From: James Cribbs <cribbsj@...>
Date: 2006-09-13T00:14:05+09:00
Subject: Re: Net::FTP questions...

Lincoln Anderson wrote:
> Here's where my problem comes in.  How can I tell from the list array
> whether an item is a directory or a file to be copied?  Is there
> something I can use (such as an FTP command) to catch a clue on how to
> implement this?  I know this is possible, as ftpmirror is done with
> PERL and Ruby can do anything PERL can do - better :)
>   
Here's a class I defined to use in a script I run that moves files 
between various Unix and Windows servers at my company.  Haven't looked 
at the code in a while, so it might be ugly, but it works!


class FTPLocation
    def initialize(host, userid, password, path)
        @host, @userid, @password = host, userid, password
         
        if path.nil?
            @path = './'
        else
            @path = path
        end
    end
     
    
#-----------------------------------------------------------------------
    # to_s
    
#-----------------------------------------------------------------------
    def to_s
        return '%s - %s' % [@host, @path]
    end
     
    
#-----------------------------------------------------------------------
    # connect
    
#-----------------------------------------------------------------------
    def connect
        @ftp = Net::FTP.new(@host, @userid, @password)
#        @ftp.debug_mode = true
        @ftp.chdir(@path)
    end
     
    
#-----------------------------------------------------------------------
    # empty?
    
#-----------------------------------------------------------------------
    def empty?
        @ftp.list.each do |entry|
            next if entry[0] == 'd'
            return false
        end
        return true
    end
     
    
#-----------------------------------------------------------------------
    # each_file
    
#-----------------------------------------------------------------------
    def each_file
        t = Time.now
        @ftp.list.each do |entry|
            next if entry[0] == 'd'
            filename = entry.split(' ')[-1]
            next if t - @ftp.mtime(filename) < 300
            yield filename
        end
    end
     
    
#-----------------------------------------------------------------------
    # file_exists?
    
#-----------------------------------------------------------------------
    def file_exists?(filename)
        @ftp.list.each do |entry|
            next if entry[0] == 'd'
            return true if filename == entry.split(' ')[-1]
        end
        return false
    end
     
     
    
#-----------------------------------------------------------------------
    # get_file
    
#-----------------------------------------------------------------------
    def get_file(filename, dest_path, xfer_type)
        if xfer_type == 'binary'
            @ftp.getbinaryfile(filename, dest_path)
        else
            @ftp.gettextfile(filename, dest_path)
        end
    end
     
    
#-----------------------------------------------------------------------
    # put_file
    
#-----------------------------------------------------------------------
    def put_file(source_path, filename, xfer_type)
        if xfer_type == 'binary'
            @ftp.putbinaryfile(source_path, filename)
        else
            @ftp.puttextfile(source_path, filename)
        end     
    end             
     
    
#-----------------------------------------------------------------------
    # delete_file
    
#-----------------------------------------------------------------------
    def delete_file(filename)
        @ftp.delete(filename)
    end
     
    
#-----------------------------------------------------------------------
    # close
    
#-----------------------------------------------------------------------
    def close
        @ftp.close if @ftp
    end
end


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