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package server
import (
"strings"
"log"
)
type cmd struct {
name string
f func (r *request)
}
type node struct {
c *cmd
m map[string]*node
}
var cmds = newNode()
func newNode() *node {
return &node{m: map[string]*node{}}
}
func newCmd(f func (r *request), path ...string) {
node := cmds
for _, name := range path {
v := node.m[name]
if v == nil {
v = newNode()
node.m[name] = v
}
node = v
}
if node.c != nil {
s := strings.Join(path, " ")
log.Panicf("handler already registered at '%s'", s)
}
node.c = &cmd{
name: strings.Join(path, " "),
f: f,
}
}
func getCmd(path []string) (*cmd, []string) {
node := cmds
for n, name := range path {
node = node.m[name]
if node == nil {
return nil, nil
}
if node.c != nil {
return node.c, path[n + 1:]
}
}
return nil, nil
}
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