Posted by Alpha Sun, 30 Dec 2007 23:38:00 GMT
anim = Magick::ImageList.new(*Dir["/some/path/*.jpg"]) anim.each {|img| img.resize!(200,200) } anim.delay = 10 anim.unshift Magick::Image.read("/some/image.jpg")[0].resize(200,200) anim << Magick::Image.read("/some/other/image.jpg")[0].resize(200,200) anim.write("animated.gif")
Example image:
Posted by Alpha Sun, 30 Dec 2007 21:05:58 GMT
It took me no small amount of time to figure out how to horizontally and vertically center image links, so here it is for posterity’s sake. Note that this doesn’t work in IE and is rather specific to my purposes in creating thumbnail links for a bunch of pictures.
HTML:<div class="thumbnail"> <a href=/some/link> <img src=/some/image> </a> </div>CSS:
.thumbnail { height:150px; width:150px; line-height:150px; text-align:center; } .thumbnail img { vertical-align:middle; }
Posted by Alpha Tue, 04 Dec 2007 06:55:00 GMT
After seeing Christian von Kleist’s solution, I couldn’t help but play with it a bit to come up with this:
#!/usr/bin/env ruby puts ARGV[0].split(/\s*/).inject([]) {|n,i| n << ((%w[+ - * /].include?(i)) ? (b,a=n.pop,n.pop; "(#{a} #{i} #{b})") : i) }[0]
Posted by Alpha Tue, 04 Dec 2007 00:49:00 GMT
My extremely lazy whack at the latest Ruby Quiz. Turns a postfix expression into an infix expression via regular expressions.
#!/usr/bin/env ruby str = ARGV[0].split(/\s+/).join('_') while str.include?('_') str.sub!(/([^_]+)_([^_]+)_([+\-*\/])/, '(\1 \3 \2)') end puts str
A few test cases I used in developing the solution before turning it into an actual script:
require 'test/unit' def postfix_to_infix(str) str = str.split(/[^.\d+\-*\/]/).join(' ') while str !~ /^\(.*\)$/ str.sub!(/([^ ]+) ([^ ]+) ([+\-*\/])/, '(\1\3\2)') end str.gsub(/([+\-*\/])/, ' \1 ').sub(/^\((.*)\)$/, '\1') end class PostfixToInfixTest < Test::Unit::TestCase def test_postfix_to_infix assert_equal '2 + 3', postfix_to_infix('2 3 +') assert_equal '12 + 34', postfix_to_infix('12 34 +') assert_equal '1.2 + 3.4', postfix_to_infix('1.2 3.4 +') assert_equal '(1 - 2) - (3 + 4)', postfix_to_infix('1 2 - 3 4 + -') assert_equal '(56 * (34 + 213.7)) - 678', postfix_to_infix('56 34 213.7 + * 678 -') end end
Posted by Alpha Mon, 03 Dec 2007 01:23:00 GMT
Throughout this post, I’ll use foobar as a fake domain. You should replace this with the appropriate domain(s) for your own use.
First, install AWStats.
$ sudo apt-get install awstats
/etc/lighttpd.conf will need to be modified; this will be slightly different if you want to use a directory instead of a subdomain to check your stats.
server.modules += ( "mod_cgi" ) $HTTP["host"] =~ "stats.foobar" { alias.url = ( "/icon/" => "/usr/share/awstats/icon/", "/css/" => "/usr/share/doc/awstats/examples/css/", "/cgi-bin/" => "/usr/lib/cgi-bin/" ) cgi.assign = ( ".pl" => "/usr/bin/perl", ".cgi" => "/usr/bin/perl" ) }
Make sure this works by visiting http://stats.foobar/cgi-bin/awstats.pl. You should get an error message from the AWStats CGI file.
In /etc/awstats, make a awstats.foobar.conf file, replacing foobar with whatever is appropriate for your purposes.
LogFile="/var/log/lighttpd/access.log" LogType=W LogFormat=1 SiteDomain="foobar" HostAliases="localhost 127.0.0.1 REGEX[foobar$]" DNSLookup=1 DirData="/var/lib/awstats" DirCgi="/cgi-bin" DirIcons="/icon" SkipHosts="127.0.0.1 localhost REGEX[^192\.168\.]"
Run awstats.pl to initialize the statistics database.
$ sudo -u www-data /usr/lib/cgi-bin/awstats.pl -config=foobar -update
Your stats should now be visible at http://stats.foobar/cgi-bin/awstats.pl?config=foobar.
Now all that’s left is editing the crontab and logrotate configuration files to automatically populate the stats.
0,10,20,30,40,50 * * * * www-data [ -x /usr/lib/cgi-bin/awstats.pl -a -f /etc/awstats/awstats.foobar.conf -a -r /var/log/lighttpd/access.log ] && /usr/lib/cgi-bin/awstats.pl -config=foobar -update >/dev/null
prerotate /usr/lib/cgi-bin/awstats.pl -config=foobar -update endscript
Posted by Alpha Sun, 02 Dec 2007 05:55:00 GMT
To start, we need to install Ultraviolet. Since the library uses Oniguruma, we’ll have to install that as well.
$ sudo apt-get install libonig-dev $ sudo gem install ultraviolet
Use irb to copy the CSS syntax files into Typo’s stylesheet directory. From the base directory of the Typo installation:
$ mkdir public/stylesheets/ultraviolet $ irb -ruv irb(main):001:0> Uv.copy_files 'xhtml', 'public/stylesheets/ultraviolet'
Copy one of the existing textfilters to use as a base.
$ cd vendor/plugins $ cp -r typo_textfilter_code typo_textfilter_ultraviolet $ cd typo_textfilter_ultraviolet $ mv lib/typo_textfilter_code.rb lib/typo_textfilter_ultraviolet.rb
Modify init.rb to require the Ultraviolet textfilter instead of the code textfilter.
# Include hook code here require 'typo_textfilter_ultraviolet'
And last, edit lib/typo_textfilter_ultraviolet.rb to use Ultraviolet instead of the Syntax library.
require 'uv' class Typo class Textfilter class Ultraviolet < TextFilterPlugin::MacroPre plugin_display_name "Ultraviolet" plugin_description "Apply syntax highlighting to a code block using Ultraviolet" def self.help_text syntaxes, themes = [Uv.syntaxes, Uv.themes].map do |ary| ary.sort.map {|i| "* #{i.gsub('_', '\_')}" }.join("\n") end %{ This uses the [Ultraviolet](http://ultraviolet.rubyforge.org/) syntax highlighting engine. Options: * **lang**. Sets the programming language. The default language is Ruby. * **linenumber**. Turns on line numbering. Use `linenumber="true"` to enable. * **theme**. Sets the theme. The default theme is Idle. ### Supported themes: #{themes} ### Supported languages: #{syntaxes} } end def self.macrofilter(blog,content,attrib,params,text="") lang = attrib['lang'] || 'ruby' theme = attrib['theme'] || 'idle' linenumber = attrib['linenumber'] text = text.to_s.gsub(/\r/,'').gsub(/\A\n/,'').chomp result = Uv.parse(text, 'xhtml', lang, linenumber, theme) set_whiteboard(blog, content, theme) "<notextile>#{result}</notextile>" end def self.set_whiteboard(blog, content, theme) content.whiteboard["page_header_ultraviolet_#{theme}"] = <<-HTML <link href="#{blog.base_url}/stylesheets/ultraviolet/#{theme}.css" media="all" rel="Stylesheet" type="text/css" /> HTML end end end end
Posted by Alpha Sun, 02 Dec 2007 01:53:00 GMT
Ruby:
class Foo def bar puts "hello world" end end
C with linenumbers using the blackboard theme:
1 void bar() { 2 printf("hello world\n"); 3 }
Objective-C with the twilight theme:
#import <Foundation/NSObject.h> @interface Fraction: NSObject { int numerator; int denominator; } -(void) print; -(void) setNumerator: (int) d; -(void) setDenominator: (int) d; -(int) numerator; -(int) denominator; @end
Python with linenumbers and using the pastels_on_dark theme:
1 class MyClass: 2 "A simple example class" 3 i = 12345 4 def f(self): 5 return 'hello world'
Done using Ultraviolet.