File: embeddedRCall.c

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#include <Rembedded.h>
#include "embeddedRCall.h"

int
eval_R_command(const char *funcName, int argc, char *argv[])
{
    SEXP e;
    SEXP arg;

    int i;
    int errorOccurred;
    init_R(argc, argv);

    PROTECT(arg = allocVector(INTSXP, 10));
    for(i = 0; i < LENGTH(arg); i++) INTEGER(arg)[i]  = i + 1;

    PROTECT(e = lang2(install(funcName), arg));

    /* Evaluate the call to the R function.
       Ignore the return value.
    */
    R_tryEval(e, R_GlobalEnv, &errorOccurred);

    Rf_endEmbeddedR(0);
    UNPROTECT(2);   
    return(0);
}

void
init_R(int argc, char **argv)
{
    int defaultArgc = 1;
    char *defaultArgv[] = {"Rtest"};

    if(argc == 0 || argv == NULL) {
	argc = defaultArgc;
	argv = defaultArgv;
    }
    Rf_initEmbeddedR(argc, argv);
}

void
end_R()
{
    Rf_endEmbeddedR(0);
}