table.h~

简单的基于文件的数据库小程序

#ifndef _TABLE_H_
#define _TABLE_H_

#include <vector.h>
#include <Tool.h>
using namespace std;
class table
{
private:
    void readAttrib()
    {
	checkFileExist(name);
	int fd=openFile(name);
	char* temp = getNextLine(fd);
	if(temp!=NULL)
	{
	StringToken token(temp,',');
	int pos=0;
	while(token.hasMore())
	{
	    key.push_back(token.next());
	    pos++;
	}
    }
	temp = getNextLine(fd);
	if(temp!=NULL)
	{
	StringToken token1(temp,',');
	int pos=0;
	while(token1.hasMore()) 
	{
	    attrib.push_back(token1.next());
	    pos++;
	}}
	temp = getNextLine(fd);
	while(temp!=NULL){
            if(strcmp(temp,"")!=0){
                content.push_back(temp);
                                 }            
            temp=getNextLine(fd);           
                     }
	closeFile(fd);
	//cout<<attrib[0]<<attrib[1]<<endl;
	//cout<<content[0]<<content[1]<<endl;

    }

public:
    QString name;
    vector<QString> key;
    vector<QString> attrib; 
    vector<char*> content;
    table(const char* x)
    {
	name = x;
	key = vector<QString>(0);
	attrib = vector<QString>(0);
	content = vector<char*>(0);
	readAttrib();
	
    }
    int getCols()
    {
	return attrib.size();
    }
    int getRows()
    {
	return content.size();
    }
    int isKey(QString x)
    {
	for(int i= 0;i<key.size();i++)
	{
	    if (x == key[i])
		return 1;
	}
    }
    
    char* getItem(int i,int j)
    {
	StringToken token(content[i],',');
	int pos=0;
	for(;pos<j && token.hasMore(); pos++) 
	    token.next();
	if(token.hasMore()) 
	    return token.next();
	else {
	    perror("读行错误！！！");
        return 0;
    }
    }
};

#endif