chickadee » sxml-transforms » make-char-quotator

make-char-quotator quot-rulesprocedure

Given QUOT-RULES, an assoc list of (char . string) pairs, return a quotation procedure. The returned quotation procedure takes a string and returns either a string or a list of strings. The quotation procedure check to see if its argument string contains any instance of a character that needs to be encoded (quoted). If the argument string is "clean", it is returned unchanged. Otherwise, the quotation procedure will return a list of string fragments. The input straing will be broken at the places where the special characters occur. The special character will be replaced by the corresponding encoding strings.

For example, to make a procedure that quotes special HTML characters, do:

    '((#\< . "&lt;") (#\> . "&gt;") (#\& . "&amp;") (#\" . "&quot;")))