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|
#!/bin/sh
# Command-line utility to generate various versions of a CDF file.
# An input file is specified on the command line, and this script
# rewrites different versions of it with varying endianness,
# compression style, CDF format version etc. These changes affect
# the format, but not the content, of the file.
# The resulting files can then be compared with the original to see
# if the library finds the same content in them all, which is a good
# test of the handling of different endiannesses, compression styles,
# CDF format versions etc.
#
# Flags:
# -create - actually writes the files
# -report - just output the filenames that would be written on stdout
# -verbose - be verbose
# -outdir <dir> - directory for output files
# -help - usage
#
# Dependencies:
# The cdfconvert command (from the CDF distribution) must be on the path.
usage="Usage: $0 [-create] [-report] [-verbose] [-outdir <dir>] <cdf-file>"
report=0
create=0
verbose=0
outdir=""
cdf=""
while [ $# -gt 0 ]
do
case "$1" in
-r|-report)
report=1
;;
-c|-create)
create=1
;;
-outdir)
outdir=$2
shift
;;
-v|-verbose)
verbose=1
;;
-h|-help)
echo $usage
exit 0
;;
*.cdf)
cdf="$1"
;;
*)
echo $usage
exit 1
esac
shift
done
if [ -z "$cdf" ]
then
echo $usage
exit 1
fi
# echo "create: $create; report: $report; verbose: $verbose; cdf: $cdf"
basein=`echo $cdf | sed 's/\.cdf$//'`
if [ -z "$outdir" ]
then
outdir=`dirname $basein`
fi
if [ -n "$outdir" ]
then
outdir="$outdir"/
fi
baseout=${outdir}`basename $basein`
# Some CDFs contain data types which cannot be converted to CDF V2.6 format.
# Attempting a conversion with the "-backward" backward compatibility flag
# on these will cause a partial file conversion which is not easy to detect,
# resulting in CDFs with different content. Add a filename-based hack
# to ensure that no attempt is made to force backward-compatibility
# checks for some files that are known to cause trouble.
if echo $cdf | egrep -q 'rbsp-|tha_|test.cdf'
then
back_compat=""
else
back_compat=-backward
fi
# Add more sets of cdfconvert flags here to do different manipulations
# of the CDF file.
count=0
for cflags in \
"-row -encoding network -compression cdf:gzip.5" \
"-column -encoding ibmpc -compression vars:huff.0" \
"$back_compat -compression vars:rle.0" \
"-sparseness vars:srecords.no -compression cdf:ahuff.0 -checksum md5"
do
count=`echo $count+1 | bc`
outname="${baseout}_c${count}"
cmd="cdfconvert -delete $cflags $basein $outname"
test $report -gt 0 && echo ${outname}.cdf
if [ $create -gt 0 ]
then
if [ $verbose -gt 0 ]
then
echo $cmd
$cmd
else
$cmd >/dev/null
fi
else
true
fi
done
|
