chore: rename gtpl to go.tpl and fix config

codegen/codegen.go

@@ -29,7 +29,7 @@ import (
 	"golang.org/x/tools/imports"
 )
 
-//go:embed templates/*.gotpl
+//go:embed templates/*.go.tpl
 var codegenTemplates embed.FS
 
 type tagOption string
@@ -88,9 +88,10 @@ var path2regex = strings.NewReplacer(
 	`/`, `[\\/]`,
 )
 
-func Generate(cfg *config.Config) error {
+func Generate(c *config.Config) error {
 	var (
 		srcDir  string
+		cfg     = c.Clone()
 		sources = make([]string, len(cfg.Source))
 	)
 
@@ -416,7 +417,7 @@ func parseGoPackage(cfg *config.Config, rootDir string, dirs []string, matcher M
 		}
 
 		blr := bytes.NewBufferString("")
-		tmplName := "model.gotpl"
+		tmplName := "model.go.tpl"
 		tmpl, err := template.New(tmplName).Funcs(template.FuncMap{
 			"quote":         strconv.Quote,
 			"createTable":   createTableStmt,

codegen/config/config.go

@@ -25,9 +25,12 @@ const (
 	PascalCase naming = "PascalCase"
 )
 
-const ConfigFile = "sqlgen.yml"
+const (
+	DefaultConfigFile    = "sqlgen.yml"
+	DefaultGeneratedFile = "generated.go"
+)
 
-var cfgFilenames = []string{ConfigFile, ".sqlgen.yml", ".sqlgen.yaml", "sqlgen.yaml"}
+var cfgFilenames = []string{DefaultConfigFile, ".sqlgen.yml", ".sqlgen.yaml", "sqlgen.yaml"}
 
 type Config struct {
 	Source           []string  `yaml:"src"`
@@ -54,12 +57,53 @@ func (c *Config) init() {
 	c.Tag = "sql"
 	c.Driver = MySQL
 	c.Strict = true
-	c.Exec.Filename = "generated.go"
+	c.Exec.Filename = DefaultGeneratedFile
 	c.Database.Package = "db"
 	c.Database.Dir = "db"
 	c.Database.Filename = "db.go"
 }
 
+func (c Config) Clone() *Config {
+	newConfig := &Config{}
+	newConfig.init()
+	newConfig.Source = make([]string, len(c.Source))
+	copy(newConfig.Source, c.Source)
+	if c.Driver != "" {
+		newConfig.Driver = c.Driver
+	}
+	if c.NamingConvention != "" {
+		newConfig.NamingConvention = c.NamingConvention
+	}
+	if c.Tag != "" {
+		newConfig.Tag = c.Tag
+	}
+	if c.Exec.Filename != "" {
+		newConfig.Exec.Filename = c.Exec.Filename
+	}
+	if c.Database.Dir != "" {
+		newConfig.Database.Dir = c.Database.Dir
+	}
+	if c.Database.Package != "" {
+		newConfig.Database.Package = c.Database.Package
+	}
+	if c.Database.Filename != "" {
+		newConfig.Database.Filename = c.Database.Filename
+	}
+	if c.Strict != newConfig.Strict {
+		newConfig.Strict = c.Strict
+	}
+	if c.SkipHeader != newConfig.SkipHeader {
+		newConfig.SkipHeader = c.SkipHeader
+	}
+	if c.SourceMap != newConfig.SourceMap {
+		newConfig.SourceMap = c.SourceMap
+	}
+	if c.SkipModTidy != newConfig.SkipModTidy {
+		newConfig.SkipModTidy = c.SkipModTidy
+	}
+	return newConfig
+}
+
 func (c Config) RenameFunc() func(string) string {
 	switch c.NamingConvention {
 	case SnakeCase:

codegen/generate.go

@@ -8,12 +8,12 @@ import (
 )
 
 func Init(cfg *config.Config) error {
-	tmpl, err := template.ParseFS(codegenTemplates, "templates/init.yml.gotpl")
+	tmpl, err := template.ParseFS(codegenTemplates, "templates/init.yml.go.tpl")
 	if err != nil {
 		return err
 	}
 
-	w, err := os.OpenFile(config.ConfigFile, os.O_RDWR|os.O_CREATE, 0o644)
+	w, err := os.OpenFile(config.DefaultConfigFile, os.O_RDWR|os.O_CREATE, 0o644)
 	if err != nil {
 		return err
 	}