Class: String

Inherits:
Object
  • Object
show all
Defined in:
lib/abstractor/core_ext/string.rb

Instance Method Summary collapse

Instance Method Details

#date? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/abstractor/core_ext/string.rb', line 82

def date?
  begin
    d = Date.parse(self)
  rescue ArgumentError => e
    nil
  end
end

#integer? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/abstractor/core_ext/string.rb', line 73

def integer?
  begin
    Integer(self)
    self
  rescue ArgumentError => e
    nil
  end
end

#numeric? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/abstractor/core_ext/string.rb', line 69

def numeric?
  match(Regexp::NUMERIC) != nil
end

#range(pattern, offset = 0) ⇒ Object

Like #index but returns a Range.

"This is a test!".range('test')  #=> (10..13)

CREDIT: Trans



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# File 'lib/abstractor/core_ext/string.rb', line 19

def range(pattern, offset=0)
  unless Regexp === pattern
    pattern = Regexp.new(Regexp.escape(pattern.to_s))
  end
  string = self[offset..-1]
  if md = pattern.match(string)
    return (md.begin(0)+offset)..(md.end(0)+offset-1)
  end
  nil
end

#range_all(pattern, reuse = false) ⇒ Object

Like #index_all but returns an array of Ranges.

"abc123abc123".range_all('abc')  #=> [0..2, 6..8]

TODO: Add offset ?

CREDIT: Trans



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# File 'lib/abstractor/core_ext/string.rb', line 38

def range_all(pattern, reuse=false)
  r = []; i = 0
  while i < self.length
    rng = range(pattern, i)
    if rng
      r << rng
      i += reuse ? 1 : rng.end + 1
    else
      break
    end
  end
  r.uniq
end

#range_of_line ⇒ Object

Returns an array of ranges mapping the characters per line.

"this\nis\na\ntest".range_of_line
#=> [0..4, 5..7, 8..9, 10..13]

CREDIT: Trans



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# File 'lib/abstractor/core_ext/string.rb', line 60

def range_of_line
  offset=0; charmap = []
  each_line do |line|
    charmap << (offset..(offset + line.length - 1))
    offset += line.length
  end
  charmap
end

#ssn? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/abstractor/core_ext/string.rb', line 90

def ssn?
  if  (integer? && length == 9)
    self
  elsif ((self =~ /[0-9]{3}-[0-9]{2}-[0-9]{4}/ ) == 0)
    self.gsub('-','')
  else
    nil
  end
end

#to_boolean ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/abstractor/core_ext/string.rb', line 7

def to_boolean
  return true if self == true || self =~ (/(true|t|yes|y|1)$/i)
  return false if self == false || self.blank? || self =~ (/(false|f|no|n|0)$/i)
  raise ArgumentError.new("invalid value for Boolean: \"#{self}\"")
end