summaryrefslogtreecommitdiffstats
path: root/binutils-2.25/gold/dirsearch.h
blob: d020d94f53abb2ea24e98a94700ca7b993d5b064 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
// dirsearch.h -- directory searching for gold  -*- C++ -*-

// Copyright (C) 2006-2014 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.

// This file is part of gold.

// This program 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.

// 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 General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
// MA 02110-1301, USA.

#ifndef GOLD_DIRSEARCH_H
#define GOLD_DIRSEARCH_H

#include <string>
#include <list>

#include "options.h"
#include "token.h"

namespace gold
{

class General_options;
class Workqueue;

// A simple interface to manage directories to be searched for
// libraries.

class Dirsearch
{
 public:
  Dirsearch()
    : directories_(NULL), token_(true)
  { }

  // Set the list of directories to search.
  void
  initialize(Workqueue*, const General_options::Dir_list*);

  // Search for a file, giving one or two names to search for (the
  // second one may be empty).  Return a full path name for the file,
  // or the empty string if it could not be found.  This may only be
  // called if the token is not blocked.  Set *IS_IN_SYSROOT if the
  // file was found in a directory which is in the sysroot.  *PINDEX
  // should be set to zero the first time this is called; it will be
  // updated with the index of the directory where the file is found,
  // and that value plus one may be used to find the next file with
  // the same name(s).
  std::string
  find(const std::vector<std::string>& names, bool* is_in_sysroot,
       int* pindex, std::string *found_name) const;

  // Return the blocker token which controls access.
  Task_token*
  token()
  { return &this->token_; }

  // Search for a file in a directory list.  This is a low-level function and
  // therefore can be used before options and parameters are set.
  static std::string
  find_file_in_dir_list(const std::string& name,
                        const General_options::Dir_list& directories,
                        const std::string& extra_search_dir);

 private:
  // We can not copy this class.
  Dirsearch(const Dirsearch&);
  Dirsearch& operator=(const Dirsearch&);

  // Directories to search.
  const General_options::Dir_list* directories_;
  // Blocker token to control access from tasks.
  Task_token token_;
};

} // End namespace gold.

#endif // !defined(GOLD_DIRSEARCH_H)