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/* $OpenBSD: main.c,v 1.70 2012/12/28 16:12:50 naddy Exp $ */
/* This file is in the public domain. */
/*
* Mainline.
*/
#include "def.h"
#include "kbd.h"
#include "funmap.h"
#include "macro.h"
#include <err.h>
#include <locale.h>
int thisflag; /* flags, this command */
int lastflag; /* flags, last command */
int curgoal; /* goal column */
int startrow; /* row to start */
struct buffer *curbp; /* current buffer */
struct buffer *bheadp; /* BUFFER list head */
struct mgwin *curwp; /* current window */
struct mgwin *wheadp; /* MGWIN listhead */
char pat[NPAT]; /* pattern */
static void edinit(struct buffer *);
static __dead void usage(void);
extern char *__progname;
extern void closetags(void);
static __dead void
usage()
{
fprintf(stderr, "usage: %s [-n] [-f mode] [+number] [file ...]\n",
__progname);
exit(1);
}
int
main(int argc, char **argv)
{
char *cp, *init_fcn_name = NULL;
PF init_fcn = NULL;
int o, i, nfiles;
int nobackups = 0;
struct buffer *bp = NULL;
while ((o = getopt(argc, argv, "nf:")) != -1)
switch (o) {
case 'n':
nobackups = 1;
break;
case 'f':
if (init_fcn_name != NULL)
errx(1, "cannot specify more than one "
"initial function");
init_fcn_name = optarg;
break;
default:
usage();
}
argc -= optind;
argv += optind;
setlocale(LC_CTYPE, "");
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);
extern void cmode_init(void);
extern void dired_init(void);
dired_init();
grep_init();
theo_init();
cmode_init();
}
if (init_fcn_name &&
(init_fcn = name_function(init_fcn_name)) == NULL)
errx(1, "Unknown function `%s'", init_fcn_name);
vtinit(); /* Virtual terminal. */
dirinit(); /* Get current directory. */
edinit(bp); /* 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();
/* user startup file. */
if ((cp = startupfile(NULL)) != NULL)
(void)load(cp);
/*
* Now ensure any default buffer modes from the startup file are
* given to any files opened when parsing the startup file.
* Note *scratch* will also be updated.
*/
for (bp = bheadp; bp != NULL; bp = bp->b_bufp) {
bp->b_flag = defb_flag;
for (i = 0; i <= defb_nmodes; i++) {
bp->b_modes[i] = defb_modes[i];
}
}
/* Force FFOTHARG=1 so that this mode is enabled, not simply toggled */
if (init_fcn)
init_fcn(FFOTHARG, 1);
if (nobackups)
makebkfile(FFARG, 0);
for (nfiles = 0, i = 0; i < argc; i++) {
if (argv[i][0] == '+' && strlen(argv[i]) >= 2) {
long long lval;
const char *errstr;
lval = strtonum(&argv[i][1], INT_MIN, INT_MAX, &errstr);
if (argv[i][1] == '\0' || errstr != NULL)
goto notnum;
startrow = lval;
} else {
notnum:
cp = adjustname(argv[i], FALSE);
if (cp != NULL) {
if (nfiles == 1)
splitwind(0, 1);
if ((curbp = findbuffer(cp)) == NULL) {
vttidy();
errx(1, "Can't find current buffer!");
}
(void)showbuffer(curbp, curwp, 0);
if (readin(cp) != TRUE)
killbuffer(curbp);
else {
/* Ensure enabled, not just toggled */
if (init_fcn_name)
init_fcn(FFOTHARG, 1);
nfiles++;
}
}
}
}
if (nfiles > 2)
listbuffers(0, 1);
/* fake last flags */
thisflag = 0;
for (;;) {
if (epresf == KCLEAR)
eerase();
if (epresf == TRUE)
epresf = KCLEAR;
if (winch_flag) {
do_redraw(0, 0, TRUE);
winch_flag = 0;
}
update();
lastflag = thisflag;
thisflag = 0;
switch (doin()) {
case TRUE:
break;
case ABORT:
ewprintf("Quit");
/* FALLTHRU */
case FALSE:
default:
ttbeep();
macrodef = FALSE;
}
}
}
/*
* Initialize default buffer and window. Default buffer is called *scratch*.
*/
static void
edinit(struct buffer *bp)
{
struct mgwin *wp;
bheadp = NULL;
bp = bfind("*scratch*", TRUE); /* Text buffer. */
if (bp == NULL)
panic("edinit");
wp = new_window(bp);
if (wp == NULL)
panic("edinit: Out of memory");
curbp = bp; /* Current buffer. */
wheadp = wp;
curwp = wp;
wp->w_wndp = NULL; /* Initialize window. */
wp->w_linep = wp->w_dotp = bp->b_headp;
wp->w_ntrows = nrow - 2; /* 2 = mode, echo. */
wp->w_rflag = WFMODE | WFFULL; /* Full. */
}
/*
* 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 == FIOERR || s == UERROR)
return (FALSE);
if (s == FALSE
|| eyesno("Modified buffers exist; really exit") == TRUE) {
vttidy();
closetags();
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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