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package hook
import (
"errors"
"strconv"
"tunnel/pkg/server/env"
"tunnel/pkg/server/opts"
"tunnel/pkg/server/queue"
)
const splitDefaultSize = 1024
var errBadSize = errors.New("bad size value")
type splitHook struct {
size int
}
func (h *splitHook) Send(rq, wq queue.Q) error {
for b := range rq {
var upto int
for n := 0; n < len(b); n = upto {
upto += h.size
if upto > len(b) {
upto = len(b)
}
wq <- b[n:upto]
}
}
return nil
}
func (h *splitHook) Open(env.Env) (interface{}, error) {
return h, nil
}
func newSplitHook(opts opts.Opts, env env.Env) (hook, error) {
size := splitDefaultSize
if s, ok := opts["size"]; ok {
var err error
if size, err = strconv.Atoi(s); err != nil || size <= 0 {
return nil, errBadSize
}
}
return &splitHook{size: size}, nil
}
func init() {
register("split", newSplitHook)
}
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