diff options
Diffstat (limited to 'Build/source/libs/freetype2/freetype-src/builds/meson/process_ftoption_h.py')
-rw-r--r-- | Build/source/libs/freetype2/freetype-src/builds/meson/process_ftoption_h.py | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/Build/source/libs/freetype2/freetype-src/builds/meson/process_ftoption_h.py b/Build/source/libs/freetype2/freetype-src/builds/meson/process_ftoption_h.py new file mode 100644 index 00000000000..b5f80c3142c --- /dev/null +++ b/Build/source/libs/freetype2/freetype-src/builds/meson/process_ftoption_h.py @@ -0,0 +1,105 @@ +#!/usr/bin/python +"""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) + + # 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()) |