da289d4a7e
- Add complete domain layer: Note, Vault, WikiLink, Tag, Frontmatter, Graph entities - Implement repository interfaces for data access abstraction - Create comprehensive configuration system with YAML and env support - Add CLI entry point with signal handling and graceful shutdown - Fix mermaid diagram syntax in design.md (array notation) - Add CLAUDE.md for development guidance 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
79 lines
1.1 KiB
Go
79 lines
1.1 KiB
Go
package domain
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import (
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"fmt"
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"strings"
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)
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type Tag struct {
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name string
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}
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func NewTag(name string) (*Tag, error) {
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if name == "" {
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return nil, fmt.Errorf("tag name cannot be empty")
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}
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if !strings.HasPrefix(name, "#") {
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name = "#" + name
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}
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if !isValidTagName(name) {
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return nil, ErrInvalidTag
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}
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return &Tag{name: name}, nil
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}
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func (t *Tag) Name() string {
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return t.name
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}
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func (t *Tag) Parent() *Tag {
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if !t.IsNested() {
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return nil
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}
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lastSlash := strings.LastIndex(t.name, "/")
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if lastSlash == -1 {
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return nil
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}
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parentName := t.name[:lastSlash]
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parent, _ := NewTag(parentName)
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return parent
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}
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func (t *Tag) IsNested() bool {
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return strings.Contains(t.name, "/")
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}
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func (t *Tag) String() string {
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return t.name
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}
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func isValidTagName(name string) bool {
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if !strings.HasPrefix(name, "#") {
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return false
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}
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if len(name) <= 1 {
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return false
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}
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tagContent := name[1:]
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if strings.Contains(tagContent, " ") {
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return false
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}
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if strings.HasPrefix(tagContent, "/") || strings.HasSuffix(tagContent, "/") {
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return false
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}
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if strings.Contains(tagContent, "//") {
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return false
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}
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return true
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} |