Feature: update config API support raw yaml payload

hub/executor/executor.go

@@ -1,6 +1,11 @@
 package executor
 
 import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+
 	"github.com/Dreamacro/clash/component/auth"
 	trie "github.com/Dreamacro/clash/component/domain-trie"
 	"github.com/Dreamacro/clash/config"
@@ -12,6 +17,41 @@ import (
 	T "github.com/Dreamacro/clash/tunnel"
 )
 
+// forward compatibility before 1.0
+func readRawConfig(path string) ([]byte, error) {
+	data, err := ioutil.ReadFile(path)
+	if err == nil && len(data) != 0 {
+		return data, nil
+	}
+
+	if filepath.Ext(path) != ".yaml" {
+		return nil, err
+	}
+
+	path = path[:len(path)-5] + ".yml"
+	if _, fallbackErr := os.Stat(path); fallbackErr == nil {
+		return ioutil.ReadFile(path)
+	}
+
+	return data, err
+}
+
+func readConfig(path string) ([]byte, error) {
+	if _, err := os.Stat(path); os.IsNotExist(err) {
+		return nil, err
+	}
+	data, err := readRawConfig(path)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(data) == 0 {
+		return nil, fmt.Errorf("Configuration file %s is empty", path)
+	}
+
+	return data, err
+}
+
 // Parse config with default config path
 func Parse() (*config.Config, error) {
 	return ParseWithPath(C.Path.Config())
@@ -19,7 +59,17 @@ func Parse() (*config.Config, error) {
 
 // ParseWithPath parse config with custom config path
 func ParseWithPath(path string) (*config.Config, error) {
-	return config.Parse(path)
+	buf, err := readConfig(path)
+	if err != nil {
+		return nil, err
+	}
+
+	return config.Parse(buf)
+}
+
+// Parse config with default config path
+func ParseWithBytes(buf []byte) (*config.Config, error) {
+	return ParseWithPath(C.Path.Config())
 }
 
 // ApplyConfig dispatch configure to all parts