34,23 → 34,31 |
import os |
import struct |
|
def align_up(size, alignment): |
return (((size) + ((alignment) - 1)) & ~((alignment) - 1)) |
|
def usage(prname): |
"Print usage syntax" |
print prname + " <PATH> <IMAGE>" |
print prname + " <ALIGNMENT> <PATH> <IMAGE>" |
|
def main(): |
if (len(sys.argv) < 3): |
if (len(sys.argv) < 4): |
usage(sys.argv[0]) |
return |
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path = os.path.abspath(sys.argv[1]); |
if (not sys.argv[1].isdigit()): |
print "<ALIGNMENT> must be a number" |
return |
|
align = int(sys.argv[1], 0) |
path = os.path.abspath(sys.argv[2]) |
if (not os.path.isdir(path)): |
print "<PATH> must be a directory" |
return |
|
header_size = 18 |
header_size = align_up(18, align) |
payload_size = 0 |
outf = file(sys.argv[2], "w") |
outf = file(sys.argv[3], "w") |
outf.write(struct.pack("<" + ("%d" % header_size) + "x")) |
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for root, dirs, files in os.walk(path): |
79,8 → 87,13 |
outf.write(struct.pack("<BL" + ("%d" % len(canon)) + "s", 2, len(canon), canon)) |
payload_size += 5 + len(canon) |
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aligned_size = align_up(payload_size, align) |
|
if (aligned_size - payload_size > 0): |
outf.write(struct.pack("<" + ("%d" % (aligned_size - payload_size)) + "x")) |
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outf.seek(0) |
outf.write(struct.pack("<4sBBLQ", "HORD", 1, 1, header_size, payload_size)) |
outf.write(struct.pack("<4sBBLQ", "HORD", 1, 1, header_size, aligned_size)) |
outf.close() |
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if __name__ == '__main__': |