#!/usr/bin/python

# strace-decode v1.0 - decode hex output from 'strace -e (read|write)=all'
# Copyright (c) 2008, John Morrissey <jwm@horde.net>
# 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.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR
# CONTRIBUTORS 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.

# Decodes output from Linux 'strace -e read=all' or 'strace -e write=all'.
# Useful for obtaining raw data from a network connection or file I/O for,
# say, manual replay during troubleshooting.
#
# | 00000  23 21 2f 75 73 72 2f 62  69 6e 2f 70 79 74 68 6f  #!/usr/b in/pytho |
# | 00010  6e 0a 0a 0a 0a 69 6d 70  6f 72 74 20 72 65 0a 69  n....imp ort re.i |
# | 00020  6d 70 6f 72 74 20 73 79  73 0a 0a 66 6f 72 20 6c  mport sy s..for l |
# | 00030  69 6e 65 20 69 6e 20 73  79 73 2e 73 74 64 69 6e  ine in s ys.stdin |
# | 00040  3a 0a 09 6c 69 6e 65 20  3d 20 72 65 2e 73 75 62  :..line  = re.sub |
# | 00050  28 72 27 5e 5c 73 2b 5c  7c 5c 73 2b 5b 30 2d 39  (r'^\s+\ |\s+[0-9 |
# | 00060  61 2d 66 5d 2b 5c 73 2b  27 2c 20 27 27 2c 20 6c  a-f]+\s+ ', '', l |
# | 00070  69 6e 65 29 0a 09 6c 69  6e 65 20 3d 20 72 65 2e  ine)..li ne = re. |
# | 00080  73 75 62 28 72 27 5c 73  2b 2e 7b 38 7d 20 2e 7b  sub(r'\s +.{8} .{ |
# | 00090  38 7d 20 5c 7c 5c 73 2a  24 27 2c 20 27 27 2c 20  8} \|\s* $', '',  |
# | 000a0  6c 69 6e 65 29 0a 0a 09  66 6f 72 20 63 68 61 72  line)... for char |
# | 000b0  20 69 6e 20 72 65 2e 73  70 6c 69 74 28 72 27 5c   in re.s plit(r'\ |
# | 000c0  73 2b 27 2c 20 6c 69 6e  65 29 3a 0a 09 09 73 79  s+', lin e):...sy |
# | 000d0  73 2e 73 74 64 6f 75 74  2e 77 72 69 74 65 28 63  s.stdout .write(c |
# | 000e0  68 72 28 69 6e 74 28 63  68 61 72 2c 20 31 36 29  hr(int(c har, 16) |
# | 000f0  29 29 0a                                          )).               |

import re
import sys

for line in sys.stdin:
	line = re.sub(r'^\s+\|\s+[0-9a-f]+\s+', '', line)
	line = re.sub(r'\s+.{8} .{8} \|\s*$', '', line)

	for char in re.split(r'\s+', line):
		sys.stdout.write(chr(int(char, 16)))