1 files changed, 64 insertions, 0 deletions
diff --git a/appl/cmd/fs/filter.b b/appl/cmd/fs/filter.b
new file mode 100644
index 00000000..9275cc7f
--- /dev/null
+++ b/appl/cmd/fs/filter.b
@@ -0,0 +1,64 @@
+implement Fsmodule;
+include "sys.m";
+	sys: Sys;
+include "draw.m";
+include "sh.m";
+include "fslib.m";
+	fsfilter: Fsfilter;
+	fslib: Fslib;
+	Report, Value, type2s, quit: import fslib;
+	Fschan, Fsdata, Entrychan, Entry,
+	Gatechan, Gatequery, Nilentry, Option,
+	Next, Down, Skip, Quit: import Fslib;
+
+
+Query: adt {
+	gate: Gatechan;
+	dflag: int;
+	reply: chan of int;
+	query: fn(q: self ref Query, d: ref Sys->Dir, name: string, depth: int): int;
+};
+
+types(): string
+{
+	return "xpx-d";
+}
+
+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;
+	fslib = load Fslib Fslib->PATH;
+	if(fslib == nil)
+		badmod(Fslib->PATH);
+	fsfilter = load Fsfilter Fsfilter->PATH;
+	if(fsfilter == nil)
+		badmod(Fsfilter->PATH);
+}
+
+run(nil: ref Draw->Context, nil: ref Report,
+			opts: list of Option, args: list of ref Value): ref Value
+{
+	dst := chan of (Fsdata, chan of int);
+	spawn filterproc((hd tl args).x().i, dst, (hd args).p().i, opts != nil);
+	return ref Value.X(dst);
+}
+
+filterproc(src, dst: Fschan, gate: Gatechan, dflag: int)
+{
+	fsfilter->filter(ref Query(gate, dflag, chan of int), src, dst);
+	gate <-= ((nil, nil, 0), nil);
+}
+
+Query.query(q: self ref Query, d: ref Sys->Dir, name: string, depth: int): int
+{
+	if(depth == 0 || (q.dflag && (d.mode & Sys->DMDIR)))
+		return 1;
+	q.gate <-= ((d, name, depth), q.reply);
+	return <-q.reply;
+}