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jekyll.go
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jekyll.go
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package staticgen
import (
"io/ioutil"
"log"
"net/http"
"os"
"os/exec"
"path/filepath"
"strings"
fb "github.com/filebrowser/filebrowser"
)
// Jekyll is the Jekyll static website generator.
type Jekyll struct {
// Website root
Root string `name:"Website Root"`
// Public folder
Public string `name:"Public Directory"`
// Jekyll executable path
Exe string `name:"Executable"`
// Jekyll arguments
Args []string `name:"Arguments"`
// Indicates if we should clean public before a new publish.
CleanPublic bool `name:"Clean Public"`
// previewPath is the temporary path for a preview
previewPath string
}
// Name is the plugin's name.
func (j Jekyll) Name() string {
return "jekyll"
}
// SettingsPath retrieves the correct settings path.
func (j Jekyll) SettingsPath() string {
return "/_config.yml"
}
// Hook is the pre-api handler.
func (j Jekyll) Hook(c *fb.Context, w http.ResponseWriter, r *http.Request) (int, error) {
return 0, nil
}
// Publish publishes a post.
func (j Jekyll) Publish(c *fb.Context, w http.ResponseWriter, r *http.Request) (int, error) {
filename := filepath.Join(c.User.Scope, r.URL.Path)
// We only run undraft command if it is a file.
if err := j.undraft(filename); err != nil {
return http.StatusInternalServerError, err
}
// Regenerates the file
j.run()
return 0, nil
}
// Preview handles the preview path.
func (j *Jekyll) Preview(c *fb.Context, w http.ResponseWriter, r *http.Request) (int, error) {
// Get a new temporary path if there is none.
if j.previewPath == "" {
path, err := ioutil.TempDir("", "")
if err != nil {
return http.StatusInternalServerError, err
}
j.previewPath = path
}
// Build the arguments to execute Hugo: change the base URL,
// build the drafts and update the destination.
args := j.Args
args = append(args, "--baseurl", c.RootURL()+"/preview/")
args = append(args, "--drafts")
args = append(args, "--destination", j.previewPath)
// Builds the preview.
if err := runCommand(j.Exe, args, j.Root); err != nil {
return http.StatusInternalServerError, err
}
// Serves the temporary path with the preview.
http.FileServer(http.Dir(j.previewPath)).ServeHTTP(w, r)
return 0, nil
}
func (j Jekyll) run() {
// If the CleanPublic option is enabled, clean it.
if j.CleanPublic {
os.RemoveAll(j.Public)
}
if err := runCommand(j.Exe, j.Args, j.Root); err != nil {
log.Println(err)
}
}
func (j Jekyll) undraft(file string) error {
if !strings.Contains(file, "_drafts") {
return nil
}
return os.Rename(file, strings.Replace(file, "_drafts", "_posts", 1))
}
// Setup sets up the plugin.
func (j *Jekyll) Setup() error {
var err error
if j.Exe, err = exec.LookPath("jekyll"); err != nil {
return err
}
if len(j.Args) == 0 {
j.Args = []string{"build"}
}
if j.Args[0] != "build" {
j.Args = append([]string{"build"}, j.Args...)
}
return nil
}