Qt相当于PathAppend？ [英] Qt equivalent of PathAppend?

问题描述

PathAppend 是一个有用的winapi

意味着追加/ dir1的函数，它允许在一个路径附加一个路径到另一个路径。 至dir2或/ dir1至/ dir2或/ dir1 /到/ dir2将产生相同的（正确的）结果 - / dir1 / dir2（而简单的连接会产生/ dir1dir2，/ dir1 / dir2和/ dir1 // dir2）。

有没有任何Qt函数做类似的事情？

解决方案

该函数但 QDir :: cleanPath（）将处理你需要的一切，你只需要连接路径：

  QString appendPath（const QString& path1，const QString& path2）
 {
 return QDir :: cleanPath（path1 + QDir :: separator（）+ path2）; 
} 
  

我使用 QDir :: separator code>，而不是原始的/，但它不是强制的，因为QT内部将这个分隔符翻译为原生的（如果需要，请参见使用Qt构建FS路径的跨平台方法）。





请注意（对于具有.NET背景的用户）还有另一个类似的函数： code> Path.Combine（），它以某种方式类似到 PathAppend（）请参阅是否有针对其行为的QT 仿真的QPath :: Combine（）？以及稍微更详细地概述他们的差异）。

PathAppend is a useful winapi function that lets you append one path to another while taking care of any trailing backslashes (or lack of them).

Meaning that appending "/dir1" to "dir2", or "/dir1" to "/dir2", or "/dir1/" to "/dir2" would produce the same (correct) result - "/dir1/dir2" (while simply concatening would produce respectively "/dir1dir2", "/dir1/dir2", and "/dir1//dir2").

Is there any Qt function that does a similar thing?

解决方案

There is not that function but QDir::cleanPath() will handle everything you need, you just have to concatenate paths:

QString appendPath(const QString& path1, const QString& path2)
{
    return QDir::cleanPath(path1 + QDir::separator() + path2);
}

I used QDir::separator() instead of raw "/" but it's not mandatory because QT internally translate that separator to the native one (if needed, see Cross-platform way of constructing an FS path with Qt).

Note that (for whom with a .NET background) there is another similar function: Path.Combine(), it behaves somehow similar to PathAppend() but it's different. See Is there a QPath::Combine()? for a QT emulation of its behavior (and for a slightly more detailed outlining of their differences).

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