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#!/usr/bin/perl -w use strict; our($text, %config, %complements); $config{colors}={ #sigils=red '$' => '993333', '@' => 'CC6633', '%' => '660000', '&' => '990033', '*' => '990000', #quotes=blue "'" => '6699FF', '"' => '3366CC', '`' => '333399', 'qw' => '0000FF', #regexes 'm' => '000088', 's' => '0000CC', 'y' => '0000FF', 'tr' => '0000FF', #various '()' => '880000', '[]' => 'CC0000', '{}' => 'FF0000', '<<' => '00CC00', '#' => '339999', }; %complements=( '{' => '}', '(' => ')', '[' => ']', '<' => '>' ); for(32..127) { $complements{chr($_)}=chr($_) unless exists $complements{chr($_)}; } $/=undef; $text=<>; $text=highlight_quotes($text); $text=highlight_regexes($text); $text=highlight_various($text); $text=highlight_sigils($text); $text=fix_it_up($text); print <<"END"; <HTML><font face="Courier New"> $text </font></HTML> END sub fixit($) { local $_=shift; if(/qq/) { '"' } elsif(/qx/) { '`' } elsif(/qw/) { 'qw'} elsif(/q/) { "'" } else { die "$0: $_ is not a valid quoter\n" } } sub fix_it_up($) { local $_=shift; s/\n/\0<BR\0>\n/g; s/(?<!\0)</&lt;/g; s/(?<!\0)>/&gt;/g; s/ /&nbsp; /g; #since I'm using null as an escape character, I have to get rid of + the ones that are left s/\0//g; return $_; } sub highlight_quotes($) { local $_=shift; #heredocs: MUST BE DONE before '' and "" highlighting s|<<(['"]?)(.*)\1([^\n]*?)\n(.*?)\n\2\n|<<$1$2$1$3\n\0<font color= +\0"\0#$config{colors}{'<<'}\0"\0>$4\0</font\0>\n$2\n|gs; #normal quoted strings s|(?<!\0)(['"`])(.*?)(?<!\\)\1|$1\0<font color=\0"\0#$config{color +s}{$1}\0"\0>$2\0</font\0>$1|gs; # qX s|(q[qxwr]?)([^\w\s\[\{\(\<])(.*?)(?<!\\)(??{quotemeta($complement +s{$2})})|qq($1$2\0<font color=\0"\0#).$config{colors}{fixit($1)}.qq(\ +0"\0>$3\0</font\0>$complements{$2})|ges; return $_; } sub highlight_various($) { local $_=shift; #highlight subscripting and function args s|(?<=\w)([\{\[\(])(.*?)(??{quotemeta($complements{$1})})|\0$1\0<f +ont color=\0"\0#$config{colors}{$1.$complements{$1}}\0"\0>$2\0</font\ +0>\0$complements{$1}|sg; #highlight comments--unless the sharp appears to be the delimiter +of a q, qq, qw, qx, tr, y, m, or s s|^([^#]+)(?<![qwxmsry\0])#(.*)$|$1\0<font color=\0"\0#$config{col +ors}{'#'}\0"\0>\0#$2\0</font\0>|gm; s|^#(.*)$|\0<font color=\0"\0#$config{colors}{'#'}\0"\0>\0#$1\0</f +ont\0>|gm; return $_; } sub highlight_sigils($) { local $_=shift; #wrapped in {} 1 while s|(?<!\0)([\$\@\%\&\*])(?<!\0)\{(.*?)(?<!\0)\}|\0<font col +or=\0"\0#$config{colors}{$1}\0"\0>\0$1\0{$2\0}\0</font\0>|sg; #unwrapped s[(?<!\0)([\$\@\%\&\*])((?:[\w:]|\0(?:\{|\}|\[|\]))*)][\0<font col +or=\0"\0#$config{colors}{$1}\0"\0>\0$1$2\0</font\0>]sg; return $_; } sub highlight_regexes($) { local $_=shift; #m//, m{} s{m([^\w\s\0])(.*?)(?<![\\\0])(??{quotemeta($complements{$1})})} {m$1\0<font color=\0"\0#$config{colors}{m}\0"\0>$2\0</font\0>$com +plements{$1}}gs; #s///, tr/// s{(s|tr|y)([^\w\s\0])(.*?)(?![\\\0])\2(.*?)(?![\\\0])\2} {$1$2\0<font color=\0"\0#$config{colors}{$1}\0"\0>$3\0</font\0>$2 +\0<font color=\0"\0#$config{colors}{'"'}\0"\0>$4\0</font\0>$2}gs; #s{}{}, tr{}{} s{(s|tr|y)([\{\[\(\<])(.*?)(?<![\\\0])(??{quotemeta($complemen +ts{$2})})(\s*)([\{\[\(\<])(.*?)(?<![\\\0])(??{quotemeta($complements{ +$5})})}{$1$2\0<font color=\0"\0#$config{colors}{$1}\0"\0>$3\0</font\0 +>$complements{$2}$4$5\0<font color=\0"\0#$config{colors}{'"'}\0"\0>$6 +\0</font\0>$complements{$5}}gs; return $_; }

In reply to Perl Code Colorizer by BrentDax

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
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  • Want more info? How to link or or How to display code and escape characters are good places to start.
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