Class: NumRu::GDir::HtDir

Inherits:
Object
  • Object
show all
Defined in:
lib/numru/htdir.rb

Constant Summary collapse

Regexp_URL = 
/^(http:\/\/)?([\w\-\.]+)(:(\d+))?(\/[\w\-\.\/_~]*)?/
Regexp_File = 
/<img.*alt=\"\[(.*)\]\".*href=\"([^\"]+)\"[^>]*>([^<]*)/i
File_Type = 
{'DIR'=>'directory','TXT'=>'text'}
@@proxy_host = 
@@proxy_port = nil
@@dods_interpret = 
false

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(url, proxy = nil) ⇒ HtDir

Returns a new instance of HtDir.



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# File 'lib/numru/htdir.rb', line 65

def initialize(url, proxy=nil)
  url += '/' if /\/$/ !~ url    # treat URLs that always end with '/'
  @url = url
  if Regexp_URL =~ @url
    @host = $2
    @port = ( $4 ? $4.to_i : 80 )
    @path = $5
  else
    raise "Invalid URL: "+url
  end
  if proxy
    if Regexp_URL =~ proxy
      @proxy_host = $2
      @proxy_port = ( $4 ? $4.to_i : 8080 )
    else
      raise "Invalid Proxy URL: "+proxy
    end
  else
    @proxy_host = @@proxy_host
    @proxy_port = @@proxy_port
  end
  @http = Net::HTTP.new(@host, @port, @proxy_host, @proxy_port)
  res = @http.get(@path)
  @body = res.body
  @files = Array.new
  @body.each do |line|
    if Regexp_File =~ line
      fltyp = File_Type[$1]
      url = $2
      label = $3
      if @@dods_interpret
 if /Parent Directory/ =~ label
    url = '..'
 else
    url = File.basename( url.sub(/http:\//,'') )
 end
 if ( fltyp != 'text' and /\.(\w+)\.html$/ =~ url and
       /#{$1}$/ =~ label )
    # It must be a dods file url with a '.html' suffix
    url.sub!(/\.html$/,'')
 end
      end
      @files.push( {:file_type=>fltyp, :url=>url} )
    end
  end
end

Class Method Details

.dods_interpret ⇒ Object 



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# File 'lib/numru/htdir.rb', line 48

def dods_interpret; @@dods_interpret; end

.dods_interpret=(t_or_f) ⇒ Object 



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# File 'lib/numru/htdir.rb', line 49

def dods_interpret=(t_or_f)
  @@dods_interpret=t_or_f
end

.proxy=(proxy) ⇒ Object 



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# File 'lib/numru/htdir.rb', line 55

def proxy=(proxy)
  if Regexp_URL =~ proxy
    @@proxy_host = $2
    @@proxy_port = ( $4 ? $4.to_i : 8080 )
  else
    raise "Invalid Proxy URL: "+proxy
  end
end

.proxy_host ⇒ Object 



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# File 'lib/numru/htdir.rb', line 54

def proxy_host; @@proxy_host; end

.proxy_port ⇒ Object 



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# File 'lib/numru/htdir.rb', line 53

def proxy_port; @@proxy_port; end

Instance Method Details

#body ⇒ Object 



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# File 'lib/numru/htdir.rb', line 112

def body
  @body
end

#close ⇒ Object 



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# File 'lib/numru/htdir.rb', line 142

def close
  @http.finish if @http.active?
end

#collect ⇒ Object 



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# File 'lib/numru/htdir.rb', line 122

def collect
  ary = Array.new
  @files.each do |fl|
    ary.push( yield(fl[:url]) )
  end
  ary
end

#each ⇒ Object 



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# File 'lib/numru/htdir.rb', line 116

def each
  @files.each do |fl|
    yield(fl[:url])
  end
end

#each_dir ⇒ Object 



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# File 'lib/numru/htdir.rb', line 130

def each_dir
  @files.each do |fl|
    yield(fl[:url]) if fl[:file_type] == 'directory'
  end
end

#each_file ⇒ Object 



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# File 'lib/numru/htdir.rb', line 136

def each_file
  @files.each do |fl|
    yield(fl[:url]) if fl[:file_type] != 'directory'
  end
end

#rewind ⇒ Object 



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# File 'lib/numru/htdir.rb', line 146

def rewind
  # do nothing
end