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Versions: 9
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Contents
# encoding: utf-8
require 'ruby_speech'
module Adhearsion
class CallController
module Utility
# Utility method for DTMF GRXML grammars
#
# @param [Integer] digits Number of digits to accept in the grammar.
# @return [RubySpeech::GRXML::Grammar] A grammar suitable for use in SSML prompts
#
# @private
#
def grammar_digits(digits = 1)
RubySpeech::GRXML.draw :mode => 'dtmf', :root => 'inputdigits' do
rule id: 'inputdigits', scope: 'public' do
item repeat: digits.to_s do
one_of do
0.upto(9) { |d| item { d.to_s } }
end
end
end
end
end
# Utility method to create a single-digit grammar to accept only some digits
#
# @param [String] digits String representing the digits to accept
# @return [RubySpeech::GRXML::Grammar] A grammar suitable for use in SSML prompts
#
# @private
#
def grammar_accept(digits = '0123456789#*')
allowed_digits = '0123456789#*'
gram_digits = digits.chars.select { |x| allowed_digits.include? x }
RubySpeech::GRXML.draw :mode => 'dtmf', :root => 'inputdigits' do
rule id: 'inputdigits', scope: 'public' do
one_of do
gram_digits.each { |d| item { d.to_s } }
end
end
end
end
#
# Parses a DTMF tone string
#
# @param [String] dtmf the tone string to be parsed
# @return [String] the digits/*/# without any separation
#
# @private
#
def parse_dtmf(dtmf)
return if dtmf.nil?
dtmf.split(' ').inject '' do |final, digit|
final << parse_dtmf_digit(digit)
end
end
# @private
def parse_dtmf_digit(digit)
case tone = digit.split('-').last
when 'star'
'*'
when 'pound'
'#'
else
tone
end
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems