Class: Ghaki::Match::Parser::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/ghaki/match/parser/base.rb

Overview

Matches against paired regular expressions and returned values.

Direct Known Subclasses

Boolean

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ Base

Returns a new instance of Base.



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# File 'lib/ghaki/match/parser/base.rb', line 10

def initialize opts={}
  @match_lookup = opts[:match_lookup] || {}
  @default_value = opts[:default_value]
  add_words( opts[:match_words] ) if opts.has_key?(:match_words)
end

Instance Attribute Details

#default_value ⇒ Object

Returns the value of attribute default_value.



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# File 'lib/ghaki/match/parser/base.rb', line 8

def default_value
  @default_value
end

#match_lookup ⇒ Object

Returns the value of attribute match_lookup.



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# File 'lib/ghaki/match/parser/base.rb', line 8

def match_lookup
  @match_lookup
end

Instance Method Details

#add_words(pairs) ⇒ Object

Add simple words with return values to match pairs.

  • Keys are return values, values are words to turn into regexps.

Given:

add_words :up => %w{ ON UP }, :down => %w{ DOWN OFF }

This will match against ‘ON’ and ‘UP’ and return :up and match against ‘DOWN’ and ‘OFF’ and return :down



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# File 'lib/ghaki/match/parser/base.rb', line 25

def add_words pairs
  pairs.each_pair do |val,keyz|
    keyz.each do |key|
      @match_lookup[ %r{\A#{key}\z}i ] = val
    end
  end
end

#match_lines(lines, opts = {}) ⇒ Object

Matches lines against regexp keys returning paired value.

  • Yields on not found or returns default value.



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# File 'lib/ghaki/match/parser/base.rb', line 35

def match_lines lines, opts={}
  @match_lookup.each_pair do |rx_curr,ret_val|
    lines.each do |text|
      return ret_val if text =~ rx_curr
    end
  end
  if block_given?
    yield
  elsif opts.has_key?(:default_value)
    opts[:default_value]
  else
    @default_value
  end
end

#match_text(text, opts = {}) ⇒ Object

Matches string against regexp keys returning paired value.

  • Yields on not found or returns default value.



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# File 'lib/ghaki/match/parser/base.rb', line 52

def match_text text, opts={}
  @match_lookup.each_pair do |rx_curr,ret_val|
    return ret_val if text =~ rx_curr
  end
  if block_given?
    yield
  elsif opts.has_key?(:default_value)
    opts[:default_value]
  else
    @default_value
  end
end