khtml/misc/stringit.cpp

   1 /*
   2     This file is part of the KDE libraries
   3
   4     Copyright (C) 2004 Apple Computer
   5
   6     This library is free software; you can redistribute it and/or
   7     modify it under the terms of the GNU Library General Public
   8     License as published by the Free Software Foundation; either
   9     version 2 of the License, or (at your option) any later version.
  10
  11     This library is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14     Library General Public License for more details.
  15
  16     You should have received a copy of the GNU Library General Public License
  17     along with this library; see the file COPYING.LIB.  If not, write to
  18     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19     Boston, MA 02110-1301, USA.
  20 */
  21
  22 #include "stringit.h"
  23
  24 namespace khtml {
  25
  26 uint TokenizerString::length() const
  27 {
  28     uint length = m_currentString.m_length;
  29     if (!m_pushedChar1.isNull()) {
  30         ++length;
  31         if (!m_pushedChar2.isNull())
  32             ++length;
  33     }
  34     if (m_composite) {
  35         QList<TokenizerSubstring>::ConstIterator i = m_substrings.begin();
  36         QList<TokenizerSubstring>::ConstIterator e = m_substrings.end();
  37         for (; i != e; ++i)
  38             length += (*i).m_length;
  39     }
  40     return length;
  41 }
  42
  43 void TokenizerString::clear()
  44 {
  45     m_pushedChar1 = 0;
  46     m_pushedChar2 = 0;
  47     m_currentChar = 0;
  48     m_currentString.clear();
  49     m_substrings.clear();
  50     m_lines = 0;
  51     m_composite = false;
  52 }
  53
  54 void TokenizerString::append(const TokenizerSubstring &s)
  55 {
  56     if (s.m_length) {
  57         if (!m_currentString.m_length) {
  58             m_currentString = s;
  59         } else {
  60             m_substrings.append(s);
  61             m_composite = true;
  62         }
  63     }
  64 }
  65
  66 void TokenizerString::prepend(const TokenizerSubstring &s)
  67 {
  68     assert(!escaped());
  69     if (s.m_length) {
  70         if (!m_currentString.m_length)
  71             m_currentString = s;
  72         else {
  73             // Shift our m_currentString into our list.
  74             m_substrings.prepend(m_currentString);
  75             m_currentString = s;
  76             m_composite = true;
  77         }
  78     }
  79 }
  80
  81 void TokenizerString::append(const TokenizerString &s)
  82 {
  83     assert(!s.escaped());
  84     append(s.m_currentString);
  85     if (s.m_composite) {
  86         QList<TokenizerSubstring>::ConstIterator i = s.m_substrings.begin();
  87         QList<TokenizerSubstring>::ConstIterator e = s.m_substrings.end();
  88         for (; i != e; ++i)
  89             append(*i);
  90     }
  91     m_currentChar = m_pushedChar1.isNull() ? m_currentString.m_current : &m_pushedChar1;
  92 }
  93
  94 void TokenizerString::prepend(const TokenizerString &s)
  95 {
  96     assert(!escaped());
  97     assert(!s.escaped());
  98     if (s.m_composite) {
  99         QList<TokenizerSubstring>::ConstIterator e = s.m_substrings.end();
 100                 while (e != s.m_substrings.begin())
 101                 {
 102                         --e;
 103             prepend(*e);
 104                 }
 105     }
 106     prepend(s.m_currentString);
 107     m_currentChar = m_pushedChar1.isNull() ? m_currentString.m_current : &m_pushedChar1;
 108 }
 109
 110 void TokenizerString::advanceSubstring()
 111 {
 112     if (m_composite) {
 113         m_currentString = m_substrings.first();
 114         m_substrings.removeFirst();
 115         if (m_substrings.isEmpty())
 116             m_composite = false;
 117     } else {
 118         m_currentString.clear();
 119     }
 120 }
 121
 122 QString TokenizerString::toString() const
 123 {
 124     QString result;
 125     if (!m_pushedChar1.isNull()) {
 126         result.append(m_pushedChar1);
 127         if (!m_pushedChar2.isNull())
 128             result.append(m_pushedChar2);
 129     }
 130     m_currentString.appendTo(result);
 131     if (m_composite) {
 132         QList<TokenizerSubstring>::ConstIterator i = m_substrings.begin();
 133         QList<TokenizerSubstring>::ConstIterator e = m_substrings.end();
 134         for (; i != e; ++i)
 135             (*i).appendTo(result);
 136     }
 137     return result;
 138 }
 139
 140 }