1 // dirsearch.h -- directory searching for gold -*- C++ -*- 2 3 // Copyright (C) 2006-2016 Free Software Foundation, Inc. 4 // Written by Ian Lance Taylor <iant (at) 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) 91
