1 /*
2 **********************************************************************
3 *   Copyright (C) 2013, International Business Machines
4 *   Corporation and others.  All Rights Reserved.
5 **********************************************************************
6 *
7 * scriptset.h
8 *
9 * created on: 2013 Jan 7
10 * created by: Andy Heninger
11 */
12 
13 #ifndef __SCRIPTSET_H__
14 #define __SCRIPTSET_H__
15 
16 #include "unicode/utypes.h"
17 #include "unicode/uobject.h"
18 #include "unicode/uscript.h"
19 
20 #include "uelement.h"
21 
22 U_NAMESPACE_BEGIN
23 
24 //-------------------------------------------------------------------------------
25 //
26 //  ScriptSet - A bit set representing a set of scripts.
27 //
28 //              This class was originally used exclusively with script sets appearing
29 //              as part of the spoof check whole script confusable binary data. Its
30 //              use has since become more general, but the continued use to wrap
31 //              prebuilt binary data does constrain the design.
32 //
33 //-------------------------------------------------------------------------------
34 class U_I18N_API ScriptSet: public UMemory {
35   public:
36     ScriptSet();
37     ScriptSet(const ScriptSet &other);
38     ~ScriptSet();
39 
40     UBool operator == (const ScriptSet &other) const;
41     ScriptSet & operator = (const ScriptSet &other);
42 
43     UBool      test(UScriptCode script, UErrorCode &status) const;
44     ScriptSet &Union(const ScriptSet &other);
45     ScriptSet &set(UScriptCode script, UErrorCode &status);
46     ScriptSet &reset(UScriptCode script, UErrorCode &status);
47     ScriptSet &intersect(const ScriptSet &other);
48     ScriptSet &intersect(UScriptCode script, UErrorCode &status);
49     UBool      intersects(const ScriptSet &other) const;  // Sets contain at least one script in commmon.
50     UBool      contains(const ScriptSet &other) const;    // All set bits in other are also set in this.
51 
52     ScriptSet &setAll();
53     ScriptSet &resetAll();
54     int32_t countMembers() const;
55     int32_t hashCode() const;
56     int32_t nextSetBit(int32_t script) const;
57 
58     UnicodeString &displayScripts(UnicodeString &dest) const; // append script names to dest string.
59     ScriptSet & parseScripts(const UnicodeString &scriptsString, UErrorCode &status);  // Replaces ScriptSet contents.
60 
61   private:
62     uint32_t  bits[6];
63 };
64 
65 U_NAMESPACE_END
66 
67 U_CAPI UBool U_EXPORT2
68 uhash_compareScriptSet(const UElement key1, const UElement key2);
69 
70 U_CAPI int32_t U_EXPORT2
71 uhash_hashScriptSet(const UElement key);
72 
73 U_CAPI void U_EXPORT2
74 uhash_deleteScriptSet(void *obj);
75 
76 #endif // __SCRIPTSET_H__
77