/
env.go
67 lines (56 loc) · 1.5 KB
/
env.go
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package opts
import (
"fmt"
"strings"
)
// ParseEnvs parses the env slice in container's config.
func ParseEnvs(envs []string) ([]string, error) {
results := []string{}
for _, env := range envs {
result, err := parseEnv(env)
if err != nil {
return nil, err
}
results = append(results, result)
}
return results, nil
}
// parseEnv parses single elements of env slice.
func parseEnv(env string) (string, error) {
env = strings.TrimSpace(env)
if len(env) == 0 {
return "", fmt.Errorf("invalid env: env cannot be empty")
}
arr := strings.SplitN(env, "=", 2)
if arr[0] == "" {
return "", fmt.Errorf("invalid env %s: key of env cannot be empty", env)
}
if len(arr) == 1 {
// no matter it is "KEY=" or just "KEY", both are valid.
return env, nil
}
return fmt.Sprintf("%s=%s", arr[0], arr[1]), nil
}
// ValidSliceEnvsToMap converts slice envs to be map
// assuming that the input are always valid with a char of '='.
func ValidSliceEnvsToMap(envs []string) map[string]string {
results := make(map[string]string)
for _, env := range envs {
arr := strings.SplitN(env, "=", 2)
results[arr[0]] = arr[1]
}
return results
}
// ValidMapEnvsToSlice converts valid map envs to slice.
func ValidMapEnvsToSlice(envs map[string]string) []string {
results := make([]string, 0)
for key, value := range envs {
results = append(results, fmt.Sprintf("%s=%s", key, value))
}
return results
}
// ValidateEnv verifies the correct of env
func ValidateEnv(map[string]string) error {
// TODO
return nil
}