forked from hashicorp/consul
/
patch_hcl.go
73 lines (66 loc) · 1.47 KB
/
patch_hcl.go
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package config
import (
"fmt"
)
func patchSliceOfMaps(m map[string]interface{}, skip []string) map[string]interface{} {
return patchValue("", m, skip).(map[string]interface{})
}
func patchValue(name string, v interface{}, skip []string) interface{} {
// fmt.Printf("%q: %T\n", name, v)
switch x := v.(type) {
case map[string]interface{}:
if len(x) == 0 {
return x
}
mm := make(map[string]interface{})
for k, v := range x {
key := k
if name != "" {
key = name + "." + k
}
mm[k] = patchValue(key, v, skip)
}
return mm
case []interface{}:
if len(x) == 0 {
return nil
}
if strSliceContains(name, skip) {
for i, y := range x {
x[i] = patchValue(name, y, skip)
}
return x
}
if _, ok := x[0].(map[string]interface{}); !ok {
return x
}
if len(x) > 1 {
panic(fmt.Sprintf("%s: []map[string]interface{} with more than one element not supported: %s", name, v))
}
return patchValue(name, x[0], skip)
case []map[string]interface{}:
if len(x) == 0 {
return nil
}
if strSliceContains(name, skip) {
for i, y := range x {
x[i] = patchValue(name, y, skip).(map[string]interface{})
}
return x
}
if len(x) > 1 {
panic(fmt.Sprintf("%s: []map[string]interface{} with more than one element not supported: %s", name, v))
}
return patchValue(name, x[0], skip)
default:
return v
}
}
func strSliceContains(s string, v []string) bool {
for _, vv := range v {
if s == vv {
return true
}
}
return false
}