43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
package container // import "github.com/docker/docker/container"
|
|
|
|
import (
|
|
"strings"
|
|
)
|
|
|
|
// ReplaceOrAppendEnvValues returns the defaults with the overrides either
|
|
// replaced by env key or appended to the list
|
|
func ReplaceOrAppendEnvValues(defaults, overrides []string) []string {
|
|
cache := make(map[string]int, len(defaults))
|
|
for i, e := range defaults {
|
|
parts := strings.SplitN(e, "=", 2)
|
|
cache[parts[0]] = i
|
|
}
|
|
|
|
for _, value := range overrides {
|
|
// Values w/o = means they want this env to be removed/unset.
|
|
if !strings.Contains(value, "=") {
|
|
if i, exists := cache[value]; exists {
|
|
defaults[i] = "" // Used to indicate it should be removed
|
|
}
|
|
continue
|
|
}
|
|
|
|
// Just do a normal set/update
|
|
parts := strings.SplitN(value, "=", 2)
|
|
if i, exists := cache[parts[0]]; exists {
|
|
defaults[i] = value
|
|
} else {
|
|
defaults = append(defaults, value)
|
|
}
|
|
}
|
|
|
|
// Now remove all entries that we want to "unset"
|
|
for i := 0; i < len(defaults); i++ {
|
|
if defaults[i] == "" {
|
|
defaults = append(defaults[:i], defaults[i+1:]...)
|
|
i--
|
|
}
|
|
}
|
|
|
|
return defaults
|
|
}
|