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【C】 stash的struct类型相关代码

作者:郭剑锋 / 发布于2013/6/20/ 639


	//stash.h文件
	#include <iostream>
	#include <string>
	#include <assert.h>
	using namespace std;

	struct Stash
	{

	int size;
	int quantity;
	int next;
	unsigned char* storage;
	void initialize(int Size);
	void cleanup();
	int add( void* element);
	void* fetch(int index);
	int count();
	void inflate(int increase);
	};
	//stash.cpp文件
	#include "stash.h"

	const int CREASE_SIZE = 100;
	Stash::Stash(int Size)
	{
	size = Size;
	quantity = 0;
	storage = 0;
	next = 0;
	}
	Stash::Stash(int Size,int InitQuant)
	{
	size = Size;
	quantity = 0;
	next = 0;
	storage = 0;
	inflate(InitQuant);
	}
	void Stash::cleanup()
	{
	if (storage)
	{
	 cout<<"freeing storage"<<endl;
	 free(storage);
	}
	}

	int Stash::add(void* element)
	{
	if (next >= quantity)
	{
	 inflate(CREASE_SIZE);
	}
	memcpy(&(storage[next*size]),element,size);
	next++;
	return next - 1;
	}

	void* Stash::fetch(int index)
	{
	if ((index >= next) || index < 0)
	{
	 return 0;
	}
	return &(storage[index*size]);
	}
	int Stash::count()
	{
	return next;
	}

	void Stash::inflate(int increase)
	{
	void* v = realloc(storage,(quantity+increase)*size);
	assert(v);
	storage = (unsigned char*)v;
	quantity += increase;
	}
	//stash的main()函数文件
	#include "stash.h"
	const int BUFSIZE = 80;
	int main(void)
	{
	Stash intStash;
	int i;
	intStash.initialize(sizeof(int));
	for (i=0; i<100; i++)
	{
	 intStash.add(&i);
	}
	for (i=0; i<intStash.count(); i++)
	{
	 cout<<*(int*)intStash.fetch(i)<<" ";
	}
	cout<<endl;
	intStash.cleanup();
	
	//Stash stringStash;
	//FILE* file;
	//char buf[BUFSIZE];
	//char* cp;
	//stringStash.initialize(sizeof(char)*BUFSIZE);
	//file = fopen("test.cpp","r");
	//assert(file);
	//while (fgets(buf,BUFSIZE,file))
	//{
	// stringStash.add(buf);
	//}
	//fclose(file);
	//
	//i = 0;
	//while (((cp = (char*)stringStash.fetch(i++)) != 0))
	//{
	// cout<<cp<<" ";
	//}
	//cout<<endl;
	//stringStash.cleanup();
	return 0;
	}

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