The Ecere SDK - sdk/blob - samples/net/XMLSample/xmlSample.ec

   1 /********************************************************
   2    This sample demonstrates how to use the XMLParser
   3    class to parse an XML communication protocol and
   4    update model objects accordingly.
   5 ********************************************************/
   6
   7 import "XMLParser"
   8
   9 enum ObjectType
  10 {
  11    plane, truck, human
  12 };
  13
  14 class Track
  15 {
  16    String id;
  17    ObjectType type;
  18    String description;
  19    Vector3Df position;
  20    Degrees direction;
  21    float speed;
  22
  23    ~Track()
  24    {
  25       delete id;
  26       delete description;
  27    }
  28 }
  29
  30 List<Track> tracks { };
  31
  32 TrackXMLParser parser { };
  33
  34 class TrackingSocket : Socket
  35 {
  36    unsigned int OnReceive(unsigned char * buffer, unsigned int count)
  37    {
  38       parser.Parse(buffer, count);
  39
  40       // Update Things Here
  41       return count;
  42    }
  43 }
  44
  45 class TrackXMLParser : XMLParser
  46 {
  47    Track object;
  48
  49    void ProcessKeyword(char * word)
  50    {
  51       if(!strcmpi(keyWord, "object"))
  52       {
  53          char * id = null;
  54          ObjectType type = 0;
  55          char * desc = null;
  56          while(GetWord())
  57          {
  58             if(!strcmpi(word, "id"))        { GetWord(); id = CopyString(word); }
  59             else if(!strcmpi(word, "type")) { GetWord(); type = (ObjectType)atoi(word); }
  60             else if(!strcmpi(word, "desc")) { GetWord(); desc = CopyString(word); }
  61          }
  62          for(object : tracks)
  63          {
  64             if(!strcmp(object.id, id)) break;
  65          }
  66          if(object)
  67          {
  68             object.type = type;
  69             object.description = desc;
  70          }
  71          else
  72          {
  73             tracks.Add({ id = id, type = type, description = desc });
  74          }
  75          delete desc;
  76       }
  77       else if(!strcmpi(keyWord, "/object"))
  78       {
  79          object = null;
  80       }
  81       else if(!strcmpi(keyWord, "pos"))
  82       {
  83          Vector3Df position { };
  84          while(GetWord())
  85          {
  86             if(!strcmpi(word, "x"))          { GetWord(); position.x = atof(word); }
  87             else if(!strcmpi(word, "y"))     { GetWord(); position.y = atof(word); }
  88             else if(!strcmpi(word, "z"))     { GetWord(); position.z = atof(word); }
  89             else if(!strcmpi(word, "speed")) { GetWord(); object.speed = atof(word); }
  90             else if(!strcmpi(word, "dir"))   { GetWord(); object.direction = atof(word); }
  91          }
  92          object.position = position;
  93       }
  94    }
  95 };