9962c50b54
Factors out utility function "does the path contain any hidden file/folder
components?" function out of innards of UI code (edit_file,
is_hidden_dot_filename) into a BLI function BLI_path_has_hidden_component
and then:
- Adds unit test coverage to it, which uncovered some inconsistencies
- Fix the behavior inconsistencies:
- A path component that is just a dot (.), was not considered hidden.
Unless it was the first folder component (now this is fixed).
- A path component that ended in a tilde (~) was considered hidden.
Unless it was the first folder component (now this is fixed).
- Speedup the function by not doing several recursive scans over the
string; instead all the logic is done in a single string scan.
Synthetic HasHiddenComponents_Performance test: 6.0s -> 1.1s for 50M calls
on Mac M1 Max.
More real world test (setup as in #120494): out of whole build_catalog_tree
time, the time taken by BLI_path_has_hidden_component drops from 37% down
to 28%
Pull Request: https://projects.blender.org/blender/blender/pulls/120541
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