diff options
Diffstat (limited to '')
| -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 | |||
