add a remove_white(...) method

src/convert/text_private.h

@@ -5,7 +5,7 @@
  */
 
 /*
- * Copyright (c) 2021-2022, Tomasz Sowa
+ * Copyright (c) 2021-2024, Tomasz Sowa
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,7 +35,6 @@
 #ifndef headerfile_pikotools_src_convert_text_private
 #define headerfile_pikotools_src_convert_text_private
 
-#include <string>
 #include "text.h"
 
 
@@ -401,6 +400,31 @@ void trim_generic(StringType & s, wchar_t c)
 }
 
 
+template<typename StringType>
+void remove_white_generic(StringType & s, bool check_additional_chars, bool treat_new_line_as_white)
+{
+	size_t i = s.size();
+	size_t white_len = 0;
+
+	while( i-- > 0 )
+	{
+		if( is_white(s[i], check_additional_chars, treat_new_line_as_white) )
+		{
+			white_len += 1;
+		}
+		else
+		if( white_len > 0 )
+		{
+			s.erase(i+1, white_len);
+			white_len = 0;
+		}
+	}
+
+	if( white_len > 0 )
+	{
+		s.erase(0, white_len);
+	}
+}
 
 
 } // namespace pt_private