add: import code

портирован код из старого репозитория https://di9.ru/git/Voomra/Conventional-Commits

internal/commitlint/validator/validator.go

@@ -0,0 +1,90 @@
+package validator
+
+import (
+	"commitlint/internal/commitlint/configuration"
+	"regexp"
+	"slices"
+)
+
+type Result int
+
+const (
+	IncorrectPattern Result = iota
+	UnknownType
+	UnknownContext
+	OverlongLine
+	BlankLine
+)
+
+type ValidateError struct {
+	// Тип проблемы
+	Result Result
+
+	// Проблемная строка в коммите. Начинается с 1
+	Line int
+
+	// Переданный не известный тип
+	UnknownType string
+
+	// Переданный не известный контекст
+	UnknownContext string
+}
+
+func Validate(commitMessage []string, config configuration.Config) *ValidateError {
+	if pResult := validateFirstLine(commitMessage[0], config); pResult != nil {
+		return pResult
+	}
+
+	if len(commitMessage) > 1 {
+		if pResult := validateBody(commitMessage[1:], config); pResult != nil {
+			return pResult
+		}
+	}
+
+	return nil
+}
+
+func validateFirstLine(line string, config configuration.Config) *ValidateError {
+	for _, pExclude := range config.Excludes {
+		if pExclude.MatchString(line) {
+			return nil
+		}
+	}
+
+	commitFirstLine := regexp.MustCompile("^([a-z0-9]+?)!?(?:\\(([a-z0-9]+?)\\))?: .+$")
+	match := commitFirstLine.FindAllStringSubmatch(line, -1)
+
+	if len(match) == 0 {
+		return &ValidateError{Result: IncorrectPattern, Line: 1}
+	}
+
+	commitType := match[0][1]
+	if !slices.Contains(config.Types, commitType) {
+		return &ValidateError{Result: UnknownType, Line: 1, UnknownType: commitType}
+	}
+
+	commitContext := match[0][2]
+	if len(commitContext) > 0 && !slices.Contains(config.Contexts, commitContext) {
+		return &ValidateError{Result: UnknownContext, Line: 1, UnknownContext: commitContext}
+	}
+
+	if len(line) > config.MaxLengthLine {
+		return &ValidateError{Result: OverlongLine, Line: 1}
+	}
+
+	return nil
+}
+
+func validateBody(body []string, config configuration.Config) *ValidateError {
+	if len(body[0]) > 0 {
+		return &ValidateError{Result: BlankLine, Line: 2}
+	}
+
+	for i, line := range body[1:] {
+		if len(line) > config.MaxLengthLine {
+			return &ValidateError{Result: OverlongLine, Line: i + 3}
+		}
+	}
+
+	return nil
+}