64 lines
1.4 KiB
Go
64 lines
1.4 KiB
Go
 
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package commits
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import (
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"regexp"
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"strings"
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)
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// Type represents the semantic weight of a commit for versioning purposes.
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type Type int
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const (
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TypeNone Type = iota // no version bump
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TypeFix // fix: → patch bump
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TypeFeat // feat: → patch bump (minor is pinned to branch)
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TypeBreaking // feat!: or BREAKING CHANGE → patch bump
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)
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// headerRe matches conventional commit headers in non-strict mode:
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// case-insensitive, optional scope, optional breaking marker, flexible whitespace around colon.
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var headerRe = regexp.MustCompile(`(?i)^(\w+)(?:\([^)]*\))?(!)?\s*:\s*\S`)
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// Parse extracts the commit type from a commit message.
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// Unparseable messages return TypeNone — never an error.
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func Parse(message string) Type {
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msg := strings.TrimSpace(message)
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// BREAKING CHANGE anywhere in the body/footer takes priority (spec §10).
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if strings.Contains(msg, "BREAKING CHANGE") {
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return TypeBreaking
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}
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first := strings.SplitN(msg, "\n", 2)[0]
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m := headerRe.FindStringSubmatch(first)
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if m == nil {
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return TypeNone
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}
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if m[2] == "!" {
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return TypeBreaking
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}
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switch strings.ToLower(m[1]) {
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case "feat":
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return TypeFeat
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case "fix":
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return TypeFix
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default:
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return TypeNone
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}
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}
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func (t Type) String() string {
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switch t {
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case TypeFix:
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return "fix"
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case TypeFeat:
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return "feat"
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case TypeBreaking:
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return "breaking"
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default:
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return "none"
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}
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}
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