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implement Run, Fsmodule;
include "sys.m";
sys: Sys;
include "draw.m";
include "sh.m";
sh: Sh;
Context: import sh;
include "alphabet/reports.m";
Report: import Reports;
include "alphabet/fs.m";
fs: Fs;
Value: import fs;
Fschan, Fsdata, Entrychan, Entry,
Gatechan, Gatequery, Nilentry, Option,
Next, Down, Skip, Quit: import Fs;
Run: module {};
types(): string
{
return "sc";
}
badmod(p: string)
{
sys->fprint(sys->fildes(2), "fs: size: cannot load %s: %r\n", p);
raise "fail:bad module";
}
init()
{
sys = load Sys Sys->PATH;
fs = load Fs Fs->PATH;
if(fs == nil)
badmod(Fs->PATH);
fs->init();
sh = load Sh Sh->PATH;
if(sh == nil)
badmod(Sh->PATH);
sh->initialise();
}
run(drawctxt: ref Draw->Context, nil: ref Report,
nil: list of Option, args: list of ref Value): ref Value
{
c := (hd args).c().i;
ctxt := Context.new(drawctxt);
ctxt.setlocal("s", nil);
{
ctxt.run(ref Sh->Listnode(c, nil)::nil, 0);
} exception e {
"fail:*" =>
sys->fprint(sys->fildes(2), "fs: run: exception %q raised in %s\n", e[5:], sh->cmd2string(c));
return nil;
}
sl := ctxt.get("s");
if(sl == nil || tl sl != nil){
sys->fprint(sys->fildes(2), "fs: run: $s has %d members; exactly one is required\n", len sl);
return nil;
}
s := (hd sl).word;
if(s == nil && (hd sl).cmd != nil)
s = sh->cmd2string((hd sl).cmd);
return ref Value.Vs(s);
}
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