116 lines
2.3 KiB
Go
116 lines
2.3 KiB
Go
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/*
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* Copyright (c) 2013-2021 Utkan Güngördü <utkan@freeconsole.org>
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* Copyright (c) 2021-2022 Piotr Grabowski
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package archive
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import (
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"errors"
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"os"
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"path/filepath"
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"sort"
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"github.com/fauu/gomicsv/pixbuf"
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"github.com/gotk3/gotk3/gdk"
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)
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type Dir struct {
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filenames filenames
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name string
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path string
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}
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/* Reads filenames from a directory, and sorts them */
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func NewDir(path string) (*Dir, error) {
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var err error
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ar := new(Dir)
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ar.name = filepath.Base(path)
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ar.path = path
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dir, err := os.Open(path)
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if err != nil {
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return nil, err
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}
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defer dir.Close()
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filenames, err := dir.Readdirnames(-1)
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if err != nil {
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return nil, err
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}
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ar.filenames = make([]string, 0, len(filenames))
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for _, name := range filenames {
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if !extensionMatches(name, imageExtensions) {
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continue
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}
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ar.filenames = append(ar.filenames, name)
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}
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if len(ar.filenames) == 0 {
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return nil, errors.New(ar.name + ": no images in the directory")
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}
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sort.Sort(ar.filenames)
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return ar, nil
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}
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func (ar *Dir) checkbounds(i int) error {
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if i < 0 || i >= len(ar.filenames) {
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return ErrBounds
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}
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return nil
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}
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func (ar *Dir) Load(i int, autorotate bool, _nPreload int) (*gdk.Pixbuf, error) {
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if err := ar.checkbounds(i); err != nil {
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return nil, err
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}
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path := filepath.Join(ar.path, ar.filenames[i])
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f, err := os.Open(path)
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if err != nil {
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return nil, err
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}
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defer f.Close()
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return pixbuf.Load(f, autorotate)
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}
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func (ar *Dir) Name(i int) (string, error) {
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if err := ar.checkbounds(i); err != nil {
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return "", err
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}
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return ar.filenames[i], nil
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}
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func (ar *Dir) Kind() Kind {
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return Unpacked
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}
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func (ar *Dir) Len() *int {
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l := len(ar.filenames)
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return &l
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}
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func (ar *Dir) Close() error {
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return nil
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}
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