ref: 199880ade9f3f131ad1541f1156acfcbb9478fc4
dir: /os_plan9.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.
* See README.txt for an overview of the Vim source code.
*/
/*
* os_plan9.c
*
* Plan 9 system-dependent routines.
*/
#include <signal.h>
#include <setjmp.h>
#include <fcntl.h>
#include <lib9.h>
#include <draw.h>
#include <keyboard.h>
#include <event.h>
#include <plumb.h>
#include "vim.h"
/* Vim defines Display. We need it for libdraw. */
#undef Display
/* We need to access the native Plan 9 alarm() since
* it takes milliseconds rather than seconds. */
extern int _ALARM(unsigned long);
extern int _SLEEP(long);
enum {
/* Text modes are in sync with term.c */
TMODE_NORMAL = 0,
TMODE_REVERSE = 1,
TMODE_BOLD = 2,
NCOLORS = 16
};
static int scr_inited;
static Point fontsize;
static Point shellsize;
static Rectangle scrollregion;
static int currow; /* TODO use a Point */
static int curcol;
static Image *cursorsave;
static Image *colortab[NCOLORS];
static Image *fgcolor;
static Image *bgcolor;
static Font *normalfont;
static Font *boldfont;
static Font *curfont;
static int curmode; /* TODO remove this, use cterm_normal_fg_color instead for comparing */
static int plumbkey;
static int done;
/* Timeouts are handled using alarm() and a signal handler.
* When an alarm happens during a syscall, the syscall is
* interrupted. We use setjmp() to handle control flow from
* interrupted library functions. */
static int interruptable;
static jmp_buf timeoutjmpbuf;
static void err9(char *msg) {
char errs[256];
/* TODO */
errstr(errs, sizeof errs);
fprintf(stderr, "%s: %s\n", msg, errs);
exit(1);
}
/* Error handler for libdraw */
static void derr(Display*, char *msg) {
if (interruptable && strcmp(msg, "eof on event pipe") == 0) {
longjmp(timeoutjmpbuf, 1);
}
err9(msg);
}
static void drain_plumb_events(void) {
Event e;
Plumbmsg *m;
char *addr;
int l = ECMD_ONE;
while(ecanread(plumbkey)){
eread(plumbkey, &e);
m = e.v;
addr = plumblookup(m->attr, "addr");
if(addr)
l = atoi(addr);
do_ecmd(0, (char_u*)m->data, NULL, NULL, (linenr_T)l, ECMD_HIDE);
shell_resized();
}
}
static void start_plumber_thread(void)
{
switch (rfork(RFPROC|RFMEM)){
case -1:
fprintf(stderr, "rfork failed\n");
return;
case 0:
while(!done){
drain_plumb_events();
_SLEEP(100);
}
exit(0);
default:
break;
}
}
int mch_has_wildcard(char_u *p) {
for (; *p; mb_ptr_adv(p)) {
if (*p == '\\' && p[1] != NUL) {
++p;
} else if (vim_strchr((char_u *)"*?[{`'$", *p) != NULL ||
(*p == '~' && p[1] != NUL)) {
return TRUE;
}
}
return FALSE;
}
int mch_has_exp_wildcard(char_u *p) {
for (; *p; mb_ptr_adv(p))
{
if (*p == '\\' && p[1] != NUL)
++p;
else
if (vim_strchr((char_u *) "*?[{'", *p) != NULL)
return TRUE;
}
return FALSE;
}
int mch_expandpath(garray_T *gap, char_u *pat, int flags) {
return unix_expandpath(gap, pat, 0, flags, FALSE);
}
int mch_isdir(char_u *name) {
struct stat st;
if (stat((char*)name, &st) != 0) {
return FALSE;
}
return S_ISDIR(st.st_mode) ? TRUE : FALSE;
}
static int executable_file(char_u *name)
{
struct stat st;
if (stat((char *)name, &st))
return 0;
return S_ISREG(st.st_mode) && mch_access((char *)name, X_OK) == 0;
}
int mch_isFullName(char_u *fname) {
return fname[0] == '/' || fname[0] == '#';
}
int mch_can_exe(char_u *name) {
char_u *buf;
char_u *p, *e;
int retval;
/* If it's an absolute or relative path don't need to use $path. */
if (mch_isFullName(name) || (name[0] == '.' && (name[1] == '/'
|| (name[1] == '.' && name[2] == '/'))))
return executable_file(name);
p = (char_u *)getenv("path");
if (p == NULL || *p == NUL)
return -1;
buf = alloc((unsigned)(STRLEN(name) + STRLEN(p) + 2));
if (buf == NULL)
return -1;
/*
* Walk through all entries in $PATH to check if "name" exists there and
* is an executable file.
*/
for (;;)
{
e = (char_u *)strchr((char *)p, '\01');
if (e == NULL)
e = p + STRLEN(p);
if (e - p <= 1) /* empty entry means current dir */
STRCPY(buf, "./");
else
{
vim_strncpy(buf, p, e - p);
add_pathsep(buf);
}
STRCAT(buf, name);
retval = executable_file(buf);
if (retval == 1)
break;
if (*e != '\01')
break;
p = e + 1;
}
vim_free(buf);
return retval;
}
int mch_dirname(char_u *buf, int len) {
return (getcwd((char*)buf, len) ? OK : FAIL);
}
long mch_getperm(char_u *name) {
struct stat st;
if (stat((char*)name, &st) < 0) {
return -1;
}
return st.st_mode;
}
int mch_setperm(char_u *name, long perm) {
return chmod((char*)name, (mode_t)perm) == 0 ? OK : FAIL;
}
int mch_remove(char_u *name) {
return remove((char*)name);
}
void mch_hide(char_u*) {
/* Do nothing */
}
/* getuser() and sysname() can be implemented using this. */
static int read_value_from_file(char *fname, char_u *s, int len) {
int fd;
int n;
fd = open(fname, O_RDONLY);
if (fd < 0) {
vim_strncpy(s, (char_u*)"none", len - 1);
return FAIL;
}
n = read(fd, s, len - 1);
if (n <= 0) {
vim_strncpy(s, (char_u*)"none", len - 1);
} else {
s[n] = '\0';
}
close(fd);
return (n > 0) ? OK : FAIL;
}
int mch_get_user_name(char_u *s, int len) {
return read_value_from_file("/dev/user", s, len);
}
void mch_get_host_name(char_u *s, int len) {
read_value_from_file("/dev/sysname", s, len);
}
void mch_settmode(int) {
/* Do nothing */
}
int mch_screenmode(char_u*) {
/* Always fail */
EMSG(_(e_screenmode));
return FAIL;
}
static void scr_stamp_cursor(void) {
if (cursorsave) {
draw(cursorsave, Rect(0, 0, fontsize.x, fontsize.y),
screen, nil, Pt(screen->clipr.min.x + curcol * fontsize.x,
screen->clipr.min.y + currow * fontsize.y));
border(screen, Rect(screen->clipr.min.x + curcol * fontsize.x,
screen->clipr.min.y + currow * fontsize.y,
screen->clipr.min.x + (curcol + 1) * fontsize.x,
screen->clipr.min.y + (currow + 1) * fontsize.y),
2, colortab[cterm_normal_fg_color - 1], ZP);
}
}
static void scr_unstamp_cursor(void) {
if (cursorsave) {
Rectangle r;
r = Rect(screen->clipr.min.x + curcol * fontsize.x,
screen->clipr.min.y + currow * fontsize.y,
screen->clipr.min.x + (curcol + 1) * fontsize.x,
screen->clipr.min.y + (currow + 1) * fontsize.y);
draw(screen, r, cursorsave, nil, ZP);
}
}
static void scr_pos(int row, int col) {
currow = row;
curcol = col;
}
static void scr_clear(void) {
scr_pos(0, 0);
draw(screen, screen->clipr, bgcolor, nil, ZP);
draw(cursorsave, Rect(0, 0, fontsize.x, fontsize.y), bgcolor, nil, ZP);
}
static void scr_scroll_down(int nlines) {
Rectangle r;
Point pt;
/* Copy up visible part of scroll region */
r = Rect(screen->clipr.min.x + scrollregion.min.x * fontsize.x,
screen->clipr.min.y + scrollregion.min.y * fontsize.y,
screen->clipr.min.x + scrollregion.max.x * fontsize.x,
screen->clipr.min.y + (scrollregion.max.y - nlines) * fontsize.y);
pt = Pt(screen->clipr.min.x + scrollregion.min.x * fontsize.x,
screen->clipr.min.y + (scrollregion.min.y + nlines) * fontsize.y);
draw(screen, r, screen, nil, pt);
/* Clear newly exposed part of scroll region */
r.min.y = r.max.y;
r.max.y = screen->clipr.min.y + scrollregion.max.y * fontsize.y;
draw(screen, r, bgcolor, nil, ZP);
}
static void scr_scroll_up(int nlines) {
Rectangle r;
Point pt;
/* Copy down visible part of scroll region */
r = Rect(screen->clipr.min.x + scrollregion.min.x * fontsize.x,
screen->clipr.min.y + (scrollregion.min.y + nlines) * fontsize.y,
screen->clipr.min.x + scrollregion.max.x * fontsize.x,
screen->clipr.min.y + scrollregion.max.y * fontsize.y);
pt = Pt(screen->clipr.min.x + scrollregion.min.x * fontsize.x,
screen->clipr.min.y + scrollregion.min.y * fontsize.y);
draw(screen, r, screen, nil, pt);
/* Clear newly exposed part of scroll region */
r.max.y = r.min.y;
r.min.y = screen->clipr.min.y + scrollregion.min.y * fontsize.y;
draw(screen, r, bgcolor, nil, ZP);
}
static void scr_set_color(Image **cp, int c) {
if (c >= 0 && c < NCOLORS) {
*cp = colortab[c];
}
}
void mch_set_normal_colors(void) {
char_u *p;
int n;
if (cterm_normal_fg_color == 0) {
cterm_normal_fg_color = 1;
}
if (cterm_normal_bg_color == 0) {
cterm_normal_bg_color = 16;
}
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;
}
}
scr_set_color(&bgcolor, cterm_normal_bg_color - 1);
scr_set_color(&fgcolor, cterm_normal_fg_color - 1);
}
static void scr_tmode(int mode) {
Image *tmp;
if ((curmode & TMODE_REVERSE) != (mode & TMODE_REVERSE)) {
tmp = fgcolor;
fgcolor = bgcolor;
bgcolor = tmp;
}
if (mode & TMODE_BOLD) {
curfont = boldfont;
} else {
curfont = normalfont;
}
if (mode == TMODE_NORMAL) {
scr_set_color(&bgcolor, cterm_normal_bg_color - 1);
scr_set_color(&fgcolor, cterm_normal_fg_color - 1);
}
curmode = mode;
}
/* Read a number and return bytes consumed. */
static int scr_escape_number(char *p, int len, int *n) {
int num;
int chlen;
if (len == 0) {
return -1;
}
num = 0;
chlen = 0;
while (len && isdigit(*p)) {
num = num * 10 + (*p - '0');
p++;
len--;
chlen++;
}
*n = num;
return chlen;
}
/* Handle escape sequence and return number of bytes consumed. */
static int scr_escape_sequence(char *p, int len) {
int nlines;
int n1;
int n2;
int i;
int chlen;
if (len == 0) {
return 0;
}
chlen = 1;
switch (*p) {
case 'J': /* clear screen */
scr_clear();
break;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
n1 = -1;
n2 = -1;
/* First number */
i = scr_escape_number(p, len, &n1);
if (i == -1) {
/* TODO */
fprintf(stderr, "scr_escape_sequence: escape at end of string\n");
exit(1);
}
p += i;
len -= i;
chlen += i;
/* Optional second number */
if (len && *p == ';') {
p += 1;
len -= 1;
chlen += 1;
i = scr_escape_number(p, len, &n2);
if (i == -1) {
/* TODO */
fprintf(stderr, "scr_escape_sequence: missing second number\n");
exit(1);
}
p += i;
len -= i;
chlen += i;
}
if (len == 0) {
/* TODO */
fprintf(stderr, "scr_escape_sequence: early end of escape sequence\n");
exit(1);
}
switch (*p) {
case 'b': /* background color */
scr_set_color(&bgcolor, n1);
break;
case 'f': /* foreground color */
scr_set_color(&fgcolor, n1);
break;
case 'H': /* cursor motion */
scr_pos(n1, n2);
break;
case 'm': /* mode */
scr_tmode(n1);
break;
case 'R': /* scroll region */
scrollregion.min.y = n1;
scrollregion.max.y = n2 + 1;
break;
case 'V': /* scroll region vertical */
scrollregion.min.x = n1;
scrollregion.max.x = n2 + 1;
break;
default:
/* TODO */
fprintf(stderr, "scr_escape_sequence: unimplemented (p=%c)\n", *p);
exit(1);
}
break;
case 'K': /* clear to end of line */
draw(screen, Rect(screen->clipr.min.x + curcol * fontsize.x,
screen->clipr.min.y + currow * fontsize.y,
screen->clipr.max.x,
screen->clipr.min.y + (currow + 1) * fontsize.y),
bgcolor, nil, ZP);
break;
case 'L': /* add new blank line */
p++;
nlines = 1;
while (len >= 3 && p[0] == '\x1b' && p[1] == '[' && p[2] == 'L') {
nlines++;
len -= 3;
p += 3;
chlen += 3;
}
/* TODO what if nlines >= scroll region size */
scr_scroll_up(nlines);
break;
default:
/* TODO */
fprintf(stderr, "scr_escape_sequence: unhandled sequence (p=%c)\n", *p);
exit(1);
}
return chlen;
}
/* Handle special characters. */
static int write_special(char *p, int len) {
int n;
int nbytes;
if (len == 0) {
return 0;
}
nbytes = 0;
while (len > 0) {
switch (*p) {
case '\a': /* Bell */
/* There is no bell on Plan 9. */
break;
case '\b': /* Backspace */
if (curcol > scrollregion.min.x) {
scr_pos(currow, curcol - 1);
} else if (currow > scrollregion.min.y) {
scr_pos(currow - 1, scrollregion.max.x - 1);
}
break;
case '\n': /* New line */
for (n = 0; n < len && *p == '\n'; n++) {
p++;
}
if (currow + n >= scrollregion.max.y) {
scr_scroll_down(currow + n - scrollregion.max.y + 1);
scr_pos(scrollregion.max.y - 1, scrollregion.min.x);
} else {
scr_pos(currow + n, scrollregion.min.x);
}
len -= n;
nbytes += n;
continue; /* process next character */
case '\r': /* Carriage return */
curcol = scrollregion.min.x;
break;
case '\x1b': /* Escape sequences */
if (len > 1 && p[1] == '[') {
n = 2;
n += scr_escape_sequence(p + 2, len - 2);
p += n;
len -= n;
nbytes += n;
continue; /* process next character */
}
break;
default: /* Normal character */
return nbytes;
}
p++;
len--;
nbytes++;
}
return nbytes;
}
/* Draw normal characters. */
static int write_str(char *p, int len) {
int nbytes;
int n;
int m;
if (len == 0) {
return 0;
}
for (nbytes = 0; nbytes < len &&
p[nbytes] != '\a' && p[nbytes] != '\b' &&
p[nbytes] != '\n' && p[nbytes] != '\r' &&
p[nbytes] != '\x1b';
len--, nbytes++)
;
n = nbytes;
while (n > 0) {
m = (curcol + n >= scrollregion.max.x) ?
scrollregion.max.x - curcol : n;
if (m == 0) {
break;
}
stringnbg(screen, Pt(screen->clipr.min.x + curcol * fontsize.x,
screen->clipr.min.y + currow * fontsize.y),
fgcolor, ZP, curfont, p, m, bgcolor, ZP);
curcol += m;
if (curcol == scrollregion.max.x) {
curcol = scrollregion.min.x;
if (currow == scrollregion.max.y - 1) {
scr_scroll_down(1);
} else {
currow++;
}
}
p += m;
n -= m;
}
return nbytes;
}
void mch_write(char_u *p, int len) {
int slen;
scr_unstamp_cursor();
while (len > 0) {
/* Handle special characters. */
slen = write_special((char*)p, len);
p += slen;
len -= slen;
/* Write as many normal characters as possible. */
slen = write_str((char*)p, len);
p += slen;
len -= slen;
}
scr_stamp_cursor();
flushimage(display, 1);
}
static void sigalrm(int, char*, void*) {
/* Do nothing */
}
/* Don't allow mouse events to accumulate. */
static void drain_mouse_events(void) {
while (ecanmouse()) {
emouse();
}
}
int RealWaitForChar(int, long msec, int*) {
Rune rune;
char utf[UTFmax];
int len;
drain_mouse_events();
if (msec == 0 && !ecankbd()) {
return 0;
}
if (msec > 0) {
if (setjmp(timeoutjmpbuf)) {
/* We arrive here if the alarm occurred and a library
* function called drawerror() due to an interrupted
* syscall. */
_ALARM(0);
interruptable = 0;
return 0;
}
interruptable = 1;
_ALARM((unsigned long)msec);
}
/* TODO garbage collect */
rune = ekbd();
if (msec > 0) {
_ALARM(0);
interruptable = 0;
}
if (rune == Ctrl_C && ctrl_c_interrupts) {
got_int = TRUE;
return 0;
}
len = runetochar(utf, &rune);
add_to_input_buf_csi((char_u*)utf, len); /* TODO escape K_SPECIAL? */
return len > 0;
}
int mch_inchar(char_u *buf, int maxlen, long msec, int) {
if (vim_is_input_buf_empty() && RealWaitForChar(0, msec, NULL) == 0) {
return 0;
}
return read_from_input_buf(buf, maxlen);
}
int mch_char_avail(void) {
return ecankbd();
}
void mch_delay(long msec, int ignoreinput) {
if (ignoreinput) {
sleep(msec / 1000);
} else {
RealWaitForChar(0, msec, NULL);
}
}
int mch_nodetype(char_u *name) {
struct stat st;
if (stat((char*)name, &st) < 0) {
return NODE_NORMAL;
}
if (S_ISREG(st.st_mode) || S_ISDIR(st.st_mode)) {
return NODE_NORMAL;
}
return NODE_WRITABLE;
}
int mch_FullName(char_u *fname, char_u *buf, int len, int force) {
int l;
char_u olddir[MAXPATHL];
char_u *p;
int retval = OK;
/* expand it if forced or not an absolute path */
if (force || !mch_isFullName(fname))
{
/*
* If the file name has a path, change to that 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.
*/
if ((p = vim_strrchr(fname, '/')) != NULL)
{
/* Only change directory when we are sure we can return to where
* we are now. After doing "su" chdir(".") might not work. */
if ( (mch_dirname(olddir, MAXPATHL) == FAIL ||
mch_chdir((char *)olddir) != 0))
{
p = NULL; /* can't get current dir: don't chdir */
retval = FAIL;
}
else
{
/* The directory is copied into buf[], to be able to remove
* the file name without changing it (could be a string in
* read-only memory) */
if (p - fname >= len)
retval = FAIL;
else
{
vim_strncpy(buf, fname, p - fname);
if (mch_chdir((char *)buf))
retval = FAIL;
else
fname = p + 1;
*buf = NUL;
}
}
}
if (mch_dirname(buf, len) == FAIL)
{
retval = FAIL;
*buf = NUL;
}
if (p != NULL)
{
l = mch_chdir((char *)olddir);
if (l != 0)
EMSG(_(e_prev_dir));
}
l = STRLEN(buf);
if (l >= len)
retval = FAIL;
else
{
if (l > 0 && buf[l - 1] != '/' && *fname != NUL
&& STRCMP(fname, ".") != 0)
STRCAT(buf, "/");
}
}
/* Catch file names which are too long. */
if (retval == FAIL || STRLEN(buf) + STRLEN(fname) >= len)
return FAIL;
/* Do not append ".", "/dir/." is equal to "/dir". */
if (STRCMP(fname, ".") != 0)
STRCAT(buf, fname);
return OK;
}
long mch_get_pid(void) {
return (long)getpid();
}
int mch_input_isatty(void) {
return isatty(0) ? TRUE : FALSE;
}
int mch_setenv(char *var, char *value, int x) {
char buf[100];
int fd;
int len;
snprintf(buf, sizeof buf, "/env/%s", var);
/* Check for overwrite */
if (!x) {
struct stat st;
if (stat(buf, &st) == 0) {
return -1;
}
}
/* Write the value */
fd = creat(buf, 0666);
if (fd < 0) {
return -1;
}
len = strlen(value);
if (write(fd, value, len) != len) {
close(fd);
return -1;
}
close(fd);
return 0;
}
void mch_suspend(void) {
suspend_shell();
}
static void update_shellsize(void) {
shellsize = Pt((screen->clipr.max.x - screen->clipr.min.x) / fontsize.x,
(screen->clipr.max.y - screen->clipr.min.y) / fontsize.y);
}
int mch_get_shellsize(void) {
update_shellsize();
Rows = shellsize.y;
Columns = shellsize.x;
scrollregion.min.x = 0;
scrollregion.min.y = 0;
scrollregion.max.x = shellsize.x;
scrollregion.max.y = shellsize.y;
return OK;
}
void mch_set_shellsize(void) {
/* Do nothing */
}
void mch_new_shellsize(void) {
/* Do nothing */
}
void mch_breakcheck(void) {
if (scr_inited) {
/* Read into input buffer and check for Ctrl-C. */
RealWaitForChar(0, 0, NULL);
}
}
/* Called by libevent whenever a resize event occurs. */
void eresized(int renew) {
if (renew) {
if (getwindow(display, Refnone) < 0) {
err9("resize failed");
}
}
shell_resized();
}
static void init_colors(void) {
int i;
int colors[NCOLORS] = {
/* Copied from hardcopy.c and adjusted for libdraw. */
0x000000ff, 0x0000c0ff, 0x008000ff, 0x004080ff,
0xc00000ff, 0xc000c0ff, 0x808000ff, 0xc0c0c0ff,
0x808080ff, 0x6060ffff, 0x00ff00ff, 0x00ffffff,
0xff8080ff, 0xff40ffff, 0xffff00ff, 0xffffffff
};
for (i = 0; i < NCOLORS; i++) {
colortab[i] = allocimage(display, Rect(0, 0, 1, 1), screen->chan, 1, colors[i]);
if (colortab[i] == nil) {
err9("allocimage failed");
}
}
mch_set_normal_colors();
}
static void free_colors(void) {
int i;
bgcolor = nil;
fgcolor = nil;
for (i = 0; i < NCOLORS; i++) {
freeimage(colortab[i]);
colortab[i] = nil;
}
}
static void init_fonts(void) {
char *n;
n = getenv("font");
if(n)
normalfont = openfont(display, n);
else
normalfont = openfont(display, "/lib/font/bit/fixed/unicode.9x18.font");
if (normalfont == nil) {
err9("openfont normal failed");
}
boldfont = openfont(display, "/lib/font/bit/fixed/unicode.9x18B.font");
if (boldfont == nil) {
err9("openfont bold failed");
}
curfont = normalfont;
}
static void free_fonts(void) {
freefont(normalfont);
freefont(boldfont);
curfont = nil;
}
void mch_early_init(void) {
rfork(RFENVG | RFNOTEG);
}
int mch_check_win(int, char**) {
return OK;
}
static void scr_init(void) {
if (initdraw(derr, nil, "Vim") == -1) {
err9("initdraw failed");
}
init_colors();
init_fonts();
fontsize = stringsize(curfont, "A");
cursorsave = allocimage(display, Rect(0, 0, fontsize.x, fontsize.y), screen->chan, 0, DBlack);
mch_get_shellsize();
scr_clear();
scr_stamp_cursor();
flushimage(display, 1);
/* Mouse events must be enabled to receive window resizes. */
einit(Emouse | Ekeyboard);
plumbkey = eplumb(512, "edit");
start_plumber_thread();
scr_inited = TRUE;
}
void mch_init(void) {
done = FALSE;
signal(SIGALRM, sigalrm);
scr_init();
/*
* Force UTF-8 output no matter what the value of 'encoding' is.
* did_set_string_option() in option.c prohibits changing 'termencoding'
* to something else than UTF-8.
*/
set_option_value((char_u *)"termencoding", 0L, (char_u *)"utf-8", 0);
#if defined(FEAT_CLIPBOARD)
clip_init(TRUE);
#endif
}
void mch_exit(int r) {
done = TRUE;
ml_close_all(TRUE); /* remove all memfiles */
/* libdraw shuts down automatically on exit */
exit(r);
}
#if defined(FEAT_TITLE)
void mch_settitle(char_u *title, char_u *) {
int fd;
fd = open("/dev/label", O_WRONLY);
if (fd < 0) {
/* Not running under rio. */
return;
}
write(fd, (char*)title, strlen((char*)title));
close(fd);
}
void mch_restore_title(int) {
/* No need to restore - libdraw does this automatically. */
}
int mch_can_restore_title(void) {
return TRUE;
}
int mch_can_restore_icon(void) {
return FALSE;
}
#endif
#if defined(FEAT_CLIPBOARD)
int clip_mch_own_selection(VimClipboard*) {
/* We never own the clipboard. */
return FAIL;
}
void clip_mch_lose_selection(VimClipboard*) {
/* Do nothing */
}
void clip_mch_request_selection(VimClipboard *cbd) {
int fd;
char_u *data;
char_u *newdata;
long_u len; /* used length */
long_u mlen; /* max allocated length */
ssize_t n;
int type;
fd = open("/dev/snarf", O_RDONLY);
if (fd < 0) {
/* Not running under rio. */
return;
}
n = 0;
len = 0;
mlen = 0;
data = NULL;
do {
len += n;
mlen += 4096;
newdata = vim_realloc(data, mlen);
if (!newdata) {
n = -1;
break;
}
data = newdata;
n = read(fd, data, 4096);
/* TODO breakcheck? */
} while (n == 4096);
if (n >= 0) {
len += n;
type = memchr(data, '\n', len) ? MLINE : MCHAR;
clip_yank_selection(type, data, len, cbd);
}
vim_free(data);
close(fd);
}
void clip_mch_set_selection(VimClipboard *cbd) {
char_u *data;
long_u len;
int type;
int fd;
/* If the '*' register isn't already filled in, fill it in now. */
cbd->owned = TRUE;
clip_get_selection(cbd);
cbd->owned = FALSE;
type = clip_convert_selection(&data, &len, cbd);
if (type < 0) {
return;
}
fd = open("/dev/snarf", O_WRONLY);
if (fd >= 0) {
write(fd, data, len);
close(fd);
}
vim_free(data);
}
#endif
#if defined(FEAT_MOUSE)
void mch_setmouse(int) {
/* Do nothing. Mouse needed for clipboard. */
}
#endif
static pid_t
forkwin(int hide){
char spec[256];
char *wsys;
int wfd;
pid_t pid;
/* Fork child. */
pid = fork();
if(pid != 0)
return pid;
/* We need a separate namespace from parent process. */
rfork(RFNAMEG);
/* Mounting the window system creates a new window. */
wsys = getenv("wsys");
if(!wsys){
fprintf(stderr, "wsys not set\n");
exit(1);
}
wfd = open(wsys, O_RDWR);
if(wfd < 0){
fprintf(stderr, "unable to open \"%s\"\n", wsys);
exit(1);
}
snprintf(spec, sizeof spec, "new -pid %d -scroll %s", getpid(), hide ? "-hide" : "");
if(mount(wfd, -1, "/mnt/wsys", MREPL, spec) < 0){
fprintf(stderr, "unable to mount\n");
exit(1);
}
if(bind("/mnt/wsys", "/dev", MBEFORE) < 0){
fprintf(stderr, "unable to bind\n");
exit(1);
}
/* Now reopen standard input, output, and error. */
freopen("/dev/cons", "r", stdin);
setbuf(stdin, NULL);
freopen("/dev/cons", "w", stdout);
setbuf(stdout, NULL);
freopen("/dev/cons", "w", stderr);
setbuf(stderr, NULL);
return pid;
}
int mch_call_shell(char_u *cmd, int options) {
char ch;
pid_t pid;
int status;
int hide;
/* Non-interactive commands run in a hidden window. */
hide = options & SHELL_FILTER || options & SHELL_DOOUT;
pid = forkwin(hide);
if (pid == -1) {
MSG_PUTS(_("\nCannot fork\n"));
return -1;
}
if (pid == 0) {
/* Fork again so that we can prompt the user to
* press a key before the window closes. */
pid = fork();
if (pid == -1) {
exit(255);
}
if (pid == 0) {
if (cmd) {
execl("/bin/rc", "rc", "-c", cmd, NULL);
} else {
execl("/bin/rc", "rc", NULL);
}
exit(122); /* same as on UNIX Vim */
} else {
waitpid(pid, &status, 0);
if (!hide) {
printf("\nPress RETURN to close this window...");
read(0, &ch, 1);
}
exit(status);
}
}
waitpid(pid, &status, 0);
return status;
}