Tinkerbell.Sandbox/cmd/bump-version/envfile/envfile.go

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package envfile
import (
"fmt"
"sort"
"strings"
"github.com/joho/godotenv"
)
type EnvFile map[string]string
func ReadEnvFile(f string) (EnvFile, error) {
myEnv, err := godotenv.Read(f)
if err != nil {
return nil, err
}
return myEnv, nil
}
// Copied and modified from https://github.com/joho/godotenv
const doubleQuoteSpecialChars = "\\\n\r\"!$`"
func Marshal(envMap map[string]string) (string, error) {
lines := make([]string, 0, len(envMap))
for k, v := range envMap {
lines = append(lines, fmt.Sprintf(`export %s="%s"`, k, doubleQuoteEscape(v)))
}
sort.Strings(lines)
return strings.Join(lines, "\n"), nil
}
func doubleQuoteEscape(line string) string {
for _, c := range doubleQuoteSpecialChars {
toReplace := "\\" + string(c)
if c == '\n' {
toReplace = `\n`
}
if c == '\r' {
toReplace = `\r`
}
line = strings.Replace(line, string(c), toReplace, -1)
}
return line
}
// End of the part copied from https://github.com/joho/godotenv