mirror/ git
1
0
Fork 0
mirror of https://github.com/git/git.git synced 2024-05-05 22:16:12 +02:00
Code

git-compat-util: add xstrdup_or_null helper 

It's a common idiom to duplicate a string if it is non-NULL,
or pass a literal NULL through. This is already a one-liner
in C, but you do have to repeat the name of the string
twice. So if there's a function call, you must write:

  const char *x = some_fun(...);
  return x ? xstrdup(x) : NULL;

instead of (with this patch) just:

  return xstrdup_or_null(some_fun(...));

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2015-01-12 20:57:37 -05:00 committed by Junio C Hamano
parent 1da1e07c83
commit d64ea0f83b
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
git-compat-util.h
View File

@ -629,6 +629,11 @@ extern char *xgetcwd(void);
#define REALLOC_ARRAY(x, alloc) (x) = xrealloc((x), (alloc) * sizeof(*(x)))
static inline char *xstrdup_or_null(const char *str)
{
return str ? xstrdup(str) : NULL;
}
static inline size_t xsize_t(off_t len)
{
if (len > (size_t) len)