如何从基本路径和包含“..”的相对路径获取绝对文件路径？

发布于 2024-09-07 14:48:57 字数 320 浏览 2 评论 0原文

string basepath = @"C:\somefolder\subfolder\bin"; // is defined in runtime
string relative = @"..\..\templates";

string absolute = Magic(basepath, relative); // should be "C:\somefolder\templates"

你能帮我使用Magic方法吗？希望代码不要太复杂。

.NET Framework 中有“Magic”方法吗？

原文

string basepath = @"C:\somefolder\subfolder\bin"; // is defined in runtime
string relative = @"..\..\templates";

string absolute = Magic(basepath, relative); // should be "C:\somefolder\templates"

Can you help me with Magic method? Hopefully not too complicated code.

Is there the "Magic" method in .NET Framework?

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メ斷腸人バ 2024-09-14 14:48:57

如果您查看路径 类有几个方法应该有帮助：

Path.Combine

所以

Path.GetFullPath

：

string newPath = Path.Combine(basepath, relative);
string absolute = Path.GetFullPath(newPath);

虽然第二步并不是严格需要的 - 如果您打印出来的话，它会给您一个“更干净”的路径。

If you look at the Path class there are a couple of methods which should help:

Path.Combine

and

Path.GetFullPath

So:

string newPath = Path.Combine(basepath, relative);
string absolute = Path.GetFullPath(newPath);

Although the second step isn't strictly needed - it would give you a "cleaner" path if you were printing out say.

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掌心的温暖 2024-09-14 14:48:57

因为 Path.Combine 并非在所有情况下都有效，这里有一个更复杂的函数:-)

static string GetFullPath(string maybeRelativePath, string baseDirectory) {
    if (baseDirectory == null) baseDirectory = Environment.CurrentDirectory;
    var root = Path.GetPathRoot(maybeRelativePath);
    if (string.IsNullOrEmpty(root)) 
        return Path.GetFullPath(Path.Combine(baseDirectory, maybeRelativePath));
    if (root == "\\") 
        return Path.GetFullPath(Path.Combine(Path.GetPathRoot(baseDirectory), maybeRelativePath.Remove(0, 1)));
    return maybeRelativePath;
}

Path.Combine(@"C:\foo\",@"\foo\bar") 返回 @"\foo\bar" 而不是预期的 @"C:\foo\bar"

Because Path.Combine does not work in all cases here is a more complex function :-)

static string GetFullPath(string maybeRelativePath, string baseDirectory) {
    if (baseDirectory == null) baseDirectory = Environment.CurrentDirectory;
    var root = Path.GetPathRoot(maybeRelativePath);
    if (string.IsNullOrEmpty(root)) 
        return Path.GetFullPath(Path.Combine(baseDirectory, maybeRelativePath));
    if (root == "\\") 
        return Path.GetFullPath(Path.Combine(Path.GetPathRoot(baseDirectory), maybeRelativePath.Remove(0, 1)));
    return maybeRelativePath;
}

Path.Combine(@"C:\foo\",@"\foo\bar") returns @"\foo\bar" and not as expected @"C:\foo\bar"

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~没有更多了~