require 'fileutils' require 'redcloth_for_tex' require 'parsedate' require 'zip/zip' class WikiController < ApplicationController # TODO implement cache sweeping caches_page :show layout 'default', :except => [:rss_feed, :rss_with_content, :rss_with_headlines, :tex, :export_tex, :export_html] def index if @web_name redirect_home elsif not @wiki.setup? redirect_to :controller => 'admin', :action => 'create_system' elsif @wiki.webs.length == 1 redirect_home @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_home else flash[:info] = password_error(@params['password']) redirect_to :action => 'login', :web => @web_name 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.sort end def export_html export_pages_as_zip('html') do |page| @page = page @renderer = PageRenderer.new(page.revisions.last) @link_mode = :export render_to_string('wiki/print', use_layout = (@params['layout'] != 'no')) 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_at.strftime('%Y-%m-%d-%H-%M-%S')}" file_path = File.join(@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_at.strftime('%Y-%m-%d-%H-%M-%S')}.tex" file_path = File.join(@wiki.storage_path, file_name) export_web_to_tex(file_path) unless FileTest.exists?(file_path) send_file file_path end def feeds @rss_with_content_allowed = rss_with_content_allowed? # show the 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 rss_with_content if rss_with_content_allowed? render_rss(hide_description = false, *parse_rss_params) else render_text 'RSS feed with content for this web is blocked for security reasons. ' + 'The web is password-protected and not published', '403 Forbidden' end end def rss_with_headlines render_rss(hide_description = true, *parse_rss_params) end def search @query = @params['query'] @title_results = @web.select { |page| page.name =~ /#{@query}/i }.sort @results = @web.select { |page| page.content =~ /#{@query}/i }.sort all_pages_found = (@results + @title_results).uniq if all_pages_found.size == 1 redirect_to_page(all_pages_found.first.name) end end # Within a single page -------------------------------------------------------- def cancel_edit @page.unlock redirect_to_page(@page_name) end def edit if @page.nil? redirect_home 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.revised_at.strftime('%Y-%m-%d-%H-%M-%S')}" file_path = File.join(@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 @renderer = PageRenderer.new(@page.revisions.last) # to template end def published if @web.published? page = wiki.read_page(@web_name, @page_name || 'HomePage') @renderer = PageRenderer.new(page.revisions.last) else redirect_home end end def revision get_page_and_revision @renderer = PageRenderer.new(@revision) end def rollback get_page_and_revision end def save redirect_home if @page_name.nil? cookies['author'] = @params['author'] begin if @page wiki.revise_page(@web_name, @page_name, @params['content'], Time.now, Author.new(@params['author'], remote_ip), PageRenderer.new) @page.unlock else wiki.write_page(@web_name, @page_name, @params['content'], Time.now, Author.new(@params['author'], remote_ip), PageRenderer.new) end redirect_to_page @page_name rescue => e flash[:error] = e flash[:content] = @params['content'] if @page @page.unlock redirect_to :action => 'edit', :web => @web_name, :id => @page_name else redirect_to :action => 'new', :web => @web_name, :id => @page_name end end end def show if @page begin @renderer = PageRenderer.new(@page.revisions.last) 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 flash[:error] = e.message if in_a_web? redirect_to :action => 'edit', :web => @web_name, :id => @page_name else raise e end end else if not @page_name.nil? and not @page_name.empty? redirect_to :web => @web_name, :action => 'new', :id => @page_name else render_text 'Page name is not specified', '404 Not Found' end 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_at.strftime('%Y-%m-%d-%H-%M-%S') file_path = File.join(@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("#{CGI.escape(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 "" + "" end end FileUtils.rm_rf(Dir[File.join(@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.page('HomePage').content, render_tex_web) File.open(file_path, 'w') { |f| f.write(render_to_string('wiki/tex_web')) } end def get_page_and_revision @revision_number = @params['rev'].to_i @revision = @page.revisions[@revision_number] end def parse_category @category = @params['category'] @categories = [] @pages_in_category = @web.select do |page| page_categories = PageRenderer.new(page.revisions.last).display_content.find_chunks(Category) page_categories = page_categories.map { |cat| cat.list }.flatten page_categories.each {|c| @categories << c unless @categories.include? c } page_categories.include?(@category) end @categories.sort! if (@pages_in_category.empty?) @pages_in_category = PageSet.new(@web).by_name @set_name = 'the web' else @set_name = "category '#{@category}'" end end def parse_rss_params if @params.include? 'limit' limit = @params['limit'].to_i rescue nil limit = nil if limit == 0 else limit = 15 end start_date = Time.local(*ParseDate::parsedate(@params['start'])) rescue nil end_date = Time.local(*ParseDate::parsedate(@params['end'])) rescue nil [ limit, start_date, end_date ] end def remote_ip ip = @request.remote_ip logger.info(ip) ip end def render_rss(hide_description = false, limit = 15, start_date = nil, end_date = nil) if limit && !start_date && !end_date @pages_by_revision = @web.select.by_revision.first(limit) else @pages_by_revision = @web.select.by_revision @pages_by_revision.reject! { |page| page.revised_at < start_date } if start_date @pages_by_revision.reject! { |page| page.revised_at > end_date } if end_date end @hide_description = hide_description @response.headers['Content-Type'] = 'text/xml' @link_action = @web.password ? 'published' : 'show' 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, with_layout = false) add_variables_to_assigns self.assigns['content_for_layout'] = @template.render_file(template_name) if with_layout @template.render_file('layouts/default') else self.assigns['content_for_layout'] end end def rss_with_content_allowed? @web.password.nil? or @web.published? end def truncate(text, length = 30, truncate_string = '...') if text.length > length then text[0..(length - 3)] + truncate_string else text end end end