#!/usr/local/ruby-1.8.0/bin/ruby -w
require 'cgi'
require "amrita/template"
include Amrita
raise unless RUBY_VERSION >= '1.8.0'
TITLE = 'Ruby - An Object Oriented Scripting Language : '
SLIDE_DIR = './slides/'
LEFT_ARROW = 171.chr
RIGHT_ARROW = 187.chr
def stacktrace; %Q(#{$!}\n#{$!.backtrace.join("\n")}); end
begin
cgi = CGI.new
action = cgi['action']
this = File.basename($0)
content = nil
action = 'show' if not action or action.empty?
case action
when /show/
n = cgi['n'].to_i
slides = Dir['slides/*'].sort_by{|path| File.basename(path).to_i}
n_slides = slides.size
last = n_slides - 1
np = n > 0 ? n - 1 : 0
nn = n < last ? n + 1 : last
index = Array.new(10,'.')
index[(n * 10.0) / last] = n
lines = IO.readlines "./slides/#{n}"
lines.map!{|line| Amrita::SanitizedString[line]}
heading = lines.shift
data = {
:title => "#{TITLE}:#{n} - #{heading}",
:prev =>
a(:href => this + "?n=#{np}"){(LEFT_ARROW * 2) + ' prev'},
:next =>
a(:href => this + "?n=#{nn}"){'next ' + (RIGHT_ARROW * 2)},
:start => a(:href => this + "?n=0") {LEFT_ARROW},
:end => a(:href => this + "?n=#{last}") {RIGHT_ARROW},
:heading => heading,
:list => lines,
:index => e(:a, :href => this + "?action=list"){index.join},
:left_arrow => a(:href => this + "?n=0") {LEFT_ARROW},
}
content = SHOW_TEMPLATE.expand '', data
when /list/
slides = Dir['slides/*'].sort_by{|path| File.basename(path).to_i}
list = []
slides.each do |slide|
n = File.basename(slide)
lines = IO.readlines "./slides/#{n}"
lines.map!{|line| Amrita::SanitizedString[line]}
heading = lines.shift
n, heading = [n, heading].map{|s| e(:a, :href => this + "?n=#{n}"){s}}
list << {:n => n, :heading => heading}
end
data = {
:title => "#{TITLE}:#{action}",
:list => list,
}
content = LIST_TEMPLATE.expand '', data
else
raise "INVALID ACTION #{action}"
end
puts "Content-type: text/html\r\n\r\n", content
rescue Exception
puts "Content-type: text/plain\r\n\r\n", stacktrace
end
BEGIN{
require 'amrita/template'
SHOW_TEMPLATE = Amrita::TemplateText.new <<-txt
txt
LIST_TEMPLATE = Amrita::TemplateText.new <<-txt
txt
}