fix(dev): load runtime metadata without frontend build artifacts
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c705d1ab33
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@@ -5,7 +5,9 @@
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package web
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import (
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"bytes"
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"embed"
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"fmt"
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"io/fs"
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)
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@@ -19,3 +21,19 @@ func Dist() fs.FS {
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}
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return sub
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}
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// BuildVersion 与页面入口使用同一构建标识,生产产物缺失时明确失败。
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func BuildVersion() (string, error) {
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html, err := fs.ReadFile(Dist(), "index.html")
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if err != nil {
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return "", err
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}
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marker := []byte(`<meta name="rawmark-version" content="`)
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if start := bytes.Index(html, marker); start >= 0 {
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rest := html[start+len(marker):]
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if end := bytes.IndexByte(rest, '"'); end > 0 {
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return string(rest[:end]), nil
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}
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}
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return "", fmt.Errorf("缺少构建版本")
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}
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@@ -5,6 +5,8 @@ package web
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import (
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"io/fs"
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"os"
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"path/filepath"
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"regexp"
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)
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// Dist 在开发模式下直接读取磁盘上的 web/dist(未构建时为空,页面由 Vite 开发服务器提供),
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@@ -12,3 +14,31 @@ import (
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func Dist() fs.FS {
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return os.DirFS("web/dist")
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}
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// 开发环境由 Vite 提供页面,不依赖 web/dist 中可能过期的构建产物。
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func BuildVersion() (string, error) { return "dev", nil }
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// FontStorage 按 Vite 构建使用的 fonts.css 统计可选字体,不包含 Maple 与 KaTeX。
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func FontStorage() (int64, error) {
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root := filepath.Join("web", "src", "themes")
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css, err := os.ReadFile(filepath.Join(root, "fonts.css"))
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if err != nil {
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return 0, err
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}
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paths := regexp.MustCompile(`url\(['"]?(\.?/?fonts/[^)'"]+)`).FindAllSubmatch(css, -1)
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seen := map[string]bool{}
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var size int64
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for _, match := range paths {
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name := string(match[1])
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if seen[name] {
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continue
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}
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seen[name] = true
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info, err := os.Stat(filepath.Join(root, name))
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if err != nil {
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return 0, err
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}
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size += info.Size()
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}
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return size, nil
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}
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@@ -0,0 +1,43 @@
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//go:build dev
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package web
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import (
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"os"
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"path/filepath"
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"testing"
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)
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func TestDevelopmentMetadataDoesNotRequireBuild(t *testing.T) {
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root := t.TempDir()
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t.Chdir(root)
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themes := filepath.Join("web", "src", "themes")
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if err := os.MkdirAll(filepath.Join(themes, "fonts"), 0700); err != nil {
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t.Fatal(err)
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}
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css := `@font-face { src: url(./fonts/a.woff2); }
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@font-face { src: url('./fonts/a.woff2'); }
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@font-face { src: url("./fonts/b.woff2"); }`
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if err := os.WriteFile(filepath.Join(themes, "fonts.css"), []byte(css), 0600); err != nil {
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t.Fatal(err)
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}
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for name, data := range map[string]string{"a.woff2": "abc", "b.woff2": "defgh"} {
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if err := os.WriteFile(filepath.Join(themes, "fonts", name), []byte(data), 0600); err != nil {
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t.Fatal(err)
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}
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}
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version, err := BuildVersion()
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if err != nil || version != "dev" {
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t.Fatalf("开发版本不应依赖构建产物:%q,%v", version, err)
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}
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size, err := FontStorage()
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if err != nil || size != 8 {
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t.Fatalf("开发字体统计应按源文件去重:%d,%v", size, err)
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}
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if err = os.Remove(filepath.Join(themes, "fonts", "b.woff2")); err != nil {
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t.Fatal(err)
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}
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if _, err = FontStorage(); err == nil {
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t.Fatal("字体源文件缺失时不得返回零值伪装成功")
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}
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}
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@@ -1,3 +1,5 @@
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//go:build !dev
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package web
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import (
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