C

Unzip Some Files by Iterating over Entries

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Demonstrates how to unzip specific files by iterating over entries in a .zip. C

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

void ChilkatSample(void)
    {
    BOOL success;
    HCkZip zip;
    HCkStringBuilder sbFilename;
    HCkZipEntry entry;
    int numEntries;
    int i;
    const char *entryFilePath;

    success = FALSE;

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

    zip = CkZip_Create();

    // Open a .zip containing:
    // 
    // a1.xml
    // b1.xml
    // c1.xml
    // dir1/a2.xml
    // dir1/c2.xml
    // dir2/dir3/c3.xml

    // We wish to unzip only a1.xml, b1.xml, and c1.xml
    success = CkZip_OpenZip(zip,"qa_data/zips/xml_files.zip");
    if (success == FALSE) {
        printf("%s\n",CkZip_lastErrorText(zip));
        CkZip_Dispose(zip);
        return;
    }

    sbFilename = CkStringBuilder_Create();

    entry = CkZipEntry_Create();
    numEntries = CkZip_getNumEntries(zip);
    i = 0;
    while (i < numEntries) {
        CkZip_EntryAt(zip,i,entry);

        entryFilePath = CkZipEntry_fileName(entry);
        printf("%s\n",entryFilePath);

        if (CkZipEntry_getIsDirectory(entry) == FALSE) {
            CkStringBuilder_SetString(sbFilename,entryFilePath);
            if (CkStringBuilder_Contains(sbFilename,"/",FALSE) == FALSE) {
                // Does not contain "/"
                // Unzip to the qa_output directory.
                success = CkZipEntry_Extract(entry,"qa_output");
                if (success == FALSE) {
                    printf("Failed to unzip %s\n",entryFilePath);
                }
                else {
                    printf("Unzipped %s\n",entryFilePath);
                }

            }

        }

        i = i + 1;
    }



    CkZip_Dispose(zip);
    CkStringBuilder_Dispose(sbFilename);
    CkZipEntry_Dispose(entry);

    }