(Lianja) 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 Lianja Extension Download Chilkat Lianja Extension

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

loHttp = createobject("CkHttp")

loBd = createobject("CkBinData")

// This URL is valid and can be tested...
llSuccess = loHttp.QuickGetBd("http://chilkatdownload.com/example_data/hamlet.zip",loBd)
if (loHttp.LastMethodSuccess <> .T.) then
    ? loHttp.LastErrorText
    release loHttp
    release loBd
    return
endif

loZip = createobject("CkZip")

// Open the zip from the bytes contained in bd.
llSuccess = loZip.OpenBd(loBd)
if (llSuccess = .F.) then
    ? loZip.LastErrorText
    release loHttp
    release loBd
    release loZip
    return
endif

// Get the entry for the file we want..
loEntry = loZip.GetEntryByName("hamlet.xml")
if (loZip.LastMethodSuccess <> .T.) then
    ? loZip.LastErrorText
    release loHttp
    release loBd
    release loZip
    return
endif

// Convert all line endings to CRLF (if needed)
lnLineEndingBehavior = 2
lcXmlStr = loEntry.UnzipToString(lnLineEndingBehavior,"utf-8")
if (loEntry.LastMethodSuccess <> .T.) then
    ? loEntry.LastErrorText
    release loEntry
    release loHttp
    release loBd
    release loZip
    return
endif

// The XML in this case is about 274K, so let's just examine the last 20 lines...
loSb = createobject("CkStringBuilder")
loSb.Append(lcXmlStr)

? loSb.LastNLines(20,.T.)

release loEntry


release loHttp
release loBd
release loZip
release loSb