libs/pbd/search_path.cc

   1 /*
   2     Copyright (C) 2007 Tim Mayberry
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include "pbd/tokenizer.h"
  21 #include "pbd/search_path.h"
  22 #include "pbd/error.h"
  23
  24 using namespace std;
  25
  26 namespace {
  27
  28 #ifdef WIN32
  29 const char * const path_delimiter = ";";
  30 #else
  31 const char * const path_delimiter = ":";
  32 #endif
  33
  34 }
  35
  36 namespace PBD {
  37
  38 SearchPath::SearchPath ()
  39 {
  40
  41 }
  42
  43 SearchPath::SearchPath (const string& path)
  44 {
  45         vector<sys::path> tmp;
  46
  47         if (tokenize (path, string(path_delimiter), std::back_inserter (tmp))) {
  48                 add_directories (tmp);
  49         }
  50 }
  51
  52 SearchPath::SearchPath (const sys::path& directory_path)
  53 {
  54         add_directory (directory_path);
  55 }
  56
  57 SearchPath::SearchPath (const vector<sys::path>& paths)
  58 {
  59         add_directories (paths);
  60 }
  61
  62 void
  63 SearchPath::add_directory (const sys::path& directory_path)
  64 {
  65         // test for existance and warn etc?
  66         push_back(directory_path);
  67 }
  68
  69 void
  70 SearchPath::add_directories (const vector<sys::path>& paths)
  71 {
  72         for(vector<sys::path>::const_iterator i = paths.begin(); i != paths.end(); ++i) {
  73                 add_directory (*i);
  74         }
  75 }
  76
  77 const string
  78 SearchPath::to_string () const
  79 {
  80         string path;
  81
  82         for (vector<sys::path>::const_iterator i = begin(); i != end(); ++i) {
  83                 path += (*i).to_string();
  84                 path += path_delimiter;
  85         }
  86
  87         path = path.substr (0, path.length() - 1); // drop final separator
  88
  89         return path;
  90 }
  91
  92 SearchPath&
  93 SearchPath::operator+= (const SearchPath& spath)
  94 {
  95         insert(end(), spath.begin(), spath.end());
  96         return *this;
  97 }
  98
  99 SearchPath&
 100 SearchPath::operator+= (const sys::path& directory_path)
 101 {
 102         add_directory (directory_path);
 103         return *this;
 104 }
 105
 106 SearchPath&
 107 SearchPath::operator+ (const sys::path& directory_path)
 108 {
 109         add_directory (directory_path);
 110         return *this;
 111 }
 112
 113 SearchPath&
 114 SearchPath::operator+ (const SearchPath& spath)
 115 {
 116         // concatenate paths into new SearchPath
 117         insert(end(), spath.begin(), spath.end());
 118         return *this;
 119 }
 120
 121 SearchPath&
 122 SearchPath::add_subdirectory_to_paths (const string& subdir)
 123 {
 124         for (vector<sys::path>::iterator i = begin(); i != end(); ++i) {
 125                 // should these new paths just be added to the end of
 126                 // the search path rather than replace?
 127                 *i /= subdir;
 128         }
 129
 130         return *this;
 131 }
 132
 133 } // namespace PBD