regex:file_path:windows
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Regex - File Path - Windows
Windows
(\\\\([a-z|A-Z|0-9|-|_|\s]{2,15}){1}(\.[a-z|A-Z|0-9|-|_|\s]{1,64}){0,3}){1}(\\[^\\|\/|\:|\*|\?|"|\<|\>|\|]{1,64}){1,}(\\){0,}
NOTE: Disallows a few characters: \/:*?"<>|.
^((?:[a-z]:\\$|(?:[a-z]:|\\\\[a-z]+\\(?!\.)[^\r\n$<>]+\$?)))((\\|(\\(?!\.)[^\r\n<>\\]+)*)(?<!\\)$)
^[a-zA-Z]:\\(((?![<>:"/\\|?*]).)+((?<![ .])\\)?)*$
NOTE: It makes the path conform to the NTFS standard (see the MSDN spec).
- ^[a-zA-Z]:\\ matches single drive letter, with colon and backslash
- (?![<>:"/\\|?*]) is a negative lookahead to ensure the next character is not invalid
- ((?![<>:"/\\|?*]).)+ wraps that lookahead, followed by the next character, any number of times
- (?<![ .])\\ is a negative lookbehind to ensure the file/directory doesn't end with a space or period. Please note: Lookbehinds are not fully implemented everywhere just yet.
All of that is is repeated 0 to many times, with the last backslash optional.
For many use cases it may be best to restrict the path length to 256 characters.
- To do so, replace *with {0,256}.
regex/file_path/windows.1621506783.txt.gz · Last modified: 2021/05/20 10:33 by peter