[gnoduino] Added remove methods to WString

[Lucian Langa <lucilanga src gnome org>]

commit 5305235fdf57ef00aa4915645b8a05a11c081c0c
Author: Ryan Esteves <snargledorf gmail com>
Date:   Wed Jun 5 14:08:59 2013 -0400

    Added remove methods to WString

 hardware/arduino/cores/arduino/WString.cpp |   16 ++++++++++++++++
 hardware/arduino/cores/arduino/WString.h   |    2 ++
 2 files changed, 18 insertions(+), 0 deletions(-)
---
diff --git a/hardware/arduino/cores/arduino/WString.cpp b/hardware/arduino/cores/arduino/WString.cpp
index c6839fc..aab2a54 100644
--- a/hardware/arduino/cores/arduino/WString.cpp
+++ b/hardware/arduino/cores/arduino/WString.cpp
@@ -604,6 +604,22 @@ void String::replace(const String& find, const String& replace)
        }
 }
 
+void String::remove(unsigned int index){
+       if (index >= len) { return; }
+       int count = len - index;
+       remove(index, count);
+}
+
+void String::remove(unsigned int index, unsigned int count){
+       if (index >= len) { return; }
+       if (count <= 0) { return; }
+       if (index + count > len) { count = len - index; }
+       char *writeTo = buffer + index;
+       len = len - count;
+       strncpy(writeTo, buffer + index + count,len - index);
+       buffer[len] = 0;
+}
+
 void String::toLowerCase(void)
 {
        if (!buffer) return;
diff --git a/hardware/arduino/cores/arduino/WString.h b/hardware/arduino/cores/arduino/WString.h
index 642b016..b587a3d 100644
--- a/hardware/arduino/cores/arduino/WString.h
+++ b/hardware/arduino/cores/arduino/WString.h
@@ -164,6 +164,8 @@ public:
        // modification
        void replace(char find, char replace);
        void replace(const String& find, const String& replace);
+       void remove(unsigned int index);
+       void remove(unsigned int index, unsigned int count);
        void toLowerCase(void);
        void toUpperCase(void);
        void trim(void);