ICU 74.1 74.1

normalizer2.h
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1 // © 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 *******************************************************************************
5 *
6 * Copyright (C) 2009-2013, International Business Machines
7 * Corporation and others. All Rights Reserved.
8 *
9 *******************************************************************************
10 * file name: normalizer2.h
11 * encoding: UTF-8
12 * tab size: 8 (not used)
13 * indentation:4
14 *
15 * created on: 2009nov22
16 * created by: Markus W. Scherer
17 */
18
19 #ifndef __NORMALIZER2_H__
20 #define __NORMALIZER2_H__
21
27 #include "unicode/utypes.h"
28
29 #if U_SHOW_CPLUSPLUS_API
30
31 #if !UCONFIG_NO_NORMALIZATION
32
33 #include "unicode/stringpiece.h"
34 #include "unicode/uniset.h"
35 #include "unicode/unistr.h"
36 #include "unicode/unorm2.h"
37
38 U_NAMESPACE_BEGIN
39
40 class ByteSink;
41
85 class U_COMMON_API Normalizer2 : public UObject {
86 public:
91 ~Normalizer2();
92
104 static const Normalizer2 *
105 getNFCInstance(UErrorCode &errorCode);
106
118 static const Normalizer2 *
119 getNFDInstance(UErrorCode &errorCode);
120
132 static const Normalizer2 *
133 getNFKCInstance(UErrorCode &errorCode);
134
146 static const Normalizer2 *
147 getNFKDInstance(UErrorCode &errorCode);
148
163 static const Normalizer2 *
164 getNFKCCasefoldInstance(UErrorCode &errorCode);
165
166 #ifndef U_HIDE_DRAFT_API
181 static const Normalizer2 *
182 getNFKCSimpleCasefoldInstance(UErrorCode &errorCode);
183 #endif // U_HIDE_DRAFT_API
184
206 static const Normalizer2 *
207 getInstance(const char *packageName,
208 const char *name,
209 UNormalization2Mode mode,
210 UErrorCode &errorCode);
211
222 UnicodeString
223 normalize(const UnicodeString &src, UErrorCode &errorCode) const {
224 UnicodeString result;
225 normalize(src, result, errorCode);
226 return result;
227 }
241 virtual UnicodeString &
242 normalize(const UnicodeString &src,
243 UnicodeString &dest,
244 UErrorCode &errorCode) const = 0;
245
268 virtual void
269 normalizeUTF8(uint32_t options, StringPiece src, ByteSink &sink,
270 Edits *edits, UErrorCode &errorCode) const;
271
286 virtual UnicodeString &
287 normalizeSecondAndAppend(UnicodeString &first,
288 const UnicodeString &second,
289 UErrorCode &errorCode) const = 0;
304 virtual UnicodeString &
305 append(UnicodeString &first,
306 const UnicodeString &second,
307 UErrorCode &errorCode) const = 0;
308
322 virtual UBool
323 getDecomposition(UChar32 c, UnicodeString &decomposition) const = 0;
324
349 virtual UBool
350 getRawDecomposition(UChar32 c, UnicodeString &decomposition) const;
351
367 virtual UChar32
368 composePair(UChar32 a, UChar32 b) const;
369
378 virtual uint8_t
379 getCombiningClass(UChar32 c) const;
380
395 virtual UBool
396 isNormalized(const UnicodeString &s, UErrorCode &errorCode) const = 0;
416 virtual UBool
417 isNormalizedUTF8(StringPiece s, UErrorCode &errorCode) const;
418
419
435 virtual UNormalizationCheckResult
436 quickCheck(const UnicodeString &s, UErrorCode &errorCode) const = 0;
437
460 virtual int32_t
461 spanQuickCheckYes(const UnicodeString &s, UErrorCode &errorCode) const = 0;
462
476 virtual UBool hasBoundaryBefore(UChar32 c) const = 0;
477
492 virtual UBool hasBoundaryAfter(UChar32 c) const = 0;
493
507 virtual UBool isInert(UChar32 c) const = 0;
508 };
509
521 class U_COMMON_API FilteredNormalizer2 : public Normalizer2 {
522 public:
533 FilteredNormalizer2(const Normalizer2 &n2, const UnicodeSet &filterSet) :
534 norm2(n2), set(filterSet) {}
535
540 ~FilteredNormalizer2();
541
555 virtual UnicodeString &
556 normalize(const UnicodeString &src,
557 UnicodeString &dest,
558 UErrorCode &errorCode) const override;
559
582 virtual void
583 normalizeUTF8(uint32_t options, StringPiece src, ByteSink &sink,
584 Edits *edits, UErrorCode &errorCode) const override;
585
600 virtual UnicodeString &
601 normalizeSecondAndAppend(UnicodeString &first,
602 const UnicodeString &second,
603 UErrorCode &errorCode) const override;
618 virtual UnicodeString &
619 append(UnicodeString &first,
620 const UnicodeString &second,
621 UErrorCode &errorCode) const override;
622
634 virtual UBool
635 getDecomposition(UChar32 c, UnicodeString &decomposition) const override;
636
648 virtual UBool
649 getRawDecomposition(UChar32 c, UnicodeString &decomposition) const override;
650
661 virtual UChar32
662 composePair(UChar32 a, UChar32 b) const override;
663
672 virtual uint8_t
673 getCombiningClass(UChar32 c) const override;
674
686 virtual UBool
687 isNormalized(const UnicodeString &s, UErrorCode &errorCode) const override;
707 virtual UBool
708 isNormalizedUTF8(StringPiece s, UErrorCode &errorCode) const override;
720 virtual UNormalizationCheckResult
721 quickCheck(const UnicodeString &s, UErrorCode &errorCode) const override;
733 virtual int32_t
734 spanQuickCheckYes(const UnicodeString &s, UErrorCode &errorCode) const override;
735
744 virtual UBool hasBoundaryBefore(UChar32 c) const override;
745
754 virtual UBool hasBoundaryAfter(UChar32 c) const override;
755
763 virtual UBool isInert(UChar32 c) const override;
764 private:
765 UnicodeString &
766 normalize(const UnicodeString &src,
767 UnicodeString &dest,
768 USetSpanCondition spanCondition,
769 UErrorCode &errorCode) const;
770
771 void
772 normalizeUTF8(uint32_t options, const char *src, int32_t length,
773 ByteSink &sink, Edits *edits,
774 USetSpanCondition spanCondition,
775 UErrorCode &errorCode) const;
776
777 UnicodeString &
778 normalizeSecondAndAppend(UnicodeString &first,
779 const UnicodeString &second,
780 UBool doNormalize,
781 UErrorCode &errorCode) const;
782
783 const Normalizer2 &norm2;
784 const UnicodeSet &set;
785 };
786
787 U_NAMESPACE_END
788
789 #endif // !UCONFIG_NO_NORMALIZATION
790
791 #endif /* U_SHOW_CPLUSPLUS_API */
792
793 #endif // __NORMALIZER2_H__
icu::ByteSink
A ByteSink can be filled with bytes.
Definition: bytestream.h:53
icu::Edits
Records lengths of string edits but not replacement text.
Definition: edits.h:80
icu::FilteredNormalizer2
Normalization filtered by a UnicodeSet.
Definition: normalizer2.h:521
icu::FilteredNormalizer2::normalize
virtual UnicodeString & normalize(const UnicodeString &src, UnicodeString &dest, UErrorCode &errorCode) const override
Writes the normalized form of the source string to the destination string (replacing its contents) an...
icu::FilteredNormalizer2::isNormalizedUTF8
virtual UBool isNormalizedUTF8(StringPiece s, UErrorCode &errorCode) const override
Tests if the UTF-8 string is normalized.
icu::FilteredNormalizer2::~FilteredNormalizer2
~FilteredNormalizer2()
Destructor.
icu::FilteredNormalizer2::normalizeSecondAndAppend
virtual UnicodeString & normalizeSecondAndAppend(UnicodeString &first, const UnicodeString &second, UErrorCode &errorCode) const override
Appends the normalized form of the second string to the first string (merging them at the boundary) a...
icu::FilteredNormalizer2::quickCheck
virtual UNormalizationCheckResult quickCheck(const UnicodeString &s, UErrorCode &errorCode) const override
Tests if the string is normalized.
icu::FilteredNormalizer2::isInert
virtual UBool isInert(UChar32 c) const override
Tests if the character is normalization-inert.
icu::FilteredNormalizer2::composePair
virtual UChar32 composePair(UChar32 a, UChar32 b) const override
Performs pairwise composition of a & b and returns the composite if there is one.
icu::FilteredNormalizer2::getDecomposition
virtual UBool getDecomposition(UChar32 c, UnicodeString &decomposition) const override
Gets the decomposition mapping of c.
icu::FilteredNormalizer2::isNormalized
virtual UBool isNormalized(const UnicodeString &s, UErrorCode &errorCode) const override
Tests if the string is normalized.
icu::FilteredNormalizer2::getRawDecomposition
virtual UBool getRawDecomposition(UChar32 c, UnicodeString &decomposition) const override
Gets the raw decomposition mapping of c.
icu::FilteredNormalizer2::getCombiningClass
virtual uint8_t getCombiningClass(UChar32 c) const override
Gets the combining class of c.
icu::FilteredNormalizer2::normalizeUTF8
virtual void normalizeUTF8(uint32_t options, StringPiece src, ByteSink &sink, Edits *edits, UErrorCode &errorCode) const override
Normalizes a UTF-8 string and optionally records how source substrings relate to changed and unchange...
icu::FilteredNormalizer2::hasBoundaryBefore
virtual UBool hasBoundaryBefore(UChar32 c) const override
Tests if the character always has a normalization boundary before it, regardless of context.
icu::FilteredNormalizer2::append
virtual UnicodeString & append(UnicodeString &first, const UnicodeString &second, UErrorCode &errorCode) const override
Appends the second string to the first string (merging them at the boundary) and returns the first st...
icu::FilteredNormalizer2::FilteredNormalizer2
FilteredNormalizer2(const Normalizer2 &n2, const UnicodeSet &filterSet)
Constructs a filtered normalizer wrapping any Normalizer2 instance and a filter set.
Definition: normalizer2.h:533
icu::FilteredNormalizer2::hasBoundaryAfter
virtual UBool hasBoundaryAfter(UChar32 c) const override
Tests if the character always has a normalization boundary after it, regardless of context.
icu::FilteredNormalizer2::spanQuickCheckYes
virtual int32_t spanQuickCheckYes(const UnicodeString &s, UErrorCode &errorCode) const override
Returns the end of the normalized substring of the input string.
icu::Normalizer2
Unicode normalization functionality for standard Unicode normalization or for using custom mapping ta...
Definition: normalizer2.h:85
icu::Normalizer2::getDecomposition
virtual UBool getDecomposition(UChar32 c, UnicodeString &decomposition) const =0
Gets the decomposition mapping of c.
icu::Normalizer2::spanQuickCheckYes
virtual int32_t spanQuickCheckYes(const UnicodeString &s, UErrorCode &errorCode) const =0
Returns the end of the normalized substring of the input string.
icu::Normalizer2::isNormalized
virtual UBool isNormalized(const UnicodeString &s, UErrorCode &errorCode) const =0
Tests if the string is normalized.
icu::Normalizer2::hasBoundaryBefore
virtual UBool hasBoundaryBefore(UChar32 c) const =0
Tests if the character always has a normalization boundary before it, regardless of context.
icu::Normalizer2::getNFKCInstance
static const Normalizer2 * getNFKCInstance(UErrorCode &errorCode)
Returns a Normalizer2 instance for Unicode NFKC normalization.
icu::Normalizer2::~Normalizer2
~Normalizer2()
Destructor.
icu::Normalizer2::composePair
virtual UChar32 composePair(UChar32 a, UChar32 b) const
Performs pairwise composition of a & b and returns the composite if there is one.
icu::Normalizer2::getNFCInstance
static const Normalizer2 * getNFCInstance(UErrorCode &errorCode)
Returns a Normalizer2 instance for Unicode NFC normalization.
icu::Normalizer2::normalize
virtual UnicodeString & normalize(const UnicodeString &src, UnicodeString &dest, UErrorCode &errorCode) const =0
Writes the normalized form of the source string to the destination string (replacing its contents) an...
icu::Normalizer2::getInstance
static const Normalizer2 * getInstance(const char *packageName, const char *name, UNormalization2Mode mode, UErrorCode &errorCode)
Returns a Normalizer2 instance which uses the specified data file (packageName/name similar to ucnv_o...
icu::Normalizer2::append
virtual UnicodeString & append(UnicodeString &first, const UnicodeString &second, UErrorCode &errorCode) const =0
Appends the second string to the first string (merging them at the boundary) and returns the first st...
icu::Normalizer2::normalizeSecondAndAppend
virtual UnicodeString & normalizeSecondAndAppend(UnicodeString &first, const UnicodeString &second, UErrorCode &errorCode) const =0
Appends the normalized form of the second string to the first string (merging them at the boundary) a...
icu::Normalizer2::normalize
UnicodeString normalize(const UnicodeString &src, UErrorCode &errorCode) const
Returns the normalized form of the source string.
Definition: normalizer2.h:223
icu::Normalizer2::quickCheck
virtual UNormalizationCheckResult quickCheck(const UnicodeString &s, UErrorCode &errorCode) const =0
Tests if the string is normalized.
icu::Normalizer2::hasBoundaryAfter
virtual UBool hasBoundaryAfter(UChar32 c) const =0
Tests if the character always has a normalization boundary after it, regardless of context.
icu::Normalizer2::getCombiningClass
virtual uint8_t getCombiningClass(UChar32 c) const
Gets the combining class of c.
icu::Normalizer2::getNFKCSimpleCasefoldInstance
static const Normalizer2 * getNFKCSimpleCasefoldInstance(UErrorCode &errorCode)
Returns a Normalizer2 instance for a variant of Unicode toNFKC_Casefold() normalization which is equi...
icu::Normalizer2::isInert
virtual UBool isInert(UChar32 c) const =0
Tests if the character is normalization-inert.
icu::Normalizer2::getNFKCCasefoldInstance
static const Normalizer2 * getNFKCCasefoldInstance(UErrorCode &errorCode)
Returns a Normalizer2 instance for Unicode toNFKC_Casefold() normalization which is equivalent to app...
icu::Normalizer2::normalizeUTF8
virtual void normalizeUTF8(uint32_t options, StringPiece src, ByteSink &sink, Edits *edits, UErrorCode &errorCode) const
Normalizes a UTF-8 string and optionally records how source substrings relate to changed and unchange...
icu::Normalizer2::isNormalizedUTF8
virtual UBool isNormalizedUTF8(StringPiece s, UErrorCode &errorCode) const
Tests if the UTF-8 string is normalized.
icu::Normalizer2::getRawDecomposition
virtual UBool getRawDecomposition(UChar32 c, UnicodeString &decomposition) const
Gets the raw decomposition mapping of c.
icu::Normalizer2::getNFDInstance
static const Normalizer2 * getNFDInstance(UErrorCode &errorCode)
Returns a Normalizer2 instance for Unicode NFD normalization.
icu::Normalizer2::getNFKDInstance
static const Normalizer2 * getNFKDInstance(UErrorCode &errorCode)
Returns a Normalizer2 instance for Unicode NFKD normalization.
icu::StringPiece
A string-like object that points to a sized piece of memory.
Definition: stringpiece.h:60
icu::UObject
UObject is the common ICU "boilerplate" class.
Definition: uobject.h:223
icu::UnicodeSet
A mutable set of Unicode characters and multicharacter strings.
Definition: uniset.h:285
icu::UnicodeString
UnicodeString is a string class that stores Unicode characters directly and provides similar function...
Definition: unistr.h:296
stringpiece.h
C++ API: StringPiece: Read-only byte string wrapper class.
UChar32
int32_t UChar32
Define UChar32 as a type for single Unicode code points.
Definition: umachine.h:435
UBool
int8_t UBool
The ICU boolean type, a signed-byte integer.
Definition: umachine.h:247
uniset.h
C++ API: Unicode Set.
unistr.h
C++ API: Unicode String.
unorm2.h
C API: New API for Unicode Normalization.
UNormalizationCheckResult
UNormalizationCheckResult
Result values for normalization quick check functions.
Definition: unorm2.h:97
UNormalization2Mode
UNormalization2Mode
Constants for normalization modes.
Definition: unorm2.h:48
USetSpanCondition
USetSpanCondition
Argument values for whether span() and similar functions continue while the current character is cont...
Definition: uset.h:184
utypes.h
Basic definitions for ICU, for both C and C++ APIs.
UErrorCode
UErrorCode
Standard ICU4C error code type, a substitute for exceptions.
Definition: utypes.h:415
U_COMMON_API
#define U_COMMON_API
Set to export library symbols from inside the common library, and to import them from outside.
Definition: utypes.h:300