56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
#include "dataset_deliverer.h"
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#include "basiccurl.h"
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#include <sstream>
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osm_dataset * dataset_deliverer::dataset=NULL;
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std::string dataset_deliverer::last_bbox = "";
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std::string dataset_deliverer::last_filename = "";
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osm_dataset* dataset_deliverer::load_from_file(const string& file,
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const string& parser)
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{
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// Only actually load from file if we haven't done so already
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if(dataset == NULL)
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{
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dataset = new osm_dataset;
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if(dataset->load(file.c_str(),parser)==false)
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return NULL;
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atexit(dataset_deliverer::release);
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last_filename = file;
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}
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else if(file != last_filename)
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{
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dataset = new osm_dataset;
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if(dataset->load(file.c_str(),parser)==false)
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return NULL;
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last_filename = file;
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}
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return dataset;
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}
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osm_dataset* dataset_deliverer::load_from_url
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(const string& url,const string& bbox,const string& parser)
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{
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if(dataset==NULL)
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{
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dataset = new osm_dataset;
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if(dataset->load_from_url(url.c_str(),bbox,parser)==false)
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return NULL;
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atexit(dataset_deliverer::release);
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last_bbox = bbox;
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}
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else if (bbox != last_bbox)
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{
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#ifdef MAPNIK_DEBUG
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cerr<<"BBOXES ARE DIFFERENT: " << last_bbox<<","<<bbox<<endl;
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#endif
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// Reload the dataset
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dataset->clear();
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if(dataset->load_from_url(url.c_str(),bbox,parser)==false)
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return NULL;
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last_bbox = bbox;
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}
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return dataset;
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}
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