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Working auth and photo json endpoint

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Signed-off-by: Kris Nóva <kris@nivenly.com>
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Kris Nóva 2021-02-09 11:17:06 -08:00
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The MIT License (MIT)
Copyright (c) 2016 Josh Baker
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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<p align="center">
<img
src="logo.png"
width="240" height="78" border="0" alt="GJSON">
<br>
<a href="https://godoc.org/github.com/tidwall/gjson"><img src="https://img.shields.io/badge/api-reference-blue.svg?style=flat-square" alt="GoDoc"></a>
<a href="http://tidwall.com/gjson-play"><img src="https://img.shields.io/badge/%F0%9F%8F%90-playground-9900cc.svg?style=flat-square" alt="GJSON Playground"></a>
</p>
<p align="center">get json values quickly</a></p>
GJSON is a Go package that provides a [fast](#performance) and [simple](#get-a-value) way to get values from a json document.
It has features such as [one line retrieval](#get-a-value), [dot notation paths](#path-syntax), [iteration](#iterate-through-an-object-or-array), and [parsing json lines](#json-lines).
Also check out [SJSON](https://github.com/tidwall/sjson) for modifying json, and the [JJ](https://github.com/tidwall/jj) command line tool.
Getting Started
===============
## Installing
To start using GJSON, install Go and run `go get`:
```sh
$ go get -u github.com/tidwall/gjson
```
This will retrieve the library.
## Get a value
Get searches json for the specified path. A path is in dot syntax, such as "name.last" or "age". When the value is found it's returned immediately.
```go
package main
import "github.com/tidwall/gjson"
const json = `{"name":{"first":"Janet","last":"Prichard"},"age":47}`
func main() {
value := gjson.Get(json, "name.last")
println(value.String())
}
```
This will print:
```
Prichard
```
*There's also the [GetMany](#get-multiple-values-at-once) function to get multiple values at once, and [GetBytes](#working-with-bytes) for working with JSON byte slices.*
## Path Syntax
Below is a quick overview of the path syntax, for more complete information please
check out [GJSON Syntax](SYNTAX.md).
A path is a series of keys separated by a dot.
A key may contain special wildcard characters '\*' and '?'.
To access an array value use the index as the key.
To get the number of elements in an array or to access a child path, use the '#' character.
The dot and wildcard characters can be escaped with '\\'.
```json
{
"name": {"first": "Tom", "last": "Anderson"},
"age":37,
"children": ["Sara","Alex","Jack"],
"fav.movie": "Deer Hunter",
"friends": [
{"first": "Dale", "last": "Murphy", "age": 44, "nets": ["ig", "fb", "tw"]},
{"first": "Roger", "last": "Craig", "age": 68, "nets": ["fb", "tw"]},
{"first": "Jane", "last": "Murphy", "age": 47, "nets": ["ig", "tw"]}
]
}
```
```
"name.last" >> "Anderson"
"age" >> 37
"children" >> ["Sara","Alex","Jack"]
"children.#" >> 3
"children.1" >> "Alex"
"child*.2" >> "Jack"
"c?ildren.0" >> "Sara"
"fav\.movie" >> "Deer Hunter"
"friends.#.first" >> ["Dale","Roger","Jane"]
"friends.1.last" >> "Craig"
```
You can also query an array for the first match by using `#(...)`, or find all
matches with `#(...)#`. Queries support the `==`, `!=`, `<`, `<=`, `>`, `>=`
comparison operators and the simple pattern matching `%` (like) and `!%`
(not like) operators.
```
friends.#(last=="Murphy").first >> "Dale"
friends.#(last=="Murphy")#.first >> ["Dale","Jane"]
friends.#(age>45)#.last >> ["Craig","Murphy"]
friends.#(first%"D*").last >> "Murphy"
friends.#(first!%"D*").last >> "Craig"
friends.#(nets.#(=="fb"))#.first >> ["Dale","Roger"]
```
*Please note that prior to v1.3.0, queries used the `#[...]` brackets. This was
changed in v1.3.0 as to avoid confusion with the new
[multipath](SYNTAX.md#multipaths) syntax. For backwards compatibility,
`#[...]` will continue to work until the next major release.*
## Result Type
GJSON supports the json types `string`, `number`, `bool`, and `null`.
Arrays and Objects are returned as their raw json types.
The `Result` type holds one of these:
```
bool, for JSON booleans
float64, for JSON numbers
string, for JSON string literals
nil, for JSON null
```
To directly access the value:
```go
result.Type // can be String, Number, True, False, Null, or JSON
result.Str // holds the string
result.Num // holds the float64 number
result.Raw // holds the raw json
result.Index // index of raw value in original json, zero means index unknown
```
There are a variety of handy functions that work on a result:
```go
result.Exists() bool
result.Value() interface{}
result.Int() int64
result.Uint() uint64
result.Float() float64
result.String() string
result.Bool() bool
result.Time() time.Time
result.Array() []gjson.Result
result.Map() map[string]gjson.Result
result.Get(path string) Result
result.ForEach(iterator func(key, value Result) bool)
result.Less(token Result, caseSensitive bool) bool
```
The `result.Value()` function returns an `interface{}` which requires type assertion and is one of the following Go types:
The `result.Array()` function returns back an array of values.
If the result represents a non-existent value, then an empty array will be returned.
If the result is not a JSON array, the return value will be an array containing one result.
```go
boolean >> bool
number >> float64
string >> string
null >> nil
array >> []interface{}
object >> map[string]interface{}
```
### 64-bit integers
The `result.Int()` and `result.Uint()` calls are capable of reading all 64 bits, allowing for large JSON integers.
```go
result.Int() int64 // -9223372036854775808 to 9223372036854775807
result.Uint() int64 // 0 to 18446744073709551615
```
## Modifiers and path chaining
New in version 1.2 is support for modifier functions and path chaining.
A modifier is a path component that performs custom processing on the
json.
Multiple paths can be "chained" together using the pipe character.
This is useful for getting results from a modified query.
For example, using the built-in `@reverse` modifier on the above json document,
we'll get `children` array and reverse the order:
```
"children|@reverse" >> ["Jack","Alex","Sara"]
"children|@reverse|0" >> "Jack"
```
There are currently the following built-in modifiers:
- `@reverse`: Reverse an array or the members of an object.
- `@ugly`: Remove all whitespace from a json document.
- `@pretty`: Make the json document more human readable.
- `@this`: Returns the current element. It can be used to retrieve the root element.
- `@valid`: Ensure the json document is valid.
- `@flatten`: Flattens an array.
- `@join`: Joins multiple objects into a single object.
### Modifier arguments
A modifier may accept an optional argument. The argument can be a valid JSON
document or just characters.
For example, the `@pretty` modifier takes a json object as its argument.
```
@pretty:{"sortKeys":true}
```
Which makes the json pretty and orders all of its keys.
```json
{
"age":37,
"children": ["Sara","Alex","Jack"],
"fav.movie": "Deer Hunter",
"friends": [
{"age": 44, "first": "Dale", "last": "Murphy"},
{"age": 68, "first": "Roger", "last": "Craig"},
{"age": 47, "first": "Jane", "last": "Murphy"}
],
"name": {"first": "Tom", "last": "Anderson"}
}
```
*The full list of `@pretty` options are `sortKeys`, `indent`, `prefix`, and `width`.
Please see [Pretty Options](https://github.com/tidwall/pretty#customized-output) for more information.*
### Custom modifiers
You can also add custom modifiers.
For example, here we create a modifier that makes the entire json document upper
or lower case.
```go
gjson.AddModifier("case", func(json, arg string) string {
if arg == "upper" {
return strings.ToUpper(json)
}
if arg == "lower" {
return strings.ToLower(json)
}
return json
})
```
```
"children|@case:upper" >> ["SARA","ALEX","JACK"]
"children|@case:lower|@reverse" >> ["jack","alex","sara"]
```
## JSON Lines
There's support for [JSON Lines](http://jsonlines.org/) using the `..` prefix, which treats a multilined document as an array.
For example:
```
{"name": "Gilbert", "age": 61}
{"name": "Alexa", "age": 34}
{"name": "May", "age": 57}
{"name": "Deloise", "age": 44}
```
```
..# >> 4
..1 >> {"name": "Alexa", "age": 34}
..3 >> {"name": "Deloise", "age": 44}
..#.name >> ["Gilbert","Alexa","May","Deloise"]
..#(name="May").age >> 57
```
The `ForEachLines` function will iterate through JSON lines.
```go
gjson.ForEachLine(json, func(line gjson.Result) bool{
println(line.String())
return true
})
```
## Get nested array values
Suppose you want all the last names from the following json:
```json
{
"programmers": [
{
"firstName": "Janet",
"lastName": "McLaughlin",
}, {
"firstName": "Elliotte",
"lastName": "Hunter",
}, {
"firstName": "Jason",
"lastName": "Harold",
}
]
}
```
You would use the path "programmers.#.lastName" like such:
```go
result := gjson.Get(json, "programmers.#.lastName")
for _, name := range result.Array() {
println(name.String())
}
```
You can also query an object inside an array:
```go
name := gjson.Get(json, `programmers.#(lastName="Hunter").firstName`)
println(name.String()) // prints "Elliotte"
```
## Iterate through an object or array
The `ForEach` function allows for quickly iterating through an object or array.
The key and value are passed to the iterator function for objects.
Only the value is passed for arrays.
Returning `false` from an iterator will stop iteration.
```go
result := gjson.Get(json, "programmers")
result.ForEach(func(key, value gjson.Result) bool {
println(value.String())
return true // keep iterating
})
```
## Simple Parse and Get
There's a `Parse(json)` function that will do a simple parse, and `result.Get(path)` that will search a result.
For example, all of these will return the same result:
```go
gjson.Parse(json).Get("name").Get("last")
gjson.Get(json, "name").Get("last")
gjson.Get(json, "name.last")
```
## Check for the existence of a value
Sometimes you just want to know if a value exists.
```go
value := gjson.Get(json, "name.last")
if !value.Exists() {
println("no last name")
} else {
println(value.String())
}
// Or as one step
if gjson.Get(json, "name.last").Exists() {
println("has a last name")
}
```
## Validate JSON
The `Get*` and `Parse*` functions expects that the json is well-formed. Bad json will not panic, but it may return back unexpected results.
If you are consuming JSON from an unpredictable source then you may want to validate prior to using GJSON.
```go
if !gjson.Valid(json) {
return errors.New("invalid json")
}
value := gjson.Get(json, "name.last")
```
## Unmarshal to a map
To unmarshal to a `map[string]interface{}`:
```go
m, ok := gjson.Parse(json).Value().(map[string]interface{})
if !ok {
// not a map
}
```
## Working with Bytes
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)`.
```go
var json []byte = ...
result := gjson.GetBytes(json, path)
```
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:
```go
var json []byte = ...
result := gjson.GetBytes(json, path)
var raw []byte
if result.Index > 0 {
raw = json[result.Index:result.Index+len(result.Raw)]
} else {
raw = []byte(result.Raw)
}
```
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`.
## Get multiple values at once
The `GetMany` function can be used to get multiple values at the same time.
```go
results := gjson.GetMany(json, "name.first", "name.last", "age")
```
The return value is a `[]Result`, which will always contain exactly the same number of items as the input paths.
## Performance
Benchmarks of GJSON alongside [encoding/json](https://golang.org/pkg/encoding/json/),
[ffjson](https://github.com/pquerna/ffjson),
[EasyJSON](https://github.com/mailru/easyjson),
[jsonparser](https://github.com/buger/jsonparser),
and [json-iterator](https://github.com/json-iterator/go)
```
BenchmarkGJSONGet-8 3000000 372 ns/op 0 B/op 0 allocs/op
BenchmarkGJSONUnmarshalMap-8 900000 4154 ns/op 1920 B/op 26 allocs/op
BenchmarkJSONUnmarshalMap-8 600000 9019 ns/op 3048 B/op 69 allocs/op
BenchmarkJSONDecoder-8 300000 14120 ns/op 4224 B/op 184 allocs/op
BenchmarkFFJSONLexer-8 1500000 3111 ns/op 896 B/op 8 allocs/op
BenchmarkEasyJSONLexer-8 3000000 887 ns/op 613 B/op 6 allocs/op
BenchmarkJSONParserGet-8 3000000 499 ns/op 21 B/op 0 allocs/op
BenchmarkJSONIterator-8 3000000 812 ns/op 544 B/op 9 allocs/op
```
JSON document used:
```json
{
"widget": {
"debug": "on",
"window": {
"title": "Sample Konfabulator Widget",
"name": "main_window",
"width": 500,
"height": 500
},
"image": {
"src": "Images/Sun.png",
"hOffset": 250,
"vOffset": 250,
"alignment": "center"
},
"text": {
"data": "Click Here",
"size": 36,
"style": "bold",
"vOffset": 100,
"alignment": "center",
"onMouseUp": "sun1.opacity = (sun1.opacity / 100) * 90;"
}
}
}
```
Each operation was rotated through one of the following search paths:
```
widget.window.name
widget.image.hOffset
widget.text.onMouseUp
```
*These benchmarks were run on a MacBook Pro 15" 2.8 GHz Intel Core i7 using Go 1.8 and can be found [here](https://github.com/tidwall/gjson-benchmarks).*
## Contact
Josh Baker [@tidwall](http://twitter.com/tidwall)
## License
GJSON source code is available under the MIT [License](/LICENSE).

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# GJSON Path Syntax
A GJSON Path is a text string syntax that describes a search pattern for quickly retreiving values from a JSON payload.
This document is designed to explain the structure of a GJSON Path through examples.
- [Path structure](#path-structure)
- [Basic](#basic)
- [Wildcards](#wildcards)
- [Escape Character](#escape-character)
- [Arrays](#arrays)
- [Queries](#queries)
- [Dot vs Pipe](#dot-vs-pipe)
- [Modifiers](#modifiers)
- [Multipaths](#multipaths)
The definitive implemenation is [github.com/tidwall/gjson](https://github.com/tidwall/gjson).
Use the [GJSON Playground](https://gjson.dev) to experiment with the syntax online.
## Path structure
A GJSON Path is intended to be easily expressed as a series of components seperated by a `.` character.
Along with `.` character, there are a few more that have special meaning, including `|`, `#`, `@`, `\`, `*`, and `?`.
## Example
Given this JSON
```json
{
"name": {"first": "Tom", "last": "Anderson"},
"age":37,
"children": ["Sara","Alex","Jack"],
"fav.movie": "Deer Hunter",
"friends": [
{"first": "Dale", "last": "Murphy", "age": 44, "nets": ["ig", "fb", "tw"]},
{"first": "Roger", "last": "Craig", "age": 68, "nets": ["fb", "tw"]},
{"first": "Jane", "last": "Murphy", "age": 47, "nets": ["ig", "tw"]}
]
}
```
The following GJSON Paths evaluate to the accompanying values.
### Basic
In many cases you'll just want to retreive values by object name or array index.
```go
name.last "Anderson"
name.first "Tom"
age 37
children ["Sara","Alex","Jack"]
children.0 "Sara"
children.1 "Alex"
friends.1 {"first": "Roger", "last": "Craig", "age": 68}
friends.1.first "Roger"
```
### Wildcards
A key may contain the special wildcard characters `*` and `?`.
The `*` will match on any zero+ characters, and `?` matches on any one character.
```go
child*.2 "Jack"
c?ildren.0 "Sara"
```
### Escape character
Special purpose characters, such as `.`, `*`, and `?` can be escaped with `\`.
```go
fav\.movie "Deer Hunter"
```
You'll also need to make sure that the `\` character is correctly escaped when hardcoding a path in source code.
```go
res := gjson.Get(json, "fav\\.movie") // must escape the slash
res := gjson.Get(json, `fav\.movie`) // no need to escape the slash
```
### Arrays
The `#` character allows for digging into JSON Arrays.
To get the length of an array you'll just use the `#` all by itself.
```go
friends.# 3
friends.#.age [44,68,47]
```
### Queries
You can also query an array for the first match by using `#(...)`, or find all matches with `#(...)#`.
Queries support the `==`, `!=`, `<`, `<=`, `>`, `>=` comparison operators,
and the simple pattern matching `%` (like) and `!%` (not like) operators.
```go
friends.#(last=="Murphy").first "Dale"
friends.#(last=="Murphy")#.first ["Dale","Jane"]
friends.#(age>45)#.last ["Craig","Murphy"]
friends.#(first%"D*").last "Murphy"
friends.#(first!%"D*").last "Craig"
```
To query for a non-object value in an array, you can forgo the string to the right of the operator.
```go
children.#(!%"*a*") "Alex"
children.#(%"*a*")# ["Sara","Jack"]
```
Nested queries are allowed.
```go
friends.#(nets.#(=="fb"))#.first >> ["Dale","Roger"]
```
*Please note that prior to v1.3.0, queries used the `#[...]` brackets. This was
changed in v1.3.0 as to avoid confusion with the new [multipath](#multipaths)
syntax. For backwards compatibility, `#[...]` will continue to work until the
next major release.*
### Dot vs Pipe
The `.` is standard separator, but it's also possible to use a `|`.
In most cases they both end up returning the same results.
The cases where`|` differs from `.` is when it's used after the `#` for [Arrays](#arrays) and [Queries](#queries).
Here are some examples
```go
friends.0.first "Dale"
friends|0.first "Dale"
friends.0|first "Dale"
friends|0|first "Dale"
friends|# 3
friends.# 3
friends.#(last="Murphy")# [{"first": "Dale", "last": "Murphy", "age": 44},{"first": "Jane", "last": "Murphy", "age": 47}]
friends.#(last="Murphy")#.first ["Dale","Jane"]
friends.#(last="Murphy")#|first <non-existent>
friends.#(last="Murphy")#.0 []
friends.#(last="Murphy")#|0 {"first": "Dale", "last": "Murphy", "age": 44}
friends.#(last="Murphy")#.# []
friends.#(last="Murphy")#|# 2
```
Let's break down a few of these.
The path `friends.#(last="Murphy")#` all by itself results in
```json
[{"first": "Dale", "last": "Murphy", "age": 44},{"first": "Jane", "last": "Murphy", "age": 47}]
```
The `.first` suffix will process the `first` path on each array element *before* returning the results. Which becomes
```json
["Dale","Jane"]
```
But the `|first` suffix actually processes the `first` path *after* the previous result.
Since the previous result is an array, not an object, it's not possible to process
because `first` does not exist.
Yet, `|0` suffix returns
```json
{"first": "Dale", "last": "Murphy", "age": 44}
```
Because `0` is the first index of the previous result.
### Modifiers
A modifier is a path component that performs custom processing on the JSON.
For example, using the built-in `@reverse` modifier on the above JSON payload will reverse the `children` array:
```go
children.@reverse ["Jack","Alex","Sara"]
children.@reverse.0 "Jack"
```
There are currently the following built-in modifiers:
- `@reverse`: Reverse an array or the members of an object.
- `@ugly`: Remove all whitespace from JSON.
- `@pretty`: Make the JSON more human readable.
- `@this`: Returns the current element. It can be used to retrieve the root element.
- `@valid`: Ensure the json document is valid.
- `@flatten`: Flattens an array.
- `@join`: Joins multiple objects into a single object.
#### Modifier arguments
A modifier may accept an optional argument. The argument can be a valid JSON payload or just characters.
For example, the `@pretty` modifier takes a json object as its argument.
```
@pretty:{"sortKeys":true}
```
Which makes the json pretty and orders all of its keys.
```json
{
"age":37,
"children": ["Sara","Alex","Jack"],
"fav.movie": "Deer Hunter",
"friends": [
{"age": 44, "first": "Dale", "last": "Murphy"},
{"age": 68, "first": "Roger", "last": "Craig"},
{"age": 47, "first": "Jane", "last": "Murphy"}
],
"name": {"first": "Tom", "last": "Anderson"}
}
```
*The full list of `@pretty` options are `sortKeys`, `indent`, `prefix`, and `width`.
Please see [Pretty Options](https://github.com/tidwall/pretty#customized-output) for more information.*
#### Custom modifiers
You can also add custom modifiers.
For example, here we create a modifier which makes the entire JSON payload upper or lower case.
```go
gjson.AddModifier("case", func(json, arg string) string {
if arg == "upper" {
return strings.ToUpper(json)
}
if arg == "lower" {
return strings.ToLower(json)
}
return json
})
"children.@case:upper" ["SARA","ALEX","JACK"]
"children.@case:lower.@reverse" ["jack","alex","sara"]
```
### Multipaths
Starting with v1.3.0, GJSON added the ability to join multiple paths together
to form new documents. Wrapping comma-separated paths between `{...}` or
`[...]` will result in a new array or object, respectively.
For example, using the given multipath
```
{name.first,age,"the_murphys":friends.#(last="Murphy")#.first}
```
Here we selected the first name, age, and the first name for friends with the
last name "Murphy".
You'll notice that an optional key can be provided, in this case
"the_murphys", to force assign a key to a value. Otherwise, the name of the
actual field will be used, in this case "first". If a name cannot be
determined, then "_" is used.
This results in
```
{"first":"Tom","age":37,"the_murphys":["Dale","Jane"]}
```

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module github.com/tidwall/gjson
go 1.12
require (
github.com/tidwall/match v1.0.3
github.com/tidwall/pretty v1.0.2
)

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github.com/tidwall/match v1.0.1 h1:PnKP62LPNxHKTwvHHZZzdOAOCtsJTjo6dZLCwpKm5xc=
github.com/tidwall/match v1.0.1/go.mod h1:LujAq0jyVjBy028G1WhWfIzbpQfMO8bBZ6Tyb0+pL9E=
github.com/tidwall/match v1.0.3 h1:FQUVvBImDutD8wJLN6c5eMzWtjgONK9MwIBCOrUJKeE=
github.com/tidwall/match v1.0.3/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JTxsfmM=
github.com/tidwall/pretty v1.0.2 h1:Z7S3cePv9Jwm1KwS0513MRaoUe3S01WPbLNV40pwWZU=
github.com/tidwall/pretty v1.0.2/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhVysOjyk=

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The MIT License (MIT)
Copyright (c) 2016 Josh Baker
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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# Match
[![GoDoc](https://godoc.org/github.com/tidwall/match?status.svg)](https://godoc.org/github.com/tidwall/match)
Match is a very simple pattern matcher where '*' matches on any
number characters and '?' matches on any one character.
## Installing
```
go get -u github.com/tidwall/match
```
## Example
```go
match.Match("hello", "*llo")
match.Match("jello", "?ello")
match.Match("hello", "h*o")
```
## Contact
Josh Baker [@tidwall](http://twitter.com/tidwall)
## License
Redcon source code is available under the MIT [License](/LICENSE).

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module github.com/tidwall/match
go 1.15

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// Package match provides a simple pattern matcher with unicode support.
package match
import "unicode/utf8"
// Match returns true if str matches pattern. This is a very
// simple wildcard match where '*' matches on any number characters
// and '?' matches on any one character.
//
// pattern:
// { term }
// term:
// '*' matches any sequence of non-Separator characters
// '?' matches any single non-Separator character
// c matches character c (c != '*', '?', '\\')
// '\\' c matches character c
//
func Match(str, pattern string) bool {
return deepMatch(str, pattern)
}
func deepMatch(str, pattern string) bool {
if pattern == "*" {
return true
}
for len(pattern) > 1 && pattern[0] == '*' && pattern[1] == '*' {
pattern = pattern[1:]
}
for len(pattern) > 0 {
if pattern[0] > 0x7f {
return deepMatchRune(str, pattern)
}
switch pattern[0] {
default:
if len(str) == 0 {
return false
}
if str[0] > 0x7f {
return deepMatchRune(str, pattern)
}
if str[0] != pattern[0] {
return false
}
case '?':
if len(str) == 0 {
return false
}
case '*':
return deepMatch(str, pattern[1:]) ||
(len(str) > 0 && deepMatch(str[1:], pattern))
}
str = str[1:]
pattern = pattern[1:]
}
return len(str) == 0 && len(pattern) == 0
}
func deepMatchRune(str, pattern string) bool {
if pattern == "*" {
return true
}
for len(pattern) > 1 && pattern[0] == '*' && pattern[1] == '*' {
pattern = pattern[1:]
}
var sr, pr rune
var srsz, prsz int
// read the first rune ahead of time
if len(str) > 0 {
if str[0] > 0x7f {
sr, srsz = utf8.DecodeRuneInString(str)
} else {
sr, srsz = rune(str[0]), 1
}
} else {
sr, srsz = utf8.RuneError, 0
}
if len(pattern) > 0 {
if pattern[0] > 0x7f {
pr, prsz = utf8.DecodeRuneInString(pattern)
} else {
pr, prsz = rune(pattern[0]), 1
}
} else {
pr, prsz = utf8.RuneError, 0
}
// done reading
for pr != utf8.RuneError {
switch pr {
default:
if srsz == utf8.RuneError {
return false
}
if sr != pr {
return false
}
case '?':
if srsz == utf8.RuneError {
return false
}
case '*':
return deepMatchRune(str, pattern[prsz:]) ||
(srsz > 0 && deepMatchRune(str[srsz:], pattern))
}
str = str[srsz:]
pattern = pattern[prsz:]
// read the next runes
if len(str) > 0 {
if str[0] > 0x7f {
sr, srsz = utf8.DecodeRuneInString(str)
} else {
sr, srsz = rune(str[0]), 1
}
} else {
sr, srsz = utf8.RuneError, 0
}
if len(pattern) > 0 {
if pattern[0] > 0x7f {
pr, prsz = utf8.DecodeRuneInString(pattern)
} else {
pr, prsz = rune(pattern[0]), 1
}
} else {
pr, prsz = utf8.RuneError, 0
}
// done reading
}
return srsz == 0 && prsz == 0
}
var maxRuneBytes = func() []byte {
b := make([]byte, 4)
if utf8.EncodeRune(b, '\U0010FFFF') != 4 {
panic("invalid rune encoding")
}
return b
}()
// Allowable parses the pattern and determines the minimum and maximum allowable
// values that the pattern can represent.
// When the max cannot be determined, 'true' will be returned
// for infinite.
func Allowable(pattern string) (min, max string) {
if pattern == "" || pattern[0] == '*' {
return "", ""
}
minb := make([]byte, 0, len(pattern))
maxb := make([]byte, 0, len(pattern))
var wild bool
for i := 0; i < len(pattern); i++ {
if pattern[i] == '*' {
wild = true
break
}
if pattern[i] == '?' {
minb = append(minb, 0)
maxb = append(maxb, maxRuneBytes...)
} else {
minb = append(minb, pattern[i])
maxb = append(maxb, pattern[i])
}
}
if wild {
r, n := utf8.DecodeLastRune(maxb)
if r != utf8.RuneError {
if r < utf8.MaxRune {
r++
if r > 0x7f {
b := make([]byte, 4)
nn := utf8.EncodeRune(b, r)
maxb = append(maxb[:len(maxb)-n], b[:nn]...)
} else {
maxb = append(maxb[:len(maxb)-n], byte(r))
}
}
}
}
return string(minb), string(maxb)
}
// IsPattern returns true if the string is a pattern.
func IsPattern(str string) bool {
for i := 0; i < len(str); i++ {
if str[i] == '*' || str[i] == '?' {
return true
}
}
return false
}

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language: go

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The MIT License (MIT)
Copyright (c) 2017 Josh Baker
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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# Pretty
[![Build Status](https://img.shields.io/travis/tidwall/pretty.svg?style=flat-square)](https://travis-ci.org/tidwall/prettty)
[![Coverage Status](https://img.shields.io/badge/coverage-100%25-brightgreen.svg?style=flat-square)](http://gocover.io/github.com/tidwall/pretty)
[![GoDoc](https://img.shields.io/badge/api-reference-blue.svg?style=flat-square)](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-8 1000000 1283 ns/op 720 B/op 2 allocs/op
BenchmarkUgly-8 3000000 426 ns/op 240 B/op 1 allocs/op
BenchmarkUglyInPlace-8 5000000 340 ns/op 0 B/op 0 allocs/op
BenchmarkJSONIndent-8 300000 4628 ns/op 1069 B/op 4 allocs/op
BenchmarkJSONCompact-8 1000000 2469 ns/op 758 B/op 4 allocs/op
```
*These benchmarks were run on a MacBook Pro 15" 2.8 GHz Intel Core i7 using Go 1.7.*
## Contact
Josh Baker [@tidwall](http://twitter.com/tidwall)
## License
Pretty source code is available under the MIT [License](/LICENSE).

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package pretty
import (
"sort"
)
// Options is Pretty options
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
}
// DefaultOptions is the default options for pretty formats.
var DefaultOptions = &Options{Width: 80, Prefix: "", Indent: " ", SortKeys: false}
// Pretty converts the input json into a more human readable format where each
// element is on it's own line with clear indentation.
func Pretty(json []byte) []byte { return PrettyOptions(json, nil) }
// PrettyOptions is like Pretty but with customized options.
func PrettyOptions(json []byte, opts *Options) []byte {
if opts == nil {
opts = DefaultOptions
}
buf := make([]byte, 0, len(json))
if len(opts.Prefix) != 0 {
buf = append(buf, opts.Prefix...)
}
buf, _, _, _ = appendPrettyAny(buf, json, 0, true,
opts.Width, opts.Prefix, opts.Indent, opts.SortKeys,
0, 0, -1)
if len(buf) > 0 {
buf = append(buf, '\n')
}
return buf
}
// Ugly removes insignificant space characters from the input json byte slice
// and returns the compacted result.
func Ugly(json []byte) []byte {
buf := make([]byte, 0, len(json))
return ugly(buf, json)
}
// UglyInPlace removes insignificant space characters from the input json
// byte slice and returns the compacted result. This method reuses the
// input json buffer to avoid allocations. Do not use the original bytes
// slice upon return.
func UglyInPlace(json []byte) []byte { return ugly(json, json) }
func ugly(dst, src []byte) []byte {
dst = dst[:0]
for i := 0; i < len(src); i++ {
if src[i] > ' ' {
dst = append(dst, src[i])
if src[i] == '"' {
for i = i + 1; i < len(src); i++ {
dst = append(dst, src[i])
if src[i] == '"' {
j := i - 1
for ; ; j-- {
if src[j] != '\\' {
break
}
}
if (j-i)%2 != 0 {
break
}
}
}
}
}
}
return dst
}
func appendPrettyAny(buf, json []byte, i int, pretty bool, width int, prefix, indent string, sortkeys bool, tabs, nl, max int) ([]byte, int, int, bool) {
for ; i < len(json); i++ {
if json[i] <= ' ' {
continue
}
if json[i] == '"' {
return appendPrettyString(buf, json, i, nl)
}
if (json[i] >= '0' && json[i] <= '9') || json[i] == '-' {
return appendPrettyNumber(buf, json, i, nl)
}
if json[i] == '{' {
return appendPrettyObject(buf, json, i, '{', '}', pretty, width, prefix, indent, sortkeys, tabs, nl, max)
}
if json[i] == '[' {
return appendPrettyObject(buf, json, i, '[', ']', pretty, width, prefix, indent, sortkeys, tabs, nl, max)
}
switch json[i] {
case 't':
return append(buf, 't', 'r', 'u', 'e'), i + 4, nl, true
case 'f':
return append(buf, 'f', 'a', 'l', 's', 'e'), i + 5, nl, true
case 'n':
return append(buf, 'n', 'u', 'l', 'l'), i + 4, nl, true
}
}
return buf, i, nl, true
}
type pair struct {
kstart, kend int
vstart, vend int
}
type byKey struct {
sorted bool
json []byte
pairs []pair
}
func (arr *byKey) Len() int {
return len(arr.pairs)
}
func (arr *byKey) Less(i, j int) bool {
key1 := arr.json[arr.pairs[i].kstart+1 : arr.pairs[i].kend-1]
key2 := arr.json[arr.pairs[j].kstart+1 : arr.pairs[j].kend-1]
return string(key1) < string(key2)
}
func (arr *byKey) Swap(i, j int) {
arr.pairs[i], arr.pairs[j] = arr.pairs[j], arr.pairs[i]
arr.sorted = true
}
func appendPrettyObject(buf, json []byte, i int, open, close byte, pretty bool, width int, prefix, indent string, sortkeys bool, tabs, nl, max int) ([]byte, int, int, bool) {
var ok bool
if width > 0 {
if pretty && open == '[' && max == -1 {
// here we try to create a single line array
max := width - (len(buf) - nl)
if max > 3 {
s1, s2 := len(buf), i
buf, i, _, ok = appendPrettyObject(buf, json, i, '[', ']', false, width, prefix, "", sortkeys, 0, 0, max)
if ok && len(buf)-s1 <= max {
return buf, i, nl, true
}
buf = buf[:s1]
i = s2
}
} else if max != -1 && open == '{' {
return buf, i, nl, false
}
}
buf = append(buf, open)
i++
var pairs []pair
if open == '{' && sortkeys {
pairs = make([]pair, 0, 8)
}
var n int
for ; i < len(json); i++ {
if json[i] <= ' ' {
continue
}
if json[i] == close {
if pretty {
if open == '{' && sortkeys {
buf = sortPairs(json, buf, pairs)
}
if n > 0 {
nl = len(buf)
buf = append(buf, '\n')
}
if buf[len(buf)-1] != open {
buf = appendTabs(buf, prefix, indent, tabs)
}
}
buf = append(buf, close)
return buf, i + 1, nl, open != '{'
}
if open == '[' || json[i] == '"' {
if n > 0 {
buf = append(buf, ',')
if width != -1 && open == '[' {
buf = append(buf, ' ')
}
}
var p pair
if pretty {
nl = len(buf)
buf = append(buf, '\n')
if open == '{' && sortkeys {
p.kstart = i
p.vstart = len(buf)
}
buf = appendTabs(buf, prefix, indent, tabs+1)
}
if open == '{' {
buf, i, nl, _ = appendPrettyString(buf, json, i, nl)
if sortkeys {
p.kend = i
}
buf = append(buf, ':')
if pretty {
buf = append(buf, ' ')
}
}
buf, i, nl, ok = appendPrettyAny(buf, json, i, pretty, width, prefix, indent, sortkeys, tabs+1, nl, max)
if max != -1 && !ok {
return buf, i, nl, false
}
if pretty && open == '{' && sortkeys {
p.vend = len(buf)
if p.kstart > p.kend || p.vstart > p.vend {
// bad data. disable sorting
sortkeys = false
} else {
pairs = append(pairs, p)
}
}
i--
n++
}
}
return buf, i, nl, open != '{'
}
func sortPairs(json, buf []byte, pairs []pair) []byte {
if len(pairs) == 0 {
return buf
}
vstart := pairs[0].vstart
vend := pairs[len(pairs)-1].vend
arr := byKey{false, json, pairs}
sort.Sort(&arr)
if !arr.sorted {
return buf
}
nbuf := make([]byte, 0, vend-vstart)
for i, p := range pairs {
nbuf = append(nbuf, buf[p.vstart:p.vend]...)
if i < len(pairs)-1 {
nbuf = append(nbuf, ',')
nbuf = append(nbuf, '\n')
}
}
return append(buf[:vstart], nbuf...)
}
func appendPrettyString(buf, json []byte, i, nl int) ([]byte, int, int, bool) {
s := i
i++
for ; i < len(json); i++ {
if json[i] == '"' {
var sc int
for j := i - 1; j > s; j-- {
if json[j] == '\\' {
sc++
} else {
break
}
}
if sc%2 == 1 {
continue
}
i++
break
}
}
return append(buf, json[s:i]...), i, nl, true
}
func appendPrettyNumber(buf, json []byte, i, nl int) ([]byte, int, int, bool) {
s := i
i++
for ; i < len(json); i++ {
if json[i] <= ' ' || json[i] == ',' || json[i] == ':' || json[i] == ']' || json[i] == '}' {
break
}
}
return append(buf, json[s:i]...), i, nl, true
}
func appendTabs(buf []byte, prefix, indent string, tabs int) []byte {
if len(prefix) != 0 {
buf = append(buf, prefix...)
}
if len(indent) == 2 && indent[0] == ' ' && indent[1] == ' ' {
for i := 0; i < tabs; i++ {
buf = append(buf, ' ', ' ')
}
} else {
for i := 0; i < tabs; i++ {
buf = append(buf, indent...)
}
}
return buf
}
// Style is the color style
type Style struct {
Key, String, Number [2]string
True, False, Null [2]string
Append func(dst []byte, c byte) []byte
}
func hexp(p byte) byte {
switch {
case p < 10:
return p + '0'
default:
return (p - 10) + 'a'
}
}
// TerminalStyle is for terminals
var TerminalStyle *Style
func init() {
TerminalStyle = &Style{
Key: [2]string{"\x1B[94m", "\x1B[0m"},
String: [2]string{"\x1B[92m", "\x1B[0m"},
Number: [2]string{"\x1B[93m", "\x1B[0m"},
True: [2]string{"\x1B[96m", "\x1B[0m"},
False: [2]string{"\x1B[96m", "\x1B[0m"},
Null: [2]string{"\x1B[91m", "\x1B[0m"},
Append: func(dst []byte, c byte) []byte {
if c < ' ' && (c != '\r' && c != '\n' && c != '\t' && c != '\v') {
dst = append(dst, "\\u00"...)
dst = append(dst, hexp((c>>4)&0xF))
return append(dst, hexp((c)&0xF))
}
return append(dst, c)
},
}
}
// Color will colorize the json. The style parma is used for customizing
// the colors. Passing nil to the style param will use the default
// TerminalStyle.
func Color(src []byte, style *Style) []byte {
if style == nil {
style = TerminalStyle
}
apnd := style.Append
if apnd == nil {
apnd = func(dst []byte, c byte) []byte {
return append(dst, c)
}
}
type stackt struct {
kind byte
key bool
}
var dst []byte
var stack []stackt
for i := 0; i < len(src); i++ {
if src[i] == '"' {
key := len(stack) > 0 && stack[len(stack)-1].key
if key {
dst = append(dst, style.Key[0]...)
} else {
dst = append(dst, style.String[0]...)
}
dst = apnd(dst, '"')
for i = i + 1; i < len(src); i++ {
dst = apnd(dst, src[i])
if src[i] == '"' {
j := i - 1
for ; ; j-- {
if src[j] != '\\' {
break
}
}
if (j-i)%2 != 0 {
break
}
}
}
if key {
dst = append(dst, style.Key[1]...)
} else {
dst = append(dst, style.String[1]...)
}
} else if src[i] == '{' || src[i] == '[' {
stack = append(stack, stackt{src[i], src[i] == '{'})
dst = apnd(dst, src[i])
} else if (src[i] == '}' || src[i] == ']') && len(stack) > 0 {
stack = stack[:len(stack)-1]
dst = apnd(dst, src[i])
} else if (src[i] == ':' || src[i] == ',') && len(stack) > 0 && stack[len(stack)-1].kind == '{' {
stack[len(stack)-1].key = !stack[len(stack)-1].key
dst = apnd(dst, src[i])
} else {
var kind byte
if (src[i] >= '0' && src[i] <= '9') || src[i] == '-' {
kind = '0'
dst = append(dst, style.Number[0]...)
} else if src[i] == 't' {
kind = 't'
dst = append(dst, style.True[0]...)
} else if src[i] == 'f' {
kind = 'f'
dst = append(dst, style.False[0]...)
} else if src[i] == 'n' {
kind = 'n'
dst = append(dst, style.Null[0]...)
} else {
dst = apnd(dst, src[i])
}
if kind != 0 {
for ; i < len(src); i++ {
if src[i] <= ' ' || src[i] == ',' || src[i] == ':' || src[i] == ']' || src[i] == '}' {
i--
break
}
dst = apnd(dst, src[i])
}
if kind == '0' {
dst = append(dst, style.Number[1]...)
} else if kind == 't' {
dst = append(dst, style.True[1]...)
} else if kind == 'f' {
dst = append(dst, style.False[1]...)
} else if kind == 'n' {
dst = append(dst, style.Null[1]...)
}
}
}
}
return dst
}