filebrowser/editor.go

121 lines
2.5 KiB
Go

package filemanager
import (
"bytes"
"errors"
"net/http"
"path/filepath"
"strings"
"github.com/hacdias/filemanager/frontmatter"
"github.com/spf13/hugo/parser"
)
// Editor contains the information for the editor page
type Editor struct {
Class string
Mode string
Visual bool
Content string
FrontMatter struct {
Content *frontmatter.Content
Rune rune
}
}
// GetEditor gets the editor based on a Info struct
func GetEditor(r *http.Request, i *FileInfo) (*Editor, error) {
var err error
// Create a new editor variable and set the mode
e := new(Editor)
e.Mode = editorMode(i.Name)
e.Class = editorClass(e.Mode)
if e.Class == "frontmatter-only" || e.Class == "complete" {
e.Visual = true
}
if r.URL.Query().Get("visual") == "false" {
e.Class = "content-only"
}
hasRune := frontmatter.HasRune(i.content)
if e.Class == "frontmatter-only" && !hasRune {
e.FrontMatter.Rune, err = frontmatter.StringFormatToRune(e.Mode)
if err != nil {
goto Error
}
i.content = frontmatter.AppendRune(i.content, e.FrontMatter.Rune)
hasRune = true
}
if e.Class == "frontmatter-only" && hasRune {
e.FrontMatter.Content, _, err = frontmatter.Pretty(i.content)
if err != nil {
goto Error
}
}
if e.Class == "complete" && hasRune {
var page parser.Page
// Starts a new buffer and parses the file using Hugo's functions
buffer := bytes.NewBuffer(i.content)
page, err = parser.ReadFrom(buffer)
if err != nil {
goto Error
}
// Parses the page content and the frontmatter
e.Content = strings.TrimSpace(string(page.Content()))
e.FrontMatter.Rune = rune(i.content[0])
e.FrontMatter.Content, _, err = frontmatter.Pretty(page.FrontMatter())
}
if e.Class == "complete" && !hasRune {
err = errors.New("Complete but without rune")
}
Error:
if e.Class == "content-only" || err != nil {
e.Class = "content-only"
e.Content = i.StringifyContent()
}
return e, nil
}
func editorClass(mode string) string {
switch mode {
case "json", "toml", "yaml":
return "frontmatter-only"
case "markdown", "asciidoc", "rst":
return "complete"
}
return "content-only"
}
func editorMode(filename string) string {
mode := strings.TrimPrefix(filepath.Ext(filename), ".")
switch mode {
case "md", "markdown", "mdown", "mmark":
mode = "markdown"
case "asciidoc", "adoc", "ad":
mode = "asciidoc"
case "rst":
mode = "rst"
case "html", "htm":
mode = "html"
case "js":
mode = "javascript"
case "go":
mode = "golang"
}
return mode
}