feat: move lang, lineLimit and bodyRequired into cfg.json

Author: JayceChant

.gitignore

@@ -10,3 +10,6 @@
 
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
+
+# config file
+*.cfg.json

commit-msg.go

@@ -78,15 +78,15 @@ func checkHeader(header string) {
 	// subject := groups[5] // TODO: 根据规则对subject检查
 
 	length := len(header)
-	if length > LINE_LIMIT &&
+	if length > config.LineLimit &&
 		!(isFixupOrSquash || type_ == "revert" || type_ == "Revert") {
-		logAndExit(LineOverLong, length, LINE_LIMIT, header)
+		logAndExit(LineOverLong, length, config.LineLimit, header)
 	}
 }
 
 func checkBody(body string) {
 	if checkEmpty(body) {
-		if BODY_REQUIRED {
+		if config.BodyRequired {
 			logAndExit(BodyMissing)
 		} else {
 			logAndExit(Validated)
@@ -99,8 +99,8 @@ func checkBody(body string) {
 
 	for _, line := range strings.Split(body, "\n") {
 		length := len(line)
-		if length > LINE_LIMIT {
-			logAndExit(LineOverLong, length, LINE_LIMIT, line)
+		if length > config.LineLimit {
+			logAndExit(LineOverLong, length, config.LineLimit, line)
 		}
 	}
 }
@@ -125,7 +125,7 @@ func validateMsg(msg string) {
 
 	if len(sections) == 2 {
 		checkBody(sections[1])
-	} else if BODY_REQUIRED {
+	} else if config.BodyRequired {
 		logAndExit(BodyMissing)
 	}
 

config.go

@@ -1,12 +1,22 @@
 package main
 
+import (
+	"encoding/json"
+	"os"
+)
+
 const (
 	MERGE_PATTERN  = `^Merge `
 	HEADER_PATTERN = `^((fixup! |squash! )?(\w+)(?:\(([^\)\s]+)\))?: (.+))(?:\n|$)`
-	LINE_LIMIT     = 80
-	BODY_REQUIRED  = false
+	CONFIG_FILE    = "commit-msg.cfg.json"
 )
 
+type Config struct {
+	Lang         string
+	BodyRequired bool
+	LineLimit    int
+}
+
 type MsgState int
 
 const (
@@ -29,7 +39,7 @@ const (
 )
 
 var (
-	lang      = "zh-CN"
+	config    *Config
 	stateHint []string
 	ruleHint  string
 	typeList  = [...]string{
@@ -102,9 +112,40 @@ if you can not find any error after check, maybe you use Chinese colon, or lack
 	}
 )
 
+func loadConfig() *Config {
+	f, err := os.Open(CONFIG_FILE)
+	if err != nil {
+		return nil
+	}
+	defer f.Close()
+	dec := json.NewDecoder(f)
+	var cfg Config
+	if err := dec.Decode(&cfg); err != nil {
+		return nil
+	}
+	return &cfg
+}
+
+func initConfig() *Config {
+	cfg := &Config{"en", false, 80}
+	f, err := os.Create(CONFIG_FILE)
+	if err != nil {
+		return cfg
+	}
+	defer f.Close()
+	enc := json.NewEncoder(f)
+	enc.SetIndent("", "    ")
+	enc.Encode(cfg)
+	return cfg
+}
+
 func init() {
-	// lang = "zh-CN"
-	switch lang {
+	config = loadConfig()
+	if config == nil {
+		config = initConfig()
+	}
+
+	switch config.Lang {
 	case "zh-CN":
 		stateHint = zhCnHint[:]
 		ruleHint = zhCnRule