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** Copyright (C) 2003-2006 Tilo Riemer <riemer@crossvc.com>,
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*****************************************************************************/

#ifndef SYNTAXHIGHLIGHTER_H_20030704
#define SYNTAXHIGHLIGHTER_H_20030704

//----------------------------------------------------------------------------

#include "config.h"

//----------------------------------------------------------------------------

namespace SyntaxHighlighter {
   enum HighlightMode {
      HM_NONE = 0,     //no highlight
      HM_UPDATE,       //used for (query) update
      HM_DIFF,         //used for diff to console
      HM_DIFFSBS,      //used for diff side-by-side
      HM_STATUS,       //used for status
      HM_LOGIN         //used for login/out
   };

   enum HighlightState {//cvs status produces paragraph spanning constructs
      HS_NONE         = 0,    //no highlight, not inside in a paragraph spanning construct
      HS_UPTODATE     = 1,    //inside a uptodate block
      HS_MODIFIED     = 2,    //inside a modified block
      HS_NEEDS_UPDATE = 3,    //inside a needs update block
      HS_NEEDS_MERGE  = 4,    //inside a needs merge block
      HS_CONFLICT     = 5,    //inside a conflict block
      HS_ADDED        = 6,    //inside a added block
      HS_REMOVED      = 7     //inside a removed block
   };
};

//----------------------------------------------------------------------------
//----------------------------------------------------------------------------

#include <qstring.h>
#include <qtextedit.h>

//----------------------------------------------------------------------------

class CSyntaxHighlighter
{
public:
   CSyntaxHighlighter() : m_mode(SyntaxHighlighter::HM_NONE) {}

   int highlightLine(QString &,int);

   /**
      Sets the currently used mode (update, diff, ...).
   */
   void setMode(SyntaxHighlighter::HighlightMode mode);

   
private:

   int highlightParagraph(QString & text, int endStateOfLastPara);

   /**
      Syntax highlighting for update commands
   */
   int update(QString & text, int endStateOfLastPara);

   /**
      Syntax highlighting for diff side-by-side
   */
   int diffSideBySide(QString & text, int endStateOfLastPara);

   /**
      Syntax highlighting for diff to console
   */
   int diff(QString & text, int endStateOfLastPara);

   /**
      Syntax highlighting for status
   */
   int status(QString & text, int endStateOfLastPara);

   /**
      Syntax highlighting for login/out
   */
   int login(QString & text, int endStateOfLastPara);

   /**
      Sets the format accordingly to the passed property, start position
      inside the paragraph and count of affected characters.
   */
   int setHighlightFormat(QString &, HighlightProperties::Properties prop,
	 int start, int count);

   QString getHexCol(const QColor &);

   int replaceTags(QString &,int=0,int=-1);

   SyntaxHighlighter::HighlightMode m_mode;
};

//----------------------------------------------------------------------------

#endif   //SYNTAXHIGHLIGHTER_H_20030704

