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(Classic ASP) Zip Append Files and Entry Type

See more Zip Examples

Demonstrates appending files to a zip object for writing a .zip. Also explains the "entry type".

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Zip")
set zip = Server.CreateObject("Chilkat.Zip")

zipPath = "c:/temp/qa_output/out.zip"

' Initialize the zip object with the path of the .zip to be created.
success = zip.NewZip(zipPath)

' Recursively append to the zip object the paths of the files and directories in a directory tree.
' At this point we are not creating the .zip, nor are we reading the contents of the files.
' We are simply appending references to the files and directories in the local filesystem
' that will get processed when WriteZip is called.
recurse = 1
saveExtraPath = 0
archiveOnly = 0
includeHidden = 1
includeSystem = 0
success = zip.AppendFilesEx("c:/temp/files_to_zip",recurse,saveExtraPath,archiveOnly,includeHidden,includeSystem)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( zip.LastErrorText) & "</pre>"
    Response.End
End If

' Note: We can iterate over the references to the files that will be processed when zipping:
count = zip.NumEntries
i = 0
Do While i < count
    ' entry is a Chilkat.ZipEntry
    Set entry = zip.GetEntryByIndex(i)
    Response.Write "<pre>" & Server.HTMLEncode( entry.FileName & " entryType = " & entry.EntryType) & "</pre>"

    i = i + 1
Loop
Response.Write "<pre>" & Server.HTMLEncode( "----") & "</pre>"

' Sample output for the above loop:
' The entry type = 1, because these are entries that are references to files in the local filesystem
' that are to be processed when the zip is written.

' hamlet.xml entryType = 1
' hello.pdf entryType = 1
' ...
' ...

' Possible entry type values:
' 0 - Mapped Entry: An entry in an existing Zip file.
' 1 - File Entry: A file not yet in memory, but referenced. These entries are added by calling AppendFiles, AppendFilesEx, AppendOneFileOrDir, etc.
' 2 - Data Entry: An entry containing uncompressed data from memory. These entries are added by calling AppendData, AppendString, etc.
' 3 - Null Entry: An entry that no longer exists in the .zip.
' 4 - New Directory Entry: A directory entry added by calling AppendNewDir. 

' The application can continue to add additional entries.
' For example:
' eTemp is a Chilkat.ZipEntry
Set eTemp = zip.AppendString("helloWorld.txt","Hello World")

' Now let's have a look at what will get zipped when we write the zip:
count = zip.NumEntries
i = 0
Do While i < count
    ' entry is a Chilkat.ZipEntry
    Set entry = zip.GetEntryByIndex(i)
    Response.Write "<pre>" & Server.HTMLEncode( entry.FileName & " entryType = " & entry.EntryType) & "</pre>"

    i = i + 1
Loop
Response.Write "<pre>" & Server.HTMLEncode( "----") & "</pre>"

' You can see that "helloWorld.txt" is added. 
' Its entryType = 2, which means it is in-memory data (it is not a reference to a file in the local filesystem).

' hamlet.xml entryType = 1
' hello.pdf entryType = 1
' ...
' ...
' helloWorld.txt entryType = 2

' ----------------------------------------------------------------------------
' Now we'll write the zip to a .zip file.
zip.FileName = zipPath
success = zip.WriteZip()
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( zip.LastErrorText) & "</pre>"
    Response.End
End If

' Let's look again at the entries in the .zip
count = zip.NumEntries
i = 0
Do While i < count
    ' entry is a Chilkat.ZipEntry
    Set entry = zip.GetEntryByIndex(i)
    Response.Write "<pre>" & Server.HTMLEncode( entry.FileName & " entryType = " & entry.EntryType) & "</pre>"

    i = i + 1
Loop
Response.Write "<pre>" & Server.HTMLEncode( "----") & "</pre>"

' After writing the .zip, the entry types change to 0.
' Entry type 0 indicates that it's a "mapped entry", which is an entry in an existing (and currently open) .zip file.

' hamlet.xml entryType = 0
' hello.pdf entryType = 0
' ...
' ...
' helloWorld.txt entryType = 0

' ----------------------------------------------------------------------------
' If desired, we could continue adding additional entries of any kind (files or data) to the currently open .zip archive...

' eTemp is a Chilkat.ZipEntry
Set eTemp = zip.AppendString("helloWorld2.txt","Hello World 2")

' Write the .zip, including the new entries..
success = zip.WriteZip()
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( zip.LastErrorText) & "</pre>"
    Response.End
End If

' Finally, let's look again at the entries in the .zip
count = zip.NumEntries
i = 0
Do While i < count
    ' entry is a Chilkat.ZipEntry
    Set entry = zip.GetEntryByIndex(i)
    Response.Write "<pre>" & Server.HTMLEncode( entry.FileName & " entryType = " & entry.EntryType) & "</pre>"

    i = i + 1
Loop
Response.Write "<pre>" & Server.HTMLEncode( "----") & "</pre>"

' hamlet.xml entryType = 0
' hello.pdf entryType = 0
' ...
' ...
' helloWorld.txt entryType = 0
' helloWorld2.txt entryType = 0

zip.CloseZip 

Response.Write "<pre>" & Server.HTMLEncode( "Success") & "</pre>"

%>
</body>
</html>

 

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