Class: Deface::DSL::Loader

Inherits:
Object
  • Object
show all
Defined in:
lib/deface/dsl/loader.rb

Class Method Summary collapse

Class Method Details

.build_context(context_name, filename, file_contents) ⇒ Object 



26
27
28
 
# File 'lib/deface/dsl/loader.rb', line 26

def self.build_context(context_name, filename, file_contents)
  send build_context_method_name(context_name), context_name, filename, file_contents
end

.build_context_and_extract_dsl_from(type, context_name, filename, file_contents) ⇒ Object 



48
49
50
51
52
53
54
55
56
57
 
# File 'lib/deface/dsl/loader.rb', line 48

def self.build_context_and_extract_dsl_from(type, context_name, filename, file_contents)
  dsl_commands, the_rest = send "extract_dsl_commands_from_#{type}", (file_contents)

  context_name = context_name.gsub(".html.#{type}", '')
  context = Context.new(context_name)
  context.virtual_path(determine_virtual_path(filename))
  context.instance_eval(dsl_commands)
  context.send type, the_rest
  context.create_override
end

.build_context_method_name(context_name) ⇒ Object 



30
31
32
33
34
 
# File 'lib/deface/dsl/loader.rb', line 30

def self.build_context_method_name(context_name)
  ext = File.extname(context_name).gsub(".", '')
  ext = "other" if ext.empty?
  "build_#{ext}_context"
end

.build_erb_context(context_name, filename, file_contents) ⇒ Object 



36
37
38
 
# File 'lib/deface/dsl/loader.rb', line 36

def self.build_erb_context(context_name, filename, file_contents)
  build_context_and_extract_dsl_from('erb', context_name, filename, file_contents)
end

.build_haml_context(context_name, filename, file_contents) ⇒ Object 



40
41
42
 
# File 'lib/deface/dsl/loader.rb', line 40

def self.build_haml_context(context_name, filename, file_contents)
  build_context_and_extract_dsl_from('haml', context_name, filename, file_contents)
end

.build_other_context(context_name, filename, file_contents) ⇒ Object 



59
60
61
62
63
64
 
# File 'lib/deface/dsl/loader.rb', line 59

def self.build_other_context(context_name, filename, file_contents)
  context = Context.new(context_name)
  context.virtual_path(determine_virtual_path(filename))
  context.instance_eval(file_contents)
  context.create_override
end

.build_slim_context(context_name, filename, file_contents) ⇒ Object 



44
45
46
 
# File 'lib/deface/dsl/loader.rb', line 44

def self.build_slim_context(context_name, filename, file_contents)
  build_context_and_extract_dsl_from('slim', context_name, filename, file_contents)
end

.extract_dsl_commands_from_erb(html_file_contents) ⇒ Object 



70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
 
# File 'lib/deface/dsl/loader.rb', line 70

def self.extract_dsl_commands_from_erb(html_file_contents)
  dsl_commands = ''

  while starts_with_html_comment?(html_file_contents)
    first_open_comment_index = html_file_contents.lstrip.index('<!--')
    first_close_comment_index = html_file_contents.index('-->')

    unless first_close_comment_index.nil?
      comment = html_file_contents[first_open_comment_index..first_close_comment_index+2]
    end

    comment.gsub('<!--', '').gsub('-->', '').strip.scan(/[^\s"']+|"[^"]*"|'[^']*'/).each do |part|

      dsl_commands =~ /('|")\z/ || part =~ /\A[^\d:='"%]/ ? dsl_commands << "\n" : dsl_commands << ' '
      dsl_commands << part
    end

    html_file_contents = html_file_contents.gsub(comment, '')
  end

  [dsl_commands, html_file_contents]
end

.extract_dsl_commands_from_haml(file_contents) ⇒ Object Also known as: extract_dsl_commands_from_slim 



93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
 
# File 'lib/deface/dsl/loader.rb', line 93

def self.extract_dsl_commands_from_haml(file_contents)
  dsl_commands = ''

  while starts_with_haml_comment?(file_contents)
    first_open_comment_index = file_contents.lstrip.index('/')
    first_close_comment_index = file_contents.index("\n")

    unless first_close_comment_index.nil?
      comment = file_contents[first_open_comment_index..first_close_comment_index]
    end

    dsl_commands << comment.gsub('/', '').strip + "\n"

    file_contents = file_contents.gsub(comment, '')

    while file_contents.start_with?(' ')
      first_newline_index = file_contents.index("\n")
      comment = file_contents[0..first_newline_index]
      dsl_commands << comment.gsub('/', '').strip + "\n"
      file_contents = file_contents.gsub(comment, '')
    end
  end

  [dsl_commands, file_contents]
end

.load(filename, options = nil, &block) ⇒ Object 



8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
# File 'lib/deface/dsl/loader.rb', line 8

def self.load(filename, options = nil, &block)
  unless File.basename(filename) =~ /^[^\.]+(.html.(erb|haml|slim)){0,1}.deface$/
    raise "Deface::DSL does not know how to read '#{filename}'. Override files should end with just .deface, .html.erb.deface, .html.haml.deface or .html.slim.deface"
  end

  unless file_in_dir_below_overrides?(filename)
    raise "Deface::DSL overrides must be in a sub-directory that matches the views virtual path. Move '#{filename}' into a sub-directory."
  end

  File.open(filename) do |file|
    context_name = File.basename(filename).gsub('.deface', '')

    file_contents = file.read

    build_context(context_name, filename, file_contents)
  end
end

.register ⇒ Object 



66
67
68
 
# File 'lib/deface/dsl/loader.rb', line 66

def self.register
  Polyglot.register('deface', Deface::DSL::Loader)
end