C

Append Dir Tree to Existing Zip w/out Rewriting Entire Zip

See more Zip Examples

Demonstrates how to use the QuickAppend method to append a directory tree to an existing .zip archive. This method works by editing the existing .zip -- it does not rewrite or recompress the contents of the existing .zip. It is the fastest way to append additional files to a pre-existing large .zip archive. C

#include <C_CkZip.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkZip zip;
    BOOL recurse;

    success = FALSE;

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

    zip = CkZip_Create();

    //  The NewZip method only initializes the Zip object -- it does
    //  not create or write a .zip file.
    success = CkZip_NewZip(zip,"notUsed.zip");
    if (success == FALSE) {
        printf("%s\n",CkZip_lastErrorText(zip));
        CkZip_Dispose(zip);
        return;
    }

    //  Add a references to all files in a directory tree.
    //  Note: this does not read or compress the file contents --
    //  it simply adds file references to the zip object.
    recurse = TRUE;
    success = CkZip_AppendFiles(zip,"c:/temp/abc123/*",recurse);
    if (success == FALSE) {
        printf("%s\n",CkZip_lastErrorText(zip));
        CkZip_Dispose(zip);
        return;
    }

    //  Appends the contents of the zip object to the preExisting.zip
    //  zip archive.  preExisting.zip is opened, and the files
    //  referenced by this zip object are streamed in, compressed,
    //  and appended to the end of the archive.
    success = CkZip_QuickAppend(zip,"preExisting.zip");
    if (success == FALSE) {
        printf("%s\n",CkZip_lastErrorText(zip));
        CkZip_Dispose(zip);
        return;
    }

    printf("Success!\n");

    //  Note: Additional files, directory trees, or in-memory data
    //  can be appended by calling AddFile, AppendFiles,
    //  AddString, AddBd, AddSb, etc. multiple times.
    //  Whatever files and/or in-memory data that are referenced by
    //  this zip object will be appended to preExisting.zip when
    //  QuickAppend is called.


    CkZip_Dispose(zip);

    }