Class: Haml::Options

Inherits:
Object
  • Object
show all
Defined in:
lib/haml/options.rb

Overview

This class encapsulates all of the configuration options that Haml understands. Please see the Haml Reference to learn how to set the options.

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(values = {}) ⇒ Options

Returns a new instance of Options

174
175
176
177
178
 
# File 'lib/haml/options.rb', line 174

def initialize(values = {})
  defaults.each {|k, v| instance_variable_set :"@#{k}", v}
  values.each {|k, v| send("#{k}=", v) if defaults.has_key?(k) && !v.nil?}
  yield if block_given?
end

Class Attribute Details

.buffer_option_keys (readonly)

An array of keys that will be used to provide a hash of options to Buffer.

Returns:

  • Hash

26
27
28
 
# File 'lib/haml/options.rb', line 26

def buffer_option_keys
  @buffer_option_keys
end

.valid_formats (readonly)

An array of valid values for the :format option.

Returns:

  • Array

21
22
23
 
# File 'lib/haml/options.rb', line 21

def valid_formats
  @valid_formats
end

Instance Attribute Details

#attr_wrapper

The character that should wrap element attributes. This defaults to ' (an apostrophe). Characters of this type within the attributes will be escaped (e.g. by replacing them with ') if the character is an apostrophe or a quotation mark.

49
50
51
 
# File 'lib/haml/options.rb', line 49

def attr_wrapper
  @attr_wrapper
end

#autoclose

A list of tag names that should be automatically self-closed if they have no content. This can also contain regular expressions that match tag names (or any object which responds to #===). Defaults to ['meta', 'img', 'link', 'br', 'hr', 'input', 'area', 'param', 'col', 'base'].

55
56
57
 
# File 'lib/haml/options.rb', line 55

def autoclose
  @autoclose
end

#cdata

Whether to include CDATA sections around javascript and css blocks when using the :javascript or :css filters.

This option also affects the :sass, :scss, :less and :coffeescript filters.

Defaults to false for html, true for xhtml. Cannot be changed when using xhtml.

155
156
157
 
# File 'lib/haml/options.rb', line 155

def cdata
  @cdata
end

#compiler_class

The compiler class to use. Defaults to Haml::Compiler.

161
162
163
 
# File 'lib/haml/options.rb', line 161

def compiler_class
  @compiler_class
end

#encoding

The encoding to use for the HTML output. This can be a string or an Encoding Object. Note that Haml does not automatically re-encode Ruby values; any strings coming from outside the application should be converted before being passed into the Haml template. Defaults to Encoding.default_internal; if that’s not set, defaults to the encoding of the Haml template; if that’s US-ASCII, defaults to "UTF-8".

64
65
66
 
# File 'lib/haml/options.rb', line 64

def encoding
  @encoding
end

#escape_attrs

Sets whether or not to escape HTML-sensitive characters in attributes. If this is true, all HTML-sensitive characters in attributes are escaped. If it’s set to false, no HTML-sensitive characters in attributes are escaped. If it’s set to :once, existing HTML escape sequences are preserved, but other HTML-sensitive characters are escaped.

Defaults to true.

73
74
75
 
# File 'lib/haml/options.rb', line 73

def escape_attrs
  @escape_attrs
end

#escape_filter_interpolations

Sets whether or not to escape HTML-sensitive characters in interpolated strings. See also Escaping HTML and Unescaping HTML.

Defaults to the current value of escape_html.

90
91
92
 
# File 'lib/haml/options.rb', line 90

def escape_filter_interpolations
  @escape_filter_interpolations
end

#escape_html

Sets whether or not to escape HTML-sensitive characters in script. If this is true, = behaves like &=; otherwise, it behaves like !=. Note that if this is set, != should be used for yielding to subtemplates and rendering partials. See also Escaping HTML and Unescaping HTML.

Defaults to false.

83
84
85
 
# File 'lib/haml/options.rb', line 83

def escape_html
  @escape_html
end

#filename

The name of the Haml file being parsed. This is only used as information when exceptions are raised. This is automatically assigned when working through ActionView, so it’s really only useful for the user to assign when dealing with Haml programatically.

96
97
98
 
# File 'lib/haml/options.rb', line 96

def filename
  @filename
end

#filters

Key is filter name in String and value is Class to use. Defaults to {}.

172
173
174
 
# File 'lib/haml/options.rb', line 172

def filters
  @filters
end

#format

Determines the output format. The default is :html5. The other options are :html4 and :xhtml. If the output is set to XHTML, then Haml automatically generates self-closing tags and wraps the output of the Javascript and CSS-like filters inside CDATA. When the output is set to :html5 or :html4, XML prologs are ignored. In all cases, an appropriate doctype is generated from !!!.

If the mime_type of the template being rendered is text/xml then a format of :xhtml will be used even if the global output format is set to :html4 or :html5.

117
118
119
 
# File 'lib/haml/options.rb', line 117

def format
  @format
end

#hyphenate_data_attrs

If set to true, Haml will convert underscores to hyphens in all Custom Data Attributes As of Haml 4.0, this defaults to true.

101
102
103
 
# File 'lib/haml/options.rb', line 101

def hyphenate_data_attrs
  @hyphenate_data_attrs
end

#line

The line offset of the Haml template being parsed. This is useful for inline templates, similar to the last argument to Kernel#eval.

105
106
107
 
# File 'lib/haml/options.rb', line 105

def line
  @line
end

#mime_type

The mime type that the rendered document will be served with. If this is set to text/xml then the format will be overridden to :xhtml even if it has set to :html4 or :html5.

122
123
124
 
# File 'lib/haml/options.rb', line 122

def mime_type
  @mime_type
end

#parser_class

The parser class to use. Defaults to Haml::Parser.

158
159
160
 
# File 'lib/haml/options.rb', line 158

def parser_class
  @parser_class
end

#preserve

A list of tag names that should automatically have their newlines preserved using the Helpers#preserve helper. This means that any content given on the same line as the tag will be preserved. For example, %textarea= "Foo\nBar" compiles to <textarea>Foo&#x000A;Bar</textarea>. Defaults to ['textarea', 'pre']. See also Whitespace Preservation.

130
131
132
 
# File 'lib/haml/options.rb', line 130

def preserve
  @preserve
end

#remove_whitespace

If set to true, all tags are treated as if both whitespace removal options were present. Use with caution as this may cause whitespace-related formatting errors.

Defaults to false.

138
139
140
 
# File 'lib/haml/options.rb', line 138

def remove_whitespace
  @remove_whitespace
end

#suppress_eval

Whether or not attribute hashes and Ruby scripts designated by = or ~ should be evaluated. If this is true, said scripts are rendered as empty strings.

Defaults to false.

145
146
147
 
# File 'lib/haml/options.rb', line 145

def suppress_eval
  @suppress_eval
end

#trace

Enable template tracing. If true, it will add a ‘data-trace’ attribute to each tag generated by Haml. The value of the attribute will be the source template name and the line number from which the tag was generated, separated by a colon. On Rails applications, the path given will be a relative path as from the views directory. On non-Rails applications, the path will be the full path.

169
170
171
 
# File 'lib/haml/options.rb', line 169

def trace
  @trace
end

Class Method Details

.buffer_defaults ⇒ {Symbol => Object}

Returns a subset of defaults: those that Buffer cares about.

Returns:

  • ({Symbol => Object}) —

    The options hash

30
31
32
33
34
 
# File 'lib/haml/options.rb', line 30

def buffer_defaults
  @buffer_defaults ||= buffer_option_keys.inject({}) do |hash, key|
    hash.merge(key => defaults[key])
  end
end

.defaults

The default option values.

Returns:

  • Hash

15
16
17
 
# File 'lib/haml/options.rb', line 15

def defaults
  @defaults ||= Haml::TempleEngine.options.to_hash.merge(encoding: 'UTF-8')
end

.wrap(options) 

36
37
38
39
40
41
42
 
# File 'lib/haml/options.rb', line 36

def wrap(options)
  if options.is_a?(Options)
    options
  else
    Options.new(options)
  end
end

Instance Method Details

#[](key)

Retrieve an option value.

Parameters:

  • key —

    The value to retrieve.

182
183
184
 
# File 'lib/haml/options.rb', line 182

def [](key)
  send key
end

#[]=(key, value)

Set an option value.

Parameters:

  • key —

    The key to set.

  • value —

    The value to set for the key.

189
190
191
 
# File 'lib/haml/options.rb', line 189

def []=(key, value)
  send "#{key}=", value
end

#for_buffer ⇒ {Symbol => Object}

Returns a non-default subset of options: those that Buffer cares about. All of the values here are such that when #inspect is called on the hash, it can be Kernel#evaled to get the same result back.

See the Haml options documentation.

Returns:

  • ({Symbol => Object}) —

    The options hash

257
258
259
260
261
262
263
264
265
 
# File 'lib/haml/options.rb', line 257

def for_buffer
  self.class.buffer_option_keys.inject({}) do |hash, key|
    value = public_send(key)
    if self.class.buffer_defaults[key] != value
      hash[key] = value
    end
    hash
  end
end

#html4? ⇒ Boolean

Returns Whether or not the format is HTML4.

Returns:

  • (Boolean) —

    Whether or not the format is HTML4.

212
213
214
 
# File 'lib/haml/options.rb', line 212

def html4?
  format == :html4
end

#html5? ⇒ Boolean

Returns Whether or not the format is HTML5.

Returns:

  • (Boolean) —

    Whether or not the format is HTML5.

217
218
219
 
# File 'lib/haml/options.rb', line 217

def html5?
  format == :html5
end

#html? ⇒ Boolean

Returns Whether or not the format is any flavor of HTML.

Returns:

  • (Boolean) —

    Whether or not the format is any flavor of HTML.

207
208
209
 
# File 'lib/haml/options.rb', line 207

def html?
  html4? or html5?
end

#xhtml? ⇒ Boolean

Returns Whether or not the format is XHTML.

Returns:

  • (Boolean) —

    Whether or not the format is XHTML.

202
203
204
 
# File 'lib/haml/options.rb', line 202

def xhtml?
  not html?
end