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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,112 @@ | ||
package assets | ||
|
||
import ( | ||
"encoding/hex" | ||
"fmt" | ||
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"github.com/ipld/go-ipld-prime/datamodel" | ||
cidlink "github.com/ipld/go-ipld-prime/linking/cid" | ||
) | ||
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type ParsedNode struct { | ||
Keys []*ParsedNode | ||
Values []*ParsedNode | ||
Value string | ||
CID string | ||
Long bool | ||
} | ||
|
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func ParseNode(node datamodel.Node) (*ParsedNode, error) { | ||
dag := &ParsedNode{} | ||
|
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switch node.Kind() { | ||
case datamodel.Kind_Map: | ||
it := node.MapIterator() | ||
|
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for !it.Done() { | ||
k, v, err := it.Next() | ||
if err != nil { | ||
return nil, err | ||
} | ||
|
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kd, err := ParseNode(k) | ||
if err != nil { | ||
return nil, err | ||
} | ||
|
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vd, err := ParseNode(v) | ||
if err != nil { | ||
return nil, err | ||
} | ||
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dag.Keys = append(dag.Keys, kd) | ||
dag.Values = append(dag.Values, vd) | ||
} | ||
case datamodel.Kind_List: | ||
it := node.ListIterator() | ||
for !it.Done() { | ||
k, v, err := it.Next() | ||
if err != nil { | ||
return nil, err | ||
} | ||
|
||
vd, err := ParseNode(v) | ||
if err != nil { | ||
return nil, err | ||
} | ||
|
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dag.Keys = append(dag.Keys, &ParsedNode{Value: fmt.Sprintf("%d", k)}) | ||
dag.Values = append(dag.Values, vd) | ||
} | ||
case datamodel.Kind_Bool: | ||
v, err := node.AsBool() | ||
if err != nil { | ||
return nil, err | ||
} | ||
dag.Value = fmt.Sprintf("%t", v) | ||
case datamodel.Kind_Int: | ||
v, err := node.AsInt() | ||
if err != nil { | ||
return nil, err | ||
} | ||
dag.Value = fmt.Sprintf("%d", v) | ||
case datamodel.Kind_Float: | ||
v, err := node.AsFloat() | ||
if err != nil { | ||
return nil, err | ||
} | ||
dag.Value = fmt.Sprintf("%f", v) | ||
case datamodel.Kind_String: | ||
v, err := node.AsString() | ||
if err != nil { | ||
return nil, err | ||
} | ||
dag.Value = v | ||
case datamodel.Kind_Bytes: | ||
v, err := node.AsBytes() | ||
if err != nil { | ||
return nil, err | ||
} | ||
dag.Long = true | ||
dag.Value = hex.Dump(v) | ||
case datamodel.Kind_Link: | ||
lnk, err := node.AsLink() | ||
if err != nil { | ||
return nil, err | ||
} | ||
dag.Value = lnk.String() | ||
|
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cl, isCid := lnk.(cidlink.Link) | ||
if isCid { | ||
dag.CID = cl.Cid.String() | ||
} | ||
case datamodel.Kind_Invalid: | ||
dag.Value = "INVALID" | ||
case datamodel.Kind_Null: | ||
dag.Value = "NULL" | ||
default: | ||
dag.Value = "UNKNOWN" | ||
} | ||
|
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return dag, nil | ||
} |
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