Unzip Encrypted Text into a String Variable

Demonstrates how to open an encrypted .zip archive and unzip a text file directly into a string variable.

Downloads:

MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

FreeBSD C++ Libraries

HP-UX C++ Libraries

BlackBerry QNX C++ Libraries

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

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

    zip = CkZip_Create();

    //  Any string unlocks the component for the 1st 30-days.
    success = CkZip_UnlockComponent(zip,"Anything for 30-day trial");
    if (success != TRUE) {
        printf("%s\n",CkZip_lastErrorText(zip));
        return;
    }

    //  Set the password required for decrypting.
    CkZip_putDecryptPassword(zip,"myPassword");

    success = CkZip_OpenZip(zip,"encrypted.zip");
    if (success != TRUE) {
        printf("%s\n",CkZip_lastErrorText(zip));
        return;
    }

    //  Locate the file within the Zip to be unzipped into a string variable:

    entry = CkZip_FirstMatchingEntry(zip,"*.csv");
    if (!(entry == 0 )) {

        //  There are a few different InflateToString methods.
        //  InflateToString allows you to control line-endings LF-only vs. CRLF
        //  InflateToString2 returns the line-endings unmodified.
        //  Both InflateToString and InflateToString2 assume the
        //  data consists of ANSI characters.
        //  The InflateToString3 method allows for text stored in different
        //  character encodings to be returned as a string

        //  This example uses InflateToString2 -- line endings are
        //  unmodified and the text is simple ANSI...

        strCsv = CkZipEntry_inflateToString2(entry);
        printf("%s\n",strCsv);
        CkZipEntry_Dispose(entry);
    }
    else {
        printf("No matching entry found!\n");
    }



    CkZip_Dispose(zip);

    }