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1 /************************************************************************************
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2
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3 PublicHeader: None
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4 Filename : OVR_StringHash.h
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5 Content : String hash table used when optional case-insensitive
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6 lookup is required.
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7 Created : September 19, 2012
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8 Notes :
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9
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10 Copyright : Copyright 2012 Oculus VR, Inc. All Rights reserved.
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11
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12 Use of this software is subject to the terms of the Oculus license
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13 agreement provided at the time of installation or download, or which
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14 otherwise accompanies this software in either electronic or hard copy form.
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15
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16 ************************************************************************************/
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17
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18 #ifndef OVR_StringHash_h
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19 #define OVR_StringHash_h
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20
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21 #include "OVR_String.h"
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22 #include "OVR_Hash.h"
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23
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24 namespace OVR {
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25
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26 //-----------------------------------------------------------------------------------
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27 // *** StringHash
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28
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29 // This is a custom string hash table that supports case-insensitive
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30 // searches through special functions such as GetCaseInsensitive, etc.
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31 // This class is used for Flash labels, exports and other case-insensitive tables.
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32
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33 template<class U, class Allocator = ContainerAllocator<U> >
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34 class StringHash : public Hash<String, U, String::NoCaseHashFunctor, Allocator>
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35 {
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36 public:
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37 typedef U ValueType;
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38 typedef StringHash<U, Allocator> SelfType;
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39 typedef Hash<String, U, String::NoCaseHashFunctor, Allocator> BaseType;
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40
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41 public:
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42
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43 void operator = (const SelfType& src) { BaseType::operator = (src); }
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44
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45 bool GetCaseInsensitive(const String& key, U* pvalue) const
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46 {
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47 String::NoCaseKey ikey(key);
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48 return BaseType::GetAlt(ikey, pvalue);
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49 }
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50 // Pointer-returning get variety.
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51 const U* GetCaseInsensitive(const String& key) const
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52 {
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53 String::NoCaseKey ikey(key);
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54 return BaseType::GetAlt(ikey);
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55 }
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56 U* GetCaseInsensitive(const String& key)
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57 {
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58 String::NoCaseKey ikey(key);
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59 return BaseType::GetAlt(ikey);
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60 }
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61
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62
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63 typedef typename BaseType::Iterator base_iterator;
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64
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65 base_iterator FindCaseInsensitive(const String& key)
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66 {
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67 String::NoCaseKey ikey(key);
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68 return BaseType::FindAlt(ikey);
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69 }
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70
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71 // Set just uses a find and assigns value if found. The key is not modified;
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72 // this behavior is identical to Flash string variable assignment.
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73 void SetCaseInsensitive(const String& key, const U& value)
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74 {
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75 base_iterator it = FindCaseInsensitive(key);
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76 if (it != BaseType::End())
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77 {
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78 it->Second = value;
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79 }
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80 else
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81 {
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82 BaseType::Add(key, value);
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83 }
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84 }
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85 };
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86
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87 } // OVR
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88
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89 #endif
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