Reading from _OUTPUT_connect - sas

Question

In SAS DI when I connect a user written transformation to an output table, the variable _OUTPUT_connect is assigned. In my case it looks something like this:
%let _OUTPUT_connect = DEFER=YES READBUFF=25000 DBCLIENT_MAX_BYTES=1 DB_LENGTH_SEMANTICS_BYTE=NO PATH=MY_PATH AUTHDOMAIN="MY_AUTH_DOMAIN"
Now I'm trying to extract the PATH and AUTHDOMAIN variables from _OUTPUT_connect. My solution for now is the following:
%let _authdomain = %sysfunc(scan(&_OUTPUT_connect,7," "));
%let _path = %sysfunc(scan(%sysfunc(scan(&_OUTPUT_connect,5," ")),2,"="));
This works but it breaks if the order of the _OUTPUT_connect variables changes.
I thought I'd use regex to match the paramater values: PATH=[match_this] and AUTHDOMAIN="[match_this]", but I have problems parsing the variable _OUTPUT_connect because it contains double quotes. When I manually assign _OUTPUT_connect without the double quotes I can do the following
data _null_;
re = prxparse('/PATH=(\w)*/');
string = "&_OUTPUT_connect";
position = prxmatch(re, string);
put position=;
matched_pattern=prxposn(re, 0, string);
put matched_pattern=;
run;
Output:
position=75
matched_pattern=PATH=A1091211_SAS_SRV
The problem however is that _OUTPUT_connect contains double quotes, and the regex function fails when the input string contains double quotes. Since _OUTPUT_connect is assigned automatically, I cannot change the format.
I've tried to remove the double quotes from _OUTPUT_connect using this %let unquoted =%sysfunc(translate(%quote(&test),' ','"'));. This does work, but it puts a whitespace in place of the double quotes.
Is there an easy way to retrieve the values of PATH and AUTHDOMAIN from _OUTPUT_connect?

Answer 1

You can extract the name value pairs of the connection string by using SCAN with modifiers.
Example:
data nvps(label='name value pairs' keep=name value);
s = 'name1=value1 name2="value2" name3="value 3"';
do index = 1 to countw(s,' ','q');
nvp = scan(s,index,' ','q');
name = scan(nvp,1,'=','q');
value = scan(nvp,2,'=','q');
output;
end;
run;