1// Copyright (c) 2013 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CRAZY_LINKER_SEARCH_PATH_LIST_H
6#define CRAZY_LINKER_SEARCH_PATH_LIST_H
7
8#include <string.h>
9
10#include "crazy_linker_util.h"  // for String
11
12namespace crazy {
13
14// A simple class to model a list of search paths, and perform
15// file system probing with it.
16class SearchPathList {
17 public:
18  SearchPathList() : list_(), env_list_(), full_path_() {}
19
20  // Reset the list, i.e. make it empty.
21  void Reset();
22
23  // Reset the list from an environment variable value.
24  void ResetFromEnv(const char* var_name);
25
26  // Add one or more paths to the list.
27  // |path_list| contains a list of paths separated by columns.
28  // |path_list_end| points after the list's last character.
29  void AddPaths(const char* path_list, const char* path_list_end);
30
31  // Convenience function that takes a 0-terminated string.
32  void AddPaths(const char* path_list) {
33    AddPaths(path_list, path_list + ::strlen(path_list));
34  }
35
36  // Try to find a file named |file_name| by probing the file system
37  // with every item in the list as a suffix. On success, returns the
38  // full path string, or NULL on failure.
39  const char* FindFile(const char* file_name);
40
41 private:
42  String list_;
43  String env_list_;
44  String full_path_;
45};
46
47}  // namespace crazy
48
49#endif  // CRAZY_LINKER_SEARCH_PATH_LIST_H