Sergey Solodyagin
44 lines
1.2 KiB
Go
44 lines
1.2 KiB
Go
package static
|
|
|
|
import (
|
|
"fmt"
|
|
"net/http"
|
|
"strings"
|
|
|
|
"git.company.lan/gopkg/gin"
|
|
)
|
|
|
|
type Override func(*gin.Context) bool
|
|
|
|
type ServeFileSystem interface {
|
|
http.FileSystem
|
|
Exists(prefix string, path string) bool
|
|
Override(*gin.Context) bool
|
|
}
|
|
|
|
func ServeRoot(urlPrefix, root string) gin.HandlerFunc {
|
|
return Serve(urlPrefix, LocalFile(root, false))
|
|
}
|
|
|
|
// Serve returns a middleware handler that serves static files in the given directory.
|
|
func Serve(urlPrefix string, fs ServeFileSystem) gin.HandlerFunc {
|
|
return ServeCached(urlPrefix, fs, 0)
|
|
}
|
|
|
|
// ServeCached returns a middleware handler that similar as Serve but with the Cache-Control Header set as passed in the cacheAge parameter
|
|
func ServeCached(urlPrefix string, fs ServeFileSystem, cacheAge uint) gin.HandlerFunc {
|
|
fileserver := http.FileServer(fs)
|
|
if urlPrefix != "" {
|
|
fileserver = http.StripPrefix(urlPrefix, fileserver)
|
|
}
|
|
return func(c *gin.Context) {
|
|
if strings.HasPrefix(c.Request.URL.Path, urlPrefix) && fs.Exists(urlPrefix, c.Request.URL.Path) && !fs.Override(c) {
|
|
if cacheAge != 0 {
|
|
c.Writer.Header().Add("Cache-Control", fmt.Sprintf("max-age=%d", cacheAge))
|
|
}
|
|
fileserver.ServeHTTP(c.Writer, c.Request)
|
|
c.Abort()
|
|
}
|
|
}
|
|
}
|