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28 lines
529 B
Go
28 lines
529 B
Go
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package evaluator
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import (
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"fmt"
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"regexp"
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)
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// final evaluator signature for both param types and param funcs
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type ParamEvaluator func(paramValue string) bool
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func NewParamEvaluatorFromRegexp(expr string) (ParamEvaluator, error) {
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if expr == "" {
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return nil, fmt.Errorf("empty regex expression")
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}
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// add the last $ if missing (and not wildcard(?))
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if i := expr[len(expr)-1]; i != '$' && i != '*' {
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expr += "$"
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}
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r, err := regexp.Compile(expr)
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if err != nil {
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return nil, err
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}
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return r.MatchString, nil
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}
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