ref: d916a4c3823f55227ffae35738c2497256e307b5
dir: /appl/cmd/9win.b/
implement Ninewin;
include "sys.m";
sys: Sys;
include "draw.m";
draw: Draw;
Image, Display, Pointer: import draw;
include "arg.m";
include "keyboard.m";
include "tk.m";
include "wmclient.m";
wmclient: Wmclient;
Window: import wmclient;
include "sh.m";
sh: Sh;
# run a p9 graphics program (default rio) under inferno wm,
# making available to it:
# /dev/winname - naming the current inferno window (changing on resize)
# /dev/mouse - pointer file + resize events; write to change position
# /dev/cursor - change appearance of cursor.
# /dev/draw - inferno draw device
# /dev/cons - read keyboard events, write to 9win stdout.
Ninewin: module {
init: fn(ctxt: ref Draw->Context, argv: list of string);
};
winname: string;
init(ctxt: ref Draw->Context, argv: list of string)
{
size := Draw->Point(500, 500);
sys = load Sys Sys->PATH;
draw = load Draw Draw->PATH;
wmclient = load Wmclient Wmclient->PATH;
wmclient->init();
sh = load Sh Sh->PATH;
buts := Wmclient->Resize;
if(ctxt == nil){
ctxt = wmclient->makedrawcontext();
buts = Wmclient->Plain;
}
arg := load Arg Arg->PATH;
arg->init(argv);
arg->setusage("9win [-s] [-x width] [-y height]");
exportonly := 0;
while(((opt := arg->opt())) != 0){
case opt {
's' =>
exportonly = 1;
'x' =>
size.x = int arg->earg();
'y' =>
size.y = int arg->earg();
* =>
arg->usage();
}
}
if(size.x < 1 || size.y < 1)
arg->usage();
argv = arg->argv();
if(argv != nil && hd argv == "-s"){
exportonly = 1;
argv = tl argv;
}
if(argv == nil && !exportonly)
argv = "rio" :: nil;
if(argv != nil && exportonly){
sys->fprint(sys->fildes(2), "9win: no command allowed with -s flag\n");
raise "fail:usage";
}
title := "9win";
if(!exportonly)
title += " " + hd argv;
w := wmclient->window(ctxt, title, buts);
w.reshape(((0, 0), size));
w.onscreen(nil);
if(w.image == nil){
sys->fprint(sys->fildes(2), "9win: cannot get image to draw on\n");
raise "fail:no window";
}
sys->pctl(Sys->FORKNS|Sys->NEWPGRP, nil);
ld := "/n/9win";
if(sys->bind("#s", ld, Sys->MREPL) == -1 &&
sys->bind("#s", ld = "/n/local", Sys->MREPL) == -1){
sys->fprint(sys->fildes(2), "9win: cannot bind files: %r\n");
raise "fail:error";
}
w.startinput("kbd" :: "ptr" :: nil);
spawn ptrproc(rq := chan of Sys->Rread, ptr := chan[10] of ref Pointer, reshape := chan[1] of int);
fwinname := sys->file2chan(ld, "winname");
fconsctl := sys->file2chan(ld, "consctl");
fcons := sys->file2chan(ld, "cons");
fmouse := sys->file2chan(ld, "mouse");
fcursor := sys->file2chan(ld, "cursor");
if(!exportonly){
spawn run(sync := chan of string, w.ctl, ld, argv);
if((e := <-sync) != nil){
sys->fprint(sys->fildes(2), "9win: %s", e);
raise "fail:error";
}
}
spawn serveproc(w, rq, fwinname, fconsctl, fcons, fmouse, fcursor);
if(!exportonly){
# handle events synchronously so that we don't get a "killed" message
# from the shell.
handleevents(w, ptr, reshape);
}else{
spawn handleevents(w, ptr, reshape);
sys->bind(ld, "/dev", Sys->MBEFORE);
export(sys->fildes(0), w.ctl);
}
}
handleevents(w: ref Window, ptr: chan of ref Pointer, reshape: chan of int)
{
for(;;)alt{
c := <-w.ctxt.ctl or
c = <-w.ctl =>
e := w.wmctl(c);
if(e != nil)
sys->fprint(sys->fildes(2), "9win: ctl error: %s\n", e);
if(e == nil && c != nil && c[0] == '!'){
alt{
reshape <-= 1 =>
;
* =>
;
}
winname = nil;
}
p := <-w.ctxt.ptr =>
if(w.pointer(*p) == 0){
# XXX would block here if client isn't reading mouse... but we do want to
# extert back-pressure, which conflicts.
alt{
ptr <-= p =>
;
* =>
; # sys->fprint(sys->fildes(2), "9win: discarding mouse event\n");
}
}
}
}
serveproc(w: ref Window, mouserq: chan of Sys->Rread, fwinname, fconsctl, fcons, fmouse, fcursor: ref Sys->FileIO)
{
winid := 0;
krc: list of Sys->Rread;
ks: string;
for(;;)alt {
c := <-w.ctxt.kbd =>
ks[len ks] = inf2p9key(c);
if(krc != nil){
hd krc <-= (array of byte ks, nil);
ks = nil;
krc = tl krc;
}
(nil, d, nil, wc) := <-fcons.write =>
if(wc != nil){
sys->write(sys->fildes(1), d, len d);
wc <-= (len d, nil);
}
(nil, nil, nil, rc) := <-fcons.read =>
if(rc != nil){
if(ks != nil){
rc <-= (array of byte ks, nil);
ks = nil;
}else
krc = rc :: krc;
}
(offset, nil, nil, rc) := <-fwinname.read =>
if(rc != nil){
if(winname == nil){
winname = sys->sprint("noborder.9win.%d", winid++);
if(w.image.name(winname, 1) == -1){
sys->fprint(sys->fildes(2), "9win: namewin %q failed: %r", winname);
rc <-= (nil, "namewin failure");
break;
}
}
d := array of byte winname;
if(offset < len d)
d = d[offset:];
else
d = nil;
rc <-= (d, nil);
}
(nil, nil, nil, wc) := <-fwinname.write =>
if(wc != nil)
wc <-= (-1, "permission denied");
(nil, nil, nil, rc) := <-fconsctl.read =>
if(rc != nil)
rc <-= (nil, "permission denied");
(nil, d, nil, wc) := <-fconsctl.write =>
if(wc != nil){
if(string d != "rawon")
wc <-= (-1, "cannot change console mode");
else
wc <-= (len d, nil);
}
(nil, nil, nil, rc) := <-fmouse.read =>
if(rc != nil)
mouserq <-= rc;
(nil, d, nil, wc) := <-fmouse.write =>
if(wc != nil){
e := cursorset(w, string d);
if(e == nil)
wc <-= (len d, nil);
else
wc <-= (-1, e);
}
(nil, nil, nil, rc) := <-fcursor.read =>
if(rc != nil)
rc <-= (nil, "permission denied");
(nil, d, nil, wc) := <-fcursor.write =>
if(wc != nil){
e := cursorswitch(w, d);
if(e == nil)
wc <-= (len d, nil);
else
wc <-= (-1, e);
}
}
}
ptrproc(rq: chan of Sys->Rread, ptr: chan of ref Pointer, reshape: chan of int)
{
rl: list of Sys->Rread;
c := ref Pointer(0, (0, 0), 0);
for(;;){
ch: int;
alt{
p := <-ptr =>
ch = 'm';
c = p;
<-reshape =>
ch = 'r';
rc := <-rq =>
rl = rc :: rl;
continue;
}
if(rl == nil)
rl = <-rq :: rl;
hd rl <-= (sys->aprint("%c%11d %11d %11d %11d ", ch, c.xy.x, c.xy.y, c.buttons, c.msec), nil);
rl = tl rl;
}
}
cursorset(w: ref Window, m: string): string
{
if(m == nil || m[0] != 'm')
return "invalid mouse message";
x := int m[1:];
for(i := 1; i < len m; i++)
if(m[i] == ' '){
while(m[i] == ' ')
i++;
break;
}
if(i == len m)
return "invalid mouse message";
y := int m[i:];
return w.wmctl(sys->sprint("ptr %d %d", x, y));
}
cursorswitch(w: ref Window, d: array of byte): string
{
Hex: con "0123456789abcdef";
if(len d != 2*4+64)
return w.wmctl("cursor");
hot := Draw->Point(bglong(d, 0*4), bglong(d, 1*4));
s := sys->sprint("cursor %d %d 16 32 ", hot.x, hot.y);
for(i := 2*4; i < len d; i++){
c := int d[i];
s[len s] = Hex[c >> 4];
s[len s] = Hex[c & 16rf];
}
return w.wmctl(s);
}
run(sync, ctl: chan of string, ld: string, argv: list of string)
{
Rcmeta: con "|<>&^*[]?();";
sys->pctl(Sys->FORKNS, nil);
if(sys->bind("#₪", "/srv", Sys->MCREATE) == -1){
sync <-= sys->sprint("cannot bind srv device: %r");
exit;
}
srvname := "/srv/9win."+string sys->pctl(0, nil); # XXX do better.
fd := sys->create(srvname, Sys->ORDWR, 8r600);
if(fd == nil){
sync <-= sys->sprint("cannot create %s: %r", srvname);
exit;
}
sync <-= nil;
spawn export(fd, ctl);
sh->run(nil, "os" ::
"rc" :: "-c" ::
"mount "+srvname+" /mnt/term;"+
"rm "+srvname+";"+
"bind -b /mnt/term"+ld+" /dev;"+
"bind /mnt/term/dev/draw /dev/draw ||"+
"bind -a /mnt/term/dev /dev;"+
quotedc("cd"::"/mnt/term"+cwd()::nil, Rcmeta)+";"+
quotedc(argv, Rcmeta)+";"::
nil
);
}
export(fd: ref Sys->FD, ctl: chan of string)
{
sys->export(fd, "/", Sys->EXPWAIT);
ctl <-= "exit";
}
inf2p9key(c: int): int
{
KF: import Keyboard;
P9KF: con 16rF000;
Spec: con 16rF800;
Khome: con P9KF|16r0D;
Kup: con P9KF|16r0E;
Kpgup: con P9KF|16r0F;
Kprint: con P9KF|16r10;
Kleft: con P9KF|16r11;
Kright: con P9KF|16r12;
Kdown: con Spec|16r00;
Kview: con Spec|16r00;
Kpgdown: con P9KF|16r13;
Kins: con P9KF|16r14;
Kend: con P9KF|16r18;
Kalt: con P9KF|16r15;
Kshift: con P9KF|16r16;
Kctl: con P9KF|16r17;
case c {
Keyboard->LShift =>
return Kshift;
Keyboard->LCtrl =>
return Kctl;
Keyboard->LAlt =>
return Kalt;
Keyboard->Home =>
return Khome;
Keyboard->End =>
return Kend;
Keyboard->Up =>
return Kup;
Keyboard->Down =>
return Kdown;
Keyboard->Left =>
return Kleft;
Keyboard->Right =>
return Kright;
Keyboard->Pgup =>
return Kpgup;
Keyboard->Pgdown =>
return Kpgdown;
Keyboard->Ins =>
return Kins;
# function keys
KF|1 or
KF|2 or
KF|3 or
KF|4 or
KF|5 or
KF|6 or
KF|7 or
KF|8 or
KF|9 or
KF|10 or
KF|11 or
KF|12 =>
return (c - KF) + P9KF;
}
return c;
}
cwd(): string
{
return sys->fd2path(sys->open(".", Sys->OREAD));
}
# from string.b, waiting for declaration to be uncommented.
quotedc(argv: list of string, cl: string): string
{
s := "";
while (argv != nil) {
arg := hd argv;
for (i := 0; i < len arg; i++) {
c := arg[i];
if (c == ' ' || c == '\t' || c == '\n' || c == '\'' || in(c, cl))
break;
}
if (i < len arg || arg == nil) {
s += "'" + arg[0:i];
for (; i < len arg; i++) {
if (arg[i] == '\'')
s[len s] = '\'';
s[len s] = arg[i];
}
s[len s] = '\'';
} else
s += arg;
if (tl argv != nil)
s[len s] = ' ';
argv = tl argv;
}
return s;
}
in(c: int, s: string): int
{
n := len s;
if(n == 0)
return 0;
ans := 0;
negate := 0;
if(s[0] == '^') {
negate = 1;
s = s[1:];
n--;
}
for(i := 0; i < n; i++) {
if(s[i] == '-' && i > 0 && i < n-1) {
if(c >= s[i-1] && c <= s[i+1]) {
ans = 1;
break;
}
i++;
}
else
if(c == s[i]) {
ans = 1;
break;
}
}
if(negate)
ans = !ans;
return ans;
}
bglong(d: array of byte, i: int): int
{
return int d[i] | (int d[i+1]<<8) | (int d[i+2]<<16) | (int d[i+3]<<24);
}