"Fossies" - the Fresh Open Source Software Archive

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


As a special service "Fossies" has tried to format the requested source page into HTML format using (guessed) C and C++ source code syntax highlighting (style: standard) with prefixed line numbers and code folding option. Alternatively you can here view or download the uninterpreted source code file. For more information about "texParser.cpp" see the Fossies "Dox" file reference documentation and the latest Fossies "Diffs" side-by-side code changes report: 2.0.0_vs_2.0.1.

    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 }