X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=strings.lisp;h=1832ff2a5dfa58f94564ee87f7b59587527c7b6e;hb=d60bf2d464b393bdff8482bcaacd8d49957467ce;hp=7310bef870c744d9e4bf2a662e8f0f0a3ca50da0;hpb=61100bfd2f0176c743db058160316a59441ce352;p=kmrcl.git

diff --git a/strings.lisp b/strings.lisp
index 7310bef..1832ff2 100644
--- a/strings.lisp
+++ b/strings.lisp
@@ -7,7 +7,7 @@
 ;;;; Programmer:    Kevin M. Rosenberg
 ;;;; Date Started:  Apr 2000
 ;;;;
-;;;; $Id: strings.lisp,v 1.52 2003/08/12 06:37:53 kevin Exp $
+;;;; $Id$
 ;;;;
 ;;;; This file, part of KMRCL, is Copyright (c) 2002 by Kevin M. Rosenberg
 ;;;;
@@ -153,6 +153,8 @@
 (defun is-string-empty (str)
   (zerop (length str)))
 
+(defvar *whitespace-chars* '(#\space #\tab #\return #\linefeed))
+
 (defun is-char-whitespace (c) 
   (declare (character c) (optimize (speed 3) (safety 0)))
   (or (char= c #\Space) (char= c #\Tab) (char= c #\Return)
@@ -162,6 +164,15 @@
   "Return t if string is all whitespace"
   (every #'is-char-whitespace str))
 
+(defun string-right-trim-whitespace (str)
+  (string-right-trim *whitespace-chars* str))
+
+(defun string-left-trim-whitespace (str)
+  (string-left-trim *whitespace-chars* str))
+
+(defun string-trim-whitespace (str)
+  (string-trim *whitespace-chars* str))
+
 (defun replaced-string-length (str repl-alist)
   (declare (simple-string str)
 	   (optimize (speed 3) (safety 0) (space 0)))
@@ -591,3 +602,20 @@ for characters in a string"
         (push (subseq string token-start token-end) tokens)))))
 
 
+(defun match-unique-abbreviation (abbr strings)
+  "Returns position of ABBR in STRINGS. ABBR may be a unique abbreviation.
+Returns NIL if no match found."
+  (let ((len (length abbr))
+	(matches nil))
+    (dotimes (i (length strings))
+      (let* ((s (nth i strings))
+	     (l (length s)))
+	(cond
+	  ((= len l)
+	   (when (string= abbr s)
+	     (push (cons s i) matches)))
+	  ((< len l)
+	   (when (string= abbr (subseq s 0 len))
+	     (push (cons s i) matches))))))
+    (when (= 1 (length matches))
+      (cdr (first matches)))))