package vault
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import (
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"bufio"
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"os"
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"regexp"
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"strings"
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"gopkg.in/yaml.v3"
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)
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// FileMeta 文件元数据
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type FileMeta struct {
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Path string // 相对路径
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Title string // frontmatter title
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Section string // 所属板块
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Tags []string // frontmatter tags
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Entities []string // frontmatter entities
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Wikilinks []string // 正文中的 [[xxx]] 链接
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Content string // 纯文本内容（去 frontmatter）
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}
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// Frontmatter YAML 结构
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type Frontmatter struct {
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Title string `yaml:"title"`
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Tags []string `yaml:"tags"`
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Entities []string `yaml:"entities"`
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Aliases []string `yaml:"aliases"`
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}
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var wikilinkRe = regexp.MustCompile(`\[\[([^\]]+)\]\]`)
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// ParseFile 解析单个 markdown 文件
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func ParseFile(absPath, relPath string) (*FileMeta, error) {
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f, err := os.Open(absPath)
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if err != nil {
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return nil, err
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}
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defer f.Close()
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meta := &FileMeta{
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Path: relPath,
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Section: GetSection(relPath),
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}
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scanner := bufio.NewScanner(f)
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inFrontmatter := false
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fmLines := []string{}
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contentLines := []string{}
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lineNum := 0
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for scanner.Scan() {
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line := scanner.Text()
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lineNum++
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if lineNum == 1 && line == "---" {
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inFrontmatter = true
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continue
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}
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if inFrontmatter && line == "---" {
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inFrontmatter = false
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continue
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}
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if inFrontmatter {
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fmLines = append(fmLines, line)
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} else {
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contentLines = append(contentLines, line)
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}
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}
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// 解析 frontmatter
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if len(fmLines) > 0 {
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var fm Frontmatter
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if err := yaml.Unmarshal([]byte(strings.Join(fmLines, "\n")), &fm); err == nil {
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meta.Title = fm.Title
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meta.Tags = fm.Tags
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meta.Entities = fm.Entities
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}
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}
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// 提取 wikilinks 和内容
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content := strings.Join(contentLines, "\n")
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meta.Content = content
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matches := wikilinkRe.FindAllStringSubmatch(content, -1)
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seen := make(map[string]bool)
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for _, m := range matches {
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link := m[1]
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if !seen[link] {
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meta.Wikilinks = append(meta.Wikilinks, link)
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seen[link] = true
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}
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}
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return meta, nil
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}
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