[#4] linters: Add configuration through ENV

Signed-off-by: Alexander Chuprov <a.chuprov@yadro.com>

main.go

@@ -1,6 +1,9 @@
 package main
 
 import (
+	"os"
+	"strings"
+
 	noliteral "git.frostfs.info/TrueCloudLab/linters/internal/analyzers/noliteral"
 	"github.com/mitchellh/mapstructure"
 	"golang.org/x/tools/go/analysis"
@@ -12,22 +15,34 @@ type analyzerPlugin struct{}
 
 // for version ci-lint < '1.5.4'.
 func (*analyzerPlugin) GetAnalyzers() []*analysis.Analyzer {
-	return []*analysis.Analyzer{noliteral.LogsAnalyzer}
+	analyzer, _ := New(nil)
+	return analyzer
 }
 
 // for version ci-lint >= '1.5.4'.
 func New(conf any) ([]*analysis.Analyzer, error) {
-	var config noliteral.Configuration
+	targetMethods := strings.Split(os.Getenv("NOLITERAL_TARGET_METHODS"), ",")
+	constantsPackage := os.Getenv("NOLITERAL_CONSTANTS_PACKAGE")
+
+	configMap := map[string]any{
+		"target-methods":    targetMethods,
+		"constants-package": constantsPackage,
+	}
 
 	if confMap, ok := conf.(map[string]any); ok {
-		err := mapstructure.Decode(confMap, &config)
+		for k, v := range confMap {
-		if err != nil {
+			configMap[k] = v
-			return nil, err
 		}
-
-		noliteral.Config.TargetMethods = append(noliteral.Config.TargetMethods, config.TargetMethods...)
-		noliteral.Config.ConstantsPackage = config.ConstantsPackage
 	}
 
+	var config noliteral.Configuration
+	err := mapstructure.Decode(configMap, &config)
+	if err != nil {
+		return nil, err
+	}
+
+	noliteral.Config.TargetMethods = append(noliteral.Config.TargetMethods, config.TargetMethods...)
+	noliteral.Config.ConstantsPackage = config.ConstantsPackage
+
 	return []*analysis.Analyzer{noliteral.LogsAnalyzer}, nil
 }