kc3-lang/libxkbcommon/src/utils.h

Branch : - branch - android master - tag -

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• Author : Ran Benita
  Date : 2012-07-24 19:54:14
  Hash : 89723b7c
  Message : utils: add/replace string equality macros It's more tidy and less error prone, since we use strcasecmp == 0 a lot. We replace strcmp == 0 by streq, strcasecmp == 0 by istreq, uStrCasePrefix by istreq_prefix and uDupString by strdup_safe. Signed-off-by: Ran Benita <ran234@gmail.com>

• 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;
  }
  
  /* 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 */