| class Page < ActiveRecord::Base |
| |
| belongs_to :site #, :dependent => :destroy |
| |
| before_create :extract_metadata_from_html |
| |
| validates_format_of :status, :with => /N.A|New|Updated|Undetermined|RemovedOrMoved|Harvested/ |
| validates_format_of :tool, :with => /EPFC|Wiki/ |
| |
| validates_presence_of :rel_path, :site#, :presentation_name#, :uma_type, :filename |
| #validates_length_of :filename, :maximum => 250 |
| #validates_length_of :uma_type, :maximum => 100 |
| #validates_length_of :presentation_name, :maximum => 500 |
| validates_length_of :rel_path, :maximum => 250 |
| |
| validate :validate_rel_path_used, :on => :create |
| |
| # For creating a new page, use to specify the source version of the template or page |
| # NOTE: depending where it is used (view or model) this stores an Id or and object. |
| attr_accessor :source_version |
| |
| # For creating a new page, use to specify the user |
| attr_accessor :user |
| |
| # When creating a new page, use to supply a note for creating the version |
| attr_accessor :note |
| |
| # Used to remove HTML fragment that wikifies the HTML file so it can be edited. |
| PAGE_HEAD_SNIPPET_PATTERN = /<!-- epfwiki head.*head end -->/m |
| # Used to replace treebrowser.js from HTML files because it chrashes the HTML editor |
| TREEBROWSER_PATTERN = /<script.*?scripts\/treebrowser\.js.*?<\/script>/i |
| # Placeholder for TREEBROWSER_PATTERN , so we can easily place it back in the file |
| TREEBROWSER_PLACEHOLDER = "<div id=\"treebrowser_tag_placeholder\"></div>" |
| # Used to remove onload event from HTML files because it crashed the HTML Editor |
| BODY_TAG_PATTERN = /<body.*>/i |
| # Used to add the page_script |
| BODY_CLOSING_TAG_PATTERN = /<\/body>/i |
| # Used to fix some layout problems with the 'horizontal rule' |
| SHIM_TAG_PATTERN = /images\/shim.gif(")?( )*\/?>.?( )*?.?( )*?<\/td>/im |
| # Used to fix some layout problems with the 'horizontal rule' |
| SHIM_TAG = "images/shim.gif\" /></td>" |
| # Used to replace copyright notice from the file so it can be edited. |
| COPYRIGHT_PATTERN = /<p>( )*?(.)?( )*?copyright(.)*?<\/p>/im |
| # Placeholder for copyright notice we find with COPYRIGHT_PATTERN |
| COPYRIGHT_PLACEHOLDER = "<!-- copyright statement -->" |
| TITLE_PATTERN = /<title>(.)*<\/title>/i |
| HEAD_PATTERN = /<head>(.)*<\/head>/im |
| TITLE2_PATTERN = /class="pageTitle">(.)*<\/td>/ # TODO use regular expressions the right way |
| TITLE2_START = /class="pageTitle">/i |
| TITLE2_END = /<\/td>/ |
| ELEMENT_TYPE_PATTERN = /<meta(.)*element_type(.)*>/i |
| |
| def self.get_snippets |
| ["<!-- epfwiki head start --> |
| <script src=\"#{ENV['EPFWIKI_BASE_URL']}/javascripts/jquery.js\" type=\"text/javascript\"></script> |
| <script src=\"#{ENV['EPFWIKI_BASE_URL']}/javascripts/jquery_ujs.js\" type=\"text/javascript\"></script> |
| <link href=\"#{ENV['EPFWIKI_BASE_URL']}/stylesheets/wiki.css\" media=\"screen\" rel=\"Stylesheet\" type=\"text/css\" /> |
| <script src=\"#{ENV['EPFWIKI_BASE_URL']}/javascripts/wiki.js\" type=\"text/javascript\" language=\"JavaScript\"></script> |
| <!-- epfwiki head end -->"] |
| end |
| |
| # Method #enhance_file enhances a file if it hasn't been enhanced yet |
| # with e.g. Javascript libs, CSS, (script) elements |
| def self.enhance_file(path, snippets = Page.get_snippets) |
| h = IO.readlines(path).join |
| if h.index('epfwiki head start') |
| logger.info("File skipped (already enhanced): #{path}") |
| else |
| new_html = h.gsub(/<\/head>/i, snippets[0] + "\n</head>") |
| new_html = new_html.gsub("width=\"100%\"", "width=\"99%\"") # workaround to prevent scrollbar from being displayed |
| file = File.new(path, "w") |
| file.puts(new_html) |
| file.close |
| end |
| end |
| |
| def path |
| return self.site.path + '/' + self.rel_path |
| end |
| |
| def html |
| IO.readlines(self.path).join |
| end |
| |
| def url |
| self.site.url.gsub('/index.htm','/') + self.rel_path |
| end |
| |
| # extracts and returns the UMA Presentation Name from HTML |
| def self.uma_presentation_name_from_html(html) |
| return uma_value_from_html(html, /<meta.*? name="uma\.presentationName".*?>/) |
| end |
| |
| # UMA Name from HTML |
| def self.uma_name_from_html(html) |
| return uma_value_from_html(html, /<meta.*? name="uma\.name".*?>/) |
| end |
| |
| # UMA Type from HTML |
| def self.uma_type_from_html(html) |
| return uma_value_from_html(html, /<meta.*? name="uma\.type".*?>/) |
| end |
| |
| # Order of content and name does not seem to be always the same? |
| # So this method is independent of order |
| def self.uma_value_from_html(html, pattern) |
| match = pattern.match(html) |
| result = '' |
| if match |
| match2 = /content="(.*?)"/.match(match[0]) |
| result = match2[1] if match2 |
| end |
| return result |
| end |
| |
| def overview_table |
| match = /class="overviewTable".*?>(.*?)<\/table>/m.match(self.html) |
| if match # some pages may not have overviewTable section |
| match1 = /td.*?>(.*?)<\/td>/m.match(match[1]) # returns only the text from the overviewTable section |
| if match1 |
| result = match1[1] |
| end |
| else |
| result = "" |
| end |
| |
| return result |
| end |
| |
| def validate_rel_path_used |
| if self.tool == 'Wiki' |
| errors.add(:rel_path, "already used; can\'t create another page with relative path #{self.rel_path}") if Page.exists?(['rel_path = ? and site_id = ?',self.rel_path, self.site.id]) |
| end |
| end |
| |
| def extract_metadata_from_html |
| h = self.html |
| self.uma_type = Page.uma_type_from_html(h) |
| self.uma_name = Page.uma_name_from_html(h) |
| logger.debug("...#{Page.uma_presentation_name_from_html(h)}") |
| self.presentation_name = Page.uma_presentation_name_from_html(h) |
| self.filename = File.basename(self.path) |
| self.body_tag = BODY_TAG_PATTERN.match(h).to_s |
| self.treebrowser_tag = TREEBROWSER_PATTERN.match(h).to_s |
| self.copyright_tag = COPYRIGHT_PATTERN.match(h).to_s |
| self.head_tag = Page::HEAD_PATTERN.match(h).to_s |
| end |
| |
| end |
