Unicode C++

Get an FTP Listing Entry's Size as a String

Demonstrates the Chilkat Ftp2.GetSizeStr method, which returns the size in bytes of a cached directory-listing entry as a decimal string. The only argument is a zero-based index.

Background: Returning the size as text sidesteps integer-width limits entirely, which is useful in languages without a convenient 64-bit type and whenever you only need to display or log the value. Parse the string when you need to do arithmetic on it; otherwise it is ready to print as-is.

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#include <CkFtp2W.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  Demonstrates the Ftp2.GetSizeStr method, which returns the size in bytes of a cached
    //  directory-listing entry as a decimal string.  The only argument is a zero-based index.

    CkFtp2W ftp;

    ftp.put_Hostname(L"ftp.example.com");
    ftp.put_Username(L"myFtpLogin");

    //  Normally you would not hard-code the password in source.  You should instead obtain it
    //  from an interactive prompt, environment variable, or a secrets vault.
    ftp.put_Password(L"myPassword");

    success = ftp.Connect();
    if (success == false) {
        wprintf(L"%s\n",ftp.lastErrorText());
        return;
    }

    success = ftp.ChangeRemoteDir(L"public_html");
    if (success == false) {
        wprintf(L"%s\n",ftp.lastErrorText());
        return;
    }

    //  GetDirCount retrieves the directory listing on the first call and returns the number of
    //  entries.  A negative return indicates failure.
    int n = ftp.GetDirCount();
    if (n < 0) {
        wprintf(L"%s\n",ftp.lastErrorText());
        return;
    }

    int i;
    for (i = 0; i <= n - 1; i++) {
        const wchar_t *name = ftp.getFilename(i);

        //  The string form avoids integer-size limits in languages without a convenient 64-bit type.
        const wchar_t *fileSize = ftp.getSizeStr(i);
        wprintf(L"%s  %s bytes\n",name,fileSize);
    }

    success = ftp.Disconnect();
    if (success == false) {
        wprintf(L"%s\n",ftp.lastErrorText());
        return;
    }
    }