source: mainline/tools/mkarray.py@ 5f53428a

#!/usr/bin/env python
#
# Copyright (c) 2011 Martin Decky
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# - Redistributions of source code must retain the above copyright
#   notice, this list of conditions and the following disclaimer.
# - Redistributions in binary form must reproduce the above copyright
#   notice, this list of conditions and the following disclaimer in the
#   documentation and/or other materials provided with the distribution.
# - The name of the author may not be used to endorse or promote products
#   derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
"""
Binary inline data packer
"""

import sys
import os
import zlib
import zipfile
import binascii

def usage(prname):
        "Print usage syntax"
        print("%s [--deflate] <DESTINATION> <LABEL> <AS_PROLOG> [SOURCE ...]" % prname)

def arg_check():
        if (len(sys.argv) < 4):
                usage(sys.argv[0])
                sys.exit()

def deflate(data):
        "Compress using deflate algorithm (without any headers)"
        return zlib.compress(data, 9)[2:-4]

def chunks(string, length):
        "Produce string chunks"
        for start in range(0, len(string), length):
                yield string[start:start + length]

def main():
        arg_check()
        
        if sys.argv[1] == "--deflate":
                sys.argv.pop(1)
                arg_check()
                compress = True
        else:
                compress = False
        
        dest = sys.argv[1]
        label = sys.argv[2]
        as_prolog = sys.argv[3]
        
        header_ctx = []
        desc_ctx = []
        size_ctx = []
        data_ctx = []
        
        src_cnt = 0
        
        for src in sys.argv[4:]:
                basename = os.path.basename(src)
                plainname = os.path.splitext(basename)[0]
                symbol = basename.replace(".", "_")
                
                print("%s -> %s" % (src, symbol))
                
                src_in = open(src, "rb")
                src_data = src_in.read()
                src_in.close()
                
                length = len(src_data)
                
                if compress:
                        src_data = deflate(src_data)
                
                if sys.version_info < (3,):
                        src_data = bytearray(src_data)
                
                length_out = len(src_data)
                
                header_ctx.append("extern uint8_t %s[];" % symbol)
                header_ctx.append("extern size_t %s_size;" % symbol)
                
                data_ctx.append(".globl %s" % symbol)
                data_ctx.append(".balign 8")
                data_ctx.append(".size %s, %u" % (symbol, length_out))
                data_ctx.append("%s:" % symbol)
                data_ctx.append("\t.byte 0x" + ', 0x'.join(chunks(binascii.b2a_hex(src_data), 2)) + "\n")
                
                desc_field = []
                desc_field.append("\t{")
                desc_field.append("\t\t.name = \"%s\"," % plainname)
                desc_field.append("\t\t.addr = (void *) %s," % symbol)
                desc_field.append("\t\t.size = %u," % length_out)
                desc_field.append("\t\t.inflated = %u" % length)
                desc_field.append("\t}")
                
                desc_ctx.append("\n".join(desc_field))
                
                size_ctx.append("size_t %s_size = %u;" % (symbol, length_out))
                
                src_cnt += 1
        
        archive = zipfile.ZipFile("%s.zip" % dest, "w", zipfile.ZIP_STORED)
        
        data = ''
        data += '/***************************************\n'
        data += ' * AUTO-GENERATED FILE, DO NOT EDIT!!! *\n'
        data += ' * Generated by: tools/mkarray.py      *\n'
        data += ' ***************************************/\n\n'
        data += "#ifndef %sS_H_\n" % label.upper()
        data += "#define %sS_H_\n\n" % label.upper()
        data += "#include <stddef.h>\n"
        data += "#include <stdint.h>\n\n"
        data += "#define %sS  %u\n\n" % (label.upper(), src_cnt)
        data += "typedef struct {\n"
        data += "\tconst char *name;\n"
        data += "\tvoid *addr;\n"
        data += "\tsize_t size;\n"
        data += "\tsize_t inflated;\n"
        data += "} %s_t;\n\n" % label
        data += "extern %s_t %ss[];\n\n" % (label, label)
        data += "\n".join(header_ctx)
        data += "\n\n"
        data += "#endif\n"
        archive.writestr("%s.h" % dest, data)
        
        data = ''
        data += '/***************************************\n'
        data += ' * AUTO-GENERATED FILE, DO NOT EDIT!!! *\n'
        data += ' * Generated by: tools/mkarray.py      *\n'
        data += ' ***************************************/\n\n'
        data += as_prolog
        data += '.data\n\n'
        data += "\n".join(data_ctx)
        data += "\n"
        archive.writestr("%s.s" % dest, data)
        
        data = ''
        data += '/***************************************\n'
        data += ' * AUTO-GENERATED FILE, DO NOT EDIT!!! *\n'
        data += ' * Generated by: tools/mkarray.py      *\n'
        data += ' ***************************************/\n\n'
        data += "#include \"%s.h\"\n\n" % dest
        data += "%s_t %ss[] = {\n" % (label, label)
        data += ",\n".join(desc_ctx)
        data += "\n"
        data += "};\n\n"
        data += "\n".join(size_ctx)
        data += "\n"
        archive.writestr("%s_desc.c" % dest, data)
        
        archive.close()

if __name__ == '__main__':
        main()