src/libs/fs/directory.cxx

   1 //
   2 // Copyright (C) 2007, 2008 Francesco Salvestrini
   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 along
  15 // with this program; if not, write to the Free Software Foundation, Inc.,
  16 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17 //
  18
  19 #include "config.h"
  20
  21 #include <string>
  22
  23 #include <sys/stat.h>
  24 #include <sys/types.h>
  25 #include <unistd.h>
  26 #include <dirent.h>
  27 #include <errno.h>
  28
  29 #include "libs/misc/debug.h"
  30 #include "libs/misc/exception.h"
  31 #include "libs/fs/directory.h"
  32
  33 namespace FS {
  34         Directory::Directory(const std::string & name)
  35         {
  36                 if (name == "") {
  37                         throw Exception("Missing directory name");
  38                 }
  39
  40                 // Remove trailing '/'
  41                 std::string::size_type p;
  42
  43                 p = name.rfind("/");
  44                 //TR_DBG("name = '%s', p = %d, size = %d\n",
  45                 //       name.c_str(), p, name.size());
  46
  47                 if (p == (name.size() - 1)) {
  48                         name_ = name.substr(0, p);
  49                         return;
  50                 }
  51
  52                 name_ = name;
  53         }
  54
  55         Directory::~Directory(void)
  56         {
  57         }
  58
  59         const std::string & Directory::name(void) const
  60         {
  61                 return name_;
  62         }
  63
  64         void Directory::create(void) const
  65         {
  66                 // XXX FIXME: Consider using the gnulib replacement
  67                 if (::mkdir(name_.c_str(), 0700) != 0) {
  68                         throw Exception("Cannot create "
  69                                         "'" + name_ + "' "
  70                                         "directory "
  71                                         "(" +
  72                                         std::string(strerror(errno)) +
  73                                         ")");
  74                 }
  75         }
  76
  77         void Directory::remove(void) const
  78         {
  79                 // XXX FIXME: Consider using the gnulib replacement
  80                 if (::rmdir(name_.c_str()) != 0) {
  81                         throw Exception("Cannot remove "
  82                                         "'" + name_ + "' "
  83                                         "directory "
  84                                         "(" +
  85                                         std::string(strerror(errno)) +
  86                                         ")");
  87                 }
  88         }
  89
  90         bool Directory::exists(void) const
  91         {
  92                 // XXX FIXME: Consider using the gnulib replacement
  93                 DIR * tmp = opendir(name_.c_str());
  94                 if (tmp == 0) {
  95                         BUG_ON(errno == EBADF);
  96
  97                         if (errno == ENOENT) {
  98                                 return false;
  99                         }
 100
 101                         throw Exception("Cannot open "
 102                                         "'" + name_ + "' "
 103                                         "directory "
 104                                         "(" +
 105                                         std::string(strerror(errno)) +
 106                                         ")");
 107                 }
 108
 109                 // XXX FIXME: Maybe a check on closedir() return value ...
 110                 closedir(tmp);
 111
 112                 return true;
 113         }
 114 };