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.
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.
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.
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.
25 // This file would be called String.h, but that conflicts with <string.h>
26 // on systems without case-sensitive file systems.
28 #include "wtf/HashTableDeletedValueType.h"
29 #include "wtf/WTFExport.h"
30 #include "wtf/text/ASCIIFastPath.h"
31 #include "wtf/text/StringImpl.h"
32 #include "wtf/text/StringView.h"
35 #include <objc/objc.h>
43 // Declarations of string operations
45 WTF_EXPORT int charactersToIntStrict(const LChar*, size_t, bool* ok = 0, int base = 10);
46 WTF_EXPORT int charactersToIntStrict(const UChar*, size_t, bool* ok = 0, int base = 10);
47 WTF_EXPORT unsigned charactersToUIntStrict(const LChar*, size_t, bool* ok = 0, int base = 10);
48 WTF_EXPORT unsigned charactersToUIntStrict(const UChar*, size_t, bool* ok = 0, int base = 10);
49 WTF_EXPORT int64_t charactersToInt64Strict(const LChar*, size_t, bool* ok = 0, int base = 10);
50 WTF_EXPORT int64_t charactersToInt64Strict(const UChar*, size_t, bool* ok = 0, int base = 10);
51 WTF_EXPORT uint64_t charactersToUInt64Strict(const LChar*, size_t, bool* ok = 0, int base = 10);
52 WTF_EXPORT uint64_t charactersToUInt64Strict(const UChar*, size_t, bool* ok = 0, int base = 10);
53 WTF_EXPORT intptr_t charactersToIntPtrStrict(const LChar*, size_t, bool* ok = 0, int base = 10);
54 WTF_EXPORT intptr_t charactersToIntPtrStrict(const UChar*, size_t, bool* ok = 0, int base = 10);
56 WTF_EXPORT int charactersToInt(const LChar*, size_t, bool* ok = 0); // ignores trailing garbage
57 WTF_EXPORT int charactersToInt(const UChar*, size_t, bool* ok = 0); // ignores trailing garbage
58 WTF_EXPORT unsigned charactersToUInt(const LChar*, size_t, bool* ok = 0); // ignores trailing garbage
59 WTF_EXPORT unsigned charactersToUInt(const UChar*, size_t, bool* ok = 0); // ignores trailing garbage
60 WTF_EXPORT int64_t charactersToInt64(const LChar*, size_t, bool* ok = 0); // ignores trailing garbage
61 WTF_EXPORT int64_t charactersToInt64(const UChar*, size_t, bool* ok = 0); // ignores trailing garbage
62 WTF_EXPORT uint64_t charactersToUInt64(const LChar*, size_t, bool* ok = 0); // ignores trailing garbage
63 WTF_EXPORT uint64_t charactersToUInt64(const UChar*, size_t, bool* ok = 0); // ignores trailing garbage
64 WTF_EXPORT intptr_t charactersToIntPtr(const LChar*, size_t, bool* ok = 0); // ignores trailing garbage
65 WTF_EXPORT intptr_t charactersToIntPtr(const UChar*, size_t, bool* ok = 0); // ignores trailing garbage
67 // FIXME: Like the strict functions above, these give false for "ok" when there is trailing garbage.
68 // Like the non-strict functions above, these return the value when there is trailing garbage.
69 // It would be better if these were more consistent with the above functions instead.
70 WTF_EXPORT double charactersToDouble(const LChar*, size_t, bool* ok = 0);
71 WTF_EXPORT double charactersToDouble(const UChar*, size_t, bool* ok = 0);
72 WTF_EXPORT float charactersToFloat(const LChar*, size_t, bool* ok = 0);
73 WTF_EXPORT float charactersToFloat(const UChar*, size_t, bool* ok = 0);
74 WTF_EXPORT float charactersToFloat(const LChar*, size_t, size_t& parsedLength);
75 WTF_EXPORT float charactersToFloat(const UChar*, size_t, size_t& parsedLength);
77 enum TrailingZerosTruncatingPolicy {
82 enum UTF8ConversionMode {
83 LenientUTF8Conversion,
85 StrictUTF8ConversionReplacingUnpairedSurrogatesWithFFFD
88 template<bool isSpecialCharacter(UChar), typename CharacterType>
89 bool isAllSpecialCharacters(const CharacterType*, size_t);
91 // You can find documentation about this class in this doc:
92 // https://docs.google.com/document/d/1kOCUlJdh2WJMJGDf-WoEQhmnjKLaOYRbiHz5TiGJl14/edit?usp=sharing
93 class WTF_EXPORT String {
95 // Construct a null string, distinguishable from an empty string.
98 // Construct a string with UTF-16 data.
99 String(const UChar* characters, unsigned length);
101 // Construct a string by copying the contents of a vector.
102 // This method will never create a null string. Vectors with size() == 0
103 // will return the empty string.
104 // NOTE: This is different from String(vector.data(), vector.size())
105 // which will sometimes return a null string when vector.data() is null
106 // which can only occur for vectors without inline capacity.
107 // See: https://bugs.webkit.org/show_bug.cgi?id=109792
108 template<size_t inlineCapacity>
109 explicit String(const Vector<UChar, inlineCapacity>&);
111 // Construct a string with UTF-16 data, from a null-terminated source.
112 String(const UChar*);
114 // Construct a string with latin1 data.
115 String(const LChar* characters, unsigned length);
116 String(const char* characters, unsigned length);
118 // Construct a string with latin1 data, from a null-terminated source.
119 String(const LChar* characters);
120 String(const char* characters);
122 // Construct a string referencing an existing StringImpl.
123 String(StringImpl* impl) : m_impl(impl) { }
124 String(PassRefPtr<StringImpl> impl) : m_impl(impl) { }
126 #if COMPILER_SUPPORTS(CXX_RVALUE_REFERENCES)
127 // We have to declare the copy constructor and copy assignment operator as well, otherwise
128 // they'll be implicitly deleted by adding the move constructor and move assignment operator.
129 String(const String& other) : m_impl(other.m_impl) { }
130 String(String&& other) : m_impl(other.m_impl.release()) { }
131 String& operator=(const String& other) { m_impl = other.m_impl; return *this; }
132 String& operator=(String&& other) { m_impl = other.m_impl.release(); return *this; }
135 // Inline the destructor.
136 ALWAYS_INLINE ~String() { }
138 void swap(String& o) { m_impl.swap(o.m_impl); }
140 template<typename CharType>
141 static String adopt(StringBuffer<CharType>& buffer)
143 if (!buffer.length())
144 return StringImpl::empty();
145 return String(buffer.release());
148 bool isNull() const { return !m_impl; }
149 bool isEmpty() const { return !m_impl || !m_impl->length(); }
151 StringImpl* impl() const { return m_impl.get(); }
152 PassRefPtr<StringImpl> releaseImpl() { return m_impl.release(); }
154 unsigned length() const
158 return m_impl->length();
161 const LChar* characters8() const
165 ASSERT(m_impl->is8Bit());
166 return m_impl->characters8();
169 const UChar* characters16() const
173 ASSERT(!m_impl->is8Bit());
174 return m_impl->characters16();
177 // Return characters8() or characters16() depending on CharacterType.
178 template <typename CharacterType>
179 inline const CharacterType* getCharacters() const;
181 bool is8Bit() const { return m_impl->is8Bit(); }
183 unsigned sizeInBytes() const
187 return m_impl->length() * (is8Bit() ? sizeof(LChar) : sizeof(UChar));
190 CString ascii() const;
191 CString latin1() const;
192 CString utf8(UTF8ConversionMode = LenientUTF8Conversion) const;
194 UChar operator[](unsigned index) const
196 if (!m_impl || index >= m_impl->length())
198 return (*m_impl)[index];
201 static String number(int);
202 static String number(unsigned);
203 static String number(long);
204 static String number(unsigned long);
205 static String number(long long);
206 static String number(unsigned long long);
208 static String number(double, unsigned precision = 6, TrailingZerosTruncatingPolicy = TruncateTrailingZeros);
210 // Number to String conversion following the ECMAScript definition.
211 static String numberToStringECMAScript(double);
212 static String numberToStringFixedWidth(double, unsigned decimalPlaces);
214 // Find a single character or string, also with match function & latin1 forms.
215 size_t find(UChar c, unsigned start = 0) const
216 { return m_impl ? m_impl->find(c, start) : kNotFound; }
218 size_t find(const String& str) const
219 { return m_impl ? m_impl->find(str.impl()) : kNotFound; }
220 size_t find(const String& str, unsigned start) const
221 { return m_impl ? m_impl->find(str.impl(), start) : kNotFound; }
223 size_t find(CharacterMatchFunctionPtr matchFunction, unsigned start = 0) const
224 { return m_impl ? m_impl->find(matchFunction, start) : kNotFound; }
225 size_t find(const LChar* str, unsigned start = 0) const
226 { return m_impl ? m_impl->find(str, start) : kNotFound; }
228 size_t findNextLineStart(unsigned start = 0) const
229 { return m_impl ? m_impl->findNextLineStart(start) : kNotFound; }
231 // Find the last instance of a single character or string.
232 size_t reverseFind(UChar c, unsigned start = UINT_MAX) const
233 { return m_impl ? m_impl->reverseFind(c, start) : kNotFound; }
234 size_t reverseFind(const String& str, unsigned start = UINT_MAX) const
235 { return m_impl ? m_impl->reverseFind(str.impl(), start) : kNotFound; }
237 // Case insensitive string matching.
238 size_t findIgnoringCase(const LChar* str, unsigned start = 0) const
239 { return m_impl ? m_impl->findIgnoringCase(str, start) : kNotFound; }
240 size_t findIgnoringCase(const String& str, unsigned start = 0) const
241 { return m_impl ? m_impl->findIgnoringCase(str.impl(), start) : kNotFound; }
242 size_t reverseFindIgnoringCase(const String& str, unsigned start = UINT_MAX) const
243 { return m_impl ? m_impl->reverseFindIgnoringCase(str.impl(), start) : kNotFound; }
245 // Wrappers for find & reverseFind adding dynamic sensitivity check.
246 size_t find(const LChar* str, unsigned start, bool caseSensitive) const
247 { return caseSensitive ? find(str, start) : findIgnoringCase(str, start); }
248 size_t find(const String& str, unsigned start, bool caseSensitive) const
249 { return caseSensitive ? find(str, start) : findIgnoringCase(str, start); }
250 size_t reverseFind(const String& str, unsigned start, bool caseSensitive) const
251 { return caseSensitive ? reverseFind(str, start) : reverseFindIgnoringCase(str, start); }
253 Vector<UChar> charactersWithNullTermination() const;
254 unsigned copyTo(UChar* buffer, unsigned pos, unsigned maxLength) const;
256 template<size_t inlineCapacity>
257 void appendTo(Vector<UChar, inlineCapacity>&, unsigned pos = 0, unsigned len = UINT_MAX) const;
259 template<typename BufferType>
260 void appendTo(BufferType&, unsigned pos = 0, unsigned len = UINT_MAX) const;
262 template<size_t inlineCapacity>
263 void prependTo(Vector<UChar, inlineCapacity>&, unsigned pos = 0, unsigned len = UINT_MAX) const;
265 UChar32 characterStartingAt(unsigned) const;
267 bool contains(UChar c) const { return find(c) != kNotFound; }
268 bool contains(const LChar* str, bool caseSensitive = true) const { return find(str, 0, caseSensitive) != kNotFound; }
269 bool contains(const String& str, bool caseSensitive = true) const { return find(str, 0, caseSensitive) != kNotFound; }
271 bool startsWith(const String& s, bool caseSensitive = true) const
272 { return m_impl ? m_impl->startsWith(s.impl(), caseSensitive) : s.isEmpty(); }
273 bool startsWith(UChar character) const
274 { return m_impl ? m_impl->startsWith(character) : false; }
275 template<unsigned matchLength>
276 bool startsWith(const char (&prefix)[matchLength], bool caseSensitive = true) const
277 { return m_impl ? m_impl->startsWith<matchLength>(prefix, caseSensitive) : !matchLength; }
279 bool endsWith(const String& s, bool caseSensitive = true) const
280 { return m_impl ? m_impl->endsWith(s.impl(), caseSensitive) : s.isEmpty(); }
281 bool endsWith(UChar character) const
282 { return m_impl ? m_impl->endsWith(character) : false; }
283 template<unsigned matchLength>
284 bool endsWith(const char (&prefix)[matchLength], bool caseSensitive = true) const
285 { return m_impl ? m_impl->endsWith<matchLength>(prefix, caseSensitive) : !matchLength; }
287 void append(const String&);
289 void append(char c) { append(static_cast<LChar>(c)); };
291 void append(const LChar*, unsigned length);
292 void append(const UChar*, unsigned length);
293 void insert(const String&, unsigned pos);
294 void insert(const LChar*, unsigned length, unsigned pos);
295 void insert(const UChar*, unsigned length, unsigned pos);
297 String& replace(UChar a, UChar b) { if (m_impl) m_impl = m_impl->replace(a, b); return *this; }
298 String& replace(UChar a, const String& b) { if (m_impl) m_impl = m_impl->replace(a, b.impl()); return *this; }
299 String& replace(const String& a, const String& b) { if (m_impl) m_impl = m_impl->replace(a.impl(), b.impl()); return *this; }
300 String& replace(unsigned index, unsigned len, const String& b) { if (m_impl) m_impl = m_impl->replace(index, len, b.impl()); return *this; }
302 template<unsigned charactersCount>
303 ALWAYS_INLINE String& replaceWithLiteral(UChar a, const char (&characters)[charactersCount])
306 m_impl = m_impl->replace(a, characters, charactersCount - 1);
311 void fill(UChar c) { if (m_impl) m_impl = m_impl->fill(c); }
315 void truncate(unsigned len);
316 void remove(unsigned pos, int len = 1);
318 String substring(unsigned pos, unsigned len = UINT_MAX) const;
319 String left(unsigned len) const { return substring(0, len); }
320 String right(unsigned len) const { return substring(length() - len, len); }
322 StringView createView() const { return StringView(impl()); }
323 StringView createView(unsigned offset, unsigned length) const { return StringView(impl(), offset, length); }
325 // Returns a lowercase/uppercase version of the string
326 String lower() const;
327 String upper() const;
329 String lower(const AtomicString& localeIdentifier) const;
330 String upper(const AtomicString& localeIdentifier) const;
332 String stripWhiteSpace() const;
333 String stripWhiteSpace(IsWhiteSpaceFunctionPtr) const;
334 String simplifyWhiteSpace(StripBehavior stripBehavior = StripExtraWhiteSpace) const;
335 String simplifyWhiteSpace(IsWhiteSpaceFunctionPtr, StripBehavior stripBehavior = StripExtraWhiteSpace) const;
337 String removeCharacters(CharacterMatchFunctionPtr) const;
338 template<bool isSpecialCharacter(UChar)> bool isAllSpecialCharacters() const;
340 // Return the string with case folded for case insensitive comparison.
341 String foldCase() const;
343 static String format(const char *, ...) WTF_ATTRIBUTE_PRINTF(1, 2);
345 // Returns an uninitialized string. The characters needs to be written
346 // into the buffer returned in data before the returned string is used.
347 // Failure to do this will have unpredictable results.
348 static String createUninitialized(unsigned length, UChar*& data) { return StringImpl::createUninitialized(length, data); }
349 static String createUninitialized(unsigned length, LChar*& data) { return StringImpl::createUninitialized(length, data); }
351 void split(const String& separator, bool allowEmptyEntries, Vector<String>& result) const;
352 void split(const String& separator, Vector<String>& result) const
354 split(separator, false, result);
356 void split(UChar separator, bool allowEmptyEntries, Vector<String>& result) const;
357 void split(UChar separator, Vector<String>& result) const
359 split(separator, false, result);
362 int toIntStrict(bool* ok = 0, int base = 10) const;
363 unsigned toUIntStrict(bool* ok = 0, int base = 10) const;
364 int64_t toInt64Strict(bool* ok = 0, int base = 10) const;
365 uint64_t toUInt64Strict(bool* ok = 0, int base = 10) const;
366 intptr_t toIntPtrStrict(bool* ok = 0, int base = 10) const;
368 int toInt(bool* ok = 0) const;
369 unsigned toUInt(bool* ok = 0) const;
370 int64_t toInt64(bool* ok = 0) const;
371 uint64_t toUInt64(bool* ok = 0) const;
372 intptr_t toIntPtr(bool* ok = 0) const;
374 // FIXME: Like the strict functions above, these give false for "ok" when there is trailing garbage.
375 // Like the non-strict functions above, these return the value when there is trailing garbage.
376 // It would be better if these were more consistent with the above functions instead.
377 double toDouble(bool* ok = 0) const;
378 float toFloat(bool* ok = 0) const;
380 bool percentage(int& percentage) const;
382 String isolatedCopy() const;
383 bool isSafeToSendToAnotherThread() const;
387 RetainPtr<CFStringRef> createCFString() const;
393 // This conversion maps NULL to "", which loses the meaning of NULL, but we
394 // need this mapping because AppKit crashes when passed nil NSStrings.
395 operator NSString*() const { if (!m_impl) return @""; return *m_impl; }
398 static String make8BitFrom16BitSource(const UChar*, size_t);
399 template<size_t inlineCapacity>
400 static String make8BitFrom16BitSource(const Vector<UChar, inlineCapacity>& buffer)
402 return make8BitFrom16BitSource(buffer.data(), buffer.size());
405 static String make16BitFrom8BitSource(const LChar*, size_t);
407 // String::fromUTF8 will return a null string if
408 // the input data contains invalid UTF-8 sequences.
409 static String fromUTF8(const LChar*, size_t);
410 static String fromUTF8(const LChar*);
411 static String fromUTF8(const char* s, size_t length) { return fromUTF8(reinterpret_cast<const LChar*>(s), length); };
412 static String fromUTF8(const char* s) { return fromUTF8(reinterpret_cast<const LChar*>(s)); };
413 static String fromUTF8(const CString&);
415 // 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.
416 static String fromUTF8WithLatin1Fallback(const LChar*, size_t);
417 static String fromUTF8WithLatin1Fallback(const char* s, size_t length) { return fromUTF8WithLatin1Fallback(reinterpret_cast<const LChar*>(s), length); };
419 bool containsOnlyASCII() const;
420 bool containsOnlyLatin1() const;
421 bool containsOnlyWhitespace() const { return !m_impl || m_impl->containsOnlyWhitespace(); }
423 // Hash table deleted values, which are only constructed and never copied or destroyed.
424 String(WTF::HashTableDeletedValueType) : m_impl(WTF::HashTableDeletedValue) { }
425 bool isHashTableDeletedValue() const { return m_impl.isHashTableDeletedValue(); }
431 // Workaround for a compiler bug. Use operator[] instead.
432 UChar characterAt(unsigned index) const
434 if (!m_impl || index >= m_impl->length())
436 return (*m_impl)[index];
440 typedef struct ImplicitConversionFromWTFStringToBoolDisallowed* (String::*UnspecifiedBoolType);
441 operator UnspecifiedBoolType() const;
443 template <typename CharacterType>
444 void removeInternal(const CharacterType*, unsigned, int);
446 template <typename CharacterType>
447 void appendInternal(CharacterType);
449 RefPtr<StringImpl> m_impl;
452 inline bool operator==(const String& a, const String& b) { return equal(a.impl(), b.impl()); }
453 inline bool operator==(const String& a, const LChar* b) { return equal(a.impl(), b); }
454 inline bool operator==(const String& a, const char* b) { return equal(a.impl(), reinterpret_cast<const LChar*>(b)); }
455 inline bool operator==(const LChar* a, const String& b) { return equal(a, b.impl()); }
456 inline bool operator==(const char* a, const String& b) { return equal(reinterpret_cast<const LChar*>(a), b.impl()); }
457 template<size_t inlineCapacity>
458 inline bool operator==(const Vector<char, inlineCapacity>& a, const String& b) { return equal(b.impl(), a.data(), a.size()); }
459 template<size_t inlineCapacity>
460 inline bool operator==(const String& a, const Vector<char, inlineCapacity>& b) { return b == a; }
463 inline bool operator!=(const String& a, const String& b) { return !equal(a.impl(), b.impl()); }
464 inline bool operator!=(const String& a, const LChar* b) { return !equal(a.impl(), b); }
465 inline bool operator!=(const String& a, const char* b) { return !equal(a.impl(), reinterpret_cast<const LChar*>(b)); }
466 inline bool operator!=(const LChar* a, const String& b) { return !equal(a, b.impl()); }
467 inline bool operator!=(const char* a, const String& b) { return !equal(reinterpret_cast<const LChar*>(a), b.impl()); }
468 template<size_t inlineCapacity>
469 inline bool operator!=(const Vector<char, inlineCapacity>& a, const String& b) { return !(a == b); }
470 template<size_t inlineCapacity>
471 inline bool operator!=(const String& a, const Vector<char, inlineCapacity>& b) { return b != a; }
473 inline bool equalIgnoringCase(const String& a, const String& b) { return equalIgnoringCase(a.impl(), b.impl()); }
474 inline bool equalIgnoringCase(const String& a, const LChar* b) { return equalIgnoringCase(a.impl(), b); }
475 inline bool equalIgnoringCase(const String& a, const char* b) { return equalIgnoringCase(a.impl(), reinterpret_cast<const LChar*>(b)); }
476 inline bool equalIgnoringCase(const LChar* a, const String& b) { return equalIgnoringCase(a, b.impl()); }
477 inline bool equalIgnoringCase(const char* a, const String& b) { return equalIgnoringCase(reinterpret_cast<const LChar*>(a), b.impl()); }
479 inline bool equalPossiblyIgnoringCase(const String& a, const String& b, bool ignoreCase)
481 return ignoreCase ? equalIgnoringCase(a, b) : (a == b);
484 inline bool equalIgnoringNullity(const String& a, const String& b) { return equalIgnoringNullity(a.impl(), b.impl()); }
486 template<size_t inlineCapacity>
487 inline bool equalIgnoringNullity(const Vector<UChar, inlineCapacity>& a, const String& b) { return equalIgnoringNullity(a, b.impl()); }
489 inline bool operator!(const String& str) { return str.isNull(); }
491 inline void swap(String& a, String& b) { a.swap(b); }
493 // Definitions of string operations
495 template<size_t inlineCapacity>
496 String::String(const Vector<UChar, inlineCapacity>& vector)
497 : m_impl(vector.size() ? StringImpl::create(vector.data(), vector.size()) : StringImpl::empty())
502 inline const LChar* String::getCharacters<LChar>() const
505 return characters8();
509 inline const UChar* String::getCharacters<UChar>() const
512 return characters16();
515 inline bool String::containsOnlyLatin1() const
523 const UChar* characters = characters16();
525 for (size_t i = 0; i < m_impl->length(); ++i)
526 ored |= characters[i];
527 return !(ored & 0xFF00);
532 // This is for situations in WebKit where the long standing behavior has been
533 // "nil if empty", so we try to maintain longstanding behavior for the sake of
534 // entrenched clients
535 inline NSString* nsStringNilIfEmpty(const String& str) { return str.isEmpty() ? nil : (NSString*)str; }
538 inline bool String::containsOnlyASCII() const
544 return charactersAreAllASCII(characters8(), m_impl->length());
546 return charactersAreAllASCII(characters16(), m_impl->length());
549 WTF_EXPORT int codePointCompare(const String&, const String&);
551 inline bool codePointCompareLessThan(const String& a, const String& b)
553 return codePointCompare(a.impl(), b.impl()) < 0;
556 template<size_t inlineCapacity>
557 inline void append(Vector<UChar, inlineCapacity>& vector, const String& string)
559 unsigned length = string.length();
562 if (string.is8Bit()) {
563 const LChar* characters8 = string.characters8();
564 vector.reserveCapacity(vector.size() + length);
565 for (size_t i = 0; i < length; ++i)
566 vector.uncheckedAppend(characters8[i]);
568 vector.append(string.characters16(), length);
572 template<typename CharacterType>
573 inline void appendNumber(Vector<CharacterType>& vector, unsigned char number)
575 int numberLength = number > 99 ? 3 : (number > 9 ? 2 : 1);
576 size_t vectorSize = vector.size();
577 vector.grow(vectorSize + numberLength);
579 switch (numberLength) {
581 vector[vectorSize + 2] = number % 10 + '0';
585 vector[vectorSize + 1] = number % 10 + '0';
589 vector[vectorSize] = number % 10 + '0';
593 template<bool isSpecialCharacter(UChar), typename CharacterType>
594 inline bool isAllSpecialCharacters(const CharacterType* characters, size_t length)
596 for (size_t i = 0; i < length; ++i) {
597 if (!isSpecialCharacter(characters[i]))
603 template<bool isSpecialCharacter(UChar)>
604 inline bool String::isAllSpecialCharacters() const
606 size_t len = length();
612 return WTF::isAllSpecialCharacters<isSpecialCharacter, LChar>(characters8(), len);
613 return WTF::isAllSpecialCharacters<isSpecialCharacter, UChar>(characters16(), len);
616 template<size_t inlineCapacity>
617 inline void String::appendTo(Vector<UChar, inlineCapacity>& result, unsigned pos, unsigned len) const
619 unsigned numberOfCharactersToCopy = std::min(len, length() - pos);
620 if (!numberOfCharactersToCopy)
622 result.reserveCapacity(result.size() + numberOfCharactersToCopy);
624 const LChar* characters8 = m_impl->characters8();
625 for (size_t i = 0; i < numberOfCharactersToCopy; ++i)
626 result.uncheckedAppend(characters8[pos + i]);
628 const UChar* characters16 = m_impl->characters16();
629 result.append(characters16 + pos, numberOfCharactersToCopy);
633 template<typename BufferType>
634 inline void String::appendTo(BufferType& result, unsigned pos, unsigned len) const
636 unsigned numberOfCharactersToCopy = std::min(len, length() - pos);
637 if (!numberOfCharactersToCopy)
640 result.append(m_impl->characters8() + pos, numberOfCharactersToCopy);
642 result.append(m_impl->characters16() + pos, numberOfCharactersToCopy);
645 template<size_t inlineCapacity>
646 inline void String::prependTo(Vector<UChar, inlineCapacity>& result, unsigned pos, unsigned len) const
648 unsigned numberOfCharactersToCopy = std::min(len, length() - pos);
649 if (!numberOfCharactersToCopy)
652 size_t oldSize = result.size();
653 result.resize(oldSize + numberOfCharactersToCopy);
654 memmove(result.data() + numberOfCharactersToCopy, result.data(), oldSize * sizeof(UChar));
655 StringImpl::copyChars(result.data(), m_impl->characters8() + pos, numberOfCharactersToCopy);
657 result.prepend(m_impl->characters16() + pos, numberOfCharactersToCopy);
661 // StringHash is the default hash for String
662 template<typename T> struct DefaultHash;
663 template<> struct DefaultHash<String> {
664 typedef StringHash Hash;
667 template <> struct VectorTraits<String> : SimpleClassVectorTraits<String> {
668 static const bool canCompareWithMemcmp = false;
671 // Shared global empty string.
672 WTF_EXPORT const String& emptyString();
677 using WTF::KeepTrailingZeros;
678 using WTF::StrictUTF8Conversion;
679 using WTF::StrictUTF8ConversionReplacingUnpairedSurrogatesWithFFFD;
681 using WTF::emptyString;
683 using WTF::appendNumber;
684 using WTF::charactersAreAllASCII;
685 using WTF::charactersToIntStrict;
686 using WTF::charactersToUIntStrict;
687 using WTF::charactersToInt64Strict;
688 using WTF::charactersToUInt64Strict;
689 using WTF::charactersToIntPtrStrict;
690 using WTF::charactersToInt;
691 using WTF::charactersToUInt;
692 using WTF::charactersToInt64;
693 using WTF::charactersToUInt64;
694 using WTF::charactersToIntPtr;
695 using WTF::charactersToDouble;
696 using WTF::charactersToFloat;
698 using WTF::equalIgnoringCase;
700 using WTF::isAllSpecialCharacters;
701 using WTF::isSpaceOrNewline;
702 using WTF::reverseFind;
704 #include "wtf/text/AtomicString.h"