1 karl  1.2 //%2006////////////////////////////////////////////////////////////////////////

 2 mike  1.1 //
 3           // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
 4           // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
 5           // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
 6           // IBM Corp.; EMC Corporation, The Open Group.
 7           // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
 8           // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
 9           // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
10           // EMC Corporation; VERITAS Software Corporation; The Open Group.

11 karl  1.2 // Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.;
12           // EMC Corporation; Symantec Corporation; The Open Group.

13 mike  1.1 //
14           // Permission is hereby granted, free of charge, to any person obtaining a copy
15           // of this software and associated documentation files (the "Software"), to
16           // deal in the Software without restriction, including without limitation the
17           // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
18           // sell copies of the Software, and to permit persons to whom the Software is
19           // furnished to do so, subject to the following conditions:
20           // 
21           // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
22           // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
23           // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
24           // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
25           // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
26           // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
27           // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28           // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29           //
30           //==============================================================================
31           //
32           //%/////////////////////////////////////////////////////////////////////////////
33           
34 mike  1.1 #include "ObjectCache.h"
35           
36           PEGASUS_NAMESPACE_BEGIN
37           

38 kumpf 1.3 const Uint8 _toLowerTable[256] =

39 mike  1.1 {
40               0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,
41               0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,
42               0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,
43               0x18,0x19,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,
44               0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,
45               0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,
46               0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,
47               0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,
48               0x40,0x61,0x62,0x63,0x64,0x65,0x66,0x67,
49               0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,
50               0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,
51               0x78,0x79,0x7A,0x5B,0x5C,0x5D,0x5E,0x5F,
52               0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,
53               0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,
54               0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,
55               0x78,0x79,0x7A,0x7B,0x7C,0x7D,0x7E,0x7F,
56               0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,
57               0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,
58               0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,
59               0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,
60 mike  1.1     0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,
61               0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,
62               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,
63               0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF,
64               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,
65               0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,
66               0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,
67               0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF,
68               0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,
69               0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,
70               0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,
71               0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF,
72           };
73           
74           Uint32 ObjectCacheHash(const String& str)
75           {
76               Uint16* p = (Uint16*)str.getChar16Data();
77               Uint32 h = 0;
78               Uint32 n = str.size();
79           
80               while (n >= 4)
81 mike  1.1     {

82 kumpf 1.3         h = ((h << 9) | (h >> 23)) ^ (Uint32)_toLowerTable[p[0] & 0x007F];
83                   h = ((h << 9) | (h >> 23)) ^ (Uint32)_toLowerTable[p[1] & 0x007F];
84                   h = ((h << 9) | (h >> 23)) ^ (Uint32)_toLowerTable[p[2] & 0x007F];
85                   h = ((h << 9) | (h >> 23)) ^ (Uint32)_toLowerTable[p[3] & 0x007F];
86                   n -= 4;
87                   p += 4;

88 mike  1.1     }
89           
90               while (*p)

91 kumpf 1.3         h = ((h << 9) | (h >> 23)) ^ (Uint32)_toLowerTable[*p++ & 0x007F];

92 mike  1.1 
93               return h;
94           }
95           
96           PEGASUS_NAMESPACE_END