libsilo-bin 4.10.2-6+b3 / usr / bin / silofile

#!/bin/sh

# Copyright (c) 1994 - 2010, Lawrence Livermore National Security, LLC.
# LLNL-CODE-425250.
# All rights reserved.
# 
# This file is part of Silo. For details, see silo.llnl.gov.
# 
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# 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 disclaimer below.
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#      below) in the documentation and/or other materials provided with
#      the distribution.
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#      contributors may be used to endorse or promote products derived
#      from this software without specific prior written permission.
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# THIS SOFTWARE  IS PROVIDED BY  THE COPYRIGHT HOLDERS  AND CONTRIBUTORS
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# 
# This work was produced at Lawrence Livermore National Laboratory under
# Contract  No.   DE-AC52-07NA27344 with  the  DOE.  Neither the  United
# States Government  nor Lawrence  Livermore National Security,  LLC nor
# any of  their employees,  makes any warranty,  express or  implied, or
# assumes   any   liability   or   responsibility  for   the   accuracy,
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#
# Modifications:
#   
#   Mark C. Miller, Wed Jul 14 21:04:10 PDT 2010
#   Completely re-wrote to use od instead of file command as that
#   has proven more reliable.
#

#
# Use octal dump (od) command to examine first few bytes of file.
# If do not find expected bytes of any of the formats we'd like
# to identify here, fall back to using the good ole' file command.
#
unknownFiles=
for f in $*; do
    headerBytes=$(od -c -N 10 $f)
    if test -n "$(echo $headerBytes | tr -d ' ' | grep '<<PDB:')"; then
        echo "$f: Portable Database (PDB) data"
    elif test -n "$(echo $headerBytes | tr -d ' \\' | grep 'HDFrn032')"; then
        echo "$f: Hierarchical Data Format version 5 (HDF5) data"
    else
        headerBytes=$(od -t x1 -N 4 $f)
        if test -n "$(echo $headerBytes | grep '0000000 0e 03 13 01')"; then
            echo "$f: Hierarchical Data Format version 4 (HDF4) data"
        else
	    unknownFiles="$unknownFiles $f"
        fi
    fi
done

#
# If we have any unknown files, use the ordinary file command on them.
#
if test -n "$unknownFiles"; then
    file $unknownFiles
fi