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• Html-encoding

Html-encode-string

(html-encode-string x tabsize) converts the string x into HTML, and returns the result as a new string. Tracks the column number to handle tab characters.

Signature

(html-encode-string x tabsize) → html-encoded

Arguments

x — Guard (stringp x).

tabsize — Guard (posp tabsize).

Returns

html-encoded — Type (stringp html-encoded).

Definitions and Theorems

Function: html-encode-string

(defun html-encode-string (x tabsize)
       (declare (xargs :guard (and (stringp x) (posp tabsize))))
       (let ((acl2::__function__ 'html-encode-string))
            (declare (ignorable acl2::__function__))
            (b* ((x (mbe :logic (str-fix x) :exec x))
                 ((mv ?col acc)
                  (html-encode-string-aux x 0 (length x)
                                          0 tabsize nil)))
                (rchars-to-string acc))))

Theorem: stringp-of-html-encode-string

(defthm stringp-of-html-encode-string
        (b* ((html-encoded (html-encode-string x tabsize)))
            (stringp html-encoded))
        :rule-classes :type-prescription)

Theorem: html-encode-string-of-str-fix-x

(defthm html-encode-string-of-str-fix-x
        (equal (html-encode-string (str-fix x) tabsize)
               (html-encode-string x tabsize)))

Theorem: html-encode-string-streqv-congruence-on-x

(defthm html-encode-string-streqv-congruence-on-x
        (implies (streqv x x-equiv)
                 (equal (html-encode-string x tabsize)
                        (html-encode-string x-equiv tabsize)))
        :rule-classes :congruence)

Theorem: html-encode-string-of-pos-fix-tabsize

(defthm html-encode-string-of-pos-fix-tabsize
        (equal (html-encode-string x (acl2::pos-fix tabsize))
               (html-encode-string x tabsize)))

Theorem: html-encode-string-pos-equiv-congruence-on-tabsize

(defthm html-encode-string-pos-equiv-congruence-on-tabsize
        (implies (acl2::pos-equiv tabsize tabsize-equiv)
                 (equal (html-encode-string x tabsize)
                        (html-encode-string x tabsize-equiv)))
        :rule-classes :congruence)