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path: root/contrib/libs/python/gen_includes.py
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import sys 
import os 
import errno 
from os import listdir 
from os.path import dirname, relpath, join
 

def ensure_dir_exists(path): 
    try: 
        os.makedirs(path) 
    except OSError as e: 
        if e.errno == errno.EEXIST and os.path.isdir(path): 
            pass 
        else: 
            raise 
 

def make_dir(directory): 
    if not os.path.exists(directory): 
        os.makedirs(directory) 
 

def files(directory):
    for dirpath, dirnames, filenames in os.walk(directory):
        for name in filenames:
            yield relpath(join(dirpath, name), directory)


def headers_set(directory): 
    return {
        f for f in files(directory)
        if f.endswith('.h') and not f.startswith('internal/')
    }
 

if __name__ == "__main__": 
 
    python2_path = sys.argv[1] 
    python3_path = sys.argv[2] 
    output_path = sys.argv[3] 
 
    ensure_dir_exists(join('.', python2_path)) 
    ensure_dir_exists(join('.', python3_path)) 
 
    only_headers2 = headers_set(python2_path)
    only_headers3 = headers_set(python3_path)
    all_headers = only_headers2 | only_headers3

    for header in all_headers:
        path = join(output_path, header)
        make_dir(dirname(path))
        f = open(path, 'w')
        f.write('#pragma once\n\n')
        f.write('#ifdef USE_PYTHON3\n')
        if (header in only_headers3):
            f.write('#include <' + join(python3_path, header) + '>\n')
        else:
            f.write('#error "No <' + header + '> in Python3"\n')
        f.write('#else\n')
        if (header in only_headers2):
            f.write('#include <' + join(python2_path, header) + '>\n')
        else:
            f.write('#error "No <' + header + '> in Python2"\n')
        f.write('#endif\n')