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ant/include/compat.h
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compat.h
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#ifndef ANT_COMPAT_H
#define ANT_COMPAT_H
#if defined(__linux__) && !defined(_GNU_SOURCE)
#define _GNU_SOURCE
#endif
#include <time.h>
#include <string.h>
#include <stdlib.h>
#ifndef PATH_MAX
#ifdef _WIN32
#define PATH_MAX MAX_PATH
#else
#define PATH_MAX 4096
#endif
#endif
#ifdef _WIN32
#include <winsock2.h>
#include <windows.h>
#include <io.h>
#include <direct.h>
static inline char *compat_realpath(const char *path, char *resolved) {
char *allocated = NULL;
if (resolved == NULL) {
resolved = malloc(MAX_PATH);
if (resolved == NULL) return NULL;
allocated = resolved;
}
DWORD len = GetFullPathNameA(path, MAX_PATH, resolved, NULL);
if (len == 0 || len > MAX_PATH) {
if (allocated != NULL) free(allocated);
return NULL;
}
DWORD attr = GetFileAttributesA(resolved);
if (attr == INVALID_FILE_ATTRIBUTES) {
if (allocated != NULL) free(allocated);
return NULL;
}
return resolved;
}
static inline time_t compat_timegm(struct tm *tm) { return _mkgmtime(tm); }
static inline int compat_usleep(unsigned int us) { Sleep((us + 999) / 1000); return 0; }
static inline unsigned int compat_sleep(unsigned int seconds) { Sleep(seconds * 1000); return 0; }
#include <process.h>
#define getpid _getpid
#ifndef getppid
#define getppid _getpid
#endif
struct timeval {
long tv_sec;
long tv_usec;
};
static inline int compat_gettimeofday(struct timeval *tv, void *tz) {
(void)tz;
FILETIME ft;
ULARGE_INTEGER ull;
GetSystemTimeAsFileTime(&ft);
ull.LowPart = ft.dwLowDateTime;
ull.HighPart = ft.dwHighDateTime;
ull.QuadPart -= 116444736000000000ULL;
tv->tv_sec = (long)(ull.QuadPart / 10000000);
tv->tv_usec = (long)((ull.QuadPart % 10000000) / 10);
return 0;
}
#define gettimeofday compat_gettimeofday
static inline char *compat_strndup(const char *s, size_t n) {
size_t len = strnlen(s, n);
char *dup = malloc(len + 1);
if (dup) { memcpy(dup, s, len); dup[len] = '\0'; }
return dup;
}
static inline void *compat_memmem(const void *haystack, size_t h_len, const void *needle, size_t n_len) {
const char *h = haystack;
const char *last = h + h_len - n_len;
const char *n = needle;
char first;
if (n_len == 0) return (void *)h;
if (h_len < n_len) return NULL;
if (n_len == 1) return memchr(haystack, *n, h_len);
first = *n++;
for (; h <= last; h++)
if (*h == first && !memcmp(h + 1, n, n_len - 1)) return (void *)h;
return NULL;
}
static inline char *compat_basename(char *path) {
if (!path || !*path) return ".";
char *p = path + strlen(path) - 1;
while (p > path && (*p == '/' || *p == '\\')) *p-- = '\0';
while (p > path && *p != '/' && *p != '\\') p--;
return (p > path) ? p + 1 : path;
}
static inline char *compat_dirname(char *path) {
if (!path || !*path) return ".";
char *p = path + strlen(path) - 1;
while (p > path && (*p == '/' || *p == '\\')) *p-- = '\0';
while (p > path && *p != '/' && *p != '\\') p--;
if (p == path) {
if (*p == '/' || *p == '\\') return (*p == '/') ? "/" : "\\";
return ".";
}
*p = '\0';
return path;
}
static inline int compat_setenv(const char *name, const char *value, int overwrite) {
if (!overwrite && getenv(name) != NULL) return 0;
return _putenv_s(name, value);
}
static inline int compat_unsetenv(const char *name) {
return _putenv_s(name, "");
}
#define realpath compat_realpath
#define timegm compat_timegm
#define usleep compat_usleep
#define sleep compat_sleep
#define strndup compat_strndup
#define memmem compat_memmem
#define basename compat_basename
#define dirname compat_dirname
#define setenv compat_setenv
#define unsetenv compat_unsetenv
typedef unsigned int useconds_t;
typedef unsigned int uid_t;
typedef unsigned int gid_t;
#ifndef S_IFLNK
#define S_IFLNK 0120000
#endif
#ifndef S_ISLNK
#define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
#endif
#else
#include <unistd.h>
#include <libgen.h>
#include <sys/time.h>
#endif
#endif

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