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patch 8.2.0875: getting attributes for directory entries is slow

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Problem:    Getting attributes for directory entries is slow.
Solution:   Add readdirex(). (Ken Takata, closes #5619)
This commit is contained in:
Bram Moolenaar
2020-06-01 16:09:41 +02:00
parent d14fd5285e
commit 6c9ba04280
9 changed files with 631 additions and 173 deletions
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41
src/testdir/test_functions.vim
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@@ -1834,7 +1834,7 @@ func Test_readdir()
call assert_equal(['bar.txt', 'dir', 'foo.txt'], sort(files))
" Only results containing "f"
let files = 'Xdir'->readdir({ x -> stridx(x, 'f') !=- 1 })
let files = 'Xdir'->readdir({ x -> stridx(x, 'f') != -1 })
call assert_equal(['foo.txt'], sort(files))
" Only .txt files
@@ -1857,6 +1857,45 @@ func Test_readdir()
eval 'Xdir'->delete('rf')
endfunc
func Test_readdirex()
call mkdir('Xdir')
call writefile([], 'Xdir/foo.txt')
call writefile([], 'Xdir/bar.txt')
call mkdir('Xdir/dir')
" All results
let files = readdirex('Xdir')->map({-> v:val.name})
call assert_equal(['bar.txt', 'dir', 'foo.txt'], sort(files))
" Only results containing "f"
let files = 'Xdir'->readdirex({ e -> stridx(e.name, 'f') != -1 })
\ ->map({-> v:val.name})
call assert_equal(['foo.txt'], sort(files))
" Only .txt files
let files = readdirex('Xdir', { e -> e.name =~ '.txt$' })
\ ->map({-> v:val.name})
call assert_equal(['bar.txt', 'foo.txt'], sort(files))
" Only .txt files with string
let files = readdirex('Xdir', 'v:val.name =~ ".txt$"')
\ ->map({-> v:val.name})
call assert_equal(['bar.txt', 'foo.txt'], sort(files))
" Limit to 1 result.
let l = []
let files = readdirex('Xdir', {e -> len(add(l, e.name)) == 2 ? -1 : 1})
\ ->map({-> v:val.name})
call assert_equal(1, len(files))
" Nested readdirex() must not crash
let files = readdirex('Xdir', 'readdirex("Xdir", "1") != []')
\ ->map({-> v:val.name})
call sort(files)->assert_equal(['bar.txt', 'dir', 'foo.txt'])
eval 'Xdir'->delete('rf')
endfunc
func Test_delete_rf()
call mkdir('Xdir')
call writefile([], 'Xdir/foo.txt')