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/* $OpenBSD: main.c,v 1.25 2003/06/26 23:04:10 vincent Exp $ */
/*
* Mainline.
*/
#include "def.h"
#include "kbd.h"
#include "funmap.h"
#ifndef NO_MACRO
#include "macro.h"
#endif /* NO_MACRO */
#include <err.h>
int thisflag; /* flags, this command */
int lastflag; /* flags, last command */
int curgoal; /* goal column */
int startrow; /* row to start */
BUFFER *curbp; /* current buffer */
BUFFER *bheadp; /* BUFFER listhead */
MGWIN *curwp; /* current window */
MGWIN *wheadp; /* MGWIN listhead */
char pat[NPAT]; /* pattern */
static void edinit(PF);
int
main(int argc, char **argv)
{
char *cp, *init_fcn_name = NULL;
PF init_fcn = NULL;
int o;
while ((o = getopt(argc, argv, "f:")) != -1)
switch (o) {
case 'f':
if (init_fcn_name != NULL)
errx(1, "cannot specify more than one "
"initial function");
init_fcn_name = optarg;
break;
default:
errx(1, "usage: mg [-f <mode>] [files...]");
}
argc -= optind;
argv += optind;
maps_init(); /* Keymaps and modes. */
funmap_init(); /* Functions. */
/*
* This is where we initialize standalone extensions that should
* be loaded dynamically sometime in the future.
*/
{
extern void grep_init(void);
extern void theo_init(void);
grep_init();
theo_init();
mail_init();
}
if (init_fcn_name &&
(init_fcn = name_function(init_fcn_name)) == NULL)
errx(1, "Unknown function `%s'", init_fcn_name);
vtinit(); /* Virtual terminal. */
#ifndef NO_DIR
dirinit(); /* Get current directory. */
#endif /* !NO_DIR */
edinit(init_fcn); /* Buffers, windows. */
ttykeymapinit(); /* Symbols, bindings. */
/*
* doing update() before reading files causes the error messages from
* the file I/O show up on the screen. (and also an extra display of
* the mode line if there are files specified on the command line.)
*/
update();
#ifndef NO_STARTUP
/* user startup file */
if ((cp = startupfile(NULL)) != NULL)
(void)load(cp);
#endif /* !NO_STARTUP */
while (argc > 0) {
if (argv[0][0] == '+' && strlen(argv[0]) >= 2) {
long lval;
char *ep;
errno = 0;
lval = strtoul(&argv[0][1], &ep, 10);
if (argv[0][1] == '\0' || *ep != '\0')
goto notnum;
if ((errno == ERANGE &&
(lval == LONG_MAX || lval == LONG_MIN)) ||
(lval > INT_MAX || lval < INT_MIN))
goto notnum;
startrow = (int)lval;
} else {
notnum:
cp = adjustname(*argv);
if (cp != NULL) {
curbp = findbuffer(cp);
(void)showbuffer(curbp, curwp, 0);
(void)readin(cp);
if (init_fcn_name)
init_fcn(0, 1);
}
}
argc--;
argv++;
}
/* fake last flags */
thisflag = 0;
for (;;) {
#ifndef NO_DPROMPT
if (epresf == KPROMPT)
eerase();
#endif /* !NO_DPROMPT */
if (winch_flag) {
refresh(0, 0);
winch_flag = 0;
}
update();
lastflag = thisflag;
thisflag = 0;
switch (doin()) {
case TRUE:
break;
case ABORT:
ewprintf("Quit");
/* and fall through */
case FALSE:
default:
ttbeep();
#ifndef NO_MACRO
macrodef = FALSE;
#endif /* !NO_MACRO */
}
}
}
/*
* Initialize default buffer and window.
*/
static void
edinit(PF init_fcn)
{
BUFFER *bp;
MGWIN *wp;
bheadp = NULL;
bp = bfind("*scratch*", TRUE); /* Text buffer. */
wp = (MGWIN *)malloc(sizeof(MGWIN)); /* Initial window. */
if (wp == NULL)
panic("Out of memory");
if (bp == NULL || wp == NULL)
panic("edinit");
curbp = bp; /* Current ones. */
wheadp = wp;
curwp = wp;
wp->w_wndp = NULL; /* Initialize window. */
wp->w_bufp = bp;
bp->b_nwnd = 1; /* Displayed. */
wp->w_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 = nrow - 2; /* 2 = mode, echo. */
wp->w_force = 0;
wp->w_flag = WFMODE | WFHARD; /* Full. */
if (init_fcn)
init_fcn(0, 1);
}
/*
* Quit command. If an argument, always quit. Otherwise confirm if a buffer
* has been changed and not written out. Normally bound to "C-X C-C".
*/
/* ARGSUSED */
int
quit(int f, int n)
{
int s;
if ((s = anycb(FALSE)) == ABORT)
return ABORT;
if (s == FALSE
|| eyesno("Some modified buffers exist, really exit") == TRUE) {
vttidy();
#ifdef SYSCLEANUP
SYSCLEANUP;
#endif /* SYSCLEANUP */
exit(GOOD);
}
return TRUE;
}
/*
* User abort. Should be called by any input routine that sees a C-g to abort
* whatever C-g is aborting these days. Currently does nothing.
*/
/* ARGSUSED */
int
ctrlg(int f, int n)
{
return (ABORT);
}
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