Al-Qurtas-Islamic-bank-The-.../builds/meson/process_ftoption_h.py

116 lines
3.3 KiB
Python

#!/usr/bin/env python
#
# Copyright (C) 2020-2021 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.
"""Toggle settings in `ftoption.h` file based on command-line arguments.
This script takes an `ftoption.h` file as input and rewrites
`#define`/`#undef` lines in it based on `--enable=CONFIG_VARNAME` or
`--disable=CONFIG_VARNAME` arguments passed to it, where `CONFIG_VARNAME` is
configuration variable name, such as `FT_CONFIG_OPTION_USE_LZW`, that may
appear in the file.
Note that if one of `CONFIG_VARNAME` is not found in the input file, this
script exits with an error message listing the missing variable names.
"""
import argparse
import os
import re
import sys
def main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument(
"input", metavar="FTOPTION_H", help="Path to input ftoption.h file."
)
parser.add_argument("--output", help="Output to file instead of stdout.")
parser.add_argument(
"--enable",
action="append",
default=[],
help="Enable a given build option (e.g. FT_CONFIG_OPTION_USE_LZW).",
)
parser.add_argument(
"--disable",
action="append",
default=[],
help="Disable a given build option.",
)
args = parser.parse_args()
common_options = set(args.enable) & set(args.disable)
if common_options:
parser.error(
"Options cannot be both enabled and disabled: %s"
% sorted(common_options)
)
return 1
with open(args.input) as f:
input_file = f.read()
options_seen = set()
new_lines = []
for line in input_file.splitlines():
# Expected formats:
# #define <CONFIG_VAR>
# /* #define <CONFIG_VAR> */
# #undef <CONFIG_VAR>
line = line.rstrip()
if line.startswith("/* #define ") and line.endswith(" */"):
option_name = line[11:-3].strip()
option_enabled = False
elif line.startswith("#define "):
option_name = line[8:].strip()
option_enabled = True
elif line.startswith("#undef "):
option_name = line[7:].strip()
option_enabled = False
else:
new_lines.append(line)
continue
options_seen.add(option_name)
if option_enabled and option_name in args.disable:
line = "#undef " + option_name
elif not option_enabled and option_name in args.enable:
line = "#define " + option_name
new_lines.append(line)
result = "\n".join(new_lines) + "\n"
# Sanity check that all command-line options were actually processed.
cmdline_options = set(args.enable) | set(args.disable)
assert cmdline_options.issubset(
options_seen
), "Could not find options in input file: " + ", ".join(
sorted(cmdline_options - options_seen)
)
if args.output:
with open(args.output, "w") as f:
f.write(result)
else:
print(result)
return 0
if __name__ == "__main__":
sys.exit(main())