1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
package mooh
import (
"errors"
"fmt"
"net/http"
"strings"
)
type Dispatcher struct {
Routes []Route
RouteAccess map[string]*Route
}
func BuildDispatcher() Dispatcher {
router := Dispatcher{}
router.RouteAccess = map[string]*Route{}
return router
}
func (self *Dispatcher) GetRoute(path string) *Route {
r := self.RouteAccess[path]
if r != nil {
return r
}
return nil
}
func (self *Dispatcher) AddRoute(path string, method string, code func(*Request) (Response, error)) {
r := self.GetRoute(path)
if r == nil {
route := MakeRoute(path, method, code)
self.Routes = append(self.Routes, route)
self.RouteAccess[path] = &route
} else {
r.Executors[method] = code
r.Methods[method] = true
}
}
func (self *Dispatcher) Match(request *http.Request) (*Match, error) {
matches := []*Match{}
method := request.Method
components := strings.Split(request.URL.Path, "/")
for _, r := range self.Routes {
match := r.Match(method, components)
if match != nil {
matches = append(matches, match)
}
}
if len(matches) == 0 {
return nil, nil
} else if len(matches) == 1 {
return matches[0], nil
} else {
return self.disambiguateMatches(request.URL.Path, matches)
}
return nil, nil
}
func (self *Dispatcher) disambiguateMatches(path string, matches []*Match) (*Match, error) {
min := -1
found := []*Match{}
for _, m := range matches {
req := m.Route.RequiredNamedComponents
vars := len(req)
if min == -1 || vars < min {
found = append(found, m)
min = vars
} else if vars == min {
found = append(found, m)
}
}
if len(found) > 1 {
msg := fmt.Sprintf("Ambiguous match: path %s could match any of:", path)
for _, f := range found {
msg = fmt.Sprintf("%s %s", msg, f.Route.Path)
}
err := errors.New(msg)
return nil, err
}
return found[0], nil
}
// func (*dispatcher) ListRoutes() {
// }
// func (*dispatcher) AddRoutes() {
// }
// func (self *dispatcher) UriFor() {
// }
|
