gold/dirsearch.h

   1 // dirsearch.h -- directory searching for gold  -*- C++ -*-
   2
   3 #ifndef GOLD_DIRSEARCH_H
   4 #define GOLD_DIRSEARCH_H
   5
   6 #include <string>
   7 #include <list>
   8
   9 #include "workqueue.h"
  10
  11 namespace gold
  12 {
  13
  14 class General_options;
  15
  16 // A simple interface to manage directories to be searched for
  17 // libraries.
  18
  19 class Dirsearch
  20 {
  21  public:
  22   Dirsearch();
  23
  24   // Add a directory to the search path.
  25   void
  26   add(Workqueue*, const char*);
  27
  28   // Add a list of directories to the search path.
  29   void
  30   add(Workqueue*, const General_options::Dir_list&);
  31
  32   // Search for a file, giving one or two names to search for (the
  33   // second one may be empty).  Return a full path name for the file,
  34   // or the empty string if it could not be found.  This may only be
  35   // called if the token is not blocked.
  36   std::string
  37   find(const std::string&, const std::string& n2 = std::string()) const;
  38
  39   // Return a reference to the blocker token which controls access.
  40   const Task_token&
  41   token() const
  42   { return this->token_; }
  43
  44  private:
  45   // We can not copy this class.
  46   Dirsearch(const Dirsearch&);
  47   Dirsearch& operator=(const Dirsearch&);
  48
  49   // Directories to search.
  50   std::list<const char*> directories_;
  51   // Blocker token to control access from tasks.
  52   Task_token token_;
  53 };
  54
  55 } // End namespace gold.
  56
  57 #endif // !defined(GOLD_DIRSEARCH_H)