Beefy Boxes and Bandwidth Generously Provided by pair Networks
Clear questions and runnable code
get the best and fastest answer

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

So, an XML file or web post lists a bunch of colour specs like; 0x1e93c6, 0xf2b827, 0xd6563c, 0x6a5c9e, 0x31a35f; and you want to see what they look like.

You could paste each one into a colour viewer, but I couldn't find any tool to take them all at once. The following code takes random text containing hex colour strings, and creates an HTML file of square colour swatches.

#!/usr/bin/perl -w # # - Extract colour strings from random code or HTML. # Currently only looks for 0xRRGGBB and #RRGGBB. # # perl < source.txt > swatch.html # # and then open swatch.html in a browser! # # Chars that make up a colour string: # my $hexRegex = '0-9a-zA-Z'; my $colRegex = "#x$hexRegex"; my @hexSs = (); while ( <STDIN> ) { chomp; my @words = split /[^$colRegex]/; push @hexSs, (grep /^(0x|#)[$hexRegex]{6}$/, @words); } map { s/^(0x|#)(......)/$2/ } @hexSs; #print "Content-type: text/html\n\n"; print "<HTML>\n\n"; print "<HEAD>\n"; print "<TITLE>Colour swatches from random text</TITLE>\n"; print "</HEAD>\n\n"; print "<BODY><TABLE BORDER=1>\n"; print "<TR>"; my $cell = 0; foreach my $hex ( @hexSs ) { print "<TD BGCOLOR='#$hex'>", "<FONT COLOR='white'>$hex</FONT><BR><BR>", "<FONT COLOR='black'>$hex</FONT></TD>"; if ( $cell++ gt 4 ) { $cell=0; print "</TR>\n</TR>" } } print "</TR></TABLE></BODY></HTML>\n";

In reply to Colour/color sampler by Nige

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

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    and all is quiet...

    How do I use this? | Other CB clients
    Other Users?
    Others imbibing at the Monastery: (6)
    As of 2018-06-24 12:10 GMT
    Find Nodes?
      Voting Booth?
      Should cpanminus be part of the standard Perl release?

      Results (126 votes). Check out past polls.