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Does anyone know of a simple way to produce the PostScript corresponding to a syntax-highlighted version of a source file that can be piped directly to a PostScript printer?

As the wording of the question above probably suggests, I'm looking for something that I can run from the command line. I'm thinking of an interaction like:

% syntax_highlight <SOURCE_FILE> | lp

...with command-line switches as needed, etc.

The best I've found so far is a Unix utility called highlight, but it has problems. The most serious of it is that it doesn't have an option to output PostScript directly. (Since highlight does support LaTeX output, I tried to patch together a script that would automate the process of generating the PostScript file via *.tex => *.dvi => *.ps, but the visual appearance of the final result is awful, much worse than it is for the HTML file that highlight generates for the same source code input.)

Thanks!

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3 Answers 3

up vote 11 down vote accepted

You can use vim.

vim -c hardcopy -c quit /path/to/file

This will print the file and quit immediately. By default, vim prints with syntax highlighting.

If you need to print from stdout of some command, you can do this:

cat some_file.c | vim -c hardcopy -c 'quit!' -

If you want to save the .ps for later, you can do that by adding redirection to the hardcopy command, like so:

vim -c 'hardcopy > /path/to/saved.ps' -c 'quit' /path/to/file

Vim lets you set lots of printing-related options, so you might want to see the documentation if you want to tweak it. Of course, there are lots of syntax highlighting options as well.

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In Gedit, the standard editor for gnome, you can print to file, choose Postscript (default PDF) and mark on the third tab, to use highlightening, which is off as default, which produces a nice ps-file for me.

And Gedit has a lot of syntax files, to serve many programming languages, HTML, SQL, XML, rc-files, you name it.

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There are several programs that pretty-print various programming languages to Postscript, which don't require any third-party software to run:

If you are willing to go via LaTeX, you have more options. Going via LaTeX is mostly useful if you want to include code and something else in the same document; otherwise it's overkill.

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