[git commit] ls: make -v and -X actually work as intended

[Denys Vlasenko]

commit: http://git.busybox.net/busybox/commit/?id=f194cc1f3376a26158940d91d0179a3e70233e10
branch: http://git.busybox.net/busybox/commit/?id=refs/heads/master

function                                             old     new   delta
strverscmp                                             -     236    +236
sortcmp                                              186     254     +68
static.result_type                                     -      60     +60
static.next_state                                     12      16      +4

Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
 coreutils/ls.c |   22 +++++++++++++++-------
 1 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/coreutils/ls.c b/coreutils/ls.c
index dec0f85..ee73473 100644
--- a/coreutils/ls.c
+++ b/coreutils/ls.c
@@ -874,19 +874,27 @@ static int sortcmp(const void *a, const void *b)
 	// instead of branch forest
 	if (sort_opts == SORT_SIZE) {
 		dif = (d2->dn_size - d1->dn_size);
-	} else if (sort_opts == SORT_ATIME) {
+	} else
+	if (sort_opts == SORT_ATIME) {
 		dif = (d2->dn_atime - d1->dn_atime);
-	} else if (sort_opts == SORT_CTIME) {
+	} else
+	if (sort_opts == SORT_CTIME) {
 		dif = (d2->dn_ctime - d1->dn_ctime);
-	} else if (sort_opts == SORT_MTIME) {
+	} else
+	if (sort_opts == SORT_MTIME) {
 		dif = (d2->dn_mtime - d1->dn_mtime);
-	} else if (sort_opts == SORT_DIR) {
+	} else
+	if (sort_opts == SORT_DIR) {
 		dif = S_ISDIR(d2->dn_mode) - S_ISDIR(d1->dn_mode);
-		/* } else if (sort_opts == SORT_VERSION) { */
-		/* } else if (sort_opts == SORT_EXT) { */
+	} else
+	if (sort_opts == SORT_VERSION) {
+		dif = strverscmp(d1->name, d2->name);
+	} else
+	if (sort_opts == SORT_EXT) {
+		dif = strcmp(strchrnul(d1->name, '.'), strchrnul(d2->name, '.'));
 	}
 	if (dif == 0) {
-		/* sort by name, or tie_breaker for other sorts */
+		/* sort by name, use as tie breaker for other sorts */
 		if (ENABLE_LOCALE_SUPPORT)
 			dif = strcoll(d1->name, d2->name);
 		else
-- 
1.7.3.4