blob: e301bb471651ae59a9e8b4c27b2bccb4576b19f8 (
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#!/bin/bash
###############################
# exposes library functions to modify properties in a property
#
# TODO function append_property
#
###############################
set -euo pipefail
if [[ "$OSTYPE" == "darwin"* ]]; then
SED_DISABLE_BACKUP=" ''"
else
SED_DISABLE_BACKUP=""
fi
function cnt_lines() {
FILE=$1
cat $1 | wc -l
}
function write_prop() {
PROPERTY=$1
VALUE=$2
FILE=$3
# uncomment below to help debug calls to set_property
#echo "setting property $PROPERTY to value $VALUE in $FILE"
echo "" >> $FILE
echo "${PROPERTY}=${VALUE}" >> $FILE
}
function set_property() {
PROPERTY=$1
VALUE=$2
FILE=$3
REGEXP="${1//\./\\\.}\s*="
if [ $(grep $REGEXP $FILE | wc -l) -eq 0 ]; then
write_prop $1 $2 $3
else
# delete line of specified property
LINE_COUNT=$(cnt_lines $FILE)
sed -i $SED_DISABLE_BACKUP "/${REGEXP}/d" $FILE
# add property if at least one line deleted
NEW_LINE_COUNT=$(cnt_lines $FILE)
if [ $LINE_COUNT -gt $NEW_LINE_COUNT ]; then
write_prop $1 $2 $3
fi
fi
}
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