/*
* switch to the next buffer in the buffer list
*
* int f, n; default flag, numeric argument
*/
int nextbuffer(int f, int n)
{
struct buffer *bp = NULL; /* eligable buffer to switch to */
struct buffer *bbp; /* eligable buffer to switch to */
/* make sure the arg is legit */
if (f == FALSE)
n = 1;
if (n < 1)
return FALSE;
bbp = curbp;
while (n-- > 0) {
/* advance to the next buffer */
bp = bbp->b_bufp;
/* cycle through the buffers to find an eligable one */
while (bp == NULL || bp->b_flag & BFINVS) {
if (bp == NULL)
bp = bheadp;
else
bp = bp->b_bufp;
/* don't get caught in an infinite loop! */
if (bp == bbp)
return FALSE;
}
bbp = bp;
}
return swbuffer(bp);
}
int getfile(char fname[])
{
BUFFER *bp;
LINE *lp;
char bname[NBUFN]; /* buffer name to put file */
int i, s;
for (bp = bheadp; bp != (BUFFER*)0; bp = bp->b_bufp)
{
if ((bp->b_flag & BFTEMP) == 0 && strcmp(bp->b_fname, fname) == 0)
{
if (--curbp->b_nwnd == 0)
{
curbp->b_dotp = curwp->w_dotp;
curbp->b_doto = curwp->w_doto;
curbp->b_markp = curwp->w_markp;
curbp->b_marko = curwp->w_marko;
}
swbuffer(bp);
lp = curwp->w_dotp;
i = curwp->w_ntrows / 2;
while (i-- && lback(lp) != curbp->b_linep)
lp = lback(lp);
curwp->w_linep = lp;
curwp->w_flag |= WFMODE | WFHARD;
mlwrite("[Old buffer]");
return (TRUE);
}
}
makename(bname, fname); /* New buffer name */
while ((bp = bfind(bname, FALSE, 0)) != (BUFFER*)0)
{
s = mlreply("Buffer name: ", bname, NBUFN);
if (s == ABORT) /* ^G to just quit */
return (s);
if (s == FALSE)
{ /* CR to clobber it */
makename(bname, fname);
break;
}
}
if (bp == (BUFFER*)0 && (bp = bfind(bname, TRUE, 0)) == (BUFFER*)0)
{
mlwrite("Cannot create buffer");
return (FALSE);
}
if (--curbp->b_nwnd == 0)
{ /* Undisplay */
curbp->b_dotp = curwp->w_dotp;
curbp->b_doto = curwp->w_doto;
curbp->b_markp = curwp->w_markp;
curbp->b_marko = curwp->w_marko;
}
curbp = bp; /* Switch to it */
curwp->w_bufp = bp;
curbp->b_nwnd++;
return (readin(fname)); /* Read it in */
}
/*
* getfile()
*
* char fname[]; file name to find
* int lockfl; check the file for locks?
*/
int getfile(char *fname, int lockfl)
{
struct buffer *bp;
struct line *lp;
int i;
int s;
char bname[NBUFN]; /* buffer name to put file */
#if MSDOS
mklower(fname); /* msdos isn't case sensitive */
#endif
for (bp = bheadp; bp != NULL; bp = bp->b_bufp) {
if ((bp->b_flag & BFINVS) == 0
&& strcmp(bp->b_fname, fname) == 0) {
swbuffer(bp);
lp = curwp->w_dotp;
i = curwp->w_ntrows / 2;
while (i-- && lback(lp) != curbp->b_linep)
lp = lback(lp);
curwp->w_linep = lp;
curwp->w_flag |= WFMODE | WFHARD;
cknewwindow();
mlwrite("(Old buffer)");
return TRUE;
}
}
makename(bname, fname); /* New buffer name. */
while ((bp = bfind(bname, FALSE, 0)) != NULL) {
/* old buffer name conflict code */
s = mlreply("Buffer name: ", bname, NBUFN);
if (s == ABORT) /* ^G to just quit */
return s;
if (s == FALSE) { /* CR to clobber it */
makename(bname, fname);
break;
}
}
if (bp == NULL && (bp = bfind(bname, TRUE, 0)) == NULL) {
mlwrite("Cannot create buffer");
return FALSE;
}
if (--curbp->b_nwnd == 0) { /* Undisplay. */
curbp->b_dotp = curwp->w_dotp;
curbp->b_doto = curwp->w_doto;
curbp->b_markp = curwp->w_markp;
curbp->b_marko = curwp->w_marko;
}
curbp = bp; /* Switch to it. */
curwp->w_bufp = bp;
curbp->b_nwnd++;
s = readin(fname, lockfl); /* Read it in. */
cknewwindow();
return s;
}
/*
* Attach a buffer to a window. The
* values of dot and mark come from the buffer
* if the use count is 0. Otherwise, they come
* from some other window.
*/
int usebuffer(int f, int n)
{
struct buffer *bp;
int s;
char bufn[NBUFN];
if ((s = mlreply("Use buffer: ", bufn, NBUFN)) != TRUE)
return s;
if ((bp = bfind(bufn, TRUE, 0)) == NULL)
return FALSE;
return swbuffer(bp);
}
/* ARGSUSED0 */
int usebuffer (int f, int n)
{
BUFFER *bp;
char bufn[NBUFN];
int s;
if ((s = mlreply ("Use buffer: ", bufn, NBUFN)) != TRUE)
return (s);
if ((bp = bfind (bufn, TRUE, 0)) == NULL)
return (FALSE);
return (swbuffer (bp));
}
int
help(int f, int n)
{
if(n == 0)
{
meBuffer *hbp ;
if(((hbp=helpBufferFind()) == NULL) ||
(helpBufferLoad(hbp) <= 0))
return meABORT ;
return swbuffer(frameCur->windowCur,hbp);
}
return findHelpItem((meUByte *)"MicroEmacs",0) ;
}
/* ARGSUSED0 */
int killbuffer (int f, int n)
{
BUFFER *bp;
BUFFER *bp_alt;
char bufn[NBUFN];
char prompt[NFILEN];
int s;
sprintf(prompt, "Kill Buffer: (default %s) ", curbp->b_bname);
s = mlreply (prompt, bufn, NBUFN);
if (s == ABORT)
return ABORT;
else if (s == FALSE) {
bp = curbp;
} else {
/* return if cant find named buffer */
if ((bp = bfind (bufn, FALSE, 0)) == NULL)
return FALSE;
}
/* beep if attempt to kill buffer list */
if (bp == blistp) {
(*term.t_beep) ();
mlerase();
return FALSE;
}
/* find a buffer to switch to, not this one and not an internal buffer */
bp_alt = bheadp;
while (bp_alt != NULL)
{
if (bp_alt != bp && (bp_alt->b_flag & BFTEMP) != BFTEMP)
break;
bp_alt = bp_alt->b_bufp;
}
/* no alternate buffer, try for scratch or create it */
if (bp_alt == NULL) {
bp_alt = get_scratch();
}
if (bp_alt == NULL) {
return (FALSE);
}
swbuffer(bp_alt);
s = zotbuf(bp);
mlerase();
return s;
}
/* ARGSUSED0 */
int nextbuffer (int f, int n)
{
BUFFER *bp;
bp = curbp->b_bufp;
/* cycle through the buffers to find an eligable one */
while ((bp == NULL) || (bp->b_flag & BFTEMP))
{
if (bp == NULL)
bp = bheadp;
else
bp = bp->b_bufp;
}
return (swbuffer (bp));
}
/*
* Attach a buffer to a window. The
* values of dot and mark come from the buffer
* if the use count is 0. Otherwise, they come
* from some other window.
*/
PASCAL NEAR usebuffer(f, n)
{
register BUFFER *bp; /* temporary buffer pointer */
/* get the buffer name to switch to */
bp = getdefb();
bp = getcbuf(TEXT24, bp ? bp->b_bname : "main", TRUE);
/* "Use buffer" */
if (!bp)
return(ABORT);
/* make it invisable if there is an argument */
if (f == TRUE)
bp->b_flag |= BFINVS;
/* switch to it in any case */
return(swbuffer(bp));
}
/* ARGSUSED */
int
pipecmd(int f, int n)
{
register BUFFER *bp; /* pointer to buffer to zot */
register int s;
char line[NLINE]; /* command line send to shell */
/* get the command to pipe in */
hst_init('!');
s = ShellPrompt(&save_shell[!global_g_val(GMDSAMEBANGS)], line, -TRUE);
hst_flush();
/* prompt ok? */
if (s != TRUE)
return s;
/* take care of autowrite */
if (writeall(f,n,FALSE,FALSE,TRUE) != TRUE)
return FALSE;
#if BEFORE
if (((s = ((bp = bfind(OUTPUT_BufName, 0)) != NULL)) == TRUE)
&& ((s = popupbuff(bp)) == TRUE)
&& ((s = swbuffer(bp)) == TRUE)
&& ((s = readin(line, FALSE, bp, TRUE)) == TRUE))
set_rdonly(bp, line, MDVIEW);
#else
if ((s = ((bp = bfind(OUTPUT_BufName, 0)) != NULL)) != TRUE)
return s;
if ((s = popupbuff(bp)) != TRUE)
return s;
ch_fname(bp,line);
bp->b_active = FALSE; /* force a re-read */
if ((s = swbuffer_lfl(bp,FALSE)) != TRUE)
return s;
set_rdonly(bp, line, MDVIEW);
#endif
return (s);
}
int buffermenu(int f, int n)
{
BUFFER *bp;
BUFFER *org_bp = curbp;
int c,k;
int bufptr;
int bufcount = 0;
bufptr = 1;
start:
listbuffers(f,n);
swbuffer(blistp);
onlywind(0,0);
bufcount = count_buffers();
if (bufptr > bufcount)
bufptr = bufcount;
if (bufcount > 0)
forwline(0, bufptr + 1);
else
forwline(0, 2);
for (;;) {
mlwrite("Buffer Menu: 1,2,s,v,k,q ");
update();
c = ttgetc();
/* if no buffers, only allow exit */
if (bufcount == 0) {
switch (c) {
case 'q': case 'Q': case 'x': case 'X':
break;
default:
(*term.t_beep) ();
continue;
}
}
/*
* pre process escape sequence to get up/down arrows
* convert to CTRL+N, CTRL+P
*/
if (c == ESC) {
k = getctl();
if (k == '[') {
k = getctl();
switch(k) {
case 'A': c = CTRL_P; break;
case 'B': c = CTRL_N; break;
default:
(*term.t_beep)();
continue;
}
} else {
k = getctl();
(*term.t_beep) ();
continue;
}
} /* if ESC */
switch (c) {
case 'n':
case 'N':
case CTRL_N:
if (bufcount == bufptr) {
(*term.t_beep) ();
break;
}
forwline(0,1);
bufptr++;
break;
case 'p':
case 'P':
case CTRL_P:
if (bufptr == 1) {
(*term.t_beep) ();
break;
}
backline(0,1);
bufptr--;
break;
case '1':
bp = get_buffer(bufptr);
swbuffer(bp);
onlywind(0,0);
mlerase();
return TRUE;
case '2':
bp = get_buffer(bufptr);
swbuffer(bp);
onlywind(0,0);
/* need to check or is still valid */
if (valid_buf(org_bp) == TRUE && bufcount > 1)
{
splitwind(0,0);
swbuffer(org_bp);
nextwind(0,0);
}
mlerase();
return TRUE;
/* save file */
case 's':
case 'S':
bp = get_buffer(bufptr);
if (bp != NULL) {
curbp = bp;
(void)filesave(0,0);
curbp = blistp;
goto start;
}
break;
/* toggle read only */
case 'v':
case 'V':
case '%':
bp = get_buffer(bufptr);
if (bp != NULL) /* be defensive */
bp->b_flag ^= BFRO;
goto start;
break;
/* kill buffer */
case 'k':
case 'K':
bp = get_buffer(bufptr);
if (bp != NULL)
zotbuf(bp);
goto start;
break;
/* exit buffer menu */
case 'q':
case 'Q':
case 'x':
case 'X':
if (bufcount == 0) {
bp = get_scratch();
swbuffer(bp);
onlywind(0,0);
mlerase();
return TRUE;
}
if (valid_buf(org_bp) == TRUE)
swbuffer(org_bp);
else
swbuffer(bheadp);
onlywind(0,0);
mlerase();
return TRUE;
/* any other key */
default:
(*term.t_beep) ();
break;
}
}
mlerase();
return TRUE;
}
int main(int argc, char **argv)
{
int c = -1; /* command character */
int f; /* default flag */
int n; /* numeric repeat count */
int mflag; /* negative flag on repeat */
struct buffer *bp; /* temp buffer pointer */
int firstfile; /* first file flag */
int carg; /* current arg to scan */
int startflag; /* startup executed flag */
struct buffer *firstbp = NULL; /* ptr to first buffer in cmd line */
int basec; /* c stripped of meta character */
int viewflag; /* are we starting in view mode? */
int gotoflag; /* do we need to goto a line at start? */
int gline = 0; /* if so, what line? */
int searchflag; /* Do we need to search at start? */
int saveflag; /* temp store for lastflag */
int errflag; /* C error processing? */
char bname[NBUFN]; /* buffer name of file to read */
#if CRYPT
int cryptflag; /* encrypting on the way in? */
char ekey[NPAT]; /* startup encryption key */
#endif
int newc;
#if PKCODE & VMS
(void) umask(-1); /* Use old protection (this is at wrong place). */
#endif
#if PKCODE & BSD
sleep(1); /* Time for window manager. */
#endif
#if UNIX
#ifdef SIGWINCH
signal(SIGWINCH, sizesignal);
#endif
#endif
if (argc == 2) {
if (strcmp(argv[1], "--help") == 0) {
usage(EXIT_FAILURE);
}
if (strcmp(argv[1], "--version") == 0) {
version();
exit(EXIT_SUCCESS);
}
}
/* Initialize the editor. */
vtinit(); /* Display */
edinit("main"); /* Buffers, windows */
varinit(); /* user variables */
viewflag = FALSE; /* view mode defaults off in command line */
gotoflag = FALSE; /* set to off to begin with */
searchflag = FALSE; /* set to off to begin with */
firstfile = TRUE; /* no file to edit yet */
startflag = FALSE; /* startup file not executed yet */
errflag = FALSE; /* not doing C error parsing */
#if CRYPT
cryptflag = FALSE; /* no encryption by default */
#endif
/* Parse the command line */
for (carg = 1; carg < argc; ++carg) {
/* Process Switches */
#if PKCODE
if (argv[carg][0] == '+') {
gotoflag = TRUE;
gline = atoi(&argv[carg][1]);
} else
#endif
if (argv[carg][0] == '-') {
switch (argv[carg][1]) {
/* Process Startup macroes */
case 'a': /* process error file */
case 'A':
errflag = TRUE;
break;
case 'e': /* -e for Edit file */
case 'E':
viewflag = FALSE;
break;
case 'g': /* -g for initial goto */
case 'G':
gotoflag = TRUE;
gline = atoi(&argv[carg][2]);
break;
#if CRYPT
case 'k': /* -k<key> for code key */
case 'K':
cryptflag = TRUE;
strcpy(ekey, &argv[carg][2]);
break;
#endif
#if PKCODE
case 'n': /* -n accept null chars */
case 'N':
nullflag = TRUE;
break;
#endif
case 'r': /* -r restrictive use */
case 'R':
restflag = TRUE;
break;
case 's': /* -s for initial search string */
case 'S':
searchflag = TRUE;
strncpy(pat, &argv[carg][2], NPAT);
break;
case 'v': /* -v for View File */
case 'V':
viewflag = TRUE;
break;
default: /* unknown switch */
/* ignore this for now */
break;
}
} else if (argv[carg][0] == '@') {
/* Process Startup macroes */
if (startup(&argv[carg][1]) == TRUE)
/* don't execute emacs.rc */
startflag = TRUE;
} else {
/* Process an input file */
/* set up a buffer for this file */
makename(bname, argv[carg]);
unqname(bname);
/* set this to inactive */
bp = bfind(bname, TRUE, 0);
strcpy(bp->b_fname, argv[carg]);
bp->b_active = FALSE;
if (firstfile) {
firstbp = bp;
firstfile = FALSE;
}
/* set the modes appropriatly */
if (viewflag)
bp->b_mode |= MDVIEW;
#if CRYPT
if (cryptflag) {
bp->b_mode |= MDCRYPT;
myencrypt((char *) NULL, 0);
myencrypt(ekey, strlen(ekey));
strncpy(bp->b_key, ekey, NPAT);
}
#endif
}
}
#if UNIX
signal(SIGHUP, emergencyexit);
signal(SIGTERM, emergencyexit);
#endif
/* if we are C error parsing... run it! */
if (errflag) {
if (startup("error.cmd") == TRUE)
startflag = TRUE;
}
/* if invoked with no other startup files,
run the system startup file here */
if (startflag == FALSE) {
startup("");
startflag = TRUE;
}
discmd = TRUE; /* P.K. */
/* if there are any files to read, read the first one! */
bp = bfind("main", FALSE, 0);
if (firstfile == FALSE && (gflags & GFREAD)) {
swbuffer(firstbp);
zotbuf(bp);
} else
bp->b_mode |= gmode;
/* Deal with startup gotos and searches */
if (gotoflag && searchflag) {
update(FALSE);
mlwrite("(Can not search and goto at the same time!)");
} else if (gotoflag) {
if (gotoline(TRUE, gline) == FALSE) {
update(FALSE);
mlwrite("(Bogus goto argument)");
}
} else if (searchflag) {
if (forwhunt(FALSE, 0) == FALSE)
update(FALSE);
}
/* Setup to process commands. */
lastflag = 0; /* Fake last flags. */
loop:
/* Execute the "command" macro...normally null. */
saveflag = lastflag; /* Preserve lastflag through this. */
execute(META | SPEC | 'C', FALSE, 1);
lastflag = saveflag;
#if TYPEAH && PKCODE
if (typahead()) {
newc = getcmd();
update(FALSE);
do {
fn_t execfunc;
if (c == newc && (execfunc = getbind(c)) != NULL
&& execfunc != insert_newline
&& execfunc != insert_tab)
newc = getcmd();
else
break;
} while (typahead());
c = newc;
} else {
update(FALSE);
c = getcmd();
}
#else
/* Fix up the screen */
update(FALSE);
/* get the next command from the keyboard */
c = getcmd();
#endif
/* if there is something on the command line, clear it */
if (mpresf != FALSE) {
mlerase();
update(FALSE);
#if CLRMSG
if (c == ' ') /* ITS EMACS does this */
goto loop;
#endif
}
f = FALSE;
n = 1;
/* do META-# processing if needed */
basec = c & ~META; /* strip meta char off if there */
if ((c & META) && ((basec >= '0' && basec <= '9') || basec == '-')) {
f = TRUE; /* there is a # arg */
n = 0; /* start with a zero default */
mflag = 1; /* current minus flag */
c = basec; /* strip the META */
while ((c >= '0' && c <= '9') || (c == '-')) {
if (c == '-') {
/* already hit a minus or digit? */
if ((mflag == -1) || (n != 0))
break;
mflag = -1;
} else {
n = n * 10 + (c - '0');
}
if ((n == 0) && (mflag == -1)) /* lonely - */
mlwrite("Arg:");
else
mlwrite("Arg: %d", n * mflag);
c = getcmd(); /* get the next key */
}
n = n * mflag; /* figure in the sign */
}
/* do ^U repeat argument processing */
if (c == reptc) { /* ^U, start argument */
f = TRUE;
n = 4; /* with argument of 4 */
mflag = 0; /* that can be discarded. */
mlwrite("Arg: 4");
while (((c = getcmd()) >= '0' && c <= '9') || c == reptc
|| c == '-') {
if (c == reptc)
if ((n > 0) == ((n * 4) > 0))
n = n * 4;
else
n = 1;
/*
* If dash, and start of argument string, set arg.
* to -1. Otherwise, insert it.
*/
else if (c == '-') {
if (mflag)
break;
n = 0;
mflag = -1;
}
/*
* If first digit entered, replace previous argument
* with digit and set sign. Otherwise, append to arg.
*/
else {
if (!mflag) {
n = 0;
mflag = 1;
}
n = 10 * n + c - '0';
}
mlwrite("Arg: %d",
(mflag >= 0) ? n : (n ? -n : -1));
}
/*
* Make arguments preceded by a minus sign negative and change
* the special argument "^U -" to an effective "^U -1".
*/
if (mflag == -1) {
if (n == 0)
n++;
n = -n;
}
}
/* and execute the command */
execute(c, f, n);
goto loop;
}