1  /* Removes leading and/or trailing whitespaces
       2     Copyright (C) 2006, 2009-2021 Free Software Foundation, Inc.
       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 3 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
      15     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      16  
      17  /* Written by Davide Angelocola <davide.angelocola@gmail.com> */
      18  
      19  /* Trim mode. */
      20  #define TRIM_TRAILING 0
      21  #define TRIM_LEADING 1
      22  #define TRIM_BOTH 2
      23  
      24  /* Removes trailing and leading whitespaces. */
      25  #define trim(s) trim2(s, TRIM_BOTH)
      26  
      27  /* Removes trailing whitespaces. */
      28  #define trim_trailing(s) trim2(s, TRIM_TRAILING)
      29  
      30  /* Removes leading whitespaces. */
      31  #define trim_leading(s) trim2(s, TRIM_LEADING)
      32  
      33  char *trim2 (const char *, int);