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32 | 32 | ||
33 | import sys |
33 | import sys |
34 | import os |
34 | import os |
35 | import struct |
35 | import struct |
36 | 36 | ||
- | 37 | def align_up(size, alignment): |
|
- | 38 | return (((size) + ((alignment) - 1)) & ~((alignment) - 1)) |
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- | 39 | ||
37 | def usage(prname): |
40 | def usage(prname): |
38 | "Print usage syntax" |
41 | "Print usage syntax" |
39 | print prname + " <PATH> <IMAGE>" |
42 | print prname + " <ALIGNMENT> <PATH> <IMAGE>" |
40 | 43 | ||
41 | def main(): |
44 | def main(): |
42 | if (len(sys.argv) < 3): |
45 | if (len(sys.argv) < 4): |
43 | usage(sys.argv[0]) |
46 | usage(sys.argv[0]) |
44 | return |
47 | return |
45 | 48 | ||
- | 49 | if (not sys.argv[1].isdigit()): |
|
- | 50 | print "<ALIGNMENT> must be a number" |
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- | 51 | return |
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- | 52 | ||
- | 53 | align = int(sys.argv[1], 0) |
|
46 | path = os.path.abspath(sys.argv[1]); |
54 | path = os.path.abspath(sys.argv[2]) |
47 | if (not os.path.isdir(path)): |
55 | if (not os.path.isdir(path)): |
48 | print "<PATH> must be a directory" |
56 | print "<PATH> must be a directory" |
49 | return |
57 | return |
50 | 58 | ||
51 | header_size = 18 |
59 | header_size = align_up(18, align) |
52 | payload_size = 0 |
60 | payload_size = 0 |
53 | outf = file(sys.argv[2], "w") |
61 | outf = file(sys.argv[3], "w") |
54 | outf.write(struct.pack("<" + ("%d" % header_size) + "x")) |
62 | outf.write(struct.pack("<" + ("%d" % header_size) + "x")) |
55 | 63 | ||
56 | for root, dirs, files in os.walk(path): |
64 | for root, dirs, files in os.walk(path): |
57 | relpath = root[len(path):len(root)] |
65 | relpath = root[len(path):len(root)] |
58 | for name in files: |
66 | for name in files: |
Line 77... | Line 85... | ||
77 | for name in dirs: |
85 | for name in dirs: |
78 | canon = os.path.join(relpath, name) |
86 | canon = os.path.join(relpath, name) |
79 | outf.write(struct.pack("<BL" + ("%d" % len(canon)) + "s", 2, len(canon), canon)) |
87 | outf.write(struct.pack("<BL" + ("%d" % len(canon)) + "s", 2, len(canon), canon)) |
80 | payload_size += 5 + len(canon) |
88 | payload_size += 5 + len(canon) |
81 | 89 | ||
- | 90 | aligned_size = align_up(payload_size, align) |
|
- | 91 | ||
- | 92 | if (aligned_size - payload_size > 0): |
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- | 93 | outf.write(struct.pack("<" + ("%d" % (aligned_size - payload_size)) + "x")) |
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- | 94 | ||
82 | outf.seek(0) |
95 | outf.seek(0) |
83 | outf.write(struct.pack("<4sBBLQ", "HORD", 1, 1, header_size, payload_size)) |
96 | outf.write(struct.pack("<4sBBLQ", "HORD", 1, 1, header_size, aligned_size)) |
84 | outf.close() |
97 | outf.close() |
85 | 98 | ||
86 | if __name__ == '__main__': |
99 | if __name__ == '__main__': |
87 | main() |
100 | main() |