0,0 → 1,101 |
#!/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. |
# |
""" |
TMPFS creator |
""" |
|
import sys |
import os |
import struct |
|
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> <PATH> <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) |
path = os.path.abspath(sys.argv[2]) |
if (not os.path.isdir(path)): |
print "<PATH> must be a directory" |
return |
|
header_size = align_up(18, align) |
payload_size = 0 |
outf = file(sys.argv[3], "w") |
outf.write(struct.pack("<" + ("%d" % header_size) + "x")) |
|
for root, dirs, files in os.walk(path): |
relpath = root[len(path):len(root)] |
for name in files: |
canon = os.path.join(relpath, name) |
outf.write(struct.pack("<BL" + ("%d" % len(canon)) + "s", 1, len(canon), canon)) |
payload_size += 5 + len(canon) |
|
fn = os.path.join(root, name) |
size = os.path.getsize(fn) |
rd = 0; |
outf.write(struct.pack("<L", size)) |
payload_size += 4 |
|
inf = file(fn, "r") |
while (rd < size): |
data = inf.read(4096); |
outf.write(data) |
payload_size += len(data) |
rd += len(data) |
inf.close() |
|
for name in dirs: |
canon = os.path.join(relpath, name) |
outf.write(struct.pack("<BL" + ("%d" % len(canon)) + "s", 2, len(canon), canon)) |
payload_size += 5 + len(canon) |
|
aligned_size = align_up(payload_size, align) |
|
if (aligned_size - payload_size > 0): |
outf.write(struct.pack("<" + ("%d" % (aligned_size - payload_size)) + "x")) |
|
outf.seek(0) |
outf.write(struct.pack("<4sBBLQ", "HORD", 1, 1, header_size, aligned_size)) |
outf.close() |
|
if __name__ == '__main__': |
main() |
Property changes: |
Added: svn:executable |
+* |
\ No newline at end of property |