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implement Plumb;
include "sys.m";
sys: Sys;
include "draw.m";
include "arg.m";
arg: Arg;
include "plumbmsg.m";
plumbmsg: Plumbmsg;
Msg, Attr: import plumbmsg;
include "workdir.m";
workdir: Workdir;
Plumb: module
{
init: fn(nil: ref Draw->Context, nil: list of string);
};
usage()
{
sys->fprint(stderr(), "Usage: plumb [-s src] [-d dest] [-D dir] [-k kind] [-a name val] ... data ...\n");
raise "fail:usage";
}
init(nil: ref Draw->Context, args: list of string)
{
sys = load Sys Sys->PATH;
arg = load Arg Arg->PATH;
if(arg == nil)
nomod(Arg->PATH);
plumbmsg = load Plumbmsg Plumbmsg->PATH;
if(plumbmsg == nil)
nomod(Plumbmsg->PATH);
workdir = load Workdir Workdir->PATH;
if(workdir == nil)
nomod(Workdir->PATH);
if(plumbmsg->init(1, nil, 0) < 0)
err(sys->sprint("can't connect to plumb: %r"));
attrs: list of ref Attr;
m := ref Msg("plumb", nil, workdir->init(), "text", nil, nil);
arg->init(args);
while((c := arg->opt()) != 0)
case c {
's' =>
m.src = use(arg->arg(), c);
'd' =>
m.dst = use(arg->arg(), c);
'D' =>
m.dir = use(arg->arg(), c);
'k' =>
m.kind = use(arg->arg(), c);
'a' =>
name := use(arg->arg(), c);
val := use(arg->arg(), c);
attrs = tack(attrs, ref Attr(name, val));
* =>
usage();
}
args = arg->argv();
if(args == nil)
usage();
nb := 0;
for(a := args; a != nil; a = tl a)
nb += len array of byte hd a;
nb += len args;
buf := array[nb] of byte;
nb = 0;
for(a = args; a != nil; a = tl a){
b := array of byte hd a;
buf[nb++] = byte ' ';
buf[nb:] = b;
nb += len b;
}
m.data = buf[1:];
m.attr = plumbmsg->attrs2string(attrs);
if(m.send() < 0)
err(sys->sprint("can't plumb message: %r"));
}
tack(l: list of ref Attr, v: ref Attr): list of ref Attr
{
if(l == nil)
return v :: nil;
return hd l :: tack(tl l, v);
}
use(s: string, c: int): string
{
if(s == nil)
err(sys->sprint("missing value for -%c", c));
return s;
}
nomod(m: string)
{
err(sys->sprint("can't load %s: %r\n", m));
}
err(s: string)
{
sys->fprint(stderr(), "plumb: %s\n", s);
raise "fail:error";
}
stderr(): ref Sys->FD
{
return sys->fildes(2);
}
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