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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 text.cpp |
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44 */ |
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45 |
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46 #include <qregexp.h> |
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47 #include "text.h" |
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48 #include <stdio.h> |
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49 |
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50 QT_BEGIN_NAMESPACE |
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51 |
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52 Text::Text() |
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53 : first(0), last(0) |
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54 { |
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55 } |
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56 |
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57 Text::Text(const QString &str) |
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58 : first(0), last(0) |
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59 { |
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60 operator<<(str); |
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61 } |
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62 |
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63 Text::Text( const Text& text ) |
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64 : first(0), last(0) |
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65 { |
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66 operator=( text ); |
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67 } |
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68 |
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69 Text::~Text() |
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70 { |
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71 clear(); |
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72 } |
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73 |
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74 Text& Text::operator=( const Text& text ) |
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75 { |
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76 if ( this != &text ) { |
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77 clear(); |
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78 operator<<( text ); |
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79 } |
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80 return *this; |
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81 } |
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82 |
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83 Text& Text::operator<<( Atom::Type atomType ) |
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84 { |
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85 return operator<<( Atom(atomType) ); |
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86 } |
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87 |
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88 Text& Text::operator<<( const QString& string ) |
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89 { |
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90 return operator<<( Atom(Atom::String, string) ); |
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91 } |
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92 |
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93 Text& Text::operator<<( const Atom& atom ) |
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94 { |
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95 if ( first == 0 ) { |
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96 first = new Atom( atom.type(), atom.string() ); |
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97 last = first; |
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98 } else { |
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99 last = new Atom( last, atom.type(), atom.string() ); |
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100 } |
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101 return *this; |
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102 } |
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103 |
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104 Text& Text::operator<<( const Text& text ) |
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105 { |
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106 const Atom *atom = text.firstAtom(); |
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107 while ( atom != 0 ) { |
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108 operator<<( *atom ); |
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109 atom = atom->next(); |
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110 } |
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111 return *this; |
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112 } |
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113 |
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114 void Text::stripFirstAtom() |
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115 { |
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116 if ( first != 0 ) { |
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117 if ( first == last ) |
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118 last = 0; |
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119 Atom *oldFirst = first; |
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120 first = first->next(); |
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121 delete oldFirst; |
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122 } |
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123 } |
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124 |
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125 void Text::stripLastAtom() |
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126 { |
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127 if ( last != 0 ) { |
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128 Atom *oldLast = last; |
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129 if ( first == last ) { |
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130 first = 0; |
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131 last = 0; |
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132 } else { |
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133 last = first; |
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134 while ( last->next() != oldLast ) |
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135 last = last->next(); |
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136 last->setNext( 0 ); |
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137 } |
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138 delete oldLast; |
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139 } |
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140 } |
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141 |
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142 QString Text::toString() const |
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143 { |
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144 QString str; |
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145 const Atom *atom = firstAtom(); |
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146 while ( atom != 0 ) { |
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147 if ( atom->type() == Atom::String || atom->type() == Atom::AutoLink ) |
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148 str += atom->string(); |
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149 atom = atom->next(); |
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150 } |
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151 return str; |
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152 } |
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153 |
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154 Text Text::subText( Atom::Type left, Atom::Type right, const Atom *from ) const |
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155 { |
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156 const Atom *begin = from ? from : firstAtom(); |
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157 const Atom *end; |
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158 |
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159 while ( begin != 0 && begin->type() != left ) |
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160 begin = begin->next(); |
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161 if ( begin != 0 ) |
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162 begin = begin->next(); |
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163 |
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164 end = begin; |
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165 while ( end != 0 && end->type() != right ) |
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166 end = end->next(); |
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167 if ( end == 0 ) |
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168 begin = 0; |
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169 return subText( begin, end ); |
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170 } |
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171 |
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172 Text Text::sectionHeading(const Atom *sectionLeft) |
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173 { |
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174 if ( sectionLeft != 0 ) { |
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175 const Atom *begin = sectionLeft; |
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176 while ( begin != 0 && begin->type() != Atom::SectionHeadingLeft ) |
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177 begin = begin->next(); |
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178 if ( begin != 0 ) |
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179 begin = begin->next(); |
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180 |
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181 const Atom *end = begin; |
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182 while ( end != 0 && end->type() != Atom::SectionHeadingRight ) |
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183 end = end->next(); |
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184 |
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185 if ( end != 0 ) |
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186 return subText( begin, end ); |
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187 } |
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188 return Text(); |
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189 } |
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190 |
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191 const Atom *Text::sectionHeadingAtom(const Atom *sectionLeft) |
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192 { |
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193 if ( sectionLeft != 0 ) { |
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194 const Atom *begin = sectionLeft; |
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195 while ( begin != 0 && begin->type() != Atom::SectionHeadingLeft ) |
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196 begin = begin->next(); |
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197 if ( begin != 0 ) |
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198 begin = begin->next(); |
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199 |
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200 return begin; |
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201 } |
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202 return 0; |
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203 } |
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204 |
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205 void Text::dump() const |
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206 { |
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207 const Atom *atom = firstAtom(); |
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208 while ( atom != 0 ) { |
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209 QString str = atom->string(); |
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210 str.replace( "\\", "\\\\" ); |
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211 str.replace( "\"", "\\\"" ); |
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212 str.replace( "\n", "\\n" ); |
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213 str.replace( QRegExp("[^\x20-\x7e]"), "?" ); |
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214 if ( !str.isEmpty() ) |
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215 str = " \"" + str + "\""; |
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216 fprintf(stderr, " %-15s%s\n", atom->typeString().toLatin1().data(), str.toLatin1().data() ); |
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217 atom = atom->next(); |
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218 } |
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219 } |
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220 |
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221 Text Text::subText( const Atom *begin, const Atom *end ) |
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222 { |
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223 Text text; |
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224 if ( begin != 0 ) { |
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225 while ( begin != end ) { |
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226 text << *begin; |
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227 begin = begin->next(); |
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228 } |
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229 } |
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230 return text; |
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231 } |
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232 |
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233 void Text::clear() |
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234 { |
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235 while ( first != 0 ) { |
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236 Atom *atom = first; |
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237 first = first->next(); |
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238 delete atom; |
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239 } |
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240 first = 0; |
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241 last = 0; |
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242 } |
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243 |
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244 int Text::compare(const Text &text1, const Text &text2) |
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245 { |
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246 if (text1.isEmpty()) |
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247 return text2.isEmpty() ? 0 : -1; |
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248 if (text2.isEmpty()) |
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249 return 1; |
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250 |
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251 const Atom *atom1 = text1.firstAtom(); |
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252 const Atom *atom2 = text2.firstAtom(); |
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253 |
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254 for (;;) { |
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255 if (atom1->type() != atom2->type()) |
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256 return (int)atom1->type() - (int)atom2->type(); |
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257 int cmp = QString::compare(atom1->string(), atom2->string()); |
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258 if (cmp != 0) |
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259 return cmp; |
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260 |
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261 if (atom1 == text1.lastAtom()) |
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262 return atom2 == text2.lastAtom() ? 0 : -1; |
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263 if (atom2 == text2.lastAtom()) |
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264 return 1; |
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265 atom1 = atom1->next(); |
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266 atom2 = atom2->next(); |
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267 } |
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268 } |
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269 |
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270 QT_END_NAMESPACE |