main.cpp

#include <iostream>
#include "Interpreter.h"
#include "CatalogManager.h"
#include "RecordManager.h"
#include "IndexManager.h"
#include <fstream>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#include "API.h"



void init()//如果没有Indexs文件，则创建一个
{
    FILE *fp;
    fp = fopen("Indexs", "r");
    if (fp == NULL)
    {
        fp = fopen("Indexs", "w+");
        return;
    }
    fclose(fp);
}

void print()
{
    clock_t finish = clock();
    double duration = (double)(finish - start) / CLOCKS_PER_SEC;
    duration *= 1000;
    printf( "now time is %2.1f milliseconds\n", duration * 1000);
}

clock_t start;

int main(int argc,char * argv[])
{
    init();

    API api;
    CatalogManager cm;
    RecordManager rm;

    api.rm = &rm;
    api.cm = &cm;
    IndexManager im(&api);

    api.im = &im;
    rm.api = &api;

    start = 0;
    clock_t finish;

    cout<<"*******************Welcome to use our MiniSQL**********************"<<endl;
    cout<<"********* Author: Chen hy &Peng zy & Chen yl & Zhong fy  **********"<<endl;
    int fileRead = 1;
	string fileN = "";
    string fileName ="";

	cin >> fileName;
    ifstream file;
    Interpreter in(fileName);
    in.ap = &api;
    string s;
	string flag;
    int status = 0;
    while(1)
    {
        if(fileRead)
        {
            file.open(in.fileName.c_str());
            if(!file.is_open())
            {
                cout<<"Fail to open "<<in.fileName<<endl;
                fileRead = 0;
                continue;
            }
            while(getline(file,s,';'))
            {
                in.interpreter(s);
            }
            file.close();
            fileRead = 0;
            finish = clock();
            double duration = (double)(finish - start) / CLOCKS_PER_SEC;
            duration *= 1000;
            printf( "%2.1f milliseconds\n", duration );
        }
        else
        {

            cout<<"minisql>>";
            getline(cin,s,';');
            start = clock();
            status =  in.interpreter(s);
            if(status==2)
            {
                fileRead = 1;
            }
            else if(status==587)//出错？
            {
                break;
            }
            else{
                finish = clock();
                double duration = (double)(finish - start) / CLOCKS_PER_SEC;
                duration *= 1000;
                printf( "The duration is %2.1f milliseconds\n", duration);
            }
        }

    }

    return 0;
}