File Existence Check

Testing to see if a file exists on the FTP server. The GetSizeByName method is a convenient way to check if a file exists. It will return -1 if the file does not exist, otherwise it returns the size of the file in bytes.

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

#include <C_CkFtp2.h>

void ChilkatSample(void)
    {
    HCkFtp2 ftp;
    BOOL success;
    long fileSize;

    ftp = CkFtp2_Create();

    //  Any string unlocks the component for the 1st 30-days.
    success = CkFtp2_UnlockComponent(ftp,"Anything for 30-day trial");
    if (success != TRUE) {
        printf("%s\n",CkFtp2_lastErrorText(ftp));
        return;
    }

    CkFtp2_putHostname(ftp,"ftp.***.com");
    CkFtp2_putUsername(ftp,"***");
    CkFtp2_putPassword(ftp,"***");

    //  Connect and login to the FTP server.
    success = CkFtp2_Connect(ftp);
    if (success != TRUE) {
        printf("%s\n",CkFtp2_lastErrorText(ftp));
        return;
    }

    //  Set the current remote directory to where the file is located:
    success = CkFtp2_ChangeRemoteDir(ftp,"/something");
    if (success != TRUE) {
        printf("%s\n",CkFtp2_lastErrorText(ftp));
        return;
    }

    //  Test to see if the file exists by getting the file size by name.
    //  If a -1 is returned, the file does not exist.

    fileSize = CkFtp2_GetSizeByName(ftp,"test123.txt");
    if (fileSize < 0) {
        printf("file does not exist\n");
    }
    else {
        printf("file exists and is %d bytes in size\n"
            ,fileSize);
    }

    CkFtp2_Disconnect(ftp);

    CkFtp2_Dispose(ftp);

    }