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JavaScript

Extract ZIP Files Without Preserving Directory Paths Using DiscardPaths

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This example demonstrates how to use the DiscardPaths property to extract files from a ZIP archive without recreating the stored directory structure.

When DiscardPaths is set to _TRUE_, all extracted files are written directly into the target extraction directory, and any stored ZIP path information is ignored.

This is useful when:

  • Flattening ZIP contents into a single directory
  • Ignoring stored subdirectory structures during extraction
  • Extracting only the files themselves without recreating folders

Suppose the ZIP archive contains:

docs/readme.txt
docs/manual.pdf
images/logo.png

Normally, extracting the ZIP would create:

output/docs/readme.txt
output/docs/manual.pdf
output/images/logo.png

But when DiscardPaths is set to _TRUE_, the extracted files become:

output/readme.txt
output/manual.pdf
output/logo.png

The stored ZIP directory paths are discarded during extraction.

Note
This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.
JavaScript
var success = false;

success = false;

var zip = new CkZip();

// Open an existing ZIP archive.
success = zip.OpenZip("example.zip");
if (success == false) {
    console.log(zip.LastErrorText);
    return;
}

// Discard stored ZIP paths during extraction.
// 
// When DiscardPaths = true, all files are extracted
// directly into the target directory without recreating
// the ZIP directory structure.
zip.DiscardPaths = true;

// Extract all files to the output directory.
// 
// Even if the ZIP contains:
// 
//     docs/readme.txt
//     docs/manual.pdf
//     images/logo.png
// 
// The extracted files become:
// 
//     c:/output/readme.txt
//     c:/output/manual.pdf
//     c:/output/logo.png
// 
var numFilesUnzipped = zip.Unzip("c:/output");

if (numFilesUnzipped < 0) {
    console.log(zip.LastErrorText);
    return;
}

console.log("Number of files extracted = " + numFilesUnzipped);

zip.CloseZip();

console.log("Files extracted successfully.");