文件Uri方案和相關文件

Question

假設uri的方案是「文件」。還假定路徑以'。'開頭。

示例路徑是'./.bashrc'。 fulluri會如何看待？ 'file：//./.bashrc'對我來說顯得很奇怪。

Answer 1

總之，一個文件URL的格式如下：

file://localhost/absolute/path/to/file [ok] 

，或者你可以省略host（但不是斜線）：

file:///absolute/path/to/file [ok] 

但不是這樣的：

file://file_at_current_dir [no way] 

也沒有：

file://./file_at_current_dir [no way] 

我只是確認，通過Python的urllib2.urlopen（）

從 http://en.wikipedia.org/wiki/File_URI_scheme

更多細節：

"file:///foo.txt" is okay, while "file://foo.txt" is not, 
although some interpreters manage to handle the latter 

Answer 2

這是不可能使用完整的文件： '' 與URI或'..'分段在沒有該路徑的根部分的路徑中。無論你使用'file：//./.bashrc'還是'file：///./.bashrc'，這些路徑都沒有意義。如果你想用一個相對鏈接，使用它沒有協議/授權部分：

<a href="./.bashrc">link</a> 

如果您想使用完整的URI，你必須告訴根相對於它的相對路徑是：

<a href="file:///home/kindrik/./.bashrc">link</a> 

據RFC 3986

The path segments "." and "..", also known as dot-segments, are 
defined for relative reference within the path name hierarchy. They 
are intended for use at the beginning of a relative-path reference 
(Section 4.2) to indicate relative position within the hierarchical 
tree of names. This is similar to their role within some operating 
systems' file directory structures to indicate the current directory 
and parent directory, respectively. However, unlike in a file 
system, these dot-segments are only interpreted within the URI path 
hierarchy and are removed as part of the resolution process (Section 
5.2). 

The complete path segments "." and ".." are intended only for use 
within relative references (Section 4.1) and are removed as part of 
the reference resolution process (Section 5.2). However, some 
deployed implementations incorrectly assume that reference resolution 
is not necessary when the reference is already a URI and thus fail to 
remove dot-segments when they occur in non-relative paths. URI 
normalizers should remove dot-segments by applying the 
remove_dot_segments algorithm to the path, as described in Section 5.2.4. 

The complete path segments "." and ".." are intended only for use 
within relative references (Section 4.1) and are removed as part of 
the reference resolution process (Section 5.2) 

RFC 3986描述甚至消除這些的算法 「」和來自URI的「..」。

Answer 3

在終端中，您可以使用「$ PWD」鍵入「file：//$PWD/.bashrc」來引用當前目錄。