httext.h

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/* 
 *      HT Editor
 *      httext.h
 *
 *      Copyright (C) 1999-2002 Stefan Weyergraf (stefan@weyergraf.de)
 *
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License version 2 as
 *      published by the Free Software Foundation.
 *
 *      This program 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 this program; if not, write to the Free Software
 *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef __HTTEXT_H__
#define __HTTEXT_H__

#include "htformat.h"
#include "formats.h"

#define TEXT_DESC "text"

extern format_viewer_if httext_if;

/*
 *      CLASS ht_text_viewer
 */

class ht_text_viewer2: public ht_uformat_viewer {
public:
/* overwritten */
        virtual void handlemsg(htmsg *msg);
};

/*
 *      CLASS ht_text_sub
 */
 
class ht_text_sub: public ht_linear_sub {
protected:
/* new */
                        UINT find_linelen_backwd(byte *buf, UINT maxbuflen, FILEOFS ofs, int *le_len);
                        UINT find_linelen_forwd(byte *buf, UINT maxbuflen, FILEOFS ofs, int *le_len);
        virtual byte *match_lineend_forwd(byte *buf, UINT buflen, int *le_len);
        virtual byte *match_lineend_backwd(byte *buf, UINT buflen, int *le_len);
public:
                        void init(ht_streamfile *file, FILEOFS offset, int size);
        virtual void done();
/* overwritten */
        virtual bool convert_ofs_to_id(const FILEOFS offset, LINE_ID *line_id);
        virtual bool convert_id_to_ofs(const LINE_ID line_id, FILEOFS *offset);
        virtual void first_line_id(LINE_ID *line_id);
        virtual bool getline(char *line, const LINE_ID line_id);
        virtual void last_line_id(LINE_ID *line_id);
        virtual int next_line_id(LINE_ID *line_id, int n);
        virtual int prev_line_id(LINE_ID *line_id, int n);
};

#endif /* !__HTTEXT_H__ */

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