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AK: Add LexicalPath::is_child_of

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This API checks whether this path is a child of (or the same as) another
path.
This commit is contained in:
kleines Filmröllchen 2022-06-24 00:40:21 +02:00 • committed by Linus Groh
parent 4625f7aab5
commit 16ca41ec10
3 changed files with 58 additions and 0 deletions
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16
AK/LexicalPath.cpp
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@ -72,6 +72,22 @@ bool LexicalPath::has_extension(StringView extension) const
return m_string.ends_with(extension, CaseSensitivity::CaseInsensitive);
}
bool LexicalPath::is_child_of(LexicalPath const& possible_parent) const
{
// Any relative path is a child of an absolute path.
if (!this->is_absolute() && possible_parent.is_absolute())
return true;
// An absolute path can't meaningfully be a child of a relative path.
if (this->is_absolute() && !possible_parent.is_absolute())
return false;
// Two relative paths and two absolute paths can be meaningfully compared.
if (possible_parent.parts_view().size() > this->parts_view().size())
return false;
auto common_parts_with_parent = this->parts_view().span().trim(possible_parent.parts_view().size());
return common_parts_with_parent == possible_parent.parts_view().span();
}
DeprecatedString LexicalPath::canonicalized_path(DeprecatedString path)
{
if (path.is_null())