antonscheffer / as_barcode

A PL/SQL package to create a QR-code, Aztec or datamatrix barcode.

as_barcode

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Supports QR-code, Aztec, data matrix, EAN-8, EAN-13, UPC-A, code39, code128 and Interleaved 2 of 5 (ITF)

as_barcode's Issues

calculated length of chunk IDAT too high by 4 bytes

Hi Anton,

awesome tool, thanks alot for putting it together !

Small note: I think the logic to calc the length of the chunk IDAT has a small typo, instead of "+ 4" it should read "- 4" (probably just a typo), i.e.

...
    return utl_raw.concat( '89504E470D0A1A0A' -- signature 
                         , '0000000D'
                         , t_ihdr
                         , crc32( t_ihdr )
                         , to_char( utl_raw.length( t_idat ) - 4, 'fm0XXXXXXX' ) 
                         , t_idat 
                         , crc32( t_idat ) 
                         , '0000000049454E44AE426082' -- IEND
                         );
...

As far as I can understand, the length of a chunk should only include the length of the data, not the chunk type, the length of the chunk or the CRC of the chunk (found this note here).

We stumbled across the issue because Oracle XML Publisher wouldn't render the PNG (while Oracle's BI Publisher would ;-)); after verifying the PNG file itself using pngcheck we found the issue.

thanks alot for looking into this!
Herbert

the package doesn't break text with carriage return into new lines for QR code

Hi,
I feed into the function AS_BARCODE.barcode('a\n'||CHR(13)||CHR(10)||'\Nb','QR')
the QR code generated seems doesn't include the line breaks. it show as a\n\ \Nb.
is this an issue?

Is there a way to set the size of the QR Barcode?

Hello,
Thank you for your incredible codes.... i want to ask you if there is a way to set the size of the qr barcode from the plsql

QR Not supported non latin encoding

Hi.
It works with latin encoding, with multilines, but generate non readable QR code with cyrillic text.

[Error] PLS-00201 (2398: 9): PLS-00201: identifier 'T_X2' must be declared

hi, thank for share , but body compile error with below,can you help ?
and can you please create qrcode sample plsql for us?

[Error] PLS-00201 (2398: 9): PLS-00201: identifier 'T_X2' must be declared
[Error] PLS-00201 (2403: 11): PLS-00201: identifier 'T_W2' must be declared
[Error] PLS-00201 (2405: 11): PLS-00201: identifier 'T_X1' must be declared
[Error] PLS-00201 (2406: 11): PLS-00201: identifier 'T_X2' must be declared
[Error] PLS-00201 (2407: 62): PLS-00201: identifier 'T_W2' must be declared
[Error] PLS-00201 (2412: 22): PLS-00201: identifier 'T_X1' must be declared
[Error] PLS-00201 (2413: 22): PLS-00201: identifier 'T_X2' must be declared
[Error] PLS-00201 (2414: 25): PLS-00201: identifier 'T_X1' must be declared
[Error] PLS-00201 (2415: 25): PLS-00201: identifier 'T_X2' must be declared
[Error] PLS-00201 (2416: 22): PLS-00201: identifier 'T_X1' must be declared

br,nolem

hi, this package can not create multibyte barcode

hi, i test your package after you update version , if we use single byte , qrcode is fine,
but i found if i use text with multi-byte language to create qrcode image ,ex:chinese
it will lost , and qrcode reader can not parse it .