mirror of https://github.com/divan/expvarmon.git
29 lines
621 B
Go
29 lines
621 B
Go
package main
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import (
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"errors"
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"strings"
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)
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// ParseVars returns parsed and validated slice of strings with
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// variables names that will be used for monitoring.
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func ParseVars(def, extra string) ([]VarName, error) {
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if def == "" && extra == "" {
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return nil, errors.New("no vars specified")
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}
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fields := func(s string) []VarName {
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ss := strings.FieldsFunc(s, func(r rune) bool { return r == ',' })
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ret := []VarName{}
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for _, str := range ss {
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ret = append(ret, VarName(str))
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}
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return ret
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}
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var ret []VarName
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ret = append(ret, fields(def)...)
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ret = append(ret, fields(extra)...)
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return ret, nil
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}
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