(PowerBuilder) Find a ZIP Entry by Exact Path Using EntryOf

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This example demonstrates how to use the EntryOf method to find a ZIP entry whose stored path exactly matches a specified path.

Unlike EntryMatching, which performs wildcard matching, EntryOf performs an exact path lookup.

This method is useful when:

• The exact ZIP path is already known
• Retrieving a specific file or directory entry
• Verifying whether a particular entry exists in the ZIP archive

Suppose the ZIP archive contains:

docs/
docs/readme.txt
docs/manual.pdf
images/logo.png
data/config/settings.json

ZIP archives may optionally contain explicit directory entries such as docs/. These directory entries can also be retrieved using EntryOf.

The example:

• Finds an exact file entry
• Finds an exact directory entry
• Demonstrates the difference between file and directory entries

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
integer li_Success
oleobject loo_Zip
oleobject loo_Entry

li_Success = 0

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

li_Success = 0

// Open an existing ZIP archive.
loo_Zip = create oleobject
li_rc = loo_Zip.ConnectToNewObject("Chilkat.Zip")
if li_rc < 0 then
    destroy loo_Zip
    MessageBox("Error","Connecting to COM object failed")
    return
end if

li_Success = loo_Zip.OpenZip("example.zip")
if li_Success = 0 then
    Write-Debug loo_Zip.LastErrorText
    destroy loo_Zip
    return
end if

loo_Entry = create oleobject
li_rc = loo_Entry.ConnectToNewObject("Chilkat.ZipEntry")

// ------------------------------------------------------------
// Find a specific file entry by its exact ZIP path.

li_Success = loo_Zip.EntryOf("docs/readme.txt",loo_Entry)

if li_Success = 1 then
    Write-Debug "Found file entry:"
    Write-Debug "  FileName = " + loo_Entry.FileName
    Write-Debug "  IsDirectory = " + string(loo_Entry.IsDirectory)
    Write-Debug ""
end if

// ------------------------------------------------------------
// Find a directory entry.
// 
// ZIP archives may optionally contain explicit directory entries.
// In this example, "docs/" is a separate directory entry.

li_Success = loo_Zip.EntryOf("docs/",loo_Entry)

if li_Success = 1 then
    Write-Debug "Found directory entry:"
    Write-Debug "  FileName = " + loo_Entry.FileName
    Write-Debug "  IsDirectory = " + string(loo_Entry.IsDirectory)
    Write-Debug ""
end if

// ------------------------------------------------------------
// Attempt to find a non-existent entry.

li_Success = loo_Zip.EntryOf("images/missing.png",loo_Entry)

if li_Success = 0 then
    Write-Debug "The entry images/missing.png was not found."
end if

loo_Zip.CloseZip()

Write-Debug "Done."


destroy loo_Zip
destroy loo_Entry