forked from mirror/glob
65 lines
1.1 KiB
Go
65 lines
1.1 KiB
Go
package match
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import (
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"fmt"
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"strings"
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)
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type PrefixSuffix struct {
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Prefix, Suffix string
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}
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func (self PrefixSuffix) Kind() Kind {
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return KindPrefixSuffix
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}
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func (self PrefixSuffix) Index(s string) (int, []int) {
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prefixIdx := strings.Index(s, self.Prefix)
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if prefixIdx == -1 {
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return -1, nil
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}
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var segments []int
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for sub := s[prefixIdx:]; ; {
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suffixIdx := strings.LastIndex(sub, self.Suffix)
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if suffixIdx == -1 {
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break
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}
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segments = append(segments, suffixIdx+len(self.Suffix))
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sub = s[:suffixIdx]
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}
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segLen := len(segments)
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if segLen == 0 {
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return -1, nil
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}
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resp := make([]int, segLen)
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for i, s := range segments {
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resp[segLen-i-1] = s
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}
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return prefixIdx, resp
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}
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func (self PrefixSuffix) Len() int {
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return -1
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}
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func (self PrefixSuffix) Search(s string) (i int, l int, ok bool) {
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if self.Match(s) {
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return 0, len(s), true
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}
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return
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}
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func (self PrefixSuffix) Match(s string) bool {
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return strings.HasPrefix(s, self.Prefix) && strings.HasSuffix(s, self.Suffix)
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}
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func (self PrefixSuffix) String() string {
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return fmt.Sprintf("<prefix_suffix:[%s,%s]>", self.Prefix, self.Suffix)
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}
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