fileindexlist.cpp

所有压缩格式的压缩解压缩。

// FileIndexList.cpp: implementation of the CFileIndexList class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "Compress.h"
#include "FileIndexList.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

FILEINDEXLIST::FILEINDEXLIST()
{
	root=new FILEINDEXLISTNODE;
	root->next=NULL;
	tail=root;
	tail->nIndex=-1;
}

FILEINDEXLIST::~FILEINDEXLIST()
{
	Clear();
	delete root;
}
void FILEINDEXLIST::Clear()
{
	FILEINDEXLISTNODE *p=root->next,*q;
	while (p) 
	{
		q=p;p=p->next;
		delete q;
	}
	tail=root;tail->next=NULL;
}

void FILEINDEXLIST::Append(LPFILEINFO lpfi)
{
	FILEINDEXLISTNODE *p=new FILEINDEXLISTNODE;

	p->nIndex=tail->nIndex+1;
	p->szFileName=lpfi->szFileName;
	p->dwFileSize=lpfi->dwFileSize;
	p->dwPackedSize=lpfi->dwPackedSize;
	p->dwDateTime=lpfi->dwDateTime;
	p->dwFileAttr=lpfi->dwFileAttr;
	p->dwCRC32=lpfi->dwCRC32;
	p->bEncrypted=lpfi->bEncrypted;
	p->bIsDirectory=lpfi->bIsDirectory;

	p->next=NULL;
	tail->next=p;
	tail=p;
}

void FILEINDEXLIST::Delete(int nIndex)
{
	FILEINDEXLISTNODE *p=root,*q;

	while (p->next && p->next->nIndex!=nIndex) p=p->next;
	q=p->next;
	if (p)
	{
		if (tail==q) tail=p;
		q=p->next;
		p->next=q->next;
		delete q;
	}
	Arrange();
}

void FILEINDEXLIST::Arrange()
{
	FILEINDEXLISTNODE *p=root->next;

	int i=0;
	while (p) {p->nIndex=i++;p=p->next;}
}