74 lines
1.7 KiB
Go
74 lines
1.7 KiB
Go
package fs
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import (
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"path/filepath"
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"strings"
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"github.com/gabriel-vasile/mimetype"
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)
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const (
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MimeTypeUnknown = ""
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MimeTypeJPEG = "image/jpeg"
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MimeTypeJPEGXL = "image/jxl"
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MimeTypePNG = "image/png"
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MimeTypeAPNG = "image/vnd.mozilla.apng"
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MimeTypeGIF = "image/gif"
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MimeTypeBMP = "image/bmp"
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MimeTypeTIFF = "image/tiff"
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MimeTypeDNG = "image/dng"
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MimeTypeAVIF = "image/avif"
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MimeTypeAVIFS = "image/avif-sequence"
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MimeTypeHEIC = "image/heic"
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MimeTypeHEICS = "image/heic-sequence"
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MimeTypeWebP = "image/webp"
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MimeTypeMP4 = "video/mp4"
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MimeTypeMOV = "video/quicktime"
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MimeTypeSVG = "image/svg+xml"
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MimeTypeAI = "application/vnd.adobe.illustrator"
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MimeTypePS = "application/ps"
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MimeTypeEPS = "image/eps"
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MimeTypeXML = "text/xml"
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MimeTypeJSON = "application/json"
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)
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// MimeType returns the mime type of a file, or an empty string if it could not be detected.
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func MimeType(filename string) (mimeType string) {
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if filename == "" {
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return MimeTypeUnknown
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}
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// Workaround for types that cannot be reliably detected.
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switch Extensions[strings.ToLower(filepath.Ext(filename))] {
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case ImageDNG:
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return MimeTypeDNG
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case ImageAVIF:
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return MimeTypeAVIF
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case ImageAVIFS:
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return MimeTypeAVIFS
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case ImageHEIC:
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return MimeTypeHEIC
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case ImageHEICS:
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return MimeTypeHEICS
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case VideoMP4:
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return MimeTypeMP4
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case VideoMOV:
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return MimeTypeMOV
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case VectorSVG:
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return MimeTypeSVG
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case VectorAI:
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return MimeTypeAI
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case VectorPS:
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return MimeTypePS
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case VectorEPS:
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return MimeTypeEPS
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}
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if t, err := mimetype.DetectFile(filename); err != nil {
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return MimeTypeUnknown
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} else {
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mimeType, _, _ = strings.Cut(t.String(), ";")
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}
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return mimeType
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}
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