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36 lines
792 B
Go
36 lines
792 B
Go
package command
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import (
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"errors"
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"io"
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"io/ioutil"
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"strings"
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)
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var (
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ErrNoAvailSrc = errors.New("no available argument and stdin")
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)
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// trimsplit slices s into all substrings separated by sep and returns a
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// slice of the substrings between the separator with all leading and trailing
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// white space removed, as defined by Unicode.
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func trimsplit(s, sep string) []string {
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raw := strings.Split(s, ",")
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trimmed := make([]string, 0)
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for _, r := range raw {
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trimmed = append(trimmed, strings.TrimSpace(r))
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}
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return trimmed
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}
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func argOrStdin(args []string, stdin io.Reader, i int) (string, error) {
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if i < len(args) {
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return args[i], nil
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}
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bytes, err := ioutil.ReadAll(stdin)
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if string(bytes) == "" || err != nil {
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return "", ErrNoAvailSrc
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}
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return string(bytes), nil
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}
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