Objective-C

Download Multiple FTP Files by Wildcard (MGET)

Demonstrates the Chilkat Ftp2.MGetFiles method, which downloads files in the current remote directory matching a pattern into a local directory. The first argument is the remote pattern and the second is the local directory. It returns the number of files downloaded, or -1 on failure.

Note: The local paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is FTP's mget: fetch everything matching a wildcard in one call rather than looping yourself. It operates on the current remote directory — hence the ChangeRemoteDir first — and does not descend into subdirectories; use DownloadTree for recursive transfers. The count return lets you confirm how many matched, with -1 signaling an outright failure to check separately from a legitimate zero.

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Objective-C

#import <CkoFtp2.h>

BOOL success = NO;

//  Demonstrates the Ftp2.MGetFiles method, which downloads files in the current remote directory
//  matching a pattern into a local directory.  The 1st argument is the remote pattern and the 2nd
//  is the local directory.  It returns the number of files downloaded, or -1 on failure.

CkoFtp2 *ftp = [[CkoFtp2 alloc] init];

ftp.Hostname = @"ftp.example.com";
ftp.Username = @"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.Password = @"myPassword";

success = [ftp Connect];
if (success == NO) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

success = [ftp ChangeRemoteDir: @"public_html"];
if (success == NO) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

//  Download all .html files from the current remote directory.  Subdirectories are not traversed.
int numDownloaded = [[ftp MGetFiles: @"*.html" localDir: @"qa_output/site"] intValue];
if (numDownloaded < 0) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

NSLog(@"%@%d%@",@"Downloaded ",numDownloaded,@" files.");

success = [ftp Disconnect];
if (success == NO) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}