Added the move constructor to cString for better performance

CONTRIBUTORS

@@ -2560,6 +2560,7 @@ Markus Ehrnsperger <markus.ehrnsperger@googlemail.com>
  for making using a dummy OSD if no OSD provider is available not be considered an error
  any more
  for removing syslog calls in child process after fork()
+ for adding the move constructor to cString for better performance
 
 Werner Färber <w.faerber@gmx.de>
  for reporting a bug in handling the cPluginManager::Active() result when pressing

HISTORY

@@ -9863,7 +9863,7 @@ Video Disk Recorder Revision History
 - The recording info of the default skins now shows the frame parameters of the
   recording at the end of the description (if such information is available).
 
-2024-01-19:
+2024-01-20:
 
 - Changed installing config files to handle potentially broken 'cp -n'.
 - Fixed height calculation in progress display (thanks to Matthias Senzel).
@@ -9877,3 +9877,5 @@ Video Disk Recorder Revision History
   (thanks to Matthias Senzel).
 - Fixed an unnecessary double display of menu items in the Recordings menu (thanks to
   Matthias Senzel).
+- Added the move constructor to cString for better performance (thanks to Markus
+  Ehrnsperger).

tools.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: tools.c 5.8 2023/12/29 10:24:29 kls Exp $
+ * $Id: tools.c 5.9 2024/01/20 13:59:55 kls Exp $
  */
 
 #include "tools.h"
@@ -1106,6 +1106,14 @@ cString &cString::operator=(const cString &String)
   return *this;
 }
 
+cString &cString::operator=(cString &&String)
+{
+  free(s);
+  s = String.s;
+  String.s = NULL;
+  return *this;
+}
+
 cString &cString::operator=(const char *String)
 {
   if (s == String)

tools.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: tools.h 5.7 2023/12/29 10:21:59 kls Exp $
+ * $Id: tools.h 5.8 2024/01/20 13:59:55 kls Exp $
  */
 
 #ifndef __TOOLS_H
@@ -182,11 +182,13 @@ public:
   cString(const char *S = NULL, bool TakePointer = false);
   cString(const char *S, const char *To); ///< Copies S up to To (exclusive). To must be a valid pointer into S. If To is NULL, everything is copied.
   cString(const cString &String);
+  cString(cString &&String): s(String.s) { String.s = NULL; }
   virtual ~cString();
   operator const void * () const { return s; } // to catch cases where operator*() should be used
   operator const char * () const { return s; } // for use in (const char *) context
   const char * operator*() const { return s; } // for use in (const void *) context (printf() etc.)
   cString &operator=(const cString &String);
+  cString &operator=(cString &&String);
   cString &operator=(const char *String);
   cString &Append(const char *String);
   cString &Append(char c);