111 lines
3.1 KiB
Python
111 lines
3.1 KiB
Python
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#!/usr/bin/env python
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#
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# Copyright 2013 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Creates a TOC file from a Java jar.
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The TOC file contains the non-package API of the jar. This includes all
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public/protected classes/functions/members and the values of static final
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variables. Some other information (major/minor javac version) is also included.
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This TOC file then can be used to determine if a dependent library should be
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rebuilt when this jar changes. I.e. any change to the jar that would require a
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rebuild, will have a corresponding change in the TOC file.
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"""
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import optparse
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import os
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import re
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import sys
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import zipfile
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from util import build_utils
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from util import md5_check
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def GetClassesInZipFile(zip_file):
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classes = []
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files = zip_file.namelist()
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for f in files:
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if f.endswith('.class'):
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# f is of the form org/chromium/base/Class$Inner.class
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classes.append(f.replace('/', '.')[:-6])
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return classes
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def CallJavap(classpath, classes):
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javap_cmd = [
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'javap',
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'-protected', # In reality both public & protected.
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# -verbose is required to get constant values (which can be inlined in
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# dependents).
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'-verbose',
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'-classpath', classpath
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] + classes
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return build_utils.CheckCallDie(javap_cmd, suppress_output=True)
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def ExtractToc(disassembled_classes):
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# javap output is structured by indent (2-space) levels.
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good_patterns = [
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'^[^ ]', # This includes all class/function/member signatures.
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'^ SourceFile:',
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'^ minor version:',
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'^ major version:',
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'^ Constant value:',
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]
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bad_patterns = [
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'^const #', # Matches the constant pool (i.e. literals used in the class).
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]
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def JavapFilter(line):
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return (re.match('|'.join(good_patterns), line) and
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not re.match('|'.join(bad_patterns), line))
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toc = filter(JavapFilter, disassembled_classes.split('\n'))
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return '\n'.join(toc)
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def UpdateToc(jar_path, toc_path):
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classes = GetClassesInZipFile(zipfile.ZipFile(jar_path))
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javap_output = CallJavap(classpath=jar_path, classes=classes)
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toc = ExtractToc(javap_output)
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with open(toc_path, 'w') as tocfile:
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tocfile.write(toc)
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def DoJarToc(options):
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jar_path = options.jar_path
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toc_path = options.toc_path
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record_path = '%s.md5.stamp' % toc_path
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md5_check.CallAndRecordIfStale(
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lambda: UpdateToc(jar_path, toc_path),
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record_path=record_path,
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input_paths=[jar_path],
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)
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build_utils.Touch(toc_path)
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def main(argv):
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parser = optparse.OptionParser()
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parser.add_option('--jar-path', help='Input .jar path.')
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parser.add_option('--toc-path', help='Output .jar.TOC path.')
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parser.add_option('--stamp', help='Path to touch on success.')
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# TODO(newt): remove this once http://crbug.com/177552 is fixed in ninja.
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parser.add_option('--ignore', help='Ignored.')
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options, _ = parser.parse_args()
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DoJarToc(options)
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if options.stamp:
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build_utils.Touch(options.stamp)
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if __name__ == '__main__':
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sys.exit(main(sys.argv))
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