diff options
Diffstat (limited to 'activesupport/lib/active_support/inflector/methods.rb')
-rw-r--r-- | activesupport/lib/active_support/inflector/methods.rb | 98 |
1 files changed, 54 insertions, 44 deletions
diff --git a/activesupport/lib/active_support/inflector/methods.rb b/activesupport/lib/active_support/inflector/methods.rb index f741c0bfb8..c80243c40a 100644 --- a/activesupport/lib/active_support/inflector/methods.rb +++ b/activesupport/lib/active_support/inflector/methods.rb @@ -1,4 +1,5 @@ -require 'active_support/inflections' +require "active_support/inflections" +require "active_support/core_ext/regexp" module ActiveSupport # The Inflector transforms words from singular to plural, class names to table @@ -71,7 +72,7 @@ module ActiveSupport string = string.sub(/^(?:#{inflections.acronym_regex}(?=\b|[A-Z_])|\w)/) { |match| match.downcase } end string.gsub!(/(?:_|(\/))([a-z\d]*)/i) { "#{$1}#{inflections.acronyms[$2] || $2.capitalize}" } - string.gsub!('/'.freeze, '::'.freeze) + string.gsub!("/".freeze, "::".freeze) string end @@ -87,8 +88,8 @@ module ActiveSupport # # camelize(underscore('SSLError')) # => "SslError" def underscore(camel_cased_word) - return camel_cased_word unless camel_cased_word =~ /[A-Z-]|::/ - word = camel_cased_word.to_s.gsub('::'.freeze, '/'.freeze) + return camel_cased_word unless /[A-Z-]|::/.match?(camel_cased_word) + word = camel_cased_word.to_s.gsub("::".freeze, "/".freeze) word.gsub!(/(?:(?<=([A-Za-z\d]))|\b)(#{inflections.acronym_regex})(?=\b|[^a-z])/) { "#{$1 && '_'.freeze }#{$2.downcase}" } word.gsub!(/([A-Z\d]+)([A-Z][a-z])/, '\1_\2'.freeze) word.gsub!(/([a-z\d])([A-Z])/, '\1_\2'.freeze) @@ -125,9 +126,9 @@ module ActiveSupport inflections.humans.each { |(rule, replacement)| break if result.sub!(rule, replacement) } - result.sub!(/\A_+/, ''.freeze) - result.sub!(/_id\z/, ''.freeze) - result.tr!('_'.freeze, ' '.freeze) + result.sub!(/\A_+/, "".freeze) + result.sub!(/_id\z/, "".freeze) + result.tr!("_".freeze, " ".freeze) result.gsub!(/([a-z\d]*)/i) do |match| "#{inflections.acronyms[match] || match.downcase}" @@ -140,6 +141,15 @@ module ActiveSupport result end + # Converts just the first character to uppercase. + # + # upcase_first('what a Lovely Day') # => "What a Lovely Day" + # upcase_first('w') # => "W" + # upcase_first('') # => "" + def upcase_first(string) + string.length > 0 ? string[0].upcase.concat(string[1..-1]) : "" + end + # Capitalizes all the words and replaces some characters in the string to # create a nicer looking title. +titleize+ is meant for creating pretty # output. It is not used in the Rails internals. @@ -176,14 +186,14 @@ module ActiveSupport # classify('calculus') # => "Calculus" def classify(table_name) # strip out any leading schema name - camelize(singularize(table_name.to_s.sub(/.*\./, ''.freeze))) + camelize(singularize(table_name.to_s.sub(/.*\./, "".freeze))) end # Replaces underscores with dashes in the string. # # dasherize('puni_puni') # => "puni-puni" def dasherize(underscored_word) - underscored_word.tr('_'.freeze, '-'.freeze) + underscored_word.tr("_".freeze, "-".freeze) end # Removes the module part from the expression in the string. @@ -196,7 +206,7 @@ module ActiveSupport # See also #deconstantize. def demodulize(path) path = path.to_s - if i = path.rindex('::') + if i = path.rindex("::") path[(i+2)..-1] else path @@ -213,7 +223,7 @@ module ActiveSupport # # See also #demodulize. def deconstantize(path) - path.to_s[0, path.rindex('::') || 0] # implementation based on the one in facets' Module#spacename + path.to_s[0, path.rindex("::") || 0] # implementation based on the one in facets' Module#spacename end # Creates a foreign key name from a class name. @@ -229,8 +239,8 @@ module ActiveSupport # Tries to find a constant with the name specified in the argument string. # - # 'Module'.constantize # => Module - # 'Foo::Bar'.constantize # => Foo::Bar + # constantize('Module') # => Module + # constantize('Foo::Bar') # => Foo::Bar # # The name is assumed to be the one of a top-level constant, no matter # whether it starts with "::" or not. No lexical context is taken into @@ -239,14 +249,14 @@ module ActiveSupport # C = 'outside' # module M # C = 'inside' - # C # => 'inside' - # 'C'.constantize # => 'outside', same as ::C + # C # => 'inside' + # constantize('C') # => 'outside', same as ::C # end # # NameError is raised when the name is not in CamelCase or the constant is # unknown. def constantize(camel_cased_word) - names = camel_cased_word.split('::'.freeze) + names = camel_cased_word.split("::".freeze) # Trigger a built-in NameError exception including the ill-formed constant in the message. Object.const_get(camel_cased_word) if names.empty? @@ -304,7 +314,7 @@ module ActiveSupport raise if e.name && !(camel_cased_word.to_s.split("::").include?(e.name.to_s) || e.name.to_s == camel_cased_word.to_s) rescue ArgumentError => e - raise unless e.message =~ /not missing constant #{const_regexp(camel_cased_word)}\!$/ + raise unless /not missing constant #{const_regexp(camel_cased_word)}!$/.match?(e.message) end # Returns the suffix that should be added to a number to denote the position @@ -323,9 +333,9 @@ module ActiveSupport "th" else case abs_number % 10 - when 1; "st" - when 2; "nd" - when 3; "rd" + when 1; "st" + when 2; "nd" + when 3; "rd" else "th" end end @@ -346,36 +356,36 @@ module ActiveSupport private - # Mounts a regular expression, returned as a string to ease interpolation, - # that will match part by part the given constant. - # - # const_regexp("Foo::Bar::Baz") # => "Foo(::Bar(::Baz)?)?" - # const_regexp("::") # => "::" - def const_regexp(camel_cased_word) #:nodoc: - parts = camel_cased_word.split("::".freeze) + # Mounts a regular expression, returned as a string to ease interpolation, + # that will match part by part the given constant. + # + # const_regexp("Foo::Bar::Baz") # => "Foo(::Bar(::Baz)?)?" + # const_regexp("::") # => "::" + def const_regexp(camel_cased_word) #:nodoc: + parts = camel_cased_word.split("::".freeze) - return Regexp.escape(camel_cased_word) if parts.blank? + return Regexp.escape(camel_cased_word) if parts.blank? - last = parts.pop + last = parts.pop - parts.reverse.inject(last) do |acc, part| - part.empty? ? acc : "#{part}(::#{acc})?" + parts.reverse.inject(last) do |acc, part| + part.empty? ? acc : "#{part}(::#{acc})?" + end end - end - # Applies inflection rules for +singularize+ and +pluralize+. - # - # apply_inflections('post', inflections.plurals) # => "posts" - # apply_inflections('posts', inflections.singulars) # => "post" - def apply_inflections(word, rules) - result = word.to_s.dup + # Applies inflection rules for +singularize+ and +pluralize+. + # + # apply_inflections('post', inflections.plurals) # => "posts" + # apply_inflections('posts', inflections.singulars) # => "post" + def apply_inflections(word, rules) + result = word.to_s.dup - if word.empty? || inflections.uncountables.uncountable?(result) - result - else - rules.each { |(rule, replacement)| break if result.sub!(rule, replacement) } - result + if word.empty? || inflections.uncountables.uncountable?(result) + result + else + rules.each { |(rule, replacement)| break if result.sub!(rule, replacement) } + result + end end - end end end |