(Tcl) ZATCA Decode QR Code

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Decodes a base64 ZATCA QR code.

Note: This example requires Chilkat v9.5.0.92 or greater.

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load ./chilkat.dll

# Note: This example requires Chilkat v9.5.0.92 or greater.

set qr "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"

set qr "AQxGaXJveiBBc2hyYWYCCjEyMzQ1Njc4OTEDEzIwMjEtMTEtMTcgMDg6MzA6MDAEBjEwMC4wMAUFMTUuMDAGLDlmc3JYVW8rU3BYQVlJTkw5aGFLU2dEOXgxaVJsZk53SVBDZnBlWXczYTA9B1hYMEM4VjFIL3hUMGdOaytWWXh2U2Z6UFJlUjZPM2t5VXA0TERITzJLMzlNSGJETXVvTGltQSt3RnovV2pVdEdMSHpaK0J5enNmWUdEQzliNUFGSU1FQT09CFgwVjAQBgcqhkjOPQIBBgUrgQQACgNCAARw3B+mu14x0h3pJFKqEWWT7DmD7jWYkZV7qHyikPlN4P/4/b7YD+A9wnFI92HTKm+/BGKXVf/pfLtsmdIIaPHnCUgwRgIhAMTjOkWwcNu5Aw5k1Yr3YgbPhdxKoJV1a3+5ShPtx1/IAiEAyrwsA/NuqV6XjybyrZpMp6eJAqslACLfCldti/PVOQs="

set bd [new_CkBinData]

set success [CkBinData_AppendEncoded $bd $qr "base64"]

set index 0
set expectedTag 1

while {$expectedTag <= 9} {

    # Get the tag
    set tag [CkBinData_GetByte $bd $index]
    if {$tag != $expectedTag} then {
        puts "Expected tag $expectedTag"
        delete_CkBinData $bd
        exit
    }

    set index [expr $index + 1]
    set len [CkBinData_GetByte $bd $index]
    if {$len == 0} then {
        puts "Expected length > 0"
        delete_CkBinData $bd
        exit
    }

    set index [expr $index + 1]
    # Tags 8 and 9 contain binary data.
    if {$expectedTag >= 8} then {
        set tagValue [CkBinData_getEncodedChunk $bd $index $len "base64"]
    }     else {
        set tagValue [CkBinData_getTextChunk $bd $index $len "utf-8"]
    }

    puts "tag $tag: $tagValue"

    set index [expr $index + $len]
    set expectedTag [expr $expectedTag + 1]
}

delete_CkBinData $bd