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#include "TrainInfo.h" |
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#include "string_nocase.h" |
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#include "Util.h" |
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#include "Exceptions.h" |
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#include "Logger.h" |
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#include "HttpClient.h" |
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#include <vector> |
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#include <sstream> |
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#include <stdexcept> |
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#include <expat.h> |
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using namespace std; |
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vector<TrainInfo> traininfoList; |
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TrainInfo tmpTrainInfo; |
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ostringstream buffer; |
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string ConvertUpdateInfo(char ch) |
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{ |
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string result; |
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switch ( ch) |
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{ |
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case '1': |
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result = "< 3 min"; |
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break; |
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case '2': |
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result = "3 - 10 min"; |
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break; |
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case '3': |
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result = "> 10 min"; |
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break; |
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case '4': |
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result = "No info"; |
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break; |
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default: |
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result = "Unknown"; |
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} |
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return result; |
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} |
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void startElement(void *userData, const char *el, const char **attr) |
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{ |
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buffer.str(""); //clear buffer |
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} |
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void endElement(void *userData, const char *el) |
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{ |
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string name(el); |
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if (name == "time") { |
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tmpTrainInfo.time = buffer.str(); |
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} else if (name == "updated") { |
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tmpTrainInfo.update = ConvertUpdateInfo( buffer.str().at(0) ); |
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} else if (name == "trainnumber") { |
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tmpTrainInfo.type = buffer.str(); |
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} else if (name == "destination") { |
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tmpTrainInfo.destination = buffer.str(); |
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} else if (name == "origin") { |
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tmpTrainInfo.origin = buffer.str(); |
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} else if (name == "location") { |
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tmpTrainInfo.current = buffer.str(); |
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} else if (name == "status") { |
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tmpTrainInfo.status = buffer.str(); |
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} else if (name == "note") { |
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tmpTrainInfo.note = buffer.str(); |
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} else if (name == "train") { |
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traininfoList.push_back(tmpTrainInfo); |
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} |
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} |
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void charData(void *userData, const XML_Char *s,int len) |
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{ |
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for (int i=0; i<len; i++) { |
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buffer << s[i] ; |
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} |
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} |
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vector<TrainInfo> GetTrainInfo(int stationID) |
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{ |
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traininfoList.clear(); |
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ostringstream url; |
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url << "http://app.t-hoerup.dk/TrainInfoService/DepartureServlet?format=xml&station=" << stationID; |
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XML_Parser parser = NULL; |
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try |
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{ |
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string trainXml = HttpClient::GetString( url.str() ); |
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parser = XML_ParserCreate( NULL ); |
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XML_SetElementHandler(parser, startElement, endElement); |
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XML_SetCharacterDataHandler(parser, charData); |
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int done; |
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XML_Parse(parser, trainXml.c_str(), trainXml.size(), done); |
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} |
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catch (exception &e) |
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{ |
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Logger::logMessage( e.what() ); |
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} |
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catch (... ) |
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{ |
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Logger::logMessage( "unknown error in GetTrainInfo(int stationID)" ); |
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} |
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if (parser != NULL) |
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XML_ParserFree(parser); |
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return traininfoList; |
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} |
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/* |
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//old html screen scaper bit |
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vector<TrainInfo> GetTrainInfo(string stationcode, string stationname) |
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{ |
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vector<TrainInfo> result; |
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string url = string("http://www.bane.dk/visStation.asp?W=FJRN&S=") + stationcode + "&artikelId=4275&statnavn=" + stationname; |
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//string raw_doc = Util::readUrl(url, "/tmp/sms_tog.tmp" ); |
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string raw_doc; |
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try |
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{ |
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raw_doc = HttpClient::GetString(url); |
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} |
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catch (httpexception& e) |
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{ |
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Logger::logMessage(e.what()); |
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} |
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if (raw_doc == "") |
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{ |
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throw std::runtime_error("Connection timeout"); |
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} |
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raw_doc = Util::str_replace(raw_doc, "\"", "'"); |
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string_nocase html = raw_doc.c_str(); |
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unsigned int pos =0; |
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unsigned int ankomstpos = html.find("id='ankomsttabel'"); |
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while (1) |
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{ |
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//start with time |
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pos = html.find("<td class='tid'>", pos); |
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if (pos == string::npos) |
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break; |
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if (pos > ankomstpos) |
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break; |
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TrainInfo info; |
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pos = html.find("<span", pos); |
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int start = pos; |
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int stop = html.find("</td>", pos); |
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info.time = html.substr(start, stop-start).c_str(); |
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//update info |
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pos = html.find("<td class='opdater'>", pos); |
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pos += 54; |
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char update = html.at(pos); |
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info.update = ConvertUpdateInfo(update); |
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//type |
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pos = html.find( "<td class='togtype'>", pos); |
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start = pos + 20; |
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stop = html.find("</td>", pos); |
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info.type = html.substr(start, stop-start).c_str(); |
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//destination |
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pos = html.find( "<td class='til'>", pos); |
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start = pos + 16; |
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stop = html.find( "</td>", pos); |
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info.destination = html.substr(start, stop-start).c_str(); |
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//origin |
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pos = html.find( "<td class='visikke'>", pos); |
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start = pos + 20; |
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stop = html.find( "</td>", pos); |
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info.origin = html.substr(start, stop-start).c_str(); |
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//Current location |
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pos++; //since origin and current use the same search pattern, we must increase the position |
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//so we don't get origin twice. |
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pos = html.find( "<td class='visikke'>", pos); |
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start = pos + 20; |
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stop = html.find( "</td>", pos); |
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info.current = html.substr(start, stop-start).c_str(); |
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//status |
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pos = html.find( "<td class='status'>", pos); |
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start = pos + 19; |
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stop = html.find( "</td>", pos); |
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info.status = html.substr(start, stop-start).c_str(); |
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//note |
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pos = html.find( "<td class='bem'>", pos); |
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start = pos + 16; |
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stop = html.find( "</td>", pos); |
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info.note = html.substr(start, stop-start).c_str(); |
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CleanTrainInfo(info); |
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result.push_back(info); |
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} |
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return result; |
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} |
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*/ |