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|
implement Samterm;
include "sys.m";
sys: Sys;
fprint, sprint, FD: import sys;
stderr, logfd: ref FD;
include "draw.m";
draw: Draw;
include "samterm.m";
include "samtk.m";
samtk: Samtk;
include "samstub.m";
samstub: Samstub;
Samio, Sammsg: import samstub;
samio: ref Samio;
ctxt: ref Context;
init(context: ref draw->Context, nil: list of string)
{
recvsam: chan of ref Sammsg;
sys = load Sys Sys->PATH;
draw = load Draw Draw->PATH;
stderr = sys->fildes(2);
logfd = sys->create("samterm.log", sys->OWRITE, 8r666);
if (logfd == nil) {
fprint(stderr, "Can't create samterm.log\n");
logfd = stderr;
}
fprint(logfd, "Samterm started\n");
pgrp := sys->pctl(sys->NEWPGRP, nil);
ctxt = ref Context(
context,
1000, # initial tag
0, # lock
nil, # keysel
nil, # scrollsel
nil, # buttonsel
nil, # menu2sel
nil, # menu3sel
nil, # titlesel
nil, # tags
nil, # menus
nil, # texts
nil, # cmd
nil, # which
nil, # work
pgrp, # pgrp
logfd # logging file descriptor
);
samtk = load Samtk Samtk->PATH;
if (samtk == nil) {
fprint(stderr, "Can't load %s\n", Samtk->PATH);
return;
}
samtk->init(ctxt);
samstub = load Samstub Samstub->PATH;
if (samstub == nil) {
fprint(stderr, "Can't load %s\n", Samstub->PATH);
return;
}
samstub->init(ctxt);
(samio, recvsam) = samstub->start();
if (samio == nil) {
fprint(stderr, "couldn't start samstub\n");
return;
}
samstub->outTs(samstub->Tversion, samstub->VERSION);
samstub->startcmdfile();
samstub->setlock();
for(;;) if (ctxt.lock == 0) alt {
(win, menu) := <-ctxt.titlesel =>
samstub->cleanout();
fl := ctxt.flayers[win];
tag := fl.tag;
if ((i := samtk->whichtext(tag)) < 0)
samtk->panic("samterm: whichtext");
t := ctxt.texts[i];
samtk->newcur(t, fl);
case menu {
"exit" =>
if (ctxt.flayers[win].tag == 0) {
samstub->outT0(samstub->Texit);
f := sprint("#p/%d/ctl", pgrp);
if ((fd := sys->open(f, sys->OWRITE)) != nil)
sys->write(fd, array of byte "killgrp\n", 8);
return;
}
samstub->close(win, tag);
"resize" =>
samtk->resize(fl);
samstub->scrollto(fl, fl.scope.first);
"task" =>
spawn samtk->titlectl(win, menu);
* =>
samtk->titlectl(win, menu);
}
(win, m1) := <-ctxt.buttonsel =>
samstub->cleanout();
fl := ctxt.flayers[win];
tag := fl.tag;
if (samtk->buttonselect(fl, m1)) {
samstub->outTsl(samstub->Tdclick, tag, fl.dot.first);
samstub->setlock();
}
(win, m2) := <-ctxt.menu2sel =>
samstub->cleanout();
fl := ctxt.flayers[win];
tag := fl.tag;
if ((i := samtk->whichtext(tag)) < 0)
samtk->panic("samterm: whichtext");
t := ctxt.texts[i];
samtk->newcur(t, fl);
case m2 {
"cut" =>
samstub->cut(t, fl);
"paste" =>
samstub->paste(t, fl);
"snarf" =>
samstub->snarf(t, fl);
"look" =>
samstub->look(t, fl);
"exch" =>
fprint(ctxt.logfd, "debug -- exch: %d, %s\n", win, m2);
"send" =>
samstub->send(t, fl);
"search" =>
samstub->search(t, fl);
* =>
samtk->panic("samterm: editmenu");
}
(win, m3) := <-ctxt.menu3sel =>
samstub->cleanout();
fl := ctxt.flayers[win];
tag := fl.tag;
if ((i := samtk->whichtext(tag)) < 0)
samtk->panic("samterm: whichtext");
t := ctxt.texts[i];
samtk->newcur(t, fl);
case m3 {
"new" =>
samstub->startnewfile();
"zerox" =>
samstub->zerox(t);
"close" =>
if (win != 0) {
samstub->close(win, tag);
}
"write" =>
samstub->outTs(samstub->Twrite, tag);
samstub->setlock();
* =>
for (i = 0; i < len ctxt.menus; i++) {
if (ctxt.menus[i].name == m3) {
break;
}
}
if (i == len ctxt.menus)
samtk->panic("init: can't find m3");
t = ctxt.menus[i].text;
t.flayers = samtk->append(tl t.flayers, hd t.flayers);
samtk->newcur(t, hd t.flayers);
}
(win, c) := <-ctxt.keysel =>
if (ctxt.which != ctxt.flayers[win]) {
fprint(ctxt.logfd, "probably can't happen\n");
samstub->cleanout();
tag := ctxt.flayers[win].tag;
if ((i := samtk->whichtext(tag)) < 0)
samtk->panic("samterm: whichtext");
samtk->newcur(ctxt.texts[i], ctxt.flayers[win]);
}
samstub->keypress(c[1:len c -1]);
(win, c) := <-ctxt.scrollsel =>
if (ctxt.which != ctxt.flayers[win]) {
samstub->cleanout();
tag := ctxt.flayers[win].tag;
if ((i := samtk->whichtext(tag)) < 0)
samtk->panic("samterm: whichtext");
samtk->newcur(ctxt.texts[i], ctxt.flayers[win]);
}
(pos, lines) := samtk->scroll(ctxt.which, c);
if (lines > 0) {
samstub->outTsll(samstub->Torigin,
ctxt.which.tag, pos, lines);
samstub->setlock();
} else if (pos != -1)
samstub->scrollto(ctxt.which, pos);
h := <-recvsam =>
if (samstub->inmesg(h)) {
samstub->outT0(samstub->Texit);
fname := sprint("#p/%d/ctl", pgrp);
if ((fdesc := sys->open(fname, sys->OWRITE)) != nil)
sys->write(fdesc, array of byte "killgrp\n", 8);
return;
}
} else {
h := <-recvsam;
if (samstub->inmesg(h)) {
samstub->outT0(samstub->Texit);
fname := sprint("#p/%d/ctl", pgrp);
if ((fdesc := sys->open(fname, sys->OWRITE)) != nil)
sys->write(fdesc, array of byte "killgrp\n", 8);
return;
}
}
}
|
