Module: Npy
- Defined in:
- lib/npy.rb,
lib/npy/file.rb,
lib/npy/version.rb
Defined Under Namespace
Constant Summary collapse
- MAGIC_STR =
"\x93NUMPY".b
- TYPE_MAP =
{ "|i1" => Numo::Int8, "<i2" => Numo::Int16, "<i4" => Numo::Int32, "<i8" => Numo::Int64, "|u1" => Numo::UInt8, "<u2" => Numo::UInt16, "<u4" => Numo::UInt32, "<u8" => Numo::UInt64, "<f4" => Numo::SFloat, "<f8" => Numo::DFloat, "<c8" => Numo::SComplex, "<c16" => Numo::DComplex }
- VERSION =
"0.1.2"
Class Method Summary collapse
- .load(path) ⇒ Object
-
.load_io(io) ⇒ Object
TODO make private.
- .load_npz(path) ⇒ Object
-
.load_npz_io(io) ⇒ Object
TODO make private.
- .load_npz_string(byte_str) ⇒ Object
- .load_string(byte_str) ⇒ Object
- .save(path, arr) ⇒ Object
- .save_npz(path, arrs) ⇒ Object
Class Method Details
.load(path) ⇒ Object
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# File 'lib/npy.rb', line 34 def load(path) case path when IO, StringIO load_io(path) else load_file(path) end end |
.load_io(io) ⇒ Object
TODO make private
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# File 'lib/npy.rb', line 69 def load_io(io) magic = io.read(6) raise Error, "Invalid npy format" unless magic&.b == MAGIC_STR version = io.read(2) header_len = case version when "\x01\x00".b io.read(2).unpack1("S<") when "\x02\x00".b, "\x03\x00".b io.read(4).unpack1("I<") else raise Error, "Unsupported version" end header = io.read(header_len) descr, fortran_order, shape = parse_header(header) raise Error, "Fortran order not supported" if fortran_order # numo can't handle empty shapes empty_shape = shape.empty? shape = [1] if empty_shape klass = TYPE_MAP[descr] raise Error, "Type not supported: #{descr}" unless klass # use from_string instead of from_binary for max compatibility # from_binary introduced in 0.9.0.4 result = klass.from_string(io.read, shape) result = result[0] if empty_shape result end |
.load_npz(path) ⇒ Object
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# File 'lib/npy.rb', line 43 def load_npz(path) case path when IO, StringIO load_npz_io(path) else load_npz_file(path) end end |
.load_npz_io(io) ⇒ Object
TODO make private
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# File 'lib/npy.rb', line 103 def load_npz_io(io) File.new(io) end |
.load_npz_string(byte_str) ⇒ Object
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# File 'lib/npy.rb', line 56 def load_npz_string(byte_str) # not playing nicely with StringIO file = Tempfile.new("npy") begin file.write(byte_str) load_npz_io(file) ensure file.close file.unlink end end |
.load_string(byte_str) ⇒ Object
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# File 'lib/npy.rb', line 52 def load_string(byte_str) load_io(StringIO.new(byte_str)) end |
.save(path, arr) ⇒ Object
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# File 'lib/npy.rb', line 107 def save(path, arr) case path when IO, StringIO save_io(path, arr) else save_file(path, arr) end true end |
.save_npz(path, arrs) ⇒ Object
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# File 'lib/npy.rb', line 117 def save_npz(path, arrs) case path when IO, StringIO save_npz_io(path, arrs) else save_npz_file(path, arrs) end true end |