(Unicode C++) Download a Zip from a URL and OpenBd. (No .zip file is created)

Demonstrates how to download a .zip from a URL, opens the Zip, and gets the contents of a file. No file is ever written.

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

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

void ChilkatSample(void)
    {
    bool success = false;

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

    CkHttpW http;

    CkBinDataW bd;

    // This URL is valid and can be tested...
    success = http.QuickGetBd(L"http://chilkatdownload.com/example_data/hamlet.zip",bd);
    if (http.get_LastMethodSuccess() == false) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    CkZipW zip;

    // Open the zip from the bytes contained in bd.
    success = zip.OpenBd(bd);
    if (success == false) {
        wprintf(L"%s\n",zip.lastErrorText());
        return;
    }

    // Get the entry for the file we want..
    CkZipEntryW entry;
    success = zip.EntryOf(L"hamlet.xml",entry);
    if (success == false) {
        wprintf(L"%s\n",zip.lastErrorText());
        return;
    }

    // Convert all line endings to CRLF (if needed)
    int lineEndingBehavior = 2;
    const wchar_t *xmlStr = entry.unzipToString(lineEndingBehavior,L"utf-8");
    if (entry.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",entry.lastErrorText());
        return;
    }

    // The XML in this case is about 274K, so let's just examine the last 20 lines...
    CkStringBuilderW sb;
    sb.Append(xmlStr);

    wprintf(L"%s\n",sb.lastNLines(20,true));
    }