+++ /dev/null
-/* 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.
- * See README.txt for an overview of the Vim source code.
- */
-
-/*
- * 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)
- * Windows clipboard functionality added by David Kotchan (dk)
- *
- * Some functions are also used for Win16 (MS-Windows 3.1).
- */
-
-#include "vim.h"
-
-/* cproto fails on missing include files */
-#ifndef PROTO
-# include <conio.h>
-#endif
-
-#ifndef PROTO
-# include <bios.h>
-# ifdef DJGPP
-# include <dpmi.h>
-# include <signal.h>
-# include <sys/movedata.h>
-# include <crt0.h>
-# ifdef FEAT_CLIPBOARD
-# include <sys/segments.h>
-# endif
-# else
-# include <alloc.h>
-# endif
-#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 */
-
-static int bioskey_read = _NKEYBRD_READ; /* bioskey() argument: read key */
-static int bioskey_ready = _NKEYBRD_READY; /* bioskey() argument: key ready? */
-
-#ifdef FEAT_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 coordinate */
-static int mouse_y = -1; /* mouse y coordinate */
-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; /* w_topline at previous mouse click */
-#ifdef FEAT_DIFF
-static int mouse_topfill = 0; /* w_topfill at previous mouse click */
-#endif
-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 */
-
-static int orig_attr = 0x0700; /* video attributes when starting */
-
-static int S_iLeft = 0; /* Scroll window; these are 1 offset */
-static int S_iTop = 0;
-static int S_iRight = 0;
-static int S_iBottom = 0;
-
-/*
- * Need to remember the values, because we set horizontal and vertical
- * edges separately.
- */
- 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);
-}
-
-#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 = 0;
-int S_iCurrentRow = 0; /* These are 0 offset */
-int S_iCurrentColumn = 0;
-short S_selVideo; /* Selector for DJGPP direct video transfers */
-
-/*
- * Use burst writes to improve mch_write speed - VJN 01/10/99
- */
-unsigned short S_linebuffer[8000]; /* <VN> enough for 160x50 */
-unsigned short S_blankbuffer[256]; /* <VN> max length of console line */
-unsigned short *S_linebufferpos = S_linebuffer;
-int S_iBufferRow;
-int S_iBufferColumn;
-
- static void
-myflush(void)
-{
- if (S_linebufferpos != S_linebuffer)
- {
- _dosmemputw(S_linebuffer, (S_linebufferpos - S_linebuffer),
- S_ulScreenBase
- + S_iBufferRow * (Columns << 1) + (S_iBufferColumn << 1));
- S_linebufferpos = S_linebuffer;
- }
-}
-
- static void
-mygotoxy(int x, int y)
-{
- S_iCurrentRow = y - 1;
- S_iCurrentColumn = x - 1;
-}
-
-/*
- * Set the system cursor to our cursor position.
- */
- static void
-set_sys_cursor(void)
-{
- if (term_console && full_screen)
- {
- myflush();
- gotoxy(S_iCurrentColumn + 1, S_iCurrentRow + 1);
- }
-}
-
- static void
-setblankbuffer(unsigned short uiValue)
-{
- int i;
- static unsigned short olduiValue = 0;
-
- if (olduiValue != uiValue)
- {
- /* Load blank line buffer with spaces */
- for (i = 0; i < Columns; ++i)
- S_blankbuffer[i] = uiValue;
- olduiValue = uiValue;
- }
-}
-
- static void
-myclreol(void)
-{
- /* Clear to end of line */
- setblankbuffer(S_uiAttribute | ' ');
- _dosmemputw(S_blankbuffer, S_iRight - S_iCurrentColumn, S_ulScreenBase
- + (S_iCurrentRow) * (Columns << 1)
- + (S_iCurrentColumn << 1));
-}
-
- static void
-myclrscr(void)
-{
- /* Clear whole screen */
- short iColumn;
- int endpoint = (Rows * Columns) << 1;
-
- setblankbuffer(S_uiAttribute | ' ');
-
- for (iColumn = 0; iColumn < endpoint; iColumn += (Columns << 1))
- _dosmemputw(S_blankbuffer, Columns, S_ulScreenBase + iColumn);
-}
-
- static void
-mydelline(void)
-{
- short iRow, iColumn;
-
- iColumn = (S_iLeft - 1) << 1;
-
- /* Copy the lines underneath */
- for (iRow = S_iCurrentRow; iRow < S_iBottom - 1; iRow++)
- movedata(S_selVideo, (((iRow + 1) * Columns) << 1) + iColumn,
- S_selVideo, ((iRow * Columns) << 1) + iColumn,
- (S_iRight - S_iLeft + 1) << 1);
-
- /* Clear the new row */
- setblankbuffer(S_uiAttribute | ' ');
-
- _dosmemputw(S_blankbuffer, (S_iRight - S_iLeft) + 1, S_ulScreenBase
- + (S_iBottom - 1) * (Columns << 1) + iColumn);
-}
-
- static void
-myinsline(void)
-{
- short iRow, iColumn;
-
- iColumn = (S_iLeft - 1) << 1;
-
- /* Copy the lines underneath */
- for (iRow = S_iBottom - 1; iRow >= S_iTop; iRow--)
- movedata(S_selVideo, (((iRow - 1) * Columns) << 1) + iColumn,
- S_selVideo, ((iRow * Columns) << 1) + iColumn,
- (S_iRight - S_iLeft + 1) << 1);
-
- /* Clear the new row */
- setblankbuffer(S_uiAttribute | ' ');
-
- _dosmemputw(S_blankbuffer, (S_iRight - S_iLeft) + 1, S_ulScreenBase
- + (S_iTop - 1) * (Columns << 1) + iColumn);
-}
-
-/*
- * Scroll the screen one line up, clear the last line.
- */
- static void
-myscroll(void)
-{
- short iRow, iColumn;
-
- iColumn = (S_iLeft - 1) << 1;
-
- /* Copy the screen */
- for (iRow = S_iTop; iRow < S_iBottom; iRow++)
- movedata(S_selVideo, ((iRow * Columns) << 1) + iColumn,
- S_selVideo, (((iRow - 1) * Columns) << 1) + iColumn,
- (S_iRight - S_iLeft + 1) << 1);
-
- /* Clear the bottom row */
- setblankbuffer(S_uiAttribute | ' ');
-
- _dosmemputw(S_blankbuffer, (S_iRight - S_iLeft) + 1, S_ulScreenBase
- + (S_iBottom - 1) * (Columns << 1) + iColumn);
-}
-
- static int
-myputch(int iChar)
-{
- unsigned short uiValue;
-
- if (iChar == '\n')
- {
- myflush();
- if (S_iCurrentRow >= S_iBottom - S_iTop)
- myscroll();
- else
- {
- S_iCurrentColumn = S_iLeft - 1;
- S_iCurrentRow++;
- }
- }
- else if (iChar == '\r')
- {
- myflush();
- S_iCurrentColumn = S_iLeft - 1;
- }
- else if (iChar == '\b')
- {
- myflush();
- if (S_iCurrentColumn >= S_iLeft)
- S_iCurrentColumn--;
- }
- else if (iChar == 7)
- {
- sound(440); /* short beep */
- delay(200);
- nosound();
- }
- else
- {
- uiValue = S_uiAttribute | (unsigned char)iChar;
-
- /*
- * Normal char - are we starting to buffer?
- */
- if (S_linebufferpos == S_linebuffer)
- {
- S_iBufferColumn = S_iCurrentColumn;
- S_iBufferRow = S_iCurrentRow;
- }
-
- *S_linebufferpos++ = uiValue;
-
- S_iCurrentColumn++;
- if (S_iCurrentColumn >= S_iRight && S_iCurrentRow >= S_iBottom - S_iTop)
- {
- myflush();
- myscroll();
- S_iCurrentColumn = S_iLeft - 1;
- S_iCurrentRow++;
- }
- }
-
- return 0;
-}
-
- static void
-mytextinit(struct text_info *pTextinfo)
-{
- S_selVideo = __dpmi_segment_to_descriptor(S_ulScreenBase >> 4);
- S_uiAttribute = pTextinfo->normattr << 8;
-}
-
- 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
-mytextattr(int iAttribute)
-{
- S_uiAttribute = (unsigned short)iAttribute << 8;
-}
-
- static void
-mynormvideo(void)
-{
- mytextattr(orig_attr);
-}
-
- static void
-mytextcolor(int iTextColor)
-{
- S_uiAttribute = (unsigned short)((S_uiAttribute & 0xf000)
- | (unsigned short)iTextColor << 8);
-}
-
- static void
-mytextbackground(int iBkgColor)
-{
- S_uiAttribute = (unsigned short)((S_uiAttribute & 0x0f00)
- | (unsigned short)(iBkgColor << 12));
-}
-/*
- * Getdigits: Get a number from a string and skip over it.
- * Note: the argument is a pointer to a char_u pointer!
- */
-
- static long
-mygetdigits(char_u **pp)
-{
- char_u *p;
- long retval = 0;
-
- p = *pp;
- if (*p == '-') /* skip negative sign */
- ++p;
- while (VIM_ISDIGIT(*p))
- {
- retval = (retval * 10) + (*p - '0');
- ++p;
- }
- if (**pp == '-') /* process negative sign */
- retval = -retval;
-
- *pp = p;
- return retval;
-}
-#else
-# define mygotoxy gotoxy
-# define myputch putch
-# define myscroll scroll
-# define mynormvideo normvideo
-# define mytextattr textattr
-# define mytextcolor textcolor
-# define mytextbackground textbackground
-# define mygetdigits getdigits
-# define myclreol clreol
-# define myclrscr clrscr
-# define myinsline insline
-# define mydelline delline
-#endif
-
-static const struct
-{
- char_u scancode;
- char_u metakey;
-} altkey_table[] =
-{
- {0x1e, 0xe1}, /* a */
- {0x30, 0xe2}, /* b */
- {0x2e, 0xe3}, /* c */
- {0x20, 0xe4}, /* d */
- {0x12, 0xe5}, /* e */
- {0x21, 0xe6}, /* f */
- {0x22, 0xe7}, /* g */
- {0x23, 0xe8}, /* h */
- {0x17, 0xe9}, /* i */
- {0x24, 0xea}, /* j */
- {0x25, 0xeb}, /* k */
- {0x26, 0xec}, /* l */
- {0x32, 0xed}, /* m */
- {0x31, 0xee}, /* n */
- {0x18, 0xef}, /* o */
- {0x19, 0xf0}, /* p */
- {0x10, 0xf1}, /* q */
- {0x13, 0xf2}, /* r */
- {0x1f, 0xf3}, /* s */
- {0x14, 0xf4}, /* t */
- {0x16, 0xf5}, /* u */
- {0x2f, 0xf6}, /* v */
- {0x11, 0xf7}, /* w */
- {0x2d, 0xf8}, /* x */
- {0x15, 0xf9}, /* y */
- {0x2c, 0xfa}, /* z */
- {0x78, 0xb1}, /* 1 */
- {0x79, 0xb2}, /* 2 */
- {0x7a, 0xb3}, /* 3 */
- {0x7b, 0xb4}, /* 4 */
- {0x7c, 0xb5}, /* 5 */
- {0x7d, 0xb6}, /* 6 */
- {0x7e, 0xb7}, /* 7 */
- {0x7f, 0xb8}, /* 8 */
- {0x80, 0xb9}, /* 9 */
- {0x81, 0xb0}, /* 0 */
-};
-
-/*
- * Translate extended keycodes into meta-chars where applicable
- */
- static int
-translate_altkeys(int rawkey)
-{
- int i, c;
-
- if ((rawkey & 0xff) == 0)
- {
- c = (rawkey >> 8);
- for (i = sizeof(altkey_table) / sizeof(altkey_table[0]); --i >= 0; )
- {
- if (c == altkey_table[i].scancode)
- return (int)altkey_table[i].metakey;
- }
- }
- return rawkey;
-}
-
-/*
- * Set normal fg/bg color, based on T_ME. Called when t_me has been set.
- */
- void
-mch_set_normal_colors(void)
-{
- char_u *p;
- int n;
-
- cterm_normal_fg_color = (orig_attr & 0xf) + 1;
- cterm_normal_bg_color = ((orig_attr >> 4) & 0xf) + 1;
- if (T_ME[0] == ESC && T_ME[1] == '|')
- {
- p = T_ME + 2;
- n = getdigits(&p);
- if (*p == 'm' && n > 0)
- {
- cterm_normal_fg_color = (n & 0xf) + 1;
- cterm_normal_bg_color = ((n >> 4) & 0xf) + 1;
- }
- }
-}
-
-#if defined(MCH_CURSOR_SHAPE) || defined(PROTO)
-/*
- * 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_shape_idx(FALSE);
-
- if (shape_table[idx].shape == SHAPE_BLOCK)
- thickness = 7;
- else
- thickness = (7 * shape_table[idx].percentage + 90) / 100;
- mch_set_cursor_shape(thickness);
-}
-#endif
-
-/*
- * Return amount of memory currently available in Kbyte.
- */
- long_u
-mch_avail_mem(int special)
-{
-#ifdef DJGPP
- return _go32_dpmi_remaining_virtual_memory() >> 10;
-#else
- return coreleft() >> 10;
-#endif
-}
-
-#ifdef FEAT_MOUSE
-
-/*
- * Set area where mouse can be moved to: The whole screen.
- * Rows and Columns must be valid when calling!
- */
- static void
-mouse_area(void)
-{
- union REGS regs;
-
- if (mouse_avail)
- {
- regs.x.cx = 0; /* mouse visible between cx and dx */
- regs.x.dx = Columns * mouse_x_div - 1;
- regs.x.ax = 7;
- (void)int86(0x33, ®s, ®s);
-
- regs.x.cx = 0; /* mouse visible between cx and dx */
- regs.x.dx = Rows * mouse_y_div - 1;
- 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
-
-/*
- * Version of kbhit() and getch() that use direct console I/O.
- * This avoids trouble with CTRL-P and the like, and should work over a telnet
- * connection (it works for Xvi).
- */
-
-static int cons_key = -1;
-
-/*
- * Try to get one character directly from the console.
- * If there is a key, it is stored in cons_key.
- * Only call when cons_key is -1!
- */
- static void
-cons_getkey(void)
-{
- union REGS regs;
-
- /* call DOS function 6: Direct console I/O */
- regs.h.ah = 0x06;
- regs.h.dl = 0xff;
- (void)intdos(®s, ®s);
- if ((regs.x.flags & 0x40) == 0) /* zero flag not set? */
- cons_key = (regs.h.al & 0xff);
-}
-
-/*
- * Return TRUE if a character is available.
- */
- static int
-cons_kbhit(void)
-{
- if (cons_key < 0)
- cons_getkey();
- return (cons_key >= 0);
-}
-
-/*
- * Return a character from the console.
- * Should only be called when vim_kbhit() returns TRUE.
- */
- static int
-cons_getch(void)
-{
- int c = -1;
-
- if (cons_key < 0)
- cons_getkey();
- c = cons_key;
- cons_key = -1;
- return c;
-}
-
-
-#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 caught by DOS (mool).
- *
- * return TRUE if a character is available, FALSE otherwise
- */
-
-#define FOREVER 1999999999L
-
- static int
-WaitForChar(long msec)
-{
- long starttime = 0;
-
- if (msec != 0)
- starttime = biostime(0, 0L);
-
- for (;;)
- {
-#ifdef FEAT_MOUSE
- long clicktime;
- static int old_status = 0;
- union REGS regs;
- int x, y;
-
- 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 ((old_status == 0) != (regs.x.bx == 0))
- {
- if (old_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
-#ifdef FEAT_DIFF
- && mouse_topfill == curwin->w_topfill
-#endif
- && 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;
-#ifdef FEAT_DIFF
- mouse_topfill = curwin->w_topfill;
-#endif
- SET_NUM_MOUSE_CLICKS(mouse_click, mouse_click_count);
- }
- }
- else if (old_status && (x != mouse_x || y != mouse_y))
- mouse_click = MOUSE_DRAG;
- old_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_consk ? cons_kbhit()
- : p_biosk ? bioskey(bioskey_ready) : kbhit())
- || cbrk_pressed
-#ifdef FEAT_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.
- * The DJGPP implementation of usleep() uses a busy-wait loop too.
- */
- if (msec == 0 || (msec != FOREVER
- && biostime(0, 0L) > starttime + msec / BIOSTICK))
- break;
-
-#ifdef DJGPP
- /* Yield the CPU to the next process. */
- __dpmi_yield();
-#endif
- }
- 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);
-}
-
-/*
- * 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 && full_screen)
- while (len--)
- {
- /* translate ESC | sequences into bios calls */
- if (p_wd) /* testing: wait a bit for each char */
- WaitForChar(p_wd);
-
- if (s[0] == '\n')
-#ifdef DJGPP
- {
- myflush();
- S_iCurrentColumn = S_iLeft - 1;
- }
-#else
- myputch('\r');
-#endif
- else if (s[0] == ESC && len > 1 && s[1] == '|')
- {
- switch (s[2])
- {
-#ifdef DJGPP
- case 'B': ScreenVisualBell();
- goto got3;
-#endif
- case 'J':
-#ifdef DJGPP
- myflush();
-#endif
- myclrscr();
- goto got3;
-
- case 'K':
-#ifdef DJGPP
- myflush();
-#endif
- myclreol();
- goto got3;
-
- case 'L':
-#ifdef DJGPP
- myflush();
-#endif
- myinsline();
- goto got3;
-
- case 'M':
-#ifdef DJGPP
- myflush();
-#endif
- mydelline();
-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 = mygetdigits(&p); /* no check for length! */
- if (p > s + len)
- break;
- if (*p == ';')
- {
- ++p;
- col = mygetdigits(&p); /* no check for length! */
- if (p > s + len)
- break;
- if (*p == 'H' || *p == 'r' || *p == 'V')
- {
-#ifdef DJGPP
- myflush();
-#endif
- if (*p == 'H') /* set cursor position */
- mygotoxy(col, row);
- else if (*p == 'V')
- mywindow(row, S_iTop, col, S_iBottom);
- else /* set scroll region */
- mywindow(S_iLeft, row, S_iRight, 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 function.
- * 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 tb_change_cnt)
-{
- int len = 0;
- int c;
- int tmp_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 screen, 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 FEAT_MOUSE
- if (time != 0)
- show_mouse(TRUE);
-#endif
-#ifdef DJGPP
- set_sys_cursor();
-#endif
- if (time >= 0)
- {
- if (WaitForChar(time) == 0) /* no character available */
- {
-#ifdef FEAT_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. Or cause the CursorHold event
- * to be triggered.
- */
- if (WaitForChar(p_ut) == 0)
- {
-#ifdef FEAT_AUTOCMD
- if (trigger_cursorhold() && maxlen >= 3)
- {
- buf[0] = K_SPECIAL;
- buf[1] = KS_EXTRA;
- buf[2] = (int)KE_CURSORHOLD;
- return 3;
- }
-#endif
- before_blocking();
- }
- }
- 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 FEAT_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 FEAT_MOUSE
- mouse_hidden = TRUE;
-#endif
- if (p_biosk && !p_consk)
- {
- while ((len == 0 || bioskey(bioskey_ready)) && len < maxlen)
- {
- c = translate_altkeys(bioskey(bioskey_read)); /* 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
- * 0xnne0 == enhanced keyboard -> 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
- || c == 0x4e2b
- || c == 0x4a2d
- || c == 0x372a
- || ((c & 0xff) == 0xe0 && c != 0xe0))
- {
- if (c == K_NUL)
- c = 3;
- else
- c >>= 8;
- *buf++ = K_NUL;
- ++len;
- }
-
- if (len < maxlen)
- {
- *buf++ = c;
- len++;
-#ifdef FEAT_MBYTE
- /* Convert from 'termencoding' to 'encoding'. Only
- * translate normal characters, not key codes. */
- if (input_conv.vc_type != CONV_NONE
- && (len == 1 || buf[-2] != K_NUL))
- len += convert_input(buf - 1, 1, maxlen - len + 1) - 1;
-#endif
- }
- else
- nextchar = c;
- }
- }
- else
- {
- while ((len == 0 || (p_consk ? cons_kbhit() : kbhit()))
- && len < maxlen)
- {
- switch (c = (p_consk ? cons_getch() : getch()))
- {
- case 0:
- /* NUL means that there is another character.
- * Get it immediately, because kbhit() doesn't always
- * return TRUE for the second character.
- */
- if (p_consk)
- c = cons_getch();
- else
- c = getch();
- tmp_c = translate_altkeys(c << 8);
- if (tmp_c == (c << 8))
- {
- *buf++ = K_NUL;
- ++len;
- }
- else
- c = tmp_c;
- 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 FEAT_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;
-}
-
-#ifndef DJGPP
-/*
- * 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(
- unsigned bp,
- unsigned di,
- unsigned si,
- unsigned ds,
- unsigned es,
- unsigned dx,
- unsigned cx,
- unsigned bx,
- unsigned ax)
-{
- ax = (ax & 0xff00); /* set AL to 0 */
- if (_osmajor >= 3)
- ax |= 3; /* set AL to 3 */
-}
-#endif
-
-/*
- * 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.
- */
- void
-mch_init(void)
-{
- union REGS regs;
-
-#if defined(DJGPP) && defined(FEAT_CLIPBOARD)
- __dpmi_regs dpmi_regs;
-#endif
-
- /*
- * Get the video attributes at the cursor. These will be used as the
- * default attributes.
- */
- regs.h.ah = 0x08;
- regs.h.bh = 0x00; /* video page 0 */
- int86(0x10, ®s, ®s);
- orig_attr = regs.h.ah;
- mynormvideo();
- if (cterm_normal_fg_color == 0)
- cterm_normal_fg_color = (orig_attr & 0xf) + 1;
- if (cterm_normal_bg_color == 0)
- cterm_normal_bg_color = ((orig_attr >> 4) & 0xf) + 1;
-
- 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 FEAT_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_shellsize();
- 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);
-
- /*
- * Test if we have an enhanced AT keyboard. Write 0xFFFF to the keyboard
- * buffer and try to read it back. If we can't in 16 tries, it's an old
- * type XT keyboard.
- */
- regs.h.ah = 0x05;
- regs.x.cx = 0xffff;
- int86(0x16, ®s, ®s);
- if (regs.h.al != 1) /* skip this when keyboard buffer is full */
- {
- int i;
-
- for (i = 0; i < 16; ++i)
- {
- regs.h.ah = 0x10;
- int86(0x16, ®s, ®s);
- if (regs.x.ax == 0xffff)
- break;
- }
- if (i == 16) /* 0xffff not read, must be old keyboard */
- {
- bioskey_read = 0;
- bioskey_ready = 1;
- }
- }
-
-#ifdef MCH_CURSOR_SHAPE
- /* Save the old cursor shape */
- mch_restore_cursor_shape(FALSE);
- /* Initialise the cursor shape */
- mch_update_cursor();
-#endif
-
-#if defined(DJGPP) && defined(FEAT_CLIPBOARD)
- /*
- * Check to see if the Windows clipboard is available, ie. are we
- * running from a DOS session within Windows. Obviously, the Windows
- * clipboard will not be available if we're running under pure DOS.
- *
- * int 0x2f, AX = 0x1700 identifies the Windows version we're running
- * under. Upon return from the interrupt, if AX is unchanged, we're
- * running under pure DOS and no Windows clipboard is available.
- *
- * Remark: could use int86() here but __dpmi_int() is recommended in
- * the DJGPP docs, since int86() doesn't cover all available interrupts.
- */
- dpmi_regs.x.ax = 0x1700;
- if (__dpmi_int(0x2f, &dpmi_regs) == -1)
- /* real-mode interrupt failed? */
- dpmi_regs.x.ax = 0x1700; /* force failure */
-
- if (dpmi_regs.x.ax == 0x1700) /* no change in AX? */
- clip_init(FALSE); /* no clipboard available, too bad */
- else /* else, running under Windows, OK */
- clip_init(TRUE); /* clipboard is available */
-#endif
-}
-
- 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);
-
- /*
- * Try the DOS search path. The executable may in
- * fact be called differently, so try this last.
- */
- if (exe_name == NULL || *exe_name == NUL)
- exe_name = searchpath("vim.exe");
-
- 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;
-}
-
-#if defined(USE_FNAME_CASE) || defined(PROTO)
-/*
- * fname_case(): Set the case of the file name, if it already exists.
- * TODO: should expand short to long file names. Need to use DOS interrupts,
- * see DJGPP sources libc/dos/dir/findfirs.c.
- */
- void
-fname_case(char_u *name, int len)
-{
- char_u *tail;
- struct ffblk fb;
-
- slash_adjust(name);
- if (findfirst(name, &fb, 0) == 0)
- {
- tail = gettail(name);
- if (len == 0 ? STRLEN(tail) == STRLEN(fb.ff_name)
- : (tail - name) + STRLEN(fb.ff_name) < len)
- STRCPY(tail, fb.ff_name);
- }
-}
-#endif
-
-/*
- * return process ID
- */
- long
-mch_get_pid(void)
-{
- return (long)0;
-}
-
-/*
- * 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;
- 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. When 'shellslash' set do it the other way around.
- *
- * return FAIL for failure, OK otherwise
- */
- int
-mch_FullName(
- char_u *fname,
- char_u *buf,
- int len,
- int force)
-{
- if (!force && mch_isFullName(fname)) /* already expanded */
- {
- vim_strncpy(buf, fname, len - 1);
- slash_adjust(buf);
- return OK;
- }
-
-#ifdef __BORLANDC__ /* Only Borland C++ has this */
- if (_fullpath((char *)buf, (char *)fname, len - 1) == NULL)
- return FAIL;
- return OK;
-#else /* almost the same as mch_FullName() in os_unix.c */
- {
-# if 1
- char_u fullpath[MAXPATHL];
-
- if (!_truename(fname, fullpath))
- return FAIL;
- slash_adjust(fullpath); /* Only needed when 'shellslash' set */
- vim_strncpy(buf, fullpath, len - 1);
- return OK;
-
-# else /* Old code, to be deleted... */
- 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 (p == fname) /* /fname */
- q = p + 1; /* -> / */
- 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 == psepc) /* if we cut the name at a */
- fname++; /* '\', don't add it again */
- }
- *q = c;
- }
- }
- if (getcwd(buf, len) == NULL)
- {
- retval = FAIL;
- *buf = NUL;
- }
-# ifdef USE_FNAME_CASE
- else
- {
- char_u *head;
- char_u *tail;
- struct ffblk fb;
- int c;
- int added;
-
- /* Apparently "longna~1" isn't expanded by getcwd(), at least not
- * for DJGPP. Expand it here. Have to do each dirname
- * separately. */
- slash_adjust(buf);
- head = buf;
- if (isalpha(*head) && head[1] == ':')
- head += 2; /* skip "c:" */
- while (*head != NUL)
- {
- /* Advance "head" to the start of a dirname and "tail" to just
- * after it. */
- while (*head == '/' || *head == '\\')
- ++head;
- for (tail = head; *tail != NUL; ++tail)
- if (*tail == '/' || *tail == '\\')
- break;
- c = *tail;
- *tail = NUL;
-
- if (findfirst(buf, &fb, FA_DIREC) == 0)
- {
- added = STRLEN(fb.ff_name);
- if ((head - buf) + added + STRLEN(tail + 1) + 2 < len)
- {
- added -= (tail - head);
- if (added != 0)
- STRMOVE(tail + 1 + added, tail + 1);
- STRCPY(head, fb.ff_name);
- tail += added;
- }
- }
- *tail = c;
- head = tail;
- }
- }
-# endif
- if (p != NULL)
- mch_chdir(olddir);
- /*
- * Concatenate the file name to the path.
- */
- if (*fname != NUL)
- {
- l = STRLEN(buf);
- if (l > 0 && buf[l - 1] != '/' && buf[l - 1] != '\\')
- strcat(buf, pseps);
- strcat(buf, fname);
- }
- return retval;
-# endif
- }
-#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.
- * When 'shellslash' set do it the other way around.
- */
- 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 = '/';
- mb_ptr_adv(p);
- }
- else
-#endif
- while (*p)
- {
- if (*p == psepcN)
- *p = psepc;
- mb_ptr_adv(p);
- }
-}
-
-/*
- * Return TRUE if "fname" does not depend on the current directory.
- */
- int
-mch_isFullName(char_u *fname)
-{
- /* A name like "d:/foo" and "//server/share" is absolute */
- return (fname[0] != NUL && fname[1] == ':'
- && (fname[2] == '/' || fname[2] == '\\'))
- || (fname[0] == fname[1] && (fname[0] == '/' || fname[0] == '\\'));
-}
-
-
- void
-mch_early_init(void)
-{
-}
-
-/*
- * Careful: mch_exit() may be called before mch_init()!
- */
- void
-mch_exit(int r)
-{
- settmode(TMODE_COOK);
- stoptermcap();
- set_interrupts(FALSE); /* restore interrupts */
-#ifdef DJGPP
- set_sys_cursor();
-#endif
- /* Somehow outputting CR-NL causes the original colors to be restored */
- out_char('\r');
- out_char('\n');
- out_flush();
- ml_close_all(TRUE); /* remove all memfiles */
-#ifdef MCH_CURSOR_SHAPE
- mch_restore_cursor_shape(TRUE);
-#endif
- 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 FEAT_MOUSE
- void
-mch_setmouse(int on)
-{
- mouse_active = on;
- mouse_hidden = TRUE; /* don't 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 (VIM_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("E362: 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 FEAT_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;
- shell_resized();
-#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_shellsize(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
-
- if (Columns < MIN_COLUMNS || Rows < MIN_LINES)
- {
- /* these values are overwritten by termcap size or default */
- Columns = 80;
- Rows = 25;
- return FAIL;
- }
-#ifdef DJGPP
- mytextinit(&textinfo); /* Added by JML, 1/15/98 */
-#endif
-
- return OK;
-}
-
-/*
- * Set the active window for delline/insline.
- */
- static void
-set_window(void)
-{
- if (term_console)
- {
-#ifndef DJGPP
- _video.screenheight = Rows;
-#endif
- mywindow(1, 1, Columns, Rows);
- }
- screen_start();
-}
-
- void
-mch_set_shellsize(void)
-{
- /* Should try to set the window size to Rows and Columns.
- * May involve switching display mode....
- * We assume the user knows the size and just use it. */
-}
-
-/*
- * Rows and/or Columns has changed.
- */
- void
-mch_new_shellsize(void)
-{
-#ifdef FEAT_MOUSE
- /* best guess for mouse coordinate computations */
- if (Columns <= 40)
- mouse_x_div = 16;
- if (Rows == 30)
- mouse_y_div = 16;
-#endif
- set_window();
-#ifdef FEAT_MOUSE
- mouse_area(); /* set area where mouse can go */
-#endif
-}
-
-#if defined(DJGPP) || defined(PROTO)
-/*
- * Check the number of Columns with a BIOS call. This avoids a crash of the
- * DOS console when 'columns' is set to a too large value.
- */
- void
-mch_check_columns(void)
-{
- static union REGS regs;
-
- regs.h.ah = 0x0f;
- (void)int86(0x10, ®s, ®s);
- if ((unsigned)Columns > (unsigned)regs.h.ah)
- Columns = (unsigned)regs.h.ah;
-}
-#endif
-
-/*
- * call shell, return FAIL for failure, OK otherwise
- * options: SHELL_*, see vim.h.
- */
- int
-mch_call_shell(
- char_u *cmd,
- int options)
-{
- int x;
- int tmode = cur_tmode;
-#ifndef DJGPP
- char_u *newcmd;
-#endif
-
- out_flush();
-#ifdef DJGPP
- set_sys_cursor();
-#endif
-
- 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
- if (tmode == TMODE_RAW)
- settmode(TMODE_RAW); /* set to raw mode */
- set_interrupts(TRUE); /* catch interrupts */
-
- if (x && !(options & SHELL_SILENT) && !emsg_silent)
- {
- MSG_PUTS("\nshell returned ");
- msg_outnum((long)x);
- msg_putchar('\n');
- }
-
- 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;
- }
-}
-
-/*
- * Return TRUE if "p" contain a wildcard that can be expanded by
- * dos_expandpath().
- */
- int
-mch_has_exp_wildcard(char_u *p)
-{
- for ( ; *p; mb_ptr_adv(p))
- {
- if (vim_strchr((char_u *)"?*[", *p) != NULL
- || (*p == '~' && p[1] != NUL))
- return TRUE;
- }
- return FALSE;
-}
-
-/*
- * Return TRUE if "p" contain a wildcard or a "~1" kind of thing (could be a
- * shortened file name).
- */
- int
-mch_has_wildcard(char_u *p)
-{
- for ( ; *p; mb_ptr_adv(p))
- {
- if (vim_strchr((char_u *)
-# ifdef VIM_BACKTICK
- "?*$[`"
-# else
- "?*$["
-# endif
- , *p) != NULL
- || (*p == '~' && p[1] != NUL))
- return TRUE;
- }
- return FALSE;
-}
-
-/*
- * Change directory to "path".
- * The normal chdir() does not change the default drive. This one does.
- * Return 0 for success, -1 for failure.
- */
- int
-mch_chdir(char *path)
-{
- if (path[0] == NUL) /* just checking... */
- return 0;
- if (p_verbose >= 5)
- {
- verbose_enter();
- smsg((char_u *)"chdir(%s)", path);
- verbose_leave();
- }
- if (path[1] == ':') /* has a drive name */
- {
- if (change_drive(TOLOWER_ASC(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);
-
- /* If renaming to NewFile failed, rename TempFile back to OldFile, so
- * that it looks like nothing happened. */
- if (retval)
- rename(TempFile, OldFile);
- }
- vim_free(TempFile);
-
- return retval; /* success */
-}
-#endif
-
-#if defined(DJGPP) || defined(PROTO)
-/*
- * setlocale() for DJGPP with MS-DOS codepage support
- * Author: Cyril Slobin <slobin@fe.msk.ru>
- *
- * Scaled down a lot for use by Vim: Only support setlocale(LC_ALL, "").
- */
-
-#undef setlocale
-
-#ifndef PROTO
-# include <go32.h>
-# include <inlines/ctype.ha>
-#endif
-#include <locale.h>
-
-#define UPCASE (__dj_ISALNUM | __dj_ISALPHA | __dj_ISGRAPH | __dj_ISPRINT | __dj_ISUPPER)
-#define LOCASE (__dj_ISALNUM | __dj_ISALPHA | __dj_ISGRAPH | __dj_ISPRINT | __dj_ISLOWER)
-
- char *
-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 NULL;
-
- dosmemget(__tb, 5, &info);
- dosmemget((info.seg << 4) + info.off, 0x82, buffer);
-
- if (*(short *)buffer != 0x80)
- return NULL;
-
- /* 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 "C";
-}
-
-#if defined(FEAT_CLIPBOARD) || defined(PROTO)
-
-/*
- * Clipboard stuff, for cutting and pasting text to other windows.
- *
- * Implementation of DOS/Windows clipboard data transfer
- * by David Kotchan (dkotchan@sympatico.ca)
- */
-
-#define CF_TEXT 0x01 /* Windows clipboard format: Windows (ANSI) text */
-#define CF_OEMTEXT 0x07 /* Windows clipboard format: OEM (DOS) text */
-#define CF_VIMCLIP 0x04 /* trick: SYLK clipboard format for VimClipboard */
-
-static int Win16OpenClipboard(void);
-static int Win16CloseClipboard(void);
-static int Win16EmptyClipboard(void);
-static char_u *Win16GetClipboardData(int clip_data_format);
-static int Win16SetClipboardData(int clip_data_format, char_u *clip_data, int clip_data_size, int clip_data_type);
-
-/*
- * Make vim the owner of the current selection. Return OK upon success.
- */
- int
-clip_mch_own_selection(VimClipboard *cbd)
-{
- /*
- * Never actually own the clipboard. If another application sets the
- * clipboard, we don't want to think that we still own it.
- */
- return FAIL;
-}
-
-/*
- * Make vim NOT the owner of the current selection.
- */
- void
-clip_mch_lose_selection(VimClipboard *cbd)
-{
- /* Nothing needs to be done here */
-}
-
-/*
- * Read the Windows clipboard text and put it in Vim's clipboard register.
- */
- void
-clip_mch_request_selection(VimClipboard *cbd)
-{
- int type = MAUTO;
- char_u *pAllocated = NULL;
- char_u *pClipText = NULL;
- int clip_data_format = 0;
-
- if (Win16OpenClipboard())
- {
- /* Check for Vim's own clipboard format first. The CF_VIMCLIP format
- * is just ordinary text (like CF_TEXT) except prepended by the
- * selection type (as a single character). Note that under DOS we
- * actually cannot define a custom CF_VIMCLIP clipboard format; we
- * use instead one of the existing Windows-defined formats, usually
- * "DIF" or "SYLK". See Win16GetClipboardData() for details.
- *
- * Note that Win16GetClipboardData() returns the address of the memory
- * block it allocated. This is not necessary the start of the
- * clipboard text data: there may be other bytes ahead of the
- * text (particularly for CF_VIMCLIP) which are used for data
- * management. So pClipText is not necessarily == pAllocated.
- */
-
- if ((pAllocated = Win16GetClipboardData(CF_VIMCLIP)) != NULL)
- {
- clip_data_format = CF_VIMCLIP;
- pClipText = pAllocated;
-
- switch (*pClipText++) /* after ++, pClipText points to text */
- {
- default:
- case 'L': type = MLINE; break;
- case 'C': type = MCHAR; break;
- case 'B': type = MBLOCK; break;
- }
- }
-
- /* Otherwise, check for the normal Windows text formats. There are
- * two of these: CF_TEXT (common) and CF_OEMTEXT (used for DOS
- * compatibility). Experiments show that, under the DOS/Windows
- * clipboard interface, writing CF_TEXT data to the clipboard
- * automatically creates a CF_OEMTEXT format as well.
- */
-
- else if ((pAllocated = Win16GetClipboardData(CF_TEXT)) != NULL)
- {
- clip_data_format = CF_TEXT;
- pClipText = pAllocated;
- }
-
- else if ((pAllocated = Win16GetClipboardData(CF_OEMTEXT)) != NULL)
- {
- clip_data_format = CF_OEMTEXT;
- pClipText = pAllocated;
- }
-
- /* Did we get anything? */
-
- if (pClipText != NULL)
- {
- char_u *pDest;
- char_u *pStart;
- char_u *pEnd;
-
- long_u clip_data_size = 0;
-
- /* The Windows clipboard normally stores its text lines terminated
- * by <CR><NL>. But Vim uses only <NL>, so translate the <CR><NL>
- * into <NL>. Also, watch for possible null bytes at the end of
- * pClipText. These are padding added by "get_clipboard_data"
- * (int 0x2f, AX= 0x1705) in order to round the data size up to the
- * next multiple of 32 bytes. See Win16GetClipboardData() for
- * details.
- */
-
- pDest = strstr( pClipText, "\r\n" ); /* find first <CR><NL> */
-
- if (pDest != NULL) /* found one? */
- {
- pStart = pDest + 1; /* points to <NL> after <CR> */
- pEnd = strstr( pStart, "\r\n" );/* find next <CR><NL> */
-
- while (pEnd != NULL) /* found one? */
- {
- memmove(pDest, pStart, (long)(pEnd - pStart));
- /* exclude <CR> */
- pDest += (long)(pEnd - pStart); /* new destination */
- pStart = pEnd + 1; /* new starting point */
- pEnd = strstr(pStart, "\r\n"); /* find next <CR><NL> */
- }
-
- /* Fell out of while() loop: no more <CR><NL> pairs. Just copy
- * the rest of the data, up to the first null byte. */
- pEnd = strchr(pStart, '\0'); /* find first null */
-
- memmove(pDest, pStart, (long)(pEnd - pStart)); /* exclude nul */
- pDest += (long)(pEnd - pStart);
- *pDest = '\0'; /* terminate */
-
- /* Now that all <CR><NL> pairs have been "compressed" into just
- * <NL>'s, determine the true text length. */
- clip_data_size = (long_u)(pDest - pClipText);
- }
- else
- {
- /* no <CR><NL> pairs at all */
- /* Since the data may have been padded with trailing nulls,
- * determine the true string length. */
- clip_data_size = STRLEN(pClipText); /* true data length */
- }
-
- /* Copy the cleaned-up data over to Vim's clipboard "*" register. */
- clip_yank_selection(type, pClipText, clip_data_size, cbd);
-
- /* Free the memory that Win16GetClipboardData() allocated. */
- vim_free(pAllocated);
- }
-
- Win16CloseClipboard();
-
- } // end if (Win16OpenClipboard())
-}
-
-/*
- * Send the currently selected Vim text to the Windows clipboard.
- */
- void
-clip_mch_set_selection( VimClipboard *cbd )
-{
- char_u *pClipData = NULL;
- long_u clip_data_size;
- int clip_data_type;
-
- /* If the '*' register isn't already filled in, fill it in now. */
- cbd->owned = TRUE;
- clip_get_selection(cbd);
- cbd->owned = FALSE;
-
- /*
- * clip_convert_selection() returns a pointer to a buffer containing
- * the text to send to the Windows clipboard, together with a count
- * of the number of characters (bytes) in the buffer. The function's
- * return value is the 'type' of selection: MLINE, MCHAR, or MBLOCK;
- * or -1 for failure.
- */
- clip_data_type = clip_convert_selection(&pClipData, &clip_data_size, cbd);
-
- if (clip_data_type < 0) /* could not convert? */
- return; /* early exit */
-
- if (Win16OpenClipboard())
- {
- if (Win16EmptyClipboard())
- {
- int sentOK;
-
- sentOK = Win16SetClipboardData(CF_TEXT, pClipData,
- clip_data_size, clip_data_type);
- sentOK = Win16SetClipboardData(CF_VIMCLIP,
- pClipData, clip_data_size, clip_data_type) && sentOK;
-
- if (!sentOK)
- {
- /* one or both of Win16SetClipboardData() failed. */
- /* Technically we don't know why Win16SetClipboardData()
- * failed, but almost always it will be because there wasn't
- * enough DOS memory to buffer the data, so report that as the
- * problem.
- *
- * We report the error here (instead of in
- * Win16SetClipboardData()) because we don't want the error
- * reported twice.
- */
- EMSG("E450: Selection too large, cannot allocate DOS buffer");
- }
- }
-
- Win16CloseClipboard();
- }
-
- /* release memory allocated by clip_convert_selection() */
- vim_free(pClipData);
-
- return;
-}
-
-/*
- * Win16OpenClipboard: open the Windows clipboard. The clipboard must be open
- * before it can be communicated with at all. Return TRUE on success,
- * FALSE on failure.
- */
- static int
-Win16OpenClipboard(void)
-{
- __dpmi_regs dpmi_regs;
-
- long start_time;
- int tick_count;
-
- /* int 0x2f, AX = 0x1701 attempts to open the Windows clipboard. Upon
- * return from the interrupt, if AX is non-zero, the clipboard was
- * successfully opened. If AX is zero, the clipboard could not be opened
- * because it is currently in use by another process.
- *
- * Remark: other DOS programs I (dk) have written that use the Windows
- * clipboard sometimes encounter the problem that the clipboard cannot
- * be opened even though it is demonstrably not in use by any other
- * process. In all cases, repeated attempts to open the clipboard
- * eventually succeed, but the initial attempt occasionally fails.
- *
- * The problem is intermittent and appears to be related to DOS being
- * "busy" at certain unpredictable times. DOS maintains two internal
- * flags that indicate whether it's busy: InDOS and CritErr. The
- * location of InDOS can be found by calling int 0x21, AH = 0x34. The
- * location of CritErr can be found by calling int 0x21, AX = 0x5d06.
- * If either of these flags is set, DOS is "busy" and cannot be
- * interrupted. See "Undocumented DOS" by Schulman et al for details.
- *
- * However here I take the easier approach that if the first call to open
- * the clipboard does not succeed, just try again. In fact, try once per
- * biostime() clock tick, up to 18 times (about one second).
- */
-
- tick_count = 0;
-
- dpmi_regs.x.ax = 0x1701; /* open Windows clipboard */
- if (__dpmi_int(0x2f, &dpmi_regs) == -1)
- {
- /* real-mode interrupt failed? */
- return FALSE; /* FALSE --> clipboard not open */
- }
-
- /* wait up to one second */
- while (dpmi_regs.x.ax == 0 && tick_count++ < 18)
- {
- /* Wait one clock tick (18.2 ticks/sec = 55 msec per tick).
- *
- * 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.
- */
- start_time = biostime(0, 0L);
- while (biostime(0, 0L) == start_time)
- ;
-
- dpmi_regs.x.ax = 0x1701; /* open Windows clipboard */
- if (__dpmi_int(0x2f, &dpmi_regs) == -1)
- {
- /* real-mode interrupt failed? */
- return FALSE; /* FALSE --> clipboard not open */
- }
- }
-
- /* Couldn't open the clipboard, even after 18 attempts? */
-
- if (tick_count >= 18 && dpmi_regs.x.ax == 0)
- return FALSE; /* FALSE --> clipboard not open */
-
- return TRUE; /* TRUE --> clipboard opened successfully, OK */
-}
-
-/*
- * Win16CloseClipboard: close the Windows clipboard. Return TRUE on
- * success, FALSE on failure. This function can always be called,
- * whether the clipboard is open or not.
- */
- static int
-Win16CloseClipboard(void)
-{
- __dpmi_regs dpmi_regs;
-
- /* Close the clipboard. This interrupt can always be called, even
- * if the clipboard is already closed.
- */
-
- dpmi_regs.x.ax = 0x1708; /* close the clipboard */
- if (__dpmi_int(0x2f, &dpmi_regs) == -1)
- {
- /* real-mode interrupt failed? */
- return FALSE; /* FALSE --> clipboard could not be closed */
- }
-
- return TRUE; /* TRUE --> clipboard closed successfully, OK */
-}
-
-/*
- * Win16EmptyClipboard: empty the (previously opened) Windows clipboard.
- * Return TRUE on success, FALSE on failure.
- */
- static int
-Win16EmptyClipboard(void)
-{
- __dpmi_regs dpmi_regs;
-
- /* int 0x2f, AX = 0x1702 attempts to empty the Windows clipboard. Upon
- * return from the interrupt, if AX == 0, the clipboard could not be
- * emptied (for some reason).
- */
- dpmi_regs.x.ax = 0x1702; /* empty the Windows clipboard */
- if (__dpmi_int(0x2f, &dpmi_regs) == -1)
- {
- /* real-mode interrupt failed? */
- return FALSE; /* FALSE --> clipboard could not be emptied */
- }
-
- /* Did we succeed in clearing the clipboard? */
- if (dpmi_regs.x.ax == 0)
- return FALSE; /* FALSE --> clipboard could not be emptied */
-
- return TRUE; /* TRUE --> clipboard was emptied, OK */
-}
-
-/*
- * FreeDOSMemory: a helper function to free memory previously
- * allocated by a call to __dpmi_allocate_dos_memory().
- */
- static void
-FreeDOSMemory(int protected_mode_selector)
-{
- /* Free the DOS buffer and release the DPMI prot-mode selector.
- *
- * It's important that DOS memory be properly released because
- * there's only a limited amount of it. Therefore, if the call
- * to __dpmi_free_dos_memory() fails, emit an error message
- * unconditionally.
- */
- if (__dpmi_free_dos_memory(protected_mode_selector) == -1)
- EMSG("E451: could not free DOS memory buffer (DJGPP)");
-}
-
-/*
- * Win16GetClipboardData: query the Windows clipboard as to whether data
- * is available in a particular clipboard format. If data is
- * available, allocate a buffer for it and read the data from the
- * clipboard into the buffer. Return a pointer to the buffer. If
- * no data is available in the requested format, return NULL.
- *
- * This routine allocates memory to hold the retrieved clipboard
- * data. It's the caller's responsibility to free this memory
- * once it's finished using it. The memory should be freed by
- * calling vim_free().
- */
- static char_u *
-Win16GetClipboardData(int clip_data_format)
-{
- __dpmi_regs dpmi_regs;
-
- int real_mode_segment_address;
- int protected_mode_selector;
-
- char_u *clip_data_buffer;
- long_u clip_data_size;
-
- /* We only handle clipboard formats we recognize, others are ignored.
- *
- * It's not possible to create a custom clipboard format for VimClipboard
- * data under DOS, so one of the predefined Windows formats had to be
- * used for CF_VIMCLIP. Two obscure formats, popular when Windows 3.0
- * came out but no longer in much use today, are the DIF and SYLK formats.
- * DIF is the Data Interchange Format, SYLK is the Symbolic Link format.
- * They are both text formats and either one can be hijacked for use as
- * "the VimClipboard format". Of course, this conflicts with anyone who
- * still *is* using DIF or SYLK data formats, but that will be very few
- * people.
- *
- * I (dk) chose SYLK as the more obscure format because it was used
- * mostly for Microsoft Multiplan (the pre-cursor to Excel) and it's not
- * likely Multiplan is used anywhere much anymore. Mind you, Excel can
- * still export to both DIF and SYLK formats.
- */
-
- switch (clip_data_format)
- {
- case CF_VIMCLIP: /* Vim's own special clipboard format */
- case CF_TEXT: /* Windows text */
- case CF_OEMTEXT: /* DOS (OEM) text */
-
- /* int 0x2f, AX = 0x1704 returns the number of bytes of data currently
- * on the Windows clipboard, for the specified format. Upon return
- * from the interrupt, DX:AX = the number of bytes, rounded up to the
- * nearest multiple of 32.
- */
-
- dpmi_regs.x.ax = 0x1704; /* get size of clipbd data */
- dpmi_regs.x.dx = clip_data_format;
- if (__dpmi_int(0x2f, &dpmi_regs) == -1)
- {
- /* real-mode interrupt failed? */
- return NULL; /* early exit */
- }
-
- /* Did we get anything? If not, this is not an error. */
- if (dpmi_regs.x.dx == 0 && dpmi_regs.x.ax == 0)
- {
- /* no CF_VIMCLIP data? */
- return NULL; /* early exit */
- }
-
- /* There is data available in the requested clipboard format.
- *
- * Calculate data size. Remember this is rounded up to the nearest
- * multiple of 32, so clip_data_size is actually an upper limit.
- * The extra bytes, if any, are set to null (0x00) when the data is
- * read from the clipboard. (Later:) actually I'm no longer sure
- * this is strictly true: the end-of-data is marked by a null, but
- * the extra bytes appear to sometimes be null, sometimes not.
- * They may just be garbage.
- */
- clip_data_size = dpmi_regs.x.ax + (dpmi_regs.x.dx << 16);
-
- /* Allocate memory to retrieve the data. The buffer has to lie in the
- * DOS memory region (in the first 1 MByte of address space) because
- * the Windows clipboard interface expects a 16-bit segment:offset
- * pointer to a buffer address within the DOS region. Must therefore
- * use __dpmi_allocate_dos_memory() instead of lalloc() or alloc().
- */
- real_mode_segment_address = __dpmi_allocate_dos_memory(
- (clip_data_size + 15) >> 4, /* buffer size, in 16-byte paragraphs */
- &protected_mode_selector); /* prot-mode selector for the address */
-
- if (real_mode_segment_address == -1)
- {
- /* memory allocation failed. */
-
- /* Technically we don't know why the allocation failed, but
- * almost always it will be because there wasn't enough DOS
- * memory to satisfy the request, so report that as the problem.
- * On my system, DJGPP is able to satisfy a DOS allocation request
- * up to about 600K in size. This depends on your HIMEM.SYS and
- * EMM386.EXE settings however.
- */
- EMSG("E452: Clipboard data too large, cannot allocate DOS buffer");
- return NULL; /* early exit */
- }
-
- /* Copy data from the clipboard into the buffer. Experiments show that
- * the Windows clipboard is smart enough to handle data transfers
- * larger than 64K properly, even though the buffer address is a 16-bit
- * segment:offset (which would normally limit the block size to 64K
- * unless ES gets incremented).
- */
- dpmi_regs.x.ax = 0x1705; /* get clipboard data */
- dpmi_regs.x.dx = clip_data_format; /* CF_VIMCLIP */
- dpmi_regs.x.es = real_mode_segment_address; /* buffer ad: segment */
- dpmi_regs.x.bx = 0; /* buffer ad: offset */
- if (__dpmi_int( 0x2f, &dpmi_regs) == -1)
- {
- /* real-mode interrupt failed? */
- EMSG("E453: could not copy clipboard data to DOS buffer");
- FreeDOSMemory(protected_mode_selector); /* clean up DOS mem */
- return NULL; /* early exit */
- }
-
- /* Clipboard data is now in DOS memory in the buffer pointed to by
- * ES:BX. Copy this into ordinary memory that Vim can access (ie.
- * prot-mode memory). Allocate one extra byte to ensure the text
- * is terminated properly (in case it was somehow corrupted).
- */
- clip_data_buffer = (char_u *)lalloc(clip_data_size + 1, TRUE);
-
- if (clip_data_buffer == NULL)
- {
- /* allocation failed? */
- EMSG("E454: could not allocate clipboard memory buffer");
- FreeDOSMemory(protected_mode_selector); /* clean up DOS mem */
- return NULL; /* early exit */
- }
-
- *(clip_data_buffer + clip_data_size) = '\0'; /* ensure terminated */
-
- /* Copy the data from DOS memory to Vim-accessible memory. */
- movedata( /* DJGPP version of memcpy() */
- protected_mode_selector, 0, /* source: DOS ad (via selector) */
- _my_ds(), (unsigned)clip_data_buffer,
- /* target: normal mem address */
- clip_data_size); /* how many bytes */
-
- /* Free the DOS buffer and release the DPMI prot-mode selector. */
- FreeDOSMemory(protected_mode_selector); /* clean up DOS memory */
-
- return clip_data_buffer; /* return pointer to allocated buffer */
-
- default: /* unknown clipboard format */
- return NULL;
- }
-}
-
-/*
- * Win16SetClipboardData: send 'clip_data_size' bytes of data from the buffer
- * pointed to by 'clip_data', to the Windows clipboard. The data is
- * registered with the clipboard as being in the 'clip_data_format'
- * format.
- */
- static int
-Win16SetClipboardData(
- int clip_data_format,
- char_u *clip_data,
- int clip_data_size,
- int clip_data_type)
-{
- __dpmi_regs dpmi_regs;
-
- int real_mode_segment_address;
- int protected_mode_selector;
- long_u protected_mode_offset = 0L;
- int total_size = clip_data_size;
-
- char_u *clip_sel_type;
-
- /* If we're using the CF_VIMCLIP custom format, allocate an extra
- * byte for clip_sel_type, which is a character indicating the type
- * of text selection: MLINE, MCHAR, or MBLOCK.
- */
- if (clip_data_format == CF_VIMCLIP)
- total_size++; /* extra byte for marker */
-
- /* Data cannot be sent directly from a Vim string (pClipData) to
- * the Windows clipboard, because the Windows clipboard interface
- * expects a 16-bit (DOS) segment:offset address for the source
- * buffer. Therefore we must create a "transfer buffer" in the DOS
- * memory region (in the first 1 MByte of address space) and copy
- * the Vim string into that. From there, the data can then be sent
- * to the Windows clipboard.
- *
- * To allocate DOS memory, we must use __dpmi_allocate_dos_memory()
- * instead of lalloc() or alloc(). If the allocation fails, it will
- * almost invariably be because there is not enough DOS memory
- * available to accommodate the size of clip_data. There is nothing
- * we can do about this, we simply have to fail.
- */
- real_mode_segment_address = __dpmi_allocate_dos_memory(
- (total_size + 15) >> 4, /* buffer size, in 16-byte paragraphs */
- &protected_mode_selector); /* prot-mode selector for the address */
-
- if (real_mode_segment_address == -1)
- {
- /* memory allocation failed. */
- /* Technically we don't know why the allocation failed, but
- * almost always it will be because there wasn't enough DOS
- * memory to satisfy the request. On my system, DJGPP is able
- * to satisfy a DOS allocation request up to about 600K in size.
- * This depends however on HIMEM.SYS and EMM386.EXE settings.
- */
- return FALSE; /* early exit */
- }
-
- /* Copy data from Vim's buffer (clip_data) into the DOS transfer buffer.
- * This can be larger than 64K; movedata() takes care of crossing any
- * 16-bit segment boundaries.
- *
- * If we're using Vim's custom clipboard format, we must copy one extra
- * byte to indicate the type of selection: line, character, or block.
- */
- if (clip_data_format == CF_VIMCLIP)
- {
- switch (clip_data_type)
- {
- default:
- case MLINE: clip_sel_type = "L"; break;
- case MCHAR: clip_sel_type = "C"; break;
- case MBLOCK: clip_sel_type = "B"; break;
- }
-
- movedata(
- _my_ds(), (unsigned)clip_sel_type,
- /* source: normal memory address */
- protected_mode_selector, 0, /* target: DOS ad (via selector) */
- 1); /* how many bytes to copy */
-
- protected_mode_offset += STRLEN(clip_sel_type); /* allow for marker */
- }
-
- movedata(
- _my_ds(), (unsigned)clip_data, /* source: normal memory address */
- protected_mode_selector, /* target: DOS address (via selector) */
- protected_mode_offset, /* non-zero, if using clip_sel_type */
- clip_data_size); /* how many bytes to copy */
-
- /* Send data from the DOS transfer buffer to the Windows clipboard.
- * int 0x2f, AX = 0x1703 sends SI:CX bytes of data from the buffer
- * at ES:BX, to the clipboard.
- */
- dpmi_regs.x.ax = 0x1703; /* send clipboard data */
- dpmi_regs.x.dx = clip_data_format; /* flag: format of the data */
- dpmi_regs.x.si = ((total_size >> 16)
- & 0x0000ffffL); /* hi word of data size */
- dpmi_regs.x.cx = (total_size & 0x0000ffffL);
- /* lo word of data size */
- dpmi_regs.x.es = real_mode_segment_address; /* buffer address: segment */
- dpmi_regs.x.bx = 0; /* buffer address: offset */
- if (__dpmi_int(0x2f, &dpmi_regs) == -1)
- {
- /* real-mode interrupt failed. */
- FreeDOSMemory(protected_mode_selector); /* clean up DOS memory */
- return FALSE; /* early exit */
- }
-
- /* Free the DOS buffer and release the DPMI prot-mode selector. */
- FreeDOSMemory(protected_mode_selector); /* clean up DOS memory */
-
- return TRUE; /* TRUE --> data successfully sent to clipboard */
-}
-
-#endif /* FEAT_CLIPBOARD */
-#endif /* DJGPP */
-
-/* common MS-DOS and Win16 code follows */
-
- static int
-vim_chmod(char_u *name)
-{
- char_u *p;
- int f;
- int c = 0;
-
- /* chmod() can't handle a file name with a trailing slash, remove it.
- * But don't remove it for "/" or "c:/". */
- p = name + STRLEN(name);
- if (p > name)
- --p;
- if (p > name && (*p == '\\' || *p == '/') && p[-1] != ':')
- {
- c = *p; /* remove trailing (back)slash */
- *p = NUL;
- }
- else
- p = NULL;
-#if defined(__BORLANDC__) && (__BORLANDC__ > 0x410)
- /* this also sets the archive bit, supported by Borland C 4.0 and later,
- * where __BORLANDC__ is 0x450 (3.1 is 0x410) */
- f = _rtl_chmod((char *)name, 0, 0);
-#else
- f = _chmod((char *)name, 0, 0);
-#endif
- if (p != NULL)
- *p = c; /* put back (back)slash */
- return f;
-}
-
-/*
- * get file permissions for 'name'
- * Returns -1 for error.
- * Returns FA_attributes defined in dos.h
- */
- long
-mch_getperm(char_u *name)
-{
- return (long)vim_chmod(name); /* 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 */
-#if defined(__BORLANDC__) && (__BORLANDC__ > 0x410)
- return (_rtl_chmod((char *)name, 1, (int)perm) == -1 ? FAIL : OK);
-#else
- return (_chmod((char *)name, 1, (int)perm) == -1 ? FAIL : OK);
-#endif
-}
-
-/*
- * 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 (back)slash
- */
- int
-mch_isdir(char_u *name)
-{
- int f;
-
- f = vim_chmod(name);
- if (f == -1)
- return FALSE; /* file does not exist at all */
- if ((f & FA_DIREC) == 0)
- return FALSE; /* not a directory */
- return TRUE;
-}
-
-/*
- * Return 1 if "name" can be executed, 0 if not.
- * If "use_path" is FALSE only check if "name" is executable.
- * Return -1 if unknown.
- */
- int
-mch_can_exe(
- char_u *name,
- char_u **path,
- int use_path)
-{
- char *p;
- int mode;
-
- if (!use_path)
- {
- /* TODO: proper check if file is executable. */
- mode = vim_chmod(name);
- return mode != -1 && (mode & FA_DIREC) == 0;
- }
- p = searchpath(name);
- if (p == NULL || mch_isdir(p))
- return FALSE;
- if (path != NULL)
- *path = vim_strsave(p);
- return TRUE;
-}
-
-/*
- * Check what "name" is:
- * NODE_NORMAL: file or directory (or doesn't exist)
- * NODE_WRITABLE: writable device, socket, fifo, etc.
- * NODE_OTHER: non-writable things
- */
- int
-mch_nodetype(char_u *name)
-{
- if (STRICMP(name, "AUX") == 0
- || STRICMP(name, "CON") == 0
- || STRICMP(name, "CLOCK$") == 0
- || STRICMP(name, "NUL") == 0
- || STRICMP(name, "PRN") == 0
- || ((STRNICMP(name, "COM", 3) == 0
- || STRNICMP(name, "LPT", 3) == 0)
- && VIM_ISDIGIT(name[3])
- && name[4] == NUL))
- return NODE_WRITABLE;
- /* TODO: NODE_OTHER? */
- return NODE_NORMAL;
-}
-
-/*
- * 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
-}
-
-/*
- * 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);
-}
-
-/*
- * Special version of getenv(): Use uppercase name.
- */
- char_u *
-mch_getenv(char_u *name)
-{
- int i;
-#define MAXENVLEN 50
- char_u var_copy[MAXENVLEN + 1];
- char_u *p;
- char_u *res;
-
- /*
- * Take a copy of the argument, and force it to upper case before passing
- * to getenv(). On DOS systems, getenv() doesn't like lower-case argument
- * (unlike Win32 et al.) If the name is too long to fit in var_copy[]
- * allocate memory.
- */
- if ((i = STRLEN(name)) > MAXENVLEN)
- p = alloc(i + 1);
- else
- p = var_copy;
- if (p == NULL)
- p = name; /* out of memory, fall back to unmodified name */
- else
- {
- for (i = 0; name[i] != NUL; ++i)
- p[i] = toupper(name[i]);
- p[i] = NUL;
- }
-
- res = (char_u *)getenv((char *)p);
-
- if (p != var_copy && p != name)
- vim_free(p);
-
- return res;
-}
-
-/*
- * 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
- vim_strncpy(s, "PC (32 bits Vim)", len - 1);
-#else
- vim_strncpy(s, "PC (16 bits Vim)", len - 1);
-#endif
-}
projects / thirdparty / vim.git / commitdiff
