336 lines
8.8 KiB
Go
336 lines
8.8 KiB
Go
package gofakeit
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"math/rand"
|
|
"reflect"
|
|
"strconv"
|
|
)
|
|
|
|
// JSONOptions defines values needed for json generation
|
|
type JSONOptions struct {
|
|
Type string `json:"type" xml:"type" fake:"{randomstring:[array,object]}"` // array or object
|
|
RowCount int `json:"row_count" xml:"row_count" fake:"{number:1,10}"`
|
|
Indent bool `json:"indent" xml:"indent"`
|
|
Fields []Field `json:"fields" xml:"fields" fake:"{fields}"`
|
|
}
|
|
|
|
type jsonKeyVal struct {
|
|
Key string
|
|
Value any
|
|
}
|
|
|
|
type jsonOrderedKeyVal []*jsonKeyVal
|
|
|
|
func (okv jsonOrderedKeyVal) MarshalJSON() ([]byte, error) {
|
|
var buf bytes.Buffer
|
|
|
|
buf.WriteString("{")
|
|
for i, kv := range okv {
|
|
// Add comma to all except last one
|
|
if i != 0 {
|
|
buf.WriteString(",")
|
|
}
|
|
|
|
// Marshal key and write
|
|
key, err := json.Marshal(kv.Key)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
buf.Write(key)
|
|
|
|
// Write colon separator
|
|
buf.WriteString(":")
|
|
|
|
// Marshal value and write
|
|
val, err := json.Marshal(kv.Value)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
buf.Write(val)
|
|
}
|
|
buf.WriteString("}")
|
|
|
|
return buf.Bytes(), nil
|
|
}
|
|
|
|
// JSON generates an object or an array of objects in json format.
|
|
// A nil JSONOptions returns a randomly structured JSON.
|
|
func JSON(jo *JSONOptions) ([]byte, error) { return jsonFunc(globalFaker, jo) }
|
|
|
|
// JSON generates an object or an array of objects in json format.
|
|
// A nil JSONOptions returns a randomly structured JSON.
|
|
func (f *Faker) JSON(jo *JSONOptions) ([]byte, error) { return jsonFunc(f, jo) }
|
|
|
|
// JSON generates an object or an array of objects in json format
|
|
func jsonFunc(f *Faker, jo *JSONOptions) ([]byte, error) {
|
|
if jo == nil {
|
|
// We didn't get a JSONOptions, so create a new random one
|
|
err := f.Struct(&jo)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
// Check to make sure they passed in a type
|
|
if jo.Type != "array" && jo.Type != "object" {
|
|
return nil, errors.New("invalid type, must be array or object")
|
|
}
|
|
|
|
if jo.Fields == nil || len(jo.Fields) <= 0 {
|
|
return nil, errors.New("must pass fields in order to build json object(s)")
|
|
}
|
|
|
|
if jo.Type == "object" {
|
|
v := make(jsonOrderedKeyVal, len(jo.Fields))
|
|
|
|
// Loop through fields and add to them to map[string]any
|
|
for i, field := range jo.Fields {
|
|
if field.Function == "autoincrement" {
|
|
// Object only has one
|
|
v[i] = &jsonKeyVal{Key: field.Name, Value: 1}
|
|
continue
|
|
}
|
|
|
|
// Get function info
|
|
funcInfo := GetFuncLookup(field.Function)
|
|
if funcInfo == nil {
|
|
return nil, errors.New("invalid function, " + field.Function + " does not exist")
|
|
}
|
|
|
|
// Call function value
|
|
value, err := funcInfo.Generate(f.Rand, &field.Params, funcInfo)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if _, ok := value.([]byte); ok {
|
|
// If it's a slice, unmarshal it into an interface
|
|
var val any
|
|
err := json.Unmarshal(value.([]byte), &val)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
value = val
|
|
}
|
|
|
|
v[i] = &jsonKeyVal{Key: field.Name, Value: value}
|
|
|
|
}
|
|
|
|
// Marshal into bytes
|
|
if jo.Indent {
|
|
j, _ := json.MarshalIndent(v, "", " ")
|
|
return j, nil
|
|
}
|
|
|
|
j, _ := json.Marshal(v)
|
|
return j, nil
|
|
}
|
|
|
|
if jo.Type == "array" {
|
|
// Make sure you set a row count
|
|
if jo.RowCount <= 0 {
|
|
return nil, errors.New("must have row count")
|
|
}
|
|
|
|
v := make([]jsonOrderedKeyVal, jo.RowCount)
|
|
|
|
for i := 0; i < int(jo.RowCount); i++ {
|
|
vr := make(jsonOrderedKeyVal, len(jo.Fields))
|
|
|
|
// Loop through fields and add to them to map[string]any
|
|
for ii, field := range jo.Fields {
|
|
if field.Function == "autoincrement" {
|
|
vr[ii] = &jsonKeyVal{Key: field.Name, Value: i + 1} // +1 because index starts with 0
|
|
continue
|
|
}
|
|
|
|
// Get function info
|
|
funcInfo := GetFuncLookup(field.Function)
|
|
if funcInfo == nil {
|
|
return nil, errors.New("invalid function, " + field.Function + " does not exist")
|
|
}
|
|
|
|
// Call function value
|
|
value, err := funcInfo.Generate(f.Rand, &field.Params, funcInfo)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if _, ok := value.([]byte); ok {
|
|
// If it's a slice, unmarshal it into an interface
|
|
var val any
|
|
err := json.Unmarshal(value.([]byte), &val)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
value = val
|
|
}
|
|
|
|
vr[ii] = &jsonKeyVal{Key: field.Name, Value: value}
|
|
}
|
|
|
|
v[i] = vr
|
|
}
|
|
|
|
// Marshal into bytes
|
|
if jo.Indent {
|
|
j, _ := json.MarshalIndent(v, "", " ")
|
|
return j, nil
|
|
}
|
|
|
|
j, _ := json.Marshal(v)
|
|
return j, nil
|
|
}
|
|
|
|
return nil, errors.New("invalid type, must be array or object")
|
|
}
|
|
|
|
func addFileJSONLookup() {
|
|
AddFuncLookup("json", Info{
|
|
Display: "JSON",
|
|
Category: "file",
|
|
Description: "Format for structured data interchange used in programming, returns an object or an array of objects",
|
|
Example: `[
|
|
{ "first_name": "Markus", "last_name": "Moen", "password": "Dc0VYXjkWABx" },
|
|
{ "first_name": "Osborne", "last_name": "Hilll", "password": "XPJ9OVNbs5lm" },
|
|
{ "first_name": "Mertie", "last_name": "Halvorson", "password": "eyl3bhwfV8wA" }
|
|
]`,
|
|
Output: "[]byte",
|
|
ContentType: "application/json",
|
|
Params: []Param{
|
|
{Field: "type", Display: "Type", Type: "string", Default: "object", Options: []string{"object", "array"}, Description: "Type of JSON, object or array"},
|
|
{Field: "rowcount", Display: "Row Count", Type: "int", Default: "100", Description: "Number of rows in JSON array"},
|
|
{Field: "indent", Display: "Indent", Type: "bool", Default: "false", Description: "Whether or not to add indents and newlines"},
|
|
{Field: "fields", Display: "Fields", Type: "[]Field", Description: "Fields containing key name and function to run in json format"},
|
|
},
|
|
Generate: func(r *rand.Rand, m *MapParams, info *Info) (any, error) {
|
|
jo := JSONOptions{}
|
|
|
|
typ, err := info.GetString(m, "type")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
jo.Type = typ
|
|
|
|
rowcount, err := info.GetInt(m, "rowcount")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
jo.RowCount = rowcount
|
|
|
|
indent, err := info.GetBool(m, "indent")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
jo.Indent = indent
|
|
|
|
fieldsStr, err := info.GetStringArray(m, "fields")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Check to make sure fields has length
|
|
if len(fieldsStr) > 0 {
|
|
jo.Fields = make([]Field, len(fieldsStr))
|
|
|
|
for i, f := range fieldsStr {
|
|
// Unmarshal fields string into fields array
|
|
err = json.Unmarshal([]byte(f), &jo.Fields[i])
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
}
|
|
|
|
f := &Faker{Rand: r}
|
|
return jsonFunc(f, &jo)
|
|
},
|
|
})
|
|
}
|
|
|
|
// encoding/json.RawMessage is a special case of []byte
|
|
// it cannot be handled as a reflect.Array/reflect.Slice
|
|
// because it needs additional structure in the output
|
|
func rJsonRawMessage(f *Faker, t reflect.Type, v reflect.Value, tag string, size int) error {
|
|
b, err := f.JSON(nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
v.SetBytes(b)
|
|
return nil
|
|
}
|
|
|
|
// encoding/json.Number is a special case of string
|
|
// that represents a JSON number literal.
|
|
// It cannot be handled as a string because it needs to
|
|
// represent an integer or a floating-point number.
|
|
func rJsonNumber(f *Faker, t reflect.Type, v reflect.Value, tag string, size int) error {
|
|
var ret json.Number
|
|
|
|
var numberType string
|
|
|
|
if tag == "" {
|
|
numberType = f.RandomString([]string{"int", "float"})
|
|
|
|
switch numberType {
|
|
case "int":
|
|
retInt := f.Int16()
|
|
ret = json.Number(strconv.Itoa(int(retInt)))
|
|
case "float":
|
|
retFloat := f.Float64()
|
|
ret = json.Number(strconv.FormatFloat(retFloat, 'f', -1, 64))
|
|
}
|
|
} else {
|
|
fName, fParams := parseNameAndParamsFromTag(tag)
|
|
info := GetFuncLookup(fName)
|
|
if info == nil {
|
|
return fmt.Errorf("invalid function, %s does not exist", fName)
|
|
}
|
|
|
|
// Parse map params
|
|
mapParams := parseMapParams(info, fParams)
|
|
|
|
valueIface, err := info.Generate(f.Rand, mapParams, info)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
switch value := valueIface.(type) {
|
|
case int:
|
|
ret = json.Number(strconv.FormatInt(int64(value), 10))
|
|
case int8:
|
|
ret = json.Number(strconv.FormatInt(int64(value), 10))
|
|
case int16:
|
|
ret = json.Number(strconv.FormatInt(int64(value), 10))
|
|
case int32:
|
|
ret = json.Number(strconv.FormatInt(int64(value), 10))
|
|
case int64:
|
|
ret = json.Number(strconv.FormatInt(int64(value), 10))
|
|
case uint:
|
|
ret = json.Number(strconv.FormatUint(uint64(value), 10))
|
|
case uint8:
|
|
ret = json.Number(strconv.FormatUint(uint64(value), 10))
|
|
case uint16:
|
|
ret = json.Number(strconv.FormatUint(uint64(value), 10))
|
|
case uint32:
|
|
ret = json.Number(strconv.FormatUint(uint64(value), 10))
|
|
case uint64:
|
|
ret = json.Number(strconv.FormatUint(uint64(value), 10))
|
|
case float32:
|
|
ret = json.Number(strconv.FormatFloat(float64(value), 'f', -1, 64))
|
|
case float64:
|
|
ret = json.Number(strconv.FormatFloat(float64(value), 'f', -1, 64))
|
|
default:
|
|
return fmt.Errorf("invalid type, %s is not a valid type for json.Number", reflect.TypeOf(value))
|
|
}
|
|
}
|
|
v.Set(reflect.ValueOf(ret))
|
|
return nil
|
|
}
|