(SQL Server) Decode from Binary Encoding and Append String

Demonstrates how to decode from a binary encoding (base64, hex, url, etc.) and then append the decoded string to a Chilkat StringBuilder object.

Note: This example uses the new DecodeAndAppend method added in Chilkat v9.5.0.87.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    -- We have the string "MÆRSK" in two forms:

    -- This is the URL encoding of the windows-1252 representation.
    DECLARE @nameWindows1252UrlEncoded nvarchar(4000)
    SELECT @nameWindows1252UrlEncoded = 'M%C6RSK'

    -- This is the URL encoding of the utf-8 representation.
    DECLARE @nameUtf8UrlEncoded nvarchar(4000)
    SELECT @nameUtf8UrlEncoded = 'M%C3%86RSK'

    -- Note that the result of loading a string into a string object 
    -- is the same if we correctly specify the underlying charset encoding.
    -- In the above example, we have the same string, but in different charset encodings
    -- subsequently URL encoded.
    DECLARE @sb1 int
    -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sb1 OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int
    EXEC sp_OAMethod @sb1, 'DecodeAndAppend', @success OUT, @nameWindows1252UrlEncoded, 'url', 'windows-1252'

    DECLARE @sb2 int
    -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sb2 OUT

    EXEC sp_OAMethod @sb2, 'DecodeAndAppend', @success OUT, @nameUtf8UrlEncoded, 'url', 'utf-8'

    -- sb1 and sb2 both hold the same string.
    DECLARE @bEqual int
    EXEC sp_OAMethod @sb1, 'ContentsEqualSb', @bEqual OUT, @sb2, 1

    PRINT 'bEqual = ' + @bEqual

    -- We can see the string is "MÆRSK" in both cases.
    EXEC sp_OAMethod @sb1, 'GetAsString', @sTmp0 OUT
    PRINT @sTmp0
    EXEC sp_OAMethod @sb2, 'GetAsString', @sTmp0 OUT
    PRINT @sTmp0

    EXEC @hr = sp_OADestroy @sb1
    EXEC @hr = sp_OADestroy @sb2


END
GO