www.pudn.com > 基于VC的神经网络开发程序包(源码).rar > File.cpp

#include "../include/File.h" 
#include "../include/Exception.h" 
#include "../include/defines.h" 
#include  
 
using namespace std; 
namespace annie 
{ 
File::File() 
{	_isOpen=false;	} 
 
File::File(string filename) 
{	_isOpen=false;	open(filename);	} 
 
void 
File::open(string filename) 
{ 
	if (_isOpen) 
		throw Exception("File::open() - Another file is already open"); 
	this->_filename=filename; 
	_file.open(filename.c_str(),ios::in); 
	if (!_file) 
		throw Exception("File::open() - Couldn't open the file for reading"); 
	if (readWord().compare("ANNIE_FILE")) 
		throw Exception("File::open() - The file doesn't appear to be an annie file"); 
	if (readWord().compare(ANNIE_VERSION)) 
		throw Exception("File::open() - The file is annie's file, but not the right version"); 
} 
 
void 
File::_next() 
{ 
	char temp; 
	ws(_file); 
	while (_file.peek()=='#') 
	{ 
		do	 
		{ 
			_file.get(temp); 
		}  
		while (temp!='\n' && !_file.eof()); 
		ws(_file); 
	} 
} 
 
char 
File::readChar() 
{ 
	char c='\0'; 
	_next(); 
	if (!_file.eof()) 
		_file>>c; 
	return c; 
} 
 
int 
File::readInt() 
{ 
	int i=0; 
	_next(); 
	if (!_file.eof()) 
		_file>>i; 
	ws(_file); 
	return i; 
} 
 
real 
File::readDouble() 
{ 
	real d=0; 
	_next(); 
	if (!_file.eof()) 
		_file>>d; 
	ws(_file); 
	return d; 
} 
 
string 
File::readWord() 
{	 
	string s(""); 
	_next(); 
	if (!_file.eof()) 
		_file>>s; 
	ws(_file); 
	return s; 
} 
 
string 
File::readLine() 
{ 
	string s; 
	_next(); 
	getline(_file,s,'\n'); 
	int commentPos=s.find_first_of('#',0); 
	return s.substr(0,commentPos); 
} 
 
void 
File::close() 
{ 
	if (_isOpen) 
	{ 
		_file.close(); 
		_isOpen=false; 
	} 
} 
 
bool 
File::eof() 
{	return _file.eof() || (_file.peek()==-1);} 
 
}; //namespace annie