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text.go
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text.go
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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/>.
*/
// Text thumbnail generator
package text
import (
"fmt"
. "pkg.deepin.io/dde/api/thumbnails/loader"
"pkg.deepin.io/lib/mime"
dutils "pkg.deepin.io/lib/utils"
)
const (
TextTypeText = "text/plain"
TextTypeC = "text/x-c"
TextTypeCpp = "text/x-cpp"
TextTypeGo = "text/x-go"
)
func init() {
for _, ty := range SupportedTypes() {
Register(ty, genTextThumbnail)
}
}
func SupportedTypes() []string {
return []string{
TextTypeText,
TextTypeC,
TextTypeCpp,
TextTypeGo,
}
}
func GenThumbnail(src string, width, height int, force bool) (string, error) {
if width <= 0 || height <= 0 {
return "", fmt.Errorf("Invalid width or height")
}
ty, err := mime.Query(src)
if err != nil {
return "", err
}
if !IsStrInList(ty, SupportedTypes()) {
return "", fmt.Errorf("Not supported type: %v", ty)
}
return genTextThumbnail(src, "", width, height, force)
}
func genTextThumbnail(src, bg string, width, height int, force bool) (string, error) {
dest, err := GetThumbnailDest(src, width, height)
if err != nil {
return "", err
}
if !force && dutils.IsFileExist(dest) {
return dest, nil
}
return doGenThumbnail(dutils.DecodeURI(src), dest, width, height)
}