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fixed the nil value exception #4

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fixed the nil value exception #4

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12 changes: 11 additions & 1 deletion main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -10,16 +10,19 @@ import (
"strings"
)

// Expand expands the specified map
func Expand(value map[string]interface{}) map[string]interface{} {
return ExpandPrefixed(value, "")
}

// ExpandPrefixed expand the specified map with the givven prefix
func ExpandPrefixed(value map[string]interface{}, prefix string) map[string]interface{} {
m := make(map[string]interface{})
ExpandPrefixedToResult(value, prefix, m)
return m
}

// ExpandPrefixedToResult expand the specified values info the specified result var
func ExpandPrefixedToResult(value map[string]interface{}, prefix string, result map[string]interface{}) {
if prefix != "" {
prefix += "."
Expand Down Expand Up @@ -47,20 +50,27 @@ func ExpandPrefixedToResult(value map[string]interface{}, prefix string, result
}
}

// Flatten flatten the specified nested value
func Flatten(value interface{}) map[string]interface{} {
return FlattenPrefixed(value, "")
}

// FlattenPrefixed flatten the specified nested value but with custom prefix
func FlattenPrefixed(value interface{}, prefix string) map[string]interface{} {
m := make(map[string]interface{})
FlattenPrefixedToResult(value, prefix, m)
return m
}

// FlattenPrefixedToResult flatten the specified value using the specified prefix into the specified prefix
func FlattenPrefixedToResult(value interface{}, prefix string, m map[string]interface{}) {
base := ""
if prefix != "" {
base = prefix+"."
base = prefix + "."
}

if value == nil {
value = ""
}

original := reflect.ValueOf(value)
Expand Down