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(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.
#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)); } |
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