Chilkat Examples

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(Xojo Plugin) 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 Xojo Plugin Download

Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

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

Dim http As New Chilkat.Http

Dim bd As New Chilkat.BinData

// This URL is valid and can be tested...
Dim success As Boolean
success = http.QuickGetBd("http://chilkatdownload.com/example_data/hamlet.zip",bd)
If (http.LastMethodSuccess <> True) Then
    System.DebugLog(http.LastErrorText)
    Return
End If

Dim zip As New Chilkat.Zip

// Open the zip from the bytes contained in bd.
success = zip.OpenBd(bd)
If (success = False) Then
    System.DebugLog(zip.LastErrorText)
    Return
End If

// Get the entry for the file we want..
Dim entry As Chilkat.ZipEntry
entry = zip.GetEntryByName("hamlet.xml")
If (zip.LastMethodSuccess <> True) Then
    System.DebugLog(zip.LastErrorText)
    Return
End If

// Convert all line endings to CRLF (if needed)
Dim lineEndingBehavior As Int32
lineEndingBehavior = 2
Dim xmlStr As String
xmlStr = entry.UnzipToString(lineEndingBehavior,"utf-8")
If (entry.LastMethodSuccess <> True) Then
    System.DebugLog(entry.LastErrorText)

    Return
End If

// The XML in this case is about 274K, so let's just examine the last 20 lines...
Dim sb As New Chilkat.StringBuilder
success = sb.Append(xmlStr)

System.DebugLog(sb.LastNLines(20,True))


 

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