Add some utility functions for reading big-endian and little-endian d…

…ata.
dewyatt · Dec 21, 2016 · f3297b0 · f3297b0
1 parent 76ba4f9
commit f3297b0
Showing 1 changed file with 28 additions and 0 deletions.
diff --git a/lib/read_utils.rb b/lib/read_utils.rb
@@ -0,0 +1,28 @@
+def read8(io)
+  io.read(1).unpack('C')[0]
+end
+
+def read16le(io)
+  io.read(2).unpack('S<')[0]
+end
+
+def read16be(io)
+  io.read(2).unpack('S>')[0]
+end
+
+def read32le(io)
+  io.read(4).unpack('L<')[0]
+end
+
+def read32be(io)
+  io.read(4).unpack('L>')[0]
+end
+
+def read64le(io)
+  io.read(8).unpack('Q<')[0]
+end
+
+def read64be(io)
+  io.read(8).unpack('Q>')[0]
+end
+