common/include/ascii-ctype.h

   1 /* nbdkit
   2  * Copyright Red Hat
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
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   9  * notice, this list of conditions and the following disclaimer.
  10  *
  11  * * Redistributions in binary form must reproduce the above copyright
  12  * notice, this list of conditions and the following disclaimer in the
  13  * documentation and/or other materials provided with the distribution.
  14  *
  15  * * Neither the name of Red Hat nor the names of its contributors may be
  16  * used to endorse or promote products derived from this software without
  17  * specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  22  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
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  29  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 /* Normal ctype functions are affected by the current locale.  For
  34  * example isupper() might recognize Ä in some but not all locales.
  35  * These functions match only 7 bit ASCII characters.
  36  */
  37
  38 #ifndef NBDKIT_ASCII_CTYPE_H
  39 #define NBDKIT_ASCII_CTYPE_H
  40
  41 #define ascii_isalnum(c) (ascii_isalpha (c) || ascii_isdigit (c))
  42
  43 #define ascii_isalpha(c)                                        \
  44   (((c) >= 'a' && (c) <= 'z') || ((c) >= 'A' && (c) <= 'Z'))
  45
  46 #define ascii_isdigit(c)                        \
  47   ((c) >= '0' && (c) <= '9')
  48
  49 #define ascii_isspace(c)                                                \
  50   ((c) == '\t' || (c) == '\n' || (c) == '\f' || (c) == '\r' || (c) == ' ')
  51
  52 #define ascii_isupper(c)                        \
  53   ((c) >= 'A' && (c) <= 'Z')
  54
  55 #define ascii_islower(c)                        \
  56   ((c) >= 'a' && (c) <= 'z')
  57
  58 /* See also hexdigit.h */
  59 #define ascii_isxdigit(c)                                               \
  60   ((c) == '0' || (c) == '1' || (c) == '2' || (c) == '3' || (c) == '4' || \
  61    (c) == '5' || (c) == '6' || (c) == '7' || (c) == '8' || (c) == '9' || \
  62    (c) == 'a' || (c) == 'b' || (c) == 'c' ||                            \
  63    (c) == 'd' || (c) == 'e' || (c) == 'f' ||                            \
  64    (c) == 'A' || (c) == 'B' || (c) == 'C' ||                            \
  65    (c) == 'D' || (c) == 'E' || (c) == 'F')
  66
  67 #define ascii_tolower(c)                        \
  68   (ascii_isupper ((c)) ? (c) + 32 : (c))
  69
  70 #define ascii_toupper(c)                        \
  71   (ascii_islower ((c)) ? (c) - 32 : (c))
  72
  73 #define ascii_isprint(c) ((c) >= 32 && (c) <= 126)
  74
  75 #endif /* NBDKIT_ASCII_CTYPE_H */