Method loadFileForSearch

src/cceditor/filemanager.cpp:640–694

加载文件，只为查找使用

//加载文件，只为查找使用
int FileManager::loadFileForSearch(ScintillaEditView* editView, QString filePath)
{
	QFile file(filePath);

	QFlags<QFileDevice::Permission> power = QFile::permissions(filePath);

	QIODevice::OpenMode mode;

	if (!power.testFlag(QFile::WriteUser))
	{
		//文件不能写
		mode = QIODevice::ExistingOnly | QIODevice::ReadOnly;
	}
	else
	{
		mode = QIODevice::ExistingOnly | QIODevice::ReadWrite;
	}

	if (!file.open(mode))
	{
		//qDebug() << file.error();
		return 2;
	}

	qint64 fileSize = file.size();

	qint64 bufferSizeRequested = fileSize + qMin((qint64)(1 << 20), (qint64)(fileSize / 6));

	if (bufferSizeRequested > INT_MAX)
	{
		file.close();
		return 3;
	}

	bool existGrbledCode = false;
	QString outText;
	CODE_ID fileTextCode = CODE_ID::UNKOWN;

	fileTextCode = CmpareMode::scanFileOutPut(file, fileTextCode, filePath, outText, existGrbledCode);

	//20230218 这里必须指明一下编码，否则后续会导致编码被修改
	editView->setProperty(Edit_Text_Code, fileTextCode);

	if (existGrbledCode)
	{
		//qDebug() << filePath;
		file.close();
		return 4;
	}
	file.close();

	editView->setText(outText);

	return 0;
}

const int ONE_PAGE_BYTES = 4096;