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Appending escape characters to escape characters
plackowski posted a topic in AutoLISP, Visual LISP & DCL;; [INSERT INCEPTION SOUND EFFECTS HERE] ;; Preface: I've built a lisp routine that generates a script. The script then runs a SECOND lisp routine on a series of drawings. ;; I'm having serious trouble passing information from the first lisp routine to the second lisp routine. ;; The first lisp routine uses a DCL dialog box to gather user information, and the second lisp routine needs to apply this information to each drawing in a set. ;; I have assembled the information into a list of strings, which I'd like to pass as an argument into the second lisp (unless there's an easier way someone can share with me). ;; To do this, I've created the _StringifyList function, which creates a new list declaration string that gets written to the script file. ;; So here's the problem: ;; The strings in the arguments may contain quotes or backslashes since they are user entered. ;; The vl-string-translate commands I've added aren't properly appending extra backslash escape characters to make up for this. ;; Try running this example: (defun C:ListTest ( / *error* simpleList simpleListString) ;Return error descriptions to command line in the event of an error (defun *error* (/) (princ "\nInternal error") ) ;test strings are A,B,C ;to create a list: (setq simpleList (list "A" "B" "C")) (princ "simpleList: ") (princ simpleList) (princ "\n") ;result is not what we need: ;simpleList: (A B C) ;now lets wrap it with the stringify function: (setq simpleListString (_StringifyList simpleList)) (princ (strcat "simpleListString: " simpleListString "\n")) ;result is good, it can be written to a script as an argument now: ;simpleListString: (list "A" "B" "C") ;how about something more complicated though? ;test strings are one"quote, this\that, three"""quotes ;to create a list: (setq complexList (list "one\"quote" "this\\that" "three\"\"\"quotes")) (setq complexListString (_StringifyList complexList)) (princ (strcat "complexListString: " complexListString "\n")) ;result is bad. quotes have been replaced with backslashes, and backslashes haven't been duplicated. ;complexListString: (list "one\quote" "this\that" "three\\\quotes") ;what the result should look like (I think): ;complexListString: (list "one\"quote" "this\\that" "three\"\"\"quotes") (princ) ) ;; _StringifyList - plackowski ;; takes a list of strings and converts them to a declaration of a list of strings. ;; lst - [lst] A list of strings, like ("A" "B" "C") ;; str - [str] Output string in the format "(list "A" "B" "C")" (defun _StringifyList (lst / str) (setq str "(list") (foreach item lst ;any backslashes should be replaced with double slashes: \ -> \\ (setq item (vl-string-translate "\\" "\\\\" item)) ;any quotes in the string should be replaced with slash quotes to escape them: \" -> \\\" (setq item (vl-string-translate "\\\"" "\\\\\\\"" item)) (setq str (strcat str " \"" item "\"")) ) (setq str (strcat str ")")) )