mirror of
https://github.com/prymitive/karma
synced 2026-05-05 03:16:51 +00:00
102 lines
2.2 KiB
Go
102 lines
2.2 KiB
Go
package main
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import (
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"errors"
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"fmt"
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"html/template"
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"net/http"
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"os"
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"strings"
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"time"
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assetfs "github.com/elazarl/go-bindata-assetfs"
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"github.com/gin-gonic/gin"
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log "github.com/sirupsen/logrus"
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)
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type binaryFileSystem struct {
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fs http.FileSystem
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}
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func (b *binaryFileSystem) Open(name string) (http.File, error) {
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return b.fs.Open(name)
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}
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func (b *binaryFileSystem) Exists(prefix string, filepath string) bool {
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if p := strings.TrimPrefix(filepath, prefix); len(p) < len(filepath) {
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if _, err := b.fs.Open(p); err != nil {
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// file does not exist
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return false
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}
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// file exist
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return true
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}
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// file path doesn't start with fs prefix, so this file isn't stored here
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return false
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}
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func newBinaryFileSystem(root string) *binaryFileSystem {
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fs := &assetfs.AssetFS{
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Asset: Asset,
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// Don't render directory index, return 404 for /static/ requests)
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AssetDir: func(path string) ([]string, error) {
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return nil, errors.New("not found")
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},
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Prefix: root,
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}
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return &binaryFileSystem{fs}
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}
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// load a template from binary asset resource
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func loadTemplate(t *template.Template, path string) *template.Template {
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templateContent, err := Asset(path)
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if err != nil {
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log.Fatal(err)
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}
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var tmpl *template.Template
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if t == nil {
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// if template wasn't yet initialized do it here
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t = template.New(path)
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}
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if path == t.Name() {
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tmpl = t
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} else {
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// if we already have an instance of template.Template then
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// add a new file to it
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tmpl = t.New(path)
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}
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_, err = tmpl.Parse(string(templateContent))
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if err != nil {
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log.Fatal(err)
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return nil
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}
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return t
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}
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func serveFileOr404(path string, contentType string, c *gin.Context) {
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c.Header("Cache-Control", "no-cache, no-store, must-revalidate")
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if path == "" {
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c.Data(200, contentType, nil)
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return
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}
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if _, err := os.Stat(path); os.IsNotExist(err) {
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c.Data(404, contentType, []byte(fmt.Sprintf("%s not found", path)))
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return
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}
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c.File(path)
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}
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func staticHeaders(prefix string) gin.HandlerFunc {
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return func(c *gin.Context) {
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if strings.HasPrefix(c.Request.URL.Path, prefix) {
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c.Header("Cache-Control", "public, max-age=31536000")
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expiresTime := time.Now().AddDate(0, 0, 365).Format(http.TimeFormat)
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c.Header("Expires", expiresTime)
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}
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}
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}
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