* https://github.com/drbrain/marshal-structure
This gem is part of #rbxday, but instead of contributing to Rubinius, it mostly takes from Rubinius!
Dumps a tree based on the Marshal format. Supports the Marshal 4.8 format.
=== INSTALL
gem install marshal-structure
=== SYNOPSIS
From the command line:
ruby -rpp -rmarshal-structure \
-e 'pp Marshal::Structure.load Marshal.dump "hello"'
Fancier usage:
require 'pp'
require 'marshal-structure'
ms = Marshal::Structure.new Marshal.dump %w[hello world]
# print the Marshal stream structure
pp ms.construct
# print ruby objects in Marshal stream
pp ms.objects
=== EXAMPLE
str =
"\004\b{\006:\006a[\031c\006Bm\006C\"\006d/\006e\000i\006" \
"f\0322.2999999999999998\000ff" \
"l+\n\000\000\000\000\000\000\000\000\001\0000TF}\000i\000" \
"S:\006S\006:\006fi\000o:\vObject\000@\017" \
"U:\006M\"\021marshal_dump" \
"Iu:\006U\n_dump\006" \
":\026@ivar_on_dump_str\"\036value on ivar on dump str" \
";\000e:\006Eo;\b\000" \
"I\"\025string with ivar\006:\v@value\"\017some value" \
"C:\016BenString\"\000"
structure = Marshal::Structure.load str
pp structure
Prints:
[:hash,
0,
1,
[:symbol, 0, "a"],
[:array,
1,
20,
[:class, 2, "B"],
[:module, 3, "C"],
[:string, 4, "d"],
[:regexp, 5, "e", 0],
[:fixnum, 1],
[:float, 6, "2.2999999999999998\u0000ff"],
[:bignum, 7, 1, 10, 18446744073709551616],
:nil,
:true,
:false,
[:hash_default, 8, 0, [:fixnum, 0]],
[:struct, 9, [:symbol, 1, "S"], 1, [:symbol, 2, "f"], [:fixnum, 0]],
[:object, 10, [:symbol, 3, "Object"], [0]],
[:link, 10],
[:user_marshal, 11, [:symbol, 4, "M"], [:string, 12, "marshal_dump"]],
[:instance_variables,
[:user_defined, 13, [:symbol, 5, "U"], "_dump"],
1,
[:symbol, 6, "@ivar_on_dump_str"],
[:string, 14, "value on ivar on dump str"]],
[:symbol_link, 0],
[:extended, [:symbol, 7, "E"], [:object, 15, [:symbol_link, 3], [0]]],
[:instance_variables,
[:string, 16, "string with ivar"],
1,
[:symbol, 8, "@value"],
[:string, 17, "some value"]],
[:user_class, [:symbol, 9, "BenString"], [:string, 18, ""]]]]