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json.go
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json.go
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package spruce
import (
"bytes"
"encoding/json"
"fmt"
"io"
"os"
"github.com/starkandwayne/goutils/ansi"
"github.com/geofffranks/simpleyaml"
. "github.com/geofffranks/spruce/log"
)
func jsonifyData(data []byte, strict bool) (string, error) {
y, err := simpleyaml.NewYaml(data)
if err != nil {
return "", err
}
doc, err := y.Map()
if err != nil {
return "", ansi.Errorf("@R{Root of YAML document is not a hash/map}: %s\n", err.Error())
}
doc_, err := deinterface(doc, strict)
if err != nil {
return "", err
}
b, err := json.Marshal(doc_)
if err != nil {
return "", err
}
return string(b), nil
}
func JSONifyIO(in io.Reader, strict bool) (string, error) {
data, err := io.ReadAll(in)
if err != nil {
return "", ansi.Errorf("@R{Error reading input}: %s", err)
}
return jsonifyData(data, strict)
}
func JSONifyFiles(paths []string, strict bool) ([]string, error) {
l := []string{}
var err error
for _, path := range paths {
data := []byte{}
if path == "-" {
DEBUG("Processing STDIN")
stat, err := os.Stdin.Stat()
if err != nil {
return nil, ansi.Errorf("@R{Error statting STDIN} - Bailing out: %s\n", err.Error())
}
if stat.Mode()&os.ModeCharDevice == 0 {
data, err = io.ReadAll(os.Stdin)
if err != nil {
return nil, ansi.Errorf("@R{Error reading STDIN}: %s\n", err.Error())
}
}
} else {
DEBUG("Processing file '%s'", path)
data, err = os.ReadFile(path)
if err != nil {
return nil, ansi.Errorf("@R{Error reading file} @m{%s}: %s", path, err)
}
}
docs := bytes.Split(data, []byte("\n---\n"))
// strip off empty document created if the first three bytes of the file are the doc separator
// keeps the indexing correct for when used with error messages
if len(docs[0]) == 0 {
docs = docs[1:]
}
for i, doc := range docs {
jsonData, err := jsonifyData(doc, strict)
if err != nil {
return nil, ansi.Errorf("%s[%d]: %s", path, i, err)
}
l = append(l, jsonData)
}
}
return l, nil
}
func deinterface(o interface{}, strict bool) (interface{}, error) {
switch o.(type) {
case map[interface{}]interface{}:
return deinterfaceMap(o.(map[interface{}]interface{}), strict)
case []interface{}:
return deinterfaceList(o.([]interface{}), strict)
default:
return o, nil
}
}
func addKeyToMap(m map[string]interface{}, k interface{}, v interface{}, strict bool) error {
vs := fmt.Sprintf("%v", k)
_, exists := m[vs]
if exists {
NewWarningError(eContextAll, "@Y{Duplicate key detected: %s}", vs).Warn()
return nil
}
dv, err := deinterface(v, strict)
if err != nil {
return err
}
m[vs] = dv
return nil
}
func deinterfaceMap(o map[interface{}]interface{}, strict bool) (map[string]interface{}, error) {
m := map[string]interface{}{}
for k, v := range o {
switch k.(type) {
case string:
err := addKeyToMap(m, k, v, strict)
if err != nil {
return nil, err
}
default:
if strict {
return nil, fmt.Errorf("Non-string keys found during strict JSON conversion")
} else {
addKeyToMap(m, k, v, strict)
}
}
}
return m, nil
}
func deinterfaceList(o []interface{}, strict bool) ([]interface{}, error) {
l := make([]interface{}, len(o))
for i, v := range o {
v_, err := deinterface(v, strict)
if err != nil {
return nil, err
}
l[i] = v_
}
return l, nil
}