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Member "cb2bib-2.0.1/src/c2b/texParser.cpp" (12 Feb 2021, 3900 Bytes) of package /linux/privat/cb2bib-2.0.1.tar.gz:

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    1 /***************************************************************************
    2  *   Copyright (C) 2004-2021 by Pere Constans
    3  *   constans@molspaces.com
    4  *   cb2Bib version 2.0.1. Licensed under the GNU GPL version 3.
    5  *   See the LICENSE file that comes with this distribution.
    6  ***************************************************************************/
    7 #include "texParser.h"
    8 
    9 #include "cb2bib_utilities.h"
   10 
   11 
   12 void texParser::parse(QString tex)
   13 {
   14     _stream.setString(&tex, QIODevice::ReadOnly);
   15     _paragraph.clear();
   16     _stop_parsing = false;
   17     while (!_stream.atEnd() && !_stop_parsing)
   18     {
   19         readLine(true);
   20         if (_line.isEmpty())
   21         {
   22             flush();
   23             parseEmptyLine();
   24         }
   25         else if (_line.startsWith('%'))
   26         {
   27             flush();
   28             parseComment(_line);
   29         }
   30         else if (_line.startsWith('\\'))
   31             doElement();
   32         else
   33             _paragraph += ' ' + _line;
   34     }
   35     flush();
   36 }
   37 
   38 void texParser::doElement()
   39 {
   40     if (_line.startsWith("\\begin{"))
   41         gotoEnd("begin");
   42     else if (_line.startsWith("\\section{"))
   43         gotoEndBraces("section");
   44     else if (_line.startsWith("\\subsection{"))
   45         gotoEndBraces("subsection");
   46     else if (_line.startsWith("\\subsubsection{"))
   47         gotoEndBraces("subsubsection");
   48     else if (_line.startsWith("\\title{"))
   49         gotoEndBraces("title");
   50     else if (_line.startsWith("\\author{"))
   51         gotoEndBraces("author");
   52     else if (_line.startsWith("\\newcommand{"))
   53         gotoEndMacro("newcommand");
   54     else if (_line.startsWith("\\documentclass"))
   55         flushLaTeXMarkup("documentclass");
   56     else if (_line.startsWith("\\maketitle"))
   57         flushLaTeXMarkup("maketitle");
   58     else if (_line.startsWith("\\end{document}"))
   59         flushLaTeXMarkup("document");
   60     else if (_line.startsWith("\\bibliography"))
   61         flushLaTeXMarkup("bibliography");
   62     else
   63         _paragraph += ' ' + _line;
   64 }
   65 
   66 void texParser::gotoEnd(const QString& e)
   67 {
   68     QString block_name;
   69     QString block_contents;
   70     const int pos(e.length() + 2);
   71     c2bUtils::inBraces(pos, _line, &block_name);
   72     if (block_name == "document")
   73     {
   74         flushLaTeXMarkup("document");
   75         return;
   76     }
   77     QRegExp end_block(QString("^\\s*\\\\end\\{%1\\}").arg(block_name));
   78     _element = _line;
   79     while (!_stream.atEnd())
   80     {
   81         readLine();
   82         if (_line.contains(end_block))
   83         {
   84             _element += '\n' + _line.trimmed();
   85             break;
   86         }
   87         else
   88         {
   89             _element += '\n' + _line;
   90             block_contents += '\n' + _line;
   91         }
   92     }
   93     flushElement(block_name, block_contents);
   94 }
   95 
   96 void texParser::gotoEndBraces(const QString& e)
   97 {
   98     QString in;
   99     const int pos(e.length() + 2);
  100     _element = _line;
  101     while (!_stream.atEnd() && !c2bUtils::inBraces(pos, _element, &in))
  102         _element += '\n' + readLine();
  103     flushElement(e, c2bUtils::simplifyString(in));
  104 }
  105 
  106 void texParser::gotoEndMacro(const QString& e)
  107 {
  108     // Macro syntax: \newcommand{name}[number of arguments]{definition}
  109     int line_init_pos(e.length() + 3);
  110     int element_init_pos(0);
  111     _element = _line;
  112     while (!_stream.atEnd())
  113     {
  114         // Find the begining of macro definition
  115         for (int pos = line_init_pos; pos < _line.length(); ++pos)
  116             if (_line.at(pos) == '{')
  117             {
  118                 QString in;
  119                 while (!_stream.atEnd() && !c2bUtils::inBraces(element_init_pos + pos + 1, _element, &in))
  120                     _element += '\n' + readLine();
  121                 in = _element;
  122                 in.remove('\\' + e);
  123                 flushElement(e, c2bUtils::simplifyString(in));
  124                 return;
  125             }
  126         // Try next line
  127         line_init_pos = 0;
  128         element_init_pos = _element.length() + 1;
  129         _element += '\n' + readLine();
  130     }
  131 }