Class: Chef::Attribute::Validator::WildcardExpander
- Inherits:
-
Object
- Object
- Chef::Attribute::Validator::WildcardExpander
- Defined in:
- lib/chef-attribute-validator/wildcard_expander.rb,
lib/chef-attribute-validator/wildcard_expander/brutal_regex.rb,
lib/chef-attribute-validator/wildcard_expander/no_wildcards.rb
Direct Known Subclasses
Defined Under Namespace
Classes: BrutalRegex, NoWildcards
Instance Attribute Summary collapse
-
#node ⇒ Object
Returns the value of attribute node.
-
#path_spec ⇒ Object
Returns the value of attribute path_spec.
Class Method Summary collapse
Instance Method Summary collapse
- #convert_step_to_integer(step) ⇒ Object
-
#fetch_val_by_slashpath(slashpath) ⇒ Object
Note: does not handle missing values correctly!.
-
#initialize(a_path_spec, a_node) ⇒ WildcardExpander
constructor
A new instance of WildcardExpander.
- #path_contains_wildcards?(path) ⇒ Boolean
- #path_exists_by_slashpath?(slashpath) ⇒ Boolean
- #slashpath_to_steps(slashpath) ⇒ Object
Constructor Details
#initialize(a_path_spec, a_node) ⇒ WildcardExpander
Returns a new instance of WildcardExpander.
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# File 'lib/chef-attribute-validator/wildcard_expander.rb', line 10 def initialize(a_path_spec, a_node) @path_spec = a_path_spec @node = a_node end |
Instance Attribute Details
#node ⇒ Object
Returns the value of attribute node.
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# File 'lib/chef-attribute-validator/wildcard_expander.rb', line 8 def node @node end |
#path_spec ⇒ Object
Returns the value of attribute path_spec.
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# File 'lib/chef-attribute-validator/wildcard_expander.rb', line 7 def path_spec @path_spec end |
Class Method Details
.choose(path_spec, node) ⇒ Object
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# File 'lib/chef-attribute-validator/wildcard_expander.rb', line 15 def self.choose(path_spec, node) # Ruby is an excellent language in which to write Perl @@subclasses.map {|k| k.new(path_spec, node) }.map {|e| [e, e.suitability]}.sort { |a,b| b[1] <=> a[1] }.map {|e| e[0]}.first end |
Instance Method Details
#convert_step_to_integer(step) ⇒ Object
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# File 'lib/chef-attribute-validator/wildcard_expander.rb', line 45 def convert_step_to_integer(step) if step.match(/^\d+$/) then # Treat things that start with leading zeros as strings, not as integers. This supports # having attributes like '00', and calling that an error if you try to access the 00 element of an array. return nil if step.match(/^0+\d+$/) return step.to_i else return nil end end |
#fetch_val_by_slashpath(slashpath) ⇒ Object
Note: does not handle missing values correctly!
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# File 'lib/chef-attribute-validator/wildcard_expander.rb', line 31 def fetch_val_by_slashpath(slashpath) nv = node steps = slashpath_to_steps(slashpath) while steps.size > 0 step = steps.shift if nv.kind_of?(Chef::Node::ImmutableArray) then step = convert_step_to_integer(step) return nil if step.nil? # Given a non-int path step for an array... end nv = nv[step] end nv end |
#path_contains_wildcards?(path) ⇒ Boolean
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# File 'lib/chef-attribute-validator/wildcard_expander.rb', line 90 def path_contains_wildcards?(path) [ /\*/, /\*\*/, /\?/, /\[\w+\]/, /\{\w+(\s*,\s*\w+)?\}/, ].any? { |r| r.match(path) } end |
#path_exists_by_slashpath?(slashpath) ⇒ Boolean
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# File 'lib/chef-attribute-validator/wildcard_expander.rb', line 56 def path_exists_by_slashpath? (slashpath) nv = node steps = slashpath_to_steps(slashpath) while steps.size > 0 step = steps.shift if nv.kind_of?(Chef::Node::ImmutableArray) then step_as_int = convert_step_to_integer(step) return false if step_as_int.nil? # Given a non-int path step for an array... if nv.size > step_as_int then nv = nv[step_as_int] else # Array not long enough return false end elsif nv.respond_to?(:has_key?) then if nv.has_key?(step) then nv = nv[step] else # No such key return false end else # Must be a scalar? return false end end return true end |
#slashpath_to_steps(slashpath) ⇒ Object
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# File 'lib/chef-attribute-validator/wildcard_expander.rb', line 20 def slashpath_to_steps(slashpath) steps = slashpath.split('/') # Since we begin with /, the first element is "" if steps[0] == "" then steps.shift end steps end |