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#!/usr/bin/env python
#
# Takes a directory of files and zips them up (as uncompressed files).
# This then gets converted into a C data structure which can be read
# like a filesystem at runtime.
#
# This is somewhat like frozen modules in python, but allows arbitrary files
# to be used.
from __future__ import print_function
import argparse
import os
import subprocess
import sys
import types
def create_zip(zip_filename, zip_dir):
abs_zip_filename = os.path.abspath(zip_filename)
save_cwd = os.getcwd()
os.chdir(zip_dir)
if os.path.exists(abs_zip_filename):
os.remove(abs_zip_filename)
subprocess.check_call(["zip", "-0", "-r", "-D", abs_zip_filename, "."])
os.chdir(save_cwd)
def create_c_from_file(c_filename, zip_filename):
with open(zip_filename, "rb") as zip_file:
with open(c_filename, "wb") as c_file:
print("#include <stdint.h>", file=c_file)
print("", file=c_file)
print("const uint8_t memzip_data[] = {", file=c_file)
while True:
buf = zip_file.read(16)
if not buf:
break
print(" ", end="", file=c_file)
for byte in buf:
if isinstance(byte, types.StringType):
print(" 0x{:02x},".format(ord(byte)), end="", file=c_file)
else:
print(" 0x{:02x},".format(byte), end="", file=c_file)
print("", file=c_file)
print("};", file=c_file)
def main():
parser = argparse.ArgumentParser(
prog="make-memzip.py",
usage="%(prog)s [options] [command]",
description="Generates a C source memzip file.",
)
parser.add_argument(
"-z",
"--zip-file",
dest="zip_filename",
help="Specifies the name of the created zip file.",
default="memzip_files.zip",
)
parser.add_argument(
"-c",
"--c-file",
dest="c_filename",
help="Specifies the name of the created C source file.",
default="memzip_files.c",
)
parser.add_argument(dest="source_dir", default="memzip_files")
args = parser.parse_args(sys.argv[1:])
print("args.zip_filename =", args.zip_filename)
print("args.c_filename =", args.c_filename)
print("args.source_dir =", args.source_dir)
create_zip(args.zip_filename, args.source_dir)
create_c_from_file(args.c_filename, args.zip_filename)
if __name__ == "__main__":
main()
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