Contains the Concourse pipeline definition for building a line-server container
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package main
import (
"net/http"
"os"
"path"
"strings"
"github.com/flosch/pongo2"
"github.com/rakyll/magicmime"
"github.com/zenazn/goji/web"
)
var imageTpl = pongo2.Must(pongo2.FromCache("templates/display/image.html"))
var audioTpl = pongo2.Must(pongo2.FromCache("templates/display/audio.html"))
var videoTpl = pongo2.Must(pongo2.FromCache("templates/display/video.html"))
var fileTpl = pongo2.Must(pongo2.FromCache("templates/display/file.html"))
var pdfTpl = pongo2.Must(pongo2.FromCache("templates/display/pdf.html"))
func fileDisplayHandler(c web.C, w http.ResponseWriter, r *http.Request) {
fileName := c.URLParams["name"]
filePath := path.Join(Config.filesDir, fileName)
fileInfo, err := os.Stat(filePath)
if os.IsNotExist(err) {
notFoundHandler(c, w, r)
return
}
// file expiry checking
if err := magicmime.Open(magicmime.MAGIC_MIME_TYPE |
magicmime.MAGIC_SYMLINK |
magicmime.MAGIC_ERROR); err != nil {
oopsHandler(c, w, r)
}
defer magicmime.Close()
mimetype, err := magicmime.TypeByFile(filePath)
if err != nil {
oopsHandler(c, w, r)
}
var tpl *pongo2.Template
if strings.HasPrefix(mimetype, "image/") {
tpl = imageTpl
} else if strings.HasPrefix(mimetype, "video/") {
tpl = videoTpl
} else if strings.HasPrefix(mimetype, "audio/") {
tpl = audioTpl
} else if mimetype == "application/pdf" {
tpl = pdfTpl
} else {
tpl = fileTpl
}
err = tpl.ExecuteWriter(pongo2.Context{
"mime": mimetype,
"filename": fileName,
"size": fileInfo.Size(),
}, w)
if err != nil {
oopsHandler(c, w, r)
}
}