blob: 1093ab2888e08f501208b61ffc76c58f9116f358 (
plain)
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
|
package com.xagasoft.gats;
import java.io.OutputStream;
import java.io.InputStream;
public class GatsInteger extends GatsObject
{
private long iValue = 0;
public GatsInteger()
{
}
public GatsInteger( long iValue )
{
this.iValue = iValue;
}
public long getValue()
{
return iValue;
}
public void setValue( long iValue )
{
this.iValue = iValue;
}
public int getType()
{
return GatsObject.INTEGER;
};
public void read( InputStream is, char cType ) throws java.io.IOException
{
iValue = readPackedInt( is );
}
public void write( OutputStream os ) throws java.io.IOException
{
os.write( (int)'i' );
writePackedInt( os, iValue );
}
/**
* Possible TODO: have this return a Number, and construct either a Long
* or BigInteger when appropriate.
*/
public static long readPackedInt( InputStream is ) throws java.io.IOException
{
int b;
long rOut = 0;
boolean bNeg;
b = is.read();
bNeg = (b&0x40) == 0x40;
rOut |= b&0x3F;
int c = 0;
while( (b&0x80) == 0x80 )
{
b = is.read();
rOut |= (long)(b&0x7F) << (6+7*(c++));
}
if( bNeg )
return -rOut;
return rOut;
}
public static void writePackedInt( OutputStream os, long iIn ) throws java.io.IOException
{
int b;
if( iIn < 0 )
{
iIn = -iIn;
b = (int)(iIn&0x3F);
if( iIn > b )
b |= 0x80 | 0x40;
else
b |= 0x40;
}
else
{
b = (int)(iIn&0x3F);
if( iIn > b )
b |= 0x80;
}
os.write( b );
iIn = iIn >> 6;
while( iIn > 0 )
{
b = (int)(iIn&0x7F);
if( iIn > b )
b |= 0x80;
os.write( b );
iIn = iIn >> 7;
}
}
};
|
