photoprism/pkg/sanitize/query.go

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900 B
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package sanitize
import (
"regexp"
"strings"
)
// spaced returns the string padded with a space left and right.
func spaced(s string) string {
return Space + s + Space
}
// replace performs a case-insensitive string replacement.
func replace(subject string, search string, replace string) string {
return regexp.MustCompile("(?i)"+search).ReplaceAllString(subject, replace)
}
// Query replaces search operator with default symbols.
func Query(s string) string {
if s == "" || reject(s, MaxLength) {
return Empty
}
// Normalize.
s = replace(s, spaced(EnOr), Or)
s = replace(s, spaced(EnOr), Or)
s = replace(s, spaced(EnAnd), And)
s = replace(s, spaced(EnWith), And)
s = replace(s, spaced(EnIn), And)
s = replace(s, spaced(EnAt), And)
s = strings.ReplaceAll(s, SpacedPlus, And)
s = strings.ReplaceAll(s, "%", "*")
// Trim.
return strings.Trim(s, "+&|-=$^(){}\\<>,;: \n\r\t")
}