blob: 66b5bc85581ecd2b8cf22601b9478708e1f8f42d [file] [log] [blame]
#!/usr/bin/env python3
#
# Copyright (C) 2020-2022 by
# David Turner, Robert Wilhelm, and Werner Lemberg.
#
# This file is part of the FreeType project, and may only be used, modified,
# and distributed under the terms of the FreeType project license,
# LICENSE.TXT. By continuing to use, modify, or distribute this file you
# indicate that you have read the license and understand and accept it
# fully.
"""Extract the FreeType version numbers from `<freetype/freetype.h>`.
This script parses the header to extract the version number defined there.
By default, the full dotted version number is printed, but `--major`,
`--minor` or `--patch` can be used to only print one of these values
instead.
"""
from __future__ import print_function
import argparse
import os
import re
import sys
# Expected input:
#
# ...
# #define FREETYPE_MAJOR 2
# #define FREETYPE_MINOR 10
# #define FREETYPE_PATCH 2
# ...
RE_MAJOR = re.compile(r"^ \#define \s+ FREETYPE_MAJOR \s+ (.*) $", re.X)
RE_MINOR = re.compile(r"^ \#define \s+ FREETYPE_MINOR \s+ (.*) $", re.X)
RE_PATCH = re.compile(r"^ \#define \s+ FREETYPE_PATCH \s+ (.*) $", re.X)
def parse_freetype_header(header):
major = None
minor = None
patch = None
for line in header.splitlines():
line = line.rstrip()
m = RE_MAJOR.match(line)
if m:
assert major == None, "FREETYPE_MAJOR appears more than once!"
major = m.group(1)
continue
m = RE_MINOR.match(line)
if m:
assert minor == None, "FREETYPE_MINOR appears more than once!"
minor = m.group(1)
continue
m = RE_PATCH.match(line)
if m:
assert patch == None, "FREETYPE_PATCH appears more than once!"
patch = m.group(1)
continue
assert (
major and minor and patch
), "This header is missing one of FREETYPE_MAJOR, FREETYPE_MINOR or FREETYPE_PATCH!"
return (major, minor, patch)
def main():
parser = argparse.ArgumentParser(description=__doc__)
group = parser.add_mutually_exclusive_group()
group.add_argument(
"--major",
action="store_true",
help="Only print the major version number.",
)
group.add_argument(
"--minor",
action="store_true",
help="Only print the minor version number.",
)
group.add_argument(
"--patch",
action="store_true",
help="Only print the patch version number.",
)
parser.add_argument(
"input",
metavar="FREETYPE_H",
help="The input freetype.h header to parse.",
)
args = parser.parse_args()
with open(args.input) as f:
header = f.read()
version = parse_freetype_header(header)
if args.major:
print(version[0])
elif args.minor:
print(version[1])
elif args.patch:
print(version[2])
else:
print("%s.%s.%s" % version)
return 0
if __name__ == "__main__":
sys.exit(main())