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#!/usr/bin/env bash
# will stop the script for any error
set -e
me="$0"
name="$1"
chart="$2"
conf="$3"
can_diff=1
tmp1="`mktemp`"
tmp2="`mktemp`"
myset() {
set | grep -v "^_=" | grep -v "^PIPESTATUS=" | grep -v "^BASH_LINENO="
}
# save 2 'set'
myset >"$tmp1"
myset >"$tmp2"
# make sure they don't differ
diff "$tmp1" "$tmp2" >/dev/null 2>&1
if [ $? -ne 0 ]
then
# they differ, we cannot do the check
echo >&2 "$me: cannot check with diff."
can_diff=0
fi
# do it again, now including the script
myset >"$tmp1"
# include the plugin and its config
if [ -f "$conf" ]
then
. "$conf"
if [ $? -ne 0 ]
then
echo >&2 "$me: cannot load config file $conf"
rm "$tmp1" "$tmp2"
exit 1
fi
fi
. "$chart"
if [ $? -ne 0 ]
then
echo >&2 "$me: cannot load chart file $chart"
rm "$tmp1" "$tmp2"
exit 1
fi
# remove all variables starting with the plugin name
myset | grep -v "^$name" >"$tmp2"
if [ $can_diff -eq 1 ]
then
# check if they are different
# make sure they don't differ
diff "$tmp1" "$tmp2" >&2
if [ $? -ne 0 ]
then
# they differ
rm "$tmp1" "$tmp2"
exit 1
fi
fi
rm "$tmp1" "$tmp2"
exit 0
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