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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the tools applications of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 /* |
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43 openedlist.cpp |
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44 */ |
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45 |
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46 #include <qregexp.h> |
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47 |
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48 #include "atom.h" |
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49 #include "openedlist.h" |
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50 |
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51 QT_BEGIN_NAMESPACE |
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52 |
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53 static const char roman[] = "m\2d\5c\2l\5x\2v\5i"; |
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54 |
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55 OpenedList::OpenedList( Style style ) |
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56 : sty( style ), ini( 1 ), nex( 0 ) |
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57 { |
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58 } |
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59 |
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60 OpenedList::OpenedList( const Location& location, const QString& hint ) |
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61 : sty( Bullet ), ini( 1 ) |
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62 { |
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63 QRegExp hintSyntax( "(\\W*)([0-9]+|[A-Z]+|[a-z]+)(\\W*)" ); |
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64 |
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65 if ( hintSyntax.exactMatch(hint) ) { |
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66 bool ok; |
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67 int asNumeric = hint.toInt( &ok ); |
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68 int asRoman = fromRoman( hintSyntax.cap(2) ); |
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69 int asAlpha = fromAlpha( hintSyntax.cap(2) ); |
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70 |
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71 if ( ok ) { |
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72 sty = Numeric; |
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73 ini = asNumeric; |
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74 } else if ( asRoman > 0 && asRoman != 100 && asRoman != 500 ) { |
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75 sty = ( hint == hint.toLower() ) ? LowerRoman : UpperRoman; |
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76 ini = asRoman; |
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77 } else { |
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78 sty = ( hint == hint.toLower() ) ? LowerAlpha : UpperAlpha; |
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79 ini = asAlpha; |
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80 } |
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81 pref = hintSyntax.cap( 1 ); |
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82 suff = hintSyntax.cap( 3 ); |
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83 } else if ( !hint.isEmpty() ) { |
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84 location.warning( tr("Unrecognized list style '%1'").arg(hint) ); |
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85 } |
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86 nex = ini - 1; |
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87 } |
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88 |
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89 QString OpenedList::styleString() const |
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90 { |
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91 switch ( style() ) { |
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92 case Bullet: |
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93 default: |
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94 return ATOM_LIST_BULLET; |
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95 case Tag: |
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96 return ATOM_LIST_TAG; |
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97 case Value: |
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98 return ATOM_LIST_VALUE; |
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99 case Numeric: |
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100 return ATOM_LIST_NUMERIC; |
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101 case UpperAlpha: |
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102 return ATOM_LIST_UPPERALPHA; |
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103 case LowerAlpha: |
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104 return ATOM_LIST_LOWERALPHA; |
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105 case UpperRoman: |
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106 return ATOM_LIST_UPPERROMAN; |
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107 case LowerRoman: |
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108 return ATOM_LIST_LOWERROMAN; |
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109 } |
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110 } |
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111 |
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112 QString OpenedList::numberString() const |
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113 { |
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114 return QString::number( number() ); |
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115 /* |
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116 switch ( style() ) { |
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117 case Numeric: |
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118 return QString::number( number() ); |
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119 case UpperAlpha: |
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120 return toAlpha( number() ).toUpper(); |
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121 case LowerAlpha: |
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122 return toAlpha( number() ); |
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123 case UpperRoman: |
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124 return toRoman( number() ).toUpper(); |
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125 case LowerRoman: |
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126 return toRoman( number() ); |
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127 case Bullet: |
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128 default: |
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129 return "*"; |
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130 }*/ |
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131 } |
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132 |
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133 QString OpenedList::toAlpha( int n ) |
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134 { |
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135 QString str; |
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136 |
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137 while ( n > 0 ) { |
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138 n--; |
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139 str.prepend( (n % 26) + 'a' ); |
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140 n /= 26; |
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141 } |
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142 return str; |
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143 } |
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144 |
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145 int OpenedList::fromAlpha( const QString& str ) |
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146 { |
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147 int n = 0; |
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148 int u; |
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149 |
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150 for ( int i = 0; i < (int) str.length(); i++ ) { |
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151 u = str[i].toLower().unicode(); |
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152 if ( u >= 'a' && u <= 'z' ) { |
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153 n *= 26; |
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154 n += u - 'a' + 1; |
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155 } else { |
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156 return 0; |
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157 } |
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158 } |
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159 return n; |
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160 } |
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161 |
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162 QString OpenedList::toRoman( int n ) |
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163 { |
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164 /* |
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165 See p. 30 of Donald E. Knuth's "TeX: The Program". |
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166 */ |
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167 QString str; |
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168 int j = 0; |
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169 int k; |
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170 int u; |
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171 int v = 1000; |
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172 |
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173 for ( ;; ) { |
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174 while ( n >= v ) { |
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175 str += roman[j]; |
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176 n -= v; |
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177 } |
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178 |
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179 if ( n <= 0 ) |
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180 break; |
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181 |
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182 k = j + 2; |
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183 u = v / roman[k - 1]; |
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184 if ( roman[k - 1] == 2 ) { |
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185 k += 2; |
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186 u /= 5; |
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187 } |
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188 if ( n + u >= v ) { |
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189 str += roman[k]; |
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190 n += u; |
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191 } else { |
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192 j += 2; |
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193 v /= roman[j - 1]; |
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194 } |
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195 } |
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196 return str; |
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197 } |
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198 |
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199 int OpenedList::fromRoman( const QString& str ) |
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200 { |
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201 int n = 0; |
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202 int j; |
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203 int u; |
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204 int v = 0; |
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205 |
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206 for ( int i = str.length() - 1; i >= 0; i-- ) { |
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207 j = 0; |
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208 u = 1000; |
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209 while ( roman[j] != 'i' && roman[j] != str[i].toLower() ) { |
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210 j += 2; |
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211 u /= roman[j - 1]; |
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212 } |
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213 if ( u < v ) { |
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214 n -= u; |
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215 } else { |
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216 n += u; |
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217 } |
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218 v = u; |
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219 } |
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220 |
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221 if ( str.toLower() == toRoman(n) ) { |
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222 return n; |
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223 } else { |
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224 return 0; |
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225 } |
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226 } |
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227 |
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228 QT_END_NAMESPACE |