71 lines
1.4 KiB
Go
71 lines
1.4 KiB
Go
package static
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import (
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"net/http"
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"os"
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"path"
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"strings"
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"github.com/gin-gonic/gin"
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)
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const INDEX = "index.html"
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type ServeFileSystem interface {
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http.FileSystem
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Exists(prefix string, path string) bool
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}
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type localFileSystem struct {
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http.FileSystem
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root string
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indexes bool
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}
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func LocalFile(root string, indexes bool) *localFileSystem {
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return &localFileSystem{
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FileSystem: gin.Dir(root, indexes),
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root: root,
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indexes: indexes,
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}
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}
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func (l *localFileSystem) Exists(prefix string, filepath string) bool {
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if p := strings.TrimPrefix(filepath, prefix); len(p) < len(filepath) {
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name := path.Join(l.root, p)
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stats, err := os.Stat(name)
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if err != nil {
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return false
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}
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if stats.IsDir() {
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if !l.indexes {
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index := path.Join(name, INDEX)
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_, err := os.Stat(index)
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if err != nil {
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return false
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}
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}
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}
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return true
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}
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return false
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}
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func ServeRoot(urlPrefix, root string) gin.HandlerFunc {
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return Serve(urlPrefix, LocalFile(root, false))
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}
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// Static returns a middleware handler that serves static files in the given directory.
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func Serve(urlPrefix string, fs ServeFileSystem) gin.HandlerFunc {
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fileserver := http.FileServer(fs)
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if urlPrefix != "" {
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fileserver = http.StripPrefix(urlPrefix, fileserver)
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}
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return func(c *gin.Context) {
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if fs.Exists(urlPrefix, c.Request.URL.Path) {
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fileserver.ServeHTTP(c.Writer, c.Request)
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c.Abort()
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}
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}
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}
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