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implement Print,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;
Print: module {};
typesig(): string
{
return "rfs";
}
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, errorc: chan of string,
nil: list of (int, list of ref Alphabet->Value),
args: list of ref Alphabet->Value): ref Alphabet->Value
{
r := chan of string;
fd := sys->fildes(int (hd tl args).s().i);
if(fd == nil){
report(errorc, sys->sprint("error: no such fd %q", (hd tl args).s().i));
return nil;
}
spawn printproc(r, (hd args).f().i, fd);
return ref Value.Vr(r);
}
printproc(r: chan of string, f: chan of ref Sys->FD, fd: ref Sys->FD)
{
if(<-r != nil){
<-f;
f <-= nil;
exit;
}
<-f;
f <-= fd;
r <-= nil;
}
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