Unicode C

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

See more Zip Examples

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

#include <C_CkHttpW.h>
#include <C_CkBinDataW.h>
#include <C_CkZipW.h>
#include <C_CkZipEntryW.h>
#include <C_CkStringBuilderW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkHttpW http;
    HCkBinDataW bd;
    HCkZipW zip;
    HCkZipEntryW entry;
    int lineEndingBehavior;
    const wchar_t *xmlStr;
    HCkStringBuilderW sb;

    success = FALSE;

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

    http = CkHttpW_Create();

    bd = CkBinDataW_Create();

    // This URL is valid and can be tested...
    success = CkHttpW_QuickGetBd(http,L"https://chilkatdownload.com/example_data/hamlet.zip",bd);
    if (CkHttpW_getLastMethodSuccess(http) == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkBinDataW_Dispose(bd);
        return;
    }

    zip = CkZipW_Create();

    // Open the zip from the bytes contained in bd.
    success = CkZipW_OpenBd(zip,bd);
    if (success == FALSE) {
        wprintf(L"%s\n",CkZipW_lastErrorText(zip));
        CkHttpW_Dispose(http);
        CkBinDataW_Dispose(bd);
        CkZipW_Dispose(zip);
        return;
    }

    // Get the entry for the file we want..
    entry = CkZipEntryW_Create();
    success = CkZipW_EntryOf(zip,L"hamlet.xml",entry);
    if (success == FALSE) {
        wprintf(L"%s\n",CkZipW_lastErrorText(zip));
        CkHttpW_Dispose(http);
        CkBinDataW_Dispose(bd);
        CkZipW_Dispose(zip);
        CkZipEntryW_Dispose(entry);
        return;
    }

    // Convert all line endings to CRLF (if needed)
    lineEndingBehavior = 2;
    xmlStr = CkZipEntryW_unzipToString(entry,lineEndingBehavior,L"utf-8");
    if (CkZipEntryW_getLastMethodSuccess(entry) == FALSE) {
        wprintf(L"%s\n",CkZipEntryW_lastErrorText(entry));
        CkHttpW_Dispose(http);
        CkBinDataW_Dispose(bd);
        CkZipW_Dispose(zip);
        CkZipEntryW_Dispose(entry);
        return;
    }

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

    wprintf(L"%s\n",CkStringBuilderW_lastNLines(sb,20,TRUE));


    CkHttpW_Dispose(http);
    CkBinDataW_Dispose(bd);
    CkZipW_Dispose(zip);
    CkZipEntryW_Dispose(entry);
    CkStringBuilderW_Dispose(sb);

    }