# 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/.


@imports(_from="__builtin__", _import="open")
@imports("os")
def get_nss_version():
    nss_version = [0, 0]
    topsrcdir = os.path.realpath(os.path.join(os.path.dirname(__file__), "..", ".."))
    with open(
        os.path.join(topsrcdir, "security", "nss", "lib", "nss", "nss.h"), "r"
    ) as f:
        for line in f:
            if "NSS_VMAJOR" in line:
                nss_version[0] = line.split()[-1]
            if "NSS_VMINOR" in line:
                nss_version[1] = line.split()[-1]
            if "NSS_VPATCH" in line:
                patch = line.split()[-1]
                if patch != "0":
                    nss_version.append(line.split()[-1])
    return ".".join(nss_version)


system_lib_option(
    "--with-system-nss",
    help="Use system NSS",
    when=use_pkg_config,
)

imply_option("--with-system-nspr", True, when="--with-system-nss")

nss_pkg = pkg_check_modules(
    "NSS", "nss >= " + get_nss_version(), when="--with-system-nss", config=False
)

set_config("MOZ_SYSTEM_NSS", True, when="--with-system-nss")


@depends(nss_pkg, build_environment)
def nss_config(nss_pkg, build_env):
    cflags = ["-I%s" % os.path.join(build_env.dist, "include", "nss")]
    libs = None
    if nss_pkg:
        cflags = list(nss_pkg.cflags) + cflags
        libs = nss_pkg.libs
    return namespace(cflags=cflags, libs=libs)


set_config("NSS_CFLAGS", nss_config.cflags)
set_config("NSS_LIBS", nss_config.libs)

# Used specifically by Thunderbird
project_flag(
    env="NSS_EXTRA_SYMBOLS_FILE",
    nargs=1,
    help="Path to a file containing extra symbols to export from NSS",
)