scripts/remove_pdf_watermark.sh

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#!/bin/sh
WATER_PDF_FILE="${1}"
OLD_WATER="${2}"
if [ -z "${3}" ]; then
NEW_WATER=""
else
NEW_WATER="${3}"
fi
if [ -f "${WATER_PDF_FILE}" ]; then
printf '%s\n' "Replace '${OLD_WATER}' with '${NEW_WATER}' for the PDF file: ${WATER_PDF_FILE}"
BASE_DIR=$(dirname ${WATER_PDF_FILE})
BASE_NAME=$(basename ${WATER_PDF_FILE})
UNCOMPRESS_PDF_FILE="${BASE_DIR}/uncompress_${BASE_NAME}"
UNWATER_PDF_FILE="${BASE_DIR}/unwater_${BASE_NAME}"
command pdftk "${WATER_PDF_FILE}" output "${UNCOMPRESS_PDF_FILE}" uncompress
sed -e "s/${OLD_WATER}/${NEW_WATER}/g" "${UNCOMPRESS_PDF_FILE}" >"${UNWATER_PDF_FILE}"
#sed -e "s/UNIVERSITE DE RENNES 1/TEST/g" <"${WATER_PDF_FILE}" >"${UNWATER_PDF_FILE}"
command pdftk "${UNWATER_PDF_FILE}" output "${WATER_PDF_FILE}" compress
exit 0
else
printf '%s\n' "Error with the first arg: ${1}"
exit 1
fi