diff options
Diffstat (limited to 'src/hash.cpp')
-rw-r--r-- | src/hash.cpp | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/hash.cpp b/src/hash.cpp index b4aac77..14be208 100644 --- a/src/hash.cpp +++ b/src/hash.cpp | |||
@@ -1 +1,81 @@ | |||
1 | #include "hash.h" | 1 | #include "hash.h" |
2 | |||
3 | template<> | ||
4 | uint32_t __calcHashCode<const char *>( const char * k ) | ||
5 | { | ||
6 | if (k == NULL) | ||
7 | { | ||
8 | return 0; | ||
9 | } | ||
10 | |||
11 | unsigned long int nPos = 0; | ||
12 | for( const char *s = k; *s; s++ ) | ||
13 | { | ||
14 | nPos = *s + (nPos << 6) + (nPos << 16) - nPos; | ||
15 | } | ||
16 | |||
17 | return nPos; | ||
18 | } | ||
19 | |||
20 | template<> bool __cmpHashKeys<const char *>( const char *a, const char *b ) | ||
21 | { | ||
22 | if( a == b ) | ||
23 | return true; | ||
24 | |||
25 | for(; *a != *b; a++, b++ ) | ||
26 | if( *a == '\0' && *b == '\0' ) | ||
27 | return true; | ||
28 | |||
29 | return false; | ||
30 | } | ||
31 | |||
32 | template<> | ||
33 | uint32_t __calcHashCode<char *>( char *k ) | ||
34 | { | ||
35 | return __calcHashCode<const char *>((const char *)k ); | ||
36 | } | ||
37 | |||
38 | template<> bool __cmpHashKeys<char *>( char *a, char *b ) | ||
39 | { | ||
40 | return __cmpHashKeys<const char *>((const char *)a, (const char *)b ); | ||
41 | } | ||
42 | |||
43 | template<> uint32_t __calcHashCode<const std::string>( const std::string k ) | ||
44 | { | ||
45 | std::string::size_type j, sz = k.size(); | ||
46 | const char *s = k.c_str(); | ||
47 | |||
48 | unsigned long int nPos = 0; | ||
49 | for( j = 0; j < sz; j++, s++ ) | ||
50 | { | ||
51 | nPos = *s + (nPos << 6) + (nPos << 16) - nPos; | ||
52 | } | ||
53 | |||
54 | return nPos; | ||
55 | } | ||
56 | |||
57 | template<> bool __cmpHashKeys<const std::string>( const std::string a, const std::string b ) | ||
58 | { | ||
59 | return a == b; | ||
60 | } | ||
61 | |||
62 | template<> uint32_t __calcHashCode<std::string>( std::string k ) | ||
63 | { | ||
64 | return __calcHashCode<const std::string>( k ); | ||
65 | } | ||
66 | |||
67 | template<> bool __cmpHashKeys<std::string>( std::string a, std::string b ) | ||
68 | { | ||
69 | return __cmpHashKeys<const std::string>( a, b ); | ||
70 | } | ||
71 | |||
72 | template<> uint32_t __calcHashCode<Hashable &>( Hashable &k ) | ||
73 | { | ||
74 | return k.getHashCode(); | ||
75 | } | ||
76 | |||
77 | template<> bool __cmpHashKeys<Hashable &>( Hashable &a, Hashable &b ) | ||
78 | { | ||
79 | return a.compareForHash( b ); | ||
80 | } | ||
81 | |||