X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/bbd769304cf29bbd9574fd3c7167feb7d5d0aa17..9e337e1ab8822fbdd61f6ed6afdb0c4e3c8727e2:/lib/osm.rb diff --git a/lib/osm.rb b/lib/osm.rb index bd9351026..f372979a8 100644 --- a/lib/osm.rb +++ b/lib/osm.rb @@ -10,18 +10,157 @@ module OSM # The base class for API Errors. class APIError < RuntimeError + def render_opts + { :text => "Generic API Error", :status => :internal_server_error, :content_type => "text/plain" } + end end # Raised when an API object is not found. class APINotFoundError < APIError + def render_opts + { :text => "The API wasn't found", :status => :not_found, :content_type => "text/plain" } + end end # Raised when a precondition to an API action fails sanity check. class APIPreconditionFailedError < APIError + def initialize(message = "") + @message = message + end + + def render_opts + { :text => "Precondition failed: #{@message}", :status => :precondition_failed, :content_type => "text/plain" } + end end # Raised when to delete an already-deleted object. class APIAlreadyDeletedError < APIError + def render_opts + { :text => "The object has already been deleted", :status => :gone, :content_type => "text/plain" } + end + end + + # Raised when the user logged in isn't the same as the changeset + class APIUserChangesetMismatchError < APIError + def render_opts + { :text => "The user doesn't own that changeset", :status => :conflict, :content_type => "text/plain" } + end + end + + # Raised when the changeset provided is already closed + class APIChangesetAlreadyClosedError < APIError + def initialize(changeset) + @changeset = changeset + end + + attr_reader :changeset + + def render_opts + { :text => "The changeset #{@changeset.id} was closed at #{@changeset.closed_at}.", :status => :conflict, :content_type => "text/plain" } + end + end + + # Raised when a change is expecting a changeset, but the changeset doesn't exist + class APIChangesetMissingError < APIError + def render_opts + { :text => "You need to supply a changeset to be able to make a change", :status => :conflict, :content_type => "text/plain" } + end + end + + # Raised when a diff is uploaded containing many changeset IDs which don't match + # the changeset ID that the diff was uploaded to. + class APIChangesetMismatchError < APIError + def initialize(provided, allowed) + @provided, @allowed = provided, allowed + end + + def render_opts + { :text => "Changeset mismatch: Provided #{@provided} but only " + + "#{@allowed} is allowed.", :status => :conflict, :content_type => "text/plain" } + end + end + + # Raised when a diff upload has an unknown action. You can only have create, + # modify, or delete + class APIChangesetActionInvalid < APIError + def initialize(provided) + @provided = provided + end + + def render_opts + { :text => "Unknown action #{@provided}, choices are create, modify, delete.", + :status => :bad_request, :content_type => "text/plain" } + end + end + + # Raised when bad XML is encountered which stops things parsing as + # they should. + class APIBadXMLError < APIError + def initialize(model, xml, message="") + @model, @xml, @message = model, xml, message + end + + def render_opts + { :text => "Cannot parse valid #{@model} from xml string #{@xml}. #{@message}", + :status => :bad_request, :content_type => "text/plain" } + end + end + + # Raised when the provided version is not equal to the latest in the db. + class APIVersionMismatchError < APIError + def initialize(id, type, provided, latest) + @id, @type, @provided, @latest = id, type, provided, latest + end + + attr_reader :provided, :latest, :id, :type + + def render_opts + { :text => "Version mismatch: Provided " + provided.to_s + + ", server had: " + latest.to_s + " of " + type + " " + id.to_s, + :status => :conflict, :content_type => "text/plain" } + end + end + + # raised when a two tags have a duplicate key string in an element. + # this is now forbidden by the API. + class APIDuplicateTagsError < APIError + def initialize(type, id, tag_key) + @type, @id, @tag_key = type, id, tag_key + end + + attr_reader :type, :id, :tag_key + + def render_opts + { :text => "Element #{@type}/#{@id} has duplicate tags with key #{@tag_key}.", + :status => :bad_request, :content_type => "text/plain" } + end + end + + # Raised when a way has more than the configured number of way nodes. + # This prevents ways from being to long and difficult to work with + class APITooManyWayNodesError < APIError + def initialize(provided, max) + @provided, @max = provided, max + end + + attr_reader :provided, :max + + def render_opts + { :text => "You tried to add #{provided} nodes to the way, however only #{max} are allowed", + :status => :bad_request, :content_type => "text/plain" } + end + end + + ## + # raised when user input couldn't be parsed + class APIBadUserInput < APIError + def initialize(message) + @message = message + end + + def render_opts + { :text => @message, :content_type => "text/plain", :status => :bad_request } + end end # Helper methods for going to/from mercator and lat/lng. @@ -70,199 +209,6 @@ module OSM end end - - # This piece of magic reads a GPX with SAX and spits out - # lat/lng and stuff - # - # This would print every latitude value: - # - # gpx = OSM::GPXImporter.new('somefile.gpx') - # gpx.points {|p| puts p['latitude']} - class GPXImporter - # FIXME swap REXML for libXML - attr_reader :possible_points - attr_reader :actual_points - attr_reader :tracksegs - - def initialize(file) - @file = file - end - - def points - @possible_points = 0 - @actual_points = 0 - @tracksegs = 0 - - lat = -1 - lon = -1 - ele = -1 - date = DateTime.now(); - gotlatlon = false - gotele = false - gotdate = false - - @file.rewind - - parser = REXML::Parsers::SAX2Parser.new(@file) - - parser.listen( :start_element, %w{ trkpt }) do |uri,localname,qname,attributes| - lat = attributes['lat'].to_f - lon = attributes['lon'].to_f - gotlatlon = true - gotele = false - gotdate = false - @possible_points += 1 - end - - parser.listen( :characters, %w{ ele } ) do |text| - ele = text - gotele = true - end - - parser.listen( :characters, %w{ time } ) do |text| - if text && text != '' - begin - date = DateTime.parse(text) - gotdate = true - rescue - end - end - end - - parser.listen( :end_element, %w{ trkseg } ) do |uri, localname, qname| - @tracksegs += 1 - end - - parser.listen( :end_element, %w{ trkpt } ) do |uri,localname,qname| - if gotlatlon && gotdate - ele = '0' unless gotele - if lat < 90 && lat > -90 && lon > -180 && lon < 180 - @actual_points += 1 - yield Hash['latitude' => lat, 'longitude' => lon, 'timestamp' => date, 'altitude' => ele, 'segment' => @tracksegs] - end - end - gotlatlon = false - gotele = false - gotdate = false - end - - parser.parse - end - - def get_picture(min_lat, min_lon, max_lat, max_lon, num_points) - #puts "getting picfor bbox #{min_lat},#{min_lon} - #{max_lat},#{max_lon}" - frames = 10 - width = 250 - height = 250 - proj = OSM::Mercator.new(min_lat, min_lon, max_lat, max_lon, width, height) - - linegc = Magick::Draw.new - linegc.stroke_linejoin('miter') - linegc.stroke_width(1) - linegc.stroke('#BBBBBB') - linegc.fill('#BBBBBB') - - highlightgc = Magick::Draw.new - highlightgc.stroke_linejoin('miter') - highlightgc.stroke_width(3) - highlightgc.stroke('#000000') - highlightgc.fill('#000000') - - images = [] - - frames.times do - image = Magick::Image.new(width, height) do |image| - image.background_color = 'white' - image.format = 'GIF' - end - - images << image - end - - oldpx = 0.0 - oldpy = 0.0 - - first = true - - m = 0 - mm = 0 - points do |p| - px = proj.x(p['longitude']) - py = proj.y(p['latitude']) - - if m > 0 - frames.times do |n| - if n == mm - gc = highlightgc.dup - else - gc = linegc.dup - end - - gc.line(px, py, oldpx, oldpy) - - gc.draw(images[n]) - end - end - - m += 1 - if m > num_points.to_f / frames.to_f * (mm+1) - mm += 1 - end - - oldpy = py - oldpx = px - end - - il = Magick::ImageList.new - - images.each do |f| - il << f - end - - il.delay = 50 - il.format = 'GIF' - - return il.to_blob - end - - def get_icon(min_lat, min_lon, max_lat, max_lon) - #puts "getting icon for bbox #{min_lat},#{min_lon} - #{max_lat},#{max_lon}" - width = 50 - height = 50 - proj = OSM::Mercator.new(min_lat, min_lon, max_lat, max_lon, width, height) - - gc = Magick::Draw.new - gc.stroke_linejoin('miter') - gc.stroke_width(1) - gc.stroke('#000000') - gc.fill('#000000') - - image = Magick::Image.new(width, height) do |image| - image.background_color = 'white' - image.format = 'GIF' - end - - oldpx = 0.0 - oldpy = 0.0 - - first = true - - points do |p| - px = proj.x(p['longitude']) - py = proj.y(p['latitude']) - - gc.dup.line(px, py, oldpx, oldpy).draw(image) unless first - - first = false - oldpy = py - oldpx = px - end - - return image.to_blob - end - - end - class GreatCircle include Math @@ -294,7 +240,7 @@ module OSM class GeoRSS def initialize(feed_title='OpenStreetMap GPS Traces', feed_description='OpenStreetMap GPS Traces', feed_url='http://www.openstreetmap.org/traces/') @doc = XML::Document.new - @doc.encoding = 'UTF-8' + @doc.encoding = XML::Encoding::UTF_8 rss = XML::Node.new 'rss' @doc.root = rss @@ -380,10 +326,10 @@ module OSM class API def get_xml_doc doc = XML::Document.new - doc.encoding = 'UTF-8' + doc.encoding = XML::Encoding::UTF_8 root = XML::Node.new 'osm' root['version'] = API_VERSION - root['generator'] = 'OpenStreetMap server' + root['generator'] = GENERATOR doc.root = root return doc end