src/c-apps/osrf_dbmath.c

   1 #include <opensrf/osrf_app_session.h>
   2 #include <opensrf/osrf_application.h>
   3 #include <opensrf/osrf_json.h>
   4 #include <opensrf/log.h>
   5
   6 #define MODULENAME "opensrf.dbmath"
   7
   8 int osrfAppInitialize();
   9 int osrfAppChildInit();
  10 int osrfMathRun( osrfMethodContext* );
  11
  12
  13 int osrfAppInitialize() {
  14
  15         osrfAppRegisterMethod(
  16                         MODULENAME,
  17                         "add",
  18                         "osrfMathRun",
  19                         "Addss two numbers", 2, 0 );
  20
  21         osrfAppRegisterMethod(
  22                         MODULENAME,
  23                         "sub",
  24                         "osrfMathRun",
  25                         "Subtracts two numbers", 2, 0 );
  26
  27         osrfAppRegisterMethod(
  28                         MODULENAME,
  29                         "mult",
  30                         "osrfMathRun",
  31                         "Multiplies two numbers", 2, 0 );
  32
  33         osrfAppRegisterMethod(
  34                         MODULENAME,
  35                         "div",
  36                         "osrfMathRun",
  37                         "Divides two numbers", 2, 0 );
  38
  39         return 0;
  40 }
  41
  42 int osrfAppChildInit() {
  43         return 0;
  44 }
  45
  46 int osrfMathRun( osrfMethodContext* ctx ) {
  47
  48         OSRF_METHOD_VERIFY_CONTEXT(ctx);
  49
  50         jsonObject* x = jsonObjectGetIndex(ctx->params, 0);
  51         jsonObject* y = jsonObjectGetIndex(ctx->params, 1);
  52
  53         if( x && y ) {
  54
  55                 char* a = jsonObjectToSimpleString(x);
  56                 char* b = jsonObjectToSimpleString(y);
  57
  58                 if( a && b ) {
  59
  60                         double i = strtod(a, NULL);
  61                         double j = strtod(b, NULL);
  62                         double r = 0;
  63
  64                         if(!strcmp(ctx->method->name, "add"))   r = i + j;
  65                         if(!strcmp(ctx->method->name, "sub"))   r = i - j;
  66                         if(!strcmp(ctx->method->name, "mult"))  r = i * j;
  67                         if(!strcmp(ctx->method->name, "div"))   r = i / j;
  68
  69                         jsonObject* resp = jsonNewNumberObject(r);
  70                         osrfAppRespondComplete( ctx, resp );
  71                         jsonObjectFree(resp);
  72
  73                         free(a); free(b);
  74                         return 0;
  75                 }
  76         }
  77
  78         return -1;
  79 }
  80
  81
  82