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Contents
module Linguist
module Strategy
class Modeline
EmacsModeline = /-\*-\s*(?:(?!mode)[\w-]+\s*:\s*(?:[\w+-]+)\s*;?\s*)*(?:mode\s*:)?\s*([\w+-]+)\s*(?:;\s*(?!mode)[\w-]+\s*:\s*[\w+-]+\s*)*;?\s*-\*-/i
VimModeline = /vim:\s*set.*\s(?:ft|filetype)=(\w+)\s?.*:/i
# Public: Detects language based on Vim and Emacs modelines
#
# blob - An object that quacks like a blob.
#
# Examples
#
# Modeline.call(FileBlob.new("path/to/file"))
#
# Returns an Array with one Language if the blob has a Vim or Emacs modeline
# that matches a Language name or alias. Returns an empty array if no match.
def self.call(blob, _ = nil)
Array(Language.find_by_alias(modeline(blob.data)))
end
# Public: Get the modeline from the first n-lines of the file
#
# Returns a String or nil
def self.modeline(data)
match = data.match(EmacsModeline) || data.match(VimModeline)
match[1] if match
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems