mirror of
https://github.com/ergochat/ergo.git
synced 2025-10-30 21:37:23 +01:00
123 lines
2.9 KiB
Markdown
123 lines
2.9 KiB
Markdown
# Pretty
|
|
|
|
[](https://pkg.go.dev/github.com/tidwall/pretty)
|
|
|
|
Pretty is a Go package that provides [fast](#performance) methods for formatting JSON for human readability, or to compact JSON for smaller payloads.
|
|
|
|
Getting Started
|
|
===============
|
|
|
|
## Installing
|
|
|
|
To start using Pretty, install Go and run `go get`:
|
|
|
|
```sh
|
|
$ go get -u github.com/tidwall/pretty
|
|
```
|
|
|
|
This will retrieve the library.
|
|
|
|
## Pretty
|
|
|
|
Using this example:
|
|
|
|
```json
|
|
{"name": {"first":"Tom","last":"Anderson"}, "age":37,
|
|
"children": ["Sara","Alex","Jack"],
|
|
"fav.movie": "Deer Hunter", "friends": [
|
|
{"first": "Janet", "last": "Murphy", "age": 44}
|
|
]}
|
|
```
|
|
|
|
The following code:
|
|
```go
|
|
result = pretty.Pretty(example)
|
|
```
|
|
|
|
Will format the json to:
|
|
|
|
```json
|
|
{
|
|
"name": {
|
|
"first": "Tom",
|
|
"last": "Anderson"
|
|
},
|
|
"age": 37,
|
|
"children": ["Sara", "Alex", "Jack"],
|
|
"fav.movie": "Deer Hunter",
|
|
"friends": [
|
|
{
|
|
"first": "Janet",
|
|
"last": "Murphy",
|
|
"age": 44
|
|
}
|
|
]
|
|
}
|
|
```
|
|
|
|
## Color
|
|
|
|
Color will colorize the json for outputing to the screen.
|
|
|
|
```json
|
|
result = pretty.Color(json, nil)
|
|
```
|
|
|
|
Will add color to the result for printing to the terminal.
|
|
The second param is used for a customizing the style, and passing nil will use the default `pretty.TerminalStyle`.
|
|
|
|
## Ugly
|
|
|
|
The following code:
|
|
```go
|
|
result = pretty.Ugly(example)
|
|
```
|
|
|
|
Will format the json to:
|
|
|
|
```json
|
|
{"name":{"first":"Tom","last":"Anderson"},"age":37,"children":["Sara","Alex","Jack"],"fav.movie":"Deer Hunter","friends":[{"first":"Janet","last":"Murphy","age":44}]}```
|
|
```
|
|
|
|
## Customized output
|
|
|
|
There's a `PrettyOptions(json, opts)` function which allows for customizing the output with the following options:
|
|
|
|
```go
|
|
type Options struct {
|
|
// Width is an max column width for single line arrays
|
|
// Default is 80
|
|
Width int
|
|
// Prefix is a prefix for all lines
|
|
// Default is an empty string
|
|
Prefix string
|
|
// Indent is the nested indentation
|
|
// Default is two spaces
|
|
Indent string
|
|
// SortKeys will sort the keys alphabetically
|
|
// Default is false
|
|
SortKeys bool
|
|
}
|
|
```
|
|
## Performance
|
|
|
|
Benchmarks of Pretty alongside the builtin `encoding/json` Indent/Compact methods.
|
|
```
|
|
BenchmarkPretty-16 1000000 1034 ns/op 720 B/op 2 allocs/op
|
|
BenchmarkPrettySortKeys-16 586797 1983 ns/op 2848 B/op 14 allocs/op
|
|
BenchmarkUgly-16 4652365 254 ns/op 240 B/op 1 allocs/op
|
|
BenchmarkUglyInPlace-16 6481233 183 ns/op 0 B/op 0 allocs/op
|
|
BenchmarkJSONIndent-16 450654 2687 ns/op 1221 B/op 0 allocs/op
|
|
BenchmarkJSONCompact-16 685111 1699 ns/op 442 B/op 0 allocs/op
|
|
```
|
|
|
|
*These benchmarks were run on a MacBook Pro 2.4 GHz 8-Core Intel Core i9.*
|
|
|
|
## Contact
|
|
Josh Baker [@tidwall](http://twitter.com/tidwall)
|
|
|
|
## License
|
|
|
|
Pretty source code is available under the MIT [License](/LICENSE).
|
|
|