Update the error code handling

defaults.toml

@@ -1,6 +1,8 @@
-ignore-generated-header = true
+ignoreGeneratedHeader = true
 severity = "warning"
 confidence = 0.8
+errorCode = 0
+warningCode = 0
 
 [rule.package-comments]
 [rule.else]

lint/rule.go

@@ -60,10 +60,12 @@ type RulesConfig = map[string]RuleConfig
 
 // Config defines the config of the linter.
 type Config struct {
-	IgnoreGeneratedHeader bool `toml:"ignore-generated-header"`
+	IgnoreGeneratedHeader bool `toml:"ignoreGeneratedHeader"`
 	Confidence            float64
 	Severity              Severity
 	Rules                 RulesConfig `toml:"rule"`
+	ErrorCode             int         `toml:"errorCode"`
+	WarningCode           int         `toml:"warningCode"`
 }
 
 // Rule defines an abstract rule interaface

main.go

@@ -50,10 +50,10 @@ func main() {
 			continue
 		}
 		if exitCode == 0 {
-			exitCode = 1
+			exitCode = config.WarningCode
 		}
 		if c, ok := config.Rules[f.RuleName]; ok && c.Severity == lint.SeverityError {
-			exitCode = 2
+			exitCode = config.ErrorCode
 		}
 		formatChan <- f
 	}