thunderbird-dev 1:38.6.0+build1-0ubuntu1 / usr / include / thunderbird / nsUnicharUtils.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef nsUnicharUtils_h__
#define nsUnicharUtils_h__

#include "nsStringGlue.h"

/* (0x3131u <= (u) && (u) <= 0x318eu) => Hangul Compatibility Jamo */
/* (0xac00u <= (u) && (u) <= 0xd7a3u) => Hangul Syllables          */
#define IS_CJ_CHAR(u) \
  ((0x2e80u <= (u) && (u) <= 0x312fu) || \
   (0x3190u <= (u) && (u) <= 0xabffu) || \
   (0xf900u <= (u) && (u) <= 0xfaffu) || \
   (0xff00u <= (u) && (u) <= 0xffefu) )

void ToLowerCase(nsAString&);
void ToUpperCase(nsAString&);

void ToLowerCase(const nsAString& aSource, nsAString& aDest);
void ToUpperCase(const nsAString& aSource, nsAString& aDest);

uint32_t ToLowerCase(uint32_t);
uint32_t ToUpperCase(uint32_t);
uint32_t ToTitleCase(uint32_t);

void ToLowerCase(const char16_t*, char16_t*, uint32_t);
void ToUpperCase(const char16_t*, char16_t*, uint32_t);

inline bool IsUpperCase(uint32_t c) {
  return ToLowerCase(c) != c;
}

inline bool IsLowerCase(uint32_t c) {
  return ToUpperCase(c) != c;
}

#ifdef MOZILLA_INTERNAL_API

class nsCaseInsensitiveStringComparator : public nsStringComparator
{
public:
  virtual int32_t operator() (const char16_t*,
                              const char16_t*,
                              uint32_t,
                              uint32_t) const override;
};

class nsCaseInsensitiveUTF8StringComparator : public nsCStringComparator
{
public:
  virtual int32_t operator() (const char*,
                              const char*,
                              uint32_t,
                              uint32_t) const override;
};

class nsCaseInsensitiveStringArrayComparator
{
public:
  template<class A, class B>
  bool Equals(const A& a, const B& b) const {
    return a.Equals(b, nsCaseInsensitiveStringComparator());
  }
};

class nsASCIICaseInsensitiveStringComparator : public nsStringComparator
{
public:
  nsASCIICaseInsensitiveStringComparator() {}
  virtual int operator() (const char16_t*,
                          const char16_t*,
                          uint32_t,
                          uint32_t) const override;
};

inline bool
CaseInsensitiveFindInReadable(const nsAString& aPattern,
                              nsAString::const_iterator& aSearchStart,
                              nsAString::const_iterator& aSearchEnd)
{
  return FindInReadable(aPattern, aSearchStart, aSearchEnd,
                        nsCaseInsensitiveStringComparator());
}

inline bool
CaseInsensitiveFindInReadable(const nsAString& aPattern,
                              const nsAString& aHay)
{
  nsAString::const_iterator searchBegin, searchEnd;
  return FindInReadable(aPattern, aHay.BeginReading(searchBegin),
                        aHay.EndReading(searchEnd),
                        nsCaseInsensitiveStringComparator());
}

#endif // MOZILLA_INTERNAL_API

int32_t
CaseInsensitiveCompare(const char16_t *a, const char16_t *b, uint32_t len);

int32_t
CaseInsensitiveCompare(const char* aLeft, const char* aRight,
                       uint32_t aLeftBytes, uint32_t aRightBytes);

/**
 * This function determines whether the UTF-8 sequence pointed to by aLeft is
 * case-insensitively-equal to the UTF-8 sequence pointed to by aRight.
 *
 * aLeftEnd marks the first memory location past aLeft that is not part of
 * aLeft; aRightEnd similarly marks the end of aRight.
 *
 * The function assumes that aLeft < aLeftEnd and aRight < aRightEnd.
 *
 * The function stores the addresses of the next characters in the sequence
 * into aLeftNext and aRightNext.  It's up to the caller to make sure that the
 * returned pointers are valid -- i.e. the function may return aLeftNext >=
 * aLeftEnd or aRightNext >= aRightEnd.
 *
 * If the function encounters invalid text, it sets aErr to true and returns
 * false, possibly leaving aLeftNext and aRightNext uninitialized.  If the
 * function returns true, aErr is guaranteed to be false and both aLeftNext and
 * aRightNext are guaranteed to be initialized.
 */
bool
CaseInsensitiveUTF8CharsEqual(const char* aLeft, const char* aRight,
                              const char* aLeftEnd, const char* aRightEnd,
                              const char** aLeftNext, const char** aRightNext,
                              bool* aErr);

namespace mozilla {

/**
 * Hash a UTF8 string as though it were a UTF16 string.
 *
 * The value returned is the same as if we converted the string to UTF16 and
 * then ran HashString() on the result.
 *
 * The given |length| is in bytes.
 */
uint32_t
HashUTF8AsUTF16(const char* aUTF8, uint32_t aLength, bool* aErr);

} // namespace mozilla

#endif  /* nsUnicharUtils_h__ */

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