class Trace < ActiveRecord::Base
set_table_name 'gpx_files'
- has_many :trace_points, :foreign_key => 'gpx_id'
+
+ belongs_to :user
+ has_many :tags, :class_name => 'Tracetag', :foreign_key => 'gpx_id', :dependent => :delete_all
+ has_many :points, :class_name => 'Tracepoint', :foreign_key => 'gpx_id', :dependent => :delete_all
+
+ scope :visible, where(:visible => true)
+ scope :visible_to, lambda { |u| visible.where("visibility IN ('public', 'identifiable') OR user_id = ?", u) }
+ scope :public, where(:visibility => ["public", "identifiable"])
+
+ validates_presence_of :user_id, :name, :timestamp
+ validates_presence_of :description, :on => :create
+ validates_length_of :name, :maximum => 255
+ validates_length_of :description, :maximum => 255
+# validates_numericality_of :latitude, :longitude
+ validates_inclusion_of :inserted, :in => [ true, false ]
+ validates_inclusion_of :visibility, :in => ["private", "public", "trackable", "identifiable"]
+
+ def destroy
+ super
+ FileUtils.rm_f(trace_name)
+ FileUtils.rm_f(icon_picture_name)
+ FileUtils.rm_f(large_picture_name)
+ end
+
+ def tagstring
+ return tags.collect {|tt| tt.tag}.join(", ")
+ end
+
+ def tagstring=(s)
+ if s.include? ','
+ self.tags = s.split(/\s*,\s*/).select {|tag| tag !~ /^\s*$/}.collect {|tag|
+ tt = Tracetag.new
+ tt.tag = tag
+ tt
+ }
+ else
+ #do as before for backwards compatibility:
+ self.tags = s.split().collect {|tag|
+ tt = Tracetag.new
+ tt.tag = tag
+ tt
+ }
+ end
+ end
+
+ def public?
+ visibility == "public" || visibility == "identifiable"
+ end
+
+ def trackable?
+ visibility == "trackable" || visibility == "identifiable"
+ end
+
+ def identifiable?
+ visibility == "identifiable"
+ end
+
+ def large_picture= (data)
+ f = File.new(large_picture_name, "wb")
+ f.syswrite(data)
+ f.close
+ end
+
+ def icon_picture= (data)
+ f = File.new(icon_picture_name, "wb")
+ f.syswrite(data)
+ f.close
+ end
+
+ def large_picture
+ f = File.new(large_picture_name, "rb")
+ logger.info "large picture file: '#{f.path}', bytes: #{File.size(f.path)}"
+ data = f.sysread(File.size(f.path))
+ logger.info "have read data, bytes: '#{data.length}'"
+ f.close
+ data
+ end
+
+ def icon_picture
+ f = File.new(icon_picture_name, "rb")
+ logger.info "icon picture file: '#{f.path}'"
+ data = f.sysread(File.size(f.path))
+ f.close
+ data
+ end
+
+ def large_picture_name
+ "#{GPX_IMAGE_DIR}/#{id}.gif"
+ end
+
+ def icon_picture_name
+ "#{GPX_IMAGE_DIR}/#{id}_icon.gif"
+ end
+
+ def trace_name
+ "#{GPX_TRACE_DIR}/#{id}.gpx"
+ end
+
+ def mime_type
+ filetype = `/usr/bin/file -bz #{trace_name}`.chomp
+ gzipped = filetype =~ /gzip compressed/
+ bzipped = filetype =~ /bzip2 compressed/
+ zipped = filetype =~ /Zip archive/
+
+ if gzipped then
+ mimetype = "application/x-gzip"
+ elsif bzipped then
+ mimetype = "application/x-bzip2"
+ elsif zipped
+ mimetype = "application/x-zip"
+ else
+ mimetype = "text/xml"
+ end
+
+ return mimetype
+ end
+
+ def extension_name
+ filetype = `/usr/bin/file -bz #{trace_name}`.chomp
+ gzipped = filetype =~ /gzip compressed/
+ bzipped = filetype =~ /bzip2 compressed/
+ zipped = filetype =~ /Zip archive/
+ tarred = filetype =~ /tar archive/
+
+ if tarred and gzipped then
+ extension = ".tar.gz"
+ elsif tarred and bzipped then
+ extension = ".tar.bz2"
+ elsif tarred
+ extension = ".tar"
+ elsif gzipped
+ extension = ".gpx.gz"
+ elsif bzipped
+ extension = ".gpx.bz2"
+ elsif zipped
+ extension = ".zip"
+ else
+ extension = ".gpx"
+ end
+
+ return extension
+ end
+
+ def to_xml
+ doc = OSM::API.new.get_xml_doc
+ doc.root << to_xml_node()
+ return doc
+ end
+
+ def to_xml_node
+ el1 = XML::Node.new 'gpx_file'
+ el1['id'] = self.id.to_s
+ el1['name'] = self.name.to_s
+ el1['lat'] = self.latitude.to_s if self.inserted
+ el1['lon'] = self.longitude.to_s if self.inserted
+ el1['user'] = self.user.display_name
+ el1['visibility'] = self.visibility
+ el1['pending'] = (!self.inserted).to_s
+ el1['timestamp'] = self.timestamp.xmlschema
+
+ el2 = XML::Node.new 'description'
+ el2 << self.description
+ el1 << el2
+
+ self.tags.each do |tag|
+ el2 = XML::Node.new('tag')
+ el2 << tag.tag
+ el1 << el2
+ end
+
+ return el1
+ end
+
+ # Read in xml as text and return it's Node object representation
+ def self.from_xml(xml, create=false)
+ begin
+ p = XML::Parser.string(xml)
+ doc = p.parse
+
+ doc.find('//osm/gpx_file').each do |pt|
+ return Trace.from_xml_node(pt, create)
+ end
+
+ raise OSM::APIBadXMLError.new("trace", xml, "XML doesn't contain an osm/gpx_file element.")
+ rescue LibXML::XML::Error, ArgumentError => ex
+ raise OSM::APIBadXMLError.new("trace", xml, ex.message)
+ end
+ end
+
+ def self.from_xml_node(pt, create=false)
+ trace = Trace.new
+
+ raise OSM::APIBadXMLError.new("trace", pt, "visibility missing") if pt['visibility'].nil?
+ trace.visibility = pt['visibility']
+
+ unless create
+ raise OSM::APIBadXMLError.new("trace", pt, "ID is required when updating.") if pt['id'].nil?
+ trace.id = pt['id'].to_i
+ # .to_i will return 0 if there is no number that can be parsed.
+ # We want to make sure that there is no id with zero anyway
+ raise OSM::APIBadUserInput.new("ID of trace cannot be zero when updating.") if trace.id == 0
+ end
+
+ # We don't care about the time, as it is explicitly set on create/update/delete
+ # We don't care about the visibility as it is implicit based on the action
+ # and set manually before the actual delete
+ trace.visible = true
+
+ description = pt.find('description').first
+ raise OSM::APIBadXMLError.new("trace", pt, "description missing") if description.nil?
+ trace.description = description.content
+
+ pt.find('tag').each do |tag|
+ trace.tags.build(:tag => tag.content)
+ end
+
+ return trace
+ end
+
+ def xml_file
+ # TODO *nix specific, could do to work on windows... would be functionally inferior though - check for '.gz'
+ filetype = `/usr/bin/file -bz #{trace_name}`.chomp
+ gzipped = filetype =~ /gzip compressed/
+ bzipped = filetype =~ /bzip2 compressed/
+ zipped = filetype =~ /Zip archive/
+ tarred = filetype =~ /tar archive/
+
+ if gzipped or bzipped or zipped or tarred then
+ tmpfile = Tempfile.new("trace.#{id}");
+
+ if tarred and gzipped then
+ system("tar -zxOf #{trace_name} > #{tmpfile.path}")
+ elsif tarred and bzipped then
+ system("tar -jxOf #{trace_name} > #{tmpfile.path}")
+ elsif tarred
+ system("tar -xOf #{trace_name} > #{tmpfile.path}")
+ elsif gzipped
+ system("gunzip -c #{trace_name} > #{tmpfile.path}")
+ elsif bzipped
+ system("bunzip2 -c #{trace_name} > #{tmpfile.path}")
+ elsif zipped
+ system("unzip -p #{trace_name} -x '__MACOSX/*' > #{tmpfile.path}")
+ end
+
+ tmpfile.unlink
+
+ file = tmpfile.file
+ else
+ file = File.open(trace_name)
+ end
+
+ return file
+ end
+
+ def import
+ logger.info("GPX Import importing #{name} (#{id}) from #{user.email}")
+
+ gpx = GPX::File.new(self.xml_file)
+
+ f_lat = 0
+ f_lon = 0
+ first = true
+
+ # If there are any existing points for this trace then delete
+ # them - we check for existing points first to avoid locking
+ # the table in the common case where there aren't any.
+ if Tracepoint.where(:gpx_id => self.id).exists?
+ Tracepoint.delete_all(:gpx_id => self.id)
+ end
+
+ gpx.points do |point|
+ if first
+ f_lat = point.latitude
+ f_lon = point.longitude
+ first = false
+ end
+
+ tp = Tracepoint.new
+ tp.lat = point.latitude
+ tp.lon = point.longitude
+ tp.altitude = point.altitude
+ tp.timestamp = point.timestamp
+ tp.gpx_id = id
+ tp.trackid = point.segment
+ tp.save!
+ end
+
+ if gpx.actual_points > 0
+ max_lat = Tracepoint.maximum('latitude', :conditions => ['gpx_id = ?', id])
+ min_lat = Tracepoint.minimum('latitude', :conditions => ['gpx_id = ?', id])
+ max_lon = Tracepoint.maximum('longitude', :conditions => ['gpx_id = ?', id])
+ min_lon = Tracepoint.minimum('longitude', :conditions => ['gpx_id = ?', id])
+
+ max_lat = max_lat.to_f / 10000000
+ min_lat = min_lat.to_f / 10000000
+ max_lon = max_lon.to_f / 10000000
+ min_lon = min_lon.to_f / 10000000
+
+ self.latitude = f_lat
+ self.longitude = f_lon
+ self.large_picture = gpx.picture(min_lat, min_lon, max_lat, max_lon, gpx.actual_points)
+ self.icon_picture = gpx.icon(min_lat, min_lon, max_lat, max_lon)
+ self.size = gpx.actual_points
+ self.inserted = true
+ self.save!
+ end
+
+ logger.info "done trace #{id}"
+
+ return gpx
+ end
end
projects / rails.git / blobdiff