Modern Fs WalkDir

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WalkDir

Lists every entry under a folder, subfolders included, for a for each loop.

Syntax

WalkDir( p )
WalkDir( p, opts )

Notes

• recursive, pre-order

Examples

#import "std/fs"
using fs

dim td as FsResultUStr = CreateTempDir( "fbdoc" )
dim as ustring dir_ = td.Value( )
WriteAllText( PathJoin( dir_, "a.txt" ), "aaa" )
WriteAllText( PathJoin( dir_, "b.txt" ), "bb" )
CreateDir( PathJoin( dir_, "sub" ) )
WriteAllText( PathJoin( dir_, "sub", "c.txt" ), "c" )

'' RECURSIVE and PRE-ORDER: a directory is yielded before its contents
dim as int32 files_ = 0
for each r in WalkDir( dir_ )
    if r.IsOk( ) then
        if r.Value( ).IsFile( ) then files_ += 1
    end if
next
print files_                 '' 3 -- a.txt, b.txt and sub/c.txt

'' It does NOT follow symlinks by default, which makes the traversal a
'' tree by construction: no cycle is possible and no visited set is
'' needed. A WalkOptions overload changes that and four other things.

RemoveDirAll( dir_ )

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Library: Filesystem Library
Category: Filesystem
Documented under: Directories