Module: DiffMethods

Included in:
DiMaPa
Defined in:
lib/diff_methods.rb

Constant Summary collapse

FIXNUM_MAX = 
2**(0.size * 8 - 2) - 1

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#diff_timeout ⇒ Object

Returns the value of attribute diff_timeout.



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# File 'lib/diff_methods.rb', line 4

def diff_timeout
  @diff_timeout
end

Instance Method Details

#diff_compute(text1, text2, checklines, deadline) ⇒ Object

Find the differences between two texts. Assumes that the texts do not have any common prefix or suffix.



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# File 'lib/diff_methods.rb', line 79

def diff_compute(text1, text2, checklines, deadline)
  if (diffs = diff_compute_common_cases(text1, text2))
    diffs

  elsif (diffs = diff_compute_half_match(text1, text2, checklines, deadline))
    diffs

  elsif checklines && text1.length > 100 && text2.length > 100
    diff_line_mode(text1, text2, deadline)

  else
    diff_bisect(text1, text2, deadline)
  end
end

#diff_main(text1, text2, checklines = true, deadline = nil) ⇒ Object

Find the differences between two texts. Simplifies the problem by stripping any common prefix or suffix off the texts before editing.

Raises:

  • (ArgumentError) 


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# File 'lib/diff_methods.rb', line 13

def diff_main(text1, text2, checklines = true, deadline = nil)
  # Set a deadline by which time the diff must be complete.
  deadline ||= diff_new_deadline

  # Check for null inputs.
  raise ArgumentError.new("Null inputs. (diff_main)") unless text1 || text2

  # Check for equality (speedup).
  return (text1.empty? ? [] : [[:equal, text1]]) if text1 == text2

  diff_main_compute_diff(text1, text2, checklines, deadline)
end

#initialize ⇒ Object 



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# File 'lib/diff_methods.rb', line 6

def initialize
  # Number of seconds to map a diff before giving up (0 for infinity).
  @diff_timeout = 1
end