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/*
* Copyright (C) 2014 ~ 2018 Deepin Technology Co., Ltd.
*
* Author: jouyouyun <jouyouwen717@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package mime
import (
"fmt"
"path"
dutils "pkg.deepin.io/lib/utils"
)
const (
mimeTypeXCursor = "image/x-xcursor"
)
func queryThemeMime(file string) (string, error) {
gtk, _ := isGtkTheme(file)
if gtk {
return MimeTypeGtk, nil
}
icon, _ := isIconTheme(file)
if icon {
return MimeTypeIcon, nil
}
cursor, _ := isCursorTheme(file)
if cursor {
return MimeTypeCursor, nil
}
return "", fmt.Errorf("The mime of '%s' not supported", file)
}
// file: ex "/usr/share/themes/Deepin/index.theme"
func isGtkTheme(file string) (bool, error) {
var conditions = []string{
"gtk-2.0",
"gtk-3.0",
"metacity-1",
}
dir := path.Dir(file)
return isFilesInDir(conditions, dir)
}
// file: ex "/usr/share/icons/Deepin/index.theme"
func isIconTheme(file string) (bool, error) {
kfile, err := dutils.NewKeyFileFromFile(file)
if err != nil {
return false, err
}
defer kfile.Free()
_, err = kfile.GetString("Icon Theme", "Directories")
if err != nil {
return false, err
}
return true, nil
}
// file: ex "/usr/share/icons/Deepin/index.theme"
func isCursorTheme(file string) (bool, error) {
parent := path.Dir(file)
tmp := path.Join(parent, "cursors", "left_ptr")
mime, err := doQueryFile(tmp)
if err != nil {
return false, err
}
if mime != mimeTypeXCursor {
return false, fmt.Errorf("Invalid xcursor file '%s'", tmp)
}
return true, nil
}
func isFilesInDir(files []string, dir string) (bool, error) {
if !dutils.IsDir(dir) {
return false, fmt.Errorf("'%s' not a dir", dir)
}
for _, file := range files {
tmp := path.Join(dir, file)
if !dutils.IsFileExist(tmp) {
return false, fmt.Errorf("Not found the file: '%s'", tmp)
}
}
return true, nil
}
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