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gitea/vendor/github.com/src-d/enry/v2/data/heuristics.go

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1.0 KiB

package data
import "github.com/src-d/enry/v2/data/rule"
// Heuristics implements a rule-based content matching engine.
// Heuristics is a number of sequntially applied rule.Heuristic where a
// matching one disambiguages language(s) for a single file extension.
type Heuristics []rule.Heuristic
// Match returns languages identified by the matching rule of the heuristic.
func (hs Heuristics) Match(data []byte) []string {
var matchedLangs []string
for _, heuristic := range hs {
if heuristic.Match(data) {
for _, langOrAlias := range heuristic.Languages() {
lang, ok := LanguageByAlias(langOrAlias)
if !ok { // should never happen
// reaching here means language name/alias in heuristics.yml
// is not consistent with languages.yml
// but we do not surface any such error at the API
continue
}
matchedLangs = append(matchedLangs, lang)
}
break
}
}
return matchedLangs
}
// matchString is a convenience used only in tests.
func (hs *Heuristics) matchString(data string) []string {
return hs.Match([]byte(data))
}