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filter.go
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filter.go
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package prompt
import "strings"
// Filter is the type to filter the prompt.Suggestion array.
type Filter func([]Suggest, string, bool) []Suggest
// FilterHasPrefix checks whether the string completions.Text begins with sub.
func FilterHasPrefix(completions []Suggest, sub string, ignoreCase bool) []Suggest {
if sub == "" {
return completions
}
if ignoreCase {
sub = strings.ToUpper(sub)
}
ret := make([]Suggest, 0, len(completions))
for i := range completions {
c := completions[i].Text
if ignoreCase {
c = strings.ToUpper(c)
}
if strings.HasPrefix(c, sub) {
ret = append(ret, completions[i])
}
}
return ret
}
// FilterHasSuffix checks whether the completion.Text ends with sub.
func FilterHasSuffix(completions []Suggest, sub string, ignoreCase bool) []Suggest {
if sub == "" {
return completions
}
if ignoreCase {
sub = strings.ToUpper(sub)
}
ret := make([]Suggest, 0, len(completions))
for i := range completions {
c := completions[i].Text
if ignoreCase {
c = strings.ToUpper(c)
}
if strings.HasSuffix(c, sub) {
ret = append(ret, completions[i])
}
}
return ret
}
// FilterContains checks whether the completion.Text contains sub.
func FilterContains(completions []Suggest, sub string, ignoreCase bool) []Suggest {
if sub == "" {
return completions
}
if ignoreCase {
sub = strings.ToUpper(sub)
}
ret := make([]Suggest, 0, len(completions))
for i := range completions {
c := completions[i].Text
if ignoreCase {
c = strings.ToUpper(c)
}
if strings.Contains(c, sub) {
ret = append(ret, completions[i])
}
}
return ret
}