Module: SitemapGenerator::Utilities

Defined in:
lib/sitemap_generator/utilities.rb

Overview

Internal utility functions: hash merging, string manipulation, byte calculation, and warning suppression. Not part of the public API.

Class Method Summary collapse

Class Method Details

.append_slash(path) ⇒ Object

Append a slash to path if it does not already end in a slash. Returns a string. Expects a string or Pathname object.



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# File 'lib/sitemap_generator/utilities.rb', line 168

def append_slash(path)
  strpath = path.to_s
  if !strpath[-1].nil? && strpath[-1].chr != '/'
    "#{strpath}/"
  else
    strpath
  end
end

.as_array(value) ⇒ Object

Make a list of value if it is not a list already. If value is nil, an empty list is returned. If value is already a list, return it unchanged.



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# File 'lib/sitemap_generator/utilities.rb', line 63

def as_array(value)
  if value.nil?
    []
  elsif value.is_a?(Array)
    value
  else
    [value]
  end
end

.assert_valid_keys(hash, *valid_keys) ⇒ Object

Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch. Note that keys are NOT treated indifferently, meaning if you use strings for keys but assert symbols as keys, this will fail.

Raises:

  • (ArgumentError) 


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# File 'lib/sitemap_generator/utilities.rb', line 37

def assert_valid_keys(hash, *valid_keys)
  unknown_keys = hash.keys - [valid_keys].flatten
  raise(ArgumentError, "Unknown key(s): #{unknown_keys.join(', ')}") unless unknown_keys.empty?
end

.blank?(object) ⇒ Boolean

An object is blank if it's false, empty, or a whitespace string. For example, "", " ", nil, [], and {} are blank.

This simplifies:

if !address.nil? && !address.empty?

...to:

if !address.blank?

Returns:

  • (Boolean) 


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# File 'lib/sitemap_generator/utilities.rb', line 123

def blank?(object) # rubocop:disable Metrics/MethodLength
  case object
  when NilClass, FalseClass
    true
  when TrueClass, Numeric
    false
  when String
    object !~ /\S/
  when Hash, Array
    object.empty?
  when Object
    object.respond_to?(:empty?) ? object.empty? : !object
  end
end

.bytesize(string) ⇒ Object

Return the bytesize length of the string. Ruby 1.8.6 compatible.



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# File 'lib/sitemap_generator/utilities.rb', line 188

def bytesize(string)
  string.respond_to?(:bytesize) ? string.bytesize : string.length
end

.clean_files ⇒ Object

Clean sitemap files in output directory.



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# File 'lib/sitemap_generator/utilities.rb', line 30

def clean_files
  FileUtils.rm(Dir[SitemapGenerator.app.root + 'public/sitemap*.xml.gz']) # rubocop:disable Style/StringConcatenation
end

.ellipsis(string, max) ⇒ Object

Replace the last 3 characters of string with ... if the string is as big or bigger than max.



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# File 'lib/sitemap_generator/utilities.rb', line 179

def ellipsis(string, max)
  if string.size > max
    "#{string[0, max - 3] || ''}..."
  else
    string
  end
end

.falsy?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/sitemap_generator/utilities.rb', line 162

def falsy?(value)
  ['0', 0, 'f', 'false', false].include?(value)
end

.install_sitemap_rb(verbose = false) ⇒ Object

Copy templates/sitemap.rb to config if not there yet.



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# File 'lib/sitemap_generator/utilities.rb', line 10

def install_sitemap_rb(verbose = false) # rubocop:disable Style/OptionalBooleanParameter
  if File.exist?(SitemapGenerator.app.root + 'config/sitemap.rb') # rubocop:disable Style/StringConcatenation
    puts 'already exists: config/sitemap.rb, file not copied' if verbose
  else
    FileUtils.cp(
      SitemapGenerator.templates.template_path(:sitemap_sample),
      SitemapGenerator.app.root + 'config/sitemap.rb' # rubocop:disable Style/StringConcatenation
    )
    puts 'created: config/sitemap.rb' if verbose
  end
end

.present?(object) ⇒ Boolean

An object is present if it's not blank.

Returns:

  • (Boolean) 


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# File 'lib/sitemap_generator/utilities.rb', line 139

def present?(object)
  !blank?(object)
end

.reverse_merge(hash, other_hash) ⇒ Object

Allows for reverse merging two hashes where the keys in the calling hash take precedence over those in the other_hash. This is particularly useful for initializing an option hash with default values:

def setup(options = {})
options.reverse_merge! :size => 25, :velocity => 10
end

Using merge, the above example would look as follows:

def setup(options = {})
{ :size => 25, :velocity => 10 }.merge(options)
end

The default :size and :velocity are only set if the options hash passed in doesn't already have the respective key.



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# File 'lib/sitemap_generator/utilities.rb', line 103

def reverse_merge(hash, other_hash)
  other_hash.merge(hash)
end

.reverse_merge!(hash, other_hash) ⇒ Object

Performs the opposite of merge, with the keys and values from the first hash taking precedence over the second. Modifies the receiver in place.



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# File 'lib/sitemap_generator/utilities.rb', line 109

def reverse_merge!(hash, other_hash)
  hash.merge!(other_hash) { |_k, o, _n| o }
end

.round(float, precision = nil) ⇒ Object

Rounds the float with the specified precision.

x = 1.337
x.round    # => 1
x.round(1) # => 1.3
x.round(2) # => 1.34


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# File 'lib/sitemap_generator/utilities.rb', line 79

def round(float, precision = nil)
  if precision
    magnitude = 10.0**precision
    (float * magnitude).round / magnitude
  else
    float.round
  end
end

.symbolize_keys(hash) ⇒ Object

Return a new hash with all keys converted to symbols, as long as they respond to to_sym.



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# File 'lib/sitemap_generator/utilities.rb', line 44

def symbolize_keys(hash)
  symbolize_keys!(hash.dup)
end

.symbolize_keys!(hash) ⇒ Object

Destructively convert all keys to symbols, as long as they respond to to_sym.



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# File 'lib/sitemap_generator/utilities.rb', line 50

def symbolize_keys!(hash)
  hash.keys.each do |key|
    hash[begin
      key.to_sym
    rescue StandardError
      key
    end || key] = hash.delete(key)
  end
  hash
end

.titleize(string) ⇒ Object 



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# File 'lib/sitemap_generator/utilities.rb', line 152

def titleize(string)
  result = string.tr('_', ' ')
  result.gsub!(/\b\w/, &:upcase)
  result
end

.truthy?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/sitemap_generator/utilities.rb', line 158

def truthy?(value)
  ['1', 1, 't', 'true', true].include?(value)
end

.uninstall_sitemap_rb ⇒ Object

Remove config/sitemap.rb if exists.



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# File 'lib/sitemap_generator/utilities.rb', line 23

def uninstall_sitemap_rb
  return unless File.exist?(SitemapGenerator.app.root + 'config/sitemap.rb') # rubocop:disable Style/StringConcatenation

  File.rm(SitemapGenerator.app.root + 'config/sitemap.rb') # rubocop:disable Style/StringConcatenation
end

.with_warnings(flag) ⇒ Object

Sets $VERBOSE for the duration of the block and back to its original value afterwards.



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# File 'lib/sitemap_generator/utilities.rb', line 144

def with_warnings(flag)
  old_verbose = $VERBOSE
  $VERBOSE = flag
  yield
ensure
  $VERBOSE = old_verbose
end