2 * Copyright © 2012 Ran Benita <ran234@gmail.com>
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
37 * We sometimes malloc strings and then expose them as const char*'s. This
38 * macro is used when we free these strings in order to avoid -Wcast-qual
41 #define UNCONSTIFY(const_ptr) ((void *) (uintptr_t) (const_ptr))
43 #define STATIC_ASSERT(expr, message) do { \
44 switch (0) { case 0: case (expr): ; } \
48 streq(const char *s1, const char *s2)
50 return strcmp(s1, s2) == 0;
54 streq_not_null(const char *s1, const char *s2)
62 istreq(const char *s1, const char *s2)
64 return strcasecmp(s1, s2) == 0;
68 istreq_prefix(const char *s1, const char *s2)
70 return strncasecmp(s1, s2, strlen(s1)) == 0;
74 strdup_safe(const char *s)
76 return s ? strdup(s) : NULL;
80 strlen_safe(const char *s)
82 return s ? strlen(s) : 0;
86 isempty(const char *s)
88 return s == NULL || s[0] == '\0';
91 static inline const char *
92 strnull(const char *s)
94 return s ? s : "(null)";
97 static inline const char *
98 strempty(const char *s)
104 memdup(const void *mem, size_t nmemb, size_t size)
106 void *p = calloc(nmemb, size);
108 memcpy(p, mem, nmemb * size);
113 min(int misc, int other)
115 return (misc < other) ? misc : other;
119 max(int misc, int other)
121 return (misc > other) ? misc : other;
124 /* ctype.h is locale-dependent and has other oddities. */
128 return ch == ' ' || (ch >= '\t' && ch <= '\r');
134 return (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z');
140 return ch >= '0' && ch <= '9';
146 return is_alpha(ch) || is_digit(ch);
153 (ch >= '0' && ch <= '9') ||
154 (ch >= 'a' && ch <= 'f') ||
155 (ch >= 'A' && ch <= 'F');
161 /* See table in ascii(7). */
162 return ch >= '!' && ch <= '~';
166 * Return the bit position of the most significant bit.
167 * Note: this is 1-based! It's more useful this way, and returns 0 when
170 static inline unsigned
171 msb_pos(uint32_t mask)
181 // Avoid conflict with other popcount()s.
183 my_popcount(uint32_t x)
186 #if defined(HAVE___BUILTIN_POPCOUNT)
187 count = __builtin_popcount(x);
189 for (count = 0; x; count++)
196 map_file(FILE *file, char **string_out, size_t *size_out);
199 unmap_file(char *string, size_t size);
201 #define ARRAY_SIZE(arr) ((sizeof(arr) / sizeof(*(arr))))
203 #define MIN(a, b) ((a) < (b) ? (a) : (b))
204 #define MIN3(a, b, c) MIN(MIN((a), (b)), (c))
205 #define MAX(a, b) ((a) > (b) ? (a) : (b))
206 #define MAX3(a, b, c) MAX(MAX((a), (b)), (c))
208 /* Round up @a so it's divisible by @b. */
209 #define ROUNDUP(a, b) (((a) + (b) - 1) / (b) * (b))
211 #if defined(HAVE_SECURE_GETENV)
212 # define secure_getenv secure_getenv
213 #elif defined(HAVE___SECURE_GETENV)
214 # define secure_getenv __secure_getenv
216 # define secure_getenv getenv
219 #if defined(HAVE___BUILTIN_EXPECT)
220 # define likely(x) __builtin_expect(!!(x), 1)
221 # define unlikely(x) __builtin_expect(!!(x), 0)
223 # define likely(x) (x)
224 # define unlikely(x) (x)
227 /* Compiler Attributes */
229 #if defined(__GNUC__) && (__GNUC__ >= 4) && !defined(__CYGWIN__)
230 # define XKB_EXPORT __attribute__((visibility("default")))
231 #elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
232 # define XKB_EXPORT __global
233 #else /* not gcc >= 4 and not Sun Studio >= 8 */
237 #if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 203)
238 # define ATTR_PRINTF(x,y) __attribute__((__format__(__printf__, x, y)))
239 #else /* not gcc >= 2.3 */
240 # define ATTR_PRINTF(x,y)
243 #if (defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 205)) \
244 || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
245 # define ATTR_NORETURN __attribute__((__noreturn__))
247 # define ATTR_NORETURN
250 #if (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 296)
251 #define ATTR_MALLOC __attribute__((__malloc__))
256 #if defined(__GNUC__) && (__GNUC__ >= 4)
257 # define ATTR_NULL_SENTINEL __attribute__((__sentinel__))
259 # define ATTR_NULL_SENTINEL
260 #endif /* GNUC >= 4 */
262 #if (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 295)
263 #define ATTR_PACKED __attribute__((__packed__))