TextBreakIterator.h [plain text]
#ifndef TextBreakIterator_h
#define TextBreakIterator_h
#include <wtf/text/AtomicString.h>
#include <wtf/unicode/Unicode.h>
namespace WebCore {
class TextBreakIterator;
TextBreakIterator* cursorMovementIterator(const UChar*, int length);
TextBreakIterator* wordBreakIterator(const UChar*, int length);
TextBreakIterator* acquireLineBreakIterator(const UChar*, int length, const AtomicString& locale);
void releaseLineBreakIterator(TextBreakIterator*);
TextBreakIterator* sentenceBreakIterator(const UChar*, int length);
int textBreakFirst(TextBreakIterator*);
int textBreakLast(TextBreakIterator*);
int textBreakNext(TextBreakIterator*);
int textBreakPrevious(TextBreakIterator*);
int textBreakCurrent(TextBreakIterator*);
int textBreakPreceding(TextBreakIterator*, int);
int textBreakFollowing(TextBreakIterator*, int);
bool isTextBreak(TextBreakIterator*, int);
bool isWordTextBreak(TextBreakIterator*);
const int TextBreakDone = -1;
class LazyLineBreakIterator {
public:
LazyLineBreakIterator(const UChar* string = 0, int length = 0, const AtomicString& locale = AtomicString())
: m_string(string)
, m_length(length)
, m_locale(locale)
, m_iterator(0)
{
}
~LazyLineBreakIterator()
{
if (m_iterator)
releaseLineBreakIterator(m_iterator);
}
const UChar* string() const { return m_string; }
int length() const { return m_length; }
TextBreakIterator* get()
{
if (!m_iterator)
m_iterator = acquireLineBreakIterator(m_string, m_length, m_locale);
return m_iterator;
}
void reset(const UChar* string, int length, const AtomicString& locale)
{
if (m_iterator)
releaseLineBreakIterator(m_iterator);
m_string = string;
m_length = length;
m_locale = locale;
m_iterator = 0;
}
private:
const UChar* m_string;
int m_length;
AtomicString m_locale;
TextBreakIterator* m_iterator;
};
class NonSharedCharacterBreakIterator {
WTF_MAKE_NONCOPYABLE(NonSharedCharacterBreakIterator);
public:
NonSharedCharacterBreakIterator(const UChar*, int length);
~NonSharedCharacterBreakIterator();
operator TextBreakIterator*() const { return m_iterator; }
private:
TextBreakIterator* m_iterator;
};
}
#endif