1 #ifndef GIT_COMPAT_UTIL_H
2 #define GIT_COMPAT_UTIL_H
4 #define _FILE_OFFSET_BITS 64
8 * See if our compiler is known to support flexible array members.
10 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
11 # define FLEX_ARRAY /* empty */
12 #elif defined(__GNUC__)
14 # define FLEX_ARRAY /* empty */
16 # define FLEX_ARRAY 0 /* older GNU extension */
21 * Otherwise, default to safer but a bit wasteful traditional style
28 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
31 #define TYPEOF(x) (__typeof__(x))
36 #define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits))))
37 #define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */
39 /* Approximation of the length of the decimal representation of this type. */
40 #define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1)
50 #include <sys/statfs.h>
59 #include <sys/param.h>
60 #include <sys/types.h>
71 #include <sys/socket.h>
72 #include <sys/ioctl.h>
73 #ifndef NO_SYS_SELECT_H
74 #include <sys/select.h>
76 #include <netinet/in.h>
77 #include <netinet/tcp.h>
78 #include <arpa/inet.h>
82 #include "../../../include/linux/magic.h"
84 #include <sys/ttydefaults.h>
90 extern const char *graph_line;
91 extern const char *graph_dotted_line;
93 /* On most systems <limits.h> would have given us this, but
94 * not on some systems (e.g. GNU/Hurd).
101 #define PRIuMAX "llu"
116 #ifndef STRIP_EXTENSION
117 #define STRIP_EXTENSION ""
120 #ifndef has_dos_drive_prefix
121 #define has_dos_drive_prefix(path) 0
125 #define is_dir_sep(c) ((c) == '/')
129 #define NORETURN __attribute__((__noreturn__))
132 #ifndef __attribute__
133 #define __attribute__(x)
137 /* General helper functions */
138 extern void usage(const char *err) NORETURN;
139 extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
140 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
141 extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
143 #include "../../../include/linux/stringify.h"
145 #define DIE_IF(cnd) \
147 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \
148 __stringify(cnd) "\n"); \
152 extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
154 extern int prefixcmp(const char *str, const char *prefix);
156 static inline const char *skip_prefix(const char *str, const char *prefix)
158 size_t len = strlen(prefix);
159 return strncmp(str, prefix, len) ? NULL : str + len;
162 #ifdef __GLIBC_PREREQ
163 #if __GLIBC_PREREQ(2, 1)
164 #define HAVE_STRCHRNUL
168 #ifndef HAVE_STRCHRNUL
169 #define strchrnul gitstrchrnul
170 static inline char *gitstrchrnul(const char *s, int c)
172 while (*s && *s != c)
181 extern char *xstrdup(const char *str);
182 extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
185 static inline void *zalloc(size_t size)
187 return calloc(1, size);
190 static inline int has_extension(const char *filename, const char *ext)
192 size_t len = strlen(filename);
193 size_t extlen = strlen(ext);
195 return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
198 /* Sane ctype - no locale, and works with signed chars */
209 extern unsigned char sane_ctype[256];
210 #define GIT_SPACE 0x01
211 #define GIT_DIGIT 0x02
212 #define GIT_ALPHA 0x04
213 #define GIT_GLOB_SPECIAL 0x08
214 #define GIT_REGEX_SPECIAL 0x10
215 #define GIT_PRINT_EXTRA 0x20
216 #define GIT_PRINT 0x3E
217 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
218 #define isascii(x) (((x) & ~0x7f) == 0)
219 #define isspace(x) sane_istest(x,GIT_SPACE)
220 #define isdigit(x) sane_istest(x,GIT_DIGIT)
221 #define isxdigit(x) \
222 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
223 #define isalpha(x) sane_istest(x,GIT_ALPHA)
224 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
225 #define isprint(x) sane_istest(x,GIT_PRINT)
226 #define tolower(x) sane_case((unsigned char)(x), 0x20)
227 #define toupper(x) sane_case((unsigned char)(x), 0)
229 static inline int sane_case(int x, int high)
231 if (sane_istest(x, GIT_ALPHA))
232 x = (x & ~0x20) | high;
236 #ifndef DIR_HAS_BSD_GROUP_SEMANTICS
237 # define FORCE_DIR_SET_GID S_ISGID
239 # define FORCE_DIR_SET_GID 0
244 #define ST_CTIME_NSEC(st) 0
245 #define ST_MTIME_NSEC(st) 0
247 #ifdef USE_ST_TIMESPEC
248 #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctimespec.tv_nsec))
249 #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtimespec.tv_nsec))
251 #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctim.tv_nsec))
252 #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtim.tv_nsec))
256 int mkdir_p(char *path, mode_t mode);
257 int copyfile(const char *from, const char *to);
259 s64 perf_atoll(const char *str);
260 char **argv_split(const char *str, int *argcp);
261 void argv_free(char **argv);
262 bool strglobmatch(const char *str, const char *pat);
263 bool strlazymatch(const char *str, const char *pat);
264 unsigned long convert_unit(unsigned long value, char *unit);
270 static inline bool is_exit_key(int key)
273 if (key == CTRL('c') || key == ESC)
280 #define STR(x) _STR(x)