[pve-devel] [PATCH common v5 1/7] tools: add check_list_empty function

[Aaron Lauterer]

In some situations we don't want a total empty list. I opted for a
dedicated function instead of integrating it as error in the
`split_list` function. It is used in many places and the potential
fallout from unintended behavior changes is too big.

Signed-off-by: Aaron Lauterer <a.lauterer at proxmox.com>
---
changes since:
v4: rename to `list_is_empty` and switch the return values
v3: none
v2: newly added

 src/PVE/Tools.pm | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/PVE/Tools.pm b/src/PVE/Tools.pm
index bd305bd..36ffb05 100644
--- a/src/PVE/Tools.pm
+++ b/src/PVE/Tools.pm
@@ -718,6 +718,14 @@ sub split_list {
     return @data;
 }
 
+sub list_is_empty {
+    my ($list) = @_;
+    if (scalar(PVE::Tools::split_list($list)) < 1) {
+	return 1;
+    }
+    return 0;
+}
+
 sub trim {
     my $txt = shift;
 
-- 
2.39.5