lib/unilbrk/ulc-common.c

   1 /* Line breaking auxiliary functions.
   2    Copyright (C) 2001-2003, 2006-2020 Free Software Foundation, Inc.
   3    Written by Bruno Haible <bruno@clisp.org>, 2001.
   4
   5    This program is free software: you can redistribute it and/or modify it
   6    under the terms of the GNU Lesser General Public License as published
   7    by the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  17
  18 #include <config.h>
  19
  20 /* Specification.  */
  21 #include "unilbrk/ulc-common.h"
  22
  23 #include "c-ctype.h"
  24 #include "c-strcaseeq.h"
  25
  26 int
  27 is_utf8_encoding (const char *encoding)
  28 {
  29   if (STRCASEEQ (encoding, "UTF-8", 'U', 'T', 'F', '-', '8', 0, 0, 0, 0))
  30     return 1;
  31   return 0;
  32 }
  33
  34 #if C_CTYPE_ASCII
  35
  36 /* Tests whether a string is entirely ASCII.  Returns 1 if yes.
  37    Returns 0 if the string is in an 8-bit encoding or an ISO-2022 encoding.  */
  38 int
  39 is_all_ascii (const char *s, size_t n)
  40 {
  41   for (; n > 0; s++, n--)
  42     {
  43       unsigned char c = (unsigned char) *s;
  44
  45       if (!(c_isprint (c) || c_isspace (c)))
  46         return 0;
  47     }
  48   return 1;
  49 }
  50
  51 #endif /* C_CTYPE_ASCII */