Class: String

Inherits:
Object show all
Defined in:
lib/charyf/support/string.rb

Direct Known Subclasses

Charyf::StringInquirer

Instance Method Summary collapse

Instance Method Details

#camelize ⇒ Object 



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# File 'lib/charyf/support/string.rb', line 2

def camelize
  self.split('_').collect(&:capitalize).join
end

#constantize ⇒ Object 



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# File 'lib/charyf/support/string.rb', line 14

def constantize
  camel_cased_word = self

  names = camel_cased_word.split('::')

  # Trigger a built-in NameError exception including the ill-formed constant in the message.
  Object.const_get(camel_cased_word) if names.empty?

  # Remove the first blank element in case of '::ClassName' notation.
  names.shift if names.size > 1 && names.first.empty?

  names.inject(Object) do |constant, name|
    if constant == Object
      constant.const_get(name)
    else
      candidate = constant.const_get(name)
      next candidate if constant.const_defined?(name, false)
      next candidate unless Object.const_defined?(name)

      # Go down the ancestors to check if it is owned directly. The check
      # stops when we reach Object or the end of ancestors tree.
      constant = constant.ancestors.inject do |const, ancestor|
        break const    if ancestor == Object
        break ancestor if ancestor.const_defined?(name, false)
        const
      end

      # owner is in Object, so raise
      constant.const_get(name, false)
    end
  end
end

#deconstantize ⇒ Object 



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# File 'lib/charyf/support/string.rb', line 47

def deconstantize
  self.to_s[0, self.rindex("::") || 0]
end

#demodulize ⇒ Object 



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# File 'lib/charyf/support/string.rb', line 51

def demodulize
  if (i = self.rindex("::"))
    self[(i + 2)..-1]
  else
    self
  end
end

#ltrim(str = nil) ⇒ Object 



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# File 'lib/charyf/support/string.rb', line 74

def ltrim(str=nil)
  if (!str)
    return self.lstrip
  else
    escape = Regexp.escape(str)
  end

  return self.gsub(/^#{escape}+/, "")
end

#rtrim(str = nil) ⇒ Object 



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# File 'lib/charyf/support/string.rb', line 84

def rtrim(str=nil)
  if (!str)
    return self.rstrip
  else
    escape = Regexp.escape(str)
  end

  return self.gsub(/#{escape}+$/, "")
end

#squish ⇒ Object 



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# File 'lib/charyf/support/string.rb', line 59

def squish
  dup.squish!
end

#squish! ⇒ Object 



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# File 'lib/charyf/support/string.rb', line 63

def squish!
  gsub!(/\A[[:space:]]+/, '')
  gsub!(/[[:space:]]+\z/, '')
  gsub!(/[[:space:]]+/, ' ')
  self
end

#trim(str = nil) ⇒ Object 



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# File 'lib/charyf/support/string.rb', line 70

def trim(str=nil)
  return self.ltrim(str).rtrim(str)
end

#underscore ⇒ Object 



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# File 'lib/charyf/support/string.rb', line 6

def underscore
  self.gsub(/::/, '/').
      gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
      gsub(/([a-z\d])([A-Z])/,'\1_\2').
      tr("-", "_").
      downcase
end