From 7e27259d5db7349e0e29762244298c986146ca37 Mon Sep 17 00:00:00 2001
From: mguetlein <martin.guetlein@gmail.com>
Date: Fri, 7 Dec 2012 16:59:56 +0100
Subject: extend html support

get request in service root now returns uri-list
accept header for html requests is fixed in before-method
fix link parsing in to_html method
add png image to to_html method
---
 lib/4store.rb              | 9 ++++-----
 lib/utils/html.rb          | 9 ++++++---
 lib/utils/shims/feature.rb | 2 +-
 3 files changed, 11 insertions(+), 9 deletions(-)

(limited to 'lib')

diff --git a/lib/4store.rb b/lib/4store.rb
index 3ed081d..5a2714b 100644
--- a/lib/4store.rb
+++ b/lib/4store.rb
@@ -6,9 +6,8 @@ module OpenTox
       @@content_type_formats = [ "application/rdf+xml", "text/turtle", "text/plain" ]
 
       def self.list mime_type
-        mime_type = "text/html" if mime_type.match(%r{\*/\*})
         bad_request_error "'#{mime_type}' is not a supported mime type. Please specify one of #{@@accept_formats.join(", ")} in the Accept Header." unless @@accept_formats.include? mime_type
-        if mime_type =~ /uri-list/
+        if mime_type =~ /(uri-list|html)/ 
           sparql = "SELECT DISTINCT ?g WHERE {GRAPH ?g {?s <#{RDF.type}> <#{klass}>; ?p ?o. } }"
         else 
           sparql = "CONSTRUCT {?s ?p ?o.} WHERE {?s <#{RDF.type}> <#{klass}>; ?p ?o. }"
@@ -17,7 +16,6 @@ module OpenTox
       end
 
       def self.get uri, mime_type
-        mime_type = "text/html" if mime_type.match(%r{\*/\*})
         bad_request_error "'#{mime_type}' is not a supported mime type. Please specify one of #{@@accept_formats.join(", ")} in the Accept Header." unless @@accept_formats.include? mime_type
         sparql = "CONSTRUCT {?s ?p ?o.} FROM <#{uri}> WHERE { ?s ?p ?o. }"
         rdf = query sparql, mime_type
@@ -61,8 +59,9 @@ module OpenTox
           case mime_type
           when 'application/sparql-results+xml' 
             RestClient.get(sparql_uri, :params => { :query => sparql }, :accept => mime_type).body
-          when "text/uri-list"
-            RestClient.get(sparql_uri, :params => { :query => sparql }, :accept => "text/plain").body.gsub(/"|<|>/,'').split("\n").drop(1).join("\n")
+          when /(uri-list|html)/
+            uri_list = RestClient.get(sparql_uri, :params => { :query => sparql }, :accept => "text/plain").body.gsub(/"|<|>/,'').split("\n").drop(1).join("\n")
+            uri_list = OpenTox.text_to_html(uri_list) if mime_type=~/html/
           else
             bad_request_error "#{mime_type} is not a supported mime type for SELECT statements."
           end
diff --git a/lib/utils/html.rb b/lib/utils/html.rb
index 91dfc64..d74f357 100644
--- a/lib/utils/html.rb
+++ b/lib/utils/html.rb
@@ -7,15 +7,17 @@
 * Date: 10/2012
 =end
 
+require "base64"
+
 # AM: needed since this gem has a nested directory structure
 
 class String
   # encloses URI in text with with link tag
   # @return [String] new text with marked links
   def link_urls
-    regex = Regexp.new '(https?:\/\/[\S]+)([>"])'
-    self.gsub( regex, '<a href="\1">\1</a>\2' )
+    self.gsub(/(?i)http(s?):\/\/[^\r\n\s']*/, '<a href="\0">\0</a>')
   end
+  
 end
 
 module OpenTox
@@ -29,7 +31,7 @@ module OpenTox
   # @param [optional,String] description general info
   # @param [optional,Array] post_command, infos for the post operation, object defined below
   # @return [String] html page
-  def self.text_to_html( text, subjectid=nil, related_links=nil, description=nil, post_command=nil  )
+  def self.text_to_html( text, subjectid=nil, related_links=nil, description=nil, post_command=nil, png_image=nil  )
     
     # TODO add title as parameter
     title = nil #$sinatra.url_for($sinatra.request.env['PATH_INFO'], :full) if $sinatra
@@ -41,6 +43,7 @@ module OpenTox
     html += "<h3>Related links</h3><pre><p>"+related_links.link_urls+"</p></pre>" if related_links
     html += "<h3>Content</h3>" if description || related_links
     html += "<pre><p style=\"padding:15px; border:10px solid \#5D308A\">"
+    html += "<img src=\"data:image/png;base64,#{Base64.encode64(png_image)}\">\n" if png_image
     html += text.link_urls
     html += "</p></pre></body></html>"
     html
diff --git a/lib/utils/shims/feature.rb b/lib/utils/shims/feature.rb
index 297748b..f49bb39 100644
--- a/lib/utils/shims/feature.rb
+++ b/lib/utils/shims/feature.rb
@@ -30,7 +30,7 @@ module OpenTox
       metadata[RDF.type] = [] unless metadata[RDF.type]
       metadata[RDF.type] << RDF::OT.Feature unless metadata[RDF.type].include?(RDF::OT.Feature)
       metadata[RDF::DC.title] = title unless (metadata[RDF::DC.title])
-      feature = feature_new = OpenTox::Feature.new File.join($feature[:uri], SecureRandom.uuid), @subjectid
+      feature = feature_new = OpenTox::Feature.new(File.join($feature[:uri], SecureRandom.uuid), @subjectid)
       feature_new.metadata = metadata
       sparql = "SELECT DISTINCT ?feature WHERE { ?feature <#{RDF.type}> <#{RDF::OT['feature'.capitalize]}>. ?feature <#{RDF::DC.title}> '#{title.to_s}' }"
       feature_uris = OpenTox::Backend::FourStore.query(sparql,"text/uri-list").split("\n")
-- 
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