+HEADER(){
+ # Read value of header line. Use this instead of
+ # referencing HTTP_* environment variables.
+ if [ -n "${cgilite_headers+x}" ]; then
+ printf %s "$cgilite_headers" \
+ | sed -rn 's;^'"${1}"': ([^\r]+)\r?$;\1;i; tX; d; :X;p;q;'
+ else
+ eval "printf %s \"\$HTTP_$(printf %s "${1}" |tr a-z A-Z |tr -c A-Z _)\""
+ fi
+}
+
+HEX_DECODE(){
+ printf "$(printf %s "$1" \
+ | sed -r '
+ s;\\;\\\\;g; :x; s;%([^0-9A-F]);\\045\1;g; tx;
+ # Hexadecimal { %00 - %FF } will be transformed to octal { \000 - \377 } for posix printf
+ s;%[0123].;&\\0;g; s;%[4567].;&\\1;g; s;%[89AB].;&\\2;g; s;%[CDEF].;&\\3;g;
+ s;%[048C][0-7]\\.;&0;g; s;%[048C][89A-F]\\.;&1;g; s;%[159D][0-7]\\.;&2;g; s;%[159D][89A-F]\\.;&3;g;
+ s;%[26AE][0-7]\\.;&4;g; s;%[26AE][89A-F]\\.;&5;g; s;%[37BF][0-7]\\.;&6;g; s;%[37BF][89A-F]\\.;&7;g;
+ s;%.[08](\\..);\10;g; s;%.[19](\\..);\11;g; s;%.[2A](\\..);\12;g; s;%.[3B](\\..);\13;g;
+ s;%.[4C](\\..);\14;g; s;%.[5D](\\..);\15;g; s;%.[6E](\\..);\16;g; s;%.[7F](\\..);\17;g;
+ ')"
+}
+