r8632: updates

[kmrcl.git] / strings.lisp

diff --git a/strings.lisp b/strings.lisp
index e9a73a3c9c7f1c3041680fc6cc9b5466bb08fe03..4ef18f0134e586755ab1cb9177e82ff53ca11b10 100644 (file)
--- a/strings.lisp
+++ b/strings.lisp
@@ -476,9 +476,9 @@ for characters in a string"
 
 
 (eval-when (:compile-toplevel :load-toplevel :execute)
-  (defvar +unambigous-charset+
+  (defvar +unambiguous-charset+
     "abcdefghjkmnpqrstuvwxyz123456789ABCDEFGHJKLMNPQSRTUVWXYZ")
-  (defconstant +unambigous-length+ (length +unambigous-charset+)))
+  (defconstant +unambiguous-length+ (length +unambiguous-charset+)))
 
 (defun random-char (&optional (set :lower-alpha))
   (ecase set
@@ -491,8 +491,8 @@ for characters in a string"
         (code-char (+ +char-code-lower-a+ n)))))
     (:upper-alpha
      (code-char (+ +char-code-upper-a+ (random 26))))
-    (:unambigous
-     (schar +unambigous-charset+ (random +unambigous-length+)))
+    (:unambiguous
+     (schar +unambiguous-charset+ (random +unambiguous-length+)))
     (:upper-lower-alpha
      (let ((n (random 52)))
        (if (>= n 26)
@@ -552,11 +552,24 @@ for characters in a string"
        
 
 (defun string-maybe-shorten (str maxlen)
-  (let ((len (length str)))
-    (if (<= len maxlen)
-       str
-      (concatenate 'string (subseq str 0 (- maxlen 3)) "..."))))
+  (string-elide str maxlen :end))
 
+(defun string-elide (str maxlen position)
+  (declare (fixnum maxlen))
+  (let ((len (length str)))
+    (declare (fixnum len))
+    (cond
+     ((<= len maxlen)
+      str)
+     ((<= maxlen 3)
+      "...")
+     ((eq position :middle)
+      (multiple-value-bind (mid remain) (truncate maxlen 2)
+       (let ((end1 (- mid 1))
+             (start2 (- len (- mid 2) remain))) 
+         (concatenate 'string (subseq str 0 end1) "..." (subseq str start2)))))
+     ((or (eq position :end) t)
+      (concatenate 'string (subseq str 0 (- maxlen 3)) "...")))))
 
 (defun shrink-vector (str size)
   #+allegro
@@ -627,3 +640,10 @@ for characters in a string"
         (t
          (setq in-white nil)
          (write-char c stream)))))))
+
+(defun string->list (string)
+  (let ((eof (list nil)))
+    (with-input-from-string (stream string)
+      (do ((x (read stream nil eof) (read stream nil eof))
+           (l nil (cons x l)))
+          ((eq x eof) (nreverse l))))))