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Versions: 438
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Contents
module Effective
class CodeReader
attr_reader :lines
def initialize(filename, &block)
@lines = File.open(filename).readlines
block.call(self) if block_given?
end
# Iterate over the lines with a depth, and passed the stripped line to the passed block
def each_with_depth(from: nil, to: nil, &block)
Array(lines).each_with_index do |line, index|
next if index < (from || 0)
depth = line.length - line.lstrip.length
block.call(line.strip, depth, index)
break if to == index
end
nil
end
# Returns the index of the first line where the passed block returns true
def index(from: nil, to: nil, &block)
each_with_depth(from: from, to: to) do |line, depth, index|
return index if block.call(line, depth, index)
end
end
# Returns the stripped contents of the line in which the passed block returns true
def first(from: nil, to: nil, &block)
each_with_depth(from: from, to: to) do |line, depth, index|
return line if block.call(line, depth, index)
end
end
alias_method :find, :first
# Returns the stripped contents of the last line where the passed block returns true
def last(from: nil, to: nil, &block)
retval = nil
each_with_depth(from: from, to: nil) do |line, depth, index|
retval = line if block.call(line, depth, index)
end
retval
end
# Returns an array of stripped lines for each line where the passed block returns true
def select(from: nil, to: nil, &block)
retval = []
each_with_depth(from: from, to: to) do |line, depth, index|
retval << line if (block_given? == false || block.call(line, depth, index))
end
retval
end
end
end
Version data entries
438 entries across 438 versions & 1 rubygems