Class: MappedFile

Inherits:
Object
  • Object
show all
Includes:
MappedCommon
Defined in:
lib/cless/data.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from MappedCommon

#count_lines_upto, #parse_header

Constructor Details

#initialize(fname) ⇒ MappedFile

Returns a new instance of MappedFile.



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# File 'lib/cless/data.rb', line 164

def initialize(fname)
  @ptr = Mmap.new(fname)
  @lines = nil
  @file_path = fname

  if block_given?
    begin
      yield(self)
    ensure
      munmap
    end
  end
end

Instance Attribute Details

#file_path ⇒ Object (readonly)

Returns the value of attribute file_path.



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# File 'lib/cless/data.rb', line 162

def file_path
  @file_path
end

Instance Method Details

#[](*args) ⇒ Object 



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# File 'lib/cless/data.rb', line 184

def [](*args); @ptr[*args]; end

#each_line(&b) ⇒ Object 



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# File 'lib/cless/data.rb', line 185

def each_line(&b); @ptr.each_line(&b); end

#index(*args) ⇒ Object 



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# File 'lib/cless/data.rb', line 181

def index(*args); @ptr.index(*args); end

#lines ⇒ Object 



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# File 'lib/cless/data.rb', line 188

def lines
  return @lines if @lines
  @lines = @ptr.count("\n")
  @lines += 1 if @ptr[-1] != ?\n
  return @lines
end

#more_fd ⇒ Object 



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# File 'lib/cless/data.rb', line 186

def more_fd; nil; end

#munmap ⇒ Object 



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# File 'lib/cless/data.rb', line 179

def munmap; @ptr.munmap; end

#rindex(*args) ⇒ Object 



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# File 'lib/cless/data.rb', line 180

def rindex(*args); @ptr.rindex(*args); end

#search_index(*args) ⇒ Object 



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# File 'lib/cless/data.rb', line 183

def search_index(*args); index(*args); end

#search_rindex(*args) ⇒ Object 



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# File 'lib/cless/data.rb', line 182

def search_rindex(*args); rindex(*args); end

#size ⇒ Object 



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# File 'lib/cless/data.rb', line 178

def size; @ptr.size; end