Jan Klattenhoff
e332ef87cb
Reviewed-on: #11 Co-authored-by: Jan Klattenhoff <jan@kjan.email> Co-committed-by: Jan Klattenhoff <jan@kjan.email>
78 lines
2.2 KiB
Go
78 lines
2.2 KiB
Go
// Package validation General validation tasks
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package validation
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import (
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"fmt"
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"regexp"
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"strings"
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)
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// ValidateConventionalCommit validates if string follows conventional commit
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func ValidateConventionalCommit(commit string) error {
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// Regex to match the commit format
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// type(scope)!: description
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// or
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// type!: description
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// or
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// type: description
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re := regexp.MustCompile(`^(?P<type>[a-z]+)(?P<scope>\([a-z]+\))?(?P<breaking>!)?: (?P<description>.+)$`)
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match := re.FindStringSubmatch(commit)
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if len(match) == 0 {
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return fmt.Errorf("invalid commit format")
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}
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typeIndex := re.SubexpIndex("type")
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scopeIndex := re.SubexpIndex("scope")
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breakingIndex := re.SubexpIndex("breaking")
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commitType := match[typeIndex]
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scope := match[scopeIndex]
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breaking := match[breakingIndex]
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// Type MUST be lowercase
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if commitType != strings.ToLower(commitType) {
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return fmt.Errorf("type must be lowercase")
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}
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// Scope MUST be lowercase
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if scope != "" && scope != strings.ToLower(scope) {
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return fmt.Errorf("scope must be lowercase")
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}
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// Check for breaking change indicator
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hasBreakingChangeFooter := strings.Contains(commit, "BREAKING CHANGE:")
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if breaking == "!" && hasBreakingChangeFooter {
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return fmt.Errorf("breaking change indicator and footer are mutually exclusive")
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}
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lines := strings.Split(commit, "\n")
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if len(lines) > 1 {
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body := strings.Join(lines[1:], "\n")
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// Check if body is separated from description by a blank line
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if !strings.HasPrefix(body, "\n") {
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return fmt.Errorf("body must be separated from description by a blank line")
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}
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}
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// Check for footers
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footerRegex := regexp.MustCompile(`(?m)^(?P<token>[A-Za-z-]+|BREAKING CHANGE): (?P<value>.*)$`)
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footerMatches := footerRegex.FindAllStringSubmatch(commit, -1)
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for _, footerMatch := range footerMatches {
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tokenIndex := footerRegex.SubexpIndex("token")
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token := footerMatch[tokenIndex]
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// BREAKING-CHANGE MUST be synonymous with BREAKING CHANGE
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if token == "BREAKING-CHANGE" {
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continue
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}
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// Token MUST use - in place of whitespace characters, except for BREAKING CHANGE
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if token != "BREAKING CHANGE" && strings.Contains(token, " ") {
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return fmt.Errorf("footer token must use - in place of whitespace characters")
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}
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}
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return nil
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}
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