C++ (Cpp) path::has_root_path Examples

Example #1

File: ResourceManager.cpp Project: Gohla/Diversia

boost::filesystem::path naive_uncomplete(boost::filesystem::path const path, 
    boost::filesystem::path const base) {
    if (path.has_root_path()){
        if (path.root_path() != base.root_path()) {
            return path;
        } else {
            return naive_uncomplete(path.relative_path(), base.relative_path());
        }
    } else {
        if (base.has_root_path()) {
            throw "cannot uncomplete a path relative path from a rooted base";
        } else {
            typedef boost::filesystem::path::const_iterator path_iterator;
            path_iterator path_it = path.begin();
            path_iterator base_it = base.begin();
            while ( path_it != path.end() && base_it != base.end() ) {
                if (*path_it != *base_it) break;
                ++path_it; ++base_it;
            }
            boost::filesystem::path result;
            for (; base_it != base.end(); ++base_it) {
                result /= "..";
            }
            for (; path_it != path.end(); ++path_it) {
                result /= *path_it;
            }
            return result;
        }
    }
}

Example #2

File: multires_image_plugin.cpp Project: malban/mapviz

 boost::filesystem::path MultiresImagePlugin::MakePathRelative(boost::filesystem::path path, boost::filesystem::path base)
 {
   // Borrowed from: https://svn.boost.org/trac/boost/ticket/1976#comment:2
   if (path.has_root_path())
   {
     if (path.root_path() != base.root_path())
     {
       return path;
     }
     else
     {
       return MakePathRelative(path.relative_path(), base.relative_path());
     }
   }
   else
   {
     if (base.has_root_path())
     {
       ROS_WARN("Cannot uncomplete a path relative path from a rooted base.");
       return path;
     }
     else
     {
       typedef boost::filesystem::path::const_iterator path_iterator;
       path_iterator path_it = path.begin();
       path_iterator base_it = base.begin();
       while (path_it != path.end() && base_it != base.end())
       {
         if (*path_it != *base_it)
           break;
         ++path_it;
         ++base_it;
       }
       boost::filesystem::path result;
       for (; base_it != base.end(); ++base_it)
       {
         result /= "..";
       }
       for (; path_it != path.end(); ++path_it)
       {
         result /= *path_it;
       }
       return result;
     }
   }
 }

Example #3

// Resolve symlinks
fs::path fs_base::canonicalize(fs::path in) {
  fs::path accum;

  if (!in.has_root_path()) {
    // dir is relative!
    accum = fs::system_complete(".");
    if (*--accum.end() == ".")
      accum = accum.parent_path();
  }
#ifdef WIN32
  // No C:/ in the path
  else if (!in.has_root_name()) {
    accum = fs::system_complete(".").root_name() / accum;
  }
#endif

  BOOST_FOREACH(fs::path seg, in) {
    if (seg == ".")
      continue;

    // We've already canon'd the path's parent, so just remove the last dir
    if (seg == "..") {
      accum = accum.parent_path();
      continue;
    }

    accum /= seg;
#ifndef WIN32
    if (fs::is_symlink(accum)) {
      char buff[PATH_MAX];
      ssize_t len = readlink(accum.string().c_str(), buff, PATH_MAX);
      if (len == -1) {
        format fmt = format(error_fmt) % "canonical"
                                       % std::strerror(errno)
                                       % accum;
        throw exception(fmt.str());
      }
      fs::path link_path = std::string(buff, len);

      // An absolute link
      if (link_path.has_root_path())
        accum = canonicalize(link_path);
      else {
        accum.remove_filename();
        accum = canonicalize(accum / link_path);
      }
    }
#endif
  }

  // This trickery forces a trailing / onto the dir
  if (fs::is_directory(accum)) {
    accum /= ".";
    accum.remove_filename();
  }

  return accum;
}

Example #4

File: path.cpp Project: apextw/Ramen

bool is_absolute( const boost::filesystem::path& p) {
    return p.has_root_path();
}