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61 lines
2.2 KiB
Python
61 lines
2.2 KiB
Python
""" Generates a single header file from a file including multiple C/C++ headers.
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Contributed by Sorin Fetche
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Usage:
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python3 generate_single_header.py --help
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e.g. python3 generate_single_header.py -i boost/leaf/all.hpp -o leaf_all.hpp boost/leaf
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Note:
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If unit tests are build by meson, you can enable the 'build_all_hpp' option (see meson_options.txt),
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in which case each time the tests are built, first all.hpp will be rebuilt (no dependency checks).
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"""
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import argparse
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import os
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import re
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included = []
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def append(input_file_name, input_file, output_file, regex_includes, include_folder):
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line_count = 1
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for line in input_file:
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result = regex_includes.search(line)
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line_count += 1
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if result:
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next_input_file_name = result.group("include")
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if next_input_file_name not in included:
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included.append(next_input_file_name)
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print("%s" % next_input_file_name, flush=True)
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with open(os.path.join(include_folder, next_input_file_name), "r") as next_input_file:
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output_file.write('// >>> %s#line 1 "%s"\n' % (line, next_input_file_name))
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append(next_input_file_name, next_input_file, output_file, regex_includes, include_folder)
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output_file.write('// <<< %s#line %d "%s"\n' % (line, line_count, input_file_name))
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else:
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output_file.write(line)
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def _main():
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parser = argparse.ArgumentParser(
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description="Generates a single include file from a file including multiple C/C++ headers")
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parser.add_argument("-i", "--input", action="store", type=str, default="in.cpp",
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help="Input file including the headers to be merged")
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parser.add_argument("-o", "--output", action="store", type=str, default="out.cpp",
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help="Output file. NOTE: It will be overwritten!")
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parser.add_argument("-p", "--path", action="store", type=str, default=".",
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help="Include path")
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parser.add_argument("prefix", action="store", type=str,
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help="Non-empty include file prefix (e.g. a/b)")
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args = parser.parse_args()
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regex_includes = re.compile(r"""^\s*#[\t\s]*include[\t\s]*("|\<)(?P<include>%s.*)("|\>)""" % args.prefix)
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print("Rebuilding %s:" % args.input)
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with open(args.output, 'w') as output_file, open(args.input, 'r') as input_file:
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append(args.input, input_file, output_file, regex_includes, args.path)
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if __name__ == "__main__":
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_main()
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