class RPath::Adapters::Filesystem
Constants
- ATTRIBUTES
Attributes that may be passed as names to {#attribute}
Public Instance Methods
adapts?(graph)
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Always false. The filesystem adapter must be specified in calls to {#RPath}. @param [Object] graph @return [Boolean]
# File lib/rpath/adapters/filesystem.rb, line 12 def adapts?(graph) false end
adjacent(vertex)
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@param [String] vertex
A filesystem path
@return [Array<String>]
Returns the expanded paths of the directory entries. An empty array if +vertex+ is a file.
# File lib/rpath/adapters/filesystem.rb, line 29 def adjacent(vertex) begin entries = Dir.entries(File.expand_path(vertex)) rescue SystemCallError return [] end entries.collect { |entry| File.join(vertex, entry) } end
attribute(vertex, name)
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@param [String] vertex
A filesystem path
@param [String, Symbol] name
An attribute in {ATTRIBUTES}
@return [Object, nil]
Returns the value of the attribute; +nil+ if the attribute is invalid.
# File lib/rpath/adapters/filesystem.rb, line 46 def attribute(vertex, name) if ATTRIBUTES.include?(name.to_s) begin Pathname(File.expand_path(vertex)).send(name) rescue SystemCallError nil end else nil end end
content(vertex)
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@param [String] vertex
A filesystem path
@return [String, nil]
Returns the contents if +vertex+ is a file; otherwise +nil+.
# File lib/rpath/adapters/filesystem.rb, line 62 def content(vertex) begin File.read File.expand_path(vertex) rescue SystemCallError nil end end
name(vertex)
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@param [String] vertex
A filesystem path
@return [String]
Returns the basename
# File lib/rpath/adapters/filesystem.rb, line 20 def name(vertex) File.basename vertex end