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filetype.go
40 lines (35 loc) · 1.24 KB
/
filetype.go
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// Copyright © 2018 Christoph Petrausch
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package extraction
import (
"os"
"github.com/h2non/filetype"
"github.com/pkg/errors"
)
// IsVideoOrImage return true if the given file is a video or an image
func IsVideoOrImage(fname string) (bool, error) {
// Open a file descriptor
file, err := os.Open(fname)
if err != nil {
return false, errors.Wrap(err, "could not open file to determine file type")
}
defer file.Close()
// We only have to pass the file header = first 261 bytes
head := make([]byte, 261)
_, err = file.Read(head)
if err != nil {
return false, errors.Wrap(err, "could not read file header to determine file type")
}
return filetype.IsImage(head) || filetype.IsVideo(head), nil
}