Method loadFileFromAddr

src/cceditor/filemanager.cpp:880–920

从指定地址开始加载文件

//从指定地址开始加载文件
int FileManager::loadFileFromAddr(QString filePath, qint64 addr, HexFileMgr* & hexFileOut)
{
	if (m_hexFileMgr.contains(filePath))
	{
		hexFileOut = m_hexFileMgr.value(filePath);

		//超过文件大小
		if (addr < 0 || addr >= hexFileOut->fileSize)
		{
			return -2;
		}

		//4K对齐
		addr &= 0xfffffffffff0;

		char* buf = new char[ONE_PAGE_BYTES + 1];
		hexFileOut->file->seek(addr);

		qint64 ret = hexFileOut->file->read(buf, ONE_PAGE_BYTES);
		if (ret <= 0)
		{
			return -1;
		}
		else
		{
			//读取成功
			hexFileOut->fileOffset = hexFileOut->file->pos();

			if (hexFileOut->contentBuf != nullptr)
			{
				delete[]hexFileOut->contentBuf;
			}

			hexFileOut->contentBuf = buf;
			hexFileOut->contentRealSize = ret;
		}
		return 0;
	}

	return -1;
}

//从指定地址开始加载文本文件
int FileManager::loadFileFromAddr(QString filePath, qint64 addr, TextFileMgr* & textFileOut)