In debug mode (-d) print all shell scripts executed.

[goals.git] / src / utils.ml

diff --git a/src/utils.ml b/src/utils.ml
index ef11975..50adfb4 100644 (file)
--- a/src/utils.ml
+++ b/src/utils.ml
@@ -21,6 +21,9 @@ open Printf
 
 let failwithf fs = ksprintf failwith fs
 
+let (//) = Filename.concat
+let is_directory d = try Sys.is_directory d with Sys_error _ -> false
+
 (* From OCaml 4.08 sources.  We can remove this when we can
  * depend on min OCaml 4.08.
  *)
@@ -54,3 +57,55 @@ let rec string_find s sub =
       -1 (* not found *)
   in
   loop 0
+
+let rec split sep str =
+  let len = String.length sep in
+  let seplen = String.length str in
+  let i = string_find str sep in
+  if i = -1 then str, ""
+  else (
+    String.sub str 0 i, String.sub str (i + len) (seplen - i - len)
+  )
+
+and nsplit ?(max = 0) sep str =
+  if max < 0 then
+    invalid_arg "String.nsplit: max parameter should not be negative";
+
+  (* If we reached the limit, OR if the pattern does not match the string
+   * at all, return the rest of the string as a single element list.
+   *)
+  if max = 1 || string_find str sep = -1 then
+    [str]
+  else (
+    let s1, s2 = split sep str in
+    let max = if max = 0 then 0 else max - 1 in
+    s1 :: nsplit ~max sep s2
+  )
+
+let isspace c =
+  c = ' '
+  (* || c = '\f' *) || c = '\n' || c = '\r' || c = '\t' (* || c = '\v' *)
+
+let triml ?(test = isspace) str =
+  let i = ref 0 in
+  let n = ref (String.length str) in
+  while !n > 0 && test str.[!i]; do
+    decr n;
+    incr i
+  done;
+  if !i = 0 then str
+  else String.sub str !i !n
+
+let trimr ?(test = isspace) str =
+  let n = ref (String.length str) in
+  while !n > 0 && test str.[!n-1]; do
+    decr n
+  done;
+  if !n = String.length str then str
+  else String.sub str 0 !n
+
+let trim ?(test = isspace) str =
+  trimr ~test (triml ~test str)
+
+let absolute_path path =
+  if not (Filename.is_relative path) then path else Sys.getcwd () // path