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package udf
import (
"fmt"
"github.com/viant/toolbox"
"github.com/viant/toolbox/data"
"gopkg.in/yaml.v2"
"strings"
)
//AsInt converts source into int
func AsInt(source interface{}, state data.Map) (interface{}, error) {
return toolbox.ToInt(source)
}
//AsInt converts source into int
func AsString(source interface{}, state data.Map) (interface{}, error) {
isNonByteSlice := toolbox.IsSlice(source)
if isNonByteSlice {
if _, isByteArray := source.([]byte); isByteArray {
isNonByteSlice = false
}
}
if isNonByteSlice || toolbox.IsMap(source) || toolbox.IsStruct(source) {
text, err := toolbox.AsJSONText(source)
if err == nil {
return text, nil
}
}
if toolbox.IsNumber(source) {
source, _ = AsNumber(source, state)
}
return toolbox.AsString(source), nil
}
//Lower converts string to lower case
func ToLower(source interface{}, state data.Map) (interface{}, error) {
return strings.ToLower(toolbox.AsString(source)), nil
}
//Lower converts string to upper case
func ToUpper(source interface{}, state data.Map) (interface{}, error) {
return strings.ToUpper(toolbox.AsString(source)), nil
}
//AsFloat converts source into float64
func AsFloat(source interface{}, state data.Map) (interface{}, error) {
return toolbox.AsFloat(source), nil
}
//AsFloat32 converts source into float32
func AsFloat32(source interface{}, state data.Map) (interface{}, error) {
return float32(toolbox.AsFloat(source)), nil
}
//AsFloat32 converts source into float32
func AsFloat32Ptr(source interface{}, state data.Map) (interface{}, error) {
result := float32(toolbox.AsFloat(source))
return &result, nil
}
//AsBool converts source into bool
func AsBool(source interface{}, state data.Map) (interface{}, error) {
return toolbox.AsBoolean(source), nil
}
//AsMap converts source into map
func AsMap(source interface{}, state data.Map) (interface{}, error) {
if source == nil || toolbox.IsMap(source) {
return source, nil
}
source = convertToTextIfNeeded(source)
if text, ok := source.(string); ok {
text = strings.TrimSpace(text)
aMap := map[string]interface{}{}
if strings.HasPrefix(text, "{") || strings.HasSuffix(text, "}") {
if err := toolbox.NewJSONDecoderFactory().Create(strings.NewReader(text)).Decode(&aMap); err != nil {
return nil, err
}
}
if err := yaml.NewDecoder(strings.NewReader(toolbox.AsString(source))).Decode(&aMap); err != nil {
return nil, err
}
return toolbox.NormalizeKVPairs(aMap)
}
return toolbox.ToMap(source)
}
//AsCollection converts source into a slice
func AsCollection(source interface{}, state data.Map) (interface{}, error) {
if source == nil || toolbox.IsSlice(source) {
return source, nil
}
source = convertToTextIfNeeded(source)
if text, ok := source.(string); ok {
text = strings.TrimSpace(text)
if strings.HasPrefix(text, "[") || strings.HasSuffix(text, "[") {
aSlice := []interface{}{}
if err := toolbox.NewJSONDecoderFactory().Create(strings.NewReader(text)).Decode(&aSlice); err != nil {
return nil, err
}
}
var aSlice interface{}
if err := yaml.NewDecoder(strings.NewReader(toolbox.AsString(source))).Decode(&aSlice); err != nil {
return nil, err
}
return toolbox.NormalizeKVPairs(aSlice)
}
return nil, fmt.Errorf("unable convert to slice, unsupported type: %T", source)
}
//AsData converts source into map or slice
func AsData(source interface{}, state data.Map) (interface{}, error) {
if source == nil || toolbox.IsMap(source) || toolbox.IsSlice(source) {
return source, nil
}
var aData interface{}
source = convertToTextIfNeeded(source)
if text, ok := source.(string); ok {
text = strings.TrimSpace(text)
if strings.HasPrefix(text, "[") || strings.HasSuffix(text, "[") || strings.HasPrefix(text, "{") || strings.HasSuffix(text, "}") {
if err := toolbox.NewJSONDecoderFactory().Create(strings.NewReader(text)).Decode(&aData); err != nil {
return nil, err
}
}
if err := yaml.NewDecoder(strings.NewReader(toolbox.AsString(source))).Decode(&aData); err != nil {
return nil, err
}
return toolbox.NormalizeKVPairs(aData)
}
return source, nil
}
func convertToTextIfNeeded(data interface{}) interface{} {
if data == nil {
return data
}
if bs, ok := data.([]byte); ok {
return string(bs)
}
return data
}
//AsJSON converts source to JSON
func AsJSON(source interface{}, state data.Map) (interface{}, error) {
return toolbox.AsIndentJSONText(source)
}
//Type returns source type
func Type(source interface{}, state data.Map) (interface{}, error) {
return fmt.Printf("%T", source)
}
//AsStringMap returns map[string]string
func AsStringMap(source interface{}, state data.Map) (interface{}, error) {
if source == nil && !toolbox.IsMap(source) {
return nil, fmt.Errorf("not a map")
}
var result = make(map[string]string)
for k, v := range toolbox.AsMap(source) {
result[k] = toolbox.AsString(v)
}
return result, nil
}
|
