# 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
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
import argparse
import os
import re
import sys
import mozpack.path
as mozpath
from buildconfig
import topobjdir, topsrcdir
from mozbuild.backend.configenvironment
import PartialConfigEnvironment
def process_define_file(output, input):
"""Creates the given config header. A config header is generated by
taking the corresponding source file
and replacing some *
#define/#undef*
occurences:
-
"#undef 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 */"
- Whitespaces are preserved.
As a special rule,
"#undef ALLDEFINES" is turned into "#define NAME
VALUE
" for all the defined variables.
"""
path = os.path.abspath(input)
config = PartialConfigEnvironment(topobjdir)
if mozpath.basedir(
path, [mozpath.join(topsrcdir,
"js/src")]
)
and not config.substs.get(
"JS_STANDALONE"):
config = PartialConfigEnvironment(mozpath.join(topobjdir,
"js",
"src"))
with open(path,
"r")
as input:
r = re.compile(
r
"^\s*#\s*(?P[a-z]+)(?:\s+(?P\S+)(?:\s+(?P\S+))?)?", re.U
)
for l
in input:
m = r.match(l)
if m:
cmd = m.group(
"cmd")
name = m.group(
"name")
value = m.group(
"value")
if name:
if name ==
"ALLDEFINES":
if cmd ==
"define":
raise Exception(
"`#define ALLDEFINES` is not allowed in a "
"CONFIGURE_DEFINE_FILE"
)
def define_for_name(name, val):
"""WebRTC files like to define WINVER and _WIN32_WINNT
via the command line, which raises a mass of macro
redefinition warnings. Just handle those macros
specially here.
"""
define =
"#define {name} {val}".format(name=name, val=val)
if name
in (
"_WIN32_IE",
"_WIN32_WINNT",
"WIN32",
"WINVER"):
return "#if !defined({name})\n{define}\n#endif".format(
name=name, define=define
)
return define
defines =
"\n".join(
sorted(
define_for_name(name, val)
for name, val
in config.defines[
"ALLDEFINES"].items()
)
)
l = l[: m.start(
"cmd") - 1] + defines + l[m.end(
"name") :]
elif cmd ==
"define":
if value
and name
in config.defines:
l = (
l[: m.start(
"value")]
+ str(config.defines[name])
+ l[m.end(
"value") :]
)
elif cmd ==
"undef":
if name
in config.defines:
l = (
l[: m.start(
"cmd")]
+
"define"
+ l[m.end(
"cmd") : m.end(
"name")]
+
" "
+ str(config.defines[name])
+ l[m.end(
"name") :]
)
else:
l =
"/* " + l[: m.end(
"name")] +
" */" + l[m.end(
"name") :]
output.write(l)
deps = {path}
deps.update(config.get_dependencies())
return deps
def main(argv):
parser = argparse.ArgumentParser(description=
"Process define files.")
parser.add_argument(
"input", help=
"Input define file.")
args = parser.parse_args(argv)
return process_define_file(sys.stdout, args.input)
if __name__ ==
"__main__":
sys.exit(main(sys.argv[1:]))
