Java

Append Dir Tree to Existing Zip w/out Rewriting Entire Zip

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Demonstrates how to use the QuickAppend method to append a directory tree to an existing .zip archive. This method works by editing the existing .zip -- it does not rewrite or recompress the contents of the existing .zip. It is the fastest way to append additional files to a pre-existing large .zip archive. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Zip;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        Zip zip = new Zip();

        // The NewZip method only initializes the Zip object -- it does
        // not create or write a .zip file.
        try {
            zip.newZip("notUsed.zip");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Add a references to all files in a directory tree.
        // Note: this does not read or compress the file contents --
        // it simply adds file references to the zip object.
        boolean recurse = true;
        try {
            zip.appendFiles("c:/temp/abc123/*", recurse);

            // Appends the contents of the zip object to the preExisting.zip
            // zip archive.  preExisting.zip is opened, and the files
            // referenced by this zip object are streamed in, compressed,
            // and appended to the end of the archive.
            zip.quickAppend("preExisting.zip");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("Success!");

        // Note: Additional files, directory trees, or in-memory data
        // can be appended by calling AddFile, AppendFiles,
        // AddString, AddBd, AddSb, etc. multiple times.
        // Whatever files and/or in-memory data that are referenced by
        // this zip object will be appended to preExisting.zip when
        // QuickAppend is called.
    }
}