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/* vi:ts=4:sw=4
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Read the file "credits.txt" for a list of people who contributed.
* Read the file "uganda.txt" for copying and usage conditions.
*/
/*
* 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 <conio.h>
#include <fcntl.h>
#include <bios.h>
#include <alloc.h>
static int WaitForChar __ARGS((int));
static int change_drive __ARGS((int));
static int cbrk_handler __ARGS(());
typedef struct filelist
{
char_u **file;
int nfiles;
int maxfiles;
} FileList;
static void addfile __ARGS((FileList *, char_u *, int));
static int pstrcmp(); /* __ARGS((char **, char **)); BCC does not like this */
static void strlowcpy __ARGS((char_u *, char_u *));
static int expandpath __ARGS((FileList *, char_u *, 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 */
long
mch_avail_mem(special)
int special;
{
return coreleft();
}
void
vim_delay()
{
delay(500);
}
/*
* this version of remove is not scared by a readonly (backup) file
*
* returns -1 on error, 0 otherwise (just like remove())
*/
int
vim_remove(name)
char_u *name;
{
(void)setperm(name, 0); /* default permissions */
return unlink(name);
}
/*
* mch_write(): write the output buffer to the screen
*/
void
mch_write(s, len)
char_u *s;
int len;
{
char_u *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' || *p == 'r')
{
if (*p == 'H') /* set cursor position */
gotoxy(col, row);
else /* set scroll region */
window(1, row, Columns, col);
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);
}
#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).
*
* return TRUE if a character is available, FALSE otherwise
*/
static int
WaitForChar(msec)
int msec;
{
for (;;)
{
if ((p_biosk ? bioskey(1) : kbhit()) || cbrk_pressed)
return TRUE;
if (msec <= 0)
break;
delay(POLL_SPEED);
msec -= POLL_SPEED;
}
return FALSE;
}
/*
* 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.
*
* return the number of characters obtained
*/
int
GetChars(buf, maxlen, time)
char_u *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 (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;
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
while ((len == 0 || kbhit()) && len < maxlen)
{
switch (c = getch())
{
case 0:
*buf++ = K_NUL;
break;
case 3:
cbrk_pressed = TRUE;
/*FALLTHROUGH*/
default:
*buf++ = c;
}
len++;
}
return len;
}
/*
* return non-zero if a character is available
*/
int
mch_char_avail()
{
return WaitForChar(0);
}
/*
* We have no job control, fake it by starting a new shell.
*/
void
mch_suspend()
{
OUTSTR("new shell started\n");
(void)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();
(void)mch_get_winsize();
}
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_u *name;
{
}
/*
* mch_settitle(): set titlebar of our window.
* Dos console has no title.
*/
void
mch_settitle(title, icon)
char_u *title;
char_u *icon;
{
}
/*
* Restore the window/icon title. (which we don't have)
*/
void
mch_restore_title(which)
int which;
{
}
/*
* Get name of current directory into buffer 'buf' of length 'len' bytes.
* Return OK for success, FAIL for failure.
*/
int
vim_dirname(buf, len)
char_u *buf;
int len;
{
return (getcwd(buf, len) != NULL ? OK : FAIL);
}
/*
* Change default drive (just like _chdrive of Borland C 3.1)
*/
static int
change_drive(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;
}
/*
* get absolute filename into buffer 'buf' of length 'len' bytes
*
* return FAIL for failure, OK otherwise
*/
int
FullName(fname, buf, len)
char_u *fname, *buf;
int len;
{
if (fname == NULL) /* always fail */
{
*buf = NUL;
return FAIL;
}
if (isFullName(fname)) /* allready expanded */
{
STRNCPY(buf, fname, len);
return OK;
}
#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 FAIL;
}
return OK;
#else /* almost the same as FullName in unix.c */
{
int l;
char_u olddir[MAXPATHL];
char_u *p, *q;
int c;
int retval = OK;
*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 = FAIL;
}
else
{
if (*p == ':' || (p > fname && p[-1] == ':'))
q = p + 1;
else
q = p;
c = *q;
*q = NUL;
if (chdir(fname))
retval = FAIL;
else
fname = p + 1;
*q = c;
}
}
if (getcwd(buf, len) == NULL)
{
retval = FAIL;
*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
}
/*
* return TRUE is fname is an absolute path name
*/
int
isFullName(fname)
char_u *fname;
{
return (STRCHR(fname, ':') != NULL);
}
/*
* get file permissions for 'name'
* -1 : error
* else FA_attributes defined in dos.h
*/
long
getperm(name)
char_u *name;
{
int r;
r = _chmod(name, 0, 0); /* get file mode */
return r;
}
/*
* set file permission for 'name' to 'perm'
*
* return FAIL for failure, OK otherwise
*/
int
setperm(name, perm)
char_u *name;
long perm;
{
perm |= FA_ARCH; /* file has changed, set archive bit */
return (_chmod((char *)name, 1, (int)perm) == -1 ? FAIL : OK);
}
/*
* return TRUE if "name" is a directory
* return FALSE if "name" is not a directory
* return -1 for error
*
* beware of a trailing backslash that may have been added by addfile()
*/
int
isdir(name)
char_u *name;
{
int f;
char_u *p;
p = name + strlen(name);
if (p > name)
--p;
if (*p == '\\') /* remove trailing backslash for a moment */
*p = NUL;
else
p = NULL;
f = _chmod(name, 0, 0);
if (p != NULL)
*p = '\\';
if (f == -1)
return -1; /* file does not exist at all */
if ((f & FA_DIREC) == 0)
return FALSE; /* not a directory */
return TRUE;
}
/*
* Careful: mch_windexit() may be called before mch_windinit()!
*/
void
mch_windexit(r)
int r;
{
settmode(0);
stoptermcap();
flushbuf();
ml_close_all(); /* remove all memfiles */
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 */
setvect(0x1B, catch_cbrk); /* install our ctrl-break interrupt */
ctrlbrk(cbrk_handler); /* vim's ctrl-break handler */
if (term_console)
outstr(T_TP); /* set colors */
}
else
{
setcbrk(saved_cbrk); /* restore ctrl-break setting */
setvect(0x24, old_cint); /* restore critical error interrupt */
setvect(0x1B, old_cbrk); /* restore ctrl-break interrupt */
/* restore ctrl-break handler, how ??? */
if (term_console)
normvideo(); /* restore screen colors */
}
}
/*
* set screen mode
* return FAIL for failure, OK otherwise
*/
int
mch_screenmode(arg)
char_u *arg;
{
int mode;
int i;
static char_u *(names[]) = {"BW40", "C40", "BW80", "C80", "MONO", "C4350"};
static int modes[] = { BW40, C40, BW80, C80, MONO, C4350};
mode = -1;
if (isdigit(*arg)) /* mode number given */
mode = atoi((char *)arg);
else
{
for (i = 0; i < sizeof(names) / sizeof(char_u *); ++i)
if (stricmp((char *)names[i], (char *)arg) == 0)
{
mode = modes[i];
break;
}
}
if (mode == -1)
{
EMSG("Unsupported screen mode");
return FAIL;
}
textmode(mode); /* use Borland function */
return OK;
}
/*
* Structure used by Turbo-C/Borland-C to store video parameters.
*/
extern struct text_info _video;
/*
* try to get the real window size
* return FAIL for failure, OK otherwise
*/
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 FAIL;
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 FAIL;
}
check_winsize();
return OK;
}
/*
* 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.... */
}
/*
* call shell, return FAIL for failure, OK otherwise
*/
int
call_shell(cmd, filter, cooked)
char_u *cmd;
int filter; /* if != 0: called by dofilter() */
int cooked;
{
int x;
char_u newcmd[200];
flushbuf();
if (cooked)
settmode(0); /* set to cooked mode */
if (cmd == NULL)
x = system(p_sh);
else
{ /* we use "command" to start the shell, slow but easy */
sprintf(newcmd, "%s /c %s", p_sh, cmd);
x = system(newcmd);
}
outchar('\n');
if (cooked)
settmode(1); /* set to raw mode */
#ifdef WEBB_COMPLETE
if (x && !expand_interactively)
#else
if (x)
#endif
{
outnum((long)x);
outstrn((char_u *)" returned\n");
}
resettitle();
(void)mch_get_winsize(); /* display mode may have been changed */
return (x ? FAIL : OK);
}
/*
* 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_u *f;
int isdir;
{
char_u *p;
if (!fl->file)
{
fl->file = (char_u **)alloc(sizeof(char_u *) * FL_CHUNK);
if (!fl->file)
return;
fl->nfiles = 0;
fl->maxfiles = FL_CHUNK;
}
if (fl->nfiles >= fl->maxfiles)
{
char_u **t;
int i;
t = (char_u **)lalloc((long_u)(sizeof(char_u *) * (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_u **a, **b;
{
return (strcmp(*a, *b));
}
int
has_wildcard(s)
char_u *s;
{
if (s)
for ( ; *s; ++s)
if (*s == '?' || *s == '*')
return TRUE;
return FALSE;
}
static void
strlowcpy(d, s)
char_u *d, *s;
{
while (*s)
*d++ = tolower(*s++);
*d = '\0';
}
static int
expandpath(fl, path, fonly, donly, notf)
FileList *fl;
char_u *path;
int fonly, donly, notf;
{
char_u buf[MAXPATH];
char_u *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;
/* if the file name ends in "*" and does not contain a ".", addd ".*" */
if (e[-1] == '*' && STRCHR(s, '.') == NULL)
{
*e++ = '.';
*e++ = '*';
}
/* 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);
/* ignore "." and ".." */
if (*s != '.' || (s[1] != '\0' && (s[1] != '.' || s[2] != '\0')))
{
strcat(buf, path);
if (!has_wildcard(path))
addfile(fl, buf, (isdir(buf) == TRUE));
else
r |= expandpath(fl, buf, fonly, donly, notf);
}
c = findnext(&fb);
}
qsort(fl->file + lastn, fl->nfiles - lastn, sizeof(char_u *), 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_u **pat;
int *num_file;
char_u ***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]) == TRUE));
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 ? FAIL : OK);
}
void
FreeWild(num, file)
int num;
char_u **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_u *path;
{
if (path[0] == NUL) /* just checking... */
return 0;
if (path[1] == ':') /* has a drive name */
{
if (change_drive(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 */
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.