blob: 38994b88b429912bce8c03c97301a84fe90b3111 [file] [log] [blame]
/*
* (C) 1999 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef WTFString_h
#define WTFString_h
// This file would be called String.h, but that conflicts with <string.h>
// on systems without case-sensitive file systems.
#include <wtf/text/ASCIIFastPath.h>
#include <wtf/text/StringImpl.h>
#ifdef __OBJC__
#include <objc/objc.h>
#endif
#if PLATFORM(QT)
QT_BEGIN_NAMESPACE
class QString;
QT_END_NAMESPACE
#endif
#if PLATFORM(WX)
class wxString;
#endif
#if PLATFORM(BLACKBERRY)
namespace BlackBerry {
namespace Platform {
class String;
}
}
#endif
namespace WTF {
class CString;
class MemoryObjectInfo;
struct StringHash;
// Declarations of string operations
WTF_EXPORT_STRING_API int charactersToIntStrict(const LChar*, size_t, bool* ok = 0, int base = 10);
WTF_EXPORT_STRING_API int charactersToIntStrict(const UChar*, size_t, bool* ok = 0, int base = 10);
WTF_EXPORT_STRING_API unsigned charactersToUIntStrict(const LChar*, size_t, bool* ok = 0, int base = 10);
WTF_EXPORT_STRING_API unsigned charactersToUIntStrict(const UChar*, size_t, bool* ok = 0, int base = 10);
int64_t charactersToInt64Strict(const LChar*, size_t, bool* ok = 0, int base = 10);
int64_t charactersToInt64Strict(const UChar*, size_t, bool* ok = 0, int base = 10);
uint64_t charactersToUInt64Strict(const LChar*, size_t, bool* ok = 0, int base = 10);
uint64_t charactersToUInt64Strict(const UChar*, size_t, bool* ok = 0, int base = 10);
intptr_t charactersToIntPtrStrict(const LChar*, size_t, bool* ok = 0, int base = 10);
intptr_t charactersToIntPtrStrict(const UChar*, size_t, bool* ok = 0, int base = 10);
int charactersToInt(const LChar*, size_t, bool* ok = 0); // ignores trailing garbage
WTF_EXPORT_STRING_API int charactersToInt(const UChar*, size_t, bool* ok = 0); // ignores trailing garbage
unsigned charactersToUInt(const LChar*, size_t, bool* ok = 0); // ignores trailing garbage
unsigned charactersToUInt(const UChar*, size_t, bool* ok = 0); // ignores trailing garbage
int64_t charactersToInt64(const LChar*, size_t, bool* ok = 0); // ignores trailing garbage
int64_t charactersToInt64(const UChar*, size_t, bool* ok = 0); // ignores trailing garbage
uint64_t charactersToUInt64(const LChar*, size_t, bool* ok = 0); // ignores trailing garbage
uint64_t charactersToUInt64(const UChar*, size_t, bool* ok = 0); // ignores trailing garbage
intptr_t charactersToIntPtr(const LChar*, size_t, bool* ok = 0); // ignores trailing garbage
intptr_t charactersToIntPtr(const UChar*, size_t, bool* ok = 0); // ignores trailing garbage
// FIXME: Like the strict functions above, these give false for "ok" when there is trailing garbage.
// Like the non-strict functions above, these return the value when there is trailing garbage.
// It would be better if these were more consistent with the above functions instead.
WTF_EXPORT_STRING_API double charactersToDouble(const LChar*, size_t, bool* ok = 0);
WTF_EXPORT_STRING_API double charactersToDouble(const UChar*, size_t, bool* ok = 0);
float charactersToFloat(const LChar*, size_t, bool* ok = 0);
WTF_EXPORT_STRING_API float charactersToFloat(const UChar*, size_t, bool* ok = 0);
WTF_EXPORT_STRING_API float charactersToFloat(const LChar*, size_t, size_t& parsedLength);
WTF_EXPORT_STRING_API float charactersToFloat(const UChar*, size_t, size_t& parsedLength);
class ASCIILiteral;
enum TrailingZerosTruncatingPolicy {
KeepTrailingZeros,
TruncateTrailingZeros
};
template<bool isSpecialCharacter(UChar), typename CharacterType>
bool isAllSpecialCharacters(const CharacterType*, size_t);
class String {
public:
// Construct a null string, distinguishable from an empty string.
String() { }
// Construct a string with UTF-16 data.
WTF_EXPORT_STRING_API String(const UChar* characters, unsigned length);
// Construct a string by copying the contents of a vector. To avoid
// copying, consider using String::adopt instead.
template<size_t inlineCapacity>
explicit String(const Vector<UChar, inlineCapacity>&);
// Construct a string with UTF-16 data, from a null-terminated source.
WTF_EXPORT_STRING_API String(const UChar*);
// Construct a string with latin1 data.
WTF_EXPORT_STRING_API String(const LChar* characters, unsigned length);
WTF_EXPORT_STRING_API String(const char* characters, unsigned length);
// Construct a string with latin1 data, from a null-terminated source.
WTF_EXPORT_STRING_API String(const LChar* characters);
WTF_EXPORT_STRING_API String(const char* characters);
// Construct a string referencing an existing StringImpl.
String(StringImpl* impl) : m_impl(impl) { }
String(PassRefPtr<StringImpl> impl) : m_impl(impl) { }
String(RefPtr<StringImpl> impl) : m_impl(impl) { }
// Construct a string from a constant string literal.
WTF_EXPORT_STRING_API String(ASCIILiteral characters);
// Construct a string from a constant string literal.
// This constructor is the "big" version, as it put the length in the function call and generate bigger code.
enum ConstructFromLiteralTag { ConstructFromLiteral };
template<unsigned charactersCount>
String(const char (&characters)[charactersCount], ConstructFromLiteralTag) : m_impl(StringImpl::createFromLiteral<charactersCount>(characters)) { }
#if COMPILER_SUPPORTS(CXX_RVALUE_REFERENCES)
// We have to declare the copy constructor and copy assignment operator as well, otherwise
// they'll be implicitly deleted by adding the move constructor and move assignment operator.
String(const String& other) : m_impl(other.m_impl) { }
String(String&& other) : m_impl(other.m_impl.release()) { }
String& operator=(const String& other) { m_impl = other.m_impl; return *this; }
String& operator=(String&& other) { m_impl = other.m_impl.release(); return *this; }
#endif
// Inline the destructor.
ALWAYS_INLINE ~String() { }
void swap(String& o) { m_impl.swap(o.m_impl); }
static String adopt(StringBuffer<LChar>& buffer) { return StringImpl::adopt(buffer); }
static String adopt(StringBuffer<UChar>& buffer) { return StringImpl::adopt(buffer); }
template<typename CharacterType, size_t inlineCapacity>
static String adopt(Vector<CharacterType, inlineCapacity>& vector) { return StringImpl::adopt(vector); }
bool isNull() const { return !m_impl; }
bool isEmpty() const { return !m_impl || !m_impl->length(); }
StringImpl* impl() const { return m_impl.get(); }
unsigned length() const
{
if (!m_impl)
return 0;
return m_impl->length();
}
const UChar* characters() const
{
if (!m_impl)
return 0;
return m_impl->characters();
}
const LChar* characters8() const
{
if (!m_impl)
return 0;
ASSERT(m_impl->is8Bit());
return m_impl->characters8();
}
const UChar* characters16() const
{
if (!m_impl)
return 0;
ASSERT(!m_impl->is8Bit());
return m_impl->characters16();
}
// Return characters8() or characters16() depending on CharacterType.
template <typename CharacterType>
inline const CharacterType* getCharacters() const;
// Like getCharacters() and upconvert if CharacterType is UChar on a 8bit string.
template <typename CharacterType>
inline const CharacterType* getCharactersWithUpconvert() const;
bool is8Bit() const { return m_impl->is8Bit(); }
unsigned sizeInBytes() const
{
if (!m_impl)
return 0;
return m_impl->length() * (is8Bit() ? sizeof(LChar) : sizeof(UChar));
}
WTF_EXPORT_STRING_API CString ascii() const;
WTF_EXPORT_STRING_API CString latin1() const;
typedef enum {
LenientConversion,
StrictConversion,
StrictConversionReplacingUnpairedSurrogatesWithFFFD,
} ConversionMode;
WTF_EXPORT_STRING_API CString utf8(ConversionMode = LenientConversion) const;
UChar operator[](unsigned index) const
{
if (!m_impl || index >= m_impl->length())
return 0;
return (*m_impl)[index];
}
WTF_EXPORT_STRING_API static String number(int);
WTF_EXPORT_STRING_API static String number(unsigned int);
WTF_EXPORT_STRING_API static String number(long);
WTF_EXPORT_STRING_API static String number(unsigned long);
WTF_EXPORT_STRING_API static String number(long long);
WTF_EXPORT_STRING_API static String number(unsigned long long);
WTF_EXPORT_STRING_API static String number(double, unsigned precision = 6, TrailingZerosTruncatingPolicy = TruncateTrailingZeros);
// Number to String conversion following the ECMAScript definition.
WTF_EXPORT_STRING_API static String numberToStringECMAScript(double);
WTF_EXPORT_STRING_API static String numberToStringFixedWidth(double, unsigned decimalPlaces);
// Find a single character or string, also with match function & latin1 forms.
size_t find(UChar c, unsigned start = 0) const
{ return m_impl ? m_impl->find(c, start) : notFound; }
size_t find(const String& str) const
{ return m_impl ? m_impl->find(str.impl()) : notFound; }
size_t find(const String& str, unsigned start) const
{ return m_impl ? m_impl->find(str.impl(), start) : notFound; }
size_t find(CharacterMatchFunctionPtr matchFunction, unsigned start = 0) const
{ return m_impl ? m_impl->find(matchFunction, start) : notFound; }
size_t find(const LChar* str, unsigned start = 0) const
{ return m_impl ? m_impl->find(str, start) : notFound; }
// Find the last instance of a single character or string.
size_t reverseFind(UChar c, unsigned start = UINT_MAX) const
{ return m_impl ? m_impl->reverseFind(c, start) : notFound; }
size_t reverseFind(const String& str, unsigned start = UINT_MAX) const
{ return m_impl ? m_impl->reverseFind(str.impl(), start) : notFound; }
// Case insensitive string matching.
size_t findIgnoringCase(const LChar* str, unsigned start = 0) const
{ return m_impl ? m_impl->findIgnoringCase(str, start) : notFound; }
size_t findIgnoringCase(const String& str, unsigned start = 0) const
{ return m_impl ? m_impl->findIgnoringCase(str.impl(), start) : notFound; }
size_t reverseFindIgnoringCase(const String& str, unsigned start = UINT_MAX) const
{ return m_impl ? m_impl->reverseFindIgnoringCase(str.impl(), start) : notFound; }
// Wrappers for find & reverseFind adding dynamic sensitivity check.
size_t find(const LChar* str, unsigned start, bool caseSensitive) const
{ return caseSensitive ? find(str, start) : findIgnoringCase(str, start); }
size_t find(const String& str, unsigned start, bool caseSensitive) const
{ return caseSensitive ? find(str, start) : findIgnoringCase(str, start); }
size_t reverseFind(const String& str, unsigned start, bool caseSensitive) const
{ return caseSensitive ? reverseFind(str, start) : reverseFindIgnoringCase(str, start); }
WTF_EXPORT_STRING_API const UChar* charactersWithNullTermination();
WTF_EXPORT_STRING_API UChar32 characterStartingAt(unsigned) const; // Ditto.
bool contains(UChar c) const { return find(c) != notFound; }
bool contains(const LChar* str, bool caseSensitive = true) const { return find(str, 0, caseSensitive) != notFound; }
bool contains(const String& str, bool caseSensitive = true) const { return find(str, 0, caseSensitive) != notFound; }
bool startsWith(const String& s, bool caseSensitive = true) const
{ return m_impl ? m_impl->startsWith(s.impl(), caseSensitive) : s.isEmpty(); }
bool startsWith(UChar character) const
{ return m_impl ? m_impl->startsWith(character) : false; }
template<unsigned matchLength>
bool startsWith(const char (&prefix)[matchLength], bool caseSensitive = true) const
{ return m_impl ? m_impl->startsWith<matchLength>(prefix, caseSensitive) : !matchLength; }
bool endsWith(const String& s, bool caseSensitive = true) const
{ return m_impl ? m_impl->endsWith(s.impl(), caseSensitive) : s.isEmpty(); }
bool endsWith(UChar character) const
{ return m_impl ? m_impl->endsWith(character) : false; }
template<unsigned matchLength>
bool endsWith(const char (&prefix)[matchLength], bool caseSensitive = true) const
{ return m_impl ? m_impl->endsWith<matchLength>(prefix, caseSensitive) : !matchLength; }
WTF_EXPORT_STRING_API void append(const String&);
WTF_EXPORT_STRING_API void append(LChar);
void append(char c) { append(static_cast<LChar>(c)); };
WTF_EXPORT_STRING_API void append(UChar);
WTF_EXPORT_STRING_API void append(const LChar*, unsigned length);
WTF_EXPORT_STRING_API void append(const UChar*, unsigned length);
WTF_EXPORT_STRING_API void insert(const String&, unsigned pos);
void insert(const UChar*, unsigned length, unsigned pos);
String& replace(UChar a, UChar b) { if (m_impl) m_impl = m_impl->replace(a, b); return *this; }
String& replace(UChar a, const String& b) { if (m_impl) m_impl = m_impl->replace(a, b.impl()); return *this; }
String& replace(const String& a, const String& b) { if (m_impl) m_impl = m_impl->replace(a.impl(), b.impl()); return *this; }
String& replace(unsigned index, unsigned len, const String& b) { if (m_impl) m_impl = m_impl->replace(index, len, b.impl()); return *this; }
template<unsigned charactersCount>
ALWAYS_INLINE String& replaceWithLiteral(UChar a, const char (&characters)[charactersCount])
{
if (m_impl)
m_impl = m_impl->replace(a, characters, charactersCount - 1);
return *this;
}
void makeLower() { if (m_impl) m_impl = m_impl->lower(); }
void makeUpper() { if (m_impl) m_impl = m_impl->upper(); }
void fill(UChar c) { if (m_impl) m_impl = m_impl->fill(c); }
WTF_EXPORT_STRING_API void truncate(unsigned len);
WTF_EXPORT_STRING_API void remove(unsigned pos, int len = 1);
WTF_EXPORT_STRING_API String substring(unsigned pos, unsigned len = UINT_MAX) const;
WTF_EXPORT_STRING_API String substringSharingImpl(unsigned pos, unsigned len = UINT_MAX) const;
String left(unsigned len) const { return substring(0, len); }
String right(unsigned len) const { return substring(length() - len, len); }
// Returns a lowercase/uppercase version of the string
WTF_EXPORT_STRING_API String lower() const;
WTF_EXPORT_STRING_API String upper() const;
WTF_EXPORT_STRING_API String stripWhiteSpace() const;
WTF_EXPORT_STRING_API String stripWhiteSpace(IsWhiteSpaceFunctionPtr) const;
WTF_EXPORT_STRING_API String simplifyWhiteSpace() const;
WTF_EXPORT_STRING_API String simplifyWhiteSpace(IsWhiteSpaceFunctionPtr) const;
WTF_EXPORT_STRING_API String removeCharacters(CharacterMatchFunctionPtr) const;
template<bool isSpecialCharacter(UChar)> bool isAllSpecialCharacters() const;
// Return the string with case folded for case insensitive comparison.
WTF_EXPORT_STRING_API String foldCase() const;
#if !PLATFORM(QT)
WTF_EXPORT_STRING_API static String format(const char *, ...) WTF_ATTRIBUTE_PRINTF(1, 2);
#else
WTF_EXPORT_STRING_API static String format(const char *, ...);
#endif
// Returns an uninitialized string. The characters needs to be written
// into the buffer returned in data before the returned string is used.
// Failure to do this will have unpredictable results.
static String createUninitialized(unsigned length, UChar*& data) { return StringImpl::createUninitialized(length, data); }
static String createUninitialized(unsigned length, LChar*& data) { return StringImpl::createUninitialized(length, data); }
WTF_EXPORT_STRING_API void split(const String& separator, bool allowEmptyEntries, Vector<String>& result) const;
void split(const String& separator, Vector<String>& result) const
{
split(separator, false, result);
}
WTF_EXPORT_STRING_API void split(UChar separator, bool allowEmptyEntries, Vector<String>& result) const;
void split(UChar separator, Vector<String>& result) const
{
split(separator, false, result);
}
WTF_EXPORT_STRING_API int toIntStrict(bool* ok = 0, int base = 10) const;
WTF_EXPORT_STRING_API unsigned toUIntStrict(bool* ok = 0, int base = 10) const;
WTF_EXPORT_STRING_API int64_t toInt64Strict(bool* ok = 0, int base = 10) const;
uint64_t toUInt64Strict(bool* ok = 0, int base = 10) const;
intptr_t toIntPtrStrict(bool* ok = 0, int base = 10) const;
WTF_EXPORT_STRING_API int toInt(bool* ok = 0) const;
WTF_EXPORT_STRING_API unsigned toUInt(bool* ok = 0) const;
int64_t toInt64(bool* ok = 0) const;
WTF_EXPORT_STRING_API uint64_t toUInt64(bool* ok = 0) const;
WTF_EXPORT_STRING_API intptr_t toIntPtr(bool* ok = 0) const;
// FIXME: Like the strict functions above, these give false for "ok" when there is trailing garbage.
// Like the non-strict functions above, these return the value when there is trailing garbage.
// It would be better if these were more consistent with the above functions instead.
WTF_EXPORT_STRING_API double toDouble(bool* ok = 0) const;
WTF_EXPORT_STRING_API float toFloat(bool* ok = 0) const;
bool percentage(int& percentage) const;
WTF_EXPORT_STRING_API String isolatedCopy() const;
// Prevent Strings from being implicitly convertable to bool as it will be ambiguous on any platform that
// allows implicit conversion to another pointer type (e.g., Mac allows implicit conversion to NSString*).
typedef struct ImplicitConversionFromWTFStringToBoolDisallowedA* (String::*UnspecifiedBoolTypeA);
typedef struct ImplicitConversionFromWTFStringToBoolDisallowedB* (String::*UnspecifiedBoolTypeB);
operator UnspecifiedBoolTypeA() const;
operator UnspecifiedBoolTypeB() const;
#if USE(CF)
String(CFStringRef);
RetainPtr<CFStringRef> createCFString() const;
#endif
#ifdef __OBJC__
String(NSString*);
// This conversion maps NULL to "", which loses the meaning of NULL, but we
// need this mapping because AppKit crashes when passed nil NSStrings.
operator NSString*() const { if (!m_impl) return @""; return *m_impl; }
#endif
#if PLATFORM(QT)
WTF_EXPORT_STRING_API String(const QString&);
WTF_EXPORT_STRING_API String(const QStringRef&);
WTF_EXPORT_STRING_API operator QString() const;
#endif
#if PLATFORM(WX)
WTF_EXPORT_PRIVATE String(const wxString&);
WTF_EXPORT_PRIVATE operator wxString() const;
#endif
#if PLATFORM(BLACKBERRY)
String(const BlackBerry::Platform::String&);
operator BlackBerry::Platform::String() const;
#endif
WTF_EXPORT_STRING_API static String make8BitFrom16BitSource(const UChar*, size_t);
WTF_EXPORT_STRING_API static String make16BitFrom8BitSource(const LChar*, size_t);
// String::fromUTF8 will return a null string if
// the input data contains invalid UTF-8 sequences.
WTF_EXPORT_STRING_API static String fromUTF8(const LChar*, size_t);
WTF_EXPORT_STRING_API static String fromUTF8(const LChar*);
static String fromUTF8(const char* s, size_t length) { return fromUTF8(reinterpret_cast<const LChar*>(s), length); };
static String fromUTF8(const char* s) { return fromUTF8(reinterpret_cast<const LChar*>(s)); };
static String fromUTF8(const CString&);
// Tries to convert the passed in string to UTF-8, but will fall back to Latin-1 if the string is not valid UTF-8.
WTF_EXPORT_STRING_API static String fromUTF8WithLatin1Fallback(const LChar*, size_t);
static String fromUTF8WithLatin1Fallback(const char* s, size_t length) { return fromUTF8WithLatin1Fallback(reinterpret_cast<const LChar*>(s), length); };
// Determines the writing direction using the Unicode Bidi Algorithm rules P2 and P3.
WTF::Unicode::Direction defaultWritingDirection(bool* hasStrongDirectionality = 0) const
{
if (m_impl)
return m_impl->defaultWritingDirection(hasStrongDirectionality);
if (hasStrongDirectionality)
*hasStrongDirectionality = false;
return WTF::Unicode::LeftToRight;
}
bool containsOnlyASCII() const;
bool containsOnlyLatin1() const;
bool containsOnlyWhitespace() const { return !m_impl || m_impl->containsOnlyWhitespace(); }
// Hash table deleted values, which are only constructed and never copied or destroyed.
String(WTF::HashTableDeletedValueType) : m_impl(WTF::HashTableDeletedValue) { }
bool isHashTableDeletedValue() const { return m_impl.isHashTableDeletedValue(); }
#ifndef NDEBUG
WTF_EXPORT_STRING_API void show() const;
#endif
// Workaround for a compiler bug. Use operator[] instead.
UChar characterAt(unsigned index) const
{
if (!m_impl || index >= m_impl->length())
return 0;
return (*m_impl)[index];
}
private:
template <typename CharacterType>
void removeInternal(const CharacterType*, unsigned, int);
RefPtr<StringImpl> m_impl;
};
inline bool operator==(const String& a, const String& b) { return equal(a.impl(), b.impl()); }
inline bool operator==(const String& a, const LChar* b) { return equal(a.impl(), b); }
inline bool operator==(const String& a, const char* b) { return equal(a.impl(), reinterpret_cast<const LChar*>(b)); }
inline bool operator==(const LChar* a, const String& b) { return equal(a, b.impl()); }
inline bool operator==(const char* a, const String& b) { return equal(reinterpret_cast<const LChar*>(a), b.impl()); }
template<size_t inlineCapacity>
inline bool operator==(const Vector<char, inlineCapacity>& a, const String& b) { return equal(b.impl(), a.data(), a.size()); }
template<size_t inlineCapacity>
inline bool operator==(const String& a, const Vector<char, inlineCapacity>& b) { return b == a; }
inline bool operator!=(const String& a, const String& b) { return !equal(a.impl(), b.impl()); }
inline bool operator!=(const String& a, const LChar* b) { return !equal(a.impl(), b); }
inline bool operator!=(const String& a, const char* b) { return !equal(a.impl(), reinterpret_cast<const LChar*>(b)); }
inline bool operator!=(const LChar* a, const String& b) { return !equal(a, b.impl()); }
inline bool operator!=(const char* a, const String& b) { return !equal(reinterpret_cast<const LChar*>(a), b.impl()); }
template<size_t inlineCapacity>
inline bool operator!=(const Vector<char, inlineCapacity>& a, const String& b) { return !(a == b); }
template<size_t inlineCapacity>
inline bool operator!=(const String& a, const Vector<char, inlineCapacity>& b) { return b != a; }
inline bool equalIgnoringCase(const String& a, const String& b) { return equalIgnoringCase(a.impl(), b.impl()); }
inline bool equalIgnoringCase(const String& a, const LChar* b) { return equalIgnoringCase(a.impl(), b); }
inline bool equalIgnoringCase(const String& a, const char* b) { return equalIgnoringCase(a.impl(), reinterpret_cast<const LChar*>(b)); }
inline bool equalIgnoringCase(const LChar* a, const String& b) { return equalIgnoringCase(a, b.impl()); }
inline bool equalIgnoringCase(const char* a, const String& b) { return equalIgnoringCase(reinterpret_cast<const LChar*>(a), b.impl()); }
inline bool equalPossiblyIgnoringCase(const String& a, const String& b, bool ignoreCase)
{
return ignoreCase ? equalIgnoringCase(a, b) : (a == b);
}
inline bool equalIgnoringNullity(const String& a, const String& b) { return equalIgnoringNullity(a.impl(), b.impl()); }
template<size_t inlineCapacity>
inline bool equalIgnoringNullity(const Vector<UChar, inlineCapacity>& a, const String& b) { return equalIgnoringNullity(a, b.impl()); }
inline bool operator!(const String& str) { return str.isNull(); }
inline void swap(String& a, String& b) { a.swap(b); }
// Definitions of string operations
template<size_t inlineCapacity>
String::String(const Vector<UChar, inlineCapacity>& vector)
: m_impl(vector.size() ? StringImpl::create(vector.data(), vector.size()) : 0)
{
}
template<>
inline const LChar* String::getCharacters<LChar>() const
{
ASSERT(is8Bit());
return characters8();
}
template<>
inline const UChar* String::getCharacters<UChar>() const
{
ASSERT(!is8Bit());
return characters16();
}
template<>
inline const LChar* String::getCharactersWithUpconvert<LChar>() const
{
ASSERT(is8Bit());
return characters8();
}
template<>
inline const UChar* String::getCharactersWithUpconvert<UChar>() const
{
return characters();
}
inline bool String::containsOnlyLatin1() const
{
if (isEmpty())
return true;
if (is8Bit())
return true;
const UChar* characters = characters16();
UChar ored = 0;
for (size_t i = 0; i < m_impl->length(); ++i)
ored |= characters[i];
return !(ored & 0xFF00);
}
#ifdef __OBJC__
// This is for situations in WebKit where the long standing behavior has been
// "nil if empty", so we try to maintain longstanding behavior for the sake of
// entrenched clients
inline NSString* nsStringNilIfEmpty(const String& str) { return str.isEmpty() ? nil : (NSString*)str; }
#endif
inline bool String::containsOnlyASCII() const
{
if (isEmpty())
return true;
if (is8Bit())
return charactersAreAllASCII(characters8(), m_impl->length());
return charactersAreAllASCII(characters16(), m_impl->length());
}
WTF_EXPORT_STRING_API int codePointCompare(const String&, const String&);
inline bool codePointCompareLessThan(const String& a, const String& b)
{
return codePointCompare(a.impl(), b.impl()) < 0;
}
inline void append(Vector<UChar>& vector, const String& string)
{
vector.append(string.characters(), string.length());
}
template<typename CharacterType>
inline void appendNumber(Vector<CharacterType>& vector, unsigned char number)
{
int numberLength = number > 99 ? 3 : (number > 9 ? 2 : 1);
size_t vectorSize = vector.size();
vector.grow(vectorSize + numberLength);
switch (numberLength) {
case 3:
vector[vectorSize + 2] = number % 10 + '0';
number /= 10;
case 2:
vector[vectorSize + 1] = number % 10 + '0';
number /= 10;
case 1:
vector[vectorSize] = number % 10 + '0';
}
}
template<bool isSpecialCharacter(UChar), typename CharacterType>
inline bool isAllSpecialCharacters(const CharacterType* characters, size_t length)
{
for (size_t i = 0; i < length; ++i) {
if (!isSpecialCharacter(characters[i]))
return false;
}
return true;
}
template<bool isSpecialCharacter(UChar)>
inline bool String::isAllSpecialCharacters() const
{
size_t len = length();
if (!len)
return true;
if (is8Bit())
return WTF::isAllSpecialCharacters<isSpecialCharacter, LChar>(characters8(), len);
return WTF::isAllSpecialCharacters<isSpecialCharacter, UChar>(characters(), len);
}
// StringHash is the default hash for String
template<typename T> struct DefaultHash;
template<> struct DefaultHash<String> {
typedef StringHash Hash;
};
template <> struct VectorTraits<String> : SimpleClassVectorTraits { };
class ASCIILiteral {
public:
explicit ASCIILiteral(const char* characters) : m_characters(characters) { }
operator const char*() { return m_characters; }
private:
const char* m_characters;
};
// Shared global empty string.
WTF_EXPORT_STRING_API const String& emptyString();
}
using WTF::CString;
using WTF::KeepTrailingZeros;
using WTF::String;
using WTF::emptyString;
using WTF::append;
using WTF::appendNumber;
using WTF::charactersAreAllASCII;
using WTF::charactersToIntStrict;
using WTF::charactersToUIntStrict;
using WTF::charactersToInt64Strict;
using WTF::charactersToUInt64Strict;
using WTF::charactersToIntPtrStrict;
using WTF::charactersToInt;
using WTF::charactersToUInt;
using WTF::charactersToInt64;
using WTF::charactersToUInt64;
using WTF::charactersToIntPtr;
using WTF::charactersToDouble;
using WTF::charactersToFloat;
using WTF::equal;
using WTF::equalIgnoringCase;
using WTF::find;
using WTF::isAllSpecialCharacters;
using WTF::isSpaceOrNewline;
using WTF::reverseFind;
using WTF::ASCIILiteral;
#include <wtf/text/AtomicString.h>
#endif