1#!/bin/sh 2 3FPREFIX="tmp-dict" 4 5set -e 6 7remove () { 8 rm $FPREFIX* 9} 10 11trap remove EXIT 12 13set -x 14 15datagen -g16KB > $FPREFIX 16datagen -g32KB > $FPREFIX-sample-32k 17< $FPREFIX-sample-32k lz4 -D $FPREFIX | lz4 -dD $FPREFIX | diff - $FPREFIX-sample-32k 18datagen -g16MB > $FPREFIX-sample-16m 19lz4 -v -B5 $FPREFIX-sample-16m -D $FPREFIX -c | lz4 -d -D $FPREFIX | diff - $FPREFIX-sample-16m 20 21# Check dictionary compression efficiency 22size_dict=$( lz4 -3 -B4 $FPREFIX-sample-16m -D $FPREFIX -c | wc -c) 23size_nodict=$( lz4 -3 -B4 $FPREFIX-sample-16m -c | wc -c) 24if [ "$size_dict" -lt "$size_nodict" ]; then 25 echo "Test Passed: dictionary is effective." 26else 27 echo "Test Failed: dictionary wasn't effective." 28 exit 1 29fi 30 31touch $FPREFIX-sample-0 32< $FPREFIX-sample-0 lz4 -D $FPREFIX | lz4 -dD $FPREFIX | diff - $FPREFIX-sample-0 33 34< $FPREFIX-sample-32k lz4 -D $FPREFIX-sample-0 | lz4 -dD $FPREFIX-sample-0 | diff - $FPREFIX-sample-32k 35< $FPREFIX-sample-0 lz4 -D $FPREFIX-sample-0 | lz4 -dD $FPREFIX-sample-0 | diff - $FPREFIX-sample-0 36lz4 -bi0 -D $FPREFIX $FPREFIX-sample-32k $FPREFIX-sample-32k 37 38echo "---- test lz4 dictionary loading ----" 39datagen -g128KB > $FPREFIX-data-128KB 40set -e; \ 41for l in 0 1 4 128 32767 32768 32769 65535 65536 65537 98303 98304 98305 131071 131072 131073; do \ 42 datagen -g$$l > $FPREFIX-$$l; \ 43 dd if=$FPREFIX-$$l of=$FPREFIX-$$l-tail bs=1 count=65536 skip=$((l > 65536 ? l - 65536 : 0)); \ 44 < $FPREFIX-$$l lz4 -D stdin $FPREFIX-data-128KB -c | lz4 -dD $FPREFIX-$$l-tail | diff - $FPREFIX-data-128KB; \ 45 < $FPREFIX-$$l-tail lz4 -D stdin $FPREFIX-data-128KB -c | lz4 -dD $FPREFIX-$$l | diff - $FPREFIX-data-128KB; \ 46done 47