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/*
* Copyright (C) 2007 David Smith (catfish.man@gmail.com)
* Copyright (C) 2007, 2008, 2011, 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "core/dom/SpaceSplitString.h"
#include "core/html/parser/HTMLParserIdioms.h"
#include "wtf/ASCIICType.h"
#include "wtf/HashMap.h"
#include "wtf/text/AtomicStringHash.h"
using namespace WTF;
namespace WebCore {
template <typename CharacterType>
static inline bool hasNonASCIIOrUpper(const CharacterType* characters, unsigned length)
{
bool hasUpper = false;
CharacterType ored = 0;
for (unsigned i = 0; i < length; i++) {
CharacterType c = characters[i];
hasUpper |= isASCIIUpper(c);
ored |= c;
}
return hasUpper || (ored & ~0x7F);
}
static inline bool hasNonASCIIOrUpper(const String& string)
{
unsigned length = string.length();
if (string.is8Bit())
return hasNonASCIIOrUpper(string.characters8(), length);
return hasNonASCIIOrUpper(string.characters16(), length);
}
template <typename CharacterType>
inline void SpaceSplitStringData::createVector(const CharacterType* characters, unsigned length)
{
unsigned start = 0;
while (true) {
while (start < length && isHTMLSpace<CharacterType>(characters[start]))
++start;
if (start >= length)
break;
unsigned end = start + 1;
while (end < length && isNotHTMLSpace<CharacterType>(characters[end]))
++end;
m_vector.append(AtomicString(characters + start, end - start));
start = end + 1;
}
}
void SpaceSplitStringData::createVector(const String& string)
{
unsigned length = string.length();
if (string.is8Bit()) {
createVector(string.characters8(), length);
return;
}
createVector(string.characters16(), length);
}
bool SpaceSplitStringData::containsAll(SpaceSplitStringData& other)
{
if (this == &other)
return true;
size_t thisSize = m_vector.size();
size_t otherSize = other.m_vector.size();
for (size_t i = 0; i < otherSize; ++i) {
const AtomicString& name = other.m_vector[i];
size_t j;
for (j = 0; j < thisSize; ++j) {
if (m_vector[j] == name)
break;
}
if (j == thisSize)
return false;
}
return true;
}
void SpaceSplitStringData::add(const AtomicString& string)
{
ASSERT(hasOneRef());
ASSERT(!contains(string));
m_vector.append(string);
}
void SpaceSplitStringData::remove(unsigned index)
{
ASSERT(hasOneRef());
m_vector.remove(index);
}
void SpaceSplitString::add(const AtomicString& string)
{
// FIXME: add() does not allow duplicates but createVector() does.
if (contains(string))
return;
ensureUnique();
if (m_data)
m_data->add(string);
}
bool SpaceSplitString::remove(const AtomicString& string)
{
if (!m_data)
return false;
unsigned i = 0;
bool changed = false;
while (i < m_data->size()) {
if ((*m_data)[i] == string) {
if (!changed)
ensureUnique();
m_data->remove(i);
changed = true;
continue;
}
++i;
}
return changed;
}
typedef HashMap<AtomicString, SpaceSplitStringData*> SpaceSplitStringDataMap;
static SpaceSplitStringDataMap& sharedDataMap()
{
DEFINE_STATIC_LOCAL(SpaceSplitStringDataMap, map, ());
return map;
}
void SpaceSplitString::set(const AtomicString& inputString, bool shouldFoldCase)
{
if (inputString.isNull()) {
clear();
return;
}
String string(inputString.string());
if (shouldFoldCase && hasNonASCIIOrUpper(string))
string = string.foldCase();
m_data = SpaceSplitStringData::create(string);
}
SpaceSplitStringData::~SpaceSplitStringData()
{
if (!m_keyString.isNull())
sharedDataMap().remove(m_keyString);
}
PassRefPtr<SpaceSplitStringData> SpaceSplitStringData::create(const AtomicString& string)
{
SpaceSplitStringData*& data = sharedDataMap().add(string, 0).iterator->value;
if (!data) {
data = new SpaceSplitStringData(string);
return adoptRef(data);
}
return data;
}
PassRefPtr<SpaceSplitStringData> SpaceSplitStringData::createUnique(const SpaceSplitStringData& other)
{
return adoptRef(new SpaceSplitStringData(other));
}
SpaceSplitStringData::SpaceSplitStringData(const AtomicString& string)
: m_keyString(string)
{
ASSERT(!string.isNull());
createVector(string);
}
SpaceSplitStringData::SpaceSplitStringData(const SpaceSplitStringData& other)
: RefCounted<SpaceSplitStringData>()
, m_vector(other.m_vector)
{
// Note that we don't copy m_keyString to indicate to the destructor that there's nothing
// to be removed from the sharedDataMap().
}
} // namespace WebCore
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