Class: Ciphr::Functions::Simple::Replace

Inherits:
Function
  • Object
show all
Defined in:
lib/ciphr/functions/simple.rb

Instance Attribute Summary

Attributes inherited from Function

#args, #options

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Function

aligned, inherited, #initialize, invertable?, #prepend, #read

Constructor Details

This class inherits a constructor from Ciphr::Functions::Function

Class Method Details

.params ⇒ Object 



117
118
119
 
# File 'lib/ciphr/functions/simple.rb', line 117

def self.params
  [:input,:search,:replace]
end

.variants ⇒ Object 



113
114
115
 
# File 'lib/ciphr/functions/simple.rb', line 113

def self.variants
  [ [['repl','replace'], {}] ]
end

Instance Method Details

#apply ⇒ Object 



79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
 
# File 'lib/ciphr/functions/simple.rb', line 79

def apply
  input, searchin, replacein = @args
  search, replace = [searchin.read, replacein.read]
  buf = ""
  Proc.new do
    if buf.size == search.size && search.size > 0
      buf = ""
      replace
    else
      inchunk = input.read(1)
      if inchunk 
        if inchunk == search[buf.size]
          buf += inchunk
          ""
        else
          buf += inchunk
          input.prepend(buf[1,buf.size])
          ret = buf[0]
          buf = ""
          ret
        end
      else
        if buf.size > 0
          ret = buf
          buf = ""
          ret
        else
          nil
        end
      end
    end
  end
end