src/util/u_string.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /**
  29  * @file
  30  * Platform independent functions for string manipulation.
  31  *
  32  * @author Jose Fonseca <jfonseca@vmware.com>
  33  */
  34
  35 #ifndef U_STRING_H_
  36 #define U_STRING_H_
  37
  38 #if !defined(XF86_LIBC_H)
  39 #include <stdio.h>
  40 #endif
  41 #include <stdlib.h>
  42 #include <stddef.h>
  43 #include <stdarg.h>
  44 #include <string.h>
  45
  46 #include "util/macros.h" // PRINTFLIKE
  47
  48
  49 #ifdef __cplusplus
  50 extern "C" {
  51 #endif
  52
  53 #if !defined(_GNU_SOURCE) || defined(__APPLE__)
  54
  55 #define strchrnul util_strchrnul
  56 static inline char *
  57 util_strchrnul(const char *s, char c)
  58 {
  59    for (; *s && *s != c; ++s);
  60
  61    return (char *)s;
  62 }
  63
  64 #endif
  65
  66 #ifdef _WIN32
  67
  68 #define sprintf util_sprintf
  69 static inline void
  70    PRINTFLIKE(2, 3)
  71 util_sprintf(char *str, const char *format, ...)
  72 {
  73    va_list ap;
  74    va_start(ap, format);
  75    vsnprintf(str, (size_t)-1, format, ap);
  76    va_end(ap);
  77 }
  78
  79 #define vasprintf util_vasprintf
  80 static inline int
  81 util_vasprintf(char **ret, const char *format, va_list ap)
  82 {
  83    va_list ap_copy;
  84
  85    /* Compute length of output string first */
  86    va_copy(ap_copy, ap);
  87    int r = vsnprintf(NULL, 0, format, ap_copy);
  88    va_end(ap_copy);
  89
  90    if (r < 0)
  91       return -1;
  92
  93    *ret = (char *) malloc(r + 1);
  94    if (!*ret)
  95       return -1;
  96
  97    /* Print to buffer */
  98    return vsnprintf(*ret, r + 1, format, ap);
  99 }
 100
 101 #define asprintf util_asprintf
 102 static inline int
 103 util_asprintf(char **str, const char *fmt, ...)
 104 {
 105    int ret;
 106    va_list args;
 107    va_start(args, fmt);
 108    ret = vasprintf(str, fmt, args);
 109    va_end(args);
 110    return ret;
 111 }
 112
 113 #ifndef strcasecmp
 114 #define strcasecmp stricmp
 115 #endif
 116
 117 #define strdup _strdup
 118
 119 #if defined(_WIN32) && !defined(HAVE_STRTOK_R)
 120 #define strtok_r strtok_s
 121 #endif
 122
 123 #endif
 124
 125
 126 #ifdef __cplusplus
 127 }
 128 #endif
 129
 130 #endif /* U_STRING_H_ */