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/*
This file is part of the KDE libraries
Copyright (C) 1999 Lars Knoll (knoll@mpi-hd.mpg.de)
Copyright (C) 2004 Apple Computer, Inc.
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.
*/
//----------------------------------------------------------------------------
//
// KDE HTML Widget -- String class
#ifndef KHTMLSTRING_H
#define KHTMLSTRING_H
#include "dom/dom_string.h"
#include <QtCore/QList>
#include <QtCore/QString>
#include <assert.h>
using namespace DOM;
namespace khtml
{
class DOMStringIt
{
public:
DOMStringIt()
{ s = 0, l = 0; lines = 0; }
DOMStringIt(QChar *str, uint len)
{ s = str, l = len; lines = 0; }
DOMStringIt(const QString &str)
{ s = str.unicode(); l = str.length(); lines = 0; }
DOMStringIt *operator++()
{
if(!pushedChar.isNull())
pushedChar=0;
else if(l > 0 ) {
if (*s == QLatin1Char('\n'))
lines++;
s++, l--;
}
return this;
}
public:
void push(const QChar& c) { /* assert(pushedChar.isNull());*/ pushedChar = c; }
const QChar& operator*() const { return pushedChar.isNull() ? *s : pushedChar; }
const QChar* operator->() const { return pushedChar.isNull() ? s : &pushedChar; }
bool escaped() const { return !pushedChar.isNull(); }
uint length() const { return l+(!pushedChar.isNull()); }
const QChar *current() const { return pushedChar.isNull() ? s : &pushedChar; }
int lineCount() const { return lines; }
protected:
QChar pushedChar;
const QChar *s;
int l;
int lines;
};
class TokenizerString;
class TokenizerSubstring
{
friend class TokenizerString;
public:
TokenizerSubstring() : m_length(0), m_current(0) {}
TokenizerSubstring(const QString &str) : m_string(str), m_length(str.length()), m_current(m_length == 0 ? 0 : str.unicode()) {}
TokenizerSubstring(const QChar *str, int length) : m_length(length), m_current(length == 0 ? 0 : str) {}
void clear() { m_length = 0; m_current = 0; }
void appendTo(QString &str) const {
if (m_string.unicode() == m_current) {
if (str.isEmpty())
str = m_string;
else
str.append(m_string);
} else {
str.insert(str.length(), m_current, m_length);
}
}
private:
QString m_string;
int m_length;
const QChar *m_current;
};
class TokenizerString
{
public:
TokenizerString() : m_currentChar(0), m_lines(0), m_composite(false) {}
TokenizerString(const QChar *str, int length) : m_currentString(str, length), m_currentChar(m_currentString.m_current), m_lines(0), m_composite(false) {}
TokenizerString(const QString &str) : m_currentString(str), m_currentChar(m_currentString.m_current), m_lines(0), m_composite(false) {}
TokenizerString(const TokenizerString &o) : m_pushedChar1(o.m_pushedChar1), m_pushedChar2(o.m_pushedChar2),
m_currentString(o.m_currentString), m_substrings(o.m_substrings),
m_lines(o.m_lines), m_composite(o.m_composite) {
m_currentChar = m_pushedChar1.isNull() ? m_currentString.m_current : &m_pushedChar1;
}
void clear();
void append(const TokenizerString &);
void prepend(const TokenizerString &);
void push(QChar c) {
if (m_pushedChar1.isNull()) {
m_pushedChar1 = c;
m_currentChar = m_pushedChar1.isNull() ? m_currentString.m_current : &m_pushedChar1;
} else {
assert(m_pushedChar2.isNull());
m_pushedChar2 = c;
}
}
bool isEmpty() const { return !current(); }
uint length() const;
void advance() {
if (!m_pushedChar1.isNull()) {
m_pushedChar1 = m_pushedChar2;
m_pushedChar2 = 0;
} else if (m_currentString.m_current) {
m_lines += *m_currentString.m_current++ == QLatin1Char('\n');
if (--m_currentString.m_length == 0)
advanceSubstring();
}
m_currentChar = m_pushedChar1.isNull() ? m_currentString.m_current: &m_pushedChar1;
}
uint count() const { return m_substrings.count(); }
bool escaped() const { return !m_pushedChar1.isNull(); }
int lineCount() const { return m_lines; }
void resetLineCount() { m_lines = 0; }
QString toString() const;
void operator++() { advance(); }
const QChar &operator*() const { return *current(); }
const QChar *operator->() const { return current(); }
private:
void append(const TokenizerSubstring &);
void prepend(const TokenizerSubstring &);
void advanceSubstring();
const QChar *current() const { return m_currentChar; }
QChar m_pushedChar1;
QChar m_pushedChar2;
TokenizerSubstring m_currentString;
const QChar *m_currentChar;
QList<TokenizerSubstring> m_substrings;
int m_lines;
bool m_composite;
};
class TokenizerQueue : public QList<TokenizerString>
{
public:
TokenizerQueue() {}
~TokenizerQueue() {}
void push( const TokenizerString &t ) { prepend(t); }
TokenizerString pop() {
if (isEmpty())
return TokenizerString();
TokenizerString t(first());
erase( begin() );
return t;
}
TokenizerString& top() { return first(); }
TokenizerString& bottom() { return last(); }
};
}
#endif
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