-# basic functions
-die() {
- echo "$*" >/dev/stderr
- exit 1
-}
-debug() { #change to false to disable debugging
- #true && echo "$*" >>debug
- true && [ -n "$*" ] && echo -E "$*" >>/dev/stderr
- true && [ -z "$*" ] && tee /dev/stderr
-}
-
-# this program is supposed to be symlinked into a http root directory
-# we will use the http root as object storage (data directory) and call sub
-# programs from the directory in which the real executable resides
-# therefore we need to identify the code and data directories _EXEC and _DATA
-call=$0
-real=$call
-while [ -L "$real" ]; do
- real="$(stat -c %N "$real" |sed -r "s:..*. -> .(.*).$:\1:")"
-done
-
-_EXEC="$(dirname "$real")" #execution directory
-_DATA="$(dirname "$call")" #storage directory
+for n in "$@"; do case ${n%%=*} in
+ data) _DATA="${n#data=}";;
+ exec) _EXEC="${n#exec=}";;
+ noerr) exec 2>&-;;
+esac; done