src/c-apps/osrf_dbmath.c

   1 #include "opensrf/osrf_app_session.h"
   2 #include "opensrf/osrf_application.h"
   3 #include "objson/object.h"
   4 #include "opensrf/osrf_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",
  20                         "[ num1, num2 ]", 2, 0 );
  21
  22         osrfAppRegisterMethod(
  23                         MODULENAME,
  24                         "sub",
  25                         "osrfMathRun",
  26                         "Subtracts two numbers",
  27                         "[ num1, num2 ]", 2, 0 );
  28
  29         osrfAppRegisterMethod(
  30                         MODULENAME,
  31                         "mult",
  32                         "osrfMathRun",
  33                         "Multiplies two numbers",
  34                         "[ num1, num2 ]", 2, 0 );
  35
  36         osrfAppRegisterMethod(
  37                         MODULENAME,
  38                         "div",
  39                         "osrfMathRun",
  40                         "Divides two numbers",
  41                         "[ num1, num2 ]", 2, 0 );
  42
  43         return 0;
  44 }
  45
  46 int osrfAppChildInit() {
  47         return 0;
  48 }
  49
  50 int osrfMathRun( osrfMethodContext* ctx ) {
  51
  52         OSRF_METHOD_VERIFY_CONTEXT(ctx);
  53
  54         jsonObject* x = jsonObjectGetIndex(ctx->params, 0);
  55         jsonObject* y = jsonObjectGetIndex(ctx->params, 1);
  56
  57         if( x && y ) {
  58
  59                 char* a = jsonObjectToSimpleString(x);
  60                 char* b = jsonObjectToSimpleString(y);
  61
  62                 if( a && b ) {
  63
  64                         double i = strtod(a, NULL);
  65                         double j = strtod(b, NULL);
  66                         double r = 0;
  67
  68                         if(!strcmp(ctx->method->name, "add"))   r = i + j;
  69                         if(!strcmp(ctx->method->name, "sub"))   r = i - j;
  70                         if(!strcmp(ctx->method->name, "mult"))  r = i * j;
  71                         if(!strcmp(ctx->method->name, "div"))   r = i / j;
  72
  73                         jsonObject* resp = jsonNewNumberObject(r);
  74                         osrfAppRespondComplete( ctx, resp );
  75                         jsonObjectFree(resp);
  76
  77                         free(a); free(b);
  78                         return 0;
  79                 }
  80         }
  81
  82         return -1;
  83 }
  84
  85
  86