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(* Otags III
*
* Hendrik Tews Copyright (C) 2010 - 2017
*
* This file is part of "Otags III".
*
* "Otags III" is free software: you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* "Otags III" 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
* General Public License in file COPYING in this or one of the parent
* directories for more details.
*
* You should have received a copy of the GNU General Public License
* along with "Otags III". If not, see
* <http://www.gnu.org/licenses/>.
*
* hold the in_channel of the source file
*
*)
open Otags_misc
open Otags_types (* for Otags_parsing_error *)
let last_primary_file = ref ""
let current_file_name = ref ""
let current_in_channel = ref stdin
let reset () =
if !current_file_name <> ""
then close_in !current_in_channel;
current_file_name := ""
let open_file ?(primary_file = false) file_name loc =
if primary_file
then last_primary_file := file_name;
reset ();
current_in_channel :=
(try
open_in file_name
with
| Sys_error sys_msg ->
let msg =
if primary_file
then "Cannot open " ^ sys_msg
else
Printf.sprintf
("In file %s, character position %d: " ^^
"Original source not available: %s")
!last_primary_file
loc.Location.loc_start.Lexing.pos_cnum
sys_msg
in
raise(Otags_parsing_error(loc, msg))
);
current_file_name := file_name
let get_channel ?primary_file loc =
if file_of_loc loc <> !current_file_name
then open_file ?primary_file (file_of_loc loc) loc;
!current_in_channel
let full_string_of_loc (loc : Location.t) =
Printf.sprintf "[%s: sl %d(%d) so %d el %d(%d) eo %d%s]"
loc.Location.loc_start.Lexing.pos_fname
loc.Location.loc_start.Lexing.pos_lnum
loc.Location.loc_start.Lexing.pos_bol
loc.Location.loc_start.Lexing.pos_cnum
loc.Location.loc_end.Lexing.pos_lnum
loc.Location.loc_end.Lexing.pos_bol
loc.Location.loc_end.Lexing.pos_cnum
(if loc.Location.loc_ghost then " GHOST" else " REAL")
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