Use dir_iterator to traverse through remove_subtree()'s directory tree,
avoiding the need for recursive calls to readdir(). Simplify
remove_subtree()'s code.
A conversion similar in purpose was previously done at 46d092a
("for_each_reflog(): reimplement using iterators", 2016-05-21).
Signed-off-by: Daniel Ferreira <bnmvco@xxxxxxxxx>
---
This is a second-version patch of the Google Summer of Code microproject for
refactoring recursive readdir() calls to use dir_iterator instead. v1 can be
found in:
https://public-inbox.org/git/CAGZ79kZwT-9mHTiOJ5CEjk2wDFkn6+NcogjX0=vjhsAh16ANYg@xxxxxxxxxxxxxx/T/#mae023e7a7d7626f00e0923833c4359f5af493730
Additionally, for debugging purposes I turned remove_subtree() into a no-op
and ran git tests. Some failures were at:
* t2000-checkout-cache-clash.sh
* t2003-checkout-cache-mkdir.sh
If you guys could check those files out and warn me if any additional tests
would be welcome, please let me know.
Thanks.
entry.c | 28 +++++++---------------------
1 file changed, 7 insertions(+), 21 deletions(-)
diff --git a/entry.c b/entry.c
index c6eea240b..3cb92592d 100644
--- a/entry.c
+++ b/entry.c
@@ -2,6 +2,8 @@
#include "blob.h"
#include "dir.h"
#include "streaming.h"
+#include "iterator.h"
+#include "dir-iterator.h"
static void create_directories(const char *path, int path_len,
const struct checkout *state)
@@ -46,29 +48,13 @@ static void create_directories(const char *path, int path_len,
static void remove_subtree(struct strbuf *path)
{
- DIR *dir = opendir(path->buf);
- struct dirent *de;
- int origlen = path->len;
-
- if (!dir)
- die_errno("cannot opendir '%s'", path->buf);
- while ((de = readdir(dir)) != NULL) {
- struct stat st;
-
- if (is_dot_or_dotdot(de->d_name))
- continue;
-
- strbuf_addch(path, '/');
- strbuf_addstr(path, de->d_name);
- if (lstat(path->buf, &st))
- die_errno("cannot lstat '%s'", path->buf);
- if (S_ISDIR(st.st_mode))
- remove_subtree(path);
- else if (unlink(path->buf))
+ struct dir_iterator *diter = dir_iterator_begin(path->buf);
+
+ while (dir_iterator_advance(diter) == ITER_OK) {
+ if (unlink(diter->path.buf))
die_errno("cannot unlink '%s'", path->buf);
- strbuf_setlen(path, origlen);
}
- closedir(dir);
+
if (rmdir(path->buf))
die_errno("cannot rmdir '%s'", path->buf);
}
--
2.12.1.433.g82305b74f.dirty