/* vi:ts=4:sw=4
*
* VIM - Vi IMproved
*
* Code Contributions By: Bram Moolenaar mool@oce.nl
* Tim Thompson twitch!tjt
* Tony Andrews onecom!wldrdg!tony
* G. R. (Fred) Walter watmath!watcgl!grwalter
*/
/*
* msdos.c
*
* MSDOS system-dependent routines.
* A cheap plastic imitation of the amiga dependent code.
* A lot in this file was made by Juergen Weigert (jw).
*/
#include <io.h>
#include "vim.h"
#include "globals.h"
#include "param.h"
#include "proto.h"
#include <fcntl.h>
#include <bios.h>
#include <process.h>
#ifndef DOSGEN
#include <conio.h>
#include <bios.h>
#endif
#ifdef FEPCTRL
#include "fepctrl.h"
#endif
static int int29h = FALSE; /* ken */
static int WaitForChar __ARGS((int));
static int cbrk_handler __ARGS(());
typedef struct filelist
{
char **file;
int nfiles;
int maxfiles;
} FileList;
static void addfile __ARGS((FileList *, char *, int));
static int pstrcmp(); /* __ARGS((char **, char **)); BCC does not like this */
static void strlowcpy __ARGS((char *, char *));
static int expandpath __ARGS((FileList *, char *, int, int, int));
static int cbrk_pressed = FALSE; /* set by ctrl-break interrupt */
static int ctrlc_pressed = FALSE; /* set when ctrl-C or ctrl-break detected */
static int delayed_redraw = FALSE; /* set when ctrl-C detected */
#ifdef DEBUG
/*
* Put two characters in the video buffer without calling BIOS or DOS.
*/
blink(n)
int n;
{
# ifdef DOSGEN
/* do nothing */
# else
char far *p;
static int counter;
p = MK_FP(0xb800, 0x10 + n); /* p points in screen buffer */
*p = counter;
*(p + 1) = counter;
*(p + 2) = counter;
*(p + 3) = counter;
++counter;
# endif /* DOSGEN */
}
#endif
#ifdef DOSGEN
# ifdef FEPCTRL
/*
* eat up a return key just after a kanji
*/
static int savech = 0;
static int got_ret = 0;
int
kbhit()
{
if (!savech)
{
savech = bdos(6, 0xff, 0) & 0xff;
if ((int)p_fsr == 1)
{
if (got_ret && savech)
got_ret = 0;
else if (!got_ret
&& (savech == '\r' || savech == '\n')
&& p_fc && fep_get_mode())
{
got_ret = 1;
savech = 0;
}
}
}
return savech;
}
int
getch1()
{
int ch;
if (savech) {
ch = savech;
savech = 0;
return ch;
}
again:
ch = bdos(7, 0, 0) & 0xff;
if ((int)p_fsr == 1)
{
if (got_ret)
got_ret = 0;
else if (!got_ret
&& (ch == '\r' || ch == '\n')
&& p_fc && fep_get_mode())
{
got_ret = 1;
goto again;
}
}
return ch;
}
int
getch()
{
int ch, cn, i;
if ((int)p_fsr == 2) {
ch = getch1();
if (p_fc && fep_get_mode()) {
for (i = 0; i < 20; i++) {
cn = kbhit();
if (cn)
break;
}
if (cn == '\r' || cn == '\n')
getch1();
}
return ch;
}
return getch1();
}
#else /*FEPCTRL*/
static int savech = 0;
int
kbhit()
{
if (!savech)
savech = bdos(6, 0xff, 0) & 0xff;
return savech;
}
int
getch()
{
int ch;
if (savech) {
ch = savech;
savech = 0;
return ch;
}
return bdos(7, 0, 0) & 0xff;
}
# endif /*FEPCTRL*/
#endif /*DOSGEN*/
void
vim_delay()
{
#ifdef DOSGEN
sleep(1);
#else
delay(500);
#endif
}
/*
* this version of remove is not scared by a readonly (backup) file
*/
int
vim_remove(name)
char *name;
{
setperm(name, 0); /* default permissions */
return unlink(name);
}
/*
* mch_write(): write the output buffer to the screen
*/
void
mch_write(s, len)
char *s;
int len;
{
#ifndef DOSGEN
char *p;
int row, col;
if (term_console) /* translate ESC | sequences into bios calls */
while (len--)
{
if (s[0] == '\n')
putch('\r');
else if (s[0] == ESC && len > 1 && s[1] == '|')
{
switch (s[2])
{
case 'J': clrscr();
goto got3;
case 'K': clreol();
goto got3;
case 'L': insline();
goto got3;
case 'M': delline();
got3: s += 3;
len -= 2;
continue;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9': p = s + 2;
row = getdigits(&p); /* no check for length! */
if (p > s + len)
break;
if (*p == ';')
{
++p;
col = getdigits(&p); /* no check for length! */
if (p > s + len)
break;
if (*p == 'H')
{
gotoxy(col, row);
len -= p - s;
s = p + 1;
continue;
}
}
else if (*p == 'm')
{
if (row == 0)
normvideo();
else
textattr(row);
len -= p - s;
s = p + 1;
continue;
}
}
}
putch(*s++);
}
else
write(1, s, (unsigned)len);
#else
if (int29h) { /* ken */
# if defined(__BORLANDC__)
asm lds si, s
asm mov cx, len
loop:
asm lodsb
asm int 29h
asm loop loop
# else /* __BORLANDC__ */
union REGS regs;
while (len--) {
regs.x.ax = *s++;
int86(0x29, ®s, ®s);
}
# endif /* __BORLANDC__ */
} else {
while (len--) {
bdos(6, *s++, 0);
}
}
#endif
}
#define POLL_SPEED 10 /* milliseconds between polls */
/*
* Simulate WaitForChar() by slowly polling with bioskey(1) or kbhit().
*
* If Vim should work over the serial line after a 'ctty com1' we must use
* kbhit() and getch(). (jw)
* Usually kbhit() is not used, because then CTRL-C and CTRL-P
* will be catched by DOS (mool).
*/
static int
WaitForChar(msec)
int msec;
{
#ifndef DOSGEN
do
{
if ((p_biosk ? bioskey(1) : kbhit()) || cbrk_pressed)
return 1;
delay(POLL_SPEED);
msec -= POLL_SPEED;
}
while (msec >= 0);
#endif
return 0;
}
/*
* GetChars(): low level input funcion.
* Get a characters from the keyboard.
* If time == 0 do not wait for characters.
* If time == n wait a short time for characters.
* If time == -1 wait forever for characters.
*/
int
GetChars(buf, maxlen, time)
char *buf;
int maxlen;
int time;
{
int len = 0;
int c;
/*
* if we got a ctrl-C when we were busy, there will be a "^C" somewhere
* on the sceen, so we need to redisplay it.
*/
if (delayed_redraw)
{
delayed_redraw = FALSE;
updateScreen(CLEAR);
setcursor();
flushbuf();
}
if (time >= 0)
{
if (time == 0) /* don't know if time == 0 is allowed */
time = 1;
if (WaitForChar(time) == 0) /* no character available */
return 0;
}
else /* time == -1 */
{
/*
* If there is no character available within 2 seconds (default)
* write the autoscript file to disk
*/
if (WaitForChar((int)p_ut) == 0)
updatescript(0);
}
/*
* Try to read as many characters as there are.
* Works for the controlling tty only.
*/
--maxlen; /* may get two chars at once */
/*
* we will get at least one key. Get more if they are available
* After a ctrl-break we have to read a 0 (!) from the buffer.
* bioskey(1) will return 0 if no key is available and when a
* ctrl-break was typed. When ctrl-break is hit, this does not always
* implies a key hit.
*/
cbrk_pressed = FALSE;
#ifndef DOSGEN
if (p_biosk)
while ((len == 0 || bioskey(1)) && len < maxlen)
{
c = bioskey(0); /* get the key */
if (c == 0) /* ctrl-break */
c = 3; /* return a CTRL-C */
if ((c & 0xff) == 0)
{
if (c == 0x0300) /* CTRL-@ is 0x0300, translated into K_ZERO */
c = K_ZERO;
else /* extended key code 0xnn00 translated into K_NUL, nn */
{
c >>= 8;
*buf++ = K_NUL;
++len;
}
}
*buf++ = c;
len++;
}
else
#endif /* DOSGEN */
while (len == 0 || kbhit())
{
if (len >= maxlen)
break;
#ifdef JP
#define IsSJISkanji(c) ((c)>=0x81 && (c)<=0x9f || (c)>=0xe0 && (c)<=0xfc)
if (len >= maxlen - 1 && IsSJISkanji(c))
break;
#endif
switch (c = getch())
{
case 0:
*buf++ = K_ZERO; /* ken */
break;
case 3:
cbrk_pressed = TRUE;
/*FALLTHROUGH*/
default:
*buf++ = c;
}
len++;
}
return len;
}
/*
* We have no job control, fake it by starting a new shell.
*/
void
mch_suspend()
{
outstr("new shell started\n");
call_shell(NULL, 0, TRUE);
}
extern int _fmode;
/*
* we do not use windows, there is not much to do here
*/
void
mch_windinit()
{
_fmode = O_BINARY; /* we do our own CR-LF translation */
flushbuf();
mch_get_winsize();
{
int v_stat;
v_stat = ioctl(1, 0);
ioctl(1, 1, (void *)(v_stat | 0x0020));
if ((ioctl(1, 0) & 0x0090) == 0x0090) {
int29h = TRUE;
}
ioctl(1, 1, (void *)(v_stat));
}
#ifdef FEPCTRL
if (p_fc)
fep_init();
#endif
}
void
check_win(argc, argv)
int argc;
char **argv;
{
if (!isatty(0) || !isatty(1))
{
fprintf(stderr, "VIM: no controlling terminal\n");
exit(2);
}
/*
* In some cases with DOS 6.0 on a NEC notebook there is a 12 seconds
* delay when starting up that can be avoided by the next two lines.
* Don't ask me why!
* This could be fixed by removing setver.sys from config.sys. Forget it.
gotoxy(1,1);
cputs(" ");
*/
}
/*
* fname_case(): Set the case of the filename, if it already exists.
* msdos filesystem is far to primitive for that. do nothing.
*/
void
fname_case(name)
char *name;
{
}
/*
* settitle(): set titlebar of our window.
* Dos console has no title.
*/
void
settitle(str)
char *str;
{
}
void
resettitle()
{
}
/*
* Get name of current directory into buffer 'buf' of length 'len' bytes.
* Return non-zero for success.
*/
int
dirname(buf, len)
char *buf;
int len;
{
return (getcwd(buf, len) != NULL);
}
/*
* Change default drive (for Turbo C, Borland C already has it)
*/
#ifndef __BORLANDC__
int
_chdrive(drive)
int drive;
{
unsigned dummy;
union REGS regs;
regs.h.ah = 0x0e;
regs.h.dl = drive - 1;
intdos(®s, ®s); /* set default drive */
regs.h.ah = 0x19;
intdos(®s, ®s); /* get default drive */
if (regs.h.al == drive - 1)
return 0;
else
return -1;
}
#endif
/*
* get absolute filename into buffer 'buf' of length 'len' bytes
*/
int
FullName(fname, buf, len)
char *fname, *buf;
int len;
{
if (fname == NULL) /* always fail */
return 0;
#ifdef __BORLANDC__ /* the old Turbo C does not have this */
if (_fullpath(buf, fname, len) == NULL)
{
strncpy(buf, fname, len); /* failed, use the relative path name */
return 0;
}
return 1;
#else /* almost the same as FullName in unix.c */
{
int l;
char olddir[MAXPATHL];
char *p, *q;
int c;
int retval = 1;
*buf = 0;
/*
* change to the directory for a moment,
* and then do the getwd() (and get back to where we were).
* This will get the correct path name with "../" things.
*/
p = strrchr(fname, '/');
q = strrchr(fname, '\\');
if (q && (p == NULL || q > p))
p = q;
q = strrchr(fname, ':');
if (q && (p == NULL || q > p))
p = q;
if (p != NULL)
{
if (getcwd(olddir, MAXPATHL) == NULL)
{
p = NULL; /* can't get current dir: don't chdir */
retval = 0;
}
else
{
if (*p == ':' || (p > fname && p[-1] == ':'))
q = p + 1;
else
q = p;
c = *q;
*q = NUL;
if (chdir(fname))
retval = 0;
else
fname = p + 1;
*q = c;
}
}
if (getcwd(buf, len) == NULL)
{
retval = 0;
*buf = NUL;
}
l = strlen(buf);
if (l && buf[l - 1] != '/' && buf[l - 1] != '\\')
strcat(buf, "\\");
if (p)
chdir(olddir);
strcat(buf, fname);
return retval;
}
#endif
}
/*
* get file permissions for 'name'
* -1 : error
* else FA_attributes defined in dos.h
*/
long
getperm(name)
char *name;
{
int r;
r = _chmod(name, 0, 0); /* get file mode */
return r;
}
/*
* set file permission for 'name' to 'perm'
*/
int
setperm(name, perm)
char *name;
long perm;
{
perm &= ~FA_ARCH;
return _chmod(name, 1, (int)perm);
}
/*
* check if "name" is a directory
*/
int
isdir(name)
char *name;
{
int f;
f = _chmod(name, 0, 0);
if (f == -1)
return -1; /* file does not exist at all */
if ((f & FA_DIREC) == 0)
return 0; /* not a directory */
return 1;
}
/*
* Careful: mch_windexit() may be called before mch_windinit()!
*/
void
mch_windexit(r)
int r;
{
#ifdef FEPCTRL
if (p_fc)
fep_term();
#endif
settmode(0);
stoptermcap();
flushbuf();
stopscript(); /* remove autoscript file */
exit(r);
}
/*
* function for ctrl-break interrupt
*/
void interrupt
catch_cbrk()
{
cbrk_pressed = TRUE;
ctrlc_pressed = TRUE;
}
/*
* ctrl-break handler for DOS. Never called when a ctrl-break is typed, because
* we catch interrupt 1b. If you type ctrl-C while Vim is waiting for a
* character this function is not called. When a ctrl-C is typed while Vim is
* busy this function may be called. By that time a ^C has been displayed on
* the screen, so we have to redisplay the screen. We can't do that here,
* because we may be called by DOS. The redraw is in GetChars().
*/
static int
cbrk_handler()
{
delayed_redraw = TRUE;
return 1; /* resume operation after ctrl-break */
}
/*
* function for critical error interrupt
* For DOS 1 and 2 return 0 (Ignore).
* For DOS 3 and later return 3 (Fail)
*/
void interrupt
catch_cint(bp, di, si, ds, es, dx, cx, bx, ax)
unsigned bp, di, si, ds, es, dx, cx, bx, ax;
{
ax = (ax & 0xff00); /* set AL to 0 */
if (_osmajor >= 3)
ax |= 3; /* set AL to 3 */
}
/*
* set the tty in (raw) ? "raw" : "cooked" mode
*
* Does not change the tty, as bioskey() and kbhit() work raw all the time.
*/
extern void interrupt CINT_FUNC();
void
mch_settmode(raw)
int raw;
{
static int saved_cbrk;
static void interrupt (*old_cint)();
static void interrupt (*old_cbrk)();
if (raw)
{
saved_cbrk = getcbrk(); /* save old ctrl-break setting */
setcbrk(0); /* do not check for ctrl-break */
old_cint = getvect(0x24); /* save old critical error interrupt */
setvect(0x24, catch_cint); /* install our critical error interrupt */
old_cbrk = getvect(0x1B); /* save old ctrl-break interrupt */
#ifndef DOSGEN
setvect(0x1B, catch_cbrk); /* install our ctrl-break interrupt */
#endif
ctrlbrk(cbrk_handler); /* vim's ctrl-break handler */
#ifndef DOSGEN
if (term_console)
outstr(T_TP); /* set colors */
#endif
}
else
{
setcbrk(saved_cbrk); /* restore ctrl-break setting */
setvect(0x24, old_cint); /* restore critical error interrupt */
#ifndef DOSGEN
setvect(0x1B, old_cbrk); /* restore ctrl-break interrupt */
/* restore ctrl-break handler, how ??? */
if (term_console)
normvideo(); /* restore screen colors */
#endif
}
}
#ifdef DOSGEN
int
mch_get_winsize()
{
int old_Rows = Rows;
int old_Columns = Columns;
char *p;
extern char *getenv();
Columns = 0;
Rows = 0;
if ((p = (char *)getenv("LINES")))
Rows = atoi(p);
if ((p = (char *)getenv("COLUMNS")))
Columns = atoi(p);
#ifdef TERMCAP
if (Columns == 0 || Rows == 0)
{
extern void getlinecol();
getlinecol();
}
#endif
if (Columns <= 0 || Rows <= 0)
{
Columns = old_Columns;
Rows = old_Rows;
Rows_max = Rows;
return 1;
}
Rows_max = Rows;
check_winsize();
script_winsize();
return 0;
}
void
set_window()
{
/* do nothing */
}
void
mch_set_winsize()
{
/* do nothing */
}
#else /* DOSGEN */
/*
* Structure used by Turbo-C/Borland-C to store video parameters.
*/
extern struct text_info _video;
int
mch_get_winsize()
{
int i;
struct text_info ti;
/*
* The screenwidth is returned by the BIOS OK.
* The screenheight is in a location in the bios RAM, if the display is EGA or VGA.
*/
if (!term_console)
return 1;
gettextinfo(&ti);
Columns = ti.screenwidth;
Rows = ti.screenheight;
if (ti.currmode > 10)
Rows = *(char far *)MK_FP(0x40, 0x84) + 1;
set_window();
if (Columns < 5 || Columns > MAX_COLUMNS ||
Rows < 2 || Rows > MAX_COLUMNS)
{
/* these values are overwritten by termcap size or default */
Columns = 80;
Rows = 25;
return 1;
}
Rows_max = Rows; /* remember physical max height */
check_winsize();
script_winsize();
return 0;
}
/*
* Set the active window for delline/insline.
*/
void
set_window()
{
_video.screenheight = Rows;
window(1, 1, Columns, Rows);
}
void
mch_set_winsize()
{
/* should try to set the window size to Rows and Columns */
/* may involve switching display mode.... */
}
#endif /* DOSGEN */
int
call_shell(cmd, filter, cooked)
char *cmd;
int filter; /* if != 0: called by dofilter() */
int cooked;
{
int x;
char newcmd[200];
flushbuf();
#ifdef FEPCTRL
if (p_fc)
fep_term();
#endif
if (cooked)
settmode(0); /* set to cooked mode */
if (cmd == NULL)
x = spawnlp(P_WAIT, p_sh, p_sh, NULL);
else
{ /* we use "command" to start the shell, slow but easy */
sprintf(newcmd, "%cc", get_switchar());
x = spawnlp(P_WAIT, p_sh, p_sh, newcmd, cmd, NULL);
}
outchar('\n');
if (cooked)
settmode(1); /* set to raw mode */
if (x)
{
smsg("%d returned", x);
outchar('\n');
}
#ifdef FEPCTRL
if (p_fc)
fep_init();
#endif
resettitle();
return x;
}
/*
* check for an "interrupt signal": CTRL-break or CTRL-C
*/
void
breakcheck()
{
if (ctrlc_pressed)
{
ctrlc_pressed = FALSE;
got_int = TRUE;
}
}
#define FL_CHUNK 32
static void
addfile(fl, f, isdir)
FileList *fl;
char *f;
int isdir;
{
char *p;
if (!fl->file)
{
fl->file = (char **)alloc(sizeof(char *) * FL_CHUNK);
if (!fl->file)
return;
fl->nfiles = 0;
fl->maxfiles = FL_CHUNK;
}
if (fl->nfiles >= fl->maxfiles)
{
char **t;
int i;
t = (char **)lalloc(sizeof(char *) * (fl->maxfiles + FL_CHUNK), TRUE);
if (!t)
return;
for (i = fl->nfiles - 1; i >= 0; i--)
t[i] = fl->file[i];
free(fl->file);
fl->file = t;
fl->maxfiles += FL_CHUNK;
}
p = alloc((unsigned)(strlen(f) + 1 + isdir));
if (p)
{
strcpy(p, f);
if (isdir)
strcat(p, "\\");
}
fl->file[fl->nfiles++] = p;
}
static int
pstrcmp(a, b)
char **a, **b;
{
return (strcmp(*a, *b));
}
int
has_wildcard(s)
char *s;
{
if (s)
for ( ; *s; ++s)
if (*s == '?' || *s == '*')
return 1;
return 0;
}
static void
strlowcpy(d, s)
char *d, *s;
{
while (*s)
*d++ = tolower(*s++);
*d = '\0';
}
static int
expandpath(fl, path, fonly, donly, notf)
FileList *fl;
char *path;
int fonly, donly, notf;
{
char buf[MAXPATH];
char *p, *s, *e;
int lastn, c, r;
struct ffblk fb;
lastn = fl->nfiles;
/*
* Find the first part in the path name that contains a wildcard.
* Copy it into buf, including the preceding characters.
*/
p = buf;
s = NULL;
e = NULL;
while (*path)
{
if (*path == '\\' || *path == ':' || *path == '/')
{
if (e)
break;
else
s = p;
}
if (*path == '*' || *path == '?')
e = p;
*p++ = *path++;
}
e = p;
if (s)
s++;
else
s = buf;
/* now we have one wildcard component between s and e */
*e = '\0';
r = 0;
/* If we are expanding wildcards we try both files and directories */
if ((c = findfirst(buf, &fb, (*path || !notf) ? FA_DIREC : 0)) != 0)
{
/* not found */
strcpy(e, path);
if (notf)
addfile(fl, buf, FALSE);
return 1; /* unexpanded or empty */
}
while (!c)
{
strlowcpy(s, fb.ff_name);
if (*s != '.' || (s[1] != '\0' && (s[1] != '.' || s[2] != '\0')))
{
strcat(buf, path);
if (!has_wildcard(path))
addfile(fl, buf, (isdir(buf) > 0));
else
r |= expandpath(fl, buf, fonly, donly, notf);
}
c = findnext(&fb);
}
qsort(fl->file + lastn, fl->nfiles - lastn, sizeof(char *), pstrcmp);
return r;
}
/*
* MSDOS rebuilt of Scott Ballantynes ExpandWildCard for amiga/arp.
* jw
*/
int
ExpandWildCards(num_pat, pat, num_file, file, files_only, list_notfound)
int num_pat;
char **pat;
int *num_file;
char ***file;
int files_only, list_notfound;
{
int i, r = 0;
FileList f;
f.file = NULL;
f.nfiles = 0;
for (i = 0; i < num_pat; i++)
{
if (!has_wildcard(pat[i]))
addfile(&f, pat[i], files_only ? FALSE : (isdir(pat[i]) > 0));
else
r |= expandpath(&f, pat[i], files_only, 0, list_notfound);
}
if (r == 0)
{
*num_file = f.nfiles;
*file = f.file;
}
else
{
*num_file = 0;
*file = NULL;
}
return r;
}
void
FreeWild(num, file)
int num;
char **file;
{
if (file == NULL || num <= 0)
return;
while (num--)
free(file[num]);
free(file);
}
/*
* The normal chdir() does not change the default drive.
* This one does.
*/
#undef chdir
int
vim_chdir(path)
char *path;
{
if (path[0] == NUL) /* just checking... */
return 0;
if (path[1] == ':') /* has a drive name */
{
if (_chdrive(toupper(path[0]) - 'A' + 1))
return -1; /* invalid drive name */
path += 2;
}
if (*path == NUL) /* drive name only */
return 0;
return chdir(path); /* let the normal chdir() do the rest */
}
int
get_switchar()
{
union REGS regs;
if (_osmajor >= 5)
return '/';
regs.h.ah = 0x37;
regs.h.al = 0;
intdos(®s, ®s);
return regs.h.dl;
}
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