Add input waveform sanitization regex.

OOequipment/FunctionGenerator.m

@@ -12,7 +12,25 @@ classdef FunctionGenerator < Equipment
     end
     
     methods
+		function wf = get.waveform(fg)
+			wf = fg.query('FUNCtion:SHAPe?')
+			
+		end
     end
+	
+	methods (Static)
+		function wf = getWave(inwf)
+			wf = regexp(inwf, '(?i)(si|sq|[trndu1-7]|s)', 'match', 'once');
+
+			if isempty(wf)
+				error('Invalid waveform.');
+			end
+
+			wf = regexprep(wf, {'^(1|si|(?-i)s)$', '^(2|sq|(?-i)S)$', '^[3t]$', '^[4r]$', '^[5n]$', '^[6d]$', '^[7u]$'}, ...
+                {'sinusoid', 'square', 'triangle', 'ramp', 'noise', 'dc', 'user'}, 'ignorecase');
+
+		end
+	end
     
 end