FileSystemPath: Add a has_extension() helper.

This code:

    if (path.string().to_lowercase().ends_with(".foo"))

Can now be written as:

    if (path.has_extension(".foo"))

2 files changed, 8 insertions, 0 deletions

diff --git a/AK/FileSystemPath.cpp b/AK/FileSystemPath.cpp
index 971bbf52bd..e094c1de3d 100644
--- a/AK/FileSystemPath.cpp
+++ b/AK/FileSystemPath.cpp
@@ -45,5 +45,11 @@ bool FileSystemPath::canonicalize(bool resolve_symbolic_links)
     return true;
 }
 
+bool FileSystemPath::has_extension(StringView extension) const
+{
+    // FIXME: This is inefficient, expand StringView with enough functionality that we don't need to copy strings here.
+    String extension_string = extension;
+    return m_string.to_lowercase().ends_with(extension_string.to_lowercase());
 }
 
+}
diff --git a/AK/FileSystemPath.h b/AK/FileSystemPath.h
index 64827157a7..3e56523269 100644
--- a/AK/FileSystemPath.h
+++ b/AK/FileSystemPath.h
@@ -16,6 +16,8 @@ public:
 
     const Vector<String>& parts() const { return m_parts; }
 
+    bool has_extension(StringView) const;
+
 private:
     bool canonicalize(bool resolve_symbolic_links = false);