Modern Fs DirEntry Filter

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WalkOptions.Filter

Sets a function that decides, entry by entry, what a walk returns and what it enters.

Syntax

WalkOptions.Filter / WalkOptions.FilterUser

Notes

• Filter is a WalkFilter, nullptr (yield and descend everything) by default. FilterUser is passed to it untouched: a pointer to your own state.

Examples

#import "std/fs"
using fs

function CountAll( byref e as const DirEntry, byval user as any ptr ) as long
    *cptr( long ptr, user ) += 1
    return WALK_ALL
end function

dim as ustring dir_ = CreateTempDir( "tkdoc" ).Value( )
CreateDirAll( PathJoin( dir_, "src" ) )
CreateDirAll( PathJoin( dir_, "build" ) )
WriteAllText( PathJoin( dir_, "src", "main.tiko" ), "x" )
WriteAllText( PathJoin( dir_, "build", "main.o" ), "x" )
WriteAllText( PathJoin( dir_, "README" ), "x" )
dim as long count = 0
dim as WalkOptions o
o.Filter = @CountAll
o.FilterUser = @count
for each e in WalkDir( dir_, o ) : next
print count    '' 5
RemoveDirAll( dir_ )

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Library: Filesystem Library Category: Filesystem Documented under: Directories