C

Extract ZIP Files Without Preserving Directory Paths Using DiscardPaths

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This example demonstrates how to use the DiscardPaths property to extract files from a ZIP archive without recreating the stored directory structure.

When DiscardPaths is set to _TRUE_, all extracted files are written directly into the target extraction directory, and any stored ZIP path information is ignored.

This is useful when:

• Flattening ZIP contents into a single directory
• Ignoring stored subdirectory structures during extraction
• Extracting only the files themselves without recreating folders

Suppose the ZIP archive contains:

docs/readme.txt
docs/manual.pdf
images/logo.png

Normally, extracting the ZIP would create:

output/docs/readme.txt
output/docs/manual.pdf
output/images/logo.png

But when DiscardPaths is set to _TRUE_, the extracted files become:

output/readme.txt
output/manual.pdf
output/logo.png

The stored ZIP directory paths are discarded during extraction.

C

#include <C_CkZip.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkZip zip;
    int numFilesUnzipped;

    success = FALSE;

    zip = CkZip_Create();

    //  Open an existing ZIP archive.
    success = CkZip_OpenZip(zip,"example.zip");
    if (success == FALSE) {
        printf("%s\n",CkZip_lastErrorText(zip));
        CkZip_Dispose(zip);
        return;
    }

    //  Discard stored ZIP paths during extraction.
    //  
    //  When DiscardPaths = TRUE, all files are extracted
    //  directly into the target directory without recreating
    //  the ZIP directory structure.
    CkZip_putDiscardPaths(zip,TRUE);

    //  Extract all files to the output directory.
    //  
    //  Even if the ZIP contains:
    //  
    //      docs/readme.txt
    //      docs/manual.pdf
    //      images/logo.png
    //  
    //  The extracted files become:
    //  
    //      c:/output/readme.txt
    //      c:/output/manual.pdf
    //      c:/output/logo.png
    //  
    numFilesUnzipped = CkZip_Unzip(zip,"c:/output");

    if (numFilesUnzipped < 0) {
        printf("%s\n",CkZip_lastErrorText(zip));
        CkZip_Dispose(zip);
        return;
    }

    printf("Number of files extracted = %d\n",numFilesUnzipped);

    CkZip_CloseZip(zip);

    printf("Files extracted successfully.\n");


    CkZip_Dispose(zip);

    }