47 lines
1.6 KiB
Bash
47 lines
1.6 KiB
Bash
#!/bin/sh
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FPREFIX="tmp-dict"
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set -e
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remove () {
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rm $FPREFIX*
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}
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trap remove EXIT
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set -x
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datagen -g16KB > $FPREFIX
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datagen -g32KB > $FPREFIX-sample-32k
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< $FPREFIX-sample-32k lz4 -D $FPREFIX | lz4 -dD $FPREFIX | diff - $FPREFIX-sample-32k
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datagen -g16MB > $FPREFIX-sample-16m
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lz4 -v -B5 $FPREFIX-sample-16m -D $FPREFIX -c | lz4 -d -D $FPREFIX | diff - $FPREFIX-sample-16m
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# Check dictionary compression efficiency
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size_dict=$( lz4 -3 -B4 $FPREFIX-sample-16m -D $FPREFIX -c | wc -c)
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size_nodict=$( lz4 -3 -B4 $FPREFIX-sample-16m -c | wc -c)
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if [ "$size_dict" -lt "$size_nodict" ]; then
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echo "Test Passed: dictionary is effective."
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else
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echo "Test Failed: dictionary wasn't effective."
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exit 1
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fi
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touch $FPREFIX-sample-0
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< $FPREFIX-sample-0 lz4 -D $FPREFIX | lz4 -dD $FPREFIX | diff - $FPREFIX-sample-0
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< $FPREFIX-sample-32k lz4 -D $FPREFIX-sample-0 | lz4 -dD $FPREFIX-sample-0 | diff - $FPREFIX-sample-32k
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< $FPREFIX-sample-0 lz4 -D $FPREFIX-sample-0 | lz4 -dD $FPREFIX-sample-0 | diff - $FPREFIX-sample-0
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lz4 -bi0 -D $FPREFIX $FPREFIX-sample-32k $FPREFIX-sample-32k
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echo "---- test lz4 dictionary loading ----"
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datagen -g128KB > $FPREFIX-data-128KB
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set -e; \
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for l in 0 1 4 128 32767 32768 32769 65535 65536 65537 98303 98304 98305 131071 131072 131073; do \
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datagen -g$$l > $FPREFIX-$$l; \
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dd if=$FPREFIX-$$l of=$FPREFIX-$$l-tail bs=1 count=65536 skip=$((l > 65536 ? l - 65536 : 0)); \
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< $FPREFIX-$$l lz4 -D stdin $FPREFIX-data-128KB -c | lz4 -dD $FPREFIX-$$l-tail | diff - $FPREFIX-data-128KB; \
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< $FPREFIX-$$l-tail lz4 -D stdin $FPREFIX-data-128KB -c | lz4 -dD $FPREFIX-$$l | diff - $FPREFIX-data-128KB; \
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done
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