/* * $Id: estruct.h,v 4.4 1993/08/20 00:13:58 mikes Exp $ * * Program: Struct and preprocessor definitions * * * Michael Seibel * Networks and Distributed Computing * Computing and Communications * University of Washington * Administration Builiding, AG-44 * Seattle, Washington, 98195, USA * Internet: mikes@cac.washington.edu * * Please address all bugs and comments to "pine-bugs@cac.washington.edu" * * Copyright 1991-1993 University of Washington * * Permission to use, copy, modify, and distribute this software and its * documentation for any purpose and without fee to the University of * Washington is hereby granted, provided that the above copyright notice * appears in all copies and that both the above copyright notice and this * permission notice appear in supporting documentation, and that the name * of the University of Washington not be used in advertising or publicity * pertaining to distribution of the software without specific, written * prior permission. This software is made available "as is", and * THE UNIVERSITY OF WASHINGTON DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, * WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT LIMITATION ALL IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND IN * NO EVENT SHALL THE UNIVERSITY OF WASHINGTON BE LIABLE FOR ANY SPECIAL, * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, TORT * (INCLUDING NEGLIGENCE) OR STRICT LIABILITY, ARISING OUT OF OR IN CONNECTION * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * * Pine and Pico are trademarks of the University of Washington. * No commercial use of these trademarks may be made without prior * written permission of the University of Washington. * */ /* 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 */ #define NFILEN 80 /* # of bytes, file name */ #define NBUFN 16 /* # of bytes, buffer name */ #define NLINE 256 /* # of bytes, line */ #define NSTRING 256 /* # of bytes, string buffers */ #define NKBDM 256 /* # of strokes, keyboard macro */ #define NPAT 80 /* # of bytes, pattern */ #undef HUGE #define HUGE 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-_ */ #undef CTRL #define CTRL 0x0100 /* Control flag, or'ed in */ #define META 0x0200 /* Meta flag, or'ed in */ #define CTLX 0x0400 /* ^X flag, or'ed in */ #define SPEC 0x0800 /* special key (arrow's, etc) */ #define FUNC 0x1000 /* special key (function keys) */ #if MSDOS #define SHFT 0x2000 /* shifted (for function keys) */ #define ALTD 0x4000 /* ALT key... */ #endif #define QNORML 0x0000 /* Flag meaning no flag ;) */ #define QFFILE 0x0001 /* Flag buffer for file neme */ #define QDEFLT 0x0002 /* Flag to use default answer */ #undef FALSE #define FALSE 0 /* False, no, bad, etc. */ #undef TRUE #define TRUE 1 /* True, yes, good, etc. */ #define ABORT 2 /* Death, ^G, abort, etc. */ #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 CFCPCN 0x0001 /* Last command was C-P, C-N */ #define CFKILL 0x0002 /* Last command was a kill */ #define CFFILL 0x0004 /* Last command was a kill */ #define BELL 0x07 /* a bell character */ #define TAB 0x09 /* a tab character */ /* * 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 "." */ short w_doto; /* Byte offset for "." */ struct LINE *w_markp; /* Line containing "mark" */ short w_marko; /* Byte offset for "mark" */ struct LINE *w_imarkp; /* INTERNAL Line with "mark" */ short w_imarko; /* INTERNAL "mark" byte offset */ char w_toprow; /* Origin 0 top row of window */ char 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 */ short b_doto; /* Offset of "." in above LINE */ struct LINE *b_markp; /* The same as the above two, */ short b_marko; /* but for the "mark" */ struct LINE *b_linep; /* Link to the header LINE */ char b_active; /* window activated flag */ char b_nwnd; /* Count of windows on buffer */ char b_flag; /* Flags */ char b_mode; /* editor mode of this buffer */ char b_fname[NFILEN]; /* File name */ char b_bname[NBUFN]; /* Buffer name */ } BUFFER; #if TERMCAP || TERMINFO struct KBSTREE { char value; int func; /* Routine to handle it */ struct KBSTREE *down; struct KBSTREE *left; }; #endif #define BFTEMP 0x01 /* Internal temporary buffer */ #define BFCHG 0x02 /* Changed since last write */ /* * 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. */ short 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 : 8; /* Character value in cell */ unsigned int a : 8; /* Its attributes */ } CELL; /* * 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 a 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 */ short l_size; /* Allocated size */ short 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. */ short t_ncol; /* Number of columns. */ short t_margin; /* min margin for extended lines*/ short t_scrsiz; /* size of scroll region " */ int (*t_open)(); /* Open terminal at the start. */ int (*t_close)(); /* Close terminal at end. */ int (*t_getchar)(); /* Get character from keyboard. */ int (*t_putchar)(); /* Put character to display. */ int (*t_flush)(); /* Flush output buffers. */ int (*t_move)(); /* Move the cursor, origin 0. */ int (*t_eeol)(); /* Erase to end of line. */ int (*t_eeop)(); /* Erase to end of page. */ int (*t_beep)(); /* Beep. */ int (*t_rev)(); /* set reverse video state */ } TERM; /* structure for the table of initial key bindings */ typedef struct { short k_code; /* Key code */ int (*k_fp)(); /* Routine to handle it */ } KEYTAB; /* structure for the name binding table */ typedef struct { char *n_name; /* name of function key */ int (*n_func)(); /* function name is bound to */ } NBIND; #endif /* ESTRUCT_H */