PowerBuilder

Iterate over Files and Directories in Filesystem Directory Tree

Demonstrates how to use the Chilkat DirTree object/class to iterate over the names of files and sub-directories in a directory tree.

This example iterates over a directory tree that contains these files and sub-directories:

a
    images (sub-directory)
        dudeA.gif
        Thumbs.db
    hamlet.xml
    pigs.xml
    Setup.exe
b
    yyy (sub-directory)
    zzz (sub-directory)
        HelloWorld123.txt
        test123.txt
    dude.gif
    dudeC.gif
    hello.txt
    Thumbs.db
test123.txt

The output for the code below looks like this:

(sub-directory)
Relative Path: a
Absolute Path: c:\temp\abc123\a
Absolute UNC Path: \\?\c:\temp\abc123\a
----
(sub-directory)
Relative Path: b
Absolute Path: c:\temp\abc123\b
Absolute UNC Path: \\?\c:\temp\abc123\b
----
Size in bytes: 15
Relative Path: test123.txt
Absolute Path: c:\temp\abc123\test123.txt
Absolute UNC Path: \\?\c:\temp\abc123\test123.txt
----
Size in bytes: 279658
Relative Path: a\hamlet.xml
Absolute Path: c:\temp\abc123\a\hamlet.xml
Absolute UNC Path: \\?\c:\temp\abc123\a\hamlet.xml
----
(sub-directory)
Relative Path: a\images
Absolute Path: c:\temp\abc123\a\images
Absolute UNC Path: \\?\c:\temp\abc123\a\images
----
Size in bytes: 8463
Relative Path: a\pigs.xml
Absolute Path: c:\temp\abc123\a\pigs.xml
Absolute UNC Path: \\?\c:\temp\abc123\a\pigs.xml
----
Size in bytes: 24576
Relative Path: a\Setup.exe
Absolute Path: c:\temp\abc123\a\Setup.exe
Absolute UNC Path: \\?\c:\temp\abc123\a\Setup.exe
----
Size in bytes: 6221
Relative Path: b\dude.gif
Absolute Path: c:\temp\abc123\b\dude.gif
Absolute UNC Path: \\?\c:\temp\abc123\b\dude.gif
----
Size in bytes: 6221
Relative Path: b\dudeC.gif
Absolute Path: c:\temp\abc123\b\dudeC.gif
Absolute UNC Path: \\?\c:\temp\abc123\b\dudeC.gif
----
Size in bytes: 13
Relative Path: b\hello.txt
Absolute Path: c:\temp\abc123\b\hello.txt
Absolute UNC Path: \\?\c:\temp\abc123\b\hello.txt
----
Size in bytes: 10240
Relative Path: b\Thumbs.db
Absolute Path: c:\temp\abc123\b\Thumbs.db
Absolute UNC Path: \\?\c:\temp\abc123\b\Thumbs.db
----
(sub-directory)
Relative Path: b\yyy
Absolute Path: c:\temp\abc123\b\yyy
Absolute UNC Path: \\?\c:\temp\abc123\b\yyy
----
(sub-directory)
Relative Path: b\zzz
Absolute Path: c:\temp\abc123\b\zzz
Absolute UNC Path: \\?\c:\temp\abc123\b\zzz
----
Size in bytes: 6221
Relative Path: a\images\dudeA.gif
Absolute Path: c:\temp\abc123\a\images\dudeA.gif
Absolute UNC Path: \\?\c:\temp\abc123\a\images\dudeA.gif
----
Size in bytes: 6144
Relative Path: a\images\Thumbs.db
Absolute Path: c:\temp\abc123\a\images\Thumbs.db
Absolute UNC Path: \\?\c:\temp\abc123\a\images\Thumbs.db
----
Size in bytes: 6080
Relative Path: b\zzz\HelloWorld123.txt
Absolute Path: c:\temp\abc123\b\zzz\HelloWorld123.txt
Absolute UNC Path: \\?\c:\temp\abc123\b\zzz\HelloWorld123.txt
----
Size in bytes: 15
Relative Path: b\zzz\test123.txt
Absolute Path: c:\temp\abc123\b\zzz\test123.txt
Absolute UNC Path: \\?\c:\temp\abc123\b\zzz\test123.txt
----

PowerBuilder

integer li_rc
integer li_Success
oleobject loo_DirTree
integer li_DoneIterating

li_Success = 0

loo_DirTree = create oleobject
li_rc = loo_DirTree.ConnectToNewObject("Chilkat.DirTree")
if li_rc < 0 then
    destroy loo_DirTree
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// Specify the root of the directory tree to be traversed.
loo_DirTree.BaseDir = "c:/temp/abc123"

// Indicate that we want to recursively traverse the tree.
loo_DirTree.Recurse = 1

// Begin the directory tree traversal.
li_Success = loo_DirTree.BeginIterate()
if li_Success <> 1 then
    Write-Debug loo_DirTree.LastErrorText
    destroy loo_DirTree
    return
end if

li_DoneIterating = loo_DirTree.DoneIterating
do while li_DoneIterating <> 1

    // Examine the file or directory at the current traversal position:
    if loo_DirTree.IsDirectory = 1 then
        Write-Debug "(sub-directory)"
    else
        Write-Debug "Size in bytes: " + string(loo_DirTree.FileSize32)
        // If the file size is larger than 2GB, then get the size as a decimal string.
        // (Chilkat provides a FileSize64 method in *some* programming languages. The FileSizeStr property is added in Chilkat v9.5.0.88)
        Write-Debug "Size in bytes: " + loo_DirTree.FileSizeStr
    end if

    Write-Debug "Relative Path: " + loo_DirTree.RelativePath
    Write-Debug "Absolute Path: " + loo_DirTree.FullPath
    Write-Debug "Absolute UNC Path: " + loo_DirTree.FullUncPath
    Write-Debug "----"

    // Advance to the next file or sub-directory in the tree traversal.
    li_Success = loo_DirTree.AdvancePosition()
    if li_Success <> 1 then
        if loo_DirTree.DoneIterating <> 1 then
            Write-Debug loo_DirTree.LastErrorText
            destroy loo_DirTree
            return
        end if

    end if

    li_DoneIterating = loo_DirTree.DoneIterating
loop


destroy loo_DirTree