kc3-lang/libxkbcommon/src/utils.h

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• Hash : 9de067aa
  Author :
  Date : 2012-08-27T21:31:18
  

  compat: ignore "group" (compatibility) statements
  
  Group compatibility statements are like the following:
      group 3 = AltGr;
  This currently results in:
      keymap->groups[2].mask = <real mod mapped from AltGr vmod>
  And we don't do any thing with this value later. The reason it exists in
  XKB is to support non-XKB clients (i.e. XKB support disabled entirely in
  the server), which do not know the concept of "group", and use some
  modifier to distinguish between the first and second keyboard layouts
  (usually with the AltGr key). We don't care about all of that, so we can
  forget about it.
  
  One artifact of this removal is that xkb_map_num_groups no longer
  works, because it counted through keymap->groups (this wasn't entirely
  correct BTW). Instead we add a new num_groups member to the keymap,
  which just hold the maximum among the xkb_key's num_groups. This also
  means we don't have to compute anything just to get the number of
  groups.
  
  Signed-off-by: Ran Benita <ran234@gmail.com>
  

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• src/utils.h

• #ifndef UTILS_H
  #define UTILS_H 1
  
  /*\
   *
   *                          COPYRIGHT 1990
   *                    DIGITAL EQUIPMENT CORPORATION
   *                       MAYNARD, MASSACHUSETTS
   *                        ALL RIGHTS RESERVED.
   *
   * THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT NOTICE AND
   * SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL EQUIPMENT CORPORATION.
   * DIGITAL MAKES NO REPRESENTATIONS ABOUT THE SUITABILITY OF THIS SOFTWARE
   * FOR ANY PURPOSE.  IT IS SUPPLIED "AS IS" WITHOUT EXPRESS OR IMPLIED
   * WARRANTY.
   *
   * IF THE SOFTWARE IS MODIFIED IN A MANNER CREATING DERIVATIVE COPYRIGHT
   * RIGHTS, APPROPRIATE LEGENDS MAY BE PLACED ON THE DERIVATIVE WORK IN
   * ADDITION TO THAT SET FORTH ABOVE.
   *
   * Permission to use, copy, modify, and distribute this software and its
   * documentation for any purpose and without fee is hereby granted, provided
   * that the above copyright notice appear in all copies and that both that
   * copyright notice and this permission notice appear in supporting
   * documentation, and that the name of Digital Equipment Corporation not be
   * used in advertising or publicity pertaining to distribution of the
   * software without specific, written prior permission.
   \*/
  
  #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
  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';
  }
  
  #define MIN(a, b) ((a) < (b) ? (a) : (b))
  #define MAX(a, b) ((a) > (b) ? (a) : (b))
  
  /* 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
  
  #endif /* UTILS_H */
  

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