1 files changed, 60 insertions, 0 deletions
diff --git a/glcdgraphics/common.c b/glcdgraphics/common.c
new file mode 100644
index 0000000..8942424
--- /dev/null
+++ b/glcdgraphics/common.c
@@ -0,0 +1,60 @@
+/*
+ * GraphLCD graphics library
+ *
+ * common.c  -  various functions
+ *
+ * This file is released under the GNU General Public License. Refer
+ * to the COPYING file distributed with this package.
+ *
+ * (c) 2004 Andreas Regel <andreas.regel AT powarman.de>
+ */
+
+#include <ctype.h>
+
+#include "common.h"
+
+
+namespace GLCD
+{
+
+void clip(int & value, int min, int max)
+{
+    if (value < min)
+        value = min;
+    if (value > max)
+        value = max;
+}
+
+void sort(int & value1, int & value2)
+{
+    if (value2 < value1)
+    {
+        int tmp;
+        tmp = value2;
+        value2 = value1;
+        value1 = tmp;
+    }
+}
+
+std::string trim(const std::string & s)
+{
+	std::string::size_type start, end;
+
+	start = 0;
+	while (start < s.length())
+	{
+		if (!isspace(s[start]))
+			break;
+		start++;
+	}
+	end = s.length() - 1;
+	while (end >= 0)
+	{
+		if (!isspace(s[end]))
+			break;
+		end--;
+	}
+	return s.substr(start, end - start + 1);
+}
+
+} // end of namespace