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Fix PHP warnings #4278

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Fix PHP warnings #4278

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@dregad dregad commented May 1, 2024

Fixes #4276

Includes a fix for another PHP warning I did not open an issue for.

dregad added 4 commits May 1, 2024 11:00
E_WARNING: Trying to access array offset on value of type bool
./inc/Ui/Recent.php(165)
E_WARNING: Undefined array key 3 in ./inc/media.php(1700)
E_WARNING: Trying to access array offset on value of type null in ./inc/media.php(1700)

This happens when the media manager is called with ns parameter set to
a value higher than the last namespace defined in the wiki.

Fixes dokuwiki#4276
When the media manager is called with ns parameter set to a value higher
than the last namespace defined in the wiki, the non-existing namespace
is not added to the hierarchy.

This behavior is not consistent with what happens when the namespace's
name is lower. In this case, an entry is inserted in the tree at the
appropriate location.

Fixed by appending the temporary namespace at the end of the tree if it
was not inserted by the search loop.

Fixes dokuwiki#4276
if (
$pos >= count($data) ||
($data[$pos]['level'] <= $level + 1 && Sort::strcmp($data[$pos]['id'], $tmp_ns) > 0)
) {
array_splice($data, $pos, 0, [['level' => $level + 1, 'id' => $tmp_ns, 'open' => 'true']]);
$insert = true;
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Comment by @fiwswe, originally posted in dregad@de301a3#r141568139

You might want to reset $insert = false; here for the next foreach loop iteration? But I'm not very sure what this code is really trying to do, so this might be wrong.

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Unless I'm missing something, I believe this is not necessary because the foreach processes the elements of the "current namespace" (e.g. aaa:bbb:ccc -> aaa, bbb and ccc), and the while loop checks for each element if it's present in the media directory's structure.

Therefore, if we start inserting an entry in $data at any point in that second loop because it was not found (say, aaa, then by definition nothing exists below that newly created tree branch, so we will keep inserting until we reach the end of the foreach loop (bbband then ccc).

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Ok, if that is what this code is doing, your explanation makes sense.

PS. Sorry about commenting in the wrong repository. I was reacting to a GitHub notification about a change and failed to check.

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Undefined array key 3 in ./inc/media.php on line 1700
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