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