From 05d0c316f4f6b60b297c0d01b9b8e603f5cd0dd2 Mon Sep 17 00:00:00 2001
From: kevin <kevin@larke.org>
Date: Thu, 19 Sep 2024 15:06:27 -0400
Subject: [PATCH] cwText.h/cpp : Added removeTrailingWhitespace()

---
 cwText.cpp | 24 ++++++++++++++++++++++++
 cwText.h   |  4 +++-
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/cwText.cpp b/cwText.cpp
index 2ae2f89..811a8de 100644
--- a/cwText.cpp
+++ b/cwText.cpp
@@ -185,6 +185,30 @@ const char* cw::lastMatchChar( const char* s, char c )
   return lastMatchChar((char*)s,c);
 }
 
+char* cw::removeTrailingWhitespace( char* s )
+{
+  char* s0;
+  unsigned sn;
+  
+  if( s == nullptr )
+    return nullptr;
+
+  if((sn = textLength(s)) == 0 )
+    return s;
+
+  s0 = s + (sn-1);
+
+  for(; s0>=s; --s0)
+  {
+    if( !isspace(*s0) )
+      break;
+    *s0 = 0;
+  }
+
+  return s;
+}
+
+
 bool cw::isInteger( const char* s )
 {
   for(; *s; ++s)
diff --git a/cwText.h b/cwText.h
index 89a8bf1..f749882 100644
--- a/cwText.h
+++ b/cwText.h
@@ -70,7 +70,9 @@ namespace cw
   
   // Find the last occurrent of 'c' in s[]. 
   char*       lastMatchChar( char* s, char c ); 
-  const char* lastMatchChar( const char* s, char c ); 
+  const char* lastMatchChar( const char* s, char c );
+
+  char*       removeTrailingWhitespace( char* s );
   
   bool isInteger( const char* );        // text contains only [0-9]
   bool isReal( const char* );           // text contains only [0-9] with one decimal place