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/*******************************************************************************

*                                                                              *

* highlight.h -- Nirvana Editor Syntax Highlighting Header File                *

*                                                                              *

* Copyright 2003 The NEdit Developers                                          *

*                                                                              *

* This is free software; you can redistribute it and/or modify it under the    *

* terms of the GNU General Public License as published by the Free Software    *

* Foundation; either version 2 of the License, or (at your option) any later   *

* version. In addition, you may distribute versions of this program linked to  *

* Motif or Open Motif. See README for details.                                 *

*                                                                              *

* This software is distributed in the hope that it will be useful, but WITHOUT *

* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or        *

* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for    *

* more details.                                                                *

*                                                                              *

* You should have received a copy of the GNU General Public License along with *

* software; if not, write to the Free Software Foundation, Inc., 59 Temple     *

* Place, Suite 330, Boston, MA  02111-1307 USA                                 *

*                                                                              *

* Nirvana Text Editor                                                          *

* July 31, 2001                                                                *

*                                                                              *

*******************************************************************************/



#ifndef NEDIT_HIGHLIGHT_H_INCLUDED

#define NEDIT_HIGHLIGHT_H_INCLUDED



#include "nedit.h"



#include <X11/Intrinsic.h>



/* Pattern flags for modifying pattern matching behavior */

#define PARSE_SUBPATS_FROM_START 1

#define DEFER_PARSING 2

#define COLOR_ONLY 4



/* Don't use plain 'A' or 'B' for style indices, it causes problems 

   with EBCDIC coding (possibly negative offsets when subtracting 'A'). */

#define ASCII_A ((char)65)



/* Pattern specification structure */

typedef struct {

    char *name;

    char *startRE;

    char *endRE;

    char *errorRE;

    char *style;

    char *subPatternOf;

    int flags;

} highlightPattern;



/* Header for a set of patterns */

typedef struct {

    char *languageMode;

    int lineContext;

    int charContext;

    int nPatterns;

    highlightPattern *patterns;

} patternSet;



void SyntaxHighlightModifyCB(int pos, int nInserted, int nDeleted,

    	int nRestyled, const char *deletedText, void *cbArg);

void StartHighlighting(WindowInfo *window, int warn);

void StopHighlighting(WindowInfo *window);

void AttachHighlightToWidget(Widget widget, WindowInfo *window);

void FreeHighlightingData(WindowInfo *window);

void RemoveWidgetHighlight(Widget widget);

void UpdateHighlightStyles(WindowInfo *window);

int TestHighlightPatterns(patternSet *patSet);

Pixel AllocateColor(Widget w, const char *colorName);

Pixel AllocColor(Widget w, const char *colorName, int *r, int *g, int *b);

void* GetHighlightInfo(WindowInfo *window, int pos);

highlightPattern *FindPatternOfWindow(WindowInfo *window, char *name);

int HighlightCodeOfPos(WindowInfo *window, int pos);

int HighlightLengthOfCodeFromPos(WindowInfo *window, int pos, int *checkCode);

int StyleLengthOfCodeFromPos(WindowInfo *window, int pos, const char **checkStyleName);

char *HighlightNameOfCode(WindowInfo *window, int hCode);

char *HighlightStyleOfCode(WindowInfo *window, int hCode);

Pixel HighlightColorValueOfCode(WindowInfo *window, int hCode,

      int *r, int *g, int *b);

Pixel GetHighlightBGColorOfCode(WindowInfo *window, int hCode,

      int *r, int *g, int *b);



#endif /* NEDIT_HIGHLIGHT_H_INCLUDED */