Panatrack ParseData Function

/****** Object:  UserDefinedFunction [dbo].[Panatrack_ParseData]    Script Date: 8/8/2022 1:51:50 PM ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO


CREATE FUNCTION [dbo].[Panatrack_ParseData]
    (
      @Input VARCHAR(8000),
      @TagName VARCHAR(30)
    )
RETURNS VARCHAR(8000)
AS BEGIN

    DECLARE @dataStartPos INT
    DECLARE @dataEndPos INT
    DECLARE @dataLength INT
    DECLARE @result VARCHAR(1000)

    DECLARE @startTag VARCHAR(30)
    DECLARE @endTag VARCHAR(30)
 
    SET @startTag = '[' + @TagName + ']'
    SET @endTag = '[/' + @TagName + ']'
 
    SET @dataStartPos = CHARINDEX(@startTag, @Input) 
    SET @dataLength = CHARINDEX(@endTag, @Input) - (@dataStartPos + LEN(@startTag))
    IF @dataStartPos = 0 
        SET @result = ''
    ELSE 
        BEGIN
            SET @result = SUBSTRING(@Input, (@dataStartPos + LEN(@startTag)), @dataLength)
        END
  
    RETURN @result
  END 
GO