#!/bin/bash
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function test-comp() {
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#compress file
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$1 -$2 -c test.tar > "test.$2.$3" 2>/dev/null
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#write file size to temp file for csv formation
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printf "$(wc -c test.$2.$3 | awk '{print $1}')\n" >> $3
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#remove file
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rm -f "test.$2.$3"
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}
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function test-bzip2() {
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rm -f "bz2"
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for i in {1..9}; do
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test-comp bzip2 $i "bz2"
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done
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}
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function test-gzip() {
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rm -f "gz"
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for i in {1..9}; do
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test-comp gzip $i "gz"
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done
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}
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function test-lz4() {
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rm -f "lz4"
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for i in {1..12}; do
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test-comp lz4 $i "lz4"
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done
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}
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function test-xz() {
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rm -f "xz"
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for i in {1..9}; do
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test-comp xz $i "xz"
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done
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}
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function test-xz-e() {
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rm -f "xze"
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for i in {1..9}; do
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test-comp "xz -e" $i "xze"
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done
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}
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function test-lzma() {
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rm -f "lzma"
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for i in {1..9}; do
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test-comp lzma $i "lzma"
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done
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}
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function test-lzma-e() {
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rm -f "lzmae"
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for i in {1..9}; do
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test-comp "lzma -e" $i "lzmae"
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done
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}
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function test-zstd() {
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rm -f "zst"
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for i in {1..19}; do
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test-comp zstd $i "zst"
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done
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for i in {20..22}; do
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test-comp "zstd --ultra" $i "zst"
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done
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}
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if [ -z $1 ]; then
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echo "Usage: $0 FILES"
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exit
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fi
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# create a tar file to deal with directories
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tar -cf test.tar "$@"
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# run tests with all algorithms/programs
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rm -f results.csv
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ALGS=(bzip2 gzip lz4 xz xz-e lzma lzma-e zstd)
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for i in ${ALGS[*]}; do
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test-$i
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done
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rm -f test.tar
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# create csv with vertical columns
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ALG_RES=`find . -maxdepth 1 -not -name '*.*' -type f`
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printf "level" >> results.csv
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for i in ${ALG_RES[*]}; do
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printf ",%s" $(echo $i | sed 's/\.\///') >> results.csv
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done
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printf "\n" >> results.csv
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for i in {1..22}; do
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printf "$i" >> results.csv
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for j in $ALG_RES; do
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k=1;
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FOUND=0;
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while read LINE; do
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if [ $k == $i ]; then
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printf ",$LINE" >> results.csv
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FOUND=1
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break
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fi
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k=$((k+1))
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done < $j
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[ $FOUND == 0 ] && printf "," >> results.csv
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done
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printf "\n" >> results.csv
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done
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for i in ${ALG_RES[*]}; do
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rm -f $i
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done
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# generate plot using gnuplot
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read -p "Generate plot? Y/n " PLOT
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if [[ -z $PLOT || $PLOT == "y" || $PLOT == "Y" ]]; then
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gnuplot -e "set datafile separator \",\"; \
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set term png; \
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set output 'results.png'; \
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plot for [col=2:$((${#ALGS[@]}+1))] 'results.csv' using 1:col with lines title columnheader"
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fi
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