Qt下文件拷贝实例

#include <QDir>
#include <QFileInfoList>


/**
  qCopyDirectory -- 拷贝目录
  fromDir : 源目录
  toDir   : 目标目录
  bCoverIfFileExists : ture:同名时覆盖  false:同名时返回false,终止拷贝
  返回: ture拷贝成功 false:拷贝未完成
*/
bool qCopyDirectory(const QDir& fromDir, const QDir& toDir, bool bCoverIfFileExists)
{
    QDir formDir_ = fromDir;
    QDir toDir_ = toDir;


    if(!toDir_.exists())
    {
        if(!toDir_.mkdir(toDir.absolutePath()))
            return false;
    }


    QFileInfoList fileInfoList = formDir_.entryInfoList();
    foreach(QFileInfo fileInfo, fileInfoList)
    {
        if(fileInfo.fileName() == "." || fileInfo.fileName() == "..")
            continue;


        //拷贝子目录
        if(fileInfo.isDir())
        {
            //递归调用拷贝
            if(!qCopyDirectory(fileInfo.filePath(), toDir_.filePath(fileInfo.fileName())))
                return false;
        }
        //拷贝子文件
        else
        {
            if(bCoverIfFileExists && toDir_.exists(fileInfo.fileName()))
            {
                toDir_.remove(fileInfo.fileName());
            }
            if(!QFile::copy(fileInfo.filePath(), toDir_.filePath(fileInfo.fileName())))
            {
                return false;
            }
        }
    }
    return true;
}