(MFC) Create Zip in a BinData Object

Recursively appends files in a directory tree and writes a zip archive into a Chilkat BinData object.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkZip.h>
#include <CkBinData.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    CkZip zip;

    // Initialize the zip object.  Because we will never actually write a zip file to the filesystem,
    // the filepath passed to NewZip does not matter.
    bool success = zip.NewZip("x.zip");
    if (success != true) {
        strOut.append(zip.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Append a directory tree.  The call to AppendFiles does
    // not read the file contents or append them to the zip
    // object in memory.  It simply appends references
    // to the files so that when WriteBd, WriteZip, or WriteZipAndClose 
    // is called, the referenced files are streamed and compressed
    // into the .zip output file (or BinData object).

    bool recurse = true;
    success = zip.AppendFiles("c:/temp/a/*",recurse);
    if (success != true) {
        strOut.append(zip.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Write the zip archive into the bdZip object.
    CkBinData bdZip;
    success = zip.WriteBd(bdZip);
    if (success != true) {
        strOut.append(zip.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // We could directly access the bytes of the zip archive, or perhaps
    // get the zip bytes in base64 format.
    const char *zipAsBase64 = bdZip.getEncoded("base64");
    strOut.append(zipAsBase64);
    strOut.append("\r\n");

    // Or the zip can be used by some other Chilkat method call that accepts
    // a BinData object as an argument.


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }