instiki/app/controllers/wiki_controller.rb

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require 'application'
require 'fileutils'
require 'redcloth_for_tex'
class WikiController < ApplicationController
layout 'default', :except => [:rss_feed, :rss_with_headlines, :tex, :export_tex, :export_html]
def index
if @web_name
redirect_show 'HomePage'
elsif not @wiki.setup?
redirect_to :controller => 'admin', :action => 'create_system'
elsif @wiki.webs.length == 1
redirect_show 'HomePage', @wiki.webs.values.first.address
else
redirect_to :action => 'web_list'
end
end
# Outside a single web --------------------------------------------------------
def authenticate
if password_check(@params['password'])
redirect_show('HomePage')
else
redirect_to :action => 'login'
end
end
def login
# to template
end
def web_list
@webs = wiki.webs.values.sort_by { |web| web.name }
end
# Within a single web ---------------------------------------------------------
def authors
@authors = @web.select.authors
end
def export_html
export_pages_as_zip('html') do |page|
@page = page
@link_mode = :export
render_to_string 'wiki/print'
end
end
def export_markup
export_pages_as_zip(@web.markup) { |page| page.content }
end
def export_pdf
file_name = "#{@web.address}-tex-#{@web.revised_on.strftime('%Y-%m-%d-%H-%M-%S')}"
file_path = @wiki.storage_path + file_name
export_web_to_tex "#{file_path}.tex" unless FileTest.exists? "#{file_path}.tex"
convert_tex_to_pdf "#{file_path}.tex"
send_file "#{file_path}.pdf"
end
def export_tex
file_name = "#{@web.address}-tex-#{@web.revised_on.strftime('%Y-%m-%d-%H-%M-%S')}.tex"
file_path = @wiki.storage_path + file_name
export_web_to_tex(file_path) unless FileTest.exists?(file_path)
send_file file_path
end
def feeds
# to template
end
def list
parse_category
@pages_by_name = @pages_in_category.by_name
@page_names_that_are_wanted = @pages_in_category.wanted_pages
@pages_that_are_orphaned = @pages_in_category.orphaned_pages
end
def recently_revised
parse_category
@pages_by_revision = @pages_in_category.by_revision
end
def remove_orphaned_pages
if wiki.authenticate(@params['system_password_orphaned'])
wiki.remove_orphaned_pages(@web_name)
flash[:info] = 'Orphaned pages removed'
redirect_to :action => 'list'
else
flash[:error] = password_error(@params['system_password'])
return_to_last_remembered
end
end
def rss_with_content
render_rss
end
def rss_with_headlines
render_rss(hide_description = true)
end
def search
@query = @params['query']
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@title_results = @web.select { |page| page.name =~ /#{@query}/i }.sort
@results = @web.select { |page| page.content =~ /#{@query}/i }.sort
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all_pages_found = (@results + @title_results).uniq
if all_pages_found.size == 1
redirect_show(all_pages_found.first.name)
end
end
# Within a single page --------------------------------------------------------
def cancel_edit
@page.unlock
redirect_show
end
def edit
if @page.nil?
redirect_to :action => 'index'
elsif @page.locked?(Time.now) and not @params['break_lock']
redirect_to :web => @web_name, :action => 'locked', :id => @page_name
else
@page.lock(Time.now, @author)
end
end
def locked
# to template
end
def new
# to template
end
def pdf
page = wiki.read_page(@web_name, @page_name)
safe_page_name = @page.name.gsub(/\W/, '')
file_name = "#{safe_page_name}-#{@web.address}-#{@page.created_at.strftime('%Y-%m-%d-%H-%M-%S')}"
file_path = @wiki.storage_path + file_name
export_page_to_tex("#{file_path}.tex") unless FileTest.exists?("#{file_path}.tex")
# NB: this is _very_ slow
convert_tex_to_pdf("#{file_path}.tex")
send_file "#{file_path}.pdf"
end
def print
@link_mode ||= :show
# to template
end
def published
if @web.published
@page = wiki.read_page(@web_name, @page_name || 'HomePage')
else
redirect_show('HomePage')
end
end
def revision
get_page_and_revision
end
def rollback
get_page_and_revision
end
def save
redirect_to :action => 'index' if @page_name.nil?
cookies['author'] = @params['author']
begin
page = @web.pages[@page_name]
if @web.pages[@page_name]
wiki.revise_page(
@web_name, @page_name, @params['content'], Time.now,
Author.new(@params['author'], remote_ip)
)
page.unlock
else
wiki.write_page(
@web_name, @page_name, @params['content'], Time.now,
Author.new(@params['author'], remote_ip)
)
end
redirect_show(@page_name)
rescue Instiki::ValidationError => e
page.unlock if defined? page
flash[:error] = e
return_to_last_remembered
end
end
def show
if @page
begin
render_action 'page'
# TODO this rescue should differentiate between errors due to rendering and errors in
# the application itself (for application errors, it's better not to rescue the error at all)
rescue => e
logger.error e
if in_a_web?
redirect_to :web => @web_name, :action => 'edit',
:action_suffix => "#{CGI.escape(@page_name)}?msg=#{CGI.escape(e.message)}"
else
raise e
end
end
else
redirect_to :web => @web_name, :action => 'new', :id => CGI.escape(@page_name)
end
end
def tex
@tex_content = RedClothForTex.new(@page.content).to_tex
end
private
def convert_tex_to_pdf(tex_path)
# TODO remove earlier PDF files with the same prefix
# TODO handle gracefully situation where pdflatex is not available
begin
wd = Dir.getwd
Dir.chdir(File.dirname(tex_path))
logger.info `pdflatex --interaction=nonstopmode #{File.basename(tex_path)}`
ensure
Dir.chdir(wd)
end
end
def export_page_to_tex(file_path)
tex
File.open(file_path, 'w') { |f| f.write(render_to_string('wiki/tex')) }
end
def export_pages_as_zip(file_type, &block)
file_prefix = "#{@web.address}-#{file_type}-"
timestamp = @web.revised_on.strftime('%Y-%m-%d-%H-%M-%S')
file_path = @wiki.storage_path + file_prefix + timestamp + '.zip'
tmp_path = "#{file_path}.tmp"
Zip::ZipOutputStream.open(tmp_path) do |zip_out|
@web.select.by_name.each do |page|
zip_out.put_next_entry("#{page.name}.#{file_type}")
zip_out.puts(block.call(page))
end
# add an index file, if exporting to HTML
if file_type.to_s.downcase == 'html'
zip_out.put_next_entry 'index.html'
zip_out.puts <<-EOL
<html>
<head>
<META HTTP-EQUIV="Refresh" CONTENT="0;URL=HomePage.#{file_type}">
</head>
</html>
EOL
end
end
FileUtils.rm_rf(Dir[@wiki.storage_path + file_prefix + '*.zip'])
FileUtils.mv(tmp_path, file_path)
send_file file_path
end
def export_web_to_tex(file_path)
@tex_content = table_of_contents(@web.pages['HomePage'].content.dup, render_tex_web)
File.open(file_path, 'w') { |f| f.write(render_to_string('wiki/tex_web')) }
end
def get_page_and_revision
@revision = @page.revisions[@params['rev'].to_i]
end
def parse_category
@categories = @web.categories
@category = @params['category']
if @categories.include?(@category)
@pages_in_category = @web.select { |page| page.in_category?(@category) }
@set_name = "category '#{@category}'"
else
@pages_in_category = PageSet.new(@web).by_name
@set_name = 'the web'
end
@category_links = @categories.map { |c|
if @category == c
%{<span class="selected">#{c}</span>}
else
%{<a href="?category=#{c}">#{c}</a>}
end
}
end
def password_check(password)
if password == @web.password
cookies['web_address'] = password
true
else
false
end
end
def remote_ip
ip = @request.remote_ip
logger.info(ip)
ip
end
def render_rss(hide_description = false)
@pages_by_revision = @web.select.by_revision.first(15)
@hide_description = hide_description
@response.headers['Content-Type'] = 'text/xml'
render 'wiki/rss_feed'
end
def render_tex_web
@web.select.by_name.inject({}) do |tex_web, page|
tex_web[page.name] = RedClothForTex.new(page.content).to_tex
tex_web
end
end
def render_to_string(template_name)
add_variables_to_assigns
render template_name
@performed_render = false
@template.render_file(template_name)
end
def truncate(text, length = 30, truncate_string = '...')
if text.length > length then text[0..(length - 3)] + truncate_string else text end
end
end