X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/d626256bc2f2798202dbb4656f2f53aab0815f2c..3bd92c16704823e79ac61f27d05c1a9be52858f5:/app/controllers/amf_controller.rb?ds=sidebyside diff --git a/app/controllers/amf_controller.rb b/app/controllers/amf_controller.rb index 950fd848f..4b92db11c 100644 --- a/app/controllers/amf_controller.rb +++ b/app/controllers/amf_controller.rb @@ -4,8 +4,22 @@ class AmfController < ApplicationController session :off before_filter :check_write_availability + # AMF controller for Potlatch + # --------------------------- + # All interaction between Potlatch (as a .SWF application) and the + # OSM database takes place using this controller. Messages are + # encoded in the Actionscript Message Format (AMF). + # + # Public domain. Set your tab width to 4 to read this document. :) + # editions Systeme D / Richard Fairhurst 2004-2008 + # + # All in/out parameters are floats unless explicitly stated. + # + # to trap errors (getway_old,putway,putpoi,deleteway only): + # return(-1,"message") <-- just puts up a dialogue + # return(-2,"message") <-- also asks the user to e-mail me # to log: - # RAILS_DEFAULT_LOGGER.error("Args: #{args[0]}, #{args[1]}, #{args[2]}, #{args[3]}") + # RAILS_DEFAULT_LOGGER.error("Args: #{args[0]}, #{args[1]}, #{args[2]}, #{args[3]}") # ==================================================================== # Main AMF handler @@ -14,9 +28,10 @@ class AmfController < ApplicationController def talk req=StringIO.new(request.raw_post+0.chr) # Get POST data as request - # (cf http://www.ruby-forum.com/topic/122163) + # (cf http://www.ruby-forum.com/topic/122163) req.read(2) # Skip version indicator and client ID results={} # Results of each body + renumberednodes={} # Shared across repeated putways # ------------- # Parse request @@ -38,13 +53,18 @@ class AmfController < ApplicationController args=getvalue(req) # | get response (probably an array) case message - when 'getpresets'; results[index]=putdata(index,getpresets) - when 'whichways'; results[index]=putdata(index,whichways(args)) - when 'getway'; results[index]=putdata(index,getway(args)) - when 'putway'; results[index]=putdata(index,putway(args)) - when 'deleteway'; results[index]=putdata(index,deleteway(args)) - when 'putpoi'; results[index]=putdata(index,putpoi(args)) - when 'getpoi'; results[index]=putdata(index,getpoi(args)) + when 'getpresets'; results[index]=putdata(index,getpresets) + when 'whichways'; results[index]=putdata(index,whichways(args)) + when 'whichways_deleted'; results[index]=putdata(index,whichways_deleted(args)) + when 'getway'; results[index]=putdata(index,getway(args)) + when 'getway_old'; results[index]=putdata(index,getway_old(args)) + when 'getway_history'; results[index]=putdata(index,getway_history(args)) + when 'putway'; r=putway(args,renumberednodes) + renumberednodes=r[3] + results[index]=putdata(index,r) + when 'deleteway'; results[index]=putdata(index,deleteway(args)) + when 'putpoi'; results[index]=putdata(index,putpoi(args)) + when 'getpoi'; results[index]=putdata(index,getpoi(args)) end end @@ -53,163 +73,39 @@ class AmfController < ApplicationController RAILS_DEFAULT_LOGGER.info(" Response: start") a,b=results.length.divmod(256) - render :content_type => "application/x-amf", :text => proc { |response, output| - output.write 0.chr+0.chr+0.chr+0.chr+a.chr+b.chr - results.each do |k,v| - output.write(v) - end - } + render :content_type => "application/x-amf", :text => proc { |response, output| + output.write 0.chr+0.chr+0.chr+0.chr+a.chr+b.chr + results.each do |k,v| + output.write(v) + end + } RAILS_DEFAULT_LOGGER.info(" Response: end") end private + # Return presets (default tags and crap) to potlatch + # Global is set up in config/environment.rb on startup, code is in lib/osm.rb + def getpresets + return POTLATCH_PRESETS + end + # ==================================================================== # Remote calls - # ----- getpresets - # return presets,presetmenus and presetnames arrays - def getpresets - presets={} - presetmenus={}; presetmenus['point']=[]; presetmenus['way']=[]; presetmenus['POI']=[] - presetnames={}; presetnames['point']={}; presetnames['way']={}; presetnames['POI']={} - presettype='' - presetcategory='' - - RAILS_DEFAULT_LOGGER.info(" Message: getpresets") - - # File.open("config/potlatch/presets.txt") do |file| - - # Temporary patch to get around filepath problem - # To remove this patch and make the code nice again: - # 1. uncomment above line - # 2. fix the path in the above line - # 3. delete this here document, and the following line (StringIO....) - - txt=<<-EOF -way/road -motorway: highway=motorway,ref=(type road number) -trunk road: highway=trunk,ref=(type road number),name=(type road name) -primary road: highway=primary,ref=(type road number),name=(type road name) -secondary road: highway=secondary,ref=(type road number),name=(type road name) -tertiary road: highway=tertiary,ref=,name=(type road name) -residential road: highway=residential,ref=,name=(type road name) -unclassified road: highway=unclassified,ref=,name=(type road name) - -way/footway -footpath: highway=footway,foot=yes -bridleway: highway=bridleway,foot=yes -byway: highway=unsurfaced,foot=yes -permissive path: highway=footway,foot=permissive - -way/cycleway -cycle lane: highway=cycleway,cycleway=lane,ncn_ref= -cycle track: highway=cycleway,cycleway=track,ncn_ref= -cycle lane (NCN): highway=cycleway,cycleway=lane,name=(type name here),ncn_ref=(type route number) -cycle track (NCN): highway=cycleway,cycleway=track,name=(type name here),ncn_ref=(type route number) - -way/waterway -canal: waterway=canal,name=(type name here) -navigable river: waterway=river,boat=yes,name=(type name here) -navigable drain: waterway=drain,boat=yes,name=(type name here) -derelict canal: waterway=derelict_canal,name=(type name here) -unnavigable river: waterway=river,boat=no,name=(type name here) -unnavigable drain: waterway=drain,boat=no,name=(type name here) - -way/railway -railway: railway=rail -tramway: railway=tram -light railway: railway=light_rail -preserved railway: railway=preserved -disused railway tracks: railway=disused -course of old railway: railway=abandoned - -way/natural -lake: natural=water,landuse= -forest: landuse=forest,natural= - -point/road -mini roundabout: highway=mini_roundabout -traffic lights: highway=traffic_signals - -point/footway -bridge: highway=bridge -gate: highway=gate -stile: highway=stile -cattle grid: highway=cattle_grid - -point/cycleway -gate: highway=gate - -point/waterway -lock gate: waterway=lock_gate -weir: waterway=weir -aqueduct: waterway=aqueduct -winding hole: waterway=turning_point -mooring: waterway=mooring - -point/railway -station: railway=station -viaduct: railway=viaduct -level crossing: railway=crossing - -point/natural -peak: natural=peak - -POI/road -car park: amenity=parking -petrol station: amenity=fuel - -POI/cycleway -bike park: amenity=bicycle_parking - -POI/place -city: place=city,name=(type name here),is_in=(type region or county) -town: place=town,name=(type name here),is_in=(type region or county) -suburb: place=suburb,name=(type name here),is_in=(type region or county) -village: place=village,name=(type name here),is_in=(type region or county) -hamlet: place=hamlet,name=(type name here),is_in=(type region or county) - -POI/tourism -attraction: tourism=attraction,amenity=,religion=,denomination= -church: tourism=,amenity=place_of_worship,name=(type name here),religion=christian,denomination=(type denomination here) -hotel: tourism=hotel,amenity=,religion=,denomination= -other religious: tourism=,amenity=place_of_worship,name=(type name here),religion=(type religion),denomination= -post box: amenity=post_box,tourism=,name=,religion=,denomination= -post office: amenity=post_office,tourism=,name=,religion=,denomination= -pub: tourism=,amenity=pub,name=(type name here),religion=,denomination= - -POI/natural -peak: point=peak -EOF - - StringIO.open(txt) do |file| - file.each_line {|line| - t=line.chomp - if (t=~/(\w+)\/(\w+)/) then - presettype=$1 - presetcategory=$2 - presetmenus[presettype].push(presetcategory) - presetnames[presettype][presetcategory]=["(no preset)"] - elsif (t=~/^(.+):\s?(.+)$/) then - pre=$1; kv=$2 - presetnames[presettype][presetcategory].push(pre) - presets[pre]={} - kv.split(',').each {|a| - if (a=~/^(.+)=(.*)$/) then presets[pre][$1]=$2 end - } - end - } - end - return [presets,presetmenus,presetnames] - end - # ----- whichways(left,bottom,right,top) - # return array of ways in current bounding box - # at present, instead of using correct (=more complex) SQL to find - # corner-crossing ways, it simply enlarges the bounding box by +/- 0.01 + # ----- whichways + + # Find all the way ids and nodes (including tags and projected lat/lng) which aren't part of those ways in an are + # + # The argument is an array containing the following, in order: + # 0. minimum longitude + # 1. minimum latitude + # 2. maximum longitude + # 3. maximum latitude + # 4. baselong, 5. basey, 6. masterscale as above def whichways(args) xmin = args[0].to_f-0.01 @@ -222,85 +118,225 @@ EOF RAILS_DEFAULT_LOGGER.info(" Message: whichways, bbox=#{xmin},#{ymin},#{xmax},#{ymax}") - waylist = ActiveRecord::Base.connection.select_all("SELECT DISTINCT current_way_nodes.id AS wayid"+ - " FROM current_way_nodes,current_nodes,current_ways "+ - " WHERE current_nodes.id=current_way_nodes.node_id "+ - " AND current_nodes.visible=1 "+ - " AND current_ways.id=current_way_nodes.id "+ - " AND current_ways.visible=1 "+ - " AND "+OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")) + # find the way ids in an area + nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax,:conditions => "visible = 1", :include => :way_nodes) + waynodes_in_area = nodes_in_area.collect {|node| node.way_nodes }.flatten + ways = waynodes_in_area.collect {|way_node| way_node.id[0]}.uniq + + # find the node ids in an area that aren't part of ways + node_ids_in_area = nodes_in_area.collect {|node| node.id}.uniq + node_ids_used_in_ways = waynodes_in_area.collect {|way_node| way_node.node_id}.uniq + node_ids_not_used_in_area = node_ids_in_area - node_ids_used_in_ways + nodes_not_used_in_area = Node.find(node_ids_not_used_in_area) + points = nodes_not_used_in_area.collect {|n| [n.id, n.lon_potlatch(baselong,masterscale), n.lat_potlatch(basey,masterscale), n.tags_as_hash] } + + [ways,points] + end - ways = waylist.collect {|a| a['wayid'].to_i } # get an array of way id's + # ----- whichways_deleted + # return array of deleted ways in current bounding box + # in: as whichways + # does: finds all deleted ways with a deleted node in bounding box + # out: [0] array of way ids + + def whichways_deleted(args) + xmin = args[0].to_f-0.01 + ymin = args[1].to_f-0.01 + xmax = args[2].to_f+0.01 + ymax = args[3].to_f+0.01 + baselong = args[4] + basey = args[5] + masterscale = args[6] - pointlist = ActiveRecord::Base.connection.select_all("SELECT current_nodes.id,current_nodes.latitude*0.0000001 AS lat,current_nodes.longitude*0.0000001 AS lng,current_nodes.tags "+ - " FROM current_nodes "+ - " LEFT OUTER JOIN current_way_nodes cwn ON cwn.node_id=current_nodes.id "+ - " WHERE "+OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")+ - " AND cwn.id IS NULL "+ - " AND current_nodes.visible=1") - points = pointlist.collect {|a| [a['id'],long2coord(a['lng'].to_f,baselong,masterscale),lat2coord(a['lat'].to_f,basey,masterscale),tag2array(a['tags'])] } # get a list of node ids and their tags - return [ways,points] + sql=<<-EOF + SELECT DISTINCT current_ways.id + FROM current_nodes,way_nodes,current_ways + WHERE #{OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")} + AND way_nodes.node_id=current_nodes.id + AND way_nodes.id=current_ways.id + AND current_nodes.visible=0 + AND current_ways.visible=0 + EOF + waylist = ActiveRecord::Base.connection.select_all(sql) + ways = waylist.collect {|a| a['id'].to_i } + [ways] end - # ----- getway (objectname, way, baselong, basey, masterscale) - # returns objectname, array of co-ordinates, attributes, - # xmin,xmax,ymin,ymax + + # ----- getway + + # Get a way with all of it's nodes and tags + # The input is an array with the following components, in order: + # 0. wayid - the ID of the way to get + # 1. baselong - origin of SWF map (longitude) + # 2. basey - origin of SWF map (latitude) + # 3. masterscale - SWF map scale + # + # The output is an array which contains all the nodes (with projected + # latitude and longitude) and tags for a way (and all the nodes tags). + # It also has the way's unprojected (WGS84) bbox. + # + # FIXME: The server really shouldn't be figuring out a ways bounding box and doing projection for potlatch + # FIXME: the argument splitting should be done in the 'talk' method, not here def getway(args) - objname,wayid,baselong,basey,masterscale=args + wayid,baselong,basey,masterscale = args wayid = wayid.to_i - points = [] - lastid = -1 - xmin = ymin = 999999 - xmax = ymax = -999999 RAILS_DEFAULT_LOGGER.info(" Message: getway, id=#{wayid}") - readwayquery(wayid).each {|row| - points<<[long2coord(row['longitude'].to_f,baselong,masterscale),lat2coord(row['latitude'].to_f,basey,masterscale),row['id'].to_i,nil,tag2array(row['tags'])] - xmin = [xmin,row['longitude'].to_f].min - xmax = [xmax,row['longitude'].to_f].max - ymin = [ymin,row['latitude'].to_f].min - ymax = [ymax,row['latitude'].to_f].max + way = Way.find_eager(wayid) + long_array = [] + lat_array = [] + points = [] + + way.way_nodes.each do |way_node| + node = way_node.node # get the node record + projected_longitude = node.lon_potlatch(baselong,masterscale) # do projection for potlatch + projected_latitude = node.lat_potlatch(basey,masterscale) + id = node.id + tags_hash = node.tags_as_hash + + points << [projected_longitude, projected_latitude, id, nil, tags_hash] + long_array << projected_longitude + lat_array << projected_latitude + end + + [wayid,points,way.tags,long_array.min,long_array.max,lat_array.min,lat_array.max] + end + + # ----- getway_old + # returns old version of way + + # in: [0] way id, + # [1] way version to get (or -1 for "last deleted version") + # [2] baselong, [3] basey, [4] masterscale + # does: gets old version of way and all constituent nodes + # for undelete, always uses the most recent version of each node + # (even if it's moved) + # for revert, uses the historic version of each node, but if that node is + # still visible and has been changed since, generates a new node id + # out: [0] 0 (code for success), [1] SWF object name, + # [2] array of points (as getway _except_ [3] is node.visible?, 0 or 1), + # [4] xmin, [5] xmax, [6] ymin, [7] ymax (unprojected bbox), + # [8] way version + + def getway_old(args) + RAILS_DEFAULT_LOGGER.info(" Message: getway_old (server is #{SERVER_URL})") + # if SERVER_URL=="www.openstreetmap.org" then return -1,"Revert is not currently enabled on the OpenStreetMap server." end + + wayid,version,baselong,basey,masterscale=args + wayid = wayid.to_i + version = version.to_i + xmin = ymin = 999999 + xmax = ymax = -999999 + points=[] + if version<0 + historic=false + version=getlastversion(wayid,version) + else + historic=true + end + readwayquery_old(wayid,version,historic).each { |row| + points<<[long2coord(row['longitude'].to_f,baselong,masterscale),lat2coord(row['latitude'].to_f,basey,masterscale),row['id'].to_i,row['visible'].to_i,tag2array(row['tags'].to_s)] + xmin=[xmin,row['longitude'].to_f].min + xmax=[xmax,row['longitude'].to_f].max + ymin=[ymin,row['latitude' ].to_f].min + ymax=[ymax,row['latitude' ].to_f].max } + # get tags from this version attributes={} - attrlist=ActiveRecord::Base.connection.select_all "SELECT k,v FROM current_way_tags WHERE id=#{wayid}" + attrlist=ActiveRecord::Base.connection.select_all "SELECT k,v FROM way_tags WHERE id=#{wayid} AND version=#{version}" attrlist.each {|a| attributes[a['k'].gsub(':','|')]=a['v'] } + attributes['history']="Retrieved from v"+version.to_s - [objname,points,attributes,xmin,xmax,ymin,ymax] + [0,wayid,points,attributes,xmin,xmax,ymin,ymax,version] end - # ----- putway (user token, way, array of co-ordinates, array of attributes, - # baselong, basey, masterscale) - # returns current way ID, new way ID, hash of renumbered nodes, - # xmin,xmax,ymin,ymax + # ----- getway_history + # find history of a way + + # in: [0] way id + # does: finds history of a way + # out: [0] array of previous versions (where each is + # [0] version, [1] db timestamp (string), + # [2] visible 0 or 1, + # [3] username or 'anonymous' (string)) - def putway(args) + def getway_history(args) + wayid=args[0] + history=[] + sql=<<-EOF + SELECT version,timestamp,visible,display_name,data_public + FROM ways,users + WHERE ways.id=#{wayid} + AND ways.user_id=users.id + AND ways.visible=1 + ORDER BY version DESC + EOF + histlist=ActiveRecord::Base.connection.select_all(sql) + histlist.each { |row| + if row['data_public'].to_i==1 then user=row['display_name'] else user='anonymous' end + history<<[row['version'],row['timestamp'],row['visible'],user] + } + [history] + end + + # ----- putway + # saves a way to the database + + # in: [0] user token (string), + # [1] original way id (may be negative), + # [2] array of points (as getway/getway_old), + # [3] hash of way tags, + # [4] original way version (0 if not a reverted/undeleted way), + # [5] baselong, [6] basey, [7] masterscale + # does: saves way to the database + # all constituent nodes are created/updated as necessary + # (or deleted if they were in the old version and are otherwise unused) + # out: [0] 0 (code for success), [1] original way id (unchanged), + # [2] new way id, [3] hash of renumbered nodes (old id=>new id), + # [4] xmin, [5] xmax, [6] ymin, [7] ymax (unprojected bbox) + + def putway(args,renumberednodes) RAILS_DEFAULT_LOGGER.info(" putway started") - usertoken,originalway,points,attributes,baselong,basey,masterscale=args + usertoken,originalway,points,attributes,oldversion,baselong,basey,masterscale=args uid=getuserid(usertoken) - return if !uid + if !uid then return -1,"You are not logged in, so the way could not be saved." end + RAILS_DEFAULT_LOGGER.info(" putway authenticated happily") - db_uqn='unin'+uid.to_s+originalway.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquenodes table name, typically 51 chars - db_now='@now'+uid.to_s+originalway.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars + db_uqn='unin'+(rand*100).to_i.to_s+uid.to_s+originalway.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquenodes table name, typically 51 chars + db_now='@now'+(rand*100).to_i.to_s+uid.to_s+originalway.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()") originalway=originalway.to_i + oldversion=oldversion.to_i RAILS_DEFAULT_LOGGER.info(" Message: putway, id=#{originalway}") + # -- Temporary check for null IDs + + points.each do |a| + if a[2]==0 or a[2].nil? then return -2,"Server error - node with id 0 found in way #{originalway}." end + end + # -- 3. read original way into memory - xc={}; yc={}; tagc={} + xc={}; yc={}; tagc={}; vc={} if originalway>0 way=originalway - readwayquery(way).each { |row| + if oldversion==0 then r=readwayquery(way,false) + else r=readwayquery_old(way,oldversion,true) end + r.each { |row| id=row['id'].to_i - xc[id]=row['longitude'].to_f - yc[id]=row['latitude' ].to_f - tagc[id]=row['tags'] + if (id>0) then + xc[id]=row['longitude'].to_f + yc[id]=row['latitude' ].to_f + tagc[id]=row['tags'] + vc[id]=row['visible'].to_i + end } ActiveRecord::Base.connection.update("UPDATE current_ways SET timestamp=#{db_now},user_id=#{uid},visible=1 WHERE id=#{way}") else @@ -316,8 +352,7 @@ EOF xmin=ymin= 999999 xmax=ymax=-999999 insertsql='' - renumberednodes={} - nodelist=[] + nodelist=[] points.each_index do |i| xs=coord2long(points[i][0],masterscale,baselong) @@ -325,7 +360,7 @@ EOF xmin=[xs,xmin].min; xmax=[xs,xmax].max ymin=[ys,ymin].min; ymax=[ys,ymax].max node=points[i][2].to_i - tagstr=array2tag(points[i][4]) + tagstr=array2tag(points[i][4]) tagsql="'"+sqlescape(tagstr)+"'" lat=(ys * 10000000).round long=(xs * 10000000).round @@ -334,20 +369,20 @@ EOF # compare node if node<0 # new node - create - if renumberednodes[node.to_s].nil? + if renumberednodes[node.to_s].nil? newnode=ActiveRecord::Base.connection.insert("INSERT INTO current_nodes ( latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES ( #{lat},#{long},#{db_now},#{uid},1,#{tagsql},#{tile})") - ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{newnode},#{lat},#{long},#{db_now},#{uid},1,#{tagsql},#{tile})") + ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{newnode},#{lat},#{long},#{db_now},#{uid},1,#{tagsql},#{tile})") points[i][2]=newnode nodelist.push(newnode) renumberednodes[node.to_s]=newnode.to_s - else + else points[i][2]=renumberednodes[node.to_s].to_i - end + end elsif xc.has_key?(node) - nodelist.push(node) + nodelist.push(node) # old node from original way - update - if (xs!=xc[node] or (ys/0.0000001).round!=(yc[node]/0.0000001).round or tagstr!=tagc[node]) + if ((xs/0.0000001).round!=(xc[node]/0.0000001).round or (ys/0.0000001).round!=(yc[node]/0.0000001).round or tagstr!=tagc[node] or vc[node]==0) ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{node},#{lat},#{long},#{db_now},#{uid},1,#{tagsql},#{tile})") ActiveRecord::Base.connection.update("UPDATE current_nodes SET latitude=#{lat},longitude=#{long},timestamp=#{db_now},user_id=#{uid},tags=#{tagsql},visible=1,tile=#{tile} WHERE id=#{node}") end @@ -357,15 +392,15 @@ EOF end - # -- 6a. delete any nodes not in modified way + # -- 6a. delete any nodes not in modified way createuniquenodes(way,db_uqn,nodelist) # nodes which appear in this way but no other sql=<<-EOF - INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tile) - SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0,cn.tile - FROM current_nodes AS cn,#{db_uqn} - WHERE cn.id=node_id + INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tile) + SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0,cn.tile + FROM current_nodes AS cn,#{db_uqn} + WHERE cn.id=node_id EOF ActiveRecord::Base.connection.insert(sql) @@ -376,10 +411,10 @@ EOF EOF ActiveRecord::Base.connection.update(sql) - deleteuniquenoderelations(db_uqn,uid,db_now) - ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqn}") + deleteuniquenoderelations(db_uqn,uid,db_now) + ActiveRecord::Base.connection.execute("DROP TEMPORARY TABLE #{db_uqn}") - # 6b. insert new version of route into way_nodes + # 6b. insert new version of route into way_nodes insertsql ='' currentsql='' @@ -413,29 +448,38 @@ EOF if (insertsql !='') then ActiveRecord::Base.connection.insert("INSERT INTO way_tags (id,k,v,version) VALUES #{insertsql}" ) end if (currentsql!='') then ActiveRecord::Base.connection.insert("INSERT INTO current_way_tags (id,k,v) VALUES #{currentsql}") end - [originalway,way,renumberednodes,xmin,xmax,ymin,ymax] + [0,originalway,way,renumberednodes,xmin,xmax,ymin,ymax] end - # ----- putpoi (user token, id, x,y,tag array,visible,baselong,basey,masterscale) - # returns current id, new id - # if new: add new row to current_nodes and nodes - # if old: add new row to nodes, update current_nodes + # ----- putpoi + # save POI to the database + + # in: [0] user token (string), + # [1] original node id (may be negative), + # [2] projected longitude, [3] projected latitude, + # [4] hash of tags, [5] visible (0 to delete, 1 otherwise), + # [6] baselong, [7] basey, [8] masterscale + # does: saves POI node to the database + # refuses save if the node has since become part of a way + # out: [0] 0 (success), [1] original node id (unchanged), + # [2] new node id def putpoi(args) usertoken,id,x,y,tags,visible,baselong,basey,masterscale=args uid=getuserid(usertoken) - return if !uid - db_now='@now'+uid.to_s+id.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars + if !uid then return -1,"You are not logged in, so the point could not be saved." end + + db_now='@now'+(rand*100).to_i.to_s+uid.to_s+id.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()") id=id.to_i visible=visible.to_i - if visible==0 then - # if deleting, check node hasn't become part of a way - inway=ActiveRecord::Base.connection.select_one("SELECT cw.id FROM current_ways cw,current_way_nodes cwn WHERE cw.id=cwn.id AND cw.visible=1 AND cwn.node_id=#{id} LIMIT 1") - unless inway.nil? then return [id,id] end # should really return an error - deleteitemrelations(id,'node',uid,db_now) - end + if visible==0 then + # if deleting, check node hasn't become part of a way + inway=ActiveRecord::Base.connection.select_one("SELECT cw.id FROM current_ways cw,current_way_nodes cwn WHERE cw.id=cwn.id AND cw.visible=1 AND cwn.node_id=#{id} LIMIT 1") + unless inway.nil? then return -1,"The point has since become part of a way, so you cannot save it as a POI." end + deleteitemrelations(id,'node',uid,db_now) + end x=coord2long(x.to_f,masterscale,baselong) y=coord2lat(y.to_f,masterscale,basey) @@ -443,60 +487,71 @@ EOF lat=(y * 10000000).round long=(x * 10000000).round tile=QuadTile.tile_for_point(y, x) - + if (id>0) then - ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{id},#{lat},#{long},#{db_now},#{uid},#{visible},#{tagsql},#{tile})"); - ActiveRecord::Base.connection.update("UPDATE current_nodes SET latitude=#{lat},longitude=#{long},timestamp=#{db_now},user_id=#{uid},visible=#{visible},tags=#{tagsql},tile=#{tile} WHERE id=#{id}"); - newid=id + ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{id},#{lat},#{long},#{db_now},#{uid},#{visible},#{tagsql},#{tile})"); + ActiveRecord::Base.connection.update("UPDATE current_nodes SET latitude=#{lat},longitude=#{long},timestamp=#{db_now},user_id=#{uid},visible=#{visible},tags=#{tagsql},tile=#{tile} WHERE id=#{id}"); + newid=id else - newid=ActiveRecord::Base.connection.insert("INSERT INTO current_nodes (latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{lat},#{long},#{db_now},#{uid},#{visible},#{tagsql},#{tile})"); - ActiveRecord::Base.connection.update("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{newid},#{lat},#{long},#{db_now},#{uid},#{visible},#{tagsql},#{tile})"); + newid=ActiveRecord::Base.connection.insert("INSERT INTO current_nodes (latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{lat},#{long},#{db_now},#{uid},#{visible},#{tagsql},#{tile})"); + ActiveRecord::Base.connection.update("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{newid},#{lat},#{long},#{db_now},#{uid},#{visible},#{tagsql},#{tile})"); end - [id,newid] + [0,id,newid] end - # ----- getpoi (id,baselong,basey,masterscale) - # returns id,x,y,tag array - + # ----- getpoi + # read POI from database + # (only called on revert: POIs are usually read by whichways) + + # in: [0] node id, [1] baselong, [2] basey, [3] masterscale + # does: reads POI + # out: [0] id (unchanged), [1] projected long, [2] projected lat, + # [3] hash of tags + def getpoi(args) - id,baselong,basey,masterscale=args; id=id.to_i - poi=ActiveRecord::Base.connection.select_one("SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lng,tags "+ - "FROM current_nodes WHERE visible=1 AND id=#{id}") - if poi.nil? then return [nil,nil,nil,''] end - [id, - long2coord(poi['lng'].to_f,baselong,masterscale), - lat2coord(poi['lat'].to_f,basey,masterscale), - tag2array(poi['tags'])] + id,baselong,basey,masterscale=args; id=id.to_i + poi=ActiveRecord::Base.connection.select_one("SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lng,tags "+ + "FROM current_nodes WHERE visible=1 AND id=#{id}") + if poi.nil? then return [nil,nil,nil,''] end + [id, + long2coord(poi['lng'].to_f,baselong,masterscale), + lat2coord(poi['lat'].to_f,basey,masterscale), + tag2array(poi['tags'])] end - # ----- deleteway (user token, way, nodes to keep) - # returns way ID only + # ----- deleteway + # delete way and constituent nodes from database + + # in: [0] user token (string), [1] way id + # does: deletes way from db and any constituent nodes not used elsewhere + # also removes ways/nodes from any relations they're in + # out: [0] 0 (success), [1] way id (unchanged) def deleteway(args) - usertoken,way,preserve=args + usertoken,way=args RAILS_DEFAULT_LOGGER.info(" Message: deleteway, id=#{way}") + uid=getuserid(usertoken) + if !uid then return -1,"You are not logged in, so the way could not be deleted." end - uid=getuserid(usertoken); if !uid then return end way=way.to_i - - db_uqn='unin'+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquenodes table name, typically 51 chars - db_now='@now'+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars + db_uqn='unin'+(rand*100).to_i.to_s+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquenodes table name, typically 51 chars + db_now='@now'+(rand*100).to_i.to_s+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()") # - delete any otherwise unused nodes - + createuniquenodes(way,db_uqn,[]) - unless (preserve.empty?) then - ActiveRecord::Base.connection.execute("DELETE FROM #{db_uqn} WHERE node_id IN ("+preserve.join(',')+")") - end + # unless (preserve.empty?) then + # ActiveRecord::Base.connection.execute("DELETE FROM #{db_uqn} WHERE node_id IN ("+preserve.join(',')+")") + # end sql=<<-EOF - INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tile) - SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0,cn.tile - FROM current_nodes AS cn,#{db_uqn} - WHERE cn.id=node_id + INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tile) + SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0,cn.tile + FROM current_nodes AS cn,#{db_uqn} + WHERE cn.id=node_id EOF ActiveRecord::Base.connection.insert(sql) @@ -507,295 +562,351 @@ EOF EOF ActiveRecord::Base.connection.update(sql) - deleteuniquenoderelations(db_uqn,uid,db_now) - ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqn}") + deleteuniquenoderelations(db_uqn,uid,db_now) + ActiveRecord::Base.connection.execute("DROP TEMPORARY TABLE #{db_uqn}") # - delete way - + ActiveRecord::Base.connection.insert("INSERT INTO ways (id,user_id,timestamp,visible) VALUES (#{way},#{uid},#{db_now},0)") ActiveRecord::Base.connection.update("UPDATE current_ways SET user_id=#{uid},timestamp=#{db_now},visible=0 WHERE id=#{way}") ActiveRecord::Base.connection.execute("DELETE FROM current_way_nodes WHERE id=#{way}") ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}") - deleteitemrelations(way,'way',uid,db_now) - way -end + deleteitemrelations(way,'way',uid,db_now) + [0,way] + end -# ==================================================================== -# Support functions for remote calls + # ==================================================================== + # Support functions for remote calls -def readwayquery(id) - ActiveRecord::Base.connection.select_all "SELECT latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,current_nodes.id,tags "+ - " FROM current_way_nodes,current_nodes "+ - " WHERE current_way_nodes.id=#{id} "+ - " AND current_way_nodes.node_id=current_nodes.id "+ - " AND current_nodes.visible=1 "+ - " ORDER BY sequence_id" -end + def readwayquery(id,insistonvisible) + sql=<<-EOF + SELECT latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,current_nodes.id,tags,visible + FROM current_way_nodes,current_nodes + WHERE current_way_nodes.id=#{id} + AND current_way_nodes.node_id=current_nodes.id + EOF + if insistonvisible then sql+=" AND current_nodes.visible=1 " end + sql+=" ORDER BY sequence_id" + ActiveRecord::Base.connection.select_all(sql) + end -def createuniquenodes(way,uqn_name,nodelist) - # Find nodes which appear in this way but no others - sql=<<-EOF - CREATE TEMPORARY TABLE #{uqn_name} - SELECT a.node_id - FROM (SELECT DISTINCT node_id FROM current_way_nodes - WHERE id=#{way}) a - LEFT JOIN current_way_nodes b - ON b.node_id=a.node_id - AND b.id!=#{way} - WHERE b.node_id IS NULL - EOF - unless nodelist.empty? then - sql+="AND a.node_id NOT IN ("+nodelist.join(',')+")" - end - ActiveRecord::Base.connection.execute(sql) -end + def getlastversion(id,version) + row=ActiveRecord::Base.connection.select_one("SELECT version FROM ways WHERE id=#{id} AND visible=1 ORDER BY version DESC LIMIT 1") + row['version'] + end + def readwayquery_old(id,version,historic) + # Node handling on undelete (historic=false): + # - always use the node specified, even if it's moved + # Node handling on revert (historic=true): + # - if it's a visible node, use a new node id (i.e. not mucking up the old one) + # which means the SWF needs to allocate new ids + # - if it's an invisible node, we can reuse the old node id -# ==================================================================== -# Relations handling -# deleteuniquenoderelations(uqn_name,uid,db_now) -# deleteitemrelations(way|node,'way'|'node',uid,db_now) + # get node list from specified version of way, + # and the _current_ lat/long/tags of each node -def deleteuniquenoderelations(uqn_name,uid,db_now) - sql=<<-EOF - SELECT node_id,cr.id FROM #{uqn_name},current_relation_members crm,current_relations cr - WHERE crm.member_id=node_id - AND crm.member_type='node' - AND crm.id=cr.id - AND cr.visible=1 - EOF + row=ActiveRecord::Base.connection.select_one("SELECT timestamp FROM ways WHERE version=#{version} AND id=#{id}") + waytime=row['timestamp'] - relnodes=ActiveRecord::Base.connection.select_all(sql) - relnodes.each do |a| - removefromrelation(a['node_id'],'node',a['id'],uid,db_now) - end -end + sql=<<-EOF + SELECT cn.id,visible,latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,tags + FROM way_nodes wn,current_nodes cn + WHERE wn.version=#{version} + AND wn.id=#{id} + AND wn.node_id=cn.id + ORDER BY sequence_id + EOF + rows=ActiveRecord::Base.connection.select_all(sql) + + # if historic (full revert), get the old version of each node + # - if it's in another way now, generate a new id + # - if it's not in another way, use the old ID + if historic then + rows.each_index do |i| + sql=<<-EOF + SELECT latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,tags,cwn.id AS currentway + FROM nodes n + LEFT JOIN current_way_nodes cwn + ON cwn.node_id=n.id + WHERE n.id=#{rows[i]['id']} + AND n.timestamp<="#{waytime}" + AND cwn.id!=#{id} + ORDER BY n.timestamp DESC + LIMIT 1 + EOF + row=ActiveRecord::Base.connection.select_one(sql) + unless row.nil? then + nx=row['longitude'].to_f + ny=row['latitude'].to_f + if (row['currentway'] && (nx!=rows[i]['longitude'].to_f or ny!=rows[i]['latitude'].to_f or row['tags']!=rows[i]['tags'])) then rows[i]['id']=-1 end + rows[i]['longitude']=nx + rows[i]['latitude' ]=ny + rows[i]['tags' ]=row['tags'] + end + end + end + rows + end -def deleteitemrelations(objid,type,uid,db_now) - sql=<<-EOF - SELECT cr.id FROM current_relation_members crm,current_relations cr - WHERE crm.member_id=#{objid} - AND crm.member_type='#{type}' - AND crm.id=cr.id - AND cr.visible=1 - EOF - - relways=ActiveRecord::Base.connection.select_all(sql) - relways.each do |a| - removefromrelation(objid,type,a['id'],uid,db_now) - end -end + def createuniquenodes(way,uqn_name,nodelist) + # Find nodes which appear in this way but no others + sql=<<-EOF + CREATE TEMPORARY TABLE #{uqn_name} + SELECT a.node_id + FROM (SELECT DISTINCT node_id FROM current_way_nodes + WHERE id=#{way}) a + LEFT JOIN current_way_nodes b + ON b.node_id=a.node_id + AND b.id!=#{way} + WHERE b.node_id IS NULL + EOF + unless nodelist.empty? then + sql+="AND a.node_id NOT IN ("+nodelist.join(',')+")" + end + ActiveRecord::Base.connection.execute(sql) + end -def removefromrelation(objid,type,relation,uid,db_now) - rver=ActiveRecord::Base.connection.insert("INSERT INTO relations (id,user_id,timestamp,visible) VALUES (#{relation},#{uid},#{db_now},1)") - - tagsql=<<-EOF - INSERT INTO relation_tags (id,k,v,version) - SELECT id,k,v,#{rver} FROM current_relation_tags - WHERE id=#{relation} - EOF - ActiveRecord::Base.connection.insert(tagsql) - - membersql=<<-EOF - INSERT INTO relation_members (id,member_type,member_id,member_role,version) - SELECT id,member_type,member_id,member_role,#{rver} FROM current_relation_members - WHERE id=#{relation} - AND (member_id!=#{objid} OR member_type!='#{type}') - EOF - ActiveRecord::Base.connection.insert(membersql) - - ActiveRecord::Base.connection.update("UPDATE current_relations SET user_id=#{uid},timestamp=#{db_now} WHERE id=#{relation}") - ActiveRecord::Base.connection.execute("DELETE FROM current_relation_members WHERE id=#{relation} AND member_type='#{type}' AND member_id=#{objid}") -end -def sqlescape(a) - a.gsub(/[\000-\037]/,"").gsub("'","''").gsub(92.chr,92.chr+92.chr) -end + # ==================================================================== + # Relations handling + # deleteuniquenoderelations(uqn_name,uid,db_now) + # deleteitemrelations(way|node,'way'|'node',uid,db_now) -def tag2array(a) - tags={} - a.gsub(';;;','#%').split(';').each do |b| - b.gsub!('#%',';;;') - b.gsub!('===','#%') - k,v=b.split('=') - if k.nil? then k='' end - if v.nil? then v='' end - tags[k.gsub('#%','=').gsub(':','|')]=v.gsub('#%','=') - end - tags -end + def deleteuniquenoderelations(uqn_name,uid,db_now) + sql=<<-EOF + SELECT node_id,cr.id FROM #{uqn_name},current_relation_members crm,current_relations cr + WHERE crm.member_id=node_id + AND crm.member_type='node' + AND crm.id=cr.id + AND cr.visible=1 + EOF + + relnodes=ActiveRecord::Base.connection.select_all(sql) + relnodes.each do |a| + removefromrelation(a['node_id'],'node',a['id'],uid,db_now) + end + end -def array2tag(a) - str='' - a.each do |k,v| - if v=='' then next end - if v[0,6]=='(type ' then next end - if str!='' then str+=';' end - str+=k.gsub(';',';;;').gsub('=','===').gsub('|',':')+'='+v.gsub(';',';;;').gsub('=','===') + def deleteitemrelations(objid,type,uid,db_now) + sql=<<-EOF + SELECT cr.id FROM current_relation_members crm,current_relations cr + WHERE crm.member_id=#{objid} + AND crm.member_type='#{type}' + AND crm.id=cr.id + AND cr.visible=1 + EOF + + relways=ActiveRecord::Base.connection.select_all(sql) + relways.each do |a| + removefromrelation(objid,type,a['id'],uid,db_now) + end end - str -end -def getuserid(token) - if (token =~ /^(.+)\+(.+)$/) then - user = User.authenticate(:username => $1, :password => $2) - else - user = User.authenticate(:token => token) + def removefromrelation(objid,type,relation,uid,db_now) + rver=ActiveRecord::Base.connection.insert("INSERT INTO relations (id,user_id,timestamp,visible) VALUES (#{relation},#{uid},#{db_now},1)") + + tagsql=<<-EOF + INSERT INTO relation_tags (id,k,v,version) + SELECT id,k,v,#{rver} FROM current_relation_tags + WHERE id=#{relation} + EOF + ActiveRecord::Base.connection.insert(tagsql) + + membersql=<<-EOF + INSERT INTO relation_members (id,member_type,member_id,member_role,version) + SELECT id,member_type,member_id,member_role,#{rver} FROM current_relation_members + WHERE id=#{relation} + AND (member_id!=#{objid} OR member_type!='#{type}') + EOF + ActiveRecord::Base.connection.insert(membersql) + + ActiveRecord::Base.connection.update("UPDATE current_relations SET user_id=#{uid},timestamp=#{db_now} WHERE id=#{relation}") + ActiveRecord::Base.connection.execute("DELETE FROM current_relation_members WHERE id=#{relation} AND member_type='#{type}' AND member_id=#{objid}") end - return user ? user.id : nil; -end + def sqlescape(a) + a.gsub(/[\000-\037]/,"").gsub("'","''").gsub(92.chr) {92.chr+92.chr} + end + def tag2array(a) + tags={} + Tags.split(a) do |k, v| + tags[k.gsub(':','|')]=v + end + tags + end + def array2tag(a) + tags = [] + a.each do |k,v| + if v=='' then next end + if v[0,6]=='(type ' then next end + tags << [k.gsub('|',':'), v] + end + return Tags.join(tags) + end -# ==================================================================== -# AMF read subroutines + def getuserid(token) + if (token =~ /^(.+)\+(.+)$/) then + user = User.authenticate(:username => $1, :password => $2) + else + user = User.authenticate(:token => token) + end -# ----- getint return two-byte integer -# ----- getlong return four-byte long -# ----- getstring return string with two-byte length -# ----- getdouble return eight-byte double-precision float -# ----- getobject return object/hash -# ----- getarray return numeric array + return user ? user.id : nil; + end -def getint(s) - s.getc*256+s.getc -end -def getlong(s) - ((s.getc*256+s.getc)*256+s.getc)*256+s.getc -end -def getstring(s) - len=s.getc*256+s.getc - s.read(len) -end + # ==================================================================== + # AMF read subroutines -def getdouble(s) - a=s.read(8).unpack('G') # G big-endian, E little-endian - a[0] -end + # ----- getint return two-byte integer + # ----- getlong return four-byte long + # ----- getstring return string with two-byte length + # ----- getdouble return eight-byte double-precision float + # ----- getobject return object/hash + # ----- getarray return numeric array -def getarray(s) - len=getlong(s) - arr=[] - for i in (0..len-1) - arr[i]=getvalue(s) + def getint(s) + s.getc*256+s.getc end - arr -end -def getobject(s) - arr={} - while (key=getstring(s)) - if (key=='') then break end - arr[key]=getvalue(s) + def getlong(s) + ((s.getc*256+s.getc)*256+s.getc)*256+s.getc end - s.getc # skip the 9 'end of object' value - arr -end -# ----- getvalue parse and get value - -def getvalue(s) - case s.getc - when 0; return getdouble(s) # number - when 1; return s.getc # boolean - when 2; return getstring(s) # string - when 3; return getobject(s) # object/hash - when 5; return nil # null - when 6; return nil # undefined - when 8; s.read(4) # mixedArray - return getobject(s) # | - when 10;return getarray(s) # array - else; return nil # error + def getstring(s) + len=s.getc*256+s.getc + s.read(len) end -end -# ==================================================================== -# AMF write subroutines + def getdouble(s) + a=s.read(8).unpack('G') # G big-endian, E little-endian + a[0] + end -# ----- putdata envelope data into AMF writeable form -# ----- encodevalue pack variables as AMF + def getarray(s) + len=getlong(s) + arr=[] + for i in (0..len-1) + arr[i]=getvalue(s) + end + arr + end -def putdata(index,n) - d =encodestring(index+"/onResult") - d+=encodestring("null") - d+=[-1].pack("N") - d+=encodevalue(n) -end + def getobject(s) + arr={} + while (key=getstring(s)) + if (key=='') then break end + arr[key]=getvalue(s) + end + s.getc # skip the 9 'end of object' value + arr + end -def encodevalue(n) - case n.class.to_s - when 'Array' - a=10.chr+encodelong(n.length) - n.each do |b| - a+=encodevalue(b) + # ----- getvalue parse and get value + + def getvalue(s) + case s.getc + when 0; return getdouble(s) # number + when 1; return s.getc # boolean + when 2; return getstring(s) # string + when 3; return getobject(s) # object/hash + when 5; return nil # null + when 6; return nil # undefined + when 8; s.read(4) # mixedArray + return getobject(s) # | + when 10;return getarray(s) # array + else; return nil # error end - a - when 'Hash' - a=3.chr - n.each do |k,v| - a+=encodestring(k)+encodevalue(v) + end + + # ==================================================================== + # AMF write subroutines + + # ----- putdata envelope data into AMF writeable form + # ----- encodevalue pack variables as AMF + + def putdata(index,n) + d =encodestring(index+"/onResult") + d+=encodestring("null") + d+=[-1].pack("N") + d+=encodevalue(n) + end + + def encodevalue(n) + case n.class.to_s + when 'Array' + a=10.chr+encodelong(n.length) + n.each do |b| + a+=encodevalue(b) + end + a + when 'Hash' + a=3.chr + n.each do |k,v| + a+=encodestring(k)+encodevalue(v) + end + a+0.chr+0.chr+9.chr + when 'String' + 2.chr+encodestring(n) + when 'Bignum','Fixnum','Float' + 0.chr+encodedouble(n) + when 'NilClass' + 5.chr + else + RAILS_DEFAULT_LOGGER.error("Unexpected Ruby type for AMF conversion: "+n.class.to_s) end - a+0.chr+0.chr+9.chr - when 'String' - 2.chr+encodestring(n) - when 'Bignum','Fixnum','Float' - 0.chr+encodedouble(n) - when 'NilClass' - 5.chr - else - RAILS_DEFAULT_LOGGER.error("Unexpected Ruby type for AMF conversion: "+n.class.to_s) end -end -# ----- encodestring encode string with two-byte length -# ----- encodedouble encode number as eight-byte double precision float -# ----- encodelong encode number as four-byte long + # ----- encodestring encode string with two-byte length + # ----- encodedouble encode number as eight-byte double precision float + # ----- encodelong encode number as four-byte long -def encodestring(n) - a,b=n.size.divmod(256) - a.chr+b.chr+n -end + def encodestring(n) + a,b=n.size.divmod(256) + a.chr+b.chr+n + end -def encodedouble(n) - [n].pack('G') -end + def encodedouble(n) + [n].pack('G') + end -def encodelong(n) - [n].pack('N') -end + def encodelong(n) + [n].pack('N') + end -# ==================================================================== -# Co-ordinate conversion + # ==================================================================== + # Co-ordinate conversion -def lat2coord(a,basey,masterscale) - -(lat2y(a)-basey)*masterscale+250 -end + def lat2coord(a,basey,masterscale) + -(lat2y(a)-basey)*masterscale+250 + end -def long2coord(a,baselong,masterscale) - (a-baselong)*masterscale+350 -end + def long2coord(a,baselong,masterscale) + (a-baselong)*masterscale+350 + end -def lat2y(a) - 180/Math::PI * Math.log(Math.tan(Math::PI/4+a*(Math::PI/180)/2)) -end + def lat2y(a) + 180/Math::PI * Math.log(Math.tan(Math::PI/4+a*(Math::PI/180)/2)) + end -def coord2lat(a,masterscale,basey) - y2lat((a-250)/-masterscale+basey) -end + def coord2lat(a,masterscale,basey) + y2lat((a-250)/-masterscale+basey) + end -def coord2long(a,masterscale,baselong) - (a-350)/masterscale+baselong -end + def coord2long(a,masterscale,baselong) + (a-350)/masterscale+baselong + end -def y2lat(a) - 180/Math::PI * (2*Math.atan(Math.exp(a*Math::PI/180))-Math::PI/2) -end + def y2lat(a) + 180/Math::PI * (2*Math.atan(Math.exp(a*Math::PI/180))-Math::PI/2) + end end