forked from mirror/gjson
example getting raw bytes, closes #12
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README.md
18
README.md
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@ -229,10 +229,24 @@ if !ok{
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If your JSON is contained in a `[]byte` slice, there's the [GetBytes](https://godoc.org/github.com/tidwall/gjson#GetBytes) function. This is preferred over `Get(string(data), path)`.
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```go
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var data []byte = ...
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res := gjson.GetBytes(data, path)
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var json []byte = ...
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result := gjson.GetBytes(json, path)
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```
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If you are using the `gjson.GetBytes(json, path)` function and you want to avoid converting `result.Raw` to a `[]byte`, then you can use this pattern:
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```go
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var json []byte = ...
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result := gjson.GetBytes(json, path)
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var raw []byte
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if result.Index > 0 {
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raw = json[result.Index:result.Index+len(result.Raw)]
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} else {
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raw = []byte(result.Raw)
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}
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```
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This is a best-effort no allocation sub slice of the original json. This method utilizes the `result.Index` field, which is the position of the raw data in the original json. It's possible that the value of `result.Index` equals zero, in which case the `result.Raw` is converted to a `[]byte`.
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## Performance
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