Revert "On second though, shell script should not have .sh extension for simplicity"
This reverts commit 249eb79fc9.
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303f030351
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2 changed files with 100 additions and 114 deletions
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@ -7,9 +7,9 @@ You need to have ghoscript installed on your machine.
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```
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git clone https://gitea.auro.re/otthorn/pdf-optimize
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cd pdf-optimize
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chmod +x pdf-optimize
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chmod +x pdf-optimize.sh
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sudo mkdir -p /opt/bin/
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sudo cp pdf-optimize /opt/bin/
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sudo cp pdf-optimize.sh /opt/bin/pdf-optimize
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```
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Don't forget to add `/opt/bin` to your `PATH`.
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210
pdf-optimize
210
pdf-optimize
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@ -17,146 +17,132 @@
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function usage
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{
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echo "usage: pdf-optimize [options] input.pdf"
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echo " ";
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echo " -a | --archive : archive mode (PDF/A)";
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echo " -c | --compatibility : compability more with PDF 1.4";
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echo " -h | --help : print this message";
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echo " -k | --quality : choose quality profile from:
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* 1 HIGH QUALITY [default]
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* 2 LOW QUALITY
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* 3 AGGRESSIVE
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* 4 VERY AGGRESIVE";
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echo " -o | --output : output filename";
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echo " -q | --quiet : run quietly";
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echo " -v | --verbose : run verbosly";
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echo " -y | --yes-to-replace : yes to replace existing files";
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echo " ";
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echo "If no output path is specified, given input.pdf as input will output
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echo "usage: pdf-optimize [options] input.pdf"
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echo " ";
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echo " -o | --output : output filename";
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echo " -q | --quiet : run quietly";
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echo " -v | --verbose : run verbosly";
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echo " -y | --yes-to-replace : yes to replace existing files";
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echo " -h | --help : print this message";
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echo " ";
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echo "If no output path is specified, given input.pdf as input will output
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input_compressed.pdf"
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}
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function arg_parse
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{
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# if no argument is given print help
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if [[ -z "$1" ]]; then
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usage; exit;
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fi
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# if no argument is given print help
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if [[ -z "$1" ]]; then
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usage; exit;
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fi
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# positional arguments
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args=()
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# positional arguments
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args=()
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while [ "$1" != "" ]; do
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case "$1" in
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-k | --quality ) quality="$2"; shift;;
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-o | --output ) output_path="$2"; shift;;
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-a | --archive ) archive=1;;
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-c | --compatibility ) compatibility=1;;
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-q | --quiet ) quiet=1;;
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-v | --verbose ) verbose=1;;
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-y | --yes-to-replace ) replace=1;;
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-h | --help ) usage; exit;;
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* ) args+=("$1")
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esac
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shift
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done
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while [ "$1" != "" ]; do
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case "$1" in
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-o | --output ) output_path="$2"; shift;;
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-q | --quiet ) quiet=1;;
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-v | --verbose ) verbose=1;;
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-y | --yes-to-replace ) replace=1;;
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-h | --help ) usage; exit;;
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* ) args+=("$1")
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esac
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shift
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done
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# restore positional argument
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set -- "${args[@]}"
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# restore positional argument
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set -- "${args[@]}"
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# only the first one should be used
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input_path="${args[0]}"
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# only the first one should be used
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input_path="${args[0]}"
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# add default output path if none is given
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if [[ -z "$output_path" ]]; then
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output_path="${input_path%.*}_compressed.pdf";
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fi
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# add default output path if none is given
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if [[ -z "$output_path" ]]; then
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output_path="${input_path%.*}_compressed.pdf";
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fi
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# check if the output file already exists before writting to it
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if [[ -f "$output_path" && "$replace" == 0 ]]; then
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yes_or_no "$output_path already exists, do you want to replace it?" ||
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exit 1;
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fi
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# check if the output file already exists before writting to it
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if [[ -f "$output_path" && "$replace" == 0 ]]; then
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yes_or_no "$output_path already exists, do you want to replace it?" ||
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exit 1;
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fi
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# check if the input file exists
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if [[ ! -f "$input_path" ]]; then
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echo "$input_path does not exist."
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echo "Aborting";
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exit 1;
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fi
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# check if the input file exists
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if [[ ! -f "$input_path" ]]; then
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echo "$input_path does not exist."
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echo "Aborting";
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exit 1;
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fi
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}
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function yes_or_no
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{
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read -p "$* [y/N]: " ans
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case "$ans" in
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[yY] | [yY]es ) return 0;;
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* ) echo "Aborting"; return 1;;
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esac
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read -p "$* [y/N]: " ans
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case "$ans" in
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[yY] | [yY]es ) return 0;;
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* ) echo "Aborting"; return 1;;
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esac
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}
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function run
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{
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arg_parse "$@";
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# print general information
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if [[ "$quiet" != 1 ]]; then
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echo "Compressing from ${bold}$input_path${normal} into \
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arg_parse "$@";
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# print general information
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if [[ "$quiet" != 1 ]]; then
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echo "Compressing from ${bold}$input_path${normal} into \
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${bold}$output_path${normal}."
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fi
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fi
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# define the base command
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base_command="
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gs -sDEVICE=pdfwrite \
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-dPDFSETTINGS=/prepress \
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-dNOPAUSE \
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-dBATCH ";
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# run the compression using ghostscript
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if [[ "$verbose" != 1 ]]; then
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ghostscript -sDEVICE=pdfwrite \
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-dCompatibilityLevel=1.4 \
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-dPDFSETTINGS=/prepress \
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-dNOPAUSE \
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-dQUIET \
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-dBATCH \
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-sOutputFile=$output_path \
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$input_path
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else
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echo "input_path=$input_path";
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echo "output_path=$output_path";
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echo "quiet=$quiet";
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echo "verbose=$verbose";
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echo "replace=$replace";
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echo " ";
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ghostscript -sDEVICE=pdfwrite \
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-dCompatibilityLevel=1.4 \
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-dPDFSETTINGS=/prepress \
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-dNOPAUSE \
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-dBATCH \
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-sOutputFile=$output_path \
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$input_path
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fi
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# catching errors
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if [[ "$?" != 0 ]]; then
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echo "Something went wrong with ghostscript.";
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echo "Aborting.";
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exit 1;
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fi
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# add compatibilty
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if [[ "$compatibility" == 1 ]]; then
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base_command+="-dCompatibilityLevel=1.4 ";
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fi
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# ask ghostsript to be quiet
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if [[ "$verbose" == 1 ]]; then
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base_command+="-dQUIET ";
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fi
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# add archive mode option
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if [[ "$archive" == 1 ]]; then
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base_command+="-dPDFA=2 -dPDFACompatibilityPolicy=1 "
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fi
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# add input and ouput paths
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base_command+="-sOutputFile=$output_path \
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$input_path"
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# run command
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echo $base_command;
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#eval $base_command;
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# catching errors
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if [[ "$?" != 0 ]]; then
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echo "Something went wrong with ghostscript.";
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echo "Aborting.";
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exit 1;
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fi
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# compute the compresion rate
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if [[ "$quiet" != 1 ]]; then
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#compute_compression;
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fi
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# compute the compresion rate
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if [[ "$quiet" != 1 ]]; then
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compute_compression;
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fi
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}
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function compute_compression
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{
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input_size=`du "$input_path" | cut -f1`
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output_size=`du "$output_path" | cut -f1`
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percentage=`echo "scale=1;$output_size / $input_size * 100" | bc -l`
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input_size_h=`du -h "$input_path" | cut -f1`
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output_size_h=`du -h "$output_path" | cut -f1`
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input_size=`du "$input_path" | cut -f1`
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output_size=`du "$output_path" | cut -f1`
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percentage=`echo "scale=1;$output_size / $input_size * 100" | bc -l`
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input_size_h=`du -h "$input_path" | cut -f1`
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output_size_h=`du -h "$output_path" | cut -f1`
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echo "Size reduced from ${bold}$input_size_h${normal} to \
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echo "Size reduced from ${bold}$input_size_h${normal} to \
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${bold}$output_size_h${normal} [$percentage %]"
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}
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