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@ -1,4 +1,6 @@ |
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var indeces = require('../query/indeces'); |
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var isObject = require('is-object'), |
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indeces = require('../query/indeces'); |
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// validate inputs, convert types and apply defaults
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// validate inputs, convert types and apply defaults
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function sanitize( req ){ |
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function sanitize( req ){ |
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@ -7,50 +9,56 @@ function sanitize( req ){ |
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var params= req.query; |
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var params= req.query; |
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// ensure the input params are a valid object
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// ensure the input params are a valid object
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if( Object.prototype.toString.call( params ) !== '[object Object]' ){ |
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if( !isObject( params ) ){ |
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params = {}; |
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params = {}; |
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} |
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} |
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// which layers to query
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// default case (no layers specified in GET params)
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if('string' === typeof params.layers && params.layers.length){ |
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if('string' !== typeof params.layers || !params.layers.length){ |
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// @note: 'address' alias disabled by default until feature testing completed
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var alias_layers = ['poi', 'admin']; |
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params.layers = 'poi,admin'; // default layers
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var alias_indeces = indeces.concat(alias_layers); |
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var layers = params.layers.split(',').map( function( layer ){ |
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return layer.toLowerCase(); // lowercase inputs
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}); |
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for( var x=0; x<layers.length; x++ ){ |
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if( -1 === alias_indeces.indexOf( layers[x] ) ){ |
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return { |
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'error': true, |
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'message': 'invalid param \'layer\': must be one or more of ' + alias_indeces.join(',')
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}; |
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} |
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} |
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var expand_aliases = function(alias, layers, layer_indeces) { |
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var alias_index = layers.indexOf(alias); |
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if (alias_index !== -1 ) { |
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layers.splice(alias_index, 1); |
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layers = layers.concat(layer_indeces); |
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} |
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return layers; |
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}; |
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layers = expand_aliases('poi', layers, ['geoname','osmnode','osmway']); |
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layers = expand_aliases('admin', layers, ['admin0','admin1','admin2','neighborhood']); |
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// de-dup
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layers = layers.filter(function(item, pos) { |
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return layers.indexOf(item) === pos; |
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}); |
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clean.layers = layers; |
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} |
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} |
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else { |
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clean.layers = indeces; // default (all layers)
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// decide which layers can be queried
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var alias_layers = ['poi', 'admin', 'address']; |
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var alias_indeces = indeces.concat(alias_layers); |
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// parse GET params
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var layers = params.layers.split(',').map( function( layer ){ |
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return layer.toLowerCase(); // lowercase inputs
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}); |
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// validate layer names
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for( var x=0; x<layers.length; x++ ){ |
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if( -1 === alias_indeces.indexOf( layers[x] ) ){ |
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return { |
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'error': true, |
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'message': 'invalid param \'layer\': must be one or more of ' + alias_indeces.join(',') |
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}; |
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} |
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} |
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} |
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// expand aliases
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var expand_aliases = function(alias, layers, layer_indeces) { |
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var alias_index = layers.indexOf(alias); |
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if (alias_index !== -1 ) { |
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layers.splice(alias_index, 1); |
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layers = layers.concat(layer_indeces); |
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} |
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return layers; |
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}; |
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layers = expand_aliases('poi', layers, ['geoname','osmnode','osmway']); |
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layers = expand_aliases('admin', layers, ['admin0','admin1','admin2','neighborhood']); |
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layers = expand_aliases('address', layers, ['openaddresses']); |
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// de-dupe
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layers = layers.filter(function(item, pos) { |
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return layers.indexOf(item) === pos; |
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}); |
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// pass validated params to next middleware
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clean.layers = layers; |
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req.clean = clean; |
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req.clean = clean; |
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return { 'error': false }; |
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return { 'error': false }; |
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