2 * CDE - Common Desktop Environment
4 * Copyright (c) 1993-2012, The Open Group. All rights reserved.
6 * These libraries and programs are free software; you can
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8 * Lesser General Public License as published by the Free Software
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12 * These libraries and programs are distributed in the hope that
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15 * PURPOSE. See the GNU Lesser General Public License for more
18 * You should have received a copy of the GNU Lesser General Public
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20 * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
21 * Floor, Boston, MA 02110-1301 USA
27 * $XConsortium: ObjectKey.C /main/4 1996/04/21 19:48:43 drk $
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33 * HP, IBM, Sun, USL, SCO and Univel. Do not distribute this
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39 * Copyright 1993 Sun Microsystems, Inc. All rights reserved.
46 #include <DtMail/ObjectKey.hh>
48 ObjectKey::ObjectKey(ObjectKeyType type)
54 ObjectKey::ObjectKey(ObjectKey & key)
56 _type = strdup(key._type);
59 ObjectKey::~ObjectKey(void)
66 ObjectKey::operator==(ObjectKey &)
68 assert(!"Pure virtual ObjectKey::operator== called");
73 ObjectKey::operator!=(ObjectKey &)
75 assert(!"Pure virtual ObjectKey::operator!= called\n");
80 ObjectKey::operator<(ObjectKey &)
82 assert(!"Pure virtual ObjectKey::operator< called\n");
87 ObjectKey::operator<=(ObjectKey &)
89 assert(!"Pure virtual ObjectKey::operator<= called\n");
94 ObjectKey::operator>(ObjectKey &)
96 assert(!"Pure virtual ObjectKey::operator> called\n");
101 ObjectKey::operator>=(ObjectKey &)
103 assert(!"Pure virtual ObjectKey::operator>= called\n");
108 ObjectKey::hashValue(void)
110 assert(!"Pure virtual ObjectKey::hashValue called\n");
113 #endif /* DEAD_WOOD */
116 ObjectKey::genericHashValue(void * buf, int len)
118 short * sbuf = (short *)buf;
122 // Sum the bytes, 2 at a time. We will deal with fractional
123 // stuff after we do the main buffer.
125 for (int cur = 0; cur < slen; cur++) {
129 // If the length is not even, then we need to add the last
130 // byte to the high order bits of the hash value.
133 hash ^= ((char *)buf)[len - 1] << 8;
136 if (hash < 0) hash = -hash;