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Diffstat (limited to 'misc/openlayers/lib/OpenLayers/Format/OSM.js')
| -rw-r--r-- | misc/openlayers/lib/OpenLayers/Format/OSM.js | 465 |
1 files changed, 0 insertions, 465 deletions
diff --git a/misc/openlayers/lib/OpenLayers/Format/OSM.js b/misc/openlayers/lib/OpenLayers/Format/OSM.js deleted file mode 100644 index 7283348..0000000 --- a/misc/openlayers/lib/OpenLayers/Format/OSM.js +++ /dev/null @@ -1,465 +0,0 @@ -/* Copyright (c) 2006-2013 by OpenLayers Contributors (see authors.txt for - * full list of contributors). Published under the 2-clause BSD license. - * See license.txt in the OpenLayers distribution or repository for the - * full text of the license. */ - -/** - * @requires OpenLayers/Format/XML.js - * @requires OpenLayers/Feature/Vector.js - * @requires OpenLayers/Geometry/Point.js - * @requires OpenLayers/Geometry/LineString.js - * @requires OpenLayers/Geometry/Polygon.js - * @requires OpenLayers/Projection.js - */ - -/** - * Class: OpenLayers.Format.OSM - * OSM parser. Create a new instance with the - * <OpenLayers.Format.OSM> constructor. - * - * Inherits from: - * - <OpenLayers.Format.XML> - */ -OpenLayers.Format.OSM = OpenLayers.Class(OpenLayers.Format.XML, { - - /** - * APIProperty: checkTags - * {Boolean} Should tags be checked to determine whether something - * should be treated as a seperate node. Will slow down parsing. - * Default is false. - */ - checkTags: false, - - /** - * Property: interestingTagsExclude - * {Array} List of tags to exclude from 'interesting' checks on nodes. - * Must be set when creating the format. Will only be used if checkTags - * is set. - */ - interestingTagsExclude: null, - - /** - * APIProperty: areaTags - * {Array} List of tags indicating that something is an area. - * Must be set when creating the format. Will only be used if - * checkTags is true. - */ - areaTags: null, - - /** - * Constructor: OpenLayers.Format.OSM - * Create a new parser for OSM. - * - * Parameters: - * options - {Object} An optional object whose properties will be set on - * this instance. - */ - initialize: function(options) { - var layer_defaults = { - 'interestingTagsExclude': ['source', 'source_ref', - 'source:ref', 'history', 'attribution', 'created_by'], - 'areaTags': ['area', 'building', 'leisure', 'tourism', 'ruins', - 'historic', 'landuse', 'military', 'natural', 'sport'] - }; - - layer_defaults = OpenLayers.Util.extend(layer_defaults, options); - - var interesting = {}; - for (var i = 0; i < layer_defaults.interestingTagsExclude.length; i++) { - interesting[layer_defaults.interestingTagsExclude[i]] = true; - } - layer_defaults.interestingTagsExclude = interesting; - - var area = {}; - for (var i = 0; i < layer_defaults.areaTags.length; i++) { - area[layer_defaults.areaTags[i]] = true; - } - layer_defaults.areaTags = area; - - // OSM coordinates are always in longlat WGS84 - this.externalProjection = new OpenLayers.Projection("EPSG:4326"); - - OpenLayers.Format.XML.prototype.initialize.apply(this, [layer_defaults]); - }, - - /** - * APIMethod: read - * Return a list of features from a OSM doc - - * Parameters: - * doc - {Element} - * - * Returns: - * Array({<OpenLayers.Feature.Vector>}) - */ - read: function(doc) { - if (typeof doc == "string") { - doc = OpenLayers.Format.XML.prototype.read.apply(this, [doc]); - } - - var nodes = this.getNodes(doc); - var ways = this.getWays(doc); - - // Geoms will contain at least ways.length entries. - var feat_list = new Array(ways.length); - - for (var i = 0; i < ways.length; i++) { - // We know the minimal of this one ahead of time. (Could be -1 - // due to areas/polygons) - var point_list = new Array(ways[i].nodes.length); - - var poly = this.isWayArea(ways[i]) ? 1 : 0; - for (var j = 0; j < ways[i].nodes.length; j++) { - var node = nodes[ways[i].nodes[j]]; - - var point = new OpenLayers.Geometry.Point(node.lon, node.lat); - - // Since OSM is topological, we stash the node ID internally. - point.osm_id = parseInt(ways[i].nodes[j]); - point_list[j] = point; - - // We don't display nodes if they're used inside other - // elements. - node.used = true; - } - var geometry = null; - if (poly) { - geometry = new OpenLayers.Geometry.Polygon( - new OpenLayers.Geometry.LinearRing(point_list)); - } else { - geometry = new OpenLayers.Geometry.LineString(point_list); - } - if (this.internalProjection && this.externalProjection) { - geometry.transform(this.externalProjection, - this.internalProjection); - } - var feat = new OpenLayers.Feature.Vector(geometry, - ways[i].tags); - feat.osm_id = parseInt(ways[i].id); - feat.fid = "way." + feat.osm_id; - feat_list[i] = feat; - } - for (var node_id in nodes) { - var node = nodes[node_id]; - if (!node.used || this.checkTags) { - var tags = null; - - if (this.checkTags) { - var result = this.getTags(node.node, true); - if (node.used && !result[1]) { - continue; - } - tags = result[0]; - } else { - tags = this.getTags(node.node); - } - - var feat = new OpenLayers.Feature.Vector( - new OpenLayers.Geometry.Point(node['lon'], node['lat']), - tags); - if (this.internalProjection && this.externalProjection) { - feat.geometry.transform(this.externalProjection, - this.internalProjection); - } - feat.osm_id = parseInt(node_id); - feat.fid = "node." + feat.osm_id; - feat_list.push(feat); - } - // Memory cleanup - node.node = null; - } - return feat_list; - }, - - /** - * Method: getNodes - * Return the node items from a doc. - * - * Parameters: - * doc - {DOMElement} node to parse tags from - */ - getNodes: function(doc) { - var node_list = doc.getElementsByTagName("node"); - var nodes = {}; - for (var i = 0; i < node_list.length; i++) { - var node = node_list[i]; - var id = node.getAttribute("id"); - nodes[id] = { - 'lat': node.getAttribute("lat"), - 'lon': node.getAttribute("lon"), - 'node': node - }; - } - return nodes; - }, - - /** - * Method: getWays - * Return the way items from a doc. - * - * Parameters: - * doc - {DOMElement} node to parse tags from - */ - getWays: function(doc) { - var way_list = doc.getElementsByTagName("way"); - var return_ways = []; - for (var i = 0; i < way_list.length; i++) { - var way = way_list[i]; - var way_object = { - id: way.getAttribute("id") - }; - - way_object.tags = this.getTags(way); - - var node_list = way.getElementsByTagName("nd"); - - way_object.nodes = new Array(node_list.length); - - for (var j = 0; j < node_list.length; j++) { - way_object.nodes[j] = node_list[j].getAttribute("ref"); - } - return_ways.push(way_object); - } - return return_ways; - - }, - - /** - * Method: getTags - * Return the tags list attached to a specific DOM element. - * - * Parameters: - * dom_node - {DOMElement} node to parse tags from - * interesting_tags - {Boolean} whether the return from this function should - * return a boolean indicating that it has 'interesting tags' -- - * tags like attribution and source are ignored. (To change the list - * of tags, see interestingTagsExclude) - * - * Returns: - * tags - {Object} hash of tags - * interesting - {Boolean} if interesting_tags is passed, returns - * whether there are any interesting tags on this element. - */ - getTags: function(dom_node, interesting_tags) { - var tag_list = dom_node.getElementsByTagName("tag"); - var tags = {}; - var interesting = false; - for (var j = 0; j < tag_list.length; j++) { - var key = tag_list[j].getAttribute("k"); - tags[key] = tag_list[j].getAttribute("v"); - if (interesting_tags) { - if (!this.interestingTagsExclude[key]) { - interesting = true; - } - } - } - return interesting_tags ? [tags, interesting] : tags; - }, - - /** - * Method: isWayArea - * Given a way object from getWays, check whether the tags and geometry - * indicate something is an area. - * - * Returns: - * {Boolean} - */ - isWayArea: function(way) { - var poly_shaped = false; - var poly_tags = false; - - if (way.nodes[0] == way.nodes[way.nodes.length - 1]) { - poly_shaped = true; - } - if (this.checkTags) { - for(var key in way.tags) { - if (this.areaTags[key]) { - poly_tags = true; - break; - } - } - } - return poly_shaped && (this.checkTags ? poly_tags : true); - }, - - /** - * APIMethod: write - * Takes a list of features, returns a serialized OSM format file for use - * in tools like JOSM. - * - * Parameters: - * features - {Array(<OpenLayers.Feature.Vector>)} - */ - write: function(features) { - if (!(OpenLayers.Util.isArray(features))) { - features = [features]; - } - - this.osm_id = 1; - this.created_nodes = {}; - var root_node = this.createElementNS(null, "osm"); - root_node.setAttribute("version", "0.5"); - root_node.setAttribute("generator", "OpenLayers "+ OpenLayers.VERSION_NUMBER); - - // Loop backwards, because the deserializer puts nodes last, and - // we want them first if possible - for(var i = features.length - 1; i >= 0; i--) { - var nodes = this.createFeatureNodes(features[i]); - for (var j = 0; j < nodes.length; j++) { - root_node.appendChild(nodes[j]); - } - } - return OpenLayers.Format.XML.prototype.write.apply(this, [root_node]); - }, - - /** - * Method: createFeatureNodes - * Takes a feature, returns a list of nodes from size 0->n. - * Will include all pieces of the serialization that are required which - * have not already been created. Calls out to createXML based on geometry - * type. - * - * Parameters: - * feature - {<OpenLayers.Feature.Vector>} - */ - createFeatureNodes: function(feature) { - var nodes = []; - var className = feature.geometry.CLASS_NAME; - var type = className.substring(className.lastIndexOf(".") + 1); - type = type.toLowerCase(); - var builder = this.createXML[type]; - if (builder) { - nodes = builder.apply(this, [feature]); - } - return nodes; - }, - - /** - * Method: createXML - * Takes a feature, returns a list of nodes from size 0->n. - * Will include all pieces of the serialization that are required which - * have not already been created. - * - * Parameters: - * feature - {<OpenLayers.Feature.Vector>} - */ - createXML: { - 'point': function(point) { - var id = null; - var geometry = point.geometry ? point.geometry : point; - - if (this.internalProjection && this.externalProjection) { - geometry = geometry.clone(); - geometry.transform(this.internalProjection, - this.externalProjection); - } - - var already_exists = false; // We don't return anything if the node - // has already been created - if (point.osm_id) { - id = point.osm_id; - if (this.created_nodes[id]) { - already_exists = true; - } - } else { - id = -this.osm_id; - this.osm_id++; - } - if (already_exists) { - node = this.created_nodes[id]; - } else { - var node = this.createElementNS(null, "node"); - } - this.created_nodes[id] = node; - node.setAttribute("id", id); - node.setAttribute("lon", geometry.x); - node.setAttribute("lat", geometry.y); - if (point.attributes) { - this.serializeTags(point, node); - } - this.setState(point, node); - return already_exists ? [] : [node]; - }, - linestring: function(feature) { - var id; - var nodes = []; - var geometry = feature.geometry; - if (feature.osm_id) { - id = feature.osm_id; - } else { - id = -this.osm_id; - this.osm_id++; - } - var way = this.createElementNS(null, "way"); - way.setAttribute("id", id); - for (var i = 0; i < geometry.components.length; i++) { - var node = this.createXML['point'].apply(this, [geometry.components[i]]); - if (node.length) { - node = node[0]; - var node_ref = node.getAttribute("id"); - nodes.push(node); - } else { - node_ref = geometry.components[i].osm_id; - node = this.created_nodes[node_ref]; - } - this.setState(feature, node); - var nd_dom = this.createElementNS(null, "nd"); - nd_dom.setAttribute("ref", node_ref); - way.appendChild(nd_dom); - } - this.serializeTags(feature, way); - nodes.push(way); - - return nodes; - }, - polygon: function(feature) { - var attrs = OpenLayers.Util.extend({'area':'yes'}, feature.attributes); - var feat = new OpenLayers.Feature.Vector(feature.geometry.components[0], attrs); - feat.osm_id = feature.osm_id; - return this.createXML['linestring'].apply(this, [feat]); - } - }, - - /** - * Method: serializeTags - * Given a feature, serialize the attributes onto the given node. - * - * Parameters: - * feature - {<OpenLayers.Feature.Vector>} - * node - {DOMNode} - */ - serializeTags: function(feature, node) { - for (var key in feature.attributes) { - var tag = this.createElementNS(null, "tag"); - tag.setAttribute("k", key); - tag.setAttribute("v", feature.attributes[key]); - node.appendChild(tag); - } - }, - - /** - * Method: setState - * OpenStreetMap has a convention that 'state' is stored for modification or deletion. - * This allows the file to be uploaded via JOSM or the bulk uploader tool. - * - * Parameters: - * feature - {<OpenLayers.Feature.Vector>} - * node - {DOMNode} - */ - setState: function(feature, node) { - if (feature.state) { - var state = null; - switch(feature.state) { - case OpenLayers.State.UPDATE: - state = "modify"; - case OpenLayers.State.DELETE: - state = "delete"; - } - if (state) { - node.setAttribute("action", state); - } - } - }, - - CLASS_NAME: "OpenLayers.Format.OSM" -}); |