storage.cpp

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// Storage.cpp: implementation of the Storage class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "Storage.h"
#include "stdlib.h"
#include "iostream.h"
#include "string.h"
#include "fstream.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

int Storage::num=0;

Storage::Storage()
{
			
	fstream getnum("Num.txt",ios::in);
	if(getnum.fail())
	{
		cout<<"载入书本数量错误！";
		exit(0);
	}
	getnum>>num;
	getnum.close();
	BookData info={"","","","","",0,0,0};
	int temp=1;
	fstream istore("Bookstore.dat",ios::in|ios::nocreate|ios::binary);//从文件中读取书库信息
	if(istore.fail())
	{
		cout<<"载入书库数据错误！请检查书库数据文件！";
		exit(0);
	}
			istore.read((char*)&info,sizeof(info));
	while(temp<=num&&!istore.eof())
		{
			strcpy(book[temp].isbn,info.isbn);
			strcpy(book[temp].author,info.author);
			strcpy(book[temp].bookTitle,info.bookTitle);
			strcpy(book[temp].dateAdded,info.dateAdded);
			strcpy(book[temp].publisher,info.publisher);
			book[temp].qtyOnHand=info.qtyOnHand;
			book[temp].retail=info.retail;
			book[temp].wholesale=info.wholesale;
			istore.read((char*)&info,sizeof(info));
			temp++;		
		}
	
	while(temp<100)//不足一百本，余下的数据置空
	{
		strcpy(book[temp].author,"");
		strcpy(book[temp].bookTitle,"");
		strcpy(book[temp].dateAdded,"");
		strcpy(book[temp].isbn,"");
		strcpy(book[temp].publisher,"");
		book[temp].qtyOnHand=0;
		book[temp].retail=0;
		book[temp].wholesale=0;
		temp++;
	}
	for(int i=1;i<100;i++)
	{
		book[i].showed=0;
	}

	istore.close();
}


Storage::~Storage()
{
	BookData info={"","","","","",0,0,0};
	int temp=1;
	fstream ostore("Bookstore.dat",ios::out|ios::nocreate|ios::binary);
	if(ostore.fail())
	{
		cout<<"保存数据失败!"<<endl;
		exit(0);
	}
	
	while(temp<=num)
	{
		strcpy(info.isbn,book[temp].isbn);
		strcpy(info.author,book[temp].author);
		strcpy(info.bookTitle,book[temp].bookTitle);
		strcpy(info.dateAdded,book[temp].dateAdded);
		strcpy(info.publisher,book[temp].publisher);
		info.qtyOnHand=book[temp].qtyOnHand;
		info.retail=book[temp].retail;
		info.wholesale=book[temp].wholesale;
		ostore.write((char*)&info,sizeof(info));
		temp++;
	}
	fstream getnum("Num.txt",ios::out);
	if(getnum.fail())
	{
		cout<<"保存书本数量错误！";
		exit(0);
	}
	getnum<<num;
	getnum.close();
	cout<<"\n数据已保存"<<num<<endl;
	ostore.close();
}


bool Storage::isEmpty(int n)
{
	if(book[n].isbn[0]=='\0')
		return true;
	else 
		return false;
}

void Storage::removeBook(int n)
{
		strcpy(book[n].author,"");
		strcpy(book[n].bookTitle,"");
		strcpy(book[n].dateAdded,"");
		strcpy(book[n].isbn,"");
		strcpy(book[n].publisher,"");
		book[n].qtyOnHand=0;
		book[n].retail=0;
		book[n].wholesale=0;
}

void Storage::setDateAdded(char *date,int n)
{
	strcpy(book[n].dateAdded,date);
}

void Storage::setISBN(char *Isbn,int n)
{
	strcpy(book[n].isbn,Isbn);
}

void Storage::setPub(char *pub,int n)
{
	strcpy(book[n].publisher,pub);
}

void Storage::setQty(int num,int n)
{
book[n].qtyOnHand=num;
}

void Storage::setRetail(float price,int n)
{
	book[n].retail=price;
}

void Storage::setTitle(char *title,int n)
{
strcpy(book[n].bookTitle,title);
}

void Storage::setWholesale(float cost,int n)
{
	book[n].wholesale=cost;
}

void Storage::setAuthor(char *auth,int n)
{
	strcpy(book[n].author,auth);
}

void Storage::BookInfo(int n)
{
	cout<<"\n*****************************\n";
	cout<<"\n\t\tISBN  号:"<<book[n].isbn<<endl;
	cout<<"\t\t书    名:"<<book[n].bookTitle<<endl;
	cout<<"\t\t作    者:"<<book[n].author<<endl;
	cout<<"\t\t出 版 社:"<<book[n].publisher<<endl;
	cout<<"\t\t进书日期:"<<book[n].dateAdded<<endl;
	cout<<"\t\t库 存 量:"<<book[n].qtyOnHand<<endl;
	cout<<"\t\t批 发 价:"<<book[n].wholesale<<endl;
	cout<<"\t\t零 售 价:"<<book[n].retail<<endl;
}

void Storage::deleteBook(char *name)
{
	char ch;
	int n=0;//标记是否找到
	for(int temp=1;temp<=num;temp++)
	{
		if(strcmp(book[temp].bookTitle,name)==0)
		{
			BookInfo(temp);
			cout<<"确定要删除此书信息? Y/N?";
			cin>>ch;
			cin.ignore();
			if(toupper(ch)=='Y')
			{
				for(int m=temp;m<num;m++)
				{
					strcpy(book[m].author,book[m+1].author);
					strcpy(book[m].bookTitle,book[m+1].bookTitle);
					strcpy(book[m].dateAdded,book[m+1].dateAdded);
					strcpy(book[m].isbn,book[m+1].isbn);
					strcpy(book[m].publisher,book[m+1].publisher);
					book[m].qtyOnHand=book[m+1].qtyOnHand;
					book[m].retail=book[m+1].retail;
					book[m].wholesale=book[m+1].wholesale;
				}
				num--;
				cout<<"删除成功!"<<endl;
				n=1;
				break;
			}
			else exit(0);
		}
	}
	if(n==0)
	{
		cout<<"查无此书"<<endl;
	}
}

void Storage::addBook()
{
	char TITLE[51];
	char ISBN[14];
	char AUTHOR[31];
	char PUB[31];
	char DATE[11];
	int ONHAND;
	float PRICE;
	float RETAIL;
	cout<<"请输入书名:";
	cin.getline(TITLE,51);
	//cin.ignore();
	setTitle(TITLE,num+1);
	


	cout<<"请输入书的ISBN编号:";
	cin.getline(ISBN,14);
	//cin.ignore();
	setISBN(ISBN,num+1);
	

	cout<<"请输入作者名:";
	cin.getline(AUTHOR,31);
	//cin.ignore();
	setAuthor(AUTHOR,num+1);
	

	cout<<"请输入出版社名:";
	cin.getline(PUB,31);
	//cin.ignore();
	setPub(PUB,num+1);
	

	cout<<"请输入添加日期:(格式如：20070428)";
	cin.getline(DATE,11);
//	cin.ignore();
	setDateAdded(DATE,num+1);
	

	cout<<"请输入数量:";
	cin>>ONHAND;
//	cin.ignore();
	setQty(ONHAND,num+1);
	

	cout<<"请输入成本价:";
	cin>>PRICE;
	//cin.ignore();
	setWholesale(PRICE,num+1);
	

	cout<<"请输入零售价:";
	cin>>RETAIL;
	//cin.ignore();
	setRetail(RETAIL,num+1);
	
	num++;
	cout<<"添加成功!书的信息为："<<num<<endl;
	BookInfo(num);
}

void Storage::lookUpBook(char *name)
{
	for(int temp=0;temp<=num;temp++)
	{
		if(strcmp(book[temp].bookTitle,name)==0)
			BookInfo(temp);
	}
}

int Storage::lookBook(char *Isbn)
{
	for(int temp=0;temp<=num;temp++)
	{
		if(strcmp(book[temp].isbn,Isbn)==0)
			return temp;
	}
	return -1;
}

void Storage::editBook(char *name)
{
	char str[51];
	float price;
	int shuliang;
	int choice;
	int nn=0;
	for(int temp=0;temp<=num;temp++)
	{
		if(strcmp(book[temp].bookTitle,name)==0)
		{
			BookInfo(temp);
			cout<<"请选择你要修改的数据项："<<endl;
			cout<<"1.ISBN   号 2.书    名 3.作   者 4. 出 版 社\n5.进书时间 6.库 存 量 7.批 发 价 8.零售价"<<endl;
			cin>>choice;
			switch(choice)
			{
			case 1:
				cout<<"输入新的ISBN号:";
				cin>>str;
				setISBN(str,temp);
				nn=1;
				cout<<"修改成功!";
				break;
			case 2:	
				cout<<"输入新的书名:";
				cin>>str;
				setTitle(str,temp);
				nn=1;
				cout<<"修改成功!";
				break;
			case 3:
				cout<<"输入新的作者:";
				cin>>str;
				setAuthor(str,temp);
				nn=1;
				cout<<"修改成功!";
				break;
			case 4:
				cout<<"输入新的出版社名:";
				cin>>str;
				setPub(str,temp);
				nn=1;
				cout<<"修改成功!";
				break;
			case 5:
				cout<<"输入新的进书时间:";
				cin>>str;
				setDateAdded(str,temp);
				nn=1;
				cout<<"修改成功!";
				break;
			case 6:
				cout<<"输入新的库存量:";
				cin>>shuliang;
				setQty(shuliang,temp);
				nn=1;
				cout<<"修改成功!";
				break;
			case 7:
				cout<<"输入新的批发价:";
				cin>>price;
				setWholesale(price,temp);
				nn=1;
				cout<<"修改成功!";
				break;
			case 8:
				cout<<"输入新的零售价:";
				cin>>price;
				setRetail(price,temp);
				nn=1;
				cout<<"修改成功!";
				break;
			}
		}
	}
	if(nn==0)
	{
		cout<<"查无此书"<<endl;
	}
}