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package ini
import (
"bytes"
"sort"
"strings"
"github.com/spf13/cast"
"gopkg.in/ini.v1"
)
// LoadOptions contains all customized options used for load data source(s).
// This type is added here for convenience: this way consumers can import a single package called "ini".
type LoadOptions = ini.LoadOptions
// Codec implements the encoding.Encoder and encoding.Decoder interfaces for INI encoding.
type Codec struct {
KeyDelimiter string
LoadOptions LoadOptions
}
func (c Codec) Encode(v map[string]any) ([]byte, error) {
cfg := ini.Empty()
ini.PrettyFormat = false
flattened := map[string]any{}
flattened = flattenAndMergeMap(flattened, v, "", c.keyDelimiter())
keys := make([]string, 0, len(flattened))
for key := range flattened {
keys = append(keys, key)
}
sort.Strings(keys)
for _, key := range keys {
sectionName, keyName := "", key
lastSep := strings.LastIndex(key, ".")
if lastSep != -1 {
sectionName = key[:(lastSep)]
keyName = key[(lastSep + 1):]
}
// TODO: is this a good idea?
if sectionName == "default" {
sectionName = ""
}
cfg.Section(sectionName).Key(keyName).SetValue(cast.ToString(flattened[key]))
}
var buf bytes.Buffer
_, err := cfg.WriteTo(&buf)
if err != nil {
return nil, err
}
return buf.Bytes(), nil
}
func (c Codec) Decode(b []byte, v map[string]any) error {
cfg := ini.Empty(c.LoadOptions)
err := cfg.Append(b)
if err != nil {
return err
}
sections := cfg.Sections()
for i := 0; i < len(sections); i++ {
section := sections[i]
keys := section.Keys()
for j := 0; j < len(keys); j++ {
key := keys[j]
value := cfg.Section(section.Name()).Key(key.Name()).String()
deepestMap := deepSearch(v, strings.Split(section.Name(), c.keyDelimiter()))
// set innermost value
deepestMap[key.Name()] = value
}
}
return nil
}
func (c Codec) keyDelimiter() string {
if c.KeyDelimiter == "" {
return "."
}
return c.KeyDelimiter
}
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