Class: String

Inherits:

Object

• Object
• String

Defined in:

lib/r2-oas/lib/core_ext/string/filters.rb,
lib/r2-oas/lib/core_ext/object/blank.rb

Overview

Copy from github.com/rails/rails/blob/45b609c9964242f5c169d913c612eedce2a47397/activesupport/lib/active_support/core_ext/string/filters.rb#L11

Constant Summary

BLANK_REGEXP =

/\A[[:space:]]*\z/

Instance Method Summary

• #blank? ⇒ true, false

  A string is blank if it’s empty or contains whitespaces only:.

• #squish ⇒ Object

  Returns the string, first removing all whitespace on both ends of the string, and then changing remaining consecutive whitespace groups into one space each.

• #squish! ⇒ Object

  Performs a destructive squish.

Instance Method Details

#blank? ⇒ true, false

A string is blank if it’s empty or contains whitespaces only:

''.blank?       # => true
'   '.blank?    # => true
"\t\n\r".blank? # => true
' blah '.blank? # => false

Unicode whitespace is supported:

"\u00a0".blank? # => true

Returns:

• (true, false)

# File 'lib/r2-oas/lib/core_ext/object/blank.rb', line 119

def blank?
  BLANK_REGEXP === self
end

#squish ⇒ Object

Returns the string, first removing all whitespace on both ends of the string, and then changing remaining consecutive whitespace groups into one space each.

Note that it handles both ASCII and Unicode whitespace.

%{ Multi-line
   string }.squish                   # => "Multi-line string"
" foo   bar    \n   \t   boo".squish # => "foo bar boo"

# File 'lib/r2-oas/lib/core_ext/string/filters.rb', line 15

def squish
  dup.squish!
end

#squish! ⇒ Object

Performs a destructive squish. See String#squish.

str = " foo   bar    \n   \t   boo"
str.squish!                         # => "foo bar boo"
str                                 # => "foo bar boo"

# File 'lib/r2-oas/lib/core_ext/string/filters.rb', line 23

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