[CTX] [ALL] Complex Matching and Rewriting

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Complex Matching and Rewriting

A pattern following "*%" in vURL and rURL represents a pattern for complex matching specified in the format like that of scanf(3). Each format specification consists of a specification following "%", like "%c", "%[a-z]" and so on. The extended format "%S" has variable meanings determined by its adjacent character, i.e. "%Sx" means "%[^x]x": ex. "%S." for "%[^.]." and "%S/" for "%[^/]/". "%(N)" in rURL means copying Nth element in vURL. If a vURL pattern ends with "$" character, then complete matching to the end of URL string is required.

Example: complex matching and rewriting

// Requested URL: http://dhost/x/abc/def
MOUNT="/x/*%S/%S ///y/*%S.%S" -> http://dhost/y/abc.def
MOUNT="/x/*%S/%S ///y/*%(1)/%(0)" -> http://dhost/y/def/abc
MOUNT="/x/*%1[a-z]%S http://w/*%S/%S" -> http://w/a/bc/def

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