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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
/*
openedlist.cpp
*/
#include <qregexp.h>
#include "atom.h"
#include "openedlist.h"
QT_BEGIN_NAMESPACE
static const char roman[] = "m\2d\5c\2l\5x\2v\5i";
OpenedList::OpenedList( Style style )
: sty( style ), ini( 1 ), nex( 0 )
{
}
OpenedList::OpenedList( const Location& location, const QString& hint )
: sty( Bullet ), ini( 1 )
{
QRegExp hintSyntax( "(\\W*)([0-9]+|[A-Z]+|[a-z]+)(\\W*)" );
if ( hintSyntax.exactMatch(hint) ) {
bool ok;
int asNumeric = hint.toInt( &ok );
int asRoman = fromRoman( hintSyntax.cap(2) );
int asAlpha = fromAlpha( hintSyntax.cap(2) );
if ( ok ) {
sty = Numeric;
ini = asNumeric;
} else if ( asRoman > 0 && asRoman != 100 && asRoman != 500 ) {
sty = ( hint == hint.toLower() ) ? LowerRoman : UpperRoman;
ini = asRoman;
} else {
sty = ( hint == hint.toLower() ) ? LowerAlpha : UpperAlpha;
ini = asAlpha;
}
pref = hintSyntax.cap( 1 );
suff = hintSyntax.cap( 3 );
} else if ( !hint.isEmpty() ) {
location.warning( tr("Unrecognized list style '%1'").arg(hint) );
}
nex = ini - 1;
}
QString OpenedList::styleString() const
{
switch ( style() ) {
case Bullet:
default:
return ATOM_LIST_BULLET;
case Tag:
return ATOM_LIST_TAG;
case Value:
return ATOM_LIST_VALUE;
case Numeric:
return ATOM_LIST_NUMERIC;
case UpperAlpha:
return ATOM_LIST_UPPERALPHA;
case LowerAlpha:
return ATOM_LIST_LOWERALPHA;
case UpperRoman:
return ATOM_LIST_UPPERROMAN;
case LowerRoman:
return ATOM_LIST_LOWERROMAN;
}
}
QString OpenedList::numberString() const
{
return QString::number( number() );
/*
switch ( style() ) {
case Numeric:
return QString::number( number() );
case UpperAlpha:
return toAlpha( number() ).toUpper();
case LowerAlpha:
return toAlpha( number() );
case UpperRoman:
return toRoman( number() ).toUpper();
case LowerRoman:
return toRoman( number() );
case Bullet:
default:
return "*";
}*/
}
QString OpenedList::toAlpha( int n )
{
QString str;
while ( n > 0 ) {
n--;
str.prepend( (n % 26) + 'a' );
n /= 26;
}
return str;
}
int OpenedList::fromAlpha( const QString& str )
{
int n = 0;
int u;
for ( int i = 0; i < (int) str.length(); i++ ) {
u = str[i].toLower().unicode();
if ( u >= 'a' && u <= 'z' ) {
n *= 26;
n += u - 'a' + 1;
} else {
return 0;
}
}
return n;
}
QString OpenedList::toRoman( int n )
{
/*
See p. 30 of Donald E. Knuth's "TeX: The Program".
*/
QString str;
int j = 0;
int k;
int u;
int v = 1000;
for ( ;; ) {
while ( n >= v ) {
str += roman[j];
n -= v;
}
if ( n <= 0 )
break;
k = j + 2;
u = v / roman[k - 1];
if ( roman[k - 1] == 2 ) {
k += 2;
u /= 5;
}
if ( n + u >= v ) {
str += roman[k];
n += u;
} else {
j += 2;
v /= roman[j - 1];
}
}
return str;
}
int OpenedList::fromRoman( const QString& str )
{
int n = 0;
int j;
int u;
int v = 0;
for ( int i = str.length() - 1; i >= 0; i-- ) {
j = 0;
u = 1000;
while ( roman[j] != 'i' && roman[j] != str[i].toLower() ) {
j += 2;
u /= roman[j - 1];
}
if ( u < v ) {
n -= u;
} else {
n += u;
}
v = u;
}
if ( str.toLower() == toRoman(n) ) {
return n;
} else {
return 0;
}
}
QT_END_NAMESPACE
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