(C++) List Files/Directories in Zip by Index

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Demonstrates how to iterate over the files and directories in a zip archive by index.

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#include <CkZip.h>
#include <CkZipEntry.h>

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

    CkZip zip;

    bool success = zip.OpenZip("qa_data/zips/sample.zip");
    if (success != true) {
        std::cout << zip.lastErrorText() << "\r\n";
        return;
    }

    int numEntries = zip.get_NumEntries();
    int i = 0;

    CkZipEntry *entry = 0;

    while (i < numEntries) {
        entry = zip.GetEntryByIndex(i);
        // Note: In the ZIP file format, it is not required for a ZIP file to contain explicit directory entries. 
        // However, explicit directory entries can be included for convenience and compatibility with certain ZIP file processing tools and software.
        // An explicit directory entry in a ZIP file is an entry that specifically represents a directory, rather than a file. 
        // It usually has a directory name with a trailing slash (/) and zero-length content.
        if (entry->get_IsDirectory()) {
            std::cout << i << ": " << entry->fileName() << " (directory)" << "\r\n";
        }
        else {
            std::cout << i << ": " << entry->fileName() << "\r\n";
        }

        delete entry;
        i = i + 1;
    }

    // Sample output:

    // 0: aaa/ (directory)
    // 1: aaa/pigs.json
    // 2: bbb/ (directory)
    // 3: bbb/base64Cert.txt
    // 4: bbb/sub1/ (directory)
    // 5: bbb/sub1/brasil_cert.pem
    // 6: bbb/sub2/ (directory)
    // 7: bbb/sub2/penguins.gif
    // 8: bbb/sub2/starfish.jpg
    // 9: hamlet.xml
    // 10: hello.pdf

    zip.CloseZip();
    }