[PATCH 1/2] Add xmemdup that duplicates a block of memory, and NUL terminates it.

[Pierre Habouzit <madcoder@debian.org>]

Implement xstrndup using it.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
---
 git-compat-util.h |   17 +++++++++--------
 1 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/git-compat-util.h b/git-compat-util.h
index 1bfbdeb..429b0a3 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -211,19 +211,20 @@ static inline void *xmalloc(size_t size)
 	return ret;
 }
 
-static inline char *xstrndup(const char *str, size_t len)
+static inline void *xmemdup(const void *data, size_t len)
 {
-	char *p;
-
-	p = memchr(str, '\0', len);
-	if (p)
-		len = p - str;
-	p = xmalloc(len + 1);
-	memcpy(p, str, len);
+	char *p = xmalloc(len + 1);
+	memcpy(p, data, len);
 	p[len] = '\0';
 	return p;
 }
 
+static inline char *xstrndup(const char *str, size_t len)
+{
+	char *p = memchr(str, '\0', len);
+	return xmemdup(str, p ? p - str : len);
+}
+
 static inline void *xrealloc(void *ptr, size_t size)
 {
 	void *ret = realloc(ptr, size);
-- 
1.5.3.1