Class: ReFe::CompletionTable

Inherits:
Object
  • Object
show all
Includes:
TraceUtils
Defined in:
lib/refe/completiontable.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from TraceUtils

#trace

Constructor Details

#initialize(path, writeok = false) ⇒ CompletionTable

Returns a new instance of CompletionTable.



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# File 'lib/refe/completiontable.rb', line 19

def initialize( path, writeok = false )
  @path = path
  @writeok = writeok
  begin
    @list = File.readlines(path).map {|line| line.strip }
  rescue Errno::ENOENT
    @list = []
  end
end

Instance Attribute Details

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/refe/completiontable.rb', line 29

def path
  @path
end

Instance Method Details

#add(item) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/refe/completiontable.rb', line 50

def add( item )
  raise ArgumentError, 'database is not writable' unless @writeok
  @list.push item
end

#expand(re) ⇒ Object 



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# File 'lib/refe/completiontable.rb', line 39

def expand( re )
  trace "comp: pattern = #{re.inspect}"
  results = @list.select {|item| re === item }
  if results.size < 20
    trace "comp: results = #{results.join(' ')}"
  else
    trace "comp: results = (too many candidates: #{results.size})"
  end
  results
end

#flush ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/refe/completiontable.rb', line 55

def flush
  raise ArgumentError, "database is readonly: path=#{@path}" unless @writeok
  begin
    File.open("#{@path}_tmp#{$$}", 'w') {|f|
      @list.uniq.sort.each do |i|
        f.puts i
      end
    }
    File.rename "#{@path}_tmp#{$$}", @path
  rescue
    begin
      File.unlink "#{@path}_tmp#{$$}"
    rescue Errno::ENOENT
      ;
    end
  end
end

#inspect ⇒ Object 



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# File 'lib/refe/completiontable.rb', line 31

def inspect
  "\#<#{self.class} path=#{@path}>"
end

#list ⇒ Object 



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# File 'lib/refe/completiontable.rb', line 35

def list
  @list.dup
end