X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=git-compat-util.h;h=0272d043d0b82dc6ad0ff4836fe8db8ed1e1d960;hb=ddaf73141c03aeaab5e8cf5fadaf8b7ebad7955b;hp=4185b12741f802842f2aebc128c61051db65c13d;hpb=4050c0df8ec7043315e2192695de432875239775;p=git.git

diff --git a/git-compat-util.h b/git-compat-util.h
index 4185b1274..0272d043d 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -1,6 +1,16 @@
 #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>
@@ -16,6 +26,13 @@
 #include <sys/types.h>
 #include <dirent.h>
 
+/* On most systems <limits.h> would have given us this, but
+ * not on some systems (e.g. GNU/Hurd).
+ */
+#ifndef PATH_MAX
+#define PATH_MAX 4096
+#endif
+
 #ifdef __GNUC__
 #define NORETURN __attribute__((__noreturn__))
 #else
@@ -30,6 +47,10 @@ 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
@@ -55,22 +76,47 @@ extern int gitfakemunmap(void *start, size_t length);
 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 char* xstrdup(const char *str)
+{
+	char *ret = strdup(str);
+	if (!ret)
+		die("Out of memory, strdup failed");
+	return ret;
+}
+
 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");
+#ifdef XMALLOC_POISON
+	memset(ret, 0xA5, size);
+#endif
 	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;
@@ -79,11 +125,42 @@ static inline void *xrealloc(void *ptr, size_t size)
 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;
+	}
+}
+
+static inline int has_extension(const char *filename, const char *ext)
+{
+	size_t len = strlen(filename);
+	size_t extlen = strlen(ext);
+	return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
+}
+
 /* Sane ctype - no locale, and works with signed chars */
 #undef isspace
 #undef isdigit