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git.ipfire.org Git - thirdparty/git.git/blob - git-compat-util.h
1 #ifndef GIT_COMPAT_UTIL_H
2 #define GIT_COMPAT_UTIL_H
14 #include <sys/param.h>
15 #include <netinet/in.h>
16 #include <sys/types.h>
20 #define NORETURN __attribute__((__noreturn__))
24 #define __attribute__(x)
28 /* General helper functions */
29 extern void usage(const char *err
) NORETURN
;
30 extern void die(const char *err
, ...) NORETURN
__attribute__((format (printf
, 1, 2)));
31 extern int error(const char *err
, ...) __attribute__((format (printf
, 1, 2)));
39 #define MAP_FAILED ((void*)-1)
42 #define mmap gitfakemmap
43 #define munmap gitfakemunmap
44 extern void *gitfakemmap(void *start
, size_t length
, int prot
, int flags
, int fd
, off_t offset
);
45 extern int gitfakemunmap(void *start
, size_t length
);
54 #define setenv gitsetenv
55 extern int gitsetenv(const char *, const char *, int);
59 #define strcasestr gitstrcasestr
60 extern char *gitstrcasestr(const char *haystack
, const char *needle
);
63 static inline void *xmalloc(size_t size
)
65 void *ret
= malloc(size
);
69 die("Out of memory, malloc failed");
73 static inline void *xrealloc(void *ptr
, size_t size
)
75 void *ret
= realloc(ptr
, size
);
77 ret
= realloc(ptr
, 1);
79 die("Out of memory, realloc failed");
83 static inline void *xcalloc(size_t nmemb
, size_t size
)
85 void *ret
= calloc(nmemb
, size
);
86 if (!ret
&& (!nmemb
|| !size
))
89 die("Out of memory, calloc failed");
93 static inline ssize_t
xread(int fd
, void *buf
, size_t len
)
97 nr
= read(fd
, buf
, len
);
98 if ((nr
< 0) && (errno
== EAGAIN
|| errno
== EINTR
))
104 static inline ssize_t
xwrite(int fd
, const void *buf
, size_t len
)
108 nr
= write(fd
, buf
, len
);
109 if ((nr
< 0) && (errno
== EAGAIN
|| errno
== EINTR
))
115 /* Sane ctype - no locale, and works with signed chars */
122 extern unsigned char sane_ctype
[256];
123 #define GIT_SPACE 0x01
124 #define GIT_DIGIT 0x02
125 #define GIT_ALPHA 0x04
126 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
127 #define isspace(x) sane_istest(x,GIT_SPACE)
128 #define isdigit(x) sane_istest(x,GIT_DIGIT)
129 #define isalpha(x) sane_istest(x,GIT_ALPHA)
130 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
131 #define tolower(x) sane_case((unsigned char)(x), 0x20)
132 #define toupper(x) sane_case((unsigned char)(x), 0)
134 static inline int sane_case(int x
, int high
)
136 if (sane_istest(x
, GIT_ALPHA
))
137 x
= (x
& ~0x20) | high
;
142 #define MAXPATHLEN 256