Line data    Source code

       1              : // Copyright (C) 2020-2026 Free Software Foundation, Inc.
       2              : 
       3              : // This file is part of GCC.
       4              : 
       5              : // GCC is free software; you can redistribute it and/or modify it under
       6              : // the terms of the GNU General Public License as published by the Free
       7              : // Software Foundation; either version 3, or (at your option) any later
       8              : // version.
       9              : 
      10              : // GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      11              : // WARRANTY; without even the implied warranty of MERCHANTABILITY or
      12              : // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      13              : // for more details.
      14              : 
      15              : // You should have received a copy of the GNU General Public License
      16              : // along with GCC; see the file COPYING3.  If not see
      17              : // <http://www.gnu.org/licenses/>.
      18              : 
      19              : #include "rust-base62.h"
      20              : 
      21              : namespace Rust {
      22              : 
      23              : std::string
      24            1 : base62_integer (uint64_t value)
      25              : {
      26            1 :   const static std::string base_64
      27            1 :     = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ@$";
      28            1 :   std::string buffer (128, '\0');
      29            1 :   size_t idx = 0;
      30            1 :   size_t base = 62;
      31              : 
      32            1 :   do
      33              :     {
      34            1 :       buffer[idx] = base_64[(value % base)];
      35            1 :       idx++;
      36            1 :       value = value / base;
      37              :     }
      38            1 :   while (value != 0);
      39              : 
      40            1 :   std::reverse (buffer.begin (), buffer.begin () + idx);
      41            1 :   return buffer.substr (0, idx);
      42            1 : }
      43              : 
      44              : } // namespace Rust
      45              : 
      46              : // FIXME: Add unit testing using the selftest framework