(Unicode C++) Unzip Some Files by Iterating over Entries

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

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#include <CkZipW.h>
#include <CkStringBuilderW.h>
#include <CkZipEntryW.h>

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

    CkZipW 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
    bool success = zip.OpenZip(L"qa_data/zips/xml_files.zip");
    if (success != true) {
        wprintf(L"%s\n",zip.lastErrorText());
        return;
    }

    CkStringBuilderW sbFilename;

    int numEntries = zip.get_NumEntries();
    int i = 0;
    while (i < numEntries) {
        CkZipEntryW *entry = zip.GetEntryByIndex(i);

        const wchar_t *entryFilePath = entry->fileName();
        wprintf(L"%s\n",entryFilePath);

        if (entry->get_IsDirectory() == false) {
            sbFilename.SetString(entryFilePath);
            if (sbFilename.Contains(L"/",false) == false) {
                // Does not contain "/"
                // Unzip to the qa_output directory.
                success = entry->Extract(L"qa_output");
                if (success == false) {
                    wprintf(L"Failed to unzip %s\n",entryFilePath);
                }
                else {
                    wprintf(L"Unzipped %s\n",entryFilePath);
                }

            }

        }

        delete entry;

        i = i + 1;
    }
    }