1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
require 'dl'
module DL
module PackInfo
if( defined?(TYPE_LONG_LONG) )
ALIGN_MAP = {
TYPE_VOIDP => ALIGN_VOIDP,
TYPE_CHAR => ALIGN_CHAR,
TYPE_SHORT => ALIGN_SHORT,
TYPE_INT => ALIGN_INT,
TYPE_LONG => ALIGN_LONG,
TYPE_LONG_LONG => ALIGN_LONG_LONG,
TYPE_FLOAT => ALIGN_FLOAT,
TYPE_DOUBLE => ALIGN_DOUBLE,
-TYPE_CHAR => ALIGN_CHAR,
-TYPE_SHORT => ALIGN_SHORT,
-TYPE_INT => ALIGN_INT,
-TYPE_LONG => ALIGN_LONG,
-TYPE_LONG_LONG => ALIGN_LONG_LONG,
}
PACK_MAP = {
TYPE_VOIDP => ((SIZEOF_VOIDP == SIZEOF_LONG_LONG) ? "q" : "l!"),
TYPE_CHAR => "c",
TYPE_SHORT => "s!",
TYPE_INT => "i!",
TYPE_LONG => "l!",
TYPE_LONG_LONG => "q",
TYPE_FLOAT => "f",
TYPE_DOUBLE => "d",
-TYPE_CHAR => "c",
-TYPE_SHORT => "s!",
-TYPE_INT => "i!",
-TYPE_LONG => "l!",
-TYPE_LONG_LONG => "q",
}
SIZE_MAP = {
TYPE_VOIDP => SIZEOF_VOIDP,
TYPE_CHAR => SIZEOF_CHAR,
TYPE_SHORT => SIZEOF_SHORT,
TYPE_INT => SIZEOF_INT,
TYPE_LONG => SIZEOF_LONG,
TYPE_LONG_LONG => SIZEOF_LONG_LONG,
TYPE_FLOAT => SIZEOF_FLOAT,
TYPE_DOUBLE => SIZEOF_DOUBLE,
-TYPE_CHAR => SIZEOF_CHAR,
-TYPE_SHORT => SIZEOF_SHORT,
-TYPE_INT => SIZEOF_INT,
-TYPE_LONG => SIZEOF_LONG,
-TYPE_LONG_LONG => SIZEOF_LONG_LONG,
}
else
ALIGN_MAP = {
TYPE_VOIDP => ALIGN_VOIDP,
TYPE_CHAR => ALIGN_CHAR,
TYPE_SHORT => ALIGN_SHORT,
TYPE_INT => ALIGN_INT,
TYPE_LONG => ALIGN_LONG,
TYPE_FLOAT => ALIGN_FLOAT,
TYPE_DOUBLE => ALIGN_DOUBLE,
-TYPE_CHAR => ALIGN_CHAR,
-TYPE_SHORT => ALIGN_SHORT,
-TYPE_INT => ALIGN_INT,
-TYPE_LONG => ALIGN_LONG,
}
PACK_MAP = {
TYPE_VOIDP => ((SIZEOF_VOIDP == SIZEOF_LONG_LONG) ? "q" : "l!"),
TYPE_CHAR => "c",
TYPE_SHORT => "s!",
TYPE_INT => "i!",
TYPE_LONG => "l!",
TYPE_FLOAT => "f",
TYPE_DOUBLE => "d",
-TYPE_CHAR => "c",
-TYPE_SHORT => "s!",
-TYPE_INT => "i!",
-TYPE_LONG => "l!",
}
SIZE_MAP = {
TYPE_VOIDP => SIZEOF_VOIDP,
TYPE_CHAR => SIZEOF_CHAR,
TYPE_SHORT => SIZEOF_SHORT,
TYPE_INT => SIZEOF_INT,
TYPE_LONG => SIZEOF_LONG,
TYPE_FLOAT => SIZEOF_FLOAT,
TYPE_DOUBLE => SIZEOF_DOUBLE,
-TYPE_CHAR => SIZEOF_CHAR,
-TYPE_SHORT => SIZEOF_SHORT,
-TYPE_INT => SIZEOF_INT,
-TYPE_LONG => SIZEOF_LONG,
}
end
def align(addr, align)
d = addr % align
if( d == 0 )
addr
else
addr + (align - d)
end
end
module_function :align
end
class Packer
include PackInfo
def Packer.[](*types)
Packer.new(types)
end
def initialize(types)
parse_types(types)
end
def size()
@size
end
def pack(ary)
case SIZEOF_VOIDP
when SIZEOF_LONG
ary.pack(@template)
when SIZEOF_LONG
ary.pack(@template)
else
raise(RuntimeError, "sizeof(void*)?")
end
end
def unpack(ary)
case SIZEOF_VOIDP
when SIZEOF_LONG
ary.join().unpack(@template)
when SIZEOF_LONG_LONG
ary.join().unpack(@template)
else
raise(RuntimeError, "sizeof(void*)?")
end
end
private
def parse_types(types)
@template = ""
addr = 0
types.each{|t|
orig_addr = addr
if( t.is_a?(Array) )
addr = align(orig_addr, ALIGN_MAP[TYPE_VOIDP])
else
addr = align(orig_addr, ALIGN_MAP[t])
end
d = addr - orig_addr
if( d > 0 )
@template << "x#{d}"
end
if( t.is_a?(Array) )
@template << (PACK_MAP[t[0]] * t[1])
addr += (SIZE_MAP[t[0]] * t[1])
else
@template << PACK_MAP[t]
addr += SIZE_MAP[t]
end
}
addr = align(addr, ALIGN_MAP[TYPE_VOIDP])
@size = addr
end
end
end
|
