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      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 (at) 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 #include <limits.h>
     46 
     47 #include "util/macros.h" // PRINTFLIKE
     48 
     49 
     50 #ifdef __cplusplus
     51 extern "C" {
     52 #endif
     53 
     54 #if !defined(_GNU_SOURCE) || defined(__APPLE__)
     55 
     56 #define strchrnul util_strchrnul
     57 static inline char *
     58 util_strchrnul(const char *s, char c)
     59 {
     60    for (; *s && *s != c; ++s);
     61 
     62    return (char *)s;
     63 }
     64 
     65 #endif
     66 
     67 #ifdef _WIN32
     68 
     69 #define sprintf util_sprintf
     70 static inline void
     71    PRINTFLIKE(2, 3)
     72 util_sprintf(char *str, const char *format, ...)
     73 {
     74    va_list ap;
     75    va_start(ap, format);
     76    vsnprintf(str, INT_MAX, format, ap);
     77    va_end(ap);
     78 }
     79 
     80 #define vasprintf util_vasprintf
     81 static inline int
     82 util_vasprintf(char **ret, const char *format, va_list ap)
     83 {
     84    va_list ap_copy;
     85 
     86    /* Compute length of output string first */
     87    va_copy(ap_copy, ap);
     88    int r = vsnprintf(NULL, 0, format, ap_copy);
     89    va_end(ap_copy);
     90 
     91    if (r < 0)
     92       return -1;
     93 
     94    *ret = (char *) malloc(r + 1);
     95    if (!*ret)
     96       return -1;
     97 
     98    /* Print to buffer */
     99    return vsnprintf(*ret, r + 1, format, ap);
    100 }
    101 
    102 #define asprintf util_asprintf
    103 static inline int
    104 util_asprintf(char **str, const char *fmt, ...)
    105 {
    106    int ret;
    107    va_list args;
    108    va_start(args, fmt);
    109    ret = vasprintf(str, fmt, args);
    110    va_end(args);
    111    return ret;
    112 }
    113 
    114 #ifndef strcasecmp
    115 #define strcasecmp stricmp
    116 #endif
    117 
    118 #define strdup _strdup
    119 
    120 #if defined(_WIN32) && !defined(HAVE_STRTOK_R)
    121 #define strtok_r strtok_s
    122 #endif
    123 
    124 #endif
    125 
    126 
    127 #ifdef __cplusplus
    128 }
    129 #endif
    130 
    131 #endif /* U_STRING_H_ */
    132