Rev 3245 | Rev 3260 | Go to most recent revision | Only display areas with differences | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 3245 | Rev 3259 | ||
---|---|---|---|
1 | #!/usr/bin/env python |
1 | #!/usr/bin/env python |
2 | # |
2 | # |
3 | # Copyright (c) 2008 Martin Decky |
3 | # Copyright (c) 2008 Martin Decky |
4 | # All rights reserved. |
4 | # All rights reserved. |
5 | # |
5 | # |
6 | # Redistribution and use in source and binary forms, with or without |
6 | # Redistribution and use in source and binary forms, with or without |
7 | # modification, are permitted provided that the following conditions |
7 | # modification, are permitted provided that the following conditions |
8 | # are met: |
8 | # are met: |
9 | # |
9 | # |
10 | # - Redistributions of source code must retain the above copyright |
10 | # - Redistributions of source code must retain the above copyright |
11 | # notice, this list of conditions and the following disclaimer. |
11 | # notice, this list of conditions and the following disclaimer. |
12 | # - Redistributions in binary form must reproduce the above copyright |
12 | # - Redistributions in binary form must reproduce the above copyright |
13 | # notice, this list of conditions and the following disclaimer in the |
13 | # notice, this list of conditions and the following disclaimer in the |
14 | # documentation and/or other materials provided with the distribution. |
14 | # documentation and/or other materials provided with the distribution. |
15 | # - The name of the author may not be used to endorse or promote products |
15 | # - The name of the author may not be used to endorse or promote products |
16 | # derived from this software without specific prior written permission. |
16 | # derived from this software without specific prior written permission. |
17 | # |
17 | # |
18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | # |
28 | # |
29 | """ |
29 | """ |
30 | HORD encapsulator |
30 | HORD encapsulator |
31 | """ |
31 | """ |
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): |
37 | def align_up(size, alignment): |
38 | "Align upwards to a given alignment" |
38 | "Align upwards to a given alignment" |
39 | return (((size) + ((alignment) - 1)) & ~((alignment) - 1)) |
39 | return (((size) + ((alignment) - 1)) & ~((alignment) - 1)) |
40 | 40 | ||
41 | - | ||
42 | def usage(prname): |
41 | def usage(prname): |
43 | "Print usage syntax" |
42 | "Print usage syntax" |
44 | print prname + " <ALIGNMENT> <FS_IMAGE> <HORD_IMAGE>" |
43 | print prname + " <ALIGNMENT> <FS_IMAGE> <HORD_IMAGE>" |
45 | 44 | ||
46 | def main(): |
45 | def main(): |
47 | if (len(sys.argv) < 4): |
46 | if (len(sys.argv) < 4): |
48 | usage(sys.argv[0]) |
47 | usage(sys.argv[0]) |
49 | return |
48 | return |
50 | 49 | ||
51 | if (not sys.argv[1].isdigit()): |
50 | if (not sys.argv[1].isdigit()): |
52 | print "<ALIGNMENT> must be a number" |
51 | print "<ALIGNMENT> must be a number" |
53 | return |
52 | return |
54 | 53 | ||
55 | align = int(sys.argv[1], 0) |
54 | align = int(sys.argv[1], 0) |
56 | fs_image = os.path.abspath(sys.argv[2]) |
55 | fs_image = os.path.abspath(sys.argv[2]) |
57 | if (not os.path.isfile(fs_image)): |
56 | if (not os.path.isfile(fs_image)): |
58 | print "<FS_IMAGE> must be a file" |
57 | print "<FS_IMAGE> must be a file" |
59 | return |
58 | return |
60 | 59 | ||
61 | inf = file(fs_image, "rb") |
60 | inf = file(fs_image, "rb") |
62 | outf = file(sys.argv[3], "wb") |
61 | outf = file(sys.argv[3], "wb") |
63 | 62 | ||
64 | header_size = align_up(18, align) |
63 | header_size = align_up(18, align) |
65 | aligned_size = align_up(os.path.getsize(fs_image), align) |
64 | aligned_size = align_up(os.path.getsize(fs_image), align) |
66 | 65 | ||
67 | - | ||
68 | outf.write(struct.pack("<4sBBLQ", "HORD", 1, 1, header_size, aligned_size)) |
66 | outf.write(struct.pack("<4sBBLQ", "HORD", 1, 1, header_size, aligned_size)) |
69 | outf.write(struct.pack("<" + ("%d" % (header_size - 18)) + "x")) |
67 | outf.write(struct.pack("<" + ("%d" % (header_size - 18)) + "x")) |
70 | 68 | ||
71 | outf.write(inf.read()) |
69 | outf.write(inf.read()) |
72 | 70 | ||
73 | padding = aligned_size - os.path.getsize(fs_image) |
71 | padding = aligned_size - os.path.getsize(fs_image) |
74 | if (padding > 0): |
72 | if (padding > 0): |
75 | outf.write(struct.pack("<" + ("%d" % padding) + "x")) |
73 | outf.write(struct.pack("<" + ("%d" % padding) + "x")) |
76 | 74 | ||
77 | inf.close() |
75 | inf.close() |
78 | outf.close() |
76 | outf.close() |
79 | 77 | ||
80 | if __name__ == '__main__': |
78 | if __name__ == '__main__': |
81 | main() |
79 | main() |
82 | 80 |