mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-22 21:36:12 +03:00
98 lines
3.2 KiB
Python
98 lines
3.2 KiB
Python
|
#!/usr/bin/env python3
|
||
|
|
# Copyright 2015 The Chromium Authors
|
||
|
|
# Use of this source code is governed by a BSD-style license that can be
|
||
|
|
# found in the LICENSE file.
|
||
|
|
|
||
|
|
# This writes headers for build flags. See buildflag_header.gni for usage of
|
||
|
|
# this system as a whole.
|
||
|
|
#
|
||
|
|
# The parameters are passed in a response file so we don't have to worry
|
||
|
|
# about command line lengths. The name of the response file is passed on the
|
||
|
|
# command line.
|
||
|
|
#
|
||
|
|
# The format of the response file is:
|
||
|
|
# [--flags <list of one or more flag values>]
|
||
|
|
|
||
|
|
import optparse
|
||
|
|
import os
|
||
|
|
import re
|
||
|
|
import shlex
|
||
|
|
|
||
|
|
|
||
|
|
class Options:
|
||
|
|
def __init__(self, output, rulename, header_guard, flags):
|
||
|
|
self.output = output
|
||
|
|
self.rulename = rulename
|
||
|
|
self.header_guard = header_guard
|
||
|
|
self.flags = flags
|
||
|
|
|
||
|
|
|
||
|
|
def GetOptions():
|
||
|
|
parser = optparse.OptionParser()
|
||
|
|
parser.add_option('--output', help="Output header name inside --gen-dir.")
|
||
|
|
parser.add_option('--rulename',
|
||
|
|
help="Helpful name of build rule for including in the " +
|
||
|
|
"comment at the top of the file.")
|
||
|
|
parser.add_option('--gen-dir',
|
||
|
|
help="Path to root of generated file directory tree.")
|
||
|
|
parser.add_option('--definitions',
|
||
|
|
help="Name of the response file containing the flags.")
|
||
|
|
cmdline_options, cmdline_flags = parser.parse_args()
|
||
|
|
|
||
|
|
# Compute a valid C++ header guard by replacing non valid chars with '_',
|
||
|
|
# upper-casing everything and prepending '_' if first symbol is digit.
|
||
|
|
header_guard = cmdline_options.output.upper()
|
||
|
|
if header_guard[0].isdigit():
|
||
|
|
header_guard = '_' + header_guard
|
||
|
|
header_guard = re.sub('[^\w]', '_', header_guard)
|
||
|
|
header_guard += '_'
|
||
|
|
|
||
|
|
# The actual output file is inside the gen dir.
|
||
|
|
output = os.path.join(cmdline_options.gen_dir, cmdline_options.output)
|
||
|
|
|
||
|
|
# Definition file in GYP is newline separated, in GN they are shell formatted.
|
||
|
|
# shlex can parse both of these.
|
||
|
|
with open(cmdline_options.definitions, 'r') as def_file:
|
||
|
|
defs = shlex.split(def_file.read())
|
||
|
|
flags_index = defs.index('--flags')
|
||
|
|
|
||
|
|
# Everything after --flags are flags. true/false are remapped to 1/0,
|
||
|
|
# everything else is passed through.
|
||
|
|
flags = []
|
||
|
|
for flag in defs[flags_index + 1 :]:
|
||
|
|
equals_index = flag.index('=')
|
||
|
|
key = flag[:equals_index]
|
||
|
|
value = flag[equals_index + 1:]
|
||
|
|
|
||
|
|
# Canonicalize and validate the value.
|
||
|
|
if value == 'true':
|
||
|
|
value = '1'
|
||
|
|
elif value == 'false':
|
||
|
|
value = '0'
|
||
|
|
flags.append((key, str(value)))
|
||
|
|
|
||
|
|
return Options(output=output,
|
||
|
|
rulename=cmdline_options.rulename,
|
||
|
|
header_guard=header_guard,
|
||
|
|
flags=flags)
|
||
|
|
|
||
|
|
|
||
|
|
def WriteHeader(options):
|
||
|
|
with open(options.output, 'w') as output_file:
|
||
|
|
output_file.write("// Generated by build/write_buildflag_header.py\n")
|
||
|
|
if options.rulename:
|
||
|
|
output_file.write('// From "' + options.rulename + '"\n')
|
||
|
|
|
||
|
|
output_file.write('\n#ifndef %s\n' % options.header_guard)
|
||
|
|
output_file.write('#define %s\n\n' % options.header_guard)
|
||
|
|
output_file.write('#include "build/buildflag.h" // IWYU pragma: export\n\n')
|
||
|
|
|
||
|
|
for pair in options.flags:
|
||
|
|
output_file.write('#define BUILDFLAG_INTERNAL_%s() (%s)\n' % pair)
|
||
|
|
|
||
|
|
output_file.write('\n#endif // %s\n' % options.header_guard)
|
||
|
|
|
||
|
|
|
||
|
|
options = GetOptions()
|
||
|
|
WriteHeader(options)
|