ryzom/common/src/game_share/utils.cpp

   1 // Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
   2 // Copyright (C) 2010  Winch Gate Property Limited
   3 //
   4 // This program is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU Affero General Public License as
   6 // published by the Free Software Foundation, either version 3 of the
   7 // License, or (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 Affero General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU Affero General Public License
  15 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 //-------------------------------------------------------------------------------------------------
  18 // includes
  19 //-------------------------------------------------------------------------------------------------
  20
  21 #include "stdpch.h"
  22 #include "nel/misc/sstring.h"
  23
  24
  25 //-------------------------------------------------------------------------------------------------
  26 // namespaces
  27 //-------------------------------------------------------------------------------------------------
  28
  29 using namespace NLMISC;
  30
  31
  32 //-----------------------------------------------------------------------------
  33 // cleanPath - convert a path to standardised format
  34 //-----------------------------------------------------------------------------
  35
  36 CSString cleanPath(const CSString& path,bool addTrailingSlash)
  37 {
  38         CSString result;
  39
  40         // split the path up into its component elements
  41         CVectorSString pathComponents;
  42         path.unquoteIfQuoted().splitByOneOfSeparators("/\\",pathComponents,false,false,true,false,true);
  43
  44         // iterate over path components collapsing '.' and '..' entries
  45         for (uint32 i=0;i<pathComponents.size();++i)
  46         {
  47                 // skip "." entries
  48                 if (pathComponents[i]==".")
  49                 {
  50                         pathComponents[i].clear();
  51                         continue;
  52                 }
  53
  54                 // deal with ".."
  55                 if (pathComponents[i]=="..")
  56                 {
  57                         // run back through our component list looking for an element to remove
  58                         uint32 j;
  59                         for (j=i;j--;)
  60                         {
  61                                 if (!pathComponents[j].empty())
  62                                         break;
  63                         }
  64                         // if we found an element then remove it and the '..' as well
  65                         if (j!=std::numeric_limits<uint32>::max())
  66                         {
  67                                 pathComponents[j].clear();
  68                                 pathComponents[i].clear();
  69                         }
  70                         continue;
  71                 }
  72         }
  73
  74         // treat the special case where original path started with a '/' or '//'
  75         if (path.left(1)=="/" || path.left(1)=="\\")
  76         {
  77                 result= (path.left(2).right(1)=="/" || path.left(2).right(1)=="\\")? "//": "/";
  78         }
  79
  80         // concatenate the path bits
  81         for (uint32 i=0;i<pathComponents.size();++i)
  82         {
  83                 if (!pathComponents[i].empty())
  84                 {
  85                         result+= pathComponents[i];
  86                         result+= '/';
  87                 }
  88         }
  89
  90         // if we're not supposed to have a trailing slash then get rid of the one that's added by default
  91         if (addTrailingSlash==false && path.right(1)!='/' && path.right(1)!='\\')
  92         {
  93                 result.resize(result.size()-1);
  94         }
  95
  96         return result;
  97 }