open-consul/lib/patch_hcl.go

92 lines
1.9 KiB
Go

package lib
import (
"fmt"
"strings"
)
func PatchSliceOfMaps(m map[string]interface{}, skip []string, skipTree []string) map[string]interface{} {
lowerSkip := make([]string, len(skip))
lowerSkipTree := make([]string, len(skipTree))
for i, val := range skip {
lowerSkip[i] = strings.ToLower(val)
}
for i, val := range skipTree {
lowerSkipTree[i] = strings.ToLower(val)
}
return patchValue("", m, lowerSkip, lowerSkipTree).(map[string]interface{})
}
func patchValue(name string, v interface{}, skip []string, skipTree []string) interface{} {
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, skipTree)
}
return mm
case []interface{}:
if len(x) == 0 {
return nil
}
if strSliceContains(name, skipTree) {
return x
}
if strSliceContains(name, skip) {
for i, y := range x {
x[i] = patchValue(name, y, skip, skipTree)
}
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, skipTree)
case []map[string]interface{}:
if len(x) == 0 {
return nil
}
if strSliceContains(name, skipTree) {
return x
}
if strSliceContains(name, skip) {
for i, y := range x {
x[i] = patchValue(name, y, skip, skipTree).(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, skipTree)
default:
return v
}
}
func strSliceContains(s string, v []string) bool {
lower := strings.ToLower(s)
for _, vv := range v {
if lower == vv {
return true
}
}
return false
}