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main.c
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main.c
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/* main.c
* Original code written by Dave G. Conroy,
* substantially modified by Moshe Braner, July-December 1986.
* Further substantial modifications by MB: January and April, 1988.
*
* Parts of the program Copyright (c) 1986, 1988 by Moshe Braner.
* Program name changed from microEMACS to MEX.
*
* Ported to Coherent 3.1 and UN*X System V
* Copyright (c) 1991 by Udo Munk
*
* Permission is granted to copy and use this program,
* provided that this copyright notice and the source
* code for the program are included in each copy,
* and that it is not sold for profit.
*/
/*
* This file contains the
* main driving routine, and some
* keyboard processing code, for the
* MicroEMACS screen editor.
*/
#include <setjmp.h>
#include <stdio.h>
#include <string.h>
#include "ed.h"
void edmore(char fname[]);
#if CURSES
#include "curkeys.h"
#endif
#if ST_DA
#include <obdefs.h>
#include <gemdefs.h>
#endif
#if (MSDOS | W32)
#include <fcntl.h>
#include <conio.h>
#endif
#if VMS
#include <ssdef.h>
#define GOOD (SS$_NORMAL)
#endif
#ifndef GOOD
#define GOOD 0
#endif
#define BASE 0 /* mb: states of the machine */
#define ESC 1
#define ARG 2
#define EXEC 3
#define DASTART 990 /* starting the DA */
#define DACLOSE 991 /* closing the DA */
char *rcsid = "$Id: main.c,v 1.41 2024/05/22 17:56:04 axel Exp $";
jmp_buf loop1;
int changedandstored;
int logit = LOGIT; /* mb: log keystrokes */
int playback = FALSE; /* mb: playback from log file */
#if ST_DA
char *clfn[NFILES];
#else
char **clfn; /* mb: filenames storage */
#endif
int nfiles; /* mb: number of file args */
int maxnfiles; /* mb: max # of fn defaults */
int fileindex; /* mb: index into filename list */
int currow; /* Working cursor row */
int curcol; /* Working cursor column */
int fillcol = 0; /* Current fill column */
int lmargin = 0; /* mb: Current left margin */
int tabsize = 2; /* mb: added */
int hdev; /* mb: hard copy device ID */
int thisflag; /* Flags, this command */
int lastflag; /* Flags, last command */
int curgoal; /* Goal column */
int ovrstrk = FALSE; /* mb: insert/overstrike flag */
int deldir = FALSE; /* mb: <Delete> direction flag */
int casesens = FALSE; /* mb: search case sensitive */
BUFFER *curbp; /* Current buffer */
BUFFER *oldbp = NULL; /* mb: previous buffer */
WINDOW *curwp; /* Current window */
BUFFER *bheadp = NULL; /* BUFFER listhead */
WINDOW *wheadp; /* WINDOW listhead */
BUFFER *blistp; /* Buffer list BUFFER */
BUFFER *bhelpp; /* Help screens BUFFER */
int kbdm[NKBDM]; /* Macro */
int *kbdmip; /* Input for above */
int *kbdmop; /* Output for above */
char pat[NPAT] = {'\0'}; /* Pattern */
#if AtST
int vidrev = FALSE; /* may be changed by cmd line */
#endif
#if (MSDOS)
int origvidmode; /* save on entry */
int nrmlvidattr; /* normal in our vidmode */
int curvidattr; /* update all along */
int vidrev = FALSE; /* may be changed by cmd line */
int vidmode = LASTMODE; /* may be changed by cmd line */
#endif
#if ST_DA
extern int gl_apid;
int menu_id, event, ret;
int xdesk, ydesk, hdesk, wdesk;
int msgbuff[8];
char menusave[1520];
#endif
typedef struct {
int k_code; /* Key code */
int (*k_fp)(); /* Routine to handle it */
} KEYTAB;
extern int mlrelpy(); /* get a string from the user */
extern int quit(); /* Quit */
extern int ctlxlp(); /* Begin macro */
extern int ctlxrp(); /* End macro */
extern int ctlxe(); /* Execute macro */
extern int fileread(); /* Get a file, read only */
extern int filevisit(); /* Get a file, read write */
extern int filewrite(); /* Write a file */
extern int filesave(); /* Save current file */
extern int filename(); /* Adjust file name */
extern int getccol(); /* Get current column */
extern int gotobol(); /* Move to start of line */
extern int forwchar(); /* Move forward by characters */
extern int gotoeol(); /* Move to end of line */
extern int backchar(); /* Move backward by characters */
extern int forwline(); /* Move forward by lines */
extern int backline(); /* Move backward by lines */
extern int forwpage(); /* Move forward by pages */
extern int backpage(); /* Move backward by pages */
extern int gotobob(); /* Move to start of buffer */
extern int gotoeob(); /* Move to end of buffer */
extern int setfillcol(); /* Set fill column. */
extern int setlmargin(); /* mb: added */
extern int reformat(); /* mb: added */
extern int setmark(); /* Set mark */
extern int swapmark(); /* Swap "." and mark */
extern int forwsearch(); /* Search forward */
extern int backsearch(); /* Search backwards */
extern int showcpos(); /* Show the cursor position */
extern int nextwind(); /* Move to the next window */
extern int prevwind(); /* Move to the previous window */
extern int onlywind(); /* Make current window only one */
extern int splitwind(); /* Split current window */
extern int mvdnwind(); /* Move window down */
extern int mvupwind(); /* Move window up */
extern int enlargewind(); /* Enlarge display window. */
extern int listbuffers(); /* Display list of buffers */
extern int usebuffer(); /* Switch a window to a buffer */
extern int killbuffer(); /* Make a buffer go away. */
extern int reposition(); /* Reposition window */
extern int negrepos(); /* Reposition window other way */
extern int refresh(); /* Refresh the screen */
extern int twiddle(); /* Twiddle characters */
extern int ltwiddle(); /* Twiddle lines - mb: added */
extern int tab(); /* Insert tab */
extern int tnewline(); /* Insert CR-LF */
extern int indent(); /* Insert CR-LF, then indent */
extern int openline(); /* Open up a blank line */
extern int deblank(); /* Delete blank lines */
extern int backword(); /* Backup by words */
extern int forwword(); /* Advance by words */
extern int forwdel(); /* Forward delete */
extern int backdel(); /* Backward delete */
extern int killtxt(); /* Kill forward */
extern int yank(); /* Yank back from killbuffer. */
extern int unyank(); /* mb: added */
extern int upperword(); /* Upper case word */
extern int lowerword(); /* Lower case word */
extern int upperregion(); /* Upper case region */
extern int lowerregion(); /* Lower case region */
extern int capword(); /* Initial capitalize word */
extern int delfword(); /* Delete forward word */
extern int delbword(); /* Delete backward word */
extern int killregion(); /* Kill region */
extern int copyregion(); /* Copy region to kill buffer */
extern int spawncli(); /* Run CLI in a subjob */
extern int spawn(); /* Run a command in a subjob */
extern int quickexit(); /* low keystroke style exit */
extern int hardcopy(); /* mb: added. Output to printer */
extern int wrapword(); /* mb: added the rest, */
extern int help(); /* just in case */
extern int forw_brace();
extern int back_brace();
extern int instog();
extern int casestog();
extern int fortog();
extern int editog();
extern int visitog();
extern int gotolinum();
extern int forwparag();
extern int backparag();
extern int renambuf();
extern int page_nextw();
extern int back_nextw();
extern int flush_kbuf();
extern int doplay(); /* fwd ref */
extern int emacs_quit(); /* fwd ref */
extern int ctrlg(); /* fwd ref */
extern int undo(); /* fwd ref */
extern int bkill(); /* fwd ref */
extern int fbdel(); /* fwd ref */
extern int togdeldir(); /* fwd ref */
extern int defmacro(); /* fwd ref */
/*
* Command table.
* This table is *roughly* in ASCII
* order, left to right across the characters
* of the command. This expains the funny
* location of the control-X commands.
*/
KEYTAB keytab[] = {
CNTL|'@', setmark,
CNTL|'A', gotobol,
CNTL|'B', backchar,
#ifndef EMBEDDED
CNTL|'C', quit, /* mb: was C-X C-C */
#else
CNTL|'Y', quit, /* mb: was C-X C-C */
#endif
0x163, quit, /* CentOS5.2 */
ED|CNTL|'D', forwdel,
CNTL|'E', gotoeol,
CNTL|'F', forwchar,
CNTL|'G', undo,
ED|CNTL|'H', backdel,
#if (MSDOS | W32)
ED|CNTL|0x3F, bkill, /* mb: ^BS */
#else
ED|CNTL|0x3F, fbdel, /* mb: DELETE key */
#endif
ED|CNTL|'I', tab,
#if defined(VT100) || defined(HP700)
ED|CNTL|'J', tnewline,
#else
ED|CNTL|'J', indent,
#endif
ED|CNTL|'K', killtxt,
CNTL|'L', refresh,
ED|CNTL|'M', tnewline,
CNTL|'N', forwline,
ED|CNTL|'O', instog, /* openline, */
CNTL|'P', backline,
CNTL|'S', forwsearch,
CNTL|'R', backpage,
ED|CNTL|'T', twiddle,
CNTL|'V', forwpage,
ED|CNTL|'W', killregion,
#ifndef EMBEDDED
ED|CNTL|'Y', yank,
#else
ED|CNTL|'C', yank,
#endif
CNTL|'Z', quickexit, /* quick save and exit */
0x197, quickexit, /* CentOS5.2 */
#ifndef EMBEDDED
CTLX|CNTL|'B', renambuf, /* mb: added */
CTLX|CNTL|'C', spawncli, /* Run CLI in subjob. */
CTLX|CNTL|'D', fortog, /* ar: added */
CTLX|CNTL|'E', editog, /* mb: added */
CTLX|CNTL|'F', filename,
CTLX|CNTL|'R', fileread,
#if V7
/* skip */
#else
ED|CTLX|CNTL|'S', filesave,
#endif
CTLX|CNTL|'V', filevisit,
ED|CTLX|CNTL|'W', filewrite,
#endif
CTLX|CNTL|'X', swapmark,
ED|CTLX|CNTL|'Y', unyank, /* mb: added */
CTLX|CNTL|'Z', emacs_quit,
#ifndef EMBEDDED
CTLX|CNTL|0x3F, togdeldir, /* DELETE key dir */
CTLX|'?', listbuffers,
CTLX|'!', spawn,
#if CANLOG
CTLX|'&', doplay,
#endif
#endif
CTLX|'=', showcpos,
CTLX|'(', ctlxlp,
CTLX|')', ctlxrp,
CTLX|'1', onlywind,
CTLX|'2', splitwind,
CTLX|'B', usebuffer,
CTLX|'C', casestog,
CTLX|'E', ctlxe,
ED|CTLX|'F', reformat, /* mb: added */
CTLX|'K', killbuffer,
ED|CTLX|'L', setlmargin, /* mb: added */
CTLX|'M', defmacro, /* mb: added */
CTLX|'N', nextwind,
CTLX|'O', nextwind, /* mb: EMACS-like */
CTLX|'P', prevwind,
CTLX|'Q', visitog, /* mb: added */
ED|CTLX|'R', setfillcol,
#ifndef EMBEDDED
ED|CTLX|'S', filesave, /* mb: instead of ^X^S */
#endif
ED|CTLX|'T', ltwiddle, /* mb: added */
CTLX|'V', page_nextw, /* mb: added */
CTLX|'Z', back_nextw, /* mb: added */
META|'!', reposition,
#if VT100
/* skip this - it clashes with function key codes */
#else
META|']', forw_brace, /* mb: added */
META|'[', back_brace, /* mb: added */
#endif
META|')', forw_brace, /* mb: added */
META|'}', forw_brace, /* mb: added */
META|'{', back_brace, /* mb: added */
META|'(', back_brace, /* mb: added */
META|'.', setmark,
META|' ', setmark,
META|'>', gotoeob,
META|'<', gotobob,
META|'B', backword,
ED|META|'C', capword,
ED|META|'D', delfword,
META|'F', forwword,
META|'G', gotolinum, /* mb: added */
ED|META|'I', instog, /* mb: added */
ED|META|'L', lowerword,
META|'R', backsearch,
META|'S', forwsearch,
ED|META|'U', upperword,
META|'V', backpage,
META|'W', copyregion,
META|'Y', flush_kbuf,
ED|META|CNTL|'H', delbword,
ED|META|CNTL|0x3F, fbwdel,
#if EXTRA
ED|CTLX|CNTL|'L', lowerregion,
CTLX|CNTL|'N', mvdnwind,
ED|CTLX|CNTL|'O', deblank,
CTLX|CNTL|'P', mvupwind,
ED|CTLX|CNTL|'U', upperregion,
CTLX|'^', enlargewind,
META|'N', forwparag, /* mb: added */
META|'P', backparag, /* mb: added */
#endif
#if (AtST | MSDOS | W32)
CTLX|CNTL|'H', hardcopy, /* mb: added */
#endif
#if AtST /* mb: added */
FUNC|0x4B, backchar, /* <-- */
FUNC|SHFT|0x4B, backword,
FUNC|SHFT|0x73, backword,
FUNC|META|0x4B, gotobol,
FUNC|0x4D, forwchar, /* --> */
FUNC|SHFT|0x4D, forwword,
FUNC|SHFT|0x74, forwword,
FUNC|META|0x4D, gotoeol,
FUNC|0x50, forwline,
FUNC|0x48, backline,
#if EXTRA
FUNC|SHFT|0x50, mvdnwind,
FUNC|SHFT|0x48, mvupwind,
FUNC|META|0x50, forwparag,
FUNC|META|0x48, backparag,
#endif
FUNC|0x61, undo, /* Undo */
FUNC|SHFT|0x61, flush_kbuf,
ED|FUNC|0x53, fbdel, /* Del */
ED|FUNC|SHFT|0x53, killtxt,
CTLX|FUNC|0x53, togdeldir,
ED|FUNC|0x0E, backdel, /* Backspace */
ED|FUNC|SHFT|0x0E, bkill,
ED|FUNC|META|0x53, fbwdel, /* Delete */
ED|FUNC|META|0x0E, delbword, /* Backspace */
FUNC|0x47, reposition, /* Clr/Home */
FUNC|SHFT|0x47, negrepos, /* w/shift */
FUNC|META|0x47, gotobob, /* Esc-Home */
FUNC|SHFT|0x77, gotoeob, /* Ctrl-Home */
ED|FUNC|0x52, openline, /* Insert */
#if EXTRA
ED|FUNC|SHFT|0x52, deblank,
#endif
FUNC|0x3B, ctlxe, /* F1 */
FUNC|SHFT|0x3B, defmacro,
FUNC|0x3C, usebuffer, /* F2 */
FUNC|SHFT|0x3C, filevisit,
FUNC|0x3D, fileread, /* F3 */
FUNC|SHFT|0x3D, filewrite,
ED|FUNC|0x3E, killtxt, /* F4 */
ED|FUNC|SHFT|0x3E, killregion,
ED|FUNC|0x3F, yank, /* F5 */
FUNC|SHFT|0x3F, copyregion,
FUNC|0x40, backsearch, /* F6 */
FUNC|SHFT|0x40, back_brace,
FUNC|0x41, forwsearch, /* F7 */
FUNC|SHFT|0x41, forw_brace,
FUNC|0x42, backpage, /* F8 */
FUNC|SHFT|0x42, back_nextw,
FUNC|0x43, forwpage, /* F9 */
FUNC|SHFT|0x43, page_nextw,
FUNC|0x44, setmark, /* F10 */
FUNC|SHFT|0x44, swapmark,
#if HELP
FUNC|0x62, help, /* Help */
#else
FUNC|0x62, listbuffers,
#endif
FUNC|SHFT|0x62, listbuffers,
/* Alt to act as Ctrl-X-Ctrl: */
FUNC|SHFT|0x12, editog, /* Alt-E */
ED|FUNC|SHFT|0x14, ltwiddle, /* Alt-T */
FUNC|SHFT|0x2D, swapmark, /* Alt-X */
/* Alt to act as Ctrl-X: */
FUNC|SHFT|0x83, showcpos,
FUNC|SHFT|0x78, onlywind,
FUNC|SHFT|0x79, splitwind,
FUNC|SHFT|0x30, usebuffer,
ED|FUNC|SHFT|0x21, reformat,
FUNC|SHFT|0x25, killbuffer,
ED|FUNC|SHFT|0x26, setlmargin,
FUNC|SHFT|0x32, defmacro,
FUNC|SHFT|0x31, nextwind,
FUNC|SHFT|0x19, prevwind,
ED|FUNC|SHFT|0x13, setfillcol,
FUNC|SHFT|0x10, visitog,
ED|FUNC|SHFT|0x1F, filesave,
FUNC|SHFT|0x2F, filevisit,
/* Other Alt- functions: */
FUNC|SHFT|0x2E, casestog, /* Alt-C */
FUNC|SHFT|0x20, spawncli, /* Alt-D */
FUNC|SHFT|0x22, gotolinum, /* Alt-G */
ED|FUNC|SHFT|0x17, instog, /* Alt-I */
ED|FUNC|SHFT|0x18, openline, /* Alt-O */
ED|FUNC|SHFT|0x11, copyregion, /* Alt-W */
ED|FUNC|SHFT|0x15, yank, /* Alt-Y */
FUNC|SHFT|0x80, back_brace, /* Alt-( */
FUNC|SHFT|0x81, forw_brace, /* Alt-) */
#if CANLOG
FUNC|SHFT|0x7E, doplay, /* Alt-7 */
#endif
#if EXTRA
FUNC|SHFT|0x7D, enlargewind, /* Alt-^ */
#endif
/* Still available:
FUNC|SHFT|0x23, Alt-H
FUNC|SHFT|0x24, Alt-J
FUNC|SHFT|0x16, Alt-U
FUNC|SHFT|0x2C, Alt-Z
FUNC|SHFT|0x7A, Alt-3
FUNC|SHFT|0x7B, Alt-4
FUNC|SHFT|0x7C, Alt-5
FUNC|SHFT|0x7F, Alt-8
FUNC|SHFT|0x82, Alt '-'
FUNC|SHFT|0x??, spawn, Alt-?
*/
#endif
#if (MSDOS | W32)
FUNC|0x4B, backchar, /* <-- */
FUNC|0x73, backword, /* ^<- */
FUNC|META|0x4B, gotobol,
FUNC|0x4D, forwchar, /* --> */
FUNC|0x74, forwword, /* ^-> */
FUNC|META|0x4D, gotoeol,
FUNC|0x50, forwline,
FUNC|0x48, backline,
ED|FUNC|0x53, fbdel, /* Del */
CTLX|FUNC|0x53, togdeldir,
ED|FUNC|META|0x53, fbwdel, /* Esc-Del */
FUNC|0x49, backpage, /* PgUp */
FUNC|0x84, back_nextw, /* ^PgUp */
FUNC|0x51, forwpage, /* PgDn */
FUNC|0x76, page_nextw, /* ^PgDn */
FUNC|0x47, gotobol, /* Home */
FUNC|0x4F, gotoeol, /* End */
FUNC|0x77, gotobob, /* ^Home */
FUNC|0x75, gotoeob, /* ^End */
FUNC|META|0x47, reposition, /* Esc-Home */
FUNC|META|0x4F, negrepos, /* Esc-End */
ED|FUNC|0x52, instog, /* Insert */
#if HELP
FUNC|0x3B, help, /* F1 */
#else
FUNC|0x3B, listbuffers,
#endif
FUNC|0x54, listbuffers, /* shift-F1 */
FUNC|0x3C, splitwind, /* F2 */
FUNC|0x55, flush_kbuf,
FUNC|0x3D, filevisit, /* F3 */
FUNC|0x56, fileread,
FUNC|0x3E, onlywind, /* F4 */
FUNC|0x57, filewrite,
FUNC|0x3F, forwsearch, /* F5 */
ED|FUNC|0x58, killregion,
FUNC|0x40, backsearch, /* F6 */
ED|FUNC|0x59, yank,
FUNC|0x41, back_brace, /* F7 */
FUNC|0x5A, forw_brace,
FUNC|0x42, quickexit, /* F8 */
FUNC|0x5B, quit,
FUNC|0x43, setmark, /* F9 */
FUNC|0x5C, swapmark,
FUNC|0x44, ctlxe, /* F10 */
FUNC|0x5D, defmacro,
/* Alt to act as Ctrl-X-Ctrl: */
FUNC|0x12, editog, /* Alt-E */
ED|FUNC|0x14, ltwiddle, /* Alt-T */
FUNC|0x2D, swapmark, /* Alt-X */
/* Alt to act as Ctrl-X: */
FUNC|0x83, showcpos,
FUNC|0x78, onlywind,
FUNC|0x79, splitwind,
FUNC|0x30, usebuffer,
ED|FUNC|0x21, reformat,
FUNC|0x25, killbuffer,
ED|FUNC|0x26, setlmargin,
FUNC|0x32, defmacro,
FUNC|0x31, nextwind,
FUNC|0x19, prevwind,
ED|FUNC|0x13, setfillcol,
FUNC|0x10, visitog,
ED|FUNC|0x1F, filesave,
FUNC|0x2F, filevisit,
/* Other Alt- functions: */
FUNC|0x2E, casestog, /* Alt-C */
FUNC|0x20, spawncli, /* Alt-D */
FUNC|0x22, gotolinum, /* Alt-G */
ED|FUNC|0x17, instog, /* Alt-I */
ED|FUNC|0x18, openline, /* Alt-O */
ED|FUNC|0x11, copyregion, /* Alt-W */
ED|FUNC|0x15, yank, /* Alt-Y */
FUNC|0x2C, spawn, /* Alt-Z */
FUNC|0x80, back_brace, /* Alt-( */
FUNC|0x81, forw_brace, /* Alt-) */
#if CANLOG
FUNC|0x7E, doplay, /* Alt-7 */
#endif
#if EXTRA
FUNC|0x7D, enlargewind, /* Alt-^ */
#endif
/* Still available:
FUNC|0x23, Alt-H
FUNC|0x24, Alt-J
FUNC|0x16, Alt-U
FUNC|0x7A, Alt-3
FUNC|0x7B, Alt-4
FUNC|0x7C, Alt-5
FUNC|0x7F, Alt-8
FUNC|0x82, Alt '-'
*/
#endif
#if HELP /* mb: added */
META|'?', help,
META|CNTL|'[', help,
#ifdef HELPCH
HELPCH, help,
#endif
#endif
0, ctrlg
};
#define NKEYTAB (sizeof(keytab)/sizeof(keytab[0]))
/*
* Initialize all of the buffers
* and windows. The file name is passed down as
* an argument, because the main routine may have been
* told to read in a file by default, and we want the
* buffer name to be right.
*/
void edinit(fname)
char fname[];
{
register BUFFER *bp;
register WINDOW *wp;
char bname[NBUFN];
makename(bname, fname);
bp = bfind(bname, TRUE, BFEDIT); /* First buffer */
blistp = bfind("[List]", TRUE, BFTEMP); /* Buffer list buffer */
bhelpp = bfind("[Help]", TRUE, BFTEMP); /* Help screens buffer */
wp = (WINDOW *) malloc(sizeof(WINDOW)); /* First window */
if (bp==NULL || wp==NULL || blistp==NULL || bhelpp==NULL)
#if BFILES
_exit(1);
#else
exit(1);
#endif
curbp = bp; /* Make this current */
wheadp = wp;
curwp = wp;
wp->w_wndp = NULL; /* Initialize window */
wp->w_bufp = bp;
bp->b_nwnd = 1; /* Displayed. */
wp->w_linep = bp->b_linep;
wp->w_dotp = bp->b_linep;
wp->w_doto = 0;
wp->w_markp = NULL;
wp->w_marko = 0;
wp->w_toprow = 0;
wp->w_ntrows = term.t_nrow-1; /* "-1" for mode line. */
wp->w_force = 0;
wp->w_offset = 0;
wp->w_flag = WFMODE|WFHARD; /* Full. */
}
/*
* This is the general command execution
* routine. It handles the fake binding of all the
* keys to "self-insert". It also clears out the "thisflag"
* word, and arranges to move it to the "lastflag", so that
* the next command can look at it. Return the status of
* command.
* mb: added the BFEDIT / ED stuff.
*/
int
execute(c, f, n)
register int c;
int f, n;
{
register KEYTAB *ktp;
register int k;
register int d;
register int status;
if ((c & 0xFF00) == 0)
goto ascii;
d = c;
if (curbp->b_flag & BFEDIT)
d |= ED;
ktp = &keytab[0]; /* Look in key table. */
while (ktp < &keytab[NKEYTAB]) {
k = ktp->k_code;
if (k==c || k==d) { /* mb: fit, ED| or not */
thisflag = 0;
status = (*ktp->k_fp)(f, n);
lastflag = thisflag;
return (status);
}
++ktp;
}
if (c != d) {
#if GDEBUG
mlwrite("No such command (code 0x%x)", c);
#else
mlwrite("No such command");
#endif
return (FALSE);
} /* else fall thru to "view-only" message */
ascii:
if (! (curbp->b_flag & BFEDIT)) {
#if (AtST | MSDOS | W32)
mlwrite("View-only mode - Alt-E to edit");
#else
mlwrite("View-only mode - ^X^E to edit");
#endif
lastflag = 0; /* Fake last flags. */
return(FALSE);
}
/* mb:
* If fill column is defined, the argument is positive,
* and we are now past fill column, perform word wrap.
* Don't insert a space if just wrapped.
*/
if (fillcol>0 && n>0 && getccol(FALSE)>=fillcol) {
wrapword(c);
if (c == ' ') {
lastflag = 0;
return (FALSE);
}
}
/* mb: skipped the ASCII check */
if (n <= 0) { /* Fenceposts. */
lastflag = 0;
return (n<0 ? FALSE : TRUE);
}
thisflag = 0; /* For the future. */
status = linsert(n, c, ovrstrk); /* mb: added param */
lastflag = thisflag;
return (status);
}
#if (ST_DA == 0)
void usage()
{
#if AtST
Cconws("\r\nMEX version " VERSION "\r\n");
Cconws("\r\nUsage: mex [options] [file(s)]\r\n");
Cconws("\r\nOptions:\r\n");
Cconws("\t-c #\t# columns\r\n");
Cconws("\t-f #\tfill column = #\r\n");
Cconws("\t-f #-#\tleft & right margins\r\n");
Cconws("\t-g #\tgoto line #\r\n");
Cconws("\t-i\tinverse video\r\n");
#if CANLOG
#if LOGIT
Cconws("\t-l\tdon't log keystrokes\r\n");
#else
Cconws("\t-l\tlog keystrokes\r\n");
#endif
Cconws("\t-p\tplay back log file\r\n");
#endif
Cconws("\t-r #\t# rows\r\n");
Cconws("\t-t #\ttabsize = #\r\n");
Cconws("\t-v\tview-only mode\r\n\n");
Cconws("\tPress any key ");
Cnecin();
_exit(0);
#endif
#if (MSDOS)
cputs("\r\nMEX version " VERSION "\r\n");
cputs("\r\nUsage: mex [options] [file(s)]\r\n");
cputs("\r\nOptions:\r\n");
cputs("-c # # columns\r\n");
cputs("-d BIOS, rather than direct, screen output\r\n");
cputs("-f # fill column = #\r\n");
cputs("-f #-# left & right margins\r\n");
cputs("-g # goto line #\r\n");
cputs("-i inverse video\r\n");
#if CANLOG
#if LOGIT
cputs("-l don't log keystrokes\r\n");
#else
cputs("-l log keystrokes\r\n");
#endif
cputs("-m # text mode #\r\n");
cputs(" (0=BW40, 1=C40, 2=BW80, 3=C80, 7=MONO)\r\n");
cputs("-p play back log file\r\n");
#endif
cputs("-r # # rows\r\n");
cputs("-t # tabsize = #\r\n");
cputs("-v view-only mode\r\n\n");
_exit(0);
#endif
#if (V7 | VMS | CPM | W32)
puts("\nMEX version " VERSION);
puts("\nUsage: mex [options] [file(s)]");
puts("Options:");
puts("\t-c #\t# columns");
puts("\t-f #\tfill column = #");
puts("\t-f #-#\tleft & right margins");
puts("\t-g #\tgoto line #");
#if CANLOG
#if LOGIT
puts("\t-l\tdon't log keystrokes");
#else
puts("\t-l\tlog keystrokes");
#endif
puts("\t-p\tplay back log file");
#endif
puts("\t-r #\t# rows");
puts("\t-t #\ttabsize = #");
puts("\t-v\tview-only mode");
#if V7
#if CANLOG
puts("\nSuggested: setenv MEXLOG $HOME/.mexlog");
#endif
#endif
exit(0);
#endif
}
#endif
#if ST_DA
#define register /* avoid that in main()! */
#endif
#if VT100 && !W32
int
escseq(c)
register int c;
{
if (c=='[' || c=='O') { /* Arrows and extras. */
c = getkey();
if (c == 'A')
return (CNTL | 'P');
if (c == 'B')
return (CNTL | 'N');
if (c == 'C')
return (CNTL | 'F');
if (c == 'D')
return (CNTL | 'B');
if (c == 'L')
return (META | 'I');
if (c == 'H')
return (CNTL | 'A');
if (c == 'F')
return (CNTL | 'E');
if (c == 'I')
return (META | 'V');
if (c == 'G')
return (CNTL | 'V');
if (c == 'P') /* PF1 */
return (META | 'B');
if (c == 'Q') /* PF2 */
return (META | 'F');
if (c == 'R') /* PF3 */
return (META | '.');
if (c == 'S') /* PF4 */
return (CTLX | 'E');
/* else */
return (0);
}
return (0);
}
#endif
int mainloop(char *fil, WINDOW *scr) {
int c=0;
int f, n, r;
int negarg;
int state;
changedandstored = 0;
if (scr) {
windw1 = scr;
vtinit();
}
if (fil) {
edinit("main");
cpyfname (curbp->b_fname, fil);
update(TRUE);
if (readin(fil) == FIOFNF) {
free(curbp);
free(curwp);
vttidy();
return 0;
}
fileindex = 1;
// addline(fil, curbp);
// curwp->w_flag |= WFMOVE|WFHARD|WFFORCE;
}
kbdm[0] = CTLX|')'; /* Empty macro */
lastflag = 0; /* Fake last flags. */
f = FALSE;
n = 1;
negarg = FALSE;
#if ST_DA
state = DASTART;
c = ~NOKEY;
#else
update(TRUE);
c = getkey();
#if (V7 | VMS)
while (c==(CNTL|'Q') || c==(CNTL|'S'))
c = getkey(); /* mb: dump handshakes */
#endif
if (c != NOKEY)
mlerase();
state = BASE;
#endif
r = setjmp(loop1);
if (r == 0) for(;;) { /* main loop */
while (c == NOKEY) { /* mb: happens after errors in getkey() */
update(FALSE);
c = getkey();
}
switch (state) {
case BASE:
if (c==(CNTL|'U')) {
n = 4;
mlwrite("arg: 4");
c = getkey();
state = ARG;
break;
}
if (c == METACH) {
c = getkey();
state = ESC;
break;
}
#if W32
if (c == 0xE0) {
c = getkey();
state = ESC;
break;
}
#endif
if (c == (CNTL|'X')) {
c = getkey();
#if AtST
if (c==(FUNC|0x61) || c==(CNTL|'G')) { /* Undo */
#endif
#if (MSDOS | W32)
if (c==(FUNC|0x3C) || c==(CNTL|'G')) { /* F2 */
#endif
#if (V7 | VMS | CPM)
if (c == (CNTL|'G')) {
#endif
c = getkey();
break;
}
if (c>='a' && c<='z')
c -= 0x20; /* force upper case */
c |= CTLX;
}
state = EXEC;
break;
case ESC:
if (c==('#')) {
n = 4;
mlwrite("arg: 4");
c = getkey();
state = ARG;
break;
}
if (c=='-' || (c>='0' && c<='9')) {
state = ARG;
break;
}
#if VT100 && !W32
if (c=='[' || c=='O') {
state = EXEC;
c = escseq(c);
if (! c) {
c = getkey();
state = BASE;
}
break;
}
#endif
#if (HP700)
if (c == 'A') {
c = (CNTL | 'P');
state = BASE;
break;
}
if (c == 'B') {
c = (CNTL | 'N');
state = BASE;
break;
}
if (c == 'C') {
c = (CNTL | 'F');
state = BASE;
break;
}
if (c == 'D') {
c = (CNTL | 'B');
state = BASE;
break;
}
if (c == 'S') {
c = (META | 'R');
state = BASE;
break;
}
if (c == 'T') {
c = (META | 'S');
state = BASE;
break;
}
#endif
#if (W32)
if (c == 'H') {
c = (CNTL | 'P');
state = BASE;
break;
}
if (c == 'P') {
c = (CNTL | 'N');
state = BASE;
break;
}
if (c == 'K') {
c = (CNTL | 'B');
state = BASE;
break;
}
if (c == 'M') {
c = (CNTL | 'F');
state = BASE;
break;
}
if (c == 'Q') {