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implement Gather;
include "sys.m";
sys: Sys;
include "draw.m";
draw: Draw;
Point, Rect, Display, Image, Font: import draw;
include "tk.m";
tk: Tk;
include "tkclient.m";
tkclient: Tkclient;
include "commandline.m";
commandline: Commandline;
Cmdline: import commandline;
include "sh.m";
Gather: module {
init: fn(ctxt: ref Draw->Context, argv: list of string);
};
CLIENTDIR: con "/dis/spree/clients";
drawctxt: ref Draw->Context;
cliquefd: ref Sys->FD;
stderr: ref Sys->FD;
mnt, dir: string;
init(ctxt: ref Draw->Context, argv: list of string)
{
sys = load Sys Sys->PATH;
stderr = sys->fildes(2);
draw = load Draw Draw->PATH;
tk = load Tk Tk->PATH;
tkclient = load Tkclient Tkclient->PATH;
if (tkclient == nil) {
sys->fprint(stderr, "gather: cannot load %s: %r\n", Tkclient->PATH);
raise "fail:bad module";
}
tkclient->init();
commandline = load Commandline Commandline->PATH;
if(commandline == nil) {
sys->fprint(stderr, "gather: cannot load %s: %r\n", Commandline->PATH);
raise "fail:bad module";
}
commandline->init();
drawctxt = ctxt;
cliquefd = sys->fildes(0);
if (len argv >= 3) {
mnt = hd tl argv;
dir = hd tl tl argv;
} else
sys->fprint(stderr, "gather: expected mnt, dir args\n");
client1();
}
client1()
{
(win, winctl) := tkclient->toplevel(drawctxt, nil, "Gathering", Tkclient->Appl);
ech := chan of string;
tk->namechan(win, ech, "e");
(chat, chatevent) := Cmdline.new(win, ".chat", nil);
updatech := chan of string;
spawn readproc(updatech);
cmd(win, "button .b -text Start -command {send e start}");
cmd(win, "pack .b -side top -anchor w");
cmd(win, "pack .chat -fill both -expand 1");
cmd(win, "pack propagate . 0");
cmd(win, "update");
tkclient->onscreen(win, nil);
tkclient->startinput(win, "kbd"::"ptr"::nil);
for (;;) alt {
s := <-win.ctxt.kbd =>
tk->keyboard(win, s);
s := <-win.ctxt.ptr =>
tk->pointer(win, *s);
s := <-win.ctxt.ctl or
s = <-win.wreq or
s = <-winctl =>
tkclient->wmctl(win, s);
line := <-updatech =>
(n, toks) := sys->tokenize(line, " ");
if (toks == nil)
continue;
case hd toks {
"clienttype" =>
chat.addtext("starting " + hd tl toks + " session...\n");
cmd(win, "update");
path := CLIENTDIR + "/" + hd tl toks + ".dis";
mod := load Command path;
if (mod == nil) {
chat.addtext(sys->sprint("could not load %s: %r\n", path));
chat.addtext("bye bye\n");
cliquefd = nil;
} else {
win = nil;
chat = nil;
startclient(mod, hd tl toks :: mnt :: dir :: tl tl toks);
exit;
}
"chat" =>
chat.addtext(hd tl toks + ": " + concat(tl tl toks) + "\n");
"title" =>
tkclient->settitle(win, "Gather " + concat(tl toks));
"join" or
"leave" or
"watch" or
"unwatch" =>
chat.addtext(line + "\n");
* =>
chat.addtext("unknown update: " + line + "\n");
}
cmd(win, "update");
c := <-chatevent =>
lines := chat.event(c);
for (; lines != nil; lines = tl lines)
cliquecmd("chat " + hd lines, chat);
c := <-ech =>
cliquecmd(c, chat);
}
}
cliquecmd(s: string, chat: ref Cmdline)
{
if (sys->fprint(cliquefd, "%s", s) == -1) {
chat.addtext(sys->sprint("command failed: %r\n"));
cmd(chat.top, "update");
}
}
prefixed(s: string, prefix: string): int
{
return len s >= len prefix && s[0:len prefix] == prefix;
}
readproc(updatech: chan of string)
{
buf := array[Sys->ATOMICIO] of byte;
while ((n := sys->read(cliquefd, buf, Sys->ATOMICIO)) > 0) {
(nil, lines) := sys->tokenize(string buf[0:n], "\n");
for (; lines != nil; lines = tl lines) {
updatech <-= hd lines;
if (prefixed(hd lines, "clienttype"))
exit;
}
}
updatech <-= nil;
}
startclient(mod: Command, argv: list of string)
{
{
mod->init(drawctxt, argv);
} exception e {
"*" =>
sys->print("client %s broken: %s\n", hd argv, e);
}
}
cmd(win: ref Tk->Toplevel, s: string): string
{
r := tk->cmd(win, s);
if(len r > 0 && r[0] == '!')
sys->print("error executing '%s': %s\n", s, r[1:]);
return r;
}
concat(l: list of string): string
{
if (l == nil)
return nil;
s := hd l;
for (l = tl l; l != nil; l = tl l)
s += " " + hd l;
return s;
}
|
