/* existdir.cpp by K. Tsuru*/
/************************************
It returns whether the directory exist or not.
*************************************/
#ifndef SN_H
#include "sn.h"
#endif

static const char* const testFile ="$$$.$$$";

bool ExistDirectory(const char* const dir){
    FILE* fp;
    char fname[SNC_MAX_PATH];
    bool create = true;

    strcpy(fname, dir);
    char* lc = LastChar(fname);
    if(*lc != DIR_SEPARATOR){   // no separator of directory
        *(lc+1) = DIR_SEPARATOR;        *(lc+2) = '\0';
    }
    strcat(fname, testFile);

    fp = fopen(fname, "r"); // try to read
    if(fp == NULL) fp = fopen(fname, "w");// create 
    else create = false;

    if(fp != NULL){
        fclose(fp);     if(create) remove(fname);   return true;
    }
    return false;
}