問題描述

PathAppend 是一個有用的 winapi 函數，可讓您將一個路徑附加到另一個路徑，同時處理任何尾隨反斜杠(或缺少反斜杠).

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).

表示將"/dir1"附加到"dir2"，或將"/dir1"附加到"/dir2" 或 "/dir1/" 到 "/dir2" 將產生相同(正確)的結果 - "/dir1/dir2" (雖然簡單地連接會分別產生"/dir1dir2"、"/dir1/dir2"和"/dir1//dir2").

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").

有沒有類似的 Qt 函數?

Is there any Qt function that does a similar thing?

推薦答案

沒有那個函數，但是 QDir::cleanPath() 會處理你需要的一切，你只需要連接路徑:

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);
}

我使用了 QDir::separator() 而不是原始的/"，但這不是強制性的，因為 QT 在內部將該分隔符轉換為原生分隔符(如果需要，請參閱 用Qt構建FS路徑的跨平臺方式).

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).

請注意(對于具有 .NET 背景的人)還有另一個類似的函數:Path.Combine()，它的行為與 PathAppend() 但它是不同的.請參閱是否有 QPath::Combine()? 以了解其行為的 QT 仿真(以及稍微更詳細地概述它們的差異).

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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