I am using a data analysis package that exposes a Regex function for string parsing. I am trying to parse a response from a website that is in the format...
key1=val1&key2=val2&key3=val3 ...
[There is the possibility that the keys and values may be percent encoded, but the current return values are not, the current return values are tokens and other info that are alphanumeric].
I understand this data to be www-form-urlencoded, or alternatively it might be known as query string format.
The object is to extract the value for a given key, if the order of the keys cannot be relied upon. For example, I might know that one of the keys I should receive is "token", so what regex pattern can I use to extract the value for the key "token"? I have searched for this but cannot find anything that does what I need, but if there is a duplicate question, apologies in advance.