wydirent.cpp

一个不错

/* Copyright is licensed under GNU LGPL.                 by I.J.Wang 2003
*/

#define WYLIB_SOURCE
#include "wydirent.h"
#include <cstring>    // for memcmp

const char WyDirEnt::class_name[]="WyDirEnt";

WyDirEnt::WyDirEnt() WY__TSPC()
{
 _ent.d_ino=0;
 _ent.d_off=0;
 _ent.d_reclen=0;
 _ent.d_name[0]=0;
};

WyDirEnt::WyDirEnt(const WyDirEnt& src) WY__TSPC()
{
 _ent=src._ent;
};

WyDirEnt::WyDirEnt(WyDirEnt& src, Wy::ByMove_t) WY__TSPC()
{
 _ent=src._ent;
};

WyDirEnt::WyDirEnt(const struct dirent& dt) WY__TSPC()
{
 // self-copy ok
 std::memcpy(&_ent,&dt,sizeof(_ent));
};

bool WyDirEnt::is_default() const WY__TSPC()
{
 if((_ent.d_ino!=0)||
   (_ent.d_off!=0)||
   (_ent.d_reclen!=0)||
   (_ent.d_name[0]!=0)) {
   return(false);
 }
 return(true);
};

void WyDirEnt::reset() WY__TSPC()
{
 _ent.d_ino=0;
 _ent.d_off=0;
 _ent.d_reclen=0;
 _ent.d_name[0]=0;
};

void WyDirEnt::reset(const WyDirEnt &src) WY__TSPC()
{
 _ent=src._ent;
};

void WyDirEnt::swap(WyDirEnt& src) WY__TSPC()
{
 Wy__Base::memswp(&_ent,&src._ent,sizeof(_ent));
};

long WyDirEnt::dt_ino(void) const WY__TSPC()
{
 return _ent.d_ino;
};

off_t WyDirEnt::dt_off(void) const WY__TSPC()
{
 return _ent.d_off;
};

size_t WyDirEnt::dt_reclen(void) const WY__TSPC()
{
 return _ent.d_reclen;
};

const char* WyDirEnt::dt_name(void) const WY__TSPC()
{
 // man (3)readdir indicates d_name is zero terminated but not counted
 return(_ent.d_name); 
};

const WyDirEnt& WyDirEnt::operator =(const WyDirEnt &rhs) WY__TSPC()
{
 _ent=rhs._ent;
 return(*this); 
};

bool WyDirEnt::operator ==(const WyDirEnt& rhs) const WY__TSPC()
{
 if((_ent.d_ino!=rhs._ent.d_ino)||
   (_ent.d_off!=rhs._ent.d_off)||
   (_ent.d_reclen!=rhs._ent.d_reclen)) {
   return(false);
 }
 return std::memcmp(_ent.d_name,rhs._ent.d_name,_ent.d_reclen)==0;
};

bool WyDirEnt::operator !=(const WyDirEnt& rhs) const WY__TSPC()
{
 return !(this->operator==(rhs));
};

struct ::dirent* WyDirEnt::wy_dent_ptr(void) WY__NOTHROW__
{
 return &_ent;
};