(C) Replace/Update a FIle in a .zip

Demonstrates how to replace/update a file from a .zip. Note: This requires the entire .zip to be rewritten.

Note: This example requires Chilkat v11.0.0 or greater.

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#include <C_CkZip.h>
#include <C_CkZipEntry.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkZip zip;
    const char *charset;
    HCkZip zip2;
    HCkZipEntry entry;

    success = FALSE;

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

    // First prepare a .zip and write it..
    zip = CkZip_Create();

    CkZip_NewZip(zip,"qa_output/abc.zip");

    // Add some files..
    charset = "utf-8";
    CkZip_AddString(zip,"a.txt","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",charset);
    CkZip_AddString(zip,"b.txt","bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",charset);
    CkZip_AddString(zip,"c.txt","cccccccccccccccccccccccccccccccccccc",charset);

    // Write to qa_output/abc.zip
    // This .zip contains three files: a.txt, b.txt, and c.txt
    success = CkZip_WriteZipAndClose(zip);

    // -------------------------------------------------------------------
    // Open abc.zip, replace the content of the "b.txt" entry with something else, and re-write.
    zip2 = CkZip_Create();
    CkZip_OpenZip(zip2,"qa_output/abc.zip");

    entry = CkZipEntry_Create();
    if (CkZip_EntryOf(zip2,"b.txt",entry) == TRUE) {
        CkZipEntry_ReplaceString(entry,"This is the new content.  bbbbbbbbbbbbbbbbbbbbbb","utf-8");
    }

    // Write the modified .zip back to "abc.zip"
    success = CkZip_WriteZipAndClose(zip2);

    printf("success.\n");


    CkZip_Dispose(zip);
    CkZip_Dispose(zip2);
    CkZipEntry_Dispose(entry);

    }