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#!/usr/bin/env python3
#
# Copyright 2020 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.
import argparse
import os
import re
import sys
import zipfile
from util import build_utils
from util import java_cpp_utils
class FeatureParserDelegate(java_cpp_utils.CppConstantParser.Delegate):
# Ex. 'const base::Feature kConstantName{"StringNameOfTheFeature", ...};'
# would parse as:
# ExtractConstantName() -> 'ConstantName'
# ExtractValue() -> '"StringNameOfTheFeature"'
FEATURE_RE = re.compile(r'\s*const (?:base::)?Feature\s+k(\w+)\s*(?:=\s*)?{')
VALUE_RE = re.compile(r'\s*("(?:\"|[^"])*")\s*,')
def ExtractConstantName(self, line):
match = FeatureParserDelegate.FEATURE_RE.match(line)
return match.group(1) if match else None
def ExtractValue(self, line):
match = FeatureParserDelegate.VALUE_RE.search(line)
return match.group(1) if match else None
def CreateJavaConstant(self, name, value, comments):
return java_cpp_utils.JavaString(name, value, comments)
def _GenerateOutput(template, source_paths, template_path, features):
description_template = """
// This following string constants were inserted by
// {SCRIPT_NAME}
// From
// {SOURCE_PATHS}
// Into
// {TEMPLATE_PATH}
"""
values = {
'SCRIPT_NAME': java_cpp_utils.GetScriptName(),
'SOURCE_PATHS': ',\n // '.join(source_paths),
'TEMPLATE_PATH': template_path,
}
description = description_template.format(**values)
native_features = '\n\n'.join(x.Format() for x in features)
values = {
'NATIVE_FEATURES': description + native_features,
}
return template.format(**values)
def _ParseFeatureFile(path):
with open(path) as f:
feature_file_parser = java_cpp_utils.CppConstantParser(
FeatureParserDelegate(), f.readlines())
return feature_file_parser.Parse()
def _Generate(source_paths, template_path):
with open(template_path) as f:
lines = f.readlines()
template = ''.join(lines)
package, class_name = java_cpp_utils.ParseTemplateFile(lines)
output_path = java_cpp_utils.GetJavaFilePath(package, class_name)
features = []
for source_path in source_paths:
features.extend(_ParseFeatureFile(source_path))
output = _GenerateOutput(template, source_paths, template_path, features)
return output, output_path
def _Main(argv):
parser = argparse.ArgumentParser()
parser.add_argument('--srcjar',
required=True,
help='The path at which to generate the .srcjar file')
parser.add_argument('--template',
required=True,
help='The template file with which to generate the Java '
'class. Must have "{NATIVE_FEATURES}" somewhere in '
'the template.')
parser.add_argument('inputs',
nargs='+',
help='Input file(s)',
metavar='INPUTFILE')
args = parser.parse_args(argv)
with build_utils.AtomicOutput(args.srcjar) as f:
with zipfile.ZipFile(f, 'w', zipfile.ZIP_STORED) as srcjar:
data, path = _Generate(args.inputs, args.template)
build_utils.AddToZipHermetic(srcjar, path, data=data)
if __name__ == '__main__':
_Main(sys.argv[1:])
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