зеркало из https://github.com/mozilla/gecko-dev.git
148 строки
4.7 KiB
C++
148 строки
4.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsUnicharUtils_h__
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#define nsUnicharUtils_h__
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#include "nsStringGlue.h"
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/* (0x3131u <= (u) && (u) <= 0x318eu) => Hangul Compatibility Jamo */
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/* (0xac00u <= (u) && (u) <= 0xd7a3u) => Hangul Syllables */
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#define IS_CJ_CHAR(u) \
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((0x2e80u <= (u) && (u) <= 0x312fu) || \
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(0x3190u <= (u) && (u) <= 0xabffu) || \
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(0xf900u <= (u) && (u) <= 0xfaffu) || \
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(0xff00u <= (u) && (u) <= 0xffefu) )
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void ToLowerCase(nsAString&);
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void ToUpperCase(nsAString&);
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void ToLowerCase(const nsAString& aSource, nsAString& aDest);
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void ToUpperCase(const nsAString& aSource, nsAString& aDest);
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uint32_t ToLowerCase(uint32_t);
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uint32_t ToUpperCase(uint32_t);
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uint32_t ToTitleCase(uint32_t);
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void ToLowerCase(const char16_t*, char16_t*, uint32_t);
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void ToUpperCase(const char16_t*, char16_t*, uint32_t);
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inline bool IsUpperCase(uint32_t c) {
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return ToLowerCase(c) != c;
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}
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inline bool IsLowerCase(uint32_t c) {
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return ToUpperCase(c) != c;
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}
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#ifdef MOZILLA_INTERNAL_API
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class nsCaseInsensitiveStringComparator : public nsStringComparator
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{
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public:
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virtual int32_t operator() (const char16_t*,
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const char16_t*,
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uint32_t,
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uint32_t) const override;
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};
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class nsCaseInsensitiveUTF8StringComparator : public nsCStringComparator
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{
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public:
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virtual int32_t operator() (const char*,
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const char*,
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uint32_t,
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uint32_t) const override;
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};
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class nsCaseInsensitiveStringArrayComparator
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{
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public:
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template<class A, class B>
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bool Equals(const A& a, const B& b) const {
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return a.Equals(b, nsCaseInsensitiveStringComparator());
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}
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};
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class nsASCIICaseInsensitiveStringComparator : public nsStringComparator
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{
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public:
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nsASCIICaseInsensitiveStringComparator() {}
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virtual int operator() (const char16_t*,
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const char16_t*,
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uint32_t,
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uint32_t) const override;
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};
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inline bool
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CaseInsensitiveFindInReadable(const nsAString& aPattern,
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nsAString::const_iterator& aSearchStart,
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nsAString::const_iterator& aSearchEnd)
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{
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return FindInReadable(aPattern, aSearchStart, aSearchEnd,
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nsCaseInsensitiveStringComparator());
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}
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inline bool
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CaseInsensitiveFindInReadable(const nsAString& aPattern,
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const nsAString& aHay)
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{
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nsAString::const_iterator searchBegin, searchEnd;
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return FindInReadable(aPattern, aHay.BeginReading(searchBegin),
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aHay.EndReading(searchEnd),
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nsCaseInsensitiveStringComparator());
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}
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#endif // MOZILLA_INTERNAL_API
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int32_t
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CaseInsensitiveCompare(const char16_t *a, const char16_t *b, uint32_t len);
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int32_t
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CaseInsensitiveCompare(const char* aLeft, const char* aRight,
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uint32_t aLeftBytes, uint32_t aRightBytes);
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/**
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* This function determines whether the UTF-8 sequence pointed to by aLeft is
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* case-insensitively-equal to the UTF-8 sequence pointed to by aRight.
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*
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* aLeftEnd marks the first memory location past aLeft that is not part of
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* aLeft; aRightEnd similarly marks the end of aRight.
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*
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* The function assumes that aLeft < aLeftEnd and aRight < aRightEnd.
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*
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* The function stores the addresses of the next characters in the sequence
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* into aLeftNext and aRightNext. It's up to the caller to make sure that the
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* returned pointers are valid -- i.e. the function may return aLeftNext >=
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* aLeftEnd or aRightNext >= aRightEnd.
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*
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* If the function encounters invalid text, it sets aErr to true and returns
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* false, possibly leaving aLeftNext and aRightNext uninitialized. If the
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* function returns true, aErr is guaranteed to be false and both aLeftNext and
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* aRightNext are guaranteed to be initialized.
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*/
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bool
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CaseInsensitiveUTF8CharsEqual(const char* aLeft, const char* aRight,
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const char* aLeftEnd, const char* aRightEnd,
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const char** aLeftNext, const char** aRightNext,
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bool* aErr);
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namespace mozilla {
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/**
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* Hash a UTF8 string as though it were a UTF16 string.
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*
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* The value returned is the same as if we converted the string to UTF16 and
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* then ran HashString() on the result.
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*
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* The given |length| is in bytes.
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*/
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uint32_t
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HashUTF8AsUTF16(const char* aUTF8, uint32_t aLength, bool* aErr);
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} // namespace mozilla
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#endif /* nsUnicharUtils_h__ */
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