OpenNI 1.5.4
XnStringsHash.h
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22#ifndef _XN_STRINGS_HASH_H
23#define _XN_STRINGS_HASH_H
24
25//---------------------------------------------------------------------------
26// Includes
27//---------------------------------------------------------------------------
28#include "XnHash.h"
29#include <XnOS.h>
30
31//---------------------------------------------------------------------------
32// Types
33//---------------------------------------------------------------------------
35{
36public:
37 static XnHashValue Hash(const XnChar* const& key)
38 {
39 XnUInt32 nCRC = 0;
40 xnOSStrCRC32(key, &nCRC);
41
42 // convert from UINT32 to XnHashValue
43 return nCRC % (1 << (sizeof(XnHashValue)*8));
44 }
45
46 static XnInt32 Compare(const XnChar* const& key1, const XnChar* const& key2)
47 {
48 return strcmp(key1, key2);
49 }
50};
51
53{
54public:
55 static XnValue CreateValueCopy(const XnChar* const& orig)
56 {
57 // we should copy string, so we can keep the key
58 XnUInt32 nLen = xnOSStrLen(orig) + 1; // with null termination
59 XnChar* pcKey = (XnChar*)xnOSMalloc(nLen);
60 xnOSStrCopy(pcKey, orig, nLen);
61 return (pcKey);
62 }
63
64 static void FreeValue(XnValue& Value)
65 {
66 XnChar* pcKey = (XnChar*)Value;
67 xnOSFree(pcKey);
68 }
69
70 static XnValue GetAsValue(const XnChar* const& orig)
71 {
72 return (XnValue)orig;
73 }
74
75 static const XnChar* const& GetFromValue(const XnValue& Value)
76 {
77 return (const XnChar* const&)Value;
78 }
79
80 static const XnChar*& GetFromValue(XnValue& Value)
81 {
82 return (const XnChar*&)Value;
83 }
84};
85
90#define XN_DECLARE_STRINGS_HASH_WITH_TRANSLATOR_DECL(decl, ValueType, ClassName, ValueTranslator) \
91 XN_DECLARE_HASH_DECL(decl, const XnChar*, ValueType, ClassName, XnStringsKeyTranslator, ValueTranslator, XnStringsKeyManager) \
92
97#define XN_DECLARE_STRINGS_HASH_WITH_TRANSLATOR(ValueType, ClassName, ValueTranslator) \
98 XN_DECLARE_STRINGS_HASH_WITH_TRANSLATOR_DECL(, ValueType, ClassName, ValueTranslator)
99
104#define XN_DECLARE_STRINGS_HASH_DECL(decl, ValueType, ClassName) \
105 XN_DECLARE_DEFAULT_VALUE_TRANSLATOR_DECL(decl, ValueType, XN_DEFAULT_TRANSLATOR_NAME(ClassName)) \
106 XN_DECLARE_STRINGS_HASH_WITH_TRANSLATOR_DECL(decl, ValueType, ClassName, XN_DEFAULT_TRANSLATOR_NAME(ClassName)) \
107
112#define XN_DECLARE_STRINGS_HASH(ValueType, ClassName) \
113 XN_DECLARE_STRINGS_HASH_DECL(, ValueType, ClassName)
114
115XN_DECLARE_STRINGS_HASH(XnValue, XnStringsHash)
116
117
118#endif //_XN_STRINGS_HASH_H
void * XnValue
Definition: XnDataTypes.h:36
XnUInt8 XnHashValue
Definition: XnHash.h:46
XN_C_API void *XN_C_DECL xnOSMalloc(const XnSizeT nAllocSize)
XN_C_API void XN_C_DECL xnOSFree(const void *pMemBlock)
XN_C_API XnStatus XN_C_DECL xnOSStrCopy(XnChar *cpDestString, const XnChar *cpSrcString, const XnUInt32 nDestLength)
XN_C_API XnUInt32 XN_C_DECL xnOSStrLen(const XnChar *cpStr)
XN_C_API XnStatus XN_C_DECL xnOSStrCRC32(const XnChar *cpString, XnUInt32 *nCRC32)
#define XN_DECLARE_STRINGS_HASH(ValueType, ClassName)
Definition: XnStringsHash.h:112
Definition: XnStringsHash.h:35
static XnInt32 Compare(const XnChar *const &key1, const XnChar *const &key2)
Definition: XnStringsHash.h:46
static XnHashValue Hash(const XnChar *const &key)
Definition: XnStringsHash.h:37
Definition: XnStringsHash.h:53
static XnValue CreateValueCopy(const XnChar *const &orig)
Definition: XnStringsHash.h:55
static const XnChar *& GetFromValue(XnValue &Value)
Definition: XnStringsHash.h:80
static XnValue GetAsValue(const XnChar *const &orig)
Definition: XnStringsHash.h:70
static const XnChar *const & GetFromValue(const XnValue &Value)
Definition: XnStringsHash.h:75
static void FreeValue(XnValue &Value)
Definition: XnStringsHash.h:64