0ff4c25958
This commit is useful if there is a need to generate a file
that can be included into the application at build time.
The file can also be compressed automatically when embedding it.
Files to be generated are listed in
generate_inc_file
generate_inc_gz_file
variables.
How to use this commit in your application:
1. Add this to your application Makefile
SRC = $(ZEPHYR_BASE)/<your-app-dir>/src
include $(ZEPHYR_BASE)/scripts/Makefile.gen
2. Add needed binary/other embedded files into src/Makefile
to "generate_inc_file" or "generate_inc_gz_file" variables:
# List of files that are used to generate a file that can be
# included into .c file.
generate_inc_file += \
echo-apps-cert.der \
echo-apps-key.der \
file.bin
generate_inc_gz_file += \
index.html
include $(ZEPHYR_BASE)/scripts/Makefile.gen
3. In the application, do something with the embedded file
static const unsigned char inc_file[] = {
#include "file.bin.inc"
};
static const unsigned char gz_inc_file[] = {
#include "index.html.gz.inc"
};
The generated files in ${SRC}/*.inc are automatically removed
when you do "make pristine"
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
49 lines
1.4 KiB
Python
Executable file
49 lines
1.4 KiB
Python
Executable file
#!/usr/bin/env python3
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#
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# Copyright (c) 2017 Intel Corporation
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#
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# SPDX-License-Identifier: Apache-2.0
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# This converts a file to a list of hex characters which can then
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# be included to a source file.
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# Optionally, the output can be compressed if needed.
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import argparse
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import codecs
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import gzip
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import io
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def parse_args():
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global args
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parser = argparse.ArgumentParser(description = __doc__,
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formatter_class = argparse.RawDescriptionHelpFormatter)
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parser.add_argument("-f", "--file", required=True, help="Input file")
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parser.add_argument("-g", "--gzip", action="store_true",
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help="Compress the file using gzip before output")
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args = parser.parse_args()
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def get_nice_string(list_or_iterator):
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return ", ".join( "0x" + str(x) for x in list_or_iterator)
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def make_hex(chunk):
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hexdata = codecs.encode(chunk, 'hex').decode("utf-8")
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hexlist = map(''.join, zip(*[iter(hexdata)]*2))
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print(get_nice_string(hexlist) + ',')
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def main():
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parse_args()
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if args.gzip:
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with open(args.file, 'rb') as fg:
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content = io.BytesIO(gzip.compress(fg.read(), compresslevel=9))
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for chunk in iter(lambda: content.read(8), b''):
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make_hex(chunk)
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else:
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with open(args.file, "rb") as fp:
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for chunk in iter(lambda: fp.read(8), b''):
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make_hex(chunk)
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if __name__ == "__main__":
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main()
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