www.pudn.com > vim53src.zip > os_msdos.c
/* vi:set ts=8 sts=4 sw=4:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
*/
/*
* os_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).
*
* DJGPP changes by Gert van Antwerpen
* Faster text screens by John Lange (jlange@zilker.net)
*
*/
#include
#include "vim.h"
#include
#ifdef HAVE_FCNTL_H
# include
#endif
#include
#ifdef DJGPP
# include
# include
# include
#else
# include
#endif
#if defined(DJGPP) || defined(PROTO)
# define _cdecl /* DJGPP doesn't have this */
#endif
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 USE_MOUSE
static int mouse_avail = FALSE; /* mouse present */
static int mouse_active; /* mouse enabled */
static int mouse_hidden; /* mouse not shown */
static int mouse_click = -1; /* mouse status */
static int mouse_last_click = -1; /* previous status at click */
static int mouse_x = -1; /* mouse x coodinate */
static int mouse_y = -1; /* mouse y coodinate */
static long mouse_click_time = 0; /* biostime() of last click */
static int mouse_click_count = 0; /* count for multi-clicks */
static int mouse_click_x = 0; /* x of previous mouse click */
static int mouse_click_y = 0; /* y of previous mouse click */
static linenr_t mouse_topline = 0; /* topline at previous mouse click */
static int mouse_x_div = 8; /* column = x coord / mouse_x_div */
static int mouse_y_div = 8; /* line = y coord / mouse_y_div */
#endif
#define BIOSTICK 55 /* biostime() increases one tick about
every 55 msec */
#ifdef DJGPP
/*
* For DJGPP, use our own functions for fast text screens. JML 1/18/98
*/
unsigned long S_ulScreenBase = 0xb8000;
unsigned short S_uiAttribute = 7 << 8;
int S_iCurrentRow = 0; /* These are 0 offset */
int S_iCurrentColumn = 0;
int S_iLeft = 0; /* These are 1 offset */
int S_iTop = 0;
int S_iRight = 0;
int S_iBottom = 0;
short S_selVideo; /* Selector for DJGPP direct video transfers */
static void
mygotoxy(int x, int y)
{
S_iCurrentRow = y - 1;
S_iCurrentColumn = x - 1;
gotoxy(x,y); /* set cursor position */
}
static void
myscroll(void)
{
short iRow, iColumn;
unsigned short uiValue;
/* Copy the screen */
for (iRow = S_iTop; iRow < S_iBottom; iRow++)
movedata(S_selVideo, (iRow * Columns) << 1,
S_selVideo, ((iRow - 1) * Columns) << 1,
(S_iRight - S_iLeft + 1) << 1);
/* Clear the bottom row */
uiValue = S_uiAttribute | ' ';
for (iColumn = S_iLeft - 1; iColumn < S_iRight; iColumn++)
_dosmemputw(&uiValue, 1, S_ulScreenBase
+ (S_iBottom - 1) * (Columns << 1) + (iColumn << 1));
}
static int
myputch(int iChar)
{
unsigned int *puiLocation;
unsigned short uiValue;
if (iChar == '\n')
{
if (S_iCurrentRow >= S_iBottom - S_iTop)
myscroll();
else
mygotoxy(S_iLeft, S_iCurrentRow + 2);
}
else if (iChar == '\r')
mygotoxy(S_iLeft, S_iCurrentRow + 1);
else if (iChar == '\b')
mygotoxy(S_iCurrentColumn, S_iCurrentRow + 1);
else if (iChar == 7)
{
sound(440); /* short beep */
delay(200);
nosound();
}
else
{
uiValue = S_uiAttribute | (unsigned char)iChar;
_dosmemputw(&uiValue, 1, S_ulScreenBase
+ S_iCurrentRow * (Columns << 1) + (S_iCurrentColumn << 1));
S_iCurrentColumn++;
if (S_iCurrentColumn >= S_iRight && S_iCurrentRow >= S_iBottom - S_iTop)
{
myscroll();
mygotoxy(S_iLeft, S_iCurrentRow + 2);
}
else
mygotoxy(S_iCurrentColumn + 1, S_iCurrentRow + 1);
}
return 0;
}
static void
mywindow(int iLeft, int iTop, int iRight, int iBottom)
{
S_iLeft = iLeft;
S_iTop = iTop;
S_iRight = iRight;
S_iBottom = iBottom;
window(iLeft, iTop, iRight, iBottom);
}
static void
mytextinit(struct text_info *pTextinfo)
{
S_selVideo = __dpmi_segment_to_descriptor(S_ulScreenBase >> 4);
S_uiAttribute = pTextinfo->normattr << 8;
mywindow(1, 1, Columns, Rows);
}
static void
get_screenbase(void)
{
static union REGS regs;
/* old Hercules grafic card has different base address (Macewicz) */
regs.h.ah = 0x0f;
(void)int86(0x10, ®s, ®s); /* int 10 0f */
if (regs.h.al == 0x07) /* video mode 7 -- hercules mono */
S_ulScreenBase = 0xb0000;
else
S_ulScreenBase = 0xb8000;
}
static void
mynormvideo(void)
{
S_uiAttribute = 0x700;
textbackground(0); /*for delline() etc*/
}
static void
mytextattr(int iAttribute)
{
S_uiAttribute = (unsigned short)iAttribute << 8;
iAttribute >>= 4;
if (iAttribute < 8)
textbackground(iAttribute); /*for delline() etc*/
else
textbackground(0);
}
static void
mytextcolor(int iTextColor)
{
S_uiAttribute = (unsigned short)((S_uiAttribute & 0xf000)
| (unsigned short)iTextColor << 8);
textcolor(iTextColor); /*for delline() etc*/
}
static void
mytextbackground(int iBkgColor)
{
S_uiAttribute = (unsigned short)((S_uiAttribute & 0x0f00)
| (unsigned short)(iBkgColor << 12));
if (iBkgColor < 8)
textbackground(iBkgColor); /*for delline() etc*/
else
textbackground(0);
}
#else
# define mygotoxy gotoxy
# define myputch putch
# define myscroll scroll
# define mywindow window
# define mynormvideo normvideo
# define mytextattr textattr
# define mytextcolor textcolor
# define mytextbackground textbackground
#endif
/*
* Save/restore the shape of the cursor.
* call with FALSE to save, TRUE to restore
*/
static void
mch_restore_cursor_shape(int restore)
{
static union REGS regs;
static int saved = FALSE;
if (restore)
{
if (saved)
regs.h.ah = 0x01; /*Set Cursor*/
else
return;
}
else
{
regs.h.ah = 0x03; /*Get Cursor*/
regs.h.bh = 0x00; /*Page */
saved = TRUE;
}
(void)int86(0x10, ®s, ®s);
}
/*
* Set the shape of the cursor.
* 'thickness' can be from 0 (thin) to 7 (block)
*/
static void
mch_set_cursor_shape(int thickness)
{
union REGS regs;
regs.h.ch = 7 - thickness; /*Starting Line*/
regs.h.cl = 7; /*Ending Line*/
regs.h.ah = 0x01; /*Set Cursor*/
(void)int86(0x10, ®s, ®s);
}
void
mch_update_cursor(void)
{
int idx;
int thickness;
/*
* How the cursor is drawn depends on the current mode.
*/
idx = get_cursor_idx();
if (cursor_table[idx].shape == SHAPE_BLOCK)
thickness = 7;
else
thickness = (7 * cursor_table[idx].percentage + 90) / 100;
mch_set_cursor_shape(thickness);
}
long_u
mch_avail_mem(int special)
{
#ifdef DJGPP
return _go32_dpmi_remaining_virtual_memory();
#else
return coreleft();
#endif
}
#ifdef USE_MOUSE
/*
* Set area where mouse can be moved to: The whole screen.
* Rows must be valid when calling!
*/
static void
mouse_area(void)
{
union REGS regs;
int mouse_y_max; /* maximum mouse y coord */
if (mouse_avail)
{
mouse_y_max = Rows * mouse_y_div - 1;
if (mouse_y_max < 199) /* is this needed? */
mouse_y_max = 199;
regs.x.cx = 0; /* mouse visible between cx and dx */
regs.x.dx = 639;
regs.x.ax = 7;
(void)int86(0x33, ®s, ®s);
regs.x.cx = 0; /* mouse visible between cx and dx */
regs.x.dx = mouse_y_max;
regs.x.ax = 8;
(void)int86(0x33, ®s, ®s);
}
}
static void
show_mouse(int on)
{
static int was_on = FALSE;
union REGS regs;
if (mouse_avail)
{
if (!mouse_active || mouse_hidden)
on = FALSE;
/*
* Careful: Each switch on must be compensated by exactly one switch
* off
*/
if (on && !was_on || !on && was_on)
{
was_on = on;
regs.x.ax = on ? 1 : 2;
int86(0x33, ®s, ®s); /* show mouse */
if (on)
mouse_area();
}
}
}
#endif
#ifdef DJGPP
/*
* DJGPP provides a kbhit() function that goes to the BIOS instead of DOS.
* This doesn't work for terminals connected to a serial port.
* Redefine kbhit() here to make it work.
*/
static int
vim_kbhit(void)
{
union REGS regs;
regs.h.ah = 0x0b;
(void)intdos(®s, ®s);
return regs.h.al;
}
#ifdef kbhit
# undef kbhit /* might have been defined in conio.h */
#endif
#define kbhit() vim_kbhit()
#endif
/*
* 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
*/
#define FOREVER 1999999999L
static int
WaitForChar(long msec)
{
union REGS regs;
long starttime;
int x, y;
starttime = biostime(0, 0L);
for (;;)
{
#ifdef USE_MOUSE
long clicktime;
static int last_status = 0;
if (mouse_avail && mouse_active && mouse_click < 0)
{
regs.x.ax = 3;
int86(0x33, ®s, ®s); /* check mouse status */
/* only recognize button-down and button-up event */
x = regs.x.cx / mouse_x_div;
y = regs.x.dx / mouse_y_div;
if ((last_status == 0) != (regs.x.bx == 0))
{
if (last_status) /* button up */
mouse_click = MOUSE_RELEASE;
else /* button down */
{
/*
* Translate MSDOS mouse events to Vim mouse events.
* TODO: should handle middle mouse button, by pressing
* left and right at the same time.
*/
if (regs.x.bx & MSDOS_MOUSE_LEFT)
mouse_click = MOUSE_LEFT;
else if (regs.x.bx & MSDOS_MOUSE_RIGHT)
mouse_click = MOUSE_RIGHT;
else if (regs.x.bx & MSDOS_MOUSE_MIDDLE)
mouse_click = MOUSE_MIDDLE;
/*
* Find out if this is a multi-click
*/
clicktime = biostime(0, 0L);
if (mouse_click_x == x && mouse_click_y == y &&
mouse_topline == curwin->w_topline &&
mouse_click_count != 4 &&
mouse_click == mouse_last_click &&
clicktime < mouse_click_time + p_mouset / BIOSTICK)
++mouse_click_count;
else
mouse_click_count = 1;
mouse_click_time = clicktime;
mouse_last_click = mouse_click;
mouse_click_x = x;
mouse_click_y = y;
mouse_topline = curwin->w_topline;
SET_NUM_MOUSE_CLICKS(mouse_click, mouse_click_count);
}
}
else if (last_status && (x != mouse_x || y != mouse_y))
mouse_click = MOUSE_DRAG;
last_status = regs.x.bx;
if (mouse_hidden && mouse_x >= 0 && (mouse_x != x || mouse_y != y))
{
mouse_hidden = FALSE;
show_mouse(TRUE);
}
mouse_x = x;
mouse_y = y;
}
#endif
if ((p_biosk ? bioskey(1) : kbhit()) || cbrk_pressed
#ifdef USE_MOUSE
|| mouse_click >= 0
#endif
)
return TRUE;
/*
* Use biostime() to wait until our time is done.
* We busy-wait here. Unfortunately, delay() and usleep() have been
* reported to give problems with the original Windows 95. This is
* fixed in service pack 1, but not everybody installed that.
*/
if (msec != FOREVER && biostime(0, 0L) > starttime + msec / BIOSTICK)
break;
}
return FALSE;
}
/*
* don't do anything for about "msec" msec
*/
void
mch_delay(
long msec,
int ignoreinput)
{
long starttime;
if (ignoreinput)
{
/*
* We busy-wait here. Unfortunately, delay() and usleep() have been
* reported to give problems with the original Windows 95. This is
* fixed in service pack 1, but not everybody installed that.
*/
starttime = biostime(0, 0L);
while (biostime(0, 0L) < starttime + msec / BIOSTICK)
;
}
else
WaitForChar(msec);
}
/*
* this version of remove is not scared by a readonly (backup) file
*
* returns -1 on error, 0 otherwise (just like remove())
*/
int
mch_remove(char_u *name)
{
(void)mch_setperm(name, 0); /* default permissions */
return unlink((char *)name);
}
/*
* mch_write(): write the output buffer to the screen
*/
void
mch_write(
char_u *s,
int len)
{
char_u *p;
int row, col;
if (term_console) /* translate ESC | sequences into bios calls */
while (len--)
{
if (p_wd) /* testing: wait a bit for each char */
WaitForChar(p_wd);
if (s[0] == '\n')
myputch('\r');
else if (s[0] == ESC && len > 1 && s[1] == '|')
{
switch (s[2])
{
#ifdef DJGPP
case 'B': ScreenVisualBell();
goto got3;
#endif
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 */
mygotoxy(col, row);
else /* set scroll region */
mywindow(1, row, Columns, col);
len -= p - s;
s = p + 1;
continue;
}
}
else if (*p == 'm' || *p == 'f' || *p == 'b')
{
if (*p == 'm') /* set color */
{
if (row == 0)
mynormvideo();/* reset color */
else
mytextattr(row);
}
else if (*p == 'f') /* set foreground color */
mytextcolor(row);
else /* set background color */
mytextbackground(row);
len -= p - s;
s = p + 1;
continue;
}
}
}
myputch(*s++);
}
else
write(1, s, (unsigned)len);
}
/*
* mch_inchar(): 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
mch_inchar(
char_u *buf,
int maxlen,
long time)
{
int len = 0;
int c;
static int nextchar = 0; /* may keep character when maxlen == 1 */
/*
* 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;
update_screen(CLEAR);
setcursor();
out_flush();
}
/* return remaining character from last call */
if (nextchar)
{
*buf = nextchar;
nextchar = 0;
return 1;
}
#ifdef USE_MOUSE
if (time != 0)
show_mouse(TRUE);
#endif
if (time >= 0)
{
if (WaitForChar(time) == 0) /* no character available */
{
#ifdef USE_MOUSE
show_mouse(FALSE);
#endif
return 0;
}
}
else /* time == -1 */
{
/*
* If there is no character available within 2 seconds (default)
* write the autoscript file to disk
*/
if (WaitForChar(p_ut) == 0)
updatescript(0);
}
WaitForChar(FOREVER); /* wait for key or mouse click */
/*
* Try to read as many characters as there are, until the buffer is full.
*/
/*
* 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;
#ifdef USE_MOUSE
if (mouse_click >= 0 && maxlen >= 5)
{
len = 5;
*buf++ = ESC + 128;
*buf++ = 'M';
*buf++ = mouse_click;
*buf++ = mouse_x + '!';
*buf++ = mouse_y + '!';
mouse_click = -1;
}
else
#endif
{
#ifdef USE_MOUSE
mouse_hidden = TRUE;
#endif
if (p_biosk)
{
while ((len == 0 || bioskey(1)) && len < maxlen)
{
c = bioskey(0); /* get the key */
/*
* translate a few things for inchar():
* 0x0000 == CTRL-break -> 3 (CTRL-C)
* 0x0300 == CTRL-@ -> NUL
* 0xnn00 == extended key code -> K_NUL, nn
* K_NUL -> K_NUL, 3
*/
if (c == 0)
c = 3;
else if (c == 0x0300)
c = NUL;
else if ((c & 0xff) == 0 || c == K_NUL)
{
if (c == K_NUL)
c = 3;
else
c >>= 8;
*buf++ = K_NUL;
++len;
}
if (len < maxlen)
{
*buf++ = c;
len++;
}
else
nextchar = c;
}
}
else
{
while ((len == 0 || kbhit()) && len < maxlen)
{
switch (c = getch())
{
case 0:
/* NUL means that there is another character.
* Get it immediately, because kbhit() doesn't always
* return TRUE for the second character.
*/
*buf++ = K_NUL;
++len;
c = getch();
break;
case K_NUL:
*buf++ = K_NUL;
++len;
c = 3;
break;
case 3:
cbrk_pressed = TRUE;
/*FALLTHROUGH*/
default:
break;
}
if (len < maxlen)
{
*buf++ = c;
++len;
}
else
nextchar = c;
}
}
}
#ifdef USE_MOUSE
show_mouse(FALSE);
#endif
beep_count = 0; /* may beep again now that we got some chars */
return len;
}
/*
* return non-zero if a character is available
*/
int
mch_char_avail(void)
{
return WaitForChar(0L);
}
#ifdef DJGPP
# define INT_ARG int
#else
# define INT_ARG
#endif
/*
* function for ctrl-break interrupt
*/
static void interrupt
#ifdef DJGPP
catch_cbrk(int a)
#else
catch_cbrk(void)
#endif
{
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 mch_inchar().
*/
static int _cdecl
cbrk_handler(void)
{
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)
*/
static 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 interrupt vectors for use with Vim on or off.
* on == TRUE means as used within Vim
*/
static void
set_interrupts(int on)
{
static int saved_cbrk;
#ifndef DJGPP
static void interrupt (*old_cint)();
#endif
static void interrupt (*old_cbrk)(INT_ARG);
if (on)
{
saved_cbrk = getcbrk(); /* save old ctrl-break setting */
setcbrk(0); /* do not check for ctrl-break */
#ifdef DJGPP
old_cbrk = signal(SIGINT, catch_cbrk); /* critical error interrupt */
#else
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 */
#endif
if (term_console)
out_str(T_ME); /* set colors */
}
else
{
setcbrk(saved_cbrk); /* restore ctrl-break setting */
#ifdef DJGPP
signal(SIGINT,old_cbrk); /* critical error interrupt */
#else
setvect(0x24, old_cint); /* restore critical error interrupt */
setvect(0x1B, old_cbrk); /* restore ctrl-break interrupt */
#endif
/* restore ctrl-break handler, how ??? */
if (term_console)
mynormvideo(); /* restore screen colors */
}
}
/*
* We have no job control, fake it by starting a new shell.
*/
void
mch_suspend(void)
{
suspend_shell();
}
extern int _fmode;
/*
* Prepare window for use by Vim.
* we do not use windows, there is not much to do here
*/
void
mch_windinit(void)
{
union REGS regs;
term_console = TRUE; /* assume using the console for the things here */
_fmode = O_BINARY; /* we do our own CR-LF translation */
out_flush();
set_interrupts(TRUE); /* catch interrupts */
#ifdef DJGPP
/*
* Use Long File Names by default, if $LFN not set.
*/
if (getenv("LFN") == NULL)
putenv("LFN=y");
get_screenbase();
#endif
#ifdef USE_MOUSE
/* find out if a MS compatible mouse is available */
regs.x.ax = 0;
(void)int86(0x33, ®s, ®s);
mouse_avail = regs.x.ax;
/* best guess for mouse coordinate computations */
mch_get_winsize();
if (Columns <= 40)
mouse_x_div = 16;
if (Rows == 30)
mouse_y_div = 16;
#endif
/*
* Try switching to 16 colors for background, instead of 8 colors and
* blinking. Does this always work? Can the old value be restored?
*/
regs.x.ax = 0x1003;
regs.h.bl = 0x00;
regs.h.bh = 0x00;
int86(0x10, ®s, ®s);
/* Save the old cursor shape */
mch_restore_cursor_shape(FALSE);
/* Initialise the cursor shape */
mch_update_cursor();
}
int
mch_check_win(
int argc,
char **argv)
{
/* store argv[0], may be used for $VIM */
if (*argv[0] != NUL)
exe_name = FullName_save((char_u *)argv[0], FALSE);
if (isatty(1))
return OK;
return FAIL;
}
/*
* Return TRUE if the input comes from a terminal, FALSE otherwise.
*/
int
mch_input_isatty(void)
{
if (isatty(read_cmd_fd))
return TRUE;
return FALSE;
}
#ifdef USE_FNAME_CASE
/*
* fname_case(): Set the case of the file name, if it already exists.
*/
void
fname_case(char_u *name)
{
char_u *tail;
struct ffblk fb;
slash_adjust(name);
if (findfirst(name, &fb, 0) == 0)
{
tail = gettail(name);
if (STRLEN(tail) == STRLEN(fb.ff_name))
STRCPY(tail, fb.ff_name);
}
}
#endif
/*
* mch_settitle(): set titlebar of our window.
* Dos console has no title.
*/
void
mch_settitle(
char_u *title,
char_u *icon)
{
}
/*
* Restore the window/icon title. (which we don't have)
*/
void
mch_restore_title(int which)
{
}
int
mch_can_restore_title(void)
{
return FALSE;
}
int
mch_can_restore_icon(void)
{
return FALSE;
}
/*
* Insert user name in s[len].
*/
int
mch_get_user_name(
char_u *s,
int len)
{
*s = NUL;
return FAIL;
}
/*
* Insert host name is s[len].
*/
void
mch_get_host_name(
char_u *s,
int len)
{
#ifdef DJGPP
STRNCPY(s, "PC (32 bits Vim)", len);
#else
STRNCPY(s, "PC (16 bits Vim)", len);
#endif
}
/*
* return process ID
*/
long
mch_get_pid(void)
{
return (long)0;
}
/*
* Get name of current directory into buffer 'buf' of length 'len' bytes.
* Return OK for success, FAIL for failure.
*/
int
mch_dirname(
char_u *buf,
int len)
{
#ifdef DJGPP
if (getcwd((char *)buf, len) == NULL)
return FAIL;
/* turn the '/'s returned by DJGPP into '\'s */
slash_adjust(buf);
return OK;
#else
return (getcwd((char *)buf, len) != NULL ? OK : FAIL);
#endif
}
/*
* Change default drive (just like _chdrive of Borland C 3.1)
*/
static int
change_drive(int drive)
{
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 file name into buffer 'buf' of length 'len' bytes.
* All slashes are replaced with backslashes, to avoid trouble when comparing
* file names.
*
* return FAIL for failure, OK otherwise
*/
int
mch_FullName(
char_u *fname,
char_u *buf,
int len,
int force)
{
if (fname == NULL) /* always fail */
{
*buf = NUL;
return FAIL;
}
if (!force && mch_isFullName(fname)) /* allready expanded */
{
STRNCPY(buf, fname, len);
slash_adjust(buf);
return OK;
}
#ifdef __BORLANDC__ /* the old Turbo C does not have this */
if (_fullpath((char *)buf, (char *)fname, len - 1) == NULL)
{
STRNCPY(buf, fname, len); /* failed, use the relative path name */
slash_adjust(buf);
return FAIL;
}
if (mch_isdir(fname))
STRCAT(buf, "\\");
slash_adjust(buf);
return OK;
#else /* almost the same as mch_FullName in os_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 = vim_strrchr(fname, '/');
q = vim_strrchr(fname, '\\');
if (q != NULL && (p == NULL || q > p))
p = q;
q = vim_strrchr(fname, ':');
if (q != NULL && (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 ((q + 1) == p) /* ... c:\foo */
q = p + 1; /* -> c:\ */
else /* but c:\foo\bar */
q = p; /* -> c:\foo */
c = *q; /* truncate at start of fname */
*q = NUL;
#ifdef DJGPP
STRCPY(buf, fname);
slash_adjust(buf); /* needed when fname starts with \ */
if (mch_chdir(buf)) /* change to the directory */
#else
if (mch_chdir(fname)) /* change to the directory */
#endif
retval = FAIL;
else
{
fname = q;
if (c == '\\') /* if we cut the name at a */
fname++; /* '\', don't add it again */
}
*q = c;
}
}
if (getcwd(buf, len) == NULL)
{
retval = FAIL;
*buf = NUL;
}
/*
* Concatenate the file name to the path.
*/
l = STRLEN(buf);
if (l && buf[l - 1] != '/' && buf[l - 1] != '\\')
strcat(buf, "/");
if (p)
mch_chdir(olddir);
strcat(buf, fname);
slash_adjust(buf);
return retval;
}
#endif
}
/*
* Replace all slashes by backslashes.
* This used to be the other way around, but MS-DOS sometimes has problems
* with slashes (e.g. in a command name). We can't have mixed slashes and
* backslashes, because comparing file names will not work correctly. The
* commands that use a file name should try to avoid the need to type a
* backslash twice.
*/
void
slash_adjust(char_u *p)
{
#ifdef OLD_DJGPP /* this seems to have been fixed in DJGPP 2.01 */
/* DJGPP can't handle a file name that starts with a backslash, and when it
* starts with a slash there should be no backslashes */
if (*p == '\\' || *p == '/')
while (*p)
{
if (*p == '\\')
*p = '/';
++p;
}
else
#endif
while (*p)
{
if (*p == '/')
*p = '\\';
++p;
}
}
/*
* return TRUE is fname is an absolute path name
*/
int
mch_isFullName(char_u *fname)
{
return (vim_strchr(fname, ':') != NULL);
}
/*
* get file permissions for 'name'
* -1 : error
* else FA_attributes defined in dos.h
*/
long
mch_getperm(char_u *name)
{
return (long)_chmod((char *)name, 0, 0); /* get file mode */
}
/*
* set file permission for 'name' to 'perm'
*
* return FAIL for failure, OK otherwise
*/
int
mch_setperm(
char_u *name,
long perm)
{
perm |= FA_ARCH; /* file has changed, set archive bit */
return (_chmod((char *)name, 1, (int)perm) == -1 ? FAIL : OK);
}
/*
* Set hidden flag for "name".
*/
void
mch_hide(char_u *name)
{
/* DOS 6.2 share.exe causes "seek error on file write" errors when making
* the swap file hidden. Thus don't do it. */
}
/*
* return TRUE if "name" is a directory
* return FALSE if "name" is not a directory
* return FALSE for error
*
* beware of a trailing backslash
*/
int
mch_isdir(char_u *name)
{
int f;
char_u *p;
p = name + strlen((char *)name);
if (p > name)
--p;
if (*p == '\\') /* remove trailing backslash for a moment */
*p = NUL;
else
p = NULL;
f = _chmod((char *)name, 0, 0);
if (p != NULL)
*p = '\\'; /* put back backslash */
if (f == -1)
return FALSE; /* 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(int r)
{
settmode(TMODE_COOK);
stoptermcap();
set_interrupts(FALSE); /* restore interrupts */
out_char('\r');
out_char('\n');
out_flush();
ml_close_all(TRUE); /* remove all memfiles */
mch_restore_cursor_shape(TRUE);
exit(r);
}
/*
* set the tty in (raw) ? "raw" : "cooked" mode
* Does not change the tty, as bioskey() and kbhit() work raw all the time.
*/
void
mch_settmode(int tmode)
{
}
#ifdef USE_MOUSE
void
mch_setmouse(int on)
{
mouse_active = on;
mouse_hidden = TRUE; /* dont show it until moved */
}
#endif
/*
* set screen mode
* return FAIL for failure, OK otherwise
*/
int
mch_screenmode(char_u *arg)
{
int mode;
int i;
static char *(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(names[i], (char *)arg) == 0)
{
mode = modes[i];
break;
}
}
if (mode == -1)
{
EMSG("Unsupported screen mode");
return FAIL;
}
textmode(mode); /* use Borland function */
#ifdef DJGPP
/* base address may have changed */
get_screenbase();
#endif
/* Screen colors may have changed. */
out_str(T_ME);
#ifdef USE_MOUSE
if (mode <= 1 || mode == 4 || mode == 5 || mode == 13 || mode == 0x13)
mouse_x_div = 16;
else
mouse_x_div = 8;
if (mode == 0x11 || mode == 0x12)
mouse_y_div = 16;
else if (mode == 0x10)
mouse_y_div = 14;
else
mouse_y_div = 8;
ui_get_winsize(); /* Rows is used in mouse_area() */
mouse_area(); /* set area where mouse can go */
#endif
return OK;
}
/*
* Structure used by Turbo-C/Borland-C to store video parameters.
*/
#ifndef DJGPP
extern struct text_info _video;
#endif
/*
* try to get the real window size
* return FAIL for failure, OK otherwise
*/
int
mch_get_winsize(void)
{
struct text_info textinfo;
/*
* 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(&textinfo);
Columns = textinfo.screenwidth;
Rows = textinfo.screenheight;
#ifndef DJGPP
if (textinfo.currmode > 10)
Rows = *(char far *)MK_FP(0x40, 0x84) + 1;
#endif
/*
* don't call set_window() when not doing full screen, since it will move
* the cursor. Also skip this when exiting.
*/
if (full_screen && !exiting)
set_window();
if (Columns < MIN_COLUMNS || Rows < MIN_LINES)
{
/* these values are overwritten by termcap size or default */
Columns = 80;
Rows = 25;
return FAIL;
}
check_winsize();
#ifdef DJGPP
mytextinit(&textinfo); /* Added by JML, 1/15/98 */
#endif
return OK;
}
/*
* Set the active window for delline/insline.
*/
void
set_window(void)
{
#ifndef DJGPP
_video.screenheight = Rows;
#endif
mywindow(1, 1, Columns, Rows);
screen_start();
}
void
mch_set_winsize(void)
{
/* should try to set the window size to Rows and Columns */
/* may involve switching display mode.... */
#ifdef USE_MOUSE
mouse_area(); /* set area where mouse can go */
#endif
}
/*
* call shell, return FAIL for failure, OK otherwise
* options == SHELL_FILTER if called by do_filter()
* options == SHELL_COOKED if term needs cooked mode
*/
int
mch_call_shell(
char_u *cmd,
int options)
{
int x;
char_u *newcmd;
out_flush();
if (options & SHELL_COOKED)
settmode(TMODE_COOK); /* set to normal mode */
set_interrupts(FALSE); /* restore interrupts */
#ifdef DJGPP
/* ignore signals while external command is running */
signal(SIGINT, SIG_IGN);
signal(SIGHUP, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
signal(SIGTERM, SIG_IGN);
#endif
if (cmd == NULL)
x = system((char *)p_sh);
else
{
#ifdef DJGPP
/*
* Use 'shell' for system().
*/
setenv("SHELL", (char *)p_sh, 1);
x = system(cmd);
#else
/* we use "command" to start the shell, slow but easy */
newcmd = alloc(STRLEN(p_sh) + STRLEN(p_shcf) + STRLEN(cmd) + 3);
if (newcmd == NULL)
x = -1;
else
{
sprintf((char *)newcmd, "%s %s %s", p_sh, p_shcf, cmd);
x = system((char *)newcmd);
vim_free(newcmd);
}
#endif
}
#ifdef DJGPP
signal(SIGINT, SIG_DFL);
signal(SIGHUP, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
signal(SIGTERM, SIG_DFL);
#endif
settmode(TMODE_RAW); /* set to raw mode */
set_interrupts(TRUE); /* catch interrupts */
if (x && !expand_interactively)
{
msg_putchar('\n');
msg_outnum((long)x);
MSG_PUTS(" returned\n");
}
/* resettitle(); we don't have titles */
(void)ui_get_winsize(); /* display mode may have been changed */
return x;
}
/*
* check for an "interrupt signal": CTRL-break or CTRL-C
*/
void
mch_breakcheck(void)
{
if (ctrlc_pressed)
{
ctrlc_pressed = FALSE;
got_int = TRUE;
}
}
static int _cdecl pstrcmp(); /* BCC does not like the types */
static int _cdecl
pstrcmp(a, b)
char_u **a, **b;
{
return (stricmp((char *)*a, (char *)*b));
}
int
mch_has_wildcard(char_u *s)
{
return (vim_strpbrk(s, (char_u *)"?*$~") != NULL);
}
static void
namelowcpy(
char_u *d,
char_u *s)
{
#ifdef DJGPP
if (USE_LONG_FNAME) /* don't lower case on Windows 95/NT systems */
while (*s)
*d++ = *s++;
else
#endif
while (*s)
*d++ = TO_LOWER(*s++);
*d = NUL;
}
/*
* Recursive function to expand one path section with wildcards.
* Return the number of matches found.
*/
int
mch_expandpath(
struct growarray *gap,
char_u *path,
int flags)
{
char_u *buf;
char_u *p, *s, *e;
int start_len, c;
struct ffblk fb;
int matches;
start_len = gap->ga_len;
buf = alloc(STRLEN(path) + BASENAMELEN + 5); /* make room for file name */
if (buf == NULL)
return 0;
/*
* 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] == '*' && vim_strchr(s, '.') == NULL)
{
*e++ = '.';
*e++ = '*';
}
/* now we have one wildcard component between s and e */
*e = NUL;
/* If we are expanding wildcards we try both files and directories */
if ((c = findfirst((char *)buf, &fb,
(*path || (flags & EW_DIR)) ? FA_DIREC : 0)) != 0)
{
/* not found */
vim_free(buf);
return 0; /* unexpanded or empty */
}
while (!c)
{
namelowcpy((char *)s, fb.ff_name);
/* ignore "." and ".." */
if (*s != '.' || (s[1] != NUL && (s[1] != '.' || s[2] != NUL)))
{
STRCAT(buf, path);
if (mch_has_wildcard(path))
(void)mch_expandpath(gap, buf, flags);
else if (mch_getperm(buf) >= 0) /* add existing file */
addfile(gap, buf, flags);
}
c = findnext(&fb);
}
vim_free(buf);
matches = gap->ga_len - start_len;
if (matches)
qsort(((char_u **)gap->ga_data) + start_len, (size_t)matches,
sizeof(char_u *), pstrcmp);
return matches;
}
/*
* The normal chdir() does not change the default drive.
* This one does.
*/
int
mch_chdir(char *path)
{
if (path[0] == NUL) /* just checking... */
return 0;
if (path[1] == ':') /* has a drive name */
{
if (change_drive(TO_LOWER(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 */
}
#ifdef DJGPP
/*
* mch_rename() works around a bug in rename (aka MoveFile) in
* Windows 95: rename("foo.bar", "foo.bar~") will generate a
* file whose short file name is "FOO.BAR" (its long file name will
* be correct: "foo.bar~"). Because a file can be accessed by
* either its SFN or its LFN, "foo.bar" has effectively been
* renamed to "foo.bar", which is not at all what was wanted. This
* seems to happen only when renaming files with three-character
* extensions by appending a suffix that does not include ".".
* Windows NT gets it right, however, with an SFN of "FOO~1.BAR".
* This works like mch_rename in os_win32.c, but is a bit simpler.
*
* Like rename(), returns 0 upon success, non-zero upon failure.
* Should probably set errno appropriately when errors occur.
*/
int
mch_rename(const char *OldFile, const char *NewFile)
{
char_u *TempFile;
int retval;
int fd;
/* rename() works correctly without long file names, so use that */
if (!_USE_LFN)
return rename(OldFile, NewFile);
if ((TempFile = alloc((unsigned)(STRLEN(OldFile) + 13))) == NULL)
return -1;
STRCPY(TempFile, OldFile);
STRCPY(gettail(TempFile), "axlqwqhy.ba~");
if (rename(OldFile, TempFile))
retval = -1;
else
{
/* now create an empty file called OldFile; this prevents
* the operating system using OldFile as an alias (SFN)
* if we're renaming within the same directory. For example,
* we're editing a file called filename.asc.txt by its SFN,
* filena~1.txt. If we rename filena~1.txt to filena~1.txt~
* (i.e., we're making a backup while writing it), the SFN
* for filena~1.txt~ will be filena~1.txt, by default, which
* will cause all sorts of problems later in buf_write. So, we
* create an empty file called filena~1.txt and the system will have
* to find some other SFN for filena~1.txt~, such as filena~2.txt
*/
if ((fd = open(OldFile, O_RDWR|O_CREAT|O_EXCL, 0444)) < 0)
return -1;
retval = rename(TempFile, NewFile);
close(fd);
mch_remove((char_u *)OldFile);
}
vim_free(TempFile);
return retval; /* success */
}
#endif
/*
* Special version of getenv(): use $HOME when $VIM not defined.
*/
char_u *
mch_getenv(char_u *var)
{
char_u *retval;
retval = (char_u *)getenv((char *)var);
if (retval == NULL && STRCMP(var, "VIM") == 0)
retval = (char_u *)getenv("HOME");
return retval;
}
#ifdef DJGPP
/*
* setlocale() for DJGPP with MS-DOS codepage support
* Author: Cyril Slobin
*
* Scaled down a lot for use by Vim: Only support setlocale(LC_ALL, "").
*/
#undef setlocale
#include
#include
#include
#define UPCASE (__dj_ISALNUM | __dj_ISALPHA | __dj_ISGRAPH | __dj_ISPRINT | __dj_ISUPPER)
#define LOCASE (__dj_ISALNUM | __dj_ISALPHA | __dj_ISGRAPH | __dj_ISPRINT | __dj_ISLOWER)
void
djgpp_setlocale(void)
{
__dpmi_regs regs;
struct { char id; unsigned short off, seg; } __attribute__ ((packed)) info;
unsigned char buffer[0x82], lower, upper;
int i;
regs.x.ax = 0x6502;
regs.x.bx = 0xffff;
regs.x.dx = 0xffff;
regs.x.cx = 5;
regs.x.es = __tb >> 4;
regs.x.di = __tb & 0xf;
__dpmi_int(0x21, ®s);
if (regs.x.flags & 1)
return;
dosmemget(__tb, 5, &info);
dosmemget((info.seg << 4) + info.off, 0x82, buffer);
if (*(short *)buffer != 0x80)
return;
/* Fix problem of underscores being replaced with y-umlaut. (Levin) */
if (buffer[26] == 0x5f)
buffer[26] = 0x98;
for (i = 0; i < 0x80; i++)
{
lower = i + 0x80;
upper = (buffer+2)[i];
if (lower != upper)
{
__dj_ctype_flags[lower+1] = LOCASE;
__dj_ctype_toupper[lower+1] = upper;
if (__dj_ctype_flags[upper+1] == 0)
__dj_ctype_flags[upper+1] = UPCASE;
if (__dj_ctype_tolower[upper+1] == upper)
__dj_ctype_tolower[upper+1] = lower;
}
}
return;
}
#endif /* DJGPP */