let normalize_path s =
let s = Str.global_replace (Str.regexp "//") "/" s in
let l = Str.split (Str.regexp "/") s in
- let rec aux = function
- | [] -> []
- | he::".."::tl -> aux tl
- | he::"."::tl -> aux (he::tl)
- | he::tl -> he :: aux tl
+ let rec aux acc = function
+ | [] -> acc
+ | he::"."::tl -> aux acc (he::tl)
+ | he::".."::tl when he <> ".." -> aux [] (acc @ tl)
+ | he::tl -> aux (acc@[he]) tl
in
(if Str.string_match (Str.regexp "^/") s 0 then "/" else "") ^
- String.concat "/" (aux l)
+ String.concat "/" (aux [] l)
^ (if Str.string_match (Str.regexp "/$") s 0 then "/" else "")
;;
try
if (Unix.stat path).Unix.st_kind = Unix.S_REG then path
else aux tl
- with Unix.Unix_error _ -> aux tl
+ with Unix.Unix_error _ as exn ->
+ aux tl
in
try
aux paths
raise
(Failure "find_in")
;;
-
+
+let is_prefix_of_aux d1 d2 =
+ let len1 = String.length d1 in
+ let len2 = String.length d2 in
+ if len2 < len1 then
+ false, len1, len2
+ else
+ let pref = String.sub d2 0 len1 in
+ pref = d1 && (len1 = len2 || d1.[len1-1] = '/' || d2.[len1] = '/'), len1, len2
+
let is_prefix_of d1 d2 =
- let len1 = String.length d1 in
- let len2 = String.length d2 in
- if len2 < len1 then
- false
- else
- let pref = String.sub d2 0 len1 in
- pref = d1 && (len1 = len2 || d2.[len1] = '/')
+ let b,_,_ = is_prefix_of_aux d1 d2 in b
+;;
+
+let chop_prefix prefix s =
+ let b,lp,ls = is_prefix_of_aux prefix s in
+ if b then
+ String.sub s lp (ls - lp)
+ else
+ s
;;
let touch s =