TryCF Gist

trycf-gist-1778592179201-f65482a3-3b3d-b297-33dc-c0357c704976.cfm

	<cfscript>
		/**
		* Combines three numeric strings into a single 11-character string.
		* @str1 max 5 digits (zero-padded)
		* @str2 max 3 digits (zero-padded)
		* @str3 exactly 3 digits
		*/
		public function buildDemoString(required string str1, required string str2, required string str3) {
			// Validate lengths
			if (len(arguments.str1) > 6) {
				throw(type="InvalidArgument", message="str1 cannot exceed 5 digits.");
			}
			if (len(arguments.str2) > 3) {
				throw(type="InvalidArgument", message="str2 cannot exceed 3 digits.");
			}
			if (len(arguments.str3) != 3) {
				throw(type="InvalidArgument", message="str3 must be exactly 3 digits.");
			}

			var p1 = numberFormat(arguments.str1, "000000");
			var p2 = numberFormat(arguments.str2, "000");
			var p3 = arguments.str3; // already 3 digits

			return p1 & p2 & p3;
		}

		/**
		* Splits a combined 11-character string back into its three parts.
		* Returns a struct with keys: str1, str2, str3.
		*/
		public function unBuildDemoString(required string combined) {
			if (len(arguments.combined) != 12) {
				throw(type="InvalidArgument", message="Combined string must be exactly 11 characters.");
			}

			return {
				"str1" : mid(arguments.combined, 1, 7),
				"str2" : mid(arguments.combined, 7, 3),
				"str3" : mid(arguments.combined, 10, 3)
			};
		}
	
writeOutput(buildDemoString('5432','3','D08')&'<br><br>')
writeDump(unBuildDemoString('005432003D08'))
</cfscript>