1 package match
2
3 import (
4 "fmt"
5 "unicode/utf8"
6 )
7
8 type Max struct {
9 Limit int
10 }
11
12 func NewMax(l int) Max {
13 return Max{l}
14 }
15
16 func (self Max) Match(s string) bool {
17 var l int
18 for range s {
19 l += 1
20 if l > self.Limit {
21 return false
22 }
23 }
24
25 return true
26 }
27
28 func (self Max) Index(s string) (int, []int) {
29 segments := acquireSegments(self.Limit + 1)
30 segments = append(segments, 0)
31 var count int
32 for i, r := range s {
33 count++
34 if count > self.Limit {
35 break
36 }
37 segments = append(segments, i+utf8.RuneLen(r))
38 }
39
40 return 0, segments
41 }
42
43 func (self Max) Len() int {
44 return lenNo
45 }
46
47 func (self Max) String() string {
48 return fmt.Sprintf("<max:%d>", self.Limit)
49 }
50
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