "(INFO) %s" % msg
def run_jar(self, jar, args):
"""Runs a .jar from the command line with arguments.
Args:
jar: A file path to a .jar file
args: A list of command line arguments to be passed when running the .jar.
Return:
(exit_code, stderr) The exit code of the command (e.g. 0 for success) and
the stderr collected while running |jar| (as a string).
"""
shell_command = " ".join(self._JAR_COMMAND + [jar] + args)
self._log_debug("Running jar: %s" % shell_command)
devnull = open(os.devnull, "w")
kwargs = {"stdout": devnull, "stderr": subprocess.PIPE, "shell": True}
process = subprocess.Popen(shell_command, **kwargs)
_, stderr = process.communicate()
return process.returncode, stderr
|
