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| 1 /* | |
| 2 * (C) 1999 Lars Knoll (knoll@kde.org) | |
| 3 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc.
All rights reserved. | |
| 4 * | |
| 5 * This library is free software; you can redistribute it and/or | |
| 6 * modify it under the terms of the GNU Library General Public | |
| 7 * License as published by the Free Software Foundation; either | |
| 8 * version 2 of the License, or (at your option) any later version. | |
| 9 * | |
| 10 * This library is distributed in the hope that it will be useful, | |
| 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 * Library General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU Library General Public License | |
| 16 * along with this library; see the file COPYING.LIB. If not, write to | |
| 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 18 * Boston, MA 02110-1301, USA. | |
| 19 * | |
| 20 */ | |
| 21 | |
| 22 #ifndef WTFString_h | |
| 23 #define WTFString_h | |
| 24 | |
| 25 // This file would be called String.h, but that conflicts with <string.h> | |
| 26 // on systems without case-sensitive file systems. | |
| 27 | |
| 28 #include <wtf/text/ASCIIFastPath.h> | |
| 29 #include <wtf/text/StringImpl.h> | |
| 30 | |
| 31 #ifdef __OBJC__ | |
| 32 #include <objc/objc.h> | |
| 33 #endif | |
| 34 | |
| 35 namespace WTF { | |
| 36 | |
| 37 class CString; | |
| 38 class MemoryObjectInfo; | |
| 39 struct StringHash; | |
| 40 | |
| 41 // Declarations of string operations | |
| 42 | |
| 43 WTF_EXPORT_STRING_API int charactersToIntStrict(const LChar*, size_t, bool* ok =
0, int base = 10); | |
| 44 WTF_EXPORT_STRING_API int charactersToIntStrict(const UChar*, size_t, bool* ok =
0, int base = 10); | |
| 45 WTF_EXPORT_STRING_API unsigned charactersToUIntStrict(const LChar*, size_t, bool
* ok = 0, int base = 10); | |
| 46 WTF_EXPORT_STRING_API unsigned charactersToUIntStrict(const UChar*, size_t, bool
* ok = 0, int base = 10); | |
| 47 int64_t charactersToInt64Strict(const LChar*, size_t, bool* ok = 0, int base = 1
0); | |
| 48 int64_t charactersToInt64Strict(const UChar*, size_t, bool* ok = 0, int base = 1
0); | |
| 49 uint64_t charactersToUInt64Strict(const LChar*, size_t, bool* ok = 0, int base =
10); | |
| 50 uint64_t charactersToUInt64Strict(const UChar*, size_t, bool* ok = 0, int base =
10); | |
| 51 intptr_t charactersToIntPtrStrict(const LChar*, size_t, bool* ok = 0, int base =
10); | |
| 52 intptr_t charactersToIntPtrStrict(const UChar*, size_t, bool* ok = 0, int base =
10); | |
| 53 | |
| 54 int charactersToInt(const LChar*, size_t, bool* ok = 0); // ignores trailing gar
bage | |
| 55 WTF_EXPORT_STRING_API int charactersToInt(const UChar*, size_t, bool* ok = 0); /
/ ignores trailing garbage | |
| 56 unsigned charactersToUInt(const LChar*, size_t, bool* ok = 0); // ignores traili
ng garbage | |
| 57 unsigned charactersToUInt(const UChar*, size_t, bool* ok = 0); // ignores traili
ng garbage | |
| 58 int64_t charactersToInt64(const LChar*, size_t, bool* ok = 0); // ignores traili
ng garbage | |
| 59 int64_t charactersToInt64(const UChar*, size_t, bool* ok = 0); // ignores traili
ng garbage | |
| 60 uint64_t charactersToUInt64(const LChar*, size_t, bool* ok = 0); // ignores trai
ling garbage | |
| 61 uint64_t charactersToUInt64(const UChar*, size_t, bool* ok = 0); // ignores trai
ling garbage | |
| 62 intptr_t charactersToIntPtr(const LChar*, size_t, bool* ok = 0); // ignores trai
ling garbage | |
| 63 intptr_t charactersToIntPtr(const UChar*, size_t, bool* ok = 0); // ignores trai
ling garbage | |
| 64 | |
| 65 // FIXME: Like the strict functions above, these give false for "ok" when there
is trailing garbage. | |
| 66 // Like the non-strict functions above, these return the value when there is tra
iling garbage. | |
| 67 // It would be better if these were more consistent with the above functions ins
tead. | |
| 68 WTF_EXPORT_STRING_API double charactersToDouble(const LChar*, size_t, bool* ok =
0); | |
| 69 WTF_EXPORT_STRING_API double charactersToDouble(const UChar*, size_t, bool* ok =
0); | |
| 70 float charactersToFloat(const LChar*, size_t, bool* ok = 0); | |
| 71 WTF_EXPORT_STRING_API float charactersToFloat(const UChar*, size_t, bool* ok = 0
); | |
| 72 WTF_EXPORT_STRING_API float charactersToFloat(const LChar*, size_t, size_t& pars
edLength); | |
| 73 WTF_EXPORT_STRING_API float charactersToFloat(const UChar*, size_t, size_t& pars
edLength); | |
| 74 | |
| 75 class ASCIILiteral; | |
| 76 | |
| 77 enum TrailingZerosTruncatingPolicy { | |
| 78 KeepTrailingZeros, | |
| 79 TruncateTrailingZeros | |
| 80 }; | |
| 81 | |
| 82 template<bool isSpecialCharacter(UChar), typename CharacterType> | |
| 83 bool isAllSpecialCharacters(const CharacterType*, size_t); | |
| 84 | |
| 85 class String { | |
| 86 public: | |
| 87 // Construct a null string, distinguishable from an empty string. | |
| 88 String() { } | |
| 89 | |
| 90 // Construct a string with UTF-16 data. | |
| 91 WTF_EXPORT_STRING_API String(const UChar* characters, unsigned length); | |
| 92 | |
| 93 // Construct a string by copying the contents of a vector. To avoid | |
| 94 // copying, consider using String::adopt instead. | |
| 95 // This method will never create a null string. Vectors with size() == 0 | |
| 96 // will return the empty string. | |
| 97 // NOTE: This is different from String(vector.data(), vector.size()) | |
| 98 // which will sometimes return a null string when vector.data() is null | |
| 99 // which can only occur for vectors without inline capacity. | |
| 100 // See: https://bugs.webkit.org/show_bug.cgi?id=109792 | |
| 101 template<size_t inlineCapacity> | |
| 102 explicit String(const Vector<UChar, inlineCapacity>&); | |
| 103 | |
| 104 // Construct a string with UTF-16 data, from a null-terminated source. | |
| 105 WTF_EXPORT_STRING_API String(const UChar*); | |
| 106 | |
| 107 // Construct a string with latin1 data. | |
| 108 WTF_EXPORT_STRING_API String(const LChar* characters, unsigned length); | |
| 109 WTF_EXPORT_STRING_API String(const char* characters, unsigned length); | |
| 110 | |
| 111 // Construct a string with latin1 data, from a null-terminated source. | |
| 112 WTF_EXPORT_STRING_API String(const LChar* characters); | |
| 113 WTF_EXPORT_STRING_API String(const char* characters); | |
| 114 | |
| 115 // Construct a string referencing an existing StringImpl. | |
| 116 String(StringImpl* impl) : m_impl(impl) { } | |
| 117 String(PassRefPtr<StringImpl> impl) : m_impl(impl) { } | |
| 118 String(RefPtr<StringImpl> impl) : m_impl(impl) { } | |
| 119 | |
| 120 // Construct a string from a constant string literal. | |
| 121 WTF_EXPORT_STRING_API String(ASCIILiteral characters); | |
| 122 | |
| 123 // Construct a string from a constant string literal. | |
| 124 // This constructor is the "big" version, as it put the length in the functi
on call and generate bigger code. | |
| 125 enum ConstructFromLiteralTag { ConstructFromLiteral }; | |
| 126 template<unsigned charactersCount> | |
| 127 String(const char (&characters)[charactersCount], ConstructFromLiteralTag) :
m_impl(StringImpl::createFromLiteral<charactersCount>(characters)) { } | |
| 128 | |
| 129 #if COMPILER_SUPPORTS(CXX_RVALUE_REFERENCES) | |
| 130 // We have to declare the copy constructor and copy assignment operator as w
ell, otherwise | |
| 131 // they'll be implicitly deleted by adding the move constructor and move ass
ignment operator. | |
| 132 String(const String& other) : m_impl(other.m_impl) { } | |
| 133 String(String&& other) : m_impl(other.m_impl.release()) { } | |
| 134 String& operator=(const String& other) { m_impl = other.m_impl; return *this
; } | |
| 135 String& operator=(String&& other) { m_impl = other.m_impl.release(); return
*this; } | |
| 136 #endif | |
| 137 | |
| 138 // Inline the destructor. | |
| 139 ALWAYS_INLINE ~String() { } | |
| 140 | |
| 141 void swap(String& o) { m_impl.swap(o.m_impl); } | |
| 142 | |
| 143 static String adopt(StringBuffer<LChar>& buffer) { return StringImpl::adopt(
buffer); } | |
| 144 static String adopt(StringBuffer<UChar>& buffer) { return StringImpl::adopt(
buffer); } | |
| 145 template<typename CharacterType, size_t inlineCapacity> | |
| 146 static String adopt(Vector<CharacterType, inlineCapacity>& vector) { return
StringImpl::adopt(vector); } | |
| 147 | |
| 148 bool isNull() const { return !m_impl; } | |
| 149 bool isEmpty() const { return !m_impl || !m_impl->length(); } | |
| 150 | |
| 151 StringImpl* impl() const { return m_impl.get(); } | |
| 152 PassRefPtr<StringImpl> releaseImpl() { return m_impl.release(); } | |
| 153 | |
| 154 unsigned length() const | |
| 155 { | |
| 156 if (!m_impl) | |
| 157 return 0; | |
| 158 return m_impl->length(); | |
| 159 } | |
| 160 | |
| 161 const UChar* characters() const | |
| 162 { | |
| 163 if (!m_impl) | |
| 164 return 0; | |
| 165 return m_impl->characters(); | |
| 166 } | |
| 167 | |
| 168 const LChar* characters8() const | |
| 169 { | |
| 170 if (!m_impl) | |
| 171 return 0; | |
| 172 ASSERT(m_impl->is8Bit()); | |
| 173 return m_impl->characters8(); | |
| 174 } | |
| 175 | |
| 176 const UChar* characters16() const | |
| 177 { | |
| 178 if (!m_impl) | |
| 179 return 0; | |
| 180 ASSERT(!m_impl->is8Bit()); | |
| 181 return m_impl->characters16(); | |
| 182 } | |
| 183 | |
| 184 // Return characters8() or characters16() depending on CharacterType. | |
| 185 template <typename CharacterType> | |
| 186 inline const CharacterType* getCharacters() const; | |
| 187 | |
| 188 // Like getCharacters() and upconvert if CharacterType is UChar on a 8bit st
ring. | |
| 189 template <typename CharacterType> | |
| 190 inline const CharacterType* getCharactersWithUpconvert() const; | |
| 191 | |
| 192 bool is8Bit() const { return m_impl->is8Bit(); } | |
| 193 | |
| 194 unsigned sizeInBytes() const | |
| 195 { | |
| 196 if (!m_impl) | |
| 197 return 0; | |
| 198 return m_impl->length() * (is8Bit() ? sizeof(LChar) : sizeof(UChar)); | |
| 199 } | |
| 200 | |
| 201 WTF_EXPORT_STRING_API CString ascii() const; | |
| 202 WTF_EXPORT_STRING_API CString latin1() const; | |
| 203 | |
| 204 typedef enum { | |
| 205 LenientConversion, | |
| 206 StrictConversion, | |
| 207 StrictConversionReplacingUnpairedSurrogatesWithFFFD, | |
| 208 } ConversionMode; | |
| 209 | |
| 210 WTF_EXPORT_STRING_API CString utf8(ConversionMode = LenientConversion) const
; | |
| 211 | |
| 212 UChar operator[](unsigned index) const | |
| 213 { | |
| 214 if (!m_impl || index >= m_impl->length()) | |
| 215 return 0; | |
| 216 return (*m_impl)[index]; | |
| 217 } | |
| 218 | |
| 219 WTF_EXPORT_STRING_API static String number(int); | |
| 220 WTF_EXPORT_STRING_API static String number(unsigned int); | |
| 221 WTF_EXPORT_STRING_API static String number(long); | |
| 222 WTF_EXPORT_STRING_API static String number(unsigned long); | |
| 223 WTF_EXPORT_STRING_API static String number(long long); | |
| 224 WTF_EXPORT_STRING_API static String number(unsigned long long); | |
| 225 | |
| 226 WTF_EXPORT_STRING_API static String number(double, unsigned precision = 6, T
railingZerosTruncatingPolicy = TruncateTrailingZeros); | |
| 227 | |
| 228 // Number to String conversion following the ECMAScript definition. | |
| 229 WTF_EXPORT_STRING_API static String numberToStringECMAScript(double); | |
| 230 WTF_EXPORT_STRING_API static String numberToStringFixedWidth(double, unsigne
d decimalPlaces); | |
| 231 | |
| 232 // Find a single character or string, also with match function & latin1 form
s. | |
| 233 size_t find(UChar c, unsigned start = 0) const | |
| 234 { return m_impl ? m_impl->find(c, start) : notFound; } | |
| 235 | |
| 236 size_t find(const String& str) const | |
| 237 { return m_impl ? m_impl->find(str.impl()) : notFound; } | |
| 238 size_t find(const String& str, unsigned start) const | |
| 239 { return m_impl ? m_impl->find(str.impl(), start) : notFound; } | |
| 240 | |
| 241 size_t find(CharacterMatchFunctionPtr matchFunction, unsigned start = 0) con
st | |
| 242 { return m_impl ? m_impl->find(matchFunction, start) : notFound; } | |
| 243 size_t find(const LChar* str, unsigned start = 0) const | |
| 244 { return m_impl ? m_impl->find(str, start) : notFound; } | |
| 245 | |
| 246 size_t findNextLineStart(unsigned start = 0) const | |
| 247 { return m_impl ? m_impl->findNextLineStart(start) : notFound; } | |
| 248 | |
| 249 // Find the last instance of a single character or string. | |
| 250 size_t reverseFind(UChar c, unsigned start = UINT_MAX) const | |
| 251 { return m_impl ? m_impl->reverseFind(c, start) : notFound; } | |
| 252 size_t reverseFind(const String& str, unsigned start = UINT_MAX) const | |
| 253 { return m_impl ? m_impl->reverseFind(str.impl(), start) : notFound; } | |
| 254 | |
| 255 // Case insensitive string matching. | |
| 256 size_t findIgnoringCase(const LChar* str, unsigned start = 0) const | |
| 257 { return m_impl ? m_impl->findIgnoringCase(str, start) : notFound; } | |
| 258 size_t findIgnoringCase(const String& str, unsigned start = 0) const | |
| 259 { return m_impl ? m_impl->findIgnoringCase(str.impl(), start) : notFound
; } | |
| 260 size_t reverseFindIgnoringCase(const String& str, unsigned start = UINT_MAX)
const | |
| 261 { return m_impl ? m_impl->reverseFindIgnoringCase(str.impl(), start) : n
otFound; } | |
| 262 | |
| 263 // Wrappers for find & reverseFind adding dynamic sensitivity check. | |
| 264 size_t find(const LChar* str, unsigned start, bool caseSensitive) const | |
| 265 { return caseSensitive ? find(str, start) : findIgnoringCase(str, start)
; } | |
| 266 size_t find(const String& str, unsigned start, bool caseSensitive) const | |
| 267 { return caseSensitive ? find(str, start) : findIgnoringCase(str, start)
; } | |
| 268 size_t reverseFind(const String& str, unsigned start, bool caseSensitive) co
nst | |
| 269 { return caseSensitive ? reverseFind(str, start) : reverseFindIgnoringCa
se(str, start); } | |
| 270 | |
| 271 WTF_EXPORT_STRING_API const UChar* charactersWithNullTermination(); | |
| 272 | |
| 273 WTF_EXPORT_STRING_API UChar32 characterStartingAt(unsigned) const; // Ditto. | |
| 274 | |
| 275 bool contains(UChar c) const { return find(c) != notFound; } | |
| 276 bool contains(const LChar* str, bool caseSensitive = true) const { return fi
nd(str, 0, caseSensitive) != notFound; } | |
| 277 bool contains(const String& str, bool caseSensitive = true) const { return f
ind(str, 0, caseSensitive) != notFound; } | |
| 278 | |
| 279 bool startsWith(const String& s, bool caseSensitive = true) const | |
| 280 { return m_impl ? m_impl->startsWith(s.impl(), caseSensitive) : s.isEmpt
y(); } | |
| 281 bool startsWith(UChar character) const | |
| 282 { return m_impl ? m_impl->startsWith(character) : false; } | |
| 283 template<unsigned matchLength> | |
| 284 bool startsWith(const char (&prefix)[matchLength], bool caseSensitive = true
) const | |
| 285 { return m_impl ? m_impl->startsWith<matchLength>(prefix, caseSensitive)
: !matchLength; } | |
| 286 | |
| 287 bool endsWith(const String& s, bool caseSensitive = true) const | |
| 288 { return m_impl ? m_impl->endsWith(s.impl(), caseSensitive) : s.isEmpty(
); } | |
| 289 bool endsWith(UChar character) const | |
| 290 { return m_impl ? m_impl->endsWith(character) : false; } | |
| 291 template<unsigned matchLength> | |
| 292 bool endsWith(const char (&prefix)[matchLength], bool caseSensitive = true)
const | |
| 293 { return m_impl ? m_impl->endsWith<matchLength>(prefix, caseSensitive) :
!matchLength; } | |
| 294 | |
| 295 WTF_EXPORT_STRING_API void append(const String&); | |
| 296 WTF_EXPORT_STRING_API void append(LChar); | |
| 297 void append(char c) { append(static_cast<LChar>(c)); }; | |
| 298 WTF_EXPORT_STRING_API void append(UChar); | |
| 299 WTF_EXPORT_STRING_API void append(const LChar*, unsigned length); | |
| 300 WTF_EXPORT_STRING_API void append(const UChar*, unsigned length); | |
| 301 WTF_EXPORT_STRING_API void insert(const String&, unsigned pos); | |
| 302 void insert(const UChar*, unsigned length, unsigned pos); | |
| 303 | |
| 304 String& replace(UChar a, UChar b) { if (m_impl) m_impl = m_impl->replace(a,
b); return *this; } | |
| 305 String& replace(UChar a, const String& b) { if (m_impl) m_impl = m_impl->rep
lace(a, b.impl()); return *this; } | |
| 306 String& replace(const String& a, const String& b) { if (m_impl) m_impl = m_i
mpl->replace(a.impl(), b.impl()); return *this; } | |
| 307 String& replace(unsigned index, unsigned len, const String& b) { if (m_impl)
m_impl = m_impl->replace(index, len, b.impl()); return *this; } | |
| 308 | |
| 309 template<unsigned charactersCount> | |
| 310 ALWAYS_INLINE String& replaceWithLiteral(UChar a, const char (&characters)[c
haractersCount]) | |
| 311 { | |
| 312 if (m_impl) | |
| 313 m_impl = m_impl->replace(a, characters, charactersCount - 1); | |
| 314 | |
| 315 return *this; | |
| 316 } | |
| 317 | |
| 318 void makeLower() { if (m_impl) m_impl = m_impl->lower(); } | |
| 319 void makeUpper() { if (m_impl) m_impl = m_impl->upper(); } | |
| 320 void fill(UChar c) { if (m_impl) m_impl = m_impl->fill(c); } | |
| 321 | |
| 322 WTF_EXPORT_STRING_API void truncate(unsigned len); | |
| 323 WTF_EXPORT_STRING_API void remove(unsigned pos, int len = 1); | |
| 324 | |
| 325 WTF_EXPORT_STRING_API String substring(unsigned pos, unsigned len = UINT_MAX
) const; | |
| 326 WTF_EXPORT_STRING_API String substringSharingImpl(unsigned pos, unsigned len
= UINT_MAX) const; | |
| 327 String left(unsigned len) const { return substring(0, len); } | |
| 328 String right(unsigned len) const { return substring(length() - len, len); } | |
| 329 | |
| 330 // Returns a lowercase/uppercase version of the string | |
| 331 WTF_EXPORT_STRING_API String lower() const; | |
| 332 WTF_EXPORT_STRING_API String upper() const; | |
| 333 | |
| 334 WTF_EXPORT_STRING_API String stripWhiteSpace() const; | |
| 335 WTF_EXPORT_STRING_API String stripWhiteSpace(IsWhiteSpaceFunctionPtr) const; | |
| 336 WTF_EXPORT_STRING_API String simplifyWhiteSpace() const; | |
| 337 WTF_EXPORT_STRING_API String simplifyWhiteSpace(IsWhiteSpaceFunctionPtr) con
st; | |
| 338 | |
| 339 WTF_EXPORT_STRING_API String removeCharacters(CharacterMatchFunctionPtr) con
st; | |
| 340 template<bool isSpecialCharacter(UChar)> bool isAllSpecialCharacters() const
; | |
| 341 | |
| 342 // Return the string with case folded for case insensitive comparison. | |
| 343 WTF_EXPORT_STRING_API String foldCase() const; | |
| 344 | |
| 345 WTF_EXPORT_STRING_API static String format(const char *, ...) WTF_ATTRIBUTE_
PRINTF(1, 2); | |
| 346 | |
| 347 // Returns an uninitialized string. The characters needs to be written | |
| 348 // into the buffer returned in data before the returned string is used. | |
| 349 // Failure to do this will have unpredictable results. | |
| 350 static String createUninitialized(unsigned length, UChar*& data) { return St
ringImpl::createUninitialized(length, data); } | |
| 351 static String createUninitialized(unsigned length, LChar*& data) { return St
ringImpl::createUninitialized(length, data); } | |
| 352 | |
| 353 WTF_EXPORT_STRING_API void split(const String& separator, bool allowEmptyEnt
ries, Vector<String>& result) const; | |
| 354 void split(const String& separator, Vector<String>& result) const | |
| 355 { | |
| 356 split(separator, false, result); | |
| 357 } | |
| 358 WTF_EXPORT_STRING_API void split(UChar separator, bool allowEmptyEntries, Ve
ctor<String>& result) const; | |
| 359 void split(UChar separator, Vector<String>& result) const | |
| 360 { | |
| 361 split(separator, false, result); | |
| 362 } | |
| 363 | |
| 364 WTF_EXPORT_STRING_API int toIntStrict(bool* ok = 0, int base = 10) const; | |
| 365 WTF_EXPORT_STRING_API unsigned toUIntStrict(bool* ok = 0, int base = 10) con
st; | |
| 366 WTF_EXPORT_STRING_API int64_t toInt64Strict(bool* ok = 0, int base = 10) con
st; | |
| 367 uint64_t toUInt64Strict(bool* ok = 0, int base = 10) const; | |
| 368 intptr_t toIntPtrStrict(bool* ok = 0, int base = 10) const; | |
| 369 | |
| 370 WTF_EXPORT_STRING_API int toInt(bool* ok = 0) const; | |
| 371 WTF_EXPORT_STRING_API unsigned toUInt(bool* ok = 0) const; | |
| 372 int64_t toInt64(bool* ok = 0) const; | |
| 373 WTF_EXPORT_STRING_API uint64_t toUInt64(bool* ok = 0) const; | |
| 374 WTF_EXPORT_STRING_API intptr_t toIntPtr(bool* ok = 0) const; | |
| 375 | |
| 376 // FIXME: Like the strict functions above, these give false for "ok" when th
ere is trailing garbage. | |
| 377 // Like the non-strict functions above, these return the value when there is
trailing garbage. | |
| 378 // It would be better if these were more consistent with the above functions
instead. | |
| 379 WTF_EXPORT_STRING_API double toDouble(bool* ok = 0) const; | |
| 380 WTF_EXPORT_STRING_API float toFloat(bool* ok = 0) const; | |
| 381 | |
| 382 bool percentage(int& percentage) const; | |
| 383 | |
| 384 WTF_EXPORT_STRING_API String isolatedCopy() const; | |
| 385 WTF_EXPORT_STRING_API bool isSafeToSendToAnotherThread() const; | |
| 386 | |
| 387 // Prevent Strings from being implicitly convertable to bool as it will be a
mbiguous on any platform that | |
| 388 // allows implicit conversion to another pointer type (e.g., Mac allows impl
icit conversion to NSString*). | |
| 389 typedef struct ImplicitConversionFromWTFStringToBoolDisallowedA* (String::*U
nspecifiedBoolTypeA); | |
| 390 typedef struct ImplicitConversionFromWTFStringToBoolDisallowedB* (String::*U
nspecifiedBoolTypeB); | |
| 391 operator UnspecifiedBoolTypeA() const; | |
| 392 operator UnspecifiedBoolTypeB() const; | |
| 393 | |
| 394 #if USE(CF) | |
| 395 String(CFStringRef); | |
| 396 RetainPtr<CFStringRef> createCFString() const; | |
| 397 #endif | |
| 398 | |
| 399 #ifdef __OBJC__ | |
| 400 String(NSString*); | |
| 401 | |
| 402 // This conversion maps NULL to "", which loses the meaning of NULL, but we | |
| 403 // need this mapping because AppKit crashes when passed nil NSStrings. | |
| 404 operator NSString*() const { if (!m_impl) return @""; return *m_impl; } | |
| 405 #endif | |
| 406 | |
| 407 WTF_EXPORT_STRING_API static String make8BitFrom16BitSource(const UChar*, si
ze_t); | |
| 408 template<size_t inlineCapacity> | |
| 409 static String make8BitFrom16BitSource(const Vector<UChar, inlineCapacity>& b
uffer) | |
| 410 { | |
| 411 return make8BitFrom16BitSource(buffer.data(), buffer.size()); | |
| 412 } | |
| 413 | |
| 414 WTF_EXPORT_STRING_API static String make16BitFrom8BitSource(const LChar*, si
ze_t); | |
| 415 | |
| 416 // String::fromUTF8 will return a null string if | |
| 417 // the input data contains invalid UTF-8 sequences. | |
| 418 WTF_EXPORT_STRING_API static String fromUTF8(const LChar*, size_t); | |
| 419 WTF_EXPORT_STRING_API static String fromUTF8(const LChar*); | |
| 420 static String fromUTF8(const char* s, size_t length) { return fromUTF8(reint
erpret_cast<const LChar*>(s), length); }; | |
| 421 static String fromUTF8(const char* s) { return fromUTF8(reinterpret_cast<con
st LChar*>(s)); }; | |
| 422 static String fromUTF8(const CString&); | |
| 423 | |
| 424 // Tries to convert the passed in string to UTF-8, but will fall back to Lat
in-1 if the string is not valid UTF-8. | |
| 425 WTF_EXPORT_STRING_API static String fromUTF8WithLatin1Fallback(const LChar*,
size_t); | |
| 426 static String fromUTF8WithLatin1Fallback(const char* s, size_t length) { ret
urn fromUTF8WithLatin1Fallback(reinterpret_cast<const LChar*>(s), length); }; | |
| 427 | |
| 428 // Determines the writing direction using the Unicode Bidi Algorithm rules P
2 and P3. | |
| 429 WTF::Unicode::Direction defaultWritingDirection(bool* hasStrongDirectionalit
y = 0) const | |
| 430 { | |
| 431 if (m_impl) | |
| 432 return m_impl->defaultWritingDirection(hasStrongDirectionality); | |
| 433 if (hasStrongDirectionality) | |
| 434 *hasStrongDirectionality = false; | |
| 435 return WTF::Unicode::LeftToRight; | |
| 436 } | |
| 437 | |
| 438 bool containsOnlyASCII() const; | |
| 439 bool containsOnlyLatin1() const; | |
| 440 bool containsOnlyWhitespace() const { return !m_impl || m_impl->containsOnly
Whitespace(); } | |
| 441 | |
| 442 // Hash table deleted values, which are only constructed and never copied or
destroyed. | |
| 443 String(WTF::HashTableDeletedValueType) : m_impl(WTF::HashTableDeletedValue)
{ } | |
| 444 bool isHashTableDeletedValue() const { return m_impl.isHashTableDeletedValue
(); } | |
| 445 | |
| 446 #ifndef NDEBUG | |
| 447 WTF_EXPORT_STRING_API void show() const; | |
| 448 #endif | |
| 449 | |
| 450 // Workaround for a compiler bug. Use operator[] instead. | |
| 451 UChar characterAt(unsigned index) const | |
| 452 { | |
| 453 if (!m_impl || index >= m_impl->length()) | |
| 454 return 0; | |
| 455 return (*m_impl)[index]; | |
| 456 } | |
| 457 | |
| 458 private: | |
| 459 template <typename CharacterType> | |
| 460 void removeInternal(const CharacterType*, unsigned, int); | |
| 461 | |
| 462 RefPtr<StringImpl> m_impl; | |
| 463 }; | |
| 464 | |
| 465 inline bool operator==(const String& a, const String& b) { return equal(a.impl()
, b.impl()); } | |
| 466 inline bool operator==(const String& a, const LChar* b) { return equal(a.impl(),
b); } | |
| 467 inline bool operator==(const String& a, const char* b) { return equal(a.impl(),
reinterpret_cast<const LChar*>(b)); } | |
| 468 inline bool operator==(const LChar* a, const String& b) { return equal(a, b.impl
()); } | |
| 469 inline bool operator==(const char* a, const String& b) { return equal(reinterpre
t_cast<const LChar*>(a), b.impl()); } | |
| 470 template<size_t inlineCapacity> | |
| 471 inline bool operator==(const Vector<char, inlineCapacity>& a, const String& b) {
return equal(b.impl(), a.data(), a.size()); } | |
| 472 template<size_t inlineCapacity> | |
| 473 inline bool operator==(const String& a, const Vector<char, inlineCapacity>& b) {
return b == a; } | |
| 474 | |
| 475 | |
| 476 inline bool operator!=(const String& a, const String& b) { return !equal(a.impl(
), b.impl()); } | |
| 477 inline bool operator!=(const String& a, const LChar* b) { return !equal(a.impl()
, b); } | |
| 478 inline bool operator!=(const String& a, const char* b) { return !equal(a.impl(),
reinterpret_cast<const LChar*>(b)); } | |
| 479 inline bool operator!=(const LChar* a, const String& b) { return !equal(a, b.imp
l()); } | |
| 480 inline bool operator!=(const char* a, const String& b) { return !equal(reinterpr
et_cast<const LChar*>(a), b.impl()); } | |
| 481 template<size_t inlineCapacity> | |
| 482 inline bool operator!=(const Vector<char, inlineCapacity>& a, const String& b) {
return !(a == b); } | |
| 483 template<size_t inlineCapacity> | |
| 484 inline bool operator!=(const String& a, const Vector<char, inlineCapacity>& b) {
return b != a; } | |
| 485 | |
| 486 inline bool equalIgnoringCase(const String& a, const String& b) { return equalIg
noringCase(a.impl(), b.impl()); } | |
| 487 inline bool equalIgnoringCase(const String& a, const LChar* b) { return equalIgn
oringCase(a.impl(), b); } | |
| 488 inline bool equalIgnoringCase(const String& a, const char* b) { return equalIgno
ringCase(a.impl(), reinterpret_cast<const LChar*>(b)); } | |
| 489 inline bool equalIgnoringCase(const LChar* a, const String& b) { return equalIgn
oringCase(a, b.impl()); } | |
| 490 inline bool equalIgnoringCase(const char* a, const String& b) { return equalIgno
ringCase(reinterpret_cast<const LChar*>(a), b.impl()); } | |
| 491 | |
| 492 inline bool equalPossiblyIgnoringCase(const String& a, const String& b, bool ign
oreCase) | |
| 493 { | |
| 494 return ignoreCase ? equalIgnoringCase(a, b) : (a == b); | |
| 495 } | |
| 496 | |
| 497 inline bool equalIgnoringNullity(const String& a, const String& b) { return equa
lIgnoringNullity(a.impl(), b.impl()); } | |
| 498 | |
| 499 template<size_t inlineCapacity> | |
| 500 inline bool equalIgnoringNullity(const Vector<UChar, inlineCapacity>& a, const S
tring& b) { return equalIgnoringNullity(a, b.impl()); } | |
| 501 | |
| 502 inline bool operator!(const String& str) { return str.isNull(); } | |
| 503 | |
| 504 inline void swap(String& a, String& b) { a.swap(b); } | |
| 505 | |
| 506 // Definitions of string operations | |
| 507 | |
| 508 template<size_t inlineCapacity> | |
| 509 String::String(const Vector<UChar, inlineCapacity>& vector) | |
| 510 : m_impl(vector.size() ? StringImpl::create(vector.data(), vector.size()) :
StringImpl::empty()) | |
| 511 { | |
| 512 } | |
| 513 | |
| 514 template<> | |
| 515 inline const LChar* String::getCharacters<LChar>() const | |
| 516 { | |
| 517 ASSERT(is8Bit()); | |
| 518 return characters8(); | |
| 519 } | |
| 520 | |
| 521 template<> | |
| 522 inline const UChar* String::getCharacters<UChar>() const | |
| 523 { | |
| 524 ASSERT(!is8Bit()); | |
| 525 return characters16(); | |
| 526 } | |
| 527 | |
| 528 template<> | |
| 529 inline const LChar* String::getCharactersWithUpconvert<LChar>() const | |
| 530 { | |
| 531 ASSERT(is8Bit()); | |
| 532 return characters8(); | |
| 533 } | |
| 534 | |
| 535 template<> | |
| 536 inline const UChar* String::getCharactersWithUpconvert<UChar>() const | |
| 537 { | |
| 538 return characters(); | |
| 539 } | |
| 540 | |
| 541 inline bool String::containsOnlyLatin1() const | |
| 542 { | |
| 543 if (isEmpty()) | |
| 544 return true; | |
| 545 | |
| 546 if (is8Bit()) | |
| 547 return true; | |
| 548 | |
| 549 const UChar* characters = characters16(); | |
| 550 UChar ored = 0; | |
| 551 for (size_t i = 0; i < m_impl->length(); ++i) | |
| 552 ored |= characters[i]; | |
| 553 return !(ored & 0xFF00); | |
| 554 } | |
| 555 | |
| 556 | |
| 557 #ifdef __OBJC__ | |
| 558 // This is for situations in WebKit where the long standing behavior has been | |
| 559 // "nil if empty", so we try to maintain longstanding behavior for the sake of | |
| 560 // entrenched clients | |
| 561 inline NSString* nsStringNilIfEmpty(const String& str) { return str.isEmpty() ?
nil : (NSString*)str; } | |
| 562 #endif | |
| 563 | |
| 564 inline bool String::containsOnlyASCII() const | |
| 565 { | |
| 566 if (isEmpty()) | |
| 567 return true; | |
| 568 | |
| 569 if (is8Bit()) | |
| 570 return charactersAreAllASCII(characters8(), m_impl->length()); | |
| 571 | |
| 572 return charactersAreAllASCII(characters16(), m_impl->length()); | |
| 573 } | |
| 574 | |
| 575 WTF_EXPORT_STRING_API int codePointCompare(const String&, const String&); | |
| 576 | |
| 577 inline bool codePointCompareLessThan(const String& a, const String& b) | |
| 578 { | |
| 579 return codePointCompare(a.impl(), b.impl()) < 0; | |
| 580 } | |
| 581 | |
| 582 template<size_t inlineCapacity> | |
| 583 inline void append(Vector<UChar, inlineCapacity>& vector, const String& string) | |
| 584 { | |
| 585 vector.append(string.characters(), string.length()); | |
| 586 } | |
| 587 | |
| 588 template<typename CharacterType> | |
| 589 inline void appendNumber(Vector<CharacterType>& vector, unsigned char number) | |
| 590 { | |
| 591 int numberLength = number > 99 ? 3 : (number > 9 ? 2 : 1); | |
| 592 size_t vectorSize = vector.size(); | |
| 593 vector.grow(vectorSize + numberLength); | |
| 594 | |
| 595 switch (numberLength) { | |
| 596 case 3: | |
| 597 vector[vectorSize + 2] = number % 10 + '0'; | |
| 598 number /= 10; | |
| 599 | |
| 600 case 2: | |
| 601 vector[vectorSize + 1] = number % 10 + '0'; | |
| 602 number /= 10; | |
| 603 | |
| 604 case 1: | |
| 605 vector[vectorSize] = number % 10 + '0'; | |
| 606 } | |
| 607 } | |
| 608 | |
| 609 template<bool isSpecialCharacter(UChar), typename CharacterType> | |
| 610 inline bool isAllSpecialCharacters(const CharacterType* characters, size_t lengt
h) | |
| 611 { | |
| 612 for (size_t i = 0; i < length; ++i) { | |
| 613 if (!isSpecialCharacter(characters[i])) | |
| 614 return false; | |
| 615 } | |
| 616 return true; | |
| 617 } | |
| 618 | |
| 619 template<bool isSpecialCharacter(UChar)> | |
| 620 inline bool String::isAllSpecialCharacters() const | |
| 621 { | |
| 622 size_t len = length(); | |
| 623 | |
| 624 if (!len) | |
| 625 return true; | |
| 626 | |
| 627 if (is8Bit()) | |
| 628 return WTF::isAllSpecialCharacters<isSpecialCharacter, LChar>(characters
8(), len); | |
| 629 return WTF::isAllSpecialCharacters<isSpecialCharacter, UChar>(characters(),
len); | |
| 630 } | |
| 631 | |
| 632 // StringHash is the default hash for String | |
| 633 template<typename T> struct DefaultHash; | |
| 634 template<> struct DefaultHash<String> { | |
| 635 typedef StringHash Hash; | |
| 636 }; | |
| 637 | |
| 638 template <> struct VectorTraits<String> : SimpleClassVectorTraits { }; | |
| 639 | |
| 640 class ASCIILiteral { | |
| 641 public: | |
| 642 explicit ASCIILiteral(const char* characters) : m_characters(characters) { } | |
| 643 operator const char*() { return m_characters; } | |
| 644 | |
| 645 private: | |
| 646 const char* m_characters; | |
| 647 }; | |
| 648 | |
| 649 // Shared global empty string. | |
| 650 WTF_EXPORT_STRING_API const String& emptyString(); | |
| 651 | |
| 652 } | |
| 653 | |
| 654 using WTF::CString; | |
| 655 using WTF::KeepTrailingZeros; | |
| 656 using WTF::String; | |
| 657 using WTF::emptyString; | |
| 658 using WTF::append; | |
| 659 using WTF::appendNumber; | |
| 660 using WTF::charactersAreAllASCII; | |
| 661 using WTF::charactersToIntStrict; | |
| 662 using WTF::charactersToUIntStrict; | |
| 663 using WTF::charactersToInt64Strict; | |
| 664 using WTF::charactersToUInt64Strict; | |
| 665 using WTF::charactersToIntPtrStrict; | |
| 666 using WTF::charactersToInt; | |
| 667 using WTF::charactersToUInt; | |
| 668 using WTF::charactersToInt64; | |
| 669 using WTF::charactersToUInt64; | |
| 670 using WTF::charactersToIntPtr; | |
| 671 using WTF::charactersToDouble; | |
| 672 using WTF::charactersToFloat; | |
| 673 using WTF::equal; | |
| 674 using WTF::equalIgnoringCase; | |
| 675 using WTF::find; | |
| 676 using WTF::isAllSpecialCharacters; | |
| 677 using WTF::isSpaceOrNewline; | |
| 678 using WTF::reverseFind; | |
| 679 using WTF::ASCIILiteral; | |
| 680 | |
| 681 #include <wtf/text/AtomicString.h> | |
| 682 #endif | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 14238015:
Move Source/WTF/wtf to Source/wtf (Closed)
Base URL: svn://svn.chromium.org/blink/trunk