C#

Unzip Some Files by Iterating over Entries

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Demonstrates how to unzip specific files by iterating over entries in a .zip. C#

bool success = false;

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

Chilkat.Zip zip = new Chilkat.Zip();

// Open a .zip containing:
// 
// a1.xml
// b1.xml
// c1.xml
// dir1/a2.xml
// dir1/c2.xml
// dir2/dir3/c3.xml

// We wish to unzip only a1.xml, b1.xml, and c1.xml
success = zip.OpenZip("qa_data/zips/xml_files.zip");
if (success == false) {
    Debug.WriteLine(zip.LastErrorText);
    return;
}

Chilkat.StringBuilder sbFilename = new Chilkat.StringBuilder();

Chilkat.ZipEntry entry = new Chilkat.ZipEntry();
int numEntries = zip.NumEntries;
int i = 0;
while (i < numEntries) {
    zip.EntryAt(i,entry);

    string entryFilePath = entry.FileName;
    Debug.WriteLine(entryFilePath);

    if (entry.IsDirectory == false) {
        sbFilename.SetString(entryFilePath);
        if (sbFilename.Contains("/",false) == false) {
            // Does not contain "/"
            // Unzip to the qa_output directory.
            success = entry.Extract("qa_output");
            if (success == false) {
                Debug.WriteLine("Failed to unzip " + entryFilePath);
            }
            else {
                Debug.WriteLine("Unzipped " + entryFilePath);
            }

        }

    }

    i = i + 1;
}