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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
import argparse
import os
import re
import sys
from buildconfig import topobjdir
from mozbuild.backend.configenvironment import PartialConfigEnvironment
def define_type(string):
vals = string.split("=", 1)
if len(vals) == 1:
vals.append(1)
elif vals[1].isdecimal():
vals[1] = int(vals[1])
return tuple(vals)
def process_cmake_define_file(output, input_file, extra_defines):
"""Creates the given config header. A config header is generated by
taking the corresponding source file and replacing some #define/#undef
occurrences:
"#undef NAME" is turned into "#define NAME VALUE"
"#cmakedefine NAME" is turned into "#define NAME VALUE"
"#define NAME" is unchanged
"#define NAME ORIGINAL_VALUE" is turned into "#define NAME VALUE"
"#undef UNKNOWN_NAME" is turned into "/* #undef UNKNOWN_NAME */"
"#define UNKNOWN_NAME" is turned into "/* #undef UNKNOWN_NAME */"
"#cmakedefine UNKNOWN_NAME" is turned into "/* #undef UNKNOWN_NAME */"
Whitespaces are preserved.
"""
path = os.path.abspath(input_file)
config = PartialConfigEnvironment(topobjdir)
defines = dict(config.defines.iteritems())
defines.update(extra_defines)
with open(path, "r") as input_file:
r = re.compile(
r'^\s*#\s*(?P<cmd>[a-z]+)(?:\s+(?P<name>\S+)(?:\s+(?P<value>("[^"]+"|\S+)))?)?',
re.U,
)
for line in input_file:
m = r.match(line)
if m:
cmd = m.group("cmd")
name = m.group("name")
value = m.group("value")
if name:
if cmd == "define":
if value and name in defines:
line = (
line[: m.start("value")]
+ str(defines[name])
+ line[m.end("value") :]
)
elif name not in defines:
line = (
"/* #undef "
+ line[m.start("name") : m.end("name")]
+ " */"
+ line[m.end("name") :]
)
elif cmd in ("undef", "cmakedefine"):
if name in defines:
line = (
line[: m.start("cmd")]
+ "define"
+ line[m.end("cmd") : m.end("name")]
+ " "
+ str(defines[name])
+ line[m.end("name") :]
)
else:
line = (
"/* #undef "
+ line[m.start("name") : m.end("name")]
+ " */"
+ line[m.end("name") :]
)
line = re.sub(r' *"?@.*@"?$', "", line)
output.write(line)
def main(output, *argv):
parser = argparse.ArgumentParser(description="Process define files.")
parser.add_argument("input", help="Input define file.")
parser.add_argument(
"-D",
type=define_type,
action="append",
dest="extra_defines",
default=[],
help="Additional defines not set at configure time.",
)
args = parser.parse_args(argv)
return process_cmake_define_file(output, args.input, args.extra_defines)
if __name__ == "__main__":
sys.exit(main(*sys.argv))