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       1                 :             : /* A very simple string class.
       2                 :             :    Copyright (C) 2015-2025 Free Software Foundation, Inc.
       3                 :             : 
       4                 :             : This program is free software; you can redistribute it and/or modify it
       5                 :             : under the terms of the GNU General Public License as published by the
       6                 :             : Free Software Foundation; either version 3, or (at your option) any
       7                 :             : 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; see the file COPYING3.  If not see
      16                 :             : <http://www.gnu.org/licenses/>.
      17                 :             : 
      18                 :             :  In other words, you are welcome to use, share and improve this program.
      19                 :             :  You are forbidden to forbid anyone else to use, share and improve
      20                 :             :  what you give them.   Help stamp out software-hoarding!  */
      21                 :             : 
      22                 :             : #ifndef LIBCPP_LABEL_TEXT_H
      23                 :             : #define LIBCPP_LABEL_TEXT_H
      24                 :             : 
      25                 :             : /* A struct for the result of range_label::get_text: a NUL-terminated buffer
      26                 :             :    of localized text, and a flag to determine if the caller should "free" the
      27                 :             :    buffer.  */
      28                 :             : 
      29                 :             : class label_text
      30                 :             : {
      31                 :             : public:
      32                 :     1214741 :   label_text ()
      33                 :      902074 :   : m_buffer (NULL), m_owned (false)
      34                 :      843009 :   {}
      35                 :             : 
      36                 :    74441712 :   ~label_text ()
      37                 :             :   {
      38                 :    74408426 :     if (m_owned)
      39                 :      355251 :       free (m_buffer);
      40                 :         223 :   }
      41                 :             : 
      42                 :             :   /* Move ctor.  */
      43                 :    53917900 :   label_text (label_text &&other)
      44                 :    53917900 :   : m_buffer (other.m_buffer), m_owned (other.m_owned)
      45                 :             :   {
      46                 :    53917900 :     other.release ();
      47                 :             :   }
      48                 :             : 
      49                 :             :   /* Move assignment.  */
      50                 :     4634387 :   label_text & operator= (label_text &&other)
      51                 :             :   {
      52                 :     4634387 :     if (m_owned)
      53                 :          10 :       free (m_buffer);
      54                 :     4634387 :     m_buffer = other.m_buffer;
      55                 :     4634387 :     m_owned = other.m_owned;
      56                 :     4634387 :     other.release ();
      57                 :     4634387 :     return *this;
      58                 :             :   }
      59                 :             : 
      60                 :             :   /* Delete the copy ctor and copy-assignment operator.  */
      61                 :             :   label_text (const label_text &) = delete;
      62                 :             :   label_text & operator= (const label_text &) = delete;
      63                 :             : 
      64                 :             :   /* Create a label_text instance that borrows BUFFER from a
      65                 :             :      longer-lived owner.  */
      66                 :    73123851 :   static label_text borrow (const char *buffer)
      67                 :             :   {
      68                 :    73123851 :     return label_text (const_cast <char *> (buffer), false);
      69                 :             :   }
      70                 :             : 
      71                 :             :   /* Create a label_text instance that takes ownership of BUFFER.  */
      72                 :      378874 :   static label_text take (char *buffer)
      73                 :             :   {
      74                 :      378874 :     return label_text (buffer, true);
      75                 :             :   }
      76                 :             : 
      77                 :    58561207 :   void release ()
      78                 :             :   {
      79                 :    58561207 :     m_buffer = NULL;
      80                 :    53926820 :     m_owned = false;
      81                 :             :   }
      82                 :             : 
      83                 :   162792514 :   const char *get () const
      84                 :             :   {
      85                 :   162776044 :     return m_buffer;
      86                 :             :   }
      87                 :             : 
      88                 :        8920 :   bool is_owner () const
      89                 :             :   {
      90                 :        8920 :     return m_owned;
      91                 :             :   }
      92                 :             : 
      93                 :             : private:
      94                 :             :   char *m_buffer;
      95                 :             :   bool m_owned;
      96                 :             : 
      97                 :    73502725 :   label_text (char *buffer, bool owned)
      98                 :    73497781 :   : m_buffer (buffer), m_owned (owned)
      99                 :             :   {}
     100                 :             : };
     101                 :             : 
     102                 :             : #endif /* !LIBCPP_LABEL_TEXT_H  */