PureBasic
Convert Embedded HTML Images to Multipart/Related CID References

Demonstrates how to convert HTML images that are inline/embedded within the HTML to CID references to multipart/related MIME parts.
Note: This example requires Chilkat v9.5.0.78 or greater.
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PureBasic
IncludeFile "CkEmail.pb"

Procedure ChilkatExample()

    success.i = 0

    ; This example assumes the Chilkat API to have been previously unlocked.
    ; See Global Unlock Sample for sample code.

    ; This example converts the following email with image data embedded directly in the HTML,
    ; to the MIME shown at the bottom of this page.
    ; If the HTML contains multiple embedded images, the call to email.ConvertInlineImages will convert all of them.

    ; MIME-Version: 1.0
    ; Date: Tue, 30 Apr 2019 11:36:34 +0200
    ; Message-ID: <E5DB5F8A65D671FB4822B22F5309411838F2FC93@PC0VDL0W013>
    ; Content-Type: text/html; charset="windows-1252"
    ; Content-Transfer-Encoding: quoted-printable
    ; X-Priority: 3 (Normal)
    ; From: <admin@chilkatsoft.com>
    ; To: Matt <matt@chilkat.io>
    ; Subject: Test
    ; 
    ; <html xmlns=3D"http://www.w3.org/1999/xhtml">
    ; <body><p>
    ; <img src=3D"data:image/jpeg;base64,/9j/4AAQSkZJRgABAQEA3ADcAAD/2=
    ; wBDAAIBAQEBAQIBAQECAgICAgQDAgICAgUEBAMEBgUGBgYFBgYGBwkIBgcJBwYGCAsICQoKCgoK=
    ; BggLDAsKDAkKCgr/2wBDAQICAgICAgUDAwUKBwYHCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgo=
    ; ...
    ; 4zzS3ww+5/8AyR//2Q=3D=3D" width=3D"58" height=3D"66" alt=3D"" style=3D"bord=
    ; er-width:0px;" /></body>
    ; </html>

    email.i = CkEmail::ckCreate()
    If email.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkEmail::ckLoadEml(email,"qa_data/eml/embedded_html_image.eml")

    CkEmail::ckConvertInlineImages(email)
    Debug CkEmail::ckGetMime(email)

    ; The MIME after moving the image data to a separate MIME sub-part:

    ; MIME-Version: 1.0
    ; Date: Tue, 30 Apr 2019 11:36:34 +0200
    ; Message-ID: <E5DB5F8A65D671FB4822B22F5309411838F2FC93@PC0VDL0W013>
    ; Content-Type: multipart/related; boundary="------------020808080005060904000806"
    ; X-Priority: 3 (Normal)
    ; From: <admin@chilkatsoft.com>
    ; To: Matt <matt@chilkat.io>
    ; Subject: Test
    ; 
    ; --------------020808080005060904000806
    ; Content-Type: text/html; charset=windows-1252
    ; Content-Transfer-Encoding: quoted-printable
    ; 
    ; <html xmlns=3D"http://www.w3.org/1999/xhtml">
    ; </head></head><body><p>
    ; <img src=3D"cid:CID-1f73052c-32a7-4abb-8e9d-0afb58c17eed@CHILKATSLICE" widt=
    ; h=3D"58" height=3D"66" alt=3D"" style=3D"border-width:0px;" /></body>
    ; </html>
    ; 
    ; 
    ; 
    ; --------------020808080005060904000806
    ; Content-Type: image/jpeg; name="image_95EA3073134C.jpeg"
    ; Content-Transfer-Encoding: base64
    ; Content-ID: <CID-1f73052c-32a7-4abb-8e9d-0afb58c17eed@CHILKATSLICE>
    ; 
    ; /9j/4AAQSkZJRgABAQEA3ADcAAD/2wBDAAIBAQEBAQIBAQECAgICAgQDAgICAgUEBAMEBgUGBgYF
    ; BgYGBwkIBgcJBwYGCAsICQoKCgoKBggLDAsKDAkKCgr/2wBDAQICAgICAgUDAwUKBwYHCgoKCgoK
    ; ...
    ; 5bmGF7e42pOwUxrFNEQOcLGw6vX2Yv7NfxbWLYfB67s84vrf/wCLoor8r424ZwGYZkqlSUk+VLRr
    ; /Jn2mS8QYzC0Woxi9eqf+aGr+zX8XUyW8K9/+f8Ag/8AjlO/4Zs+Ln/Qqf8Ak/b/APxyiivkXwPl
    ; H88/vj/8ifUR4zzS3ww+5/8AyR//2Q==
    ; 
    ; --------------020808080005060904000806--


    CkEmail::ckDispose(email)


    ProcedureReturn
EndProcedure