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env.go
62 lines (48 loc) · 1019 Bytes
/
env.go
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package helpers
import (
"fmt"
"sort"
"strings"
"github.com/convox/rack/pkg/structs"
)
func EnvDiff(a, b string) (string, error) {
ae := structs.Environment{}
be := structs.Environment{}
if err := ae.Load([]byte(strings.TrimSpace(a))); err != nil {
return "", err
}
if err := be.Load([]byte(strings.TrimSpace(b))); err != nil {
return "", err
}
adds := []string{}
changes := []string{}
removes := []string{}
for k := range be {
if v, ok := ae[k]; ok {
if be[k] != v {
changes = append(changes, k)
}
} else {
adds = append(adds, k)
}
}
for k := range ae {
if _, ok := be[k]; !ok {
removes = append(removes, k)
}
}
sort.Strings(adds)
sort.Strings(changes)
sort.Strings(removes)
desc := ""
for _, k := range adds {
desc = fmt.Sprintf("%s add:%s", desc, k)
}
for _, k := range changes {
desc = fmt.Sprintf("%s change:%s", desc, k)
}
for _, k := range removes {
desc = fmt.Sprintf("%s remove:%s", desc, k)
}
return strings.TrimSpace(desc), nil
}