Class: String

Inherits:
Object show all
Defined in:
lib/y_support/core_ext/string/misc.rb

Instance Method Summary collapse

Instance Method Details

#default!(default_string) ⇒ Object

If the string is empty, it gets replace with the string given as argument.



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# File 'lib/y_support/core_ext/string/misc.rb', line 49

def default! default_string
  strip.empty? ? clear << default_string.to_s : self
end

#standardize ⇒ Object

Converts a string into a string suitable as a symbol. Although symbols can be created from any strings, sometimes it is good to have symbols without accented characters, punctuation and whitespaces. This method returns a string of these characteristics.



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# File 'lib/y_support/core_ext/string/misc.rb', line 64

def standardize
  ς = self.tr( "ÀÁÂÃÄÅàáâãäåĀāĂ㥹ÇçĆćĈĉĊċČčÐðĎďĐđÈÉÊËèéêëĒēĔĕĖėĘęĚěĜĝĞğĠġĢģĤĥĦħÌÍÎÏìíîïĨĩĪīĬĭĮįİıĴĵĶķĸĹĺĻļĽľĿŀŁłÑñŃńŅņŇňʼnŊŋÒÓÔÕÖØòóôõöøŌōŎŏŐőŔŕŖŗŘřŚśŜŝŞşŠšſŢţŤťŦŧÙÚÛÜùúûüŨũŪūŬŭŮůŰűŲųŴŵÝýÿŶŷŸŹźŻżŽž",
             "AAAAAAaaaaaaAaAaAaCcCcCcCcCcDdDdDdEEEEeeeeEeEeEeEeEeGgGgGgGgHhHhIIIIiiiiIiIiIiIiIiJjKkkLlLlLlLlLlNnNnNnNnnNnOOOOOOooooooOoOoOoRrRrRrSsSsSsSssTtTtTtUUUUuuuuUuUuUuUuUuUuWwYyyYyYZzZzZz"
           )
  ",.;".each_char { |c| ς.gsub! c, " " }
  ς.stripn.squeeze(" ").underscore_spaces
end

#stripn ⇒ Object

Like #strip, but also strips newlines.



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# File 'lib/y_support/core_ext/string/misc.rb', line 30

def stripn
  encode( universal_newline: true )
    .gsub("\n", "")
    .strip
end

#to_Float ⇒ Object

Float() style conversion, or false if conversion impossible.



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# File 'lib/y_support/core_ext/string/misc.rb', line 19

def to_Float
  begin
    fl = Float stripn
    return fl
  rescue ArgumentError
    return false
  end
end

#to_Integer ⇒ Object

Integer() style conversion, or false if conversion impossible.



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# File 'lib/y_support/core_ext/string/misc.rb', line 8

def to_Integer
  begin
    int = Integer stripn
    return int
  rescue ArgumentError
    return false
  end
end

#to_standardized_sym ⇒ Object

Applies #standardize to the receiver and converts the result to a symbol.



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# File 'lib/y_support/core_ext/string/misc.rb', line 74

def to_standardized_sym
  standardize.to_sym
end

#underscore_spaces ⇒ Object

As it says – replaces spaces with underscores.



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# File 'lib/y_support/core_ext/string/misc.rb', line 55

def underscore_spaces
  gsub ' ', '_'
end

#wring_heredoc ⇒ Object

Joins a paragraph of possibly indented, newline separated lines into a single contiguous string.



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# File 'lib/y_support/core_ext/string/misc.rb', line 39

def wring_heredoc
  encode(universal_newline: true)
    .split("\n")                   # split into lines
    .map( &:strip )                # strip them
    .delete_if( &:blank? )         # delete blank lines
    .join " "                      # and join with whitspace
end

#X!(arg = nil) ⇒ Object

Capitalizes a string and appends an exclamation mark. Also allows optional argument for string interpolation. Handy for constructing error messages.



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# File 'lib/y_support/core_ext/string/misc.rb', line 81

def X! arg=nil
  arg.nil? ? capitalize + ?! : ( self % arg ).X!
end