xkinputsource.h

简单数据库管理系统

// xkInputSource.h: interface for the xkInputSource class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_XKINPUTSOURCE_H__FB0E1B1F_A8A1_48EC_84C6_7297C89167A5__INCLUDED_)
#define AFX_XKINPUTSOURCE_H__FB0E1B1F_A8A1_48EC_84C6_7297C89167A5__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#include <NEW.H>
#include "xktype.h"

class xkInputSource 
{
public:
	xkInputSource():start_(0), end_(0), cur_(0) {}
	xkInputSource(char *source_)
	{
		start_ = cur_ = source_;
		end_ = source_;
		size_t i = strlen(source_);
		while(i--)
			end_++;
	}
	virtual ~xkInputSource()
	{
	//	::operator delete ((void*)start_);
	}
	char getc()
	{
		return (cur_ != end_) ? *cur_++ : EOF;
	}
	char ungetc()
	{
		return (cur_ != start_) ? *(--cur_) : EOF;
	}
	const char* Start(){return start_;}
	const char* Cur() { return cur_;}
	const char* End() { return end_;}
private:
	char *start_;
	char *end_;
	char *cur_;
};

#endif // !defined(AFX_XKINPUTSOURCE_H__FB0E1B1F_A8A1_48EC_84C6_7297C89167A5__INCLUDED_)