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           // Author: Mike Brasher (mbrasher@bmc.com)
33           //
34 mike  1.1 //%/////////////////////////////////////////////////////////////////////////////
35           
36           #include "ObjectCache.h"
37           
38           PEGASUS_NAMESPACE_BEGIN
39           
40           const Uint8 _toLowerTable[256] = 
41           {
42               0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,
43               0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,
44               0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,
45               0x18,0x19,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,
46               0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,
47               0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,
48               0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,
49               0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,
50               0x40,0x61,0x62,0x63,0x64,0x65,0x66,0x67,
51               0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,
52               0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,
53               0x78,0x79,0x7A,0x5B,0x5C,0x5D,0x5E,0x5F,
54               0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,
55 mike  1.1     0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,
56               0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,
57               0x78,0x79,0x7A,0x7B,0x7C,0x7D,0x7E,0x7F,
58               0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,
59               0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,
60               0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,
61               0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,
62               0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,
63               0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,
64               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,
65               0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF,
66               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,
67               0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,
68               0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,
69               0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF,
70               0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,
71               0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,
72               0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,
73               0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF,
74           };
75           
76 mike  1.1 Uint32 ObjectCacheHash(const String& str)
77           {
78               Uint16* p = (Uint16*)str.getChar16Data();
79               Uint32 h = 0;
80               Uint32 n = str.size();
81           
82               while (n >= 4)
83               {
84           	h = ((h << 9) | (h >> 23)) ^ (Uint32)_toLowerTable[p[0] & 0x007F];
85           	h = ((h << 9) | (h >> 23)) ^ (Uint32)_toLowerTable[p[1] & 0x007F];
86           	h = ((h << 9) | (h >> 23)) ^ (Uint32)_toLowerTable[p[2] & 0x007F];
87           	h = ((h << 9) | (h >> 23)) ^ (Uint32)_toLowerTable[p[3] & 0x007F];
88           	n -= 4;
89           	p += 4;
90               }
91           
92               while (*p)
93           	h = ((h << 9) | (h >> 23)) ^ (Uint32)_toLowerTable[*p++ & 0x007F];
94           
95               return h;
96           }
97 mike  1.1 
98           PEGASUS_NAMESPACE_END