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feat(gateway): preview dag-cbor/-json with links
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| package assets | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "html/template" | ||
|
|
||
| "github.com/ipld/go-ipld-prime/datamodel" | ||
| cidlink "github.com/ipld/go-ipld-prime/linking/cid" | ||
| ) | ||
|
|
||
| type ParsedNode struct { | ||
| Keys []*ParsedNode | ||
| Values []*ParsedNode | ||
| Value string | ||
| CID string | ||
| } | ||
|
|
||
| func ParseNode(node datamodel.Node) (*ParsedNode, error) { | ||
| dag := &ParsedNode{} | ||
|
|
||
| switch node.Kind() { | ||
| case datamodel.Kind_Map: | ||
| it := node.MapIterator() | ||
|
|
||
| for !it.Done() { | ||
| k, v, err := it.Next() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| kd, err := ParseNode(k) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| vd, err := ParseNode(v) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| 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 | ||
| } | ||
|
|
||
| dag.Keys = append(dag.Keys, &ParsedNode{Value: fmt.Sprint(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 = template.HTMLEscapeString(v) | ||
| case datamodel.Kind_Bytes: | ||
| v, err := node.AsBytes() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| dag.Value = fmt.Sprint(v) | ||
| case datamodel.Kind_Link: | ||
| lnk, err := node.AsLink() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| dag.Value = lnk.String() | ||
|
|
||
| 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" | ||
| } | ||
|
|
||
| return dag, nil | ||
| } |
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