1 files changed, 101 insertions, 0 deletions

diff --git a/src/hash.cpp b/src/hash.cpp
new file mode 100644
index 0000000..a207c29
--- /dev/null
+++ b/src/hash.cpp
@@ -0,0 +1,101 @@
+#include "hash.h"
+
+namespace Bu { subExceptionDef( HashException ) }
+
+template<> uint32_t Bu::__calcHashCode<int>( const int &k )
+{
+        return k;
+}
+
+template<> bool Bu::__cmpHashKeys<int>( const int &a, const int &b )
+{
+        return a == b;
+}
+
+template<> uint32_t Bu::__calcHashCode<unsigned int>( const unsigned int &k )
+{
+        return k;
+}
+
+template<> bool Bu::__cmpHashKeys<unsigned int>( const unsigned int &a, const unsigned int &b )
+{
+        return a == b;
+}
+
+template<>
+uint32_t Bu::__calcHashCode<const char *>( const char * const &k )
+{
+        if (k == NULL)
+        {
+                return 0;
+        }
+        
+        unsigned long int nPos = 0;
+        for( const char *s = k; *s; s++ )
+        {
+                nPos = *s + (nPos << 6) + (nPos << 16) - nPos;
+        }
+
+        return nPos;
+}
+
+template<> bool Bu::__cmpHashKeys<const char *>( const char * const &a, const char * const &b )
+{
+        if( a == b )
+                return true;
+
+        for(int j=0; a[j] == b[j]; j++ )
+                if( a[j] == '\0' )
+                        return true;
+
+        return false;
+}
+
+template<>
+uint32_t Bu::__calcHashCode<char *>( char * const &k )
+{
+        if (k == NULL)
+        {
+                return 0;
+        }
+        
+        unsigned long int nPos = 0;
+        for( const char *s = k; *s; s++ )
+        {
+                nPos = *s + (nPos << 6) + (nPos << 16) - nPos;
+        }
+
+        return nPos;
+}
+
+template<> bool Bu::__cmpHashKeys<char *>( char * const &a, char * const &b )
+{
+        if( a == b )
+                return true;
+
+        for(int j=0; a[j] == b[j]; j++ )
+                if( a[j] == '\0' )
+                        return true;
+
+        return false;
+}
+
+template<> uint32_t Bu::__calcHashCode<std::string>( const std::string &k )
+{
+        std::string::size_type j, sz = k.size();
+        const char *s = k.c_str();
+
+        unsigned long int nPos = 0;
+        for( j = 0; j < sz; j++, s++ )
+        {
+                nPos = *s + (nPos << 6) + (nPos << 16) - nPos;
+        }
+
+        return nPos;
+}
+
+template<> bool Bu::__cmpHashKeys<std::string>( const std::string &a, const std::string &b )
+{
+        return a == b;
+}
+