Node.js

Replace/Update a FIle in a .zip

See more Zip Examples

Demonstrates how to replace/update a file from a .zip. Note: This requires the entire .zip to be rewritten. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    // First prepare a .zip and write it..
    var zip = new chilkat.Zip();

    zip.NewZip("qa_output/abc.zip");

    // Add some files..
    var charset = "utf-8";
    zip.AddString("a.txt","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",charset);
    zip.AddString("b.txt","bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",charset);
    zip.AddString("c.txt","cccccccccccccccccccccccccccccccccccc",charset);

    // Write to qa_output/abc.zip
    // This .zip contains three files: a.txt, b.txt, and c.txt
    success = zip.WriteZipAndClose();

    // -------------------------------------------------------------------
    // Open abc.zip, replace the content of the "b.txt" entry with something else, and re-write.
    var zip2 = new chilkat.Zip();
    zip2.OpenZip("qa_output/abc.zip");

    var entry = new chilkat.ZipEntry();
    if (zip2.EntryOf("b.txt",entry) == true) {
        entry.ReplaceString("This is the new content.  bbbbbbbbbbbbbbbbbbbbbb","utf-8");
    }

    // Write the modified .zip back to "abc.zip"
    success = zip2.WriteZipAndClose();

    console.log("success.");

}

chilkatExample();