summaryrefslogtreecommitdiff
path: root/pico/estruct.h
blob: 2d0f650c16343e25d1211f1260215df61ca0345d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
/*
 * $Id: estruct.h 767 2007-10-24 00:03:59Z hubert@u.washington.edu $
 *
 * ========================================================================
 * Copyright 2006-2007 University of Washington
 * Copyright 2013-2019 Eduardo Chappa
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * ========================================================================
 *
 * Program:	Struct and preprocessor definitions
 *
 */

/*	ESTRUCT:	Structure and preprocesser defined for
			MicroEMACS 3.6

			written by Dave G. Conroy
			modified by Steve Wilhite, George Jones
			greatly modified by Daniel Lawrence
*/

#ifndef	ESTRUCT_H
#define	ESTRUCT_H

/*	Configuration options	*/

#define CVMVAS  1	/* arguments to page forward/back in pages	*/
#define	NFWORD	1	/* forward word jumps to begining of word	*/
#define	TYPEAH	0	/* type ahead causes update to be skipped	*/
#define	REVSTA	1	/* Status line appears in reverse video		*/


/*	internal constants	*/

#define	NBINDS	50			/* max # of bound keys		*/
#ifdef	MAXPATH
#define NFILEN  MAXPATH                 /* # of bytes, file name        */
#else
#define NFILEN  200                     /* # of bytes, file name        */
#endif
#define NBUFN   16                      /* # of bytes, buffer name      */
#define NLINE   500                     /* # of bytes, line             */
#define	NSTRING	256			/* # of bytes, string buffers	*/
#define NPAT    80                      /* # of bytes, pattern          */
#define FARAWAY 1000                    /* Huge number                  */
#define	NLOCKS	100			/* max # of file locks active	*/

#define AGRAVE  0x60                    /* M- prefix,   Grave (LK201)   */
#define METACH  0x1B                    /* M- prefix,   Control-[, ESC  */
#define CTMECH  0x1C                    /* C-M- prefix, Control-\       */
#define EXITCH  0x1D                    /* Exit level,  Control-]       */
#define CTRLCH  0x1E                    /* C- prefix,   Control-^       */
#define HELPCH  0x1F                    /* Help key,    Control-_       */

#define	QNORML	0x0000			/* Flag meaning no flag ;)	*/
#define	QFFILE	0x0001			/* Flag buffer for file neme	*/
#define	QDEFLT	0x0002			/* Flag to use default answer	*/
#define	QBOBUF	0x0004			/* Start with cursor at BOL	*/
#define QNODQT  0x0008		        /* Don't accept double quotes   */

#define FIOSUC  0                       /* File I/O, success.           */
#define FIOFNF  1                       /* File I/O, file not found.    */
#define FIOEOF  2                       /* File I/O, end of file.       */
#define FIOERR  3                       /* File I/O, error.             */
#define	FIOLNG	4			/*line longer than allowed len	*/
#define	FIODIR	5			/* File is a directory		*/
#define	FIONWT	6			/* File lacks write permission	*/
#define	FIONRD	7			/* File lacks read permission	*/
#define	FIONEX	8			/* File lacks exec permission	*/
#define	FIOSYM	9			/* File is a symbolic link	*/
#define	FIOPER	10			/* Generic permission denied    */


#define CFCPCN  0x0001                  /* Last command was C-P, C-N    */
#define CFKILL  0x0002                  /* Last command was a kill      */
#define CFFILL  0x0004                  /* Last command was a fill      */
#define	CFSRCH	0x0008			/* Last command was WhereIs	*/
#define CFFLBF  0x0010                  /* Last cmd was full buf fill   */
#define CFFLPA  0x0020                  /* Last cmd was paragraph fill  */

/* Constants for search functions */
#define SR_ORIGMEN 0x0001		/* search original menu		*/
#define SR_OPTNMEN 0x0002		/* search options menu		*/
#define SR_FORWARD 0x0010		/* search forward		*/
#define SR_BACKWRD 0x0020		/* search backward		*/
#define SR_BEGLINE 0x0040		/* search pattern at beginning of line */
#define SR_ENDLINE 0x0080		/* search pattern at end of line */
#define SR_EXACTSR 0x0100		/* search exact pattern		*/
#define SR_NOEXACT 0x0200		/* search case insensitive	*/


/*
 * macros to help filter character input
 */
#define CELLMASK 0xffffff
#define	LOBIT_CHAR(C)	((C) > 0x1f && (C) < 0x7f)
#define	HIBIT_CHAR(C)	((C) > 0x7f && (C) <= CELLMASK)
#define	HIBIT_OK(C)	(!(gmode & MDHBTIGN))
#define	VALID_KEY(C)	(LOBIT_CHAR(C) || (HIBIT_OK(C) && HIBIT_CHAR(C)))
#define ctrl(c)         ((c) & 0x1f)    /* control character mapping */


/*
 * Placeholders for keymenu tags used in some ports  (well, only in the
 * windows port for now) to turn on commands in the Menu Bar.
 */
#ifndef	KS_OSDATAVAR
#define	KS_OSDATAVAR
#define	KS_OSDATAGET(X)
#define	KS_OSDATASET(X, Y)

#define KS_NONE
#define KS_VIEW
#define KS_EXPUNGE
#define KS_ZOOM
#define KS_SORT
#define KS_HDRMODE
#define KS_MAINMENU
#define KS_FLDRLIST
#define KS_FLDRINDEX
#define KS_COMPOSER
#define KS_PREVPAGE
#define KS_PREVMSG
#define KS_NEXTMSG
#define KS_ADDRBOOK
#define KS_WHEREIS
#define KS_PRINT
#define KS_REPLY
#define KS_FORWARD
#define KS_BOUNCE
#define KS_DELETE
#define KS_UNDELETE
#define KS_FLAG
#define KS_SAVE
#define KS_EXPORT
#define KS_TAKEADDR
#define KS_SELECT
#define KS_APPLY
#define KS_POSTPONE
#define KS_SEND
#define KS_CANCEL
#define KS_ATTACH
#define KS_TOADDRBOOK
#define KS_READFILE
#define KS_JUSTIFY
#define KS_ALTEDITOR
#define KS_GENERALHELP
#define KS_SCREENHELP
#define KS_EXIT
#define KS_NEXTPAGE
#define KS_SAVEFILE
#define KS_CURPOSITION
#define KS_GOTOFLDR
#define KS_JUMPTOMSG
#define KS_RICHHDR
#define KS_EXITMODE
#define KS_REVIEW
#define KS_KEYMENU
#define KS_SELECTCUR
#define KS_UNDO
#define KS_SPELLCHK
#endif /* !KS_OSDATAVAR */


/*
 * There is a window structure allocated for every active display window. The
 * windows are kept in a big list, in top to bottom screen order, with the
 * listhead at "wheadp". Each window contains its own values of dot and mark.
 * The flag field contains some bits that are set by commands to guide
 * redisplay; although this is a bit of a compromise in terms of decoupling,
 * the full blown redisplay is just too expensive to run for every input
 * character.
 */
typedef struct  WINDOW {
        struct  WINDOW *w_wndp;         /* Next window                  */
        struct  BUFFER *w_bufp;         /* Buffer displayed in window   */
        struct  LINE *w_linep;          /* Top line in the window       */
        struct  LINE *w_dotp;           /* Line containing "."          */
        int     w_doto;                 /* Byte offset for "."          */
        struct  LINE *w_markp;          /* Line containing "mark"       */
        int	w_marko;                /* Byte offset for "mark"       */
        struct  LINE *w_imarkp;         /* INTERNAL Line with "mark"    */
        int	w_imarko;               /* INTERNAL "mark" byte offset  */
        int	w_toprow;               /* Origin 0 top row of window   */
        int	w_ntrows;               /* # of rows of text in window  */
        char    w_force;                /* If NZ, forcing row.          */
        char    w_flag;                 /* Flags.                       */
}       WINDOW;

#define WFFORCE 0x01                    /* Window needs forced reframe  */
#define WFMOVE  0x02                    /* Movement from line to line   */
#define WFEDIT  0x04                    /* Editing within a line        */
#define WFHARD  0x08                    /* Better to a full display     */
#define WFMODE  0x10                    /* Update mode line.            */

/*
 * Text is kept in buffers. A buffer header, described below, exists for every
 * buffer in the system. The buffers are kept in a big list, so that commands
 * that search for a buffer by name can find the buffer header. There is a
 * safe store for the dot and mark in the header, but this is only valid if
 * the buffer is not being displayed (that is, if "b_nwnd" is 0). The text for
 * the buffer is kept in a circularly linked list of lines, with a pointer to
 * the header line in "b_linep".
 * 	Buffers may be "Inactive" which means the files accosiated with them
 * have not been read in yet. These get read in at "use buffer" time.
 */
typedef struct  BUFFER {
	struct  BUFFER *b_bufp;         /* Link to next BUFFER          */
	struct  LINE *b_dotp;           /* Link to "." LINE structure   */
	int	b_doto;                 /* Offset of "." in above LINE  */
	struct  LINE *b_markp;          /* The same as the above two,   */
        int	b_marko;                /* but for the "mark"           */
	struct  LINE *b_linep;          /* Link to the header LINE      */
	long	b_linecnt;		/* Lines in buffer (mswin only)	*/
	long	b_mode;			/* editor mode of this buffer	*/
	char	b_active;		/* window activated flag	*/
	char    b_nwnd;                 /* Count of windows on buffer   */
	char    b_flag;                 /* Flags                        */
	char    b_fname[NFILEN];        /* File name                    */
	char    b_bname[NBUFN];         /* Buffer name                  */
}	BUFFER;

#define BFTEMP     0x01                    /* Internal temporary buffer     */
#define BFCHG      0x02                    /* Changed since last write      */
#define BFWRAPOPEN 0x04                    /* Wordwrap should open new line */


/*
 * The starting position of a region, and the size of the region in
 * characters, is kept in a region structure.  Used by the region commands.
 */
typedef struct  {
        struct  LINE *r_linep;          /* Origin LINE address.         */
        int	r_offset;               /* Origin LINE offset.          */
        long    r_size;                 /* Length in characters.        */
}       REGION;


/*
 * character and attribute pair.  The basic building block
 * of the editor.  The bitfields may have to be changed to a char
 * and short if there are problems...
 */
typedef	struct CELL {
	unsigned int c : 24;		/* Character value in cell      */
	unsigned int a : 7;		/* Its attributes               */
	unsigned int d : 1;		/* direction			*/
} CELL;

/* flags for color_options */
#define COLOR_ANSI8_OPT		0x01
#define COLOR_ANSI16_OPT	0x02
#define COLOR_ANSI256_OPT	0x04
#define COLOR_TRANS_OPT		0x08

/*
 * All text is kept in circularly linked lists of "LINE" structures. These
 * begin at the header line (which is the blank line beyond the end of the
 * buffer). This line is pointed to by the "BUFFER". Each line contains the
 * number of bytes in the line (the "used" size), the size of the text array,
 * and the text. The end of line is not stored as a byte; it's implied. Future
 * additions will include update hints, and a list of marks into the line.
 */
typedef struct  LINE {
        struct  LINE *l_fp;             /* Link to the next line        */
        struct  LINE *l_bp;             /* Link to the previous line    */
        int     l_sig;                  /* line is part of signature    */
        int     l_size;                 /* Allocated size               */
        int     l_used;                 /* Used size                    */
        CELL    l_text[1];              /* A bunch of characters.       */
}       LINE;

#define lforw(lp)       ((lp)->l_fp)
#define lback(lp)       ((lp)->l_bp)
#define lgetc(lp, n)    ((lp)->l_text[(n)])
#define lputc(lp, n, c) ((lp)->l_text[(n)]=(c))
#define llength(lp)     ((lp)->l_used)

/*
 * The editor communicates with the display using a high level interface. A
 * "TERM" structure holds useful variables, and indirect pointers to routines
 * that do useful operations. The low level get and put routines are here too.
 * This lets a terminal, in addition to having non standard commands, have
 * funny get and put character code too. The calls might get changed to
 * "termp->t_field" style in the future, to make it possible to run more than
 * one terminal type.
 */
typedef struct  {
        short   t_nrow;                 /* Number of rows - 1.          */
        short   t_ncol;                 /* Number of columns.           */
	short	t_margin;		/* min margin for extended lines*/
        short   t_mrow;                 /* Number of rows in menu       */
        int     (*t_open)(void);        /* Open terminal at the start.  */
        int	(*t_terminalinfo)(int); /* Set up terminal info         */
        int     (*t_close)(void);       /* Close terminal at end.       */
        int     (*t_getchar)(int return_on_intr,
			     int (*recorder)(int),
			     void (*bail_handler)(void));
					/* Get character from keyboard. */
        int     (*t_putchar)(UCS);      /* Put character to display.    */
        int     (*t_flush)(void);       /* Flush output buffers.        */
        int     (*t_move)(int, int);    /* Move the cursor, origin 0.   */
        int     (*t_eeol)(void);        /* Erase to end of line.        */
        int     (*t_eeop)(void);        /* Erase to end of page.        */
        int     (*t_beep)(void);        /* Beep.                        */
	int	(*t_rev)(int);		/* set reverse video state	*/
}       TERM;

/*	structure for the table of initial key bindings		*/

typedef struct  {
        UCS	k_code;                 /* Key code                     */
        int     (*k_fp)();              /* Routine to handle it         */
}       KEYTAB;

/*      sturcture used for key menu painting         */

typedef struct {
	char	*name;			/* key to display (UTF-8)		*/
	char	*label;			/* function name key invokes (UTF-8)	*/
	KS_OSDATAVAR			/* port-specific data */
}	KEYMENU;

typedef struct {
	char	*name;			/* key to display  		*/
	char	*label;			/* function name key invokes	*/
	UCS	key;			/* what to watch for and return	*/
	KS_OSDATAVAR			/* port-specific data */
}	EXTRAKEYS;

typedef struct lmlist {
	char *dir;			/* these 3 are all UTF-8 strings */
	char *fname;
	char  size[32];
	struct lmlist *next;
}	LMLIST;


typedef struct	VIDEO {
	short	v_flag;			/* Flags */
	int	v_length;		/* length of line */
	CELL	v_text[1];		/* Screen data. */
}	VIDEO;


typedef union eml {
	char *s;
	int   d;
	long  l;
	UCS   c;
}	EML;

typedef	struct _file_io_data {
	FILE *fp;			/* stdio stream into file */
        long  flags;			/* state flags */
	char *name;			/* pointer to file name */
}	FIOINFO;

#define	FIOINFO_READ	0x01
#define	FIOINFO_WRITE	0x02

#define	ISCONTROL(C)	((C) < 0x20 || (C) == 0x7F \
			 || ((gmode & P_HICTRL) && ((C) > 0x7F && (C) < 0xA0)))

#ifdef	MOUSE

/* Test if mouse position (R, C) is in menu item (X) */
#define	M_ACTIVE(R, C, X)	(((unsigned)(R)) >= (X)->tl.r       \
				    && ((unsigned)(R)) <= (X)->br.r \
				    && ((unsigned)(C)) >= (X)->tl.c \
				    && ((unsigned)(C)) < (X)->br.c)
#endif	/* MOUSE */

#endif	/* ESTRUCT_H */