43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
package static
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import (
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"fmt"
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"net/http"
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"git.company.lan/gopkg/gin"
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)
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type Override func(*gin.Context) bool
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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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Override(*gin.Context) bool
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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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// Serve 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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return ServeCached(urlPrefix, fs, 0)
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}
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// ServeCached returns a middleware handler that similar as Serve but with the Cache-Control Header set as passed in the cacheAge parameter
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func ServeCached(urlPrefix string, fs ServeFileSystem, cacheAge uint) 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) && !fs.Override(c) {
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if cacheAge != 0 {
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c.Writer.Header().Add("Cache-Control", fmt.Sprintf("max-age=%d", cacheAge))
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}
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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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