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How to encode the string [)>\x1e06\x1dKRUA144OZHIAIU.433642.034REH\x1e\x04 in pst-barcode, where \x1e is ASCII character 001E, \x1d is ASCII character 001D, and \x04 is ASCII character 004.

\documentclass{article}
\usepackage{fontspec}
\usepackage{pst-barcode}
\usepackage{auto-pst-pdf}

\begin{document}
\begin{pspicture}(1in,1in)
    %\psbarcode{[)>\x1e06\x1dKRUA144OZHIAIU.433642.034REH\x1e\x04}{width=1.0 height=1.0}
{qrcode}
\end{pspicture}
\end{document}

Compiling using the command

 xelatex.exe -synctex=1 -interaction=nonstopmode "document"

It gives an error:

MiKTeX GPL Ghostscript 9.25: Unrecoverable error, exit code 1

I read the documentation; on page 58 there is an example, but it's for a different type of code, and I specifically need to compile a QR code in XeLaTeX.

Thank you in advance.

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2 Answers 2

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With option parse you can input the ASCII control characters GS, RS and EOT using the ^NNN syntax. NNN in this case has to be a decimal not a hexadecimal! See section 5.2.10 of the pst-barcode example for more information. Some extra effort is needed to have the ) in the text:

\documentclass{article}
\usepackage{fontspec}
\usepackage{pst-barcode}
\usepackage{auto-pst-pdf}

\begin{document}
Complicated:

\begin{pspicture}(1in,1in)
\expandafter\psbarcode\expandafter{\detokenize{[\)>^03006^029KRUA144OZHIAIU.433642.034REH^030^004}}
  {width=1.0 height=1.0 parse}{qrcode}
\end{pspicture}

Easy:

\begin{pspicture}(1in,1in)
  \psbarcode{[^041>^03006^029KRUA144OZHIAIU.433642.034REH^030^004}
  {width=1.0 height=1.0 parse}{qrcode}
\end{pspicture}
\end{document}

qrcode as expected

BTW: As you say, you are using XeLaTeX (which is not recommended any longer), you won't need auto-pst-pdf.

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  • Apparently, I didn't read the documentation carefully enough. Indeed, everything is described in section 5.2.10. Thank you very much for pointing that out to me. Commented Oct 7 at 19:29
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    Could you tell me where I can read about XeLaTeX no longer being recommended, and what should be used instead of XeLaTeX? Commented Oct 7 at 19:33
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    @АнтонБрюзгин See, e.g., tex.stackexchange.com/questions/752081/… or texdev.net/2024/11/05/engine-news-from-the-latex-project. You should switch to LuaLaTeX. If you have problems with the change, you can ask questions. Commented Oct 8 at 6:38
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You could use the qrcode package:

\documentclass{article}
\usepackage{fontspec}
\usepackage{qrcode}

\begin{document}
\qrcode{qrcode}
\end{document}

\qrcode{<contents>} will encode <contents> as a QR code.

To encode your string you can use ^^ (this is a rot64 in TeX, so ^^@ becomes NUL), so your \x1e in that notation is ^^^. However \qrcode tries to be clever and reads its argument somewhat verbatimly so it tries to break the ^^-notation. We can circumvent that by tokenizing the input before \qrcode reads it. Then we get errors because ^^^ etc. are invalid characters, which we can fix by changing their category codes.

\documentclass{article}
\usepackage{fontspec}
\usepackage{qrcode}

\begin{document}
\begingroup
\catcode`\^^^=12
\catcode`\^^]=12
\catcode`\^^D=12
\unexpanded{%
  \endgroup
\qrcode{[)>^^^06^^]KRUA144OZHIAIU.433642.034REH^^^^^D}}
\end{document}

enter image description here

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  • @Teepeemm see edit. Commented Oct 7 at 12:21
  • I cannot use the qrcode package. I need pdf417, datamatrix, QR-code and possibly other types of codes in one file. Thank you very much for the solution. Where only QR-Code can be used, I will use this solution. Commented Oct 7 at 12:23
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    @АнтонБрюзгин you should be able to continue using pst-barcode for the non-QR-codes. Commented Oct 7 at 12:28
  • Yes, I understand that I can use pst-barcode for other codes and qrcode for QR codes, but I wanted to minimize dependencies. However, if that's not possible, I will use both packages. Commented Oct 7 at 12:46

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