kc3-lang/libxkbcommon/src/utils.h

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• Hash : db45d664
  Author :
  Date : 2012-09-10T13:34:36
  

  symbols: add GroupInfo GroupInfo keeps all of the info for a specific group in one struct. This is the old array-of-structures vs. structure-of-arrays, but in this case readability wins. It would also help with lifting the XkbNumKbdGroups limit, because we only have to worry about one array (instead of 6). Signed-off-by: Ran Benita <ran234@gmail.com>

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• src/utils.h

• /*
   * Copyright © 2012 Ran Benita <ran234@gmail.com>
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice (including the next
   * paragraph) shall be included in all copies or substantial portions of the
   * Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   * DEALINGS IN THE SOFTWARE.
   */
  
  #ifndef UTILS_H
  #define UTILS_H 1
  
  #include <stdbool.h>
  #include <string.h>
  
  /*
   * We sometimes malloc strings and then expose them as const char*'s. This
   * macro is used when we free these strings in order to avoid -Wcast-qual
   * errors.
   */
  #define UNCONSTIFY(const_ptr)  ((void *) (uintptr_t) (const_ptr))
  
  static inline bool
  streq(const char *s1, const char *s2)
  {
      return strcmp(s1, s2) == 0;
  }
  
  static inline bool
  streq_not_null(const char *s1, const char *s2)
  {
      if (!s1 || !s2)
          return false;
      return streq(s1, s2);
  }
  
  static inline bool
  istreq(const char *s1, const char *s2)
  {
      return strcasecmp(s1, s2) == 0;
  }
  
  static inline bool
  istreq_prefix(const char *s1, const char *s2)
  {
      return strncasecmp(s1, s2, strlen(s1)) == 0;
  }
  
  static inline char *
  strdup_safe(const char *s)
  {
      return s ? strdup(s) : NULL;
  }
  
  static inline bool
  isempty(const char *s)
  {
      return s == NULL || s[0] == '\0';
  }
  
  static inline const char *
  strnull(const char *s)
  {
      return s ? s : "(null)";
  }
  
  #define MIN(a, b) ((a) < (b) ? (a) : (b))
  #define MIN3(a, b, c) MIN(MIN((a), (b)), (c))
  #define MAX(a, b) ((a) > (b) ? (a) : (b))
  #define MAX3(a, b, c) MAX(MAX((a), (b)), (c))
  
  /* Compiler Attributes */
  
  #if defined(__GNUC__) && (__GNUC__ >= 4) && !defined(__CYGWIN__)
  # define XKB_EXPORT      __attribute__((visibility("default")))
  #elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
  # define XKB_EXPORT      __global
  #else /* not gcc >= 4 and not Sun Studio >= 8 */
  # define XKB_EXPORT
  #endif
  
  #if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 203)
  # define ATTR_PRINTF(x,y) __attribute__((__format__(__printf__, x, y)))
  #else /* not gcc >= 2.3 */
  # define ATTR_PRINTF(x,y)
  #endif
  
  #if (defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 205)) \
      || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
  # define ATTR_NORETURN __attribute__((__noreturn__))
  #else
  # define ATTR_NORETURN
  #endif /* GNUC  */
  
  #if (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 296)
  #define ATTR_MALLOC  __attribute__((__malloc__))
  #else
  #define ATTR_MALLOC
  #endif
  
  #if defined(__GNUC__) && (__GNUC__ >= 4)
  # define ATTR_NULL_SENTINEL __attribute__((__sentinel__))
  #else
  # define ATTR_NULL_SENTINEL
  #endif /* GNUC >= 4 */
  
  #endif /* UTILS_H */
  

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