1 #ifndef GIT_COMPAT_UTIL_H
2 #define GIT_COMPAT_UTIL_H
5 #if defined(__GNUC__) && (__GNUC__ < 3)
8 #define FLEX_ARRAY /* empty */
12 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
14 #if !defined(__APPLE__) && !defined(__FreeBSD__)
15 #define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */
16 #define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */
31 #include <sys/param.h>
32 #include <sys/types.h>
40 #include <sys/socket.h>
43 #include <netinet/in.h>
44 #include <netinet/tcp.h>
45 #include <arpa/inet.h>
54 /* On most systems <limits.h> would have given us this, but
55 * not on some systems (e.g. GNU/Hurd).
62 #define NORETURN __attribute__((__noreturn__))
66 #define __attribute__(x)
70 /* General helper functions */
71 extern void usage(const char *err) NORETURN;
72 extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
73 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
74 extern void warn(const char *err, ...) __attribute__((format (printf, 1, 2)));
76 extern void set_usage_routine(void (*routine)(const char *err) NORETURN);
77 extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
78 extern void set_error_routine(void (*routine)(const char *err, va_list params));
79 extern void set_warn_routine(void (*routine)(const char *warn, va_list params));
87 #define MAP_FAILED ((void*)-1)
91 #define munmap git_munmap
92 extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
93 extern int git_munmap(void *start, size_t length);
102 #define setenv gitsetenv
103 extern int gitsetenv(const char *, const char *, int);
107 #define unsetenv gitunsetenv
108 extern void gitunsetenv(const char *);
112 #define strcasestr gitstrcasestr
113 extern char *gitstrcasestr(const char *haystack, const char *needle);
117 #define strlcpy gitstrlcpy
118 extern size_t gitstrlcpy(char *, const char *, size_t);
121 static inline char* xstrdup(const char *str)
123 char *ret = strdup(str);
125 die("Out of memory, strdup failed");
129 static inline void *xmalloc(size_t size)
131 void *ret = malloc(size);
135 die("Out of memory, malloc failed");
136 #ifdef XMALLOC_POISON
137 memset(ret, 0xA5, size);
142 static inline void *xrealloc(void *ptr, size_t size)
144 void *ret = realloc(ptr, size);
146 ret = realloc(ptr, 1);
148 die("Out of memory, realloc failed");
152 static inline void *xcalloc(size_t nmemb, size_t size)
154 void *ret = calloc(nmemb, size);
155 if (!ret && (!nmemb || !size))
158 die("Out of memory, calloc failed");
162 static inline ssize_t xread(int fd, void *buf, size_t len)
166 nr = read(fd, buf, len);
167 if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
173 static inline ssize_t xwrite(int fd, const void *buf, size_t len)
177 nr = write(fd, buf, len);
178 if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
184 static inline int has_extension(const char *filename, const char *ext)
186 size_t len = strlen(filename);
187 size_t extlen = strlen(ext);
188 return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
191 /* Sane ctype - no locale, and works with signed chars */
198 extern unsigned char sane_ctype[256];
199 #define GIT_SPACE 0x01
200 #define GIT_DIGIT 0x02
201 #define GIT_ALPHA 0x04
202 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
203 #define isspace(x) sane_istest(x,GIT_SPACE)
204 #define isdigit(x) sane_istest(x,GIT_DIGIT)
205 #define isalpha(x) sane_istest(x,GIT_ALPHA)
206 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
207 #define tolower(x) sane_case((unsigned char)(x), 0x20)
208 #define toupper(x) sane_case((unsigned char)(x), 0)
210 static inline int sane_case(int x, int high)
212 if (sane_istest(x, GIT_ALPHA))
213 x = (x & ~0x20) | high;