]>
Commit | Line | Data |
---|---|---|
4050c0df JH |
1 | #ifndef GIT_COMPAT_UTIL_H |
2 | #define GIT_COMPAT_UTIL_H | |
3 | ||
8f1d2e6f JH |
4 | #ifndef FLEX_ARRAY |
5 | #if defined(__GNUC__) && (__GNUC__ < 3) | |
6 | #define FLEX_ARRAY 0 | |
7 | #else | |
8 | #define FLEX_ARRAY /* empty */ | |
9 | #endif | |
10 | #endif | |
11 | ||
b4f2a6ac JH |
12 | #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) |
13 | ||
4050c0df JH |
14 | #include <unistd.h> |
15 | #include <stdio.h> | |
16 | #include <sys/stat.h> | |
17 | #include <fcntl.h> | |
18 | #include <stddef.h> | |
19 | #include <stdlib.h> | |
20 | #include <stdarg.h> | |
21 | #include <string.h> | |
22 | #include <errno.h> | |
23 | #include <limits.h> | |
24 | #include <sys/param.h> | |
25 | #include <netinet/in.h> | |
26 | #include <sys/types.h> | |
27 | #include <dirent.h> | |
28 | ||
29 | #ifdef __GNUC__ | |
30 | #define NORETURN __attribute__((__noreturn__)) | |
31 | #else | |
32 | #define NORETURN | |
33 | #ifndef __attribute__ | |
34 | #define __attribute__(x) | |
35 | #endif | |
36 | #endif | |
37 | ||
38 | /* General helper functions */ | |
39 | extern void usage(const char *err) NORETURN; | |
40 | extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); | |
41 | extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); | |
42 | ||
39a3f5ea PB |
43 | extern void set_usage_routine(void (*routine)(const char *err) NORETURN); |
44 | extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); | |
45 | extern void set_error_routine(void (*routine)(const char *err, va_list params)); | |
46 | ||
4050c0df JH |
47 | #ifdef NO_MMAP |
48 | ||
49 | #ifndef PROT_READ | |
50 | #define PROT_READ 1 | |
51 | #define PROT_WRITE 2 | |
52 | #define MAP_PRIVATE 1 | |
53 | #define MAP_FAILED ((void*)-1) | |
54 | #endif | |
55 | ||
56 | #define mmap gitfakemmap | |
57 | #define munmap gitfakemunmap | |
58 | extern void *gitfakemmap(void *start, size_t length, int prot , int flags, int fd, off_t offset); | |
59 | extern int gitfakemunmap(void *start, size_t length); | |
60 | ||
61 | #else /* NO_MMAP */ | |
62 | ||
63 | #include <sys/mman.h> | |
64 | ||
65 | #endif /* NO_MMAP */ | |
66 | ||
67 | #ifdef NO_SETENV | |
68 | #define setenv gitsetenv | |
69 | extern int gitsetenv(const char *, const char *, int); | |
70 | #endif | |
71 | ||
731043fd JR |
72 | #ifdef NO_UNSETENV |
73 | #define unsetenv gitunsetenv | |
74 | extern void gitunsetenv(const char *); | |
75 | #endif | |
76 | ||
4050c0df JH |
77 | #ifdef NO_STRCASESTR |
78 | #define strcasestr gitstrcasestr | |
79 | extern char *gitstrcasestr(const char *haystack, const char *needle); | |
80 | #endif | |
81 | ||
817151e6 PE |
82 | #ifdef NO_STRLCPY |
83 | #define strlcpy gitstrlcpy | |
84 | extern size_t gitstrlcpy(char *, const char *, size_t); | |
85 | #endif | |
86 | ||
4050c0df JH |
87 | static inline void *xmalloc(size_t size) |
88 | { | |
89 | void *ret = malloc(size); | |
4e7a2ecc JH |
90 | if (!ret && !size) |
91 | ret = malloc(1); | |
4050c0df JH |
92 | if (!ret) |
93 | die("Out of memory, malloc failed"); | |
94 | return ret; | |
95 | } | |
96 | ||
97 | static inline void *xrealloc(void *ptr, size_t size) | |
98 | { | |
99 | void *ret = realloc(ptr, size); | |
4e7a2ecc JH |
100 | if (!ret && !size) |
101 | ret = realloc(ptr, 1); | |
4050c0df JH |
102 | if (!ret) |
103 | die("Out of memory, realloc failed"); | |
104 | return ret; | |
105 | } | |
106 | ||
107 | static inline void *xcalloc(size_t nmemb, size_t size) | |
108 | { | |
109 | void *ret = calloc(nmemb, size); | |
4e7a2ecc JH |
110 | if (!ret && (!nmemb || !size)) |
111 | ret = calloc(1, 1); | |
4050c0df JH |
112 | if (!ret) |
113 | die("Out of memory, calloc failed"); | |
114 | return ret; | |
115 | } | |
116 | ||
1c15afb9 JH |
117 | static inline ssize_t xread(int fd, void *buf, size_t len) |
118 | { | |
119 | ssize_t nr; | |
120 | while (1) { | |
121 | nr = read(fd, buf, len); | |
122 | if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) | |
123 | continue; | |
124 | return nr; | |
125 | } | |
126 | } | |
127 | ||
128 | static inline ssize_t xwrite(int fd, const void *buf, size_t len) | |
129 | { | |
130 | ssize_t nr; | |
131 | while (1) { | |
132 | nr = write(fd, buf, len); | |
133 | if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) | |
134 | continue; | |
135 | return nr; | |
136 | } | |
137 | } | |
138 | ||
4050c0df JH |
139 | /* Sane ctype - no locale, and works with signed chars */ |
140 | #undef isspace | |
141 | #undef isdigit | |
142 | #undef isalpha | |
143 | #undef isalnum | |
144 | #undef tolower | |
145 | #undef toupper | |
146 | extern unsigned char sane_ctype[256]; | |
147 | #define GIT_SPACE 0x01 | |
148 | #define GIT_DIGIT 0x02 | |
149 | #define GIT_ALPHA 0x04 | |
150 | #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) | |
151 | #define isspace(x) sane_istest(x,GIT_SPACE) | |
152 | #define isdigit(x) sane_istest(x,GIT_DIGIT) | |
153 | #define isalpha(x) sane_istest(x,GIT_ALPHA) | |
154 | #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) | |
155 | #define tolower(x) sane_case((unsigned char)(x), 0x20) | |
156 | #define toupper(x) sane_case((unsigned char)(x), 0) | |
157 | ||
158 | static inline int sane_case(int x, int high) | |
159 | { | |
160 | if (sane_istest(x, GIT_ALPHA)) | |
161 | x = (x & ~0x20) | high; | |
162 | return x; | |
163 | } | |
164 | ||
252fef71 MA |
165 | #ifndef MAXPATHLEN |
166 | #define MAXPATHLEN 256 | |
167 | #endif | |
4050c0df | 168 | #endif |