From 055f5a826d360398f7a4d495def80e1b08fadb44 Mon Sep 17 00:00:00 2001
From: Samuel Mutel <samuel.mutel@deveryware.com>
Date: Thu, 12 Oct 2023 17:51:40 +0200
Subject: [PATCH] feat: Manage ini files

---
 cmd/utils.go             |  2 ++
 go.mod                   |  1 +
 go.sum                   |  2 ++
 pkg/yqlib/decoder.go     |  5 ++++-
 pkg/yqlib/decoder_ini.go | 37 +++++++++++++++++++++++++++++++++++++
 5 files changed, 46 insertions(+), 1 deletion(-)
 create mode 100644 pkg/yqlib/decoder_ini.go

diff --git a/cmd/utils.go b/cmd/utils.go
index 331a65e5..a9df3743 100644
--- a/cmd/utils.go
+++ b/cmd/utils.go
@@ -130,6 +130,8 @@ func configureDecoder(evaluateTogether bool) (yqlib.Decoder, error) {
 
 func createDecoder(format yqlib.InputFormat, evaluateTogether bool) (yqlib.Decoder, error) {
 	switch format {
+	case yqlib.IniInputFormat:
+		return yqlib.NewIniDecoder(), nil
 	case yqlib.LuaInputFormat:
 		return yqlib.NewLuaDecoder(yqlib.ConfiguredLuaPreferences), nil
 	case yqlib.XMLInputFormat:
diff --git a/go.mod b/go.mod
index c755e5f0..46bf14d1 100644
--- a/go.mod
+++ b/go.mod
@@ -18,6 +18,7 @@ require (
 	github.com/yuin/gopher-lua v1.1.0
 	golang.org/x/net v0.17.0
 	golang.org/x/text v0.13.0
+	gopkg.in/ini.v1 v1.67.0
 	gopkg.in/op/go-logging.v1 v1.0.0-20160211212156-b2cb9fa56473
 	gopkg.in/yaml.v3 v3.0.1
 )
diff --git a/go.sum b/go.sum
index fde4c7ca..427c83cd 100644
--- a/go.sum
+++ b/go.sum
@@ -63,6 +63,8 @@ golang.org/x/xerrors v0.0.0-20220609144429-65e65417b02f h1:uF6paiQQebLeSXkrTqHqz
 golang.org/x/xerrors v0.0.0-20220609144429-65e65417b02f/go.mod h1:K8+ghG5WaK9qNqU5K3HdILfMLy1f3aNYFI/wnl100a8=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/ini.v1 v1.67.0 h1:Dgnx+6+nfE+IfzjUEISNeydPJh9AXNNsWbGP9KzCsOA=
+gopkg.in/ini.v1 v1.67.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/op/go-logging.v1 v1.0.0-20160211212156-b2cb9fa56473 h1:6D+BvnJ/j6e222UW8s2qTSe3wGBtvo0MbVQG/c5k8RE=
 gopkg.in/op/go-logging.v1 v1.0.0-20160211212156-b2cb9fa56473/go.mod h1:N1eN2tsCx0Ydtgjl4cqmbRCsY4/+z4cYDeqwZTk6zog=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/pkg/yqlib/decoder.go b/pkg/yqlib/decoder.go
index 284b4316..e56892e6 100644
--- a/pkg/yqlib/decoder.go
+++ b/pkg/yqlib/decoder.go
@@ -19,6 +19,7 @@ const (
 	TomlInputFormat
 	UriInputFormat
 	LuaInputFormat
+	IniInputFormat
 )
 
 type Decoder interface {
@@ -44,8 +45,10 @@ func InputFormatFromString(format string) (InputFormat, error) {
 		return TomlInputFormat, nil
 	case "lua", "l":
 		return LuaInputFormat, nil
+	case "ini", "i":
+		return IniInputFormat, nil
 	default:
-		return 0, fmt.Errorf("unknown format '%v' please use [yaml|json|props|csv|tsv|xml|toml]", format)
+		return 0, fmt.Errorf("unknown format '%v' please use [yaml|json|props|csv|tsv|xml|toml|ini]", format)
 	}
 }
 
diff --git a/pkg/yqlib/decoder_ini.go b/pkg/yqlib/decoder_ini.go
new file mode 100644
index 00000000..4a3b9fe3
--- /dev/null
+++ b/pkg/yqlib/decoder_ini.go
@@ -0,0 +1,37 @@
+package yqlib
+
+import (
+	"io"
+
+	ini "gopkg.in/ini.v1"
+)
+
+type iniDecoder struct {
+	cfg      *ini.File
+	finished bool
+}
+
+func NewIniDecoder() Decoder {
+	return &iniDecoder{
+		finished: false,
+	}
+}
+
+func (dec *iniDecoder) Init(reader io.Reader) error {
+	var err error
+	dec.cfg, err = ini.Load(reader)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (dec *iniDecoder) Decode() (*CandidateNode, error) {
+	if dec.finished {
+		return nil, io.EOF
+	}
+
+	log.Debug("ok here we go")
+	return nil, nil
+}