(PowerBuilder) Download a Zip from a URL and OpenBd. (No .zip file is created)

Demonstrates how to download a .zip from a URL, opens the Zip, and gets the contents of a file. No file is ever written.

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

integer li_rc
oleobject loo_Http
oleobject loo_Bd
integer li_Success
oleobject loo_Zip
oleobject loo_Entry
integer li_LineEndingBehavior
string ls_XmlStr
oleobject loo_Sb

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

loo_Http = create oleobject
// Use "Chilkat_9_5_0.Http" for versions of Chilkat < 10.0.0
li_rc = loo_Http.ConnectToNewObject("Chilkat.Http")
if li_rc < 0 then
    destroy loo_Http
    MessageBox("Error","Connecting to COM object failed")
    return
end if

loo_Bd = create oleobject
// Use "Chilkat_9_5_0.BinData" for versions of Chilkat < 10.0.0
li_rc = loo_Bd.ConnectToNewObject("Chilkat.BinData")

// This URL is valid and can be tested...
li_Success = loo_Http.QuickGetBd("http://chilkatdownload.com/example_data/hamlet.zip",loo_Bd)
if loo_Http.LastMethodSuccess <> 1 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Http
    destroy loo_Bd
    return
end if

loo_Zip = create oleobject
// Use "Chilkat_9_5_0.Zip" for versions of Chilkat < 10.0.0
li_rc = loo_Zip.ConnectToNewObject("Chilkat.Zip")

// Open the zip from the bytes contained in bd.
li_Success = loo_Zip.OpenBd(loo_Bd)
if li_Success = 0 then
    Write-Debug loo_Zip.LastErrorText
    destroy loo_Http
    destroy loo_Bd
    destroy loo_Zip
    return
end if

// Get the entry for the file we want..
loo_Entry = loo_Zip.GetEntryByName("hamlet.xml")
if loo_Zip.LastMethodSuccess <> 1 then
    Write-Debug loo_Zip.LastErrorText
    destroy loo_Http
    destroy loo_Bd
    destroy loo_Zip
    return
end if

// Convert all line endings to CRLF (if needed)
li_LineEndingBehavior = 2
ls_XmlStr = loo_Entry.UnzipToString(li_LineEndingBehavior,"utf-8")
if loo_Entry.LastMethodSuccess <> 1 then
    Write-Debug loo_Entry.LastErrorText
    destroy loo_Entry
    destroy loo_Http
    destroy loo_Bd
    destroy loo_Zip
    return
end if

// The XML in this case is about 274K, so let's just examine the last 20 lines...
loo_Sb = create oleobject
// Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
li_rc = loo_Sb.ConnectToNewObject("Chilkat.StringBuilder")

loo_Sb.Append(ls_XmlStr)

Write-Debug loo_Sb.LastNLines(20,1)

destroy loo_Entry


destroy loo_Http
destroy loo_Bd
destroy loo_Zip
destroy loo_Sb