| 1 | // dirsearch.h -- directory searching for gold -*- C++ -*- |
| 2 | |
| 3 | // Copyright (C) 2006-2017 Free Software Foundation, Inc. |
| 4 | // Written by Ian Lance Taylor <iant@google.com>. |
| 5 | |
| 6 | // This file is part of gold. |
| 7 | |
| 8 | // This program is free software; you can redistribute it and/or modify |
| 9 | // it under the terms of the GNU General Public License as published by |
| 10 | // the Free Software Foundation; either version 3 of the License, or |
| 11 | // (at your option) any later version. |
| 12 | |
| 13 | // This program is distributed in the hope that it will be useful, |
| 14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | // GNU General Public License for more details. |
| 17 | |
| 18 | // You should have received a copy of the GNU General Public License |
| 19 | // along with this program; if not, write to the Free Software |
| 20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 21 | // MA 02110-1301, USA. |
| 22 | |
| 23 | #ifndef GOLD_DIRSEARCH_H |
| 24 | #define GOLD_DIRSEARCH_H |
| 25 | |
| 26 | #include <string> |
| 27 | #include <list> |
| 28 | |
| 29 | #include "options.h" |
| 30 | #include "token.h" |
| 31 | |
| 32 | namespace gold |
| 33 | { |
| 34 | |
| 35 | class General_options; |
| 36 | class Workqueue; |
| 37 | |
| 38 | // A simple interface to manage directories to be searched for |
| 39 | // libraries. |
| 40 | |
| 41 | class Dirsearch |
| 42 | { |
| 43 | public: |
| 44 | Dirsearch() |
| 45 | : directories_(NULL), token_(true) |
| 46 | { } |
| 47 | |
| 48 | // Set the list of directories to search. |
| 49 | void |
| 50 | initialize(Workqueue*, const General_options::Dir_list*); |
| 51 | |
| 52 | // Search for a file, giving one or two names to search for (the |
| 53 | // second one may be empty). Return a full path name for the file, |
| 54 | // or the empty string if it could not be found. This may only be |
| 55 | // called if the token is not blocked. Set *IS_IN_SYSROOT if the |
| 56 | // file was found in a directory which is in the sysroot. *PINDEX |
| 57 | // should be set to zero the first time this is called; it will be |
| 58 | // updated with the index of the directory where the file is found, |
| 59 | // and that value plus one may be used to find the next file with |
| 60 | // the same name(s). |
| 61 | std::string |
| 62 | find(const std::vector<std::string>& names, bool* is_in_sysroot, |
| 63 | int* pindex, std::string *found_name) const; |
| 64 | |
| 65 | // Return the blocker token which controls access. |
| 66 | Task_token* |
| 67 | token() |
| 68 | { return &this->token_; } |
| 69 | |
| 70 | // Search for a file in a directory list. This is a low-level function and |
| 71 | // therefore can be used before options and parameters are set. |
| 72 | static std::string |
| 73 | find_file_in_dir_list(const std::string& name, |
| 74 | const General_options::Dir_list& directories, |
| 75 | const std::string& extra_search_dir); |
| 76 | |
| 77 | private: |
| 78 | // We can not copy this class. |
| 79 | Dirsearch(const Dirsearch&); |
| 80 | Dirsearch& operator=(const Dirsearch&); |
| 81 | |
| 82 | // Directories to search. |
| 83 | const General_options::Dir_list* directories_; |
| 84 | // Blocker token to control access from tasks. |
| 85 | Task_token token_; |
| 86 | }; |
| 87 | |
| 88 | } // End namespace gold. |
| 89 | |
| 90 | #endif // !defined(GOLD_DIRSEARCH_H) |