X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fextlib%2FhExtlib.ml;h=c2de58f810fe99728b5b13253135c12934e02bec;hb=ba5c1c83e77e701ef11625687ec27931bc4bb944;hp=24f0dd1967ab3f8711a5538f61058bcc13417fce;hpb=683978a2627cf1ce15673360f26806593d22f7b5;p=helm.git

diff --git a/helm/software/components/extlib/hExtlib.ml b/helm/software/components/extlib/hExtlib.ml
index 24f0dd196..c2de58f81 100644
--- a/helm/software/components/extlib/hExtlib.ml
+++ b/helm/software/components/extlib/hExtlib.ml
@@ -27,7 +27,7 @@
 
 (** PROFILING *)
 
-let profiling_enabled = false ;; (* ComponentsConf.profiling *)
+let profiling_enabled = ref false ;; (* ComponentsConf.profiling *)
 
 let something_profiled = ref false
 
@@ -47,11 +47,12 @@ let set_profiling_printings f = profiling_printings := f
 
 type profiler = { profile : 'a 'b. ('a -> 'b) -> 'a -> 'b }
 let profile ?(enable = true) s =
- if profiling_enabled && enable then
+ if !profiling_enabled && enable then
    let total = ref 0.0 in
    let calls = ref 0 in
    let max = ref 0.0 in
    let profile f x =
+    if not !profiling_enabled then f x else
     let before = Unix.gettimeofday () in
     try
      incr calls;
@@ -422,3 +423,59 @@ let raise_localized_exception ~offset floc exn =
 let estimate_size x = 
   4 * (String.length (Marshal.to_string x [])) / 1024
 
+let normalize_path s = 
+  let s = Str.global_replace (Str.regexp "//") "/" s in
+  let l = Str.split (Str.regexp "/") s in
+  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)
+  ^ (if Str.string_match (Str.regexp "/$") s 0 then "/" else "")
+;;
+
+let find_in paths path =
+   let rec aux = function
+   | [] -> raise (Failure "find_in")
+   | p :: tl ->
+      let path = normalize_path (p ^ "/" ^ path) in
+       try
+         if (Unix.stat path).Unix.st_kind = Unix.S_REG then path
+         else aux tl
+       with Unix.Unix_error _ -> 
+               aux tl
+   in
+   try
+     aux paths
+   with Unix.Unix_error _ | Failure _ -> 
+     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 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 =
+  try close_out(open_out s) with Sys_error _ -> ()
+;;