From: Kevin M. Rosenberg <kevin@rosenberg.net>
Date: Wed, 10 Sep 2003 05:44:04 +0000 (+0000)
Subject: r7794: add whitespace trim functions
X-Git-Tag: v1.96~130
X-Git-Url: http://git.kpe.io/?p=kmrcl.git;a=commitdiff_plain;h=b63abea0b53984f96a17b89011e9ca7e6b98602e

r7794: add whitespace trim functions
---

diff --git a/strings.lisp b/strings.lisp
index 03d9b66..87d3254 100644
--- a/strings.lisp
+++ b/strings.lisp
@@ -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)))