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# Copyright (C) 2013 Google Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import os.path
import shlex
import shutil
import optparse
from in_file import InFile
class Writer(object):
# Subclasses should override.
class_name = None
defaults = None
valid_values = None
default_parameters = None
def __init__(self, in_files):
if isinstance(in_files, basestring):
in_files = [in_files]
if in_files:
self.in_file = InFile.load_from_files(in_files, self.defaults, self.valid_values, self.default_parameters)
else:
self.in_file = None
self._outputs = {} # file_name -> generator
def wrap_with_condition(self, string, condition):
if not condition:
return string
return "#if ENABLE(%(condition)s)\n%(string)s\n#endif" % { 'condition' : condition, 'string' : string }
def _write_file_if_changed(self, output_dir, contents, file_name):
path = os.path.join(output_dir, file_name)
# The build system should ensure our output directory exists, but just in case.
directory = os.path.dirname(path)
if not os.path.exists(directory):
os.makedirs(directory)
# Only write the file if the contents have changed. This allows ninja to
# skip rebuilding targets which depend on the output.
with open(path, "a+") as output_file:
output_file.seek(0)
if output_file.read() != contents:
output_file.truncate(0)
output_file.write(contents)
def write_files(self, output_dir):
for file_name, generator in self._outputs.items():
self._write_file_if_changed(output_dir, generator(), file_name)
def set_gperf_path(self, gperf_path):
self.gperf_path = gperf_path
class Maker(object):
def __init__(self, writer_class):
self._writer_class = writer_class
def main(self, argv):
script_name = os.path.basename(argv[0])
args = argv[1:]
if len(args) < 1:
print "USAGE: %s INPUT_FILES" % script_name
exit(1)
parser = optparse.OptionParser()
parser.add_option("--gperf", default="gperf")
parser.add_option("--output_dir", default=os.getcwd())
options, args = parser.parse_args()
writer = self._writer_class(args)
writer.set_gperf_path(options.gperf)
writer.write_files(options.output_dir)
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