OpenSRF/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         osrfLogInit(MODULENAME);
  16
  17         osrfAppRegisterMethod(
  18                         MODULENAME,
  19                         "add",
  20                         "osrfMathRun",
  21                         "Addss two numbers",
  22                         "[ num1, num2 ]", 2 );
  23
  24         osrfAppRegisterMethod(
  25                         MODULENAME,
  26                         "sub",
  27                         "osrfMathRun",
  28                         "Subtracts two numbers",
  29                         "[ num1, num2 ]", 2 );
  30
  31         osrfAppRegisterMethod(
  32                         MODULENAME,
  33                         "mult",
  34                         "osrfMathRun",
  35                         "Multiplies two numbers",
  36                         "[ num1, num2 ]", 2 );
  37
  38         osrfAppRegisterMethod(
  39                         MODULENAME,
  40                         "div",
  41                         "osrfMathRun",
  42                         "Divides two numbers",
  43                         "[ num1, num2 ]", 2 );
  44
  45         return 0;
  46 }
  47
  48 int osrfAppChildInit() {
  49         return 0;
  50 }
  51
  52 int osrfMathRun( osrfMethodContext* ctx ) {
  53
  54         OSRF_METHOD_VERIFY_CONTEXT(ctx);
  55
  56         jsonObject* x = jsonObjectGetIndex(ctx->params, 0);
  57         jsonObject* y = jsonObjectGetIndex(ctx->params, 1);
  58
  59         if( x && y ) {
  60
  61                 char* a = jsonObjectToSimpleString(x);
  62                 char* b = jsonObjectToSimpleString(y);
  63
  64                 if( a && b ) {
  65
  66                         double i = strtod(a, NULL);
  67                         double j = strtod(b, NULL);
  68                         double r = 0;
  69
  70                         if(!strcmp(ctx->method->name, "add"))   r = i + j;
  71                         if(!strcmp(ctx->method->name, "sub"))   r = i - j;
  72                         if(!strcmp(ctx->method->name, "mult"))  r = i * j;
  73                         if(!strcmp(ctx->method->name, "div"))   r = i / j;
  74
  75                         jsonObject* resp = jsonNewNumberObject(r);
  76                         osrfAppRequestRespondComplete( ctx->session, ctx->request, resp );
  77                         jsonObjectFree(resp);
  78
  79                         free(a); free(b);
  80                         return 0;
  81                 }
  82         }
  83
  84         return -1;
  85 }
  86
  87
  88