starmath/source/wordexportbase.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include "wordexportbase.hxx"
  11 #include <node.hxx>
  12
  13 SmWordExportBase::SmWordExportBase(const SmNode* pIn)
  14     : m_pTree(pIn)
  15 {
  16 }
  17
  18 SmWordExportBase::~SmWordExportBase() = default;
  19
  20 void SmWordExportBase::HandleNode(const SmNode* pNode, int nLevel)
  21 {
  22     SAL_INFO("starmath.wordbase", "Node: " << nLevel << " " << int(pNode->GetType()) << " " << pNode->GetNumSubNodes());
  23     switch (pNode->GetType())
  24     {
  25     case SmNodeType::Attribut:
  26         HandleAttribute(static_cast< const SmAttributNode* >(pNode), nLevel);
  27         break;
  28     case SmNodeType::Text:
  29         HandleText(pNode,nLevel);
  30         break;
  31     case SmNodeType::VerticalBrace:
  32         HandleVerticalBrace(static_cast< const SmVerticalBraceNode* >(pNode), nLevel);
  33         break;
  34     case SmNodeType::Brace:
  35         HandleBrace(static_cast< const SmBraceNode* >(pNode), nLevel);
  36         break;
  37     case SmNodeType::Oper:
  38         HandleOperator(static_cast< const SmOperNode* >(pNode), nLevel);
  39         break;
  40     case SmNodeType::UnHor:
  41         HandleUnaryOperation(static_cast< const SmUnHorNode* >(pNode), nLevel);
  42         break;
  43     case SmNodeType::BinHor:
  44         HandleBinaryOperation(static_cast< const SmBinHorNode* >(pNode), nLevel);
  45         break;
  46     case SmNodeType::BinVer:
  47         HandleFractions(pNode,nLevel,nullptr);
  48         break;
  49     case SmNodeType::Root:
  50         HandleRoot(static_cast< const SmRootNode* >(pNode), nLevel);
  51         break;
  52     case SmNodeType::Special:
  53     {
  54         auto pText= static_cast<const SmTextNode*>(pNode);
  55         //if the token str and the result text are the same then this
  56         //is to be seen as text, else assume it's a mathchar
  57         if (pText->GetText() == pText->GetToken().aText)
  58             HandleText(pText,nLevel);
  59         else
  60             HandleMath(pText,nLevel);
  61         break;
  62     }
  63     case SmNodeType::Math:
  64     case SmNodeType::MathIdent:
  65         HandleMath(pNode,nLevel);
  66         break;
  67     case SmNodeType::SubSup:
  68         HandleSubSupScript(static_cast< const SmSubSupNode* >(pNode), nLevel);
  69         break;
  70     case SmNodeType::Expression:
  71         HandleAllSubNodes(pNode, nLevel);
  72         break;
  73     case SmNodeType::Table:
  74         //Root Node, PILE equivalent, i.e. vertical stack
  75         HandleTable(pNode,nLevel);
  76         break;
  77     case SmNodeType::Matrix:
  78         HandleMatrix(static_cast< const SmMatrixNode* >(pNode), nLevel);
  79         break;
  80     case SmNodeType::Line:
  81     {
  82 // TODO
  83         HandleAllSubNodes(pNode, nLevel);
  84     }
  85     break;
  86 #if 0
  87     case SmNodeType::Align:
  88         HandleMAlign(pNode,nLevel);
  89         break;
  90 #endif
  91     case SmNodeType::Place:
  92         // explicitly do nothing, MSOffice treats that as a placeholder if item is missing
  93         break;
  94     case SmNodeType::Blank:
  95         HandleBlank();
  96         break;
  97     default:
  98         HandleAllSubNodes(pNode, nLevel);
  99         break;
 100     }
 101 }
 102
 103 //Root Node, PILE equivalent, i.e. vertical stack
 104 void SmWordExportBase::HandleTable(const SmNode* pNode, int nLevel)
 105 {
 106     //The root of the starmath is a table, if
 107     //we convert this them each iteration of
 108     //conversion from starmath to Word will
 109     //add an extra unnecessary level to the
 110     //Word output stack which would grow
 111     //without bound in a multi step conversion
 112     if (nLevel || pNode->GetNumSubNodes() > 1)
 113         HandleVerticalStack(pNode, nLevel);
 114     else
 115         HandleAllSubNodes(pNode, nLevel);
 116 }
 117
 118 void SmWordExportBase::HandleAllSubNodes(const SmNode* pNode, int nLevel)
 119 {
 120     int size = pNode->GetNumSubNodes();
 121     for (int i = 0;
 122             i < size;
 123             ++i)
 124     {
 125 // TODO remove when all types of nodes are handled properly
 126         if (pNode->GetSubNode(i) == nullptr)
 127         {
 128             SAL_WARN("starmath.wordbase", "Subnode is NULL, parent node not handled properly");
 129             continue;
 130         }
 131         HandleNode(pNode->GetSubNode(i), nLevel + 1);
 132     }
 133 }
 134
 135 void SmWordExportBase::HandleUnaryOperation(const SmUnHorNode* pNode, int nLevel)
 136 {
 137     // update HandleMath() when adding new items
 138     SAL_INFO("starmath.wordbase", "Unary: " << int(pNode->GetToken().eType));
 139
 140     HandleAllSubNodes(pNode, nLevel);
 141 }
 142
 143 void SmWordExportBase::HandleBinaryOperation(const SmBinHorNode* pNode, int nLevel)
 144 {
 145     SAL_INFO("starmath.wordbase", "Binary: " << int(pNode->Symbol()->GetToken().eType));
 146     // update HandleMath() when adding new items
 147     switch (pNode->Symbol()->GetToken().eType)
 148     {
 149     case TDIVIDEBY:
 150         return HandleFractions(pNode, nLevel, "lin");
 151     default:
 152         HandleAllSubNodes(pNode, nLevel);
 153         break;
 154     }
 155 }
 156
 157 void SmWordExportBase::HandleMath(const SmNode* pNode, int nLevel)
 158 {
 159     SAL_INFO("starmath.wordbase", "Math: " << int(pNode->GetToken().eType));
 160     switch (pNode->GetToken().eType)
 161     {
 162     case TDIVIDEBY:
 163     case TACUTE:
 164         OSL_ASSERT(false);
 165         SAL_FALLTHROUGH; // the above are handled elsewhere, e.g. when handling BINHOR
 166     default:
 167         HandleText(pNode, nLevel);
 168         break;
 169     }
 170 }
 171
 172 void SmWordExportBase::HandleSubSupScript(const SmSubSupNode* pNode, int nLevel)
 173 {
 174     // set flags to a bitfield of which sub/sup items exists
 175     int flags = (pNode->GetSubSup(CSUB) != nullptr ? (1 << CSUB) : 0)
 176                 | (pNode->GetSubSup(CSUP) != nullptr ? (1 << CSUP) : 0)
 177                 | (pNode->GetSubSup(RSUB) != nullptr ? (1 << RSUB) : 0)
 178                 | (pNode->GetSubSup(RSUP) != nullptr ? (1 << RSUP) : 0)
 179                 | (pNode->GetSubSup(LSUB) != nullptr ? (1 << LSUB) : 0)
 180                 | (pNode->GetSubSup(LSUP) != nullptr ? (1 << LSUP) : 0);
 181     HandleSubSupScriptInternal(pNode, nLevel, flags);
 182 }
 183
 184 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */