youtubebeat/vendor/github.com/gobwas/glob/match/every_of.go

99 lines
1.7 KiB
Go

package match
import (
"fmt"
)
type EveryOf struct {
Matchers Matchers
}
func NewEveryOf(m ...Matcher) EveryOf {
return EveryOf{Matchers(m)}
}
func (self *EveryOf) Add(m Matcher) error {
self.Matchers = append(self.Matchers, m)
return nil
}
func (self EveryOf) Len() (l int) {
for _, m := range self.Matchers {
if ml := m.Len(); l > 0 {
l += ml
} else {
return -1
}
}
return
}
func (self EveryOf) Index(s string) (int, []int) {
var index int
var offset int
// make `in` with cap as len(s),
// cause it is the maximum size of output segments values
next := acquireSegments(len(s))
current := acquireSegments(len(s))
sub := s
for i, m := range self.Matchers {
idx, seg := m.Index(sub)
if idx == -1 {
releaseSegments(next)
releaseSegments(current)
return -1, nil
}
if i == 0 {
// we use copy here instead of `current = seg`
// cause seg is a slice from reusable buffer `in`
// and it could be overwritten in next iteration
current = append(current, seg...)
} else {
// clear the next
next = next[:0]
delta := index - (idx + offset)
for _, ex := range current {
for _, n := range seg {
if ex+delta == n {
next = append(next, n)
}
}
}
if len(next) == 0 {
releaseSegments(next)
releaseSegments(current)
return -1, nil
}
current = append(current[:0], next...)
}
index = idx + offset
sub = s[index:]
offset += idx
}
releaseSegments(next)
return index, current
}
func (self EveryOf) Match(s string) bool {
for _, m := range self.Matchers {
if !m.Match(s) {
return false
}
}
return true
}
func (self EveryOf) String() string {
return fmt.Sprintf("<every_of:[%s]>", self.Matchers)
}