mirror of https://github.com/python/cpython.git
69 lines
1.8 KiB
Python
69 lines
1.8 KiB
Python
"""Python implementation of Programs/_freeze_module.c
|
|
|
|
The pure Python implementation uses same functions and arguments as the C
|
|
implementation.
|
|
|
|
The generated byte code is slightly different because
|
|
compile() sets the PyCF_SOURCE_IS_UTF8 flag and objects have a
|
|
reference count > 1. Marshal adds the `FLAG_REF` flag and creates a
|
|
reference `hashtable`.
|
|
"""
|
|
|
|
import marshal
|
|
import sys
|
|
|
|
header = "/* Auto-generated by Programs/_freeze_module.py */"
|
|
|
|
|
|
def read_text(inpath: str) -> bytes:
|
|
with open(inpath, "rb") as f:
|
|
return f.read()
|
|
|
|
|
|
def compile_and_marshal(name: str, text: bytes) -> bytes:
|
|
filename = f"<frozen {name}>"
|
|
# exec == Py_file_input
|
|
code = compile(text, filename, "exec", optimize=0, dont_inherit=True)
|
|
return marshal.dumps(code)
|
|
|
|
|
|
def get_varname(name: str, prefix: str) -> str:
|
|
return f"{prefix}{name.replace('.', '_')}"
|
|
|
|
|
|
def write_code(outfile, marshalled: bytes, varname: str) -> None:
|
|
data_size = len(marshalled)
|
|
|
|
outfile.write(f"const unsigned char {varname}[] = {{\n")
|
|
|
|
for n in range(0, data_size, 16):
|
|
outfile.write(" ")
|
|
outfile.write(",".join(str(i) for i in marshalled[n : n + 16]))
|
|
outfile.write(",\n")
|
|
outfile.write("};\n")
|
|
|
|
|
|
def write_frozen(outpath: str, inpath: str, name: str, marshalled: bytes) -> None:
|
|
with open(outpath, "w") as outfile:
|
|
outfile.write(header)
|
|
outfile.write("\n")
|
|
arrayname = get_varname(name, "_Py_M__")
|
|
write_code(outfile, marshalled, arrayname)
|
|
|
|
|
|
def main():
|
|
if len(sys.argv) != 4:
|
|
sys.exit("need to specify the name, input and output paths\n")
|
|
|
|
name = sys.argv[1]
|
|
inpath = sys.argv[2]
|
|
outpath = sys.argv[3]
|
|
|
|
text = read_text(inpath)
|
|
marshalled = compile_and_marshal(name, text)
|
|
write_frozen(outpath, inpath, name, marshalled)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|