Java

Iterate Through Matching ZIP Entries Using EntryMatching and ZipEntry.GetNextMatch

See more Zip Examples

This example demonstrates how to iterate through ZIP entries matching a wildcard pattern using:

• Zip.EntryMatching to obtain the first matching entry
• ZipEntry.GetNextMatch to advance to subsequent matching entries

The wildcard character * matches zero or more characters. Matching is performed against the full stored ZIP entry path.

The example searches for all entries beneath the docs/ directory.

Suppose the ZIP archive contains:

docs/
docs/readme.txt
docs/manual.pdf
docs/sub1/notes.txt
images/logo.png
hello.txt

The wildcard pattern:

docs/*

Matches:

docs/
docs/readme.txt
docs/manual.pdf
docs/sub1/notes.txt

Note that ZIP archives may optionally contain separate directory entries. Therefore, the first matching entry may be the directory entry docs/ rather than a file entry.

Chilkat2 Java

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

public class ChilkatExample {

    public static void main(String[] args) {
        boolean success = false;

        Zip zip = new Zip();

        // Open an existing ZIP archive.
        try {
            zip.openZip("c:/temp/sample.zip");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // ------------------------------------------------------------
        // Find the first ZIP entry matching the wildcard pattern:
        //
        //     docs/*
        //
        // Matching is performed against the full stored ZIP path.
        //
        ZipEntry entry = new ZipEntry();

        try {
            zip.entryMatching("docs/*", entry);
            success = true;
        } catch (ChilkatException e) {
            success = false;
        }
        if (!success) {
            System.out.println("No matching entries found.");
            zip.closeZip();
            return;
        }

        // ------------------------------------------------------------
        // Iterate through all matching entries.
        //
        // GetNextMatch updates the same ZipEntry object so that
        // it represents the next matching entry.
        //
        while (success) {
            if (entry.getIsDirectory()) {
                System.out.println("[Directory] " + entry.getFileName());
            } else {
                System.out.println("[File] " + entry.getFileName());
            }

            // Advance to the next matching entry.
            success = entry.getNextMatch("docs/*");
        }

        zip.closeZip();

        System.out.println("Done.");
    }
}