1 /**************************************************************************
3 * Copyright 2008 VMware, Inc.
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
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11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * Platform independent functions for string manipulation.
32 * @author Jose Fonseca <jfonseca@vmware.com>
38 #if !defined(XF86_LIBC_H)
46 #include "util/macros.h" // PRINTFLIKE
55 #define util_strchrnul strchrnul
60 util_strchrnul(const char *s, char c)
62 for (; *s && *s != c; ++s);
72 util_vsnprintf(char *str, size_t size, const char *format, va_list ap)
74 /* We need to use _vscprintf to calculate the length as vsnprintf returns -1
75 * if the number of characters to write is greater than count.
80 ret = _vsnprintf(str, size, format, ap);
82 ret = _vscprintf(format, ap_copy);
90 util_snprintf(char *str, size_t size, const char *format, ...)
95 ret = util_vsnprintf(str, size, format, ap);
101 util_vsprintf(char *str, const char *format, va_list ap)
103 util_vsnprintf(str, (size_t)-1, format, ap);
108 util_sprintf(char *str, const char *format, ...)
111 va_start(ap, format);
112 util_vsnprintf(str, (size_t)-1, format, ap);
117 util_vasprintf(char **ret, const char *format, va_list ap)
121 /* Compute length of output string first */
122 va_copy(ap_copy, ap);
123 int r = util_vsnprintf(NULL, 0, format, ap_copy);
129 *ret = (char *) malloc(r + 1);
133 /* Print to buffer */
134 return util_vsnprintf(*ret, r + 1, format, ap);
138 util_strchr(const char *s, char c)
140 char *p = util_strchrnul(s, c);
142 return *p ? p : NULL;
146 util_strncat(char *dst, const char *src, size_t n)
148 char *p = dst + strlen(dst);
152 for (i = 0; i < n && *q != '\0'; ++i)
160 util_strcmp(const char *s1, const char *s2)
162 unsigned char u1, u2;
165 u1 = (unsigned char) *s1++;
166 u2 = (unsigned char) *s2++;
176 util_strncmp(const char *s1, const char *s2, size_t n)
178 unsigned char u1, u2;
181 u1 = (unsigned char) *s1++;
182 u2 = (unsigned char) *s2++;
192 util_strstr(const char *haystack, const char *needle)
194 const char *p = haystack;
195 size_t len = strlen(needle);
197 for (; (p = util_strchr(p, *needle)) != 0; p++) {
198 if (util_strncmp(p, needle, len) == 0) {
206 #define util_strcasecmp stricmp
207 #define util_strdup _strdup
211 #define util_vsnprintf vsnprintf
212 #define util_snprintf snprintf
213 #define util_vsprintf vsprintf
214 #define util_vasprintf vasprintf
215 #define util_sprintf sprintf
216 #define util_strchr strchr
217 #define util_strcmp strcmp
218 #define util_strncmp strncmp
219 #define util_strncat strncat
220 #define util_strstr strstr
221 #define util_strcasecmp strcasecmp
222 #define util_strdup strdup
231 #endif /* U_STRING_H_ */