item.cpp

一个帮助你学习英语的软件~~很不错的咯~~ 对功能又做了改进~大家支持下哈~

//PK 2006/08/29 - 2007/03/08
#include "global.h"
#include "item.h"
#include "utility.h"
#include "Book.h"
#include "Records.h"

bool CItem::operator == (const CItem & rh)
{	//PK 2007/03/05
	if (_title.empty() || rh._title.empty()) return false;
	if (_title != rh._title) return false;
	return _file_name == rh._file_name;
}
void CItem::file_name(fs::path fn)
{	//PK 2007/02/22
	assert(!fn.has_branch_path());
	_file_name = _book->dir() / fn; 
}
void CItem::info()
{	//PK 2007/02/22
	_info = _book->recorder().get_info(title());
}
bool CItem::load_title()
{	//PK 2007/02/10 - 03/05
	//PK load the title from file, if the title is empty return false.
	fs::ifstream ifs(_file_name);
	getline(ifs, _title);
	trim(_title);
//	_title.erase(0, _title.find_first_not_of(' '));
//	_title.erase(_title.find_last_not_of(' ') + 1);
	return !_title.empty();
}
const string & CItem::get_article()
{	//PK 2006/10/08 - 2007/03/05

	if (!_content.empty()) return _content;

	if (!fs::exists(_file_name)) return _content;

	fs::ifstream ifs(_file_name, std::ios::binary);
	_content.reserve(10000);
	_content.assign(istreambuf_iterator<char>(ifs.rdbuf()), istreambuf_iterator<char>());
	return _content;
}
bool CItem::attach_article(const string & text)
{	//PK 2006/10/08 - 2007/03/08
	if (text.empty()) return false;
	_content = text;
	//PK save the item
	fs::ofstream ofs(_file_name, std::ios::binary);
	ofs << _content;
	_title.clear();
	return true;
}
void CItem::update()
{	//PK 2006/10/09 - 2007/02/10
	_info->update();
	_book->dirty();
}
date CItem::next_day()
{	//PK 2006/10/17 - 2007/02/10
	return _info->next_day();
}
int CItem::priority()
{	//PK 206/10/17
	date today = day_clock::local_day();
	if (_info->no_study()) return 0;
	if (next_day() > today) return -1;
	return 1;
}
int CItem::compare(CItem * item)
{	//PK 2006/10/17 - 26
	if (item == this) return 0;

	if (priority() > item->priority()) return -1;
	if (priority() < item->priority()) return 1;

	if (next_day() > item->next_day()) return 1;
	if (next_day() < item->next_day()) return -1;

	//PK when next day is same, we compare the studied times
	if (access_times() < item->access_times()) return -1;
	if (access_times() > item->access_times()) return 1;
	return 0;
}
void CItem::access_date(date d)
{	//PK 2007/02/26
	_info->_last_access = d; 
}
date CItem::access_date()
{	//PK 2007/02/26
	return _info->_last_access; 
}
void CItem::access_times(int t)
{	//PK 2007/02/26
	_info->_times = t; 
}
int CItem::access_times()
{	//PK 2007/02/26
	return _info->_times; 
}
bool CItem::remove_article()
{	//PK 2007/03/05
	if (!fs::exists(_file_name)) return false;
	fs::remove(_file_name);
	return true;
}
void CItem::title_changed(const string & origin)
{	//PK 2007/03/08
	_book->change_record_name(origin, title());
	info(_book->recorder().get_info(title()));
}