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 <CkZip.h>
#include <CkStringBuilder.h>
#include <CkZipEntry.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    CkZip zip;

    // 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 = zip.OpenZip("qa_data/zips/xml_files.zip");
    if (success == false) {
        std::cout << zip.lastErrorText() << "\r\n";
        return;
    }

    CkStringBuilder sbFilename;

    CkZipEntry entry;
    int numEntries = zip.get_NumEntries();
    int i = 0;
    while (i < numEntries) {
        zip.EntryAt(i,entry);

        const char *entryFilePath = entry.fileName();
        std::cout << entryFilePath << "\r\n";

        if (entry.get_IsDirectory() == false) {
            sbFilename.SetString(entryFilePath);
            if (sbFilename.Contains("/",false) == false) {
                // Does not contain "/"
                // Unzip to the qa_output directory.
                success = entry.Extract("qa_output");
                if (success == false) {
                    std::cout << "Failed to unzip " << entryFilePath << "\r\n";
                }
                else {
                    std::cout << "Unzipped " << entryFilePath << "\r\n";
                }

            }

        }

        i = i + 1;
    }
    }