version 3.9.0

2017-07-05 01:37:28 +09:00
commit 1a1bed5302
910 changed files with 1434 additions and 0 deletions
@@ -0,0 +1,118 @@
+require 'bin_utils'
+
+module Mikunyan
+    class BinaryReader
+        attr_accessor :endian, :pos, :length
+
+        def initialize(data, endian = :big)
+            @data = data
+            @pos = 0
+            @length = data.bytesize
+            @endian = endian
+        end
+
+        def little?
+            @endian == :little
+        end
+
+        def jmp(pos = 0)
+            @pos = pos
+        end
+
+        def adv(size = 0)
+            @pos += size
+        end
+
+        def align(size)
+            @pos = (@pos + size - 1) / size * size
+        end
+
+        def read(size)
+            data = @data.byteslice(@pos, size)
+            @pos += size
+            data
+        end
+
+        def cstr
+            r = @data.unpack("@#{pos}Z*")[0]
+            @pos += r.bytesize + 1
+            r
+        end
+
+        def i8
+            i8s
+        end
+
+        def i8s
+            r = BinUtils.get_sint8(@data, @pos)
+            @pos += 1
+            r
+        end
+
+        def i8u
+            r = BinUtils.get_int8(@data, @pos)
+            @pos += 1
+            r
+        end
+
+        def i16
+            i16s
+        end
+
+        def i16s
+            r = little? ? BinUtils.get_sint16_le(@data, @pos) : BinUtils.get_sint16_be(@data, @pos)
+            @pos += 2
+            r
+        end
+
+        def i16u
+            r = little? ? BinUtils.get_int16_le(@data, @pos) : BinUtils.get_int16_be(@data, @pos)
+            @pos += 2
+            r
+        end
+
+        def i32
+            i32s
+        end
+
+        def i32s
+            r = little? ? BinUtils.get_sint32_le(@data, @pos) : BinUtils.get_sint32_be(@data, @pos)
+            @pos += 4
+            r
+        end
+
+        def i32u
+            r = little? ? BinUtils.get_int32_le(@data, @pos) : BinUtils.get_int32_be(@data, @pos)
+            @pos += 4
+            r
+        end
+
+        def i64
+            i64s
+        end
+
+        def i64s
+            r = little? ? BinUtils.get_sint64_le(@data, @pos) : BinUtils.get_sint64_be(@data, @pos)
+            @pos += 8
+            r
+        end
+
+        def i64u
+            r = little? ? BinUtils.get_int64_le(@data, @pos) : BinUtils.get_int64_be(@data, @pos)
+            @pos += 8
+            r
+        end
+
+        def float
+            r = little? ? @data.byteslice(@pos, 4).unpack('e')[0] : @data.byteslice(@pos, 4).unpack('g')[0]
+            @pos += 4
+            r
+        end
+
+        def double
+            r = little? ? @data.byteslice(@pos, 8).unpack('E')[0] : @data.byteslice(@pos, 8).unpack('G')[0]
+            @pos += 8
+            r
+        end
+    end
+end