在Golang中检查HEIC文件格式

Question

Is there a way to check for HEIC or HEIF file format in Go? For images, I was previously using _, format, err := image.DecodeConfig(bytes.NewReader(file)) to check if a file was a jpeg or png. When checking against a HEIC file, it's completely empty.

Answer 1

if you are in Linux or Mac then you can use the mdls command to get the file type.
example :

$ mdls camel.heic

kMDItemBitsPerSample               = 32
kMDItemColorSpace                  = "RGB"
kMDItemContentCreationDate         = 2018-10-03 11:36:30 +0000
kMDItemContentCreationDate_Ranking = 2018-10-03 00:00:00 +0000
kMDItemContentModificationDate     = 2018-10-03 11:36:31 +0000
kMDItemContentType                 = "public.heic"
...

you can run the following command within golang and get the data for kMDItemContentType

out, err := exec.Command("mdls", "camel.heic").Output()
# parse data from `out`