cpython/Python/freeze_importlib.py

41 lines
1.2 KiB
Python

#! /usr/bin/env python
"""Freeze importlib for use as the implementation of import."""
import marshal
header = """/* Auto-generated by Python/freeze_importlib.py */"""
def main(input_path, output_path):
with open(input_path, 'r', encoding='utf-8') as input_file:
source = input_file.read()
code = compile(source, '<frozen importlib._bootstrap>', 'exec')
lines = [header]
lines.append('unsigned char _Py_M__importlib[] = {')
data = marshal.dumps(code)
# Code from Tools/freeze/makefreeze.py:writecode()
for i in range(0, len(data), 16):
line = [' ']
for c in data[i:i+16]:
line.append('%d,' % c)
lines.append(''.join(line))
lines.append('};\n')
with open(output_path, 'w', encoding='utf-8') as output_file:
output_file.write('\n'.join(lines))
output_file.write('/* Mercurial binary marker: \x00 */')
# Avoid a compiler warning for lack of EOL
output_file.write('\n')
if __name__ == '__main__':
import sys
args = sys.argv[1:]
if len(args) != 2:
print('Need to specify input and output file paths', file=sys.stderr)
sys.exit(1)
main(*args)