45 lines
953 B
Bash
Executable File
45 lines
953 B
Bash
Executable File
#!/usr/bin/zsh
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# optimize png and jpg files
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calc_reduction()
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{
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SIZE_PRE="$1"
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SIZE_POST="$2"
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PERECENT=` echo "scale=2; 100 - (100 * $SIZE_POST / $SIZE_PRE)" | bc `
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RESULT="$(( $SIZE_PRE / 1000 ))-$(( ( $SIZE_PRE - $SIZE_POST ) / 1000 )) kb \
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($PERECENT%)
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"
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echo " $RESULT"
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}
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for FILENAME in "$@"
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do
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FILETYPE=` file -b --mime-type "$FILENAME" `
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echo "$FILENAME : $FILETYPE"
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SIZE_PRE=` stat "$FILENAME" -c '%s' `
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case "$FILETYPE" in
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'image/png')
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mogrify "$FILENAME"
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pngcrush -nolimits -s "$FILENAME" "$FILENAME.tmp.png"
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if [ -f "$FILENAME.tmp.png" ] \
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&& [ -s "$FILENAME.tmp.png" ]
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then
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mv "$FILENAME.tmp.png" "$FILENAME"
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else
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rm "$FILENAME.tmp.png"
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fi
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;;
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'image/jpeg')
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jpegoptim "$FILENAME" -qsftp
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;;
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esac
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SIZE_POST=` stat "$FILENAME" -c '%s' `
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[ $SIZE_PRE -gt $SIZE_POST ] \
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&& echo ` calc_reduction "$SIZE_PRE" "$SIZE_POST" `
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done
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