(JavaScript) Find a ZIP Entry by Exact Path Using EntryOf

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This example demonstrates how to use the EntryOf method to find a ZIP entry whose stored path exactly matches a specified path.

Unlike EntryMatching, which performs wildcard matching, EntryOf performs an exact path lookup.

This method is useful when:

• The exact ZIP path is already known
• Retrieving a specific file or directory entry
• Verifying whether a particular entry exists in the ZIP archive

Suppose the ZIP archive contains:

docs/
docs/readme.txt
docs/manual.pdf
images/logo.png
data/config/settings.json

ZIP archives may optionally contain explicit directory entries such as docs/. These directory entries can also be retrieved using EntryOf.

The example:

• Finds an exact file entry
• Finds an exact directory entry
• Demonstrates the difference between file and directory entries

Note: This example requires Chilkat v11.0.0 or greater.

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.

var success = false;

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

success = false;

// Open an existing ZIP archive.
var zip = new CkZip();

success = zip.OpenZip("example.zip");
if (success == false) {
    console.log(zip.LastErrorText);
    return;
}

var entry = new CkZipEntry();

// ------------------------------------------------------------
// Find a specific file entry by its exact ZIP path.

success = zip.EntryOf("docs/readme.txt",entry);

if (success == true) {
    console.log("Found file entry:");
    console.log("  FileName = " + entry.FileName);
    console.log("  IsDirectory = " + entry.IsDirectory);
    console.log("");
}

// ------------------------------------------------------------
// Find a directory entry.
// 
// ZIP archives may optionally contain explicit directory entries.
// In this example, "docs/" is a separate directory entry.

success = zip.EntryOf("docs/",entry);

if (success == true) {
    console.log("Found directory entry:");
    console.log("  FileName = " + entry.FileName);
    console.log("  IsDirectory = " + entry.IsDirectory);
    console.log("");
}

// ------------------------------------------------------------
// Attempt to find a non-existent entry.

success = zip.EntryOf("images/missing.png",entry);

if (success == false) {
    console.log("The entry images/missing.png was not found.");
}

zip.CloseZip();

console.log("Done.");