#ifndef GIT_COMPAT_UTIL_H #define GIT_COMPAT_UTIL_H #ifndef FLEX_ARRAY #if defined(__GNUC__) && (__GNUC__ < 3) #define FLEX_ARRAY 0 #else #define FLEX_ARRAY /* empty */ #endif #endif #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) #include <unistd.h> #include <stdio.h> #include <sys/stat.h> #include <fcntl.h> #include <stddef.h> #include <stdlib.h> #include <stdarg.h> #include <string.h> #include <errno.h> #include <limits.h> #include <sys/param.h> #include <netinet/in.h> #include <sys/types.h> #include <dirent.h> #ifdef __GNUC__ #define NORETURN __attribute__((__noreturn__)) #else #define NORETURN #ifndef __attribute__ #define __attribute__(x) #endif #endif /* General helper functions */ extern void usage(const char *err) NORETURN; extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); extern void set_usage_routine(void (*routine)(const char *err) NORETURN); extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); extern void set_error_routine(void (*routine)(const char *err, va_list params)); #ifdef NO_MMAP #ifndef PROT_READ #define PROT_READ 1 #define PROT_WRITE 2 #define MAP_PRIVATE 1 #define MAP_FAILED ((void*)-1) #endif #define mmap gitfakemmap #define munmap gitfakemunmap extern void *gitfakemmap(void *start, size_t length, int prot , int flags, int fd, off_t offset); extern int gitfakemunmap(void *start, size_t length); #else /* NO_MMAP */ #include <sys/mman.h> #endif /* NO_MMAP */ #ifdef NO_SETENV #define setenv gitsetenv extern int gitsetenv(const char *, const char *, int); #endif #ifdef NO_UNSETENV #define unsetenv gitunsetenv extern void gitunsetenv(const char *); #endif #ifdef NO_STRCASESTR #define strcasestr gitstrcasestr extern char *gitstrcasestr(const char *haystack, const char *needle); #endif #ifdef NO_STRLCPY #define strlcpy gitstrlcpy extern size_t gitstrlcpy(char *, const char *, size_t); #endif static inline void *xmalloc(size_t size) { void *ret = malloc(size); if (!ret && !size) ret = malloc(1); if (!ret) die("Out of memory, malloc failed"); return ret; } static inline void *xrealloc(void *ptr, size_t size) { void *ret = realloc(ptr, size); if (!ret && !size) ret = realloc(ptr, 1); if (!ret) die("Out of memory, realloc failed"); return ret; } static inline void *xcalloc(size_t nmemb, size_t size) { void *ret = calloc(nmemb, size); if (!ret && (!nmemb || !size)) ret = calloc(1, 1); if (!ret) die("Out of memory, calloc failed"); return ret; } static inline ssize_t xread(int fd, void *buf, size_t len) { ssize_t nr; while (1) { nr = read(fd, buf, len); if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) continue; return nr; } } static inline ssize_t xwrite(int fd, const void *buf, size_t len) { ssize_t nr; while (1) { nr = write(fd, buf, len); if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) continue; return nr; } } /* Sane ctype - no locale, and works with signed chars */ #undef isspace #undef isdigit #undef isalpha #undef isalnum #undef tolower #undef toupper extern unsigned char sane_ctype[256]; #define GIT_SPACE 0x01 #define GIT_DIGIT 0x02 #define GIT_ALPHA 0x04 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) #define isspace(x) sane_istest(x,GIT_SPACE) #define isdigit(x) sane_istest(x,GIT_DIGIT) #define isalpha(x) sane_istest(x,GIT_ALPHA) #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) #define tolower(x) sane_case((unsigned char)(x), 0x20) #define toupper(x) sane_case((unsigned char)(x), 0) static inline int sane_case(int x, int high) { if (sane_istest(x, GIT_ALPHA)) x = (x & ~0x20) | high; return x; } #ifndef MAXPATHLEN #define MAXPATHLEN 256 #endif #endif