63 lines
1.1 KiB
Go
63 lines
1.1 KiB
Go
package configuration
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"strings"
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)
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// String represents a config string
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type String string
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// Parse parses current string and return the parsed result
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func (s String) Parse() (string, error) {
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ss := string(s)
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sSchemeLeadIdx := strings.Index(ss, "://")
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if sSchemeLeadIdx < 0 {
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return ss, nil
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}
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sSchemeLeadEnd := sSchemeLeadIdx + 3
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switch strings.ToLower(ss[:sSchemeLeadIdx]) {
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case "file":
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fPath, e := filepath.Abs(ss[sSchemeLeadEnd:])
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if e != nil {
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return ss, e
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}
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f, e := os.Open(fPath)
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if e != nil {
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return "", fmt.Errorf("Unable to open %s: %s", fPath, e)
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}
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defer f.Close()
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fData, e := ioutil.ReadAll(f)
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if e != nil {
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return "", fmt.Errorf("Unable to read from %s: %s", fPath, e)
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}
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return string(fData), nil
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case "enviroment": // You see what I did there. Remove this a later
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fallthrough
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case "environment":
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return os.Getenv(ss[sSchemeLeadEnd:]), nil
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case "literal":
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return ss[sSchemeLeadEnd:], nil
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default:
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return "", fmt.Errorf(
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"Scheme \"%s\" was unsupported", ss[:sSchemeLeadIdx])
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}
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}
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