mirror of https://github.com/status-im/consul.git
43 lines
738 B
Go
43 lines
738 B
Go
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package helpers
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import (
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"bytes"
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"fmt"
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"io"
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"io/ioutil"
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"os"
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)
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func LoadDataSource(data string, testStdin io.Reader) (string, error) {
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var stdin io.Reader = os.Stdin
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if testStdin != nil {
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stdin = testStdin
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}
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// Handle empty quoted shell parameters
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if len(data) == 0 {
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return "", nil
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}
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switch data[0] {
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case '@':
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data, err := ioutil.ReadFile(data[1:])
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if err != nil {
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return "", fmt.Errorf("Failed to read file: %s", err)
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} else {
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return string(data), nil
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}
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case '-':
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if len(data) > 1 {
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return data, nil
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}
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var b bytes.Buffer
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if _, err := io.Copy(&b, stdin); err != nil {
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return "", fmt.Errorf("Failed to read stdin: %s", err)
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}
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return b.String(), nil
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default:
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return data, nil
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}
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}
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