Class: RUtilAnts::URLAccess::URLHandlers::FTP

Inherits:
Object
  • Object
show all
Defined in:
lib/rUtilAnts/URLHandlers/FTP.rb

Overview

Handler of FTP URLs

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(iURL) ⇒ FTP

Constructor

Parameters
  • iURL (String): The URL that this handler will manage


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# File 'lib/rUtilAnts/URLHandlers/FTP.rb', line 24

def initialize(iURL)
  @URL = iURL
  lURLMatch = iURL.match(/^(ftp|ftps):\/\/([^\/]*)\/(.*)$/)
  if (lURLMatch == nil)
    lURLMatch = iURL.match(/^(ftp|ftps):\/\/(.*)$/)
  end
  if (lURLMatch == nil)
    log_bug "URL #{iURL} was identified as an ftp like, but it appears to be false."
  else
    @URLProtocol, @URLServer, @URLPath = lURLMatch[1..3]
  end
end

Class Method Details

.get_matching_regexps ⇒ Object

Get a list of regexps matching the URL to get to this handler

Return
  • list: The list of regexps matching URLs from this handler


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# File 'lib/rUtilAnts/URLHandlers/FTP.rb', line 14

def self.get_matching_regexps
  return [
    /^(ftp|ftps):\/\/.*$/
  ]
end

Instance Method Details

#get_content(iFollowRedirections) ⇒ Object

Get the content of the URL

Parameters
  • iFollowRedirections (Boolean): Do we follow redirections while accessing the content ?
Return
  • Integer: Type of content returned
  • Object: The content, depending on the type previously returned:
    • Exception if CONTENT_ERROR: The corresponding error
    • String if CONTENT_REDIRECT: The new URL
    • String if CONTENT_STRING: The real content
    • String if CONTENT_LOCALFILENAME: The name of the local file name storing the content
    • String if CONTENT_LOCALFILENAME_TEMPORARY: The name of the temporary local file name storing the content


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# File 'lib/rUtilAnts/URLHandlers/FTP.rb', line 86

def get_content(iFollowRedirections)
  rContentFormat = nil
  rContent = nil

  begin
    require 'net/ftp'
    lFTPConnection = Net::FTP.new(@URLServer)
    lFTPConnection.
    lFTPConnection.chdir(File.dirname(@URLPath))
    rContent = get_corresponding_file_base_name
    rContentFormat = CONTENT_LOCALFILENAME_TEMPORARY
    log_debug "URL #{@URL} => Temporary file #{rContent}"
    lFTPConnection.getbinaryfile(File.basename(@URLPath), rContent)
    lFTPConnection.close
  rescue Exception
    rContent = $!
    rContentFormat = CONTENT_ERROR
    log_debug "Error accessing #{@URL}: #{rContent}"
  end

  return rContentFormat, rContent
end

#get_corresponding_file_base_name ⇒ Object

Get a corresponding file base name. This method has to make sure file extensions are respected, as it can be used for further processing.

Return
  • String: The file name


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# File 'lib/rUtilAnts/URLHandlers/FTP.rb', line 59

def get_corresponding_file_base_name
  lBase = File.basename(@URLPath)
  lExt = File.extname(@URLPath)
  lFileName = nil
  if (lExt.empty?)
    lFileName = lBase
  else
    # Check that extension has no characters following the URL (#, ? and ;)
    lBase = lBase[0..lBase.size-lExt.size-1]
    lFileName = "#{lBase}#{lExt.gsub(/^([^#\?;]*).*$/,'\1')}"
  end

  return get_valid_file_name(lFileName)
end

#get_crc ⇒ Object

Get the current CRC of the URL

Return
  • Integer: The CRC


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# File 'lib/rUtilAnts/URLHandlers/FTP.rb', line 49

def get_crc
  # We consider FTP URLs to be definitive: CRCs will never change.
  return 0
end

#get_server_id ⇒ Object

Get the server ID

Return
  • String: The server ID


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# File 'lib/rUtilAnts/URLHandlers/FTP.rb', line 41

def get_server_id
  return "#{@URLProtocol}://#{@URLServer}"
end