mirror of https://github.com/python/cpython
92 lines
1.8 KiB
Python
92 lines
1.8 KiB
Python
import marshal
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# Write a file containing frozen code for the modules in the dictionary.
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header = """
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struct frozen {
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char *name;
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unsigned char *code;
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int size;
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} frozen_modules[] = {
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"""
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trailer = """\
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{0, 0, 0} /* sentinel */
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};
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"""
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def makefreeze(outfp, dict):
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done = []
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mods = dict.keys()
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mods.sort()
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for mod in mods:
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modfn = dict[mod]
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try:
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str = makecode(modfn)
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except IOError, msg:
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sys.stderr.write("%s: %s\n" % (modfn, str(msg)))
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continue
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if str:
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done.append(mod, len(str))
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writecode(outfp, mod, str)
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outfp.write(header)
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for mod, size in done:
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outfp.write('\t{"%s", M_%s, %d},\n' % (mod, mod, size))
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outfp.write(trailer)
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# Return code string for a given module -- either a .py or a .pyc
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# file. Return either a string or None (if it's not Python code).
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# May raise IOError.
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def makecode(filename):
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if filename[-3:] == '.py':
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f = open(filename, 'r')
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try:
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text = f.read()
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code = compile(text, filename, 'exec')
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finally:
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f.close()
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return marshal.dumps(code)
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if filename[-4:] == '.pyc':
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f = open(filename, 'rb')
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try:
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f.seek(8)
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str = f.read()
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finally:
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f.close()
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return str
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# Can't generate code for this extension
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return None
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# Write a C initializer for a module containing the frozen python code.
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# The array is called M_<mod>.
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def writecode(outfp, mod, str):
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outfp.write('static unsigned char M_%s[] = {' % mod)
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for i in range(0, len(str), 16):
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outfp.write('\n\t')
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for c in str[i:i+16]:
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outfp.write('%d,' % ord(c))
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outfp.write('\n};\n')
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# Test for the above functions.
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def test():
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import os
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import sys
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if not sys.argv[1:]:
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print 'usage: python freezepython.py file.py(c) ...'
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sys.exit(2)
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dict = {}
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for arg in sys.argv[1:]:
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base = os.path.basename(arg)
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mod, ext = os.path.splitext(base)
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dict[mod] = arg
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makefreeze(sys.stdout, dict)
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if __name__ == '__main__':
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test()
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