merged reports into this rep

1 files changed, 102 insertions, 0 deletions

diff --git a/report/util.rb b/report/util.rb
new file mode 100644
index 0000000..b460d48
--- /dev/null
+++ b/report/util.rb
@@ -0,0 +1,102 @@
+
+# graph-files are generated in the tmp-dir before they are stored
+ENV['TMP_DIR'] = File.join(FileUtils.pwd,"reports","tmp") unless ENV['TMP_DIR']
+
+class Object
+  
+  # checks weather two objects have the same values for __equal_attributes__
+  #
+  def has_equal_attributes?(equal_attributes, object)
+    equal_attributes.each{ |a| return false if send(a) != object.send(a) }
+    return true
+  end
+  
+end
+
+# = Reports::Util
+#
+# utilities
+#
+module Reports::Util
+  
+  # groups attributes the into groups with equal values for __equal_attributes__, returns an array with sub-arrays for each group  
+  # * see Reports::UtilTest for an example
+  #
+  # call-seq:
+  #   self.group( objects, equal_attributes ) => array
+  #
+  def self.group( objects, equal_attributes )
+    
+    result = Array.new
+    
+    objects.each do |o|
+      
+      match = false
+      result.each do |r|
+        if o.has_equal_attributes?(equal_attributes, r[0])
+          match = true
+          r.push(o)
+          break
+        end
+      end
+      
+      if !match
+        result.push(Array.new)
+        result[-1].push(o)
+      end
+    end
+    
+    return result    
+  end
+  
+  # checks weather all groups in a grouping (generated by self.group) have have corresponding objects
+  # * i.e. for each object in a group, there must be a object in each other group that has equal values for __match_attributes__
+  # * see Reports::UtilTest for an example
+  # * raises exception if no matching
+  #
+  # call-seq:
+  #   self.check_group_matching( grouped_objects, match_attributes )
+  #
+  def self.check_group_matching( grouped_objects, match_attributes )
+    
+    raise Reports::BadRequest.new("less then 2 groups, no matching possible") if grouped_objects.size<2
+    first_group = grouped_objects[0]
+    other_groups = grouped_objects[1..-1].collect{ |g| g.collect{|o| o }} 
+    other_groups.each{ |g| raise Reports::BadRequest.new("groups are not equally sized, matching impossible") if g.size != first_group.size } 
+    
+    first_group.each do |o|
+      
+      #puts "match "+o.to_s
+      other_groups.each do |group|
+        
+        match = false  
+        group.each do |o2|
+          #puts "try "+o2.to_s
+          if o.has_equal_attributes?(match_attributes, o2)
+            match = true
+            group.delete(o2)
+            break
+          end
+        end
+        raise Reports::BadRequest.new("no match found for "+o.to_s) unless match
+      end
+    end
+  end
+  
+  # returns the path of a file in directory ENV['TMP_DIR'], beginning with __tmp_file_name__, that does not exist yet 
+  #
+  # call-seq:
+  #   self.create_tmp_file(tmp_file_name) => string
+  #
+  def self.create_tmp_file(tmp_file_name)
+
+    tmp_file_path = nil
+    FileUtils.mkdir ENV['TMP_DIR'] unless File.directory?(ENV['TMP_DIR'])
+    raise "TMP_DIR does not exist and cannot be created" unless File.directory?(ENV['TMP_DIR'])
+    while (!tmp_file_path || File.exist?(tmp_file_path) )
+      tmp_file_path = ENV['TMP_DIR']+"/#{tmp_file_name}.#{Time.now.strftime("%Y-%-m-%d_%H-%M-%S")}.#{rand(11111).to_s}"
+    end
+    return tmp_file_path
+  end
+
+end
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