I’ve installed the WP-Syntax plugin to add syntax highlighting and line numbers to code snippets I post, and this post is a test.

Here’s some C code without line numbers:

for (i = 0; i < 20; ++i)
{
    printf("i is %d\n", i);  /* print i */
}

Scheme code with line numbers:

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(define (tagged? expr tag)
  (if (pair? expr)
    (eq? (car expr) tag)
    #f))

Python code:

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def fib( ):
    """Unbounded generator for Fibonacci numbers"""
    x, y = 0, 1
    while True:
        yield x
        x, y = y, x + y
 
import itertools
print(list(itertools.islice(fib( ), 20)))

Perl code:

my %dict = (
  SENTENCE => ["NP VP"],
  NP       => ["ART NOUN"],
  VP       => ["VERB NP"],
  ART      => [qw/ the a /],
  NOUN     => [qw/ man ball woman table /],
  VERB     => [qw/ hit took saw liked /]
);
 
sub rand_production {
    my $items = $dict{+shift};
    return $items->[rand @$items];
}

Vanilla ‘pre’ tags, without WP-Syntax:

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

D:\Documents and Settings\User>

The same, but with ‘lang=text’ using WP-Syntax:

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
 
D:\\Documents and Settings\\User>

I wasn’t very happy with the default styles and colors used by the plugin, so I modified them to my taste, following the directions form GeSHi’s documentation (GeSHi is the syntax-highlighting package used by WP-Syntax).

The customization done by inserting the following code after the creation of the $geshi object in function wp_syntax_highlight of wp-syntax.php:

$geshi->set_keyword_group_style(1, 'color: blue; font-weight: bold;', false);
$geshi->set_keyword_group_style(2, 'color: blue;', false);
$geshi->set_keyword_group_style(3, 'color: black;', false);
$geshi->set_keyword_group_style(4, 'color: black;', false);
$geshi->set_strings_style('color: maroon;', false);
$geshi->set_escape_characters_style('color: maroon;', false);
$geshi->set_symbols_style('color: black;', false);
$geshi->set_numbers_style('color: black;', false);
$geshi->set_methods_style('color: black;', false);
$geshi->set_regexps_style('color: maroon;', false);
$geshi->set_comments_style(1, 'color: darkgreen;');
$geshi->set_comments_style('MULTI', 'color: darkgreen;');

I have also followed the WP-Syntax instructions to place wp-syntax.css in my theme directory to override my default styles for the ‘pre’ tag.

This entry was posted on Saturday, May 17th, 2008 at 8:50 am and is filed under Blogging. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.