| 0,0 → 1,104 |
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| #!/usr/bin/env python |
| # |
| # Copyright (c) 2008 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. |
| # |
| """ |
| HORD encapsulator |
| """ |
| |
| import sys |
| import os |
| import xstruct |
| |
| HEADER = """little: |
| char tag[4] /* 'HORD' */ |
| uint8_t version /* version */ |
| uint8_t encoding /* encoding */ |
| uint32_t header_size /* header size */ |
| uint64_t payload_size /* payload size */ |
| """ |
| |
| HORD_LSB = 1 |
| |
| def align_up(size, alignment): |
| "Align upwards to a given alignment" |
| return (((size) + ((alignment) - 1)) & ~((alignment) - 1)) |
| |
| def usage(prname): |
| "Print usage syntax" |
| print prname + " <ALIGNMENT> <FS_IMAGE> <HORD_IMAGE>" |
| |
| def main(): |
| if (len(sys.argv) < 4): |
| usage(sys.argv[0]) |
| return |
| |
| if (not sys.argv[1].isdigit()): |
| print "<ALIGNMENT> must be a number" |
| return |
| |
| align = int(sys.argv[1], 0) |
| if (align <= 0): |
| print "<ALIGNMENT> must be positive" |
| return |
| |
| fs_image = os.path.abspath(sys.argv[2]) |
| if (not os.path.isfile(fs_image)): |
| print "<FS_IMAGE> must be a file" |
| return |
| |
| inf = file(fs_image, "rb") |
| outf = file(sys.argv[3], "wb") |
| |
| 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) |
| |
| 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.create("little: padding[%d]" % padding).pack()) |
| |
| inf.close() |
| outf.close() |
| |
| if __name__ == '__main__': |
| main() |
| Property changes: |
|---|
| Added: svn:executable |
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| +* |
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| \ No newline at end of property |
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