#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>
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);
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