32,18 → 32,16 |
|
import sys |
import os |
import struct |
import xstruct |
|
HEADER = xstruct.convert("little: " |
"char[4] /* 'HORD' */ " |
"uint8_t /* version */ " |
"uint8_t /* encoding */ " |
"uint32_t /* header size */ " |
"uint64_t /* payload size */ " |
) |
HEADER = """little: |
char[4] tag /* 'HORD' */ |
uint8_t version /* version */ |
uint8_t encoding /* encoding */ |
uint32_t header_size /* header size */ |
uint64_t payload_size /* payload size */ |
""" |
|
HORD_VERSION = 1 |
HORD_LSB = 1 |
|
def align_up(size, alignment): |
76,20 → 74,28 |
inf = file(fs_image, "rb") |
outf = file(sys.argv[3], "wb") |
|
header_size = struct.calcsize(HEADER) |
header = xstruct.create(HEADER) |
|
header_size = header.size() |
payload_size = os.path.getsize(fs_image) |
|
header_size_aligned = align_up(header_size, align) |
payload_size_aligned = align_up(payload_size, align) |
|
outf.write(struct.pack(HEADER, "HORD", HORD_VERSION, HORD_LSB, header_size_aligned, payload_size_aligned)) |
outf.write(xstruct.little_padding(header_size_aligned - header_size)) |
header.tag = "HORD" |
header.version = 1 |
header.encoding = HORD_LSB |
header.header_size = header_size_aligned |
header.payload_size = payload_size_aligned |
|
outf.write(header.pack()) |
outf.write(xstruct.create("little: padding[%d]" % (header_size_aligned - header_size)).pack()) |
|
outf.write(inf.read()) |
|
padding = payload_size_aligned - payload_size |
if (padding > 0): |
outf.write(xstruct.little_padding(padding)) |
outf.write(xstruct.create("little: padding[%d]" % padding).pack()) |
|
inf.close() |
outf.close() |