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4050c0df JH |
1 | #ifndef GIT_COMPAT_UTIL_H |
2 | #define GIT_COMPAT_UTIL_H | |
3 | ||
4 | #include <unistd.h> | |
5 | #include <stdio.h> | |
6 | #include <sys/stat.h> | |
7 | #include <fcntl.h> | |
8 | #include <stddef.h> | |
9 | #include <stdlib.h> | |
10 | #include <stdarg.h> | |
11 | #include <string.h> | |
12 | #include <errno.h> | |
13 | #include <limits.h> | |
14 | #include <sys/param.h> | |
15 | #include <netinet/in.h> | |
16 | #include <sys/types.h> | |
17 | #include <dirent.h> | |
18 | ||
19 | #ifdef __GNUC__ | |
20 | #define NORETURN __attribute__((__noreturn__)) | |
21 | #else | |
22 | #define NORETURN | |
23 | #ifndef __attribute__ | |
24 | #define __attribute__(x) | |
25 | #endif | |
26 | #endif | |
27 | ||
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))); | |
32 | ||
33 | #ifdef NO_MMAP | |
34 | ||
35 | #ifndef PROT_READ | |
36 | #define PROT_READ 1 | |
37 | #define PROT_WRITE 2 | |
38 | #define MAP_PRIVATE 1 | |
39 | #define MAP_FAILED ((void*)-1) | |
40 | #endif | |
41 | ||
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); | |
46 | ||
47 | #else /* NO_MMAP */ | |
48 | ||
49 | #include <sys/mman.h> | |
50 | ||
51 | #endif /* NO_MMAP */ | |
52 | ||
53 | #ifdef NO_SETENV | |
54 | #define setenv gitsetenv | |
55 | extern int gitsetenv(const char *, const char *, int); | |
56 | #endif | |
57 | ||
58 | #ifdef NO_STRCASESTR | |
59 | #define strcasestr gitstrcasestr | |
60 | extern char *gitstrcasestr(const char *haystack, const char *needle); | |
61 | #endif | |
62 | ||
63 | static inline void *xmalloc(size_t size) | |
64 | { | |
65 | void *ret = malloc(size); | |
4e7a2ecc JH |
66 | if (!ret && !size) |
67 | ret = malloc(1); | |
4050c0df JH |
68 | if (!ret) |
69 | die("Out of memory, malloc failed"); | |
70 | return ret; | |
71 | } | |
72 | ||
73 | static inline void *xrealloc(void *ptr, size_t size) | |
74 | { | |
75 | void *ret = realloc(ptr, size); | |
4e7a2ecc JH |
76 | if (!ret && !size) |
77 | ret = realloc(ptr, 1); | |
4050c0df JH |
78 | if (!ret) |
79 | die("Out of memory, realloc failed"); | |
80 | return ret; | |
81 | } | |
82 | ||
83 | static inline void *xcalloc(size_t nmemb, size_t size) | |
84 | { | |
85 | void *ret = calloc(nmemb, size); | |
4e7a2ecc JH |
86 | if (!ret && (!nmemb || !size)) |
87 | ret = calloc(1, 1); | |
4050c0df JH |
88 | if (!ret) |
89 | die("Out of memory, calloc failed"); | |
90 | return ret; | |
91 | } | |
92 | ||
1c15afb9 JH |
93 | static inline ssize_t xread(int fd, void *buf, size_t len) |
94 | { | |
95 | ssize_t nr; | |
96 | while (1) { | |
97 | nr = read(fd, buf, len); | |
98 | if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) | |
99 | continue; | |
100 | return nr; | |
101 | } | |
102 | } | |
103 | ||
104 | static inline ssize_t xwrite(int fd, const void *buf, size_t len) | |
105 | { | |
106 | ssize_t nr; | |
107 | while (1) { | |
108 | nr = write(fd, buf, len); | |
109 | if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) | |
110 | continue; | |
111 | return nr; | |
112 | } | |
113 | } | |
114 | ||
4050c0df JH |
115 | /* Sane ctype - no locale, and works with signed chars */ |
116 | #undef isspace | |
117 | #undef isdigit | |
118 | #undef isalpha | |
119 | #undef isalnum | |
120 | #undef tolower | |
121 | #undef toupper | |
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) | |
133 | ||
134 | static inline int sane_case(int x, int high) | |
135 | { | |
136 | if (sane_istest(x, GIT_ALPHA)) | |
137 | x = (x & ~0x20) | high; | |
138 | return x; | |
139 | } | |
140 | ||
252fef71 MA |
141 | #ifndef MAXPATHLEN |
142 | #define MAXPATHLEN 256 | |
143 | #endif | |
4050c0df | 144 | #endif |