Class: ActiveSupport::SafeBuffer

Relationships & Source Files
Namespace Children
Exceptions: `SafeConcatError`
Super Chains via Extension / Inclusion / Inheritance
Class Chain: self, `::String`
Instance Chain: self, `::String`
Inherits:	String `::Object` String ActiveSupport::SafeBuffer
Defined in:	activesupport/lib/active_support/core_ext/string/output_safety.rb

Constant Summary

UNSAFE_STRING_METHODS =
# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 20

%w(
  capitalize chomp chop delete delete_prefix delete_suffix
  downcase lstrip next reverse rstrip scrub squeeze strip
  succ swapcase tr tr_s unicode_normalize upcase
)

UNSAFE_STRING_METHODS_WITH_BACKREF =
# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 26
```
%w(gsub sub)
```

`::String` - Inherited

BLANK_RE, ENCODED_BLANKS

Class Method Summary

.new(str = "") ⇒ SafeBuffer constructor

Instance Attribute Summary

#html_safe? readonly

Alias for #html_safe.

`::String` - Inherited

#acts_like_string?	Enables more predictable duck-typing on String-like classes.
#blank?	A string is blank if it’s empty or contains whitespaces only:
#is_utf8?	Returns `true` if string has utf_8 encoding.
#present?

Instance Method Summary

#%(args)
#*(_)
#+(other)
#<<(value)

Alias for #concat.
#[](*args) (also: #slice)
#[]=(arg1, arg2, arg3 = nil)
#bytesplice(*args, value)
#chr
#concat(value) (also: #<<)
#encode_with(coder)
#html_safe (also: #html_safe?) readonly
#initialize_copy(other)
#insert(index, value)
#prepend(value)
#replace(value)
#safe_concat(value)
#slice(*args)

Alias for #[].
#slice!(*args)
#to_param
#to_s
#explicit_html_escape_interpolated_argument(arg) private
#implicit_html_escape_interpolated_argument(arg) private
#original_concat private
#set_block_back_references(block, match_data) private
#string_into_safe_buffer(new_string, is_html_safe) private

`::String` - Inherited

#at	If you pass a single integer, returns a substring of one character at that position.
#camelcase	Alias for String#camelize.
#camelize	By default, `camelize` converts strings to UpperCamelCase.
#classify	Creates a class name from a plural table name like Rails does for table names to models.
#constantize	`constantize` tries to find a declared constant with the name specified in the string.
#dasherize	Replaces underscores with dashes in the string.
#deconstantize	Removes the rightmost segment from the constant expression in the string.
#demodulize	Removes the module part from the constant expression in the string.
#downcase_first	Converts the first character to lowercase.
#ends_with?,
#exclude?	The inverse of `String#include?`.
#first	Returns the first character.
#foreign_key	Creates a foreign key name from a class name.
#from	Returns a substring from the given position to the end of the string.
#html_safe	Marks a string as trusted safe.
#humanize	Capitalizes the first word, turns underscores into spaces, and (by default) strips a trailing ‘_id’ if present.
#in_time_zone	Converts String to a `TimeWithZone` in the current zone if Time.zone or Time.zone_default is set, otherwise converts `::String` to a `::Time` via String#to_time
#indent	Indents the lines in the receiver:
#indent!	Same as `indent`, except it indents the receiver in-place.
#inquiry	Wraps the current string in the `StringInquirer` class, which gives you a prettier way to test for equality.
#last	Returns the last character of the string.
#mb_chars	`Multibyte` proxy.
#parameterize	Replaces special characters in a string so that it may be used as part of a ‘pretty’ URL.
#pluralize	Returns the plural form of the word in the string.
#remove	Returns a new string with all occurrences of the patterns removed.
#remove!	Alters the string by removing all occurrences of the patterns.
#safe_constantize	`safe_constantize` tries to find a declared constant with the name specified in the string.
#singularize	The reverse of `pluralize`, returns the singular form of a word in a string.
#squish	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!	Performs a destructive squish.
#starts_with?,
#strip_heredoc	Strips indentation in heredocs.
#tableize	Creates the name of a table like Rails does for models to table names.
#titlecase	Alias for String#titleize.
#titleize	Capitalizes all the words and replaces some characters in the string to create a nicer looking title.
#to	Returns a substring from the beginning of the string to the given position.
#to_date	Converts a string to a `::Date` value.
#to_datetime	Converts a string to a `::DateTime` value.
#to_time	Converts a string to a `::Time` value.
#truncate	Truncates a given `text` to length `truncate_to` if `text` is longer than `truncate_to`:
#truncate_bytes	Truncates `text` to at most `truncate_to` bytes in length without breaking string encoding by splitting multibyte characters or breaking grapheme clusters (“perceptual characters”) by truncating at combining characters.
#truncate_words	Truncates a given `text` after a given number of words (`words_count`):
#underscore	The reverse of `camelize`.
#upcase_first	Converts the first character to uppercase.
#as_json

Constructor Details

.new(str = "") ⇒ `SafeBuffer`

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 70


def initialize(str = "")
  @html_safe = true
  super
end

Instance Attribute Details

#html_safe? (readonly)

Alias for #html_safe.

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 135


alias_method :html_safe?, :html_safe

Instance Method Details

#%(args)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 123


def %(args)
  case args
  when Hash
    escaped_args = args.transform_values { |arg| explicit_html_escape_interpolated_argument(arg) }
  else
    escaped_args = Array(args).map { |arg| explicit_html_escape_interpolated_argument(arg) }
  end

  self.class.new(super(escaped_args))
end

#*(_)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 116


def *(_)
  new_string = super
  new_safe_buffer = new_string.is_a?(SafeBuffer) ? new_string : SafeBuffer.new(new_string)
  new_safe_buffer.instance_variable_set(:@html_safe, @html_safe)
  new_safe_buffer
end

#+(other)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 112


def +(other)
  dup.concat(other)
end

#<<(value)

Alias for #concat.

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 86


alias << concat

#[](*args) Also known as: #slice

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 38


def [](*args)
  if html_safe?
    new_string = super

    return unless new_string

    string_into_safe_buffer(new_string, true)
  else
    to_str[*args]
  end
end

#[]=(arg1, arg2, arg3 = nil)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 104


def []=(arg1, arg2, arg3 = nil)
  if arg3
    super(arg1, arg2, implicit_html_escape_interpolated_argument(arg3))
  else
    super(arg1, implicit_html_escape_interpolated_argument(arg2))
  end
end

#bytesplice(*args, value)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 88


def bytesplice(*args, value)
  super(*args, implicit_html_escape_interpolated_argument(value))
end

#chr

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 59


def chr
  return super unless html_safe?

  string_into_safe_buffer(super, true)
end

#concat(value) Also known as: #<<

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 80


def concat(value)
  unless value.nil?
    super(implicit_html_escape_interpolated_argument(value))
  end
  self
end

#encode_with(coder)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 146


def encode_with(coder)
  coder.represent_object nil, to_str
end

#explicit_html_escape_interpolated_argument(arg) (private)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 193


def explicit_html_escape_interpolated_argument(arg)
  (!html_safe? || arg.html_safe?) ? arg : CGI.escapeHTML(arg.to_s)
end

#html_safe (readonly) Also known as: #html_safe?

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 134


attr_reader :html_safe

#implicit_html_escape_interpolated_argument(arg) (private)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 197


def implicit_html_escape_interpolated_argument(arg)
  if !html_safe? || arg.html_safe?
    arg
  else
    CGI.escapeHTML(arg.to_str)
  end
end

#initialize_copy(other)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 75


def initialize_copy(other)
  super
  @html_safe = other.html_safe?
end

#insert(index, value)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 92


def insert(index, value)
  super(index, implicit_html_escape_interpolated_argument(value))
end

#original_concat (private)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 28


alias_method :original_concat, :concat

#prepend(value)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 96


def prepend(value)
  super(implicit_html_escape_interpolated_argument(value))
end

#replace(value)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 100


def replace(value)
  super(implicit_html_escape_interpolated_argument(value))
end

#safe_concat(value)

Raises:

(SafeConcatError)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 65


def safe_concat(value)
  raise SafeConcatError unless html_safe?
  original_concat(value)
end

#set_block_back_references(block, match_data) (private)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 205


def set_block_back_references(block, match_data)
  block.binding.eval("proc { |m| $~ = m }").call(match_data)
rescue ArgumentError
  # Can't create binding from C level Proc
end

#slice(*args)

Alias for #[].

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 49


alias_method :slice, :[]

#slice!(*args)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 51


def slice!(*args)
  new_string = super

  return new_string if !html_safe? || new_string.nil?

  string_into_safe_buffer(new_string, true)
end

#string_into_safe_buffer(new_string, is_html_safe) (private)

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 211


def string_into_safe_buffer(new_string, is_html_safe)
  new_safe_buffer = new_string.is_a?(SafeBuffer) ? new_string : SafeBuffer.new(new_string)
  new_safe_buffer.instance_variable_set :@html_safe, is_html_safe
  new_safe_buffer
end

#to_param

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 142


def to_param
  to_str
end

#to_s

[ GitHub ]

# File 'activesupport/lib/active_support/core_ext/string/output_safety.rb', line 138


def to_s
  self
end

Class: ActiveSupport::SafeBuffer

Constant Summary

::String - Inherited

Class Method Summary

Instance Attribute Summary

::String - Inherited

Instance Method Summary

::String - Inherited

Constructor Details

.new(str = "") ⇒ SafeBuffer

Instance Attribute Details

#html_safe? (readonly)

Instance Method Details

#%(args)

#*(_)

#+(other)

#<<(value)

#[](*args) Also known as: #slice

#[]=(arg1, arg2, arg3 = nil)

#bytesplice(*args, value)

#chr

#concat(value) Also known as: #<<

#encode_with(coder)

#explicit_html_escape_interpolated_argument(arg) (private)

#html_safe (readonly) Also known as: #html_safe?

#implicit_html_escape_interpolated_argument(arg) (private)

#initialize_copy(other)

#insert(index, value)

#original_concat (private)

#prepend(value)

#replace(value)

#safe_concat(value)

#set_block_back_references(block, match_data) (private)

#slice(*args)

#slice!(*args)

#string_into_safe_buffer(new_string, is_html_safe) (private)

#to_param

#to_s

`::String` - Inherited

`::String` - Inherited

`::String` - Inherited

.new(str = "") ⇒ `SafeBuffer`