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class Guff::Magic
def initialize(
flags : Int32 = LibMagic::Flags::MIME,
db_path : String? = nil
)
@closed = false
@magic = LibMagic.magic_open(flags)
raise "magic_open() failed" unless @magic
# load database
load(db_path)
end
def self.get_mime_type(path : String)
magic = new
r = magic.file(path)
magic.close
# return result
r
end
private def load(path : String? = nil) : Void
err = LibMagic.magic_load(@magic, nil)
raise "magic_load() failed: " + error if err != 0
end
def file(path : String) : String
raise "closed" if closed?
r = LibMagic.magic_file(@magic, path)
raise "magic_file() failed: " + error unless r
String.new(r)
end
def close
raise "closed" if closed?
LibMagic.magic_close(@magic)
@closed = true
end
def closed?
@closed
end
def error : String
raise "closed" if closed?
String.new(LibMagic.magic_error(@magic))
end
end
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