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module Linguist
module Strategy
# Detects language based on filename
class Filename
# Public: Use the filename to detect the blob's language.
#
# blob - An object that quacks like a blob.
# candidates - A list of candidate languages.
#
# Examples
#
# Filename.call(FileBlob.new("path/to/file"))
#
# Returns an array of languages with a associated blob's filename.
# Selected languages must be in the candidate list, except if it's empty,
# in which case any language is a valid candidate.
def self.call(blob, candidates)
name = blob.name.to_s
languages = Language.find_by_filename(name)
candidates.any? ? candidates & languages : languages
end
end
end
end
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