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implement Clientmod;
include "sys.m";
sys: Sys;
include "draw.m";
draw: Draw;
Point, Rect, Display, Image: import draw;
include "tk.m";
tk: Tk;
include "tkclient.m";
tkclient: Tkclient;
include "../client.m";
include "commandline.m";
commandline: Commandline;
Cmdline: import commandline;
stderr: ref Sys->FD;
memberid := -1;
win: ref Tk->Toplevel;
client(ctxt: ref Draw->Context, argv: list of string, nil: int)
{
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, "chat: cannot load %s: %r\n", Tkclient->PATH);
sys->raise("fail:bad module");
}
commandline = load Commandline Commandline->PATH;
if (commandline == nil) {
sys->fprint(stderr, "chat: cannot load %s: %r\n", Commandline->PATH);
sys->raise("fail:bad module");
}
commandline->init();
tkclient->init();
client1(ctxt);
}
cmdlinech: chan of string;
cmdline: ref Cmdline;
client1(ctxt: ref Draw->Context)
{
cliquefd := sys->fildes(0);
sys->pctl(Sys->NEWPGRP, nil);
winctl: chan of string;
(win, winctl) = tkclient->toplevel(ctxt.screen, nil,
"Cards", Tkclient->Appl);
cmdlinech = chan of string;
srvcmd := chan of string;
spawn updateproc(cliquefd, srvcmd);
for (;;) alt {
c := <-cmdlinech =>
for (cmds := cmdline.event(c); cmds != nil; cmds = tl cmds)
cliquecmd(cliquefd, "say " + quote(hd cmds));
c := <-srvcmd =>
applyupdate(c);
cmd(win, "update");
c := <-winctl =>
if (c == "exit")
sys->write(cliquefd, array[0] of byte, 0);
tkclient->wmctl(win, c);
}
}
quote(s: string): string
{
for (i := 0; i < len s; i++)
if (s[i] == ' ')
s[i] = '_';
return s;
}
unquote(s: string): string
{
for (i := 0; i < len s; i++)
if (s[i] == '_')
s[i] = ' ';
return s;
}
cliquecmd(fd: ref Sys->FD, s: string): int
{
if (sys->fprint(fd, "%s\n", s) == -1) {
sys->print("chat: cmd error on '%s': %r\n", s);
return 0;
}
return 1;
}
updateproc(fd: ref Sys->FD, srvcmd: chan of string)
{
wfd := sys->open("/prog/" + string sys->pctl(0, nil) + "/wait", Sys->OREAD);
spawn updateproc1(fd, srvcmd);
buf := array[Sys->ATOMICIO] of byte;
n := sys->read(wfd, buf, len buf);
sys->print("updateproc process exited: %s\n", string buf[0:n]);
}
updateproc1(fd: ref Sys->FD, srvcmd: chan of string)
{
buf := array[Sys->ATOMICIO] of byte;
while ((n := sys->read(fd, buf, len buf)) > 0) {
(nil, lines) := sys->tokenize(string buf[0:n], "\n");
for (; lines != nil; lines = tl lines)
srvcmd <-= hd lines;
}
if (n < 0)
sys->fprint(stderr, "chat: error reading updates: %r\n");
sys->fprint(stderr, "chat: updateproc exiting\n");
}
applyupdate(s: string)
{
(nt, toks) := sys->tokenize(s, " ");
case hd toks {
"memberid" =>
# memberid clientid memberid name
memberid = int hd tl tl toks;
cmd(win, "frame .me");
cmd(win, "label .me.l -text {Type here}");
(cmdline, cmdlinech) = Cmdline.new(win, ".me.f", nil);
cmd(win, "pack .me -side top -fill x");
cmd(win, "pack .me.l -side top");
cmd(win, "pack .me.f -side top -fill both -expand 1 -anchor w");
"joinclique" =>
# joinclique cliqueid clientid memberid name
id := int hd tl tl tl toks;
name := hd tl tl tl tl toks;
if (id == memberid)
break;
f := "." + string id;
cmd(win, "frame " + f);
cmd(win, "label " + f + ".l -text '" + name);
tf := f + ".tf";
cmd(win, "frame " + tf);
cmd(win, "scrollbar " + tf + ".s -orient vertical -command {" + tf + ".t yview}");
cmd(win, "text " + tf + ".t -height 5h");
cmd(win, "pack " + f + ".l -side top");
cmd(win, "pack " + tf + ".s -side left -fill y");
cmd(win, "pack " + tf + ".t -side top -fill both -expand 1");
cmd(win, "pack " + tf + " -side top -fill both -expand 1");
cmd(win, "pack " + f + " -side top -fill both -expand 1");
"say" =>
# say memberid text
id := int hd tl toks;
if (id == memberid)
break;
t := "." + string id + ".tf.t";
cmd(win, t + " insert end '" + unquote(hd tl tl toks) + "\n");
cmd(win, t + " see end");
* =>
sys->fprint(stderr, "chat: unknown update message '%s'\n", s);
}
}
concat(v: list of string): string
{
if (v == nil)
return nil;
s := hd v;
for (v = tl v; v != nil; v = tl v)
s += " " + hd v;
return s;
}
kill(pid: int)
{
if ((fd := sys->open("/prog/"+string pid+"/ctl", Sys->OWRITE)) != nil)
sys->write(fd, array of byte "kill", 4);
}
showtk := 0;
cmd(top: ref Tk->Toplevel, s: string): string
{
if (showtk)
sys->print("tk: %s\n", s);
e := tk->cmd(top, s);
if (e != nil && e[0] == '!')
sys->fprint(stderr, "tk error %s on '%s'\n", e, s);
return e;
}
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