Class: Vectory::FileMagic
- Inherits:
-
Object
- Object
- Vectory::FileMagic
- Defined in:
- lib/vectory/file_magic.rb
Constant Summary collapse
- EPS_30_MAGIC =
"\x25\x21\x50\x53\x2d\x41\x64\x6f\x62\x65\x2d\x33\x2e\x30" \ "\x20\x45\x50\x53\x46\x2d\x33\x2e\x30" .force_encoding("BINARY")
- EPS_31_MAGIC =
"\x25\x21\x50\x53\x2d\x41\x64\x6f\x62\x65\x2d\x33\x2e\x31" \ "\x20\x45\x50\x53\x46\x2d\x33\x2e\x30" .force_encoding("BINARY")
- PS_MAGIC =
"\x25\x21\x50\x53\x2d\x41\x64\x6f\x62\x65\x2d\x33\x2e\x30" .force_encoding("BINARY")
- EMF_MAGIC =
"\x01\x00\x00\x00".force_encoding("BINARY")
Class Method Summary collapse
Instance Method Summary collapse
- #detect ⇒ Object
-
#initialize(path) ⇒ FileMagic
constructor
A new instance of FileMagic.
Constructor Details
#initialize(path) ⇒ FileMagic
Returns a new instance of FileMagic.
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# File 'lib/vectory/file_magic.rb', line 20 def initialize(path) @path = path end |
Class Method Details
.detect(path) ⇒ Object
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# File 'lib/vectory/file_magic.rb', line 16 def self.detect(path) new(path).detect end |
Instance Method Details
#detect ⇒ Object
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# File 'lib/vectory/file_magic.rb', line 24 def detect beginning = File.read(@path, 100, mode: "rb") eps_slice = beginning.byteslice(0, EPS_30_MAGIC.size) Vectory.ui.debug("File magic is '#{to_bytes(beginning)}' of '#{@path}'.") return :eps if [EPS_30_MAGIC, EPS_31_MAGIC].include?(eps_slice) ps_slice = beginning.byteslice(0, PS_MAGIC.size) return :ps if ps_slice == PS_MAGIC emf_slice = beginning.byteslice(0, EMF_MAGIC.size) return :emf if emf_slice == EMF_MAGIC return :svg if contain_svg_tag? end |