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/*
* HT Editor
* textfile.h
*
* Copyright (C) 2001 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 __TEXTFILE_H__
#define __TEXTFILE_H__
#include "htdata.h"
#include "stream.h"
#include "syntax.h"
/*
* CLASS ht_textfile
*/
class ht_textfile: public ht_layer_streamfile {
public:
/* new */
virtual bool convert_ofs2line(FILEOFS o, UINT *line, UINT *pofs);
virtual bool convert_line2ofs(UINT line, UINT pofs, FILEOFS *o);
virtual void delete_lines(UINT line, UINT count);
virtual void delete_chars(UINT line, UINT ofs, UINT count);
virtual bool get_char(UINT line, char *ch, UINT pos);
virtual bool getline(UINT line, UINT pofs, void *buf, UINT buflen, UINT *retlen, lexer_state *state);
virtual UINT getlinelength(UINT line);
virtual void insert_lines(UINT before, UINT count);
virtual void insert_chars(UINT line, UINT ofs, void *chars, UINT len);
virtual bool has_line(UINT line);
virtual UINT linecount();
};
/*
* CLASS ht_layer_textfile
*/
class ht_layer_textfile: public ht_textfile {
public:
void init(ht_textfile *textfile, bool own_textfile);
/* new */
virtual bool convert_ofs2line(FILEOFS o, UINT *line, UINT *pofs);
virtual bool convert_line2ofs(UINT line, UINT pofs, FILEOFS *o);
virtual void delete_lines(UINT line, UINT count);
virtual void delete_chars(UINT line, UINT ofs, UINT count);
virtual bool get_char(UINT line, char *ch, UINT pos);
virtual bool getline(UINT line, UINT pofs, void *buf, UINT buflen, UINT *retlen, lexer_state *state);
virtual UINT getlinelength(UINT line);
virtual void insert_lines(UINT before, UINT count);
virtual void insert_chars(UINT line, UINT ofs, void *chars, UINT len);
virtual bool has_line(UINT line);
virtual UINT linecount();
};
/*
* CLASS ht_ltextfile_line
*/
class ht_ltextfile_line: public ht_data {
public:
virtual ~ht_ltextfile_line();
lexer_state instate;
struct {
FILEOFS ofs;
UINT len;
} on_disk;
bool is_in_memory;
struct {
char *data;
UINT len;
} in_memory;
FILEOFS nofs;
byte lineendlen;
byte lineend[2];
};
/*
* CLASS ht_ltextfile
*/
class ht_ltextfile: public ht_textfile {
protected:
ht_clist *lines;
ht_syntax_lexer *lexer;
UINT first_parse_dirty_line;
UINT first_nofs_dirty_line;
bool dirty;
void cache_invd();
void cache_flush();
void dirty_nofs(UINT line);
void dirty_parse(UINT line);
UINT find_linelen_forwd(byte *buf, UINT maxbuflen, FILEOFS ofs, int *le_len);
virtual ht_ltextfile_line *fetch_line(UINT line);
ht_ltextfile_line *fetch_line_nofs_ok(UINT line);
ht_ltextfile_line *fetch_line_into_memory(UINT line);
UINT getlinelength_i(ht_ltextfile_line *e);
bool is_dirty_nofs(UINT line);
bool is_dirty_parse(UINT line);
byte *match_lineend_forwd(byte *buf, UINT buflen, int *le_len);
lexer_state next_instate(UINT line);
FILEOFS next_nofs(ht_ltextfile_line *l);
void split_line(UINT a, UINT pos);
void update_nofs(UINT line);
void update_parse(UINT line);
void reread();
public:
void init(ht_streamfile *streamfile, bool own_streamfile, ht_syntax_lexer *lexer);
virtual void done();
/* overwritten */
virtual void copy_to(ht_stream *stream);
virtual int extend(UINT newsize);
virtual UINT get_size();
virtual void pstat(pstat_t *s);
virtual UINT read(void *buf, UINT size);
virtual void set_layered(ht_streamfile *streamfile);
virtual int truncate(UINT newsize);
virtual int vcntl(UINT cmd, va_list vargs);
virtual UINT write(void *buf, UINT size);
/* new */
virtual bool convert_ofs2line(FILEOFS o, UINT *line, UINT *pofs);
virtual bool convert_line2ofs(UINT line, UINT pofs, FILEOFS *o);
virtual void delete_lines(UINT line, UINT count);
virtual void delete_chars(UINT line, UINT ofs, UINT count);
virtual bool get_char(UINT line, char *ch, UINT pos);
virtual bool getline(UINT line, UINT pofs, void *buf, UINT buflen, UINT *retlen, lexer_state *state);
virtual UINT getlinelength(UINT line);
virtual void insert_lines(UINT before, UINT count);
virtual void insert_chars(UINT line, UINT ofs, void *chars, UINT len);
virtual bool has_line(UINT line);
virtual UINT linecount();
};
#endif /* __TEXTFILE_H__ */
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