#!/bin/sh -x

# Copyright (C) 1994-2016 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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# -----------------------------------------------------------------------------
# Test hzip compression capability in silo by generating compressed data
# file, copying it, re-generating w/o compression and then diffing it with
# browser against the original.
#
# Programmer: Mark C. Miller
# Creation:   July 21, 2008
#
# Modifications:
#   Mark C. Miller, Wed Feb  4 20:58:34 PST 2009
#   Made it more lenient about the compressed file size being larger. That
#   can happen for toy datasets.
# -----------------------------------------------------------------------------

# Diddle the the directory because Autotest is not at all designed to handle
# tests the way this one was written
if test -n "$1"; then
    topDir=$1
    if test -e $topDir/../../multi_test; then
        topDir=$1/../..
    fi
else
    topDir=.
fi

h5stat=$(which h5stat)
if [[ $? -ne 0 ]]; then
    exit 77
fi

#
# Create data with compression (only on HDF5 driver) and save files
#
$topDir/multi_test DB_HDF5 hzip 1>/dev/null 2>&1
rm -rf h5_hzip_files
mkdir h5_hzip_files
mv multi_*d.h5 h5_hzip_files/.

#
# Create data without compression 
#
$topDir/multi_test DB_HDF5 1>/dev/null 2>&1

#
# Now, run browser and make sure we don't get any errors in the diff
#
result=0
for df in multi_*.h5; do
    # confirm compressed files are smaller (or at least not too much bigger)
    hzip_raw_data_size=$(h5stat -d h5_hzip_files/$df | grep 'Total raw data size' | tr -d '\t ' | cut -d':' -f2)
    orig_raw_data_size=$(h5stat -d $df | grep 'Total raw data size' | tr -d '\t ' | cut -d':' -f2)
echo $hzip_raw_data_size $orig_raw_data_size
    if test $orig_raw_data_size -lt $hzip_raw_data_size; then
        result=1
        break
    fi
    # do a diff on the files and confirm contents match
    rm -f testhzip.out
    $topDir/../tools/browser/browser -q -e diff $df h5_hzip_files/$df 1>testhzip.out 2>&1
    if test `cat testhzip.out | wc -l | tr -d ' '` -gt 0; then
        result=1
        break
    fi
done

#
# Cleanup
#
rm -rf h5_hzip_files
rm -f testhzip.out

exit $result 
