Lianja

Unzip an AES Encrypted Text File directly into a String Variable

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A common need is to unzip from an AES encrypted Zip archive directly into a string variable, such that the unencrypted file never resides on disk, even temporarily. This example shows how to do it. Lianja

llSuccess = .F.

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

loZip = createobject("CkZip")

// This example opens a WinZip-compatible AES encrypted
// .zip that contains a single file: hamlet.xml.

// It decrypts and unzips hamlet.xml directly into a string
// variable.
loZip.SetPassword("secret")
llSuccess = loZip.OpenZip("qa_data/hamlet.zip")
if (llSuccess = .F.) then
    ? loZip.LastErrorText
    release loZip
    return
endif

loEntry = createobject("CkZipEntry")
llSuccess = loZip.EntryOf("hamlet.xml",loEntry)
if (llSuccess = .F.) then
    ? loZip.LastErrorText
    release loZip
    release loEntry
    return
endif

// lineEndingBehavior:
// 0 = leave unchanged.
// 1 = convert all to bare LF's
// 2 = convert all to CRLF's
lnLineEndingBehavior = 0
lcSrcCharset = "utf-8"
lcXmlText = loEntry.UnzipToString(lnLineEndingBehavior,lcSrcCharset)
? lcXmlText


release loZip
release loEntry