[Truffle] Added a bunch of Zlib constants.

lib/ruby/truffle/truffle/zlib.rb

@@ -8,11 +8,47 @@
 
 module Zlib
 
+  BINARY = 0
+  ASCII = 1
+  UNKNOWN = 2
+
+  DEF_MEM_LEVEL = 8
+  MAX_MEM_LEVEL = 9
+
+  OS_MSDOS = 0
+  OS_AMIGA = 1
+  OS_VMS = 2
+  OS_CODE = 3
+  OS_UNIX = 3
+  OS_VMCMS = 4
+  OS_ATARI = 5
+  OS_OS2 = 6
+  OS_MACOS = 7
+  OS_ZSYSTEM = 8
+  OS_CPM = 9
+  OS_TOPS20 = 10
+  OS_WIN32 = 11
+  OS_QDOS = 12
+  OS_RISCOS = 13
+  OS_UNKNOWN = 255
+
+  DEFAULT_STRATEGY = 0
+  FILTERED = 1
+  HUFFMAN_ONLY = 2
+
+  NO_FLUSH = 0
+  SYNC_FUSH = 2
+  FULL_FLUSH = 3
+  FINISH = 4
+
   NO_COMPRESSION      =  0
   BEST_SPEED          =  1
   BEST_COMPRESSION    =  9
   DEFAULT_COMPRESSION = -1
 
+  MAX_WBITS = 15
+
+
   def self.crc32(*args)
     Truffle::Zlib.crc32(*args)
   end