File: backtrace.ml

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xen-api-libs 0.5.2-3
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(*
 * Copyright (C) 2006-2009 Citrix Systems Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation; version 2.1 only. with the special
 * exception on linking described in file LICENSE.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *)
let get_backtrace () =
  let b = Printexc.get_backtrace () in
  let nicify_locator s =
    try
      match Stringext.String.split ',' s with
      | file :: line :: character :: [] ->
        let i = String.index_from file 0 '"' + 1 in
        let i2 = String.index_from file i '"' in
        String.concat "" [ String.sub file i (i2 - i); ":";
                           (try String.sub line 6 (String.length line - 6) with _ -> line); ".";
                           (try String.sub character 12 (String.length character - 12) with _ -> character) ]
      | _ -> s
    with _ -> s
    in
  try
    let list = Stringext.String.split '\n' b in
	let list = List.filter ((<>) "") list in
    "Raised at " ^ (String.concat " -> " (List.map nicify_locator list))
  with _ ->
    b