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implement Echo, Mainmodule;
include "sys.m";
sys: Sys;
include "draw.m";
include "sh.m";
include "alphabet/reports.m";
reports: Reports;
Report, report: import reports;
include "alphabet.m";
alphabet: Alphabet;
Value: import alphabet;
Echo: module {};
typesig(): string
{
return "fs-n";
}
init()
{
sys = load Sys Sys->PATH;
alphabet = load Alphabet Alphabet->PATH;
reports = load Reports Reports->PATH;
}
quit()
{
}
run(nil: ref Draw->Context, nil: ref Reports->Report, nil: chan of string,
opts: list of (int, list of ref Alphabet->Value),
args: list of ref Alphabet->Value): ref Alphabet->Value
{
f := chan of ref Sys->FD;
s := (hd args).s().i;
if(opts == nil)
s[len s] = '\n';
spawn echoproc(f, s);
return ref Value.Vf(f);
}
echoproc(f: chan of ref Sys->FD, s: string)
{
f <-= nil;
fd := <-f;
if(fd == nil)
exit;
sys->fprint(fd, "%s", s);
sys->write(fd, array[0] of byte, 0);
}
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