148 lines
2.4 KiB
Go
148 lines
2.4 KiB
Go
package connector
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import (
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"bytes"
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"io"
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"net/http"
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"os"
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"path/filepath"
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log "github.com/sirupsen/logrus"
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)
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type FileMediaObject struct {
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Path string
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}
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func (m *FileMediaObject) Filename() string {
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return filepath.Base(m.Path)
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}
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func (m *FileMediaObject) Size() int64 {
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fi, err := os.Stat(m.Path)
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if err != nil {
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log.Fatal(err)
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}
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return fi.Size()
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}
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func (m *FileMediaObject) Mimetype() string {
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f, err := os.Open(m.Path)
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if err != nil {
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log.Fatal(err)
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}
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defer f.Close()
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buffer := make([]byte, 512)
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_, err = f.Read(buffer)
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if err != nil {
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log.Fatal(err)
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}
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return http.DetectContentType(buffer)
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}
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func (m *FileMediaObject) ImageSize() *ImageSize {
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// TODO but not really usefull
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return nil
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}
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func (m *FileMediaObject) Read() (io.ReadCloser, error) {
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return os.Open(m.Path)
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}
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func (m *FileMediaObject) URL() string {
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return ""
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}
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// ----
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type BlobMediaObject struct {
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ObjectFilename string
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ObjectMimetype string
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ObjectImageSize *ImageSize
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ObjectData []byte
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}
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func (m *BlobMediaObject) Filename() string {
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return m.ObjectFilename
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}
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func (m *BlobMediaObject) Size() int64 {
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return int64(len(m.ObjectData))
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}
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func (m *BlobMediaObject) Mimetype() string {
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return m.ObjectMimetype
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}
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func (m *BlobMediaObject) ImageSize() *ImageSize {
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return m.ObjectImageSize
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}
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func (m *BlobMediaObject) Read() (io.ReadCloser, error) {
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return nullCloseReader{bytes.NewBuffer(m.ObjectData)}, nil
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}
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func (m *BlobMediaObject) URL() string {
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return ""
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}
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type nullCloseReader struct {
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io.Reader
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}
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func (ncr nullCloseReader) Close() error {
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return nil
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}
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// ----
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type LazyBlobMediaObject struct {
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ObjectFilename string
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ObjectMimetype string
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ObjectImageSize *ImageSize
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ObjectData []byte
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GetFn func(o *LazyBlobMediaObject) error
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}
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func (m *LazyBlobMediaObject) Filename() string {
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return m.ObjectFilename
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}
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func (m *LazyBlobMediaObject) Size() int64 {
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if m.ObjectData == nil {
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m.GetFn(m)
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}
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return int64(len(m.ObjectData))
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}
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func (m *LazyBlobMediaObject) Mimetype() string {
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if m.ObjectData == nil {
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m.GetFn(m)
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}
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return m.ObjectMimetype
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}
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func (m *LazyBlobMediaObject) ImageSize() *ImageSize {
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if m.ObjectData == nil {
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m.GetFn(m)
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}
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return m.ObjectImageSize
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}
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func (m *LazyBlobMediaObject) Read() (io.ReadCloser, error) {
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if m.ObjectData == nil {
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err := m.GetFn(m)
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if err != nil {
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return nil, err
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}
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}
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return nullCloseReader{bytes.NewBuffer(m.ObjectData)}, nil
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}
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func (m *LazyBlobMediaObject) URL() string {
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return ""
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}
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