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vcf_compressor/vcf_compressor.sh
Rodolphe Breard 2885143d58 Fixing a size detection bug.
The conditions used to determine whether or not an image have to be
processed depending on its size were boggus. This commit fixes the
issue, images are now processed as they should.
2015-09-12 19:03:38 +02:00

118 lines
2.8 KiB
Bash
Executable file

#!/bin/bash
## Copyright (c) 2015 Rodolphe Breard
##
## This program is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program. If not, see <http://www.gnu.org/licenses/>.
##
set -euo pipefail
IFS=$'\n\t'
version () {
echo "VCF Compressor 0.1.0-dev"
exit 0
}
usage () {
exit_status="${1:-1}"
echo "Usage: vcf_compressor [OPTION]... VCF_FILE"
echo ""
echo "Options:"
echo " -o, --output"
echo " --version"
echo " -h, --help"
exit "$exit_status"
}
raw_img () {
line="$1"
echo "$line" | cut -d ":" -f2 | base64 -d
}
compress_photo () {
line="$1"
max_width="300"
max_height="300"
prefix=$(echo "$line" | cut -d ":" -f1)
width=$(raw_img "$line" | identify -format '%w' -)
height=$(raw_img "$line" | identify -format '%h' -)
if [ "$width" -gt "$max_width" ] || [ "$height" -gt "$max_height" ] ; then
picture=$(raw_img "$line" | convert "-" -quality 50 -resize "${max_width}x${max_height}>" "-" | base64 -w0)
echo "$prefix:$picture"
else
echo "$line"
fi
}
process_line () {
line="$1"
echo "$line" | egrep "^PHOTO;" | grep ";ENCODING=b;" >/dev/null 2>&1
if [ $? -eq 0 ]; then
compress_photo "$line"
else
echo "$line"
fi
}
input_file=""
output_file=""
while :; do
test $# -gt 0 || break
case "$1" in
-o|--output)
if [ -n "$2" ]; then
output_file="$2"
shift 2
continue
else
usage
fi
;;
--version)
version
;;
-h|--help)
usage 0
;;
*)
if [ -z "$input_file" ]; then
input_file="$1"
shift
continue
else
usage
fi
;;
esac
done
test -z "$input_file" && usage
if [ ! -f "$input_file" ]; then
echo "$input_file: file not found"
exit 1
fi
if [ -z "$output_file" ]; then
dir=$(dirname "$input_file")
name=$(basename "$input_file" ".vcf")
output_file="$dir/$name.new.vcf"
fi
echo -n > "$output_file"
while IFS='' read -r line || [[ -n "$line" ]]; do
line=$(process_line "$line")
echo "$line" >> "$output_file"
done < "$input_file"