media

func DecodeBase64 ¶

func DecodeBase64(b64Data string) ([]byte, string, error)

DecodeBase64 decodes raw/base64 data or data URIs and returns bytes plus mime type.

func DecodeDataURI ¶

func DecodeDataURI(raw string) ([]byte, string, error)

DecodeDataURI decodes a data URI (both base64 and percent-encoded) and returns the decoded bytes plus the mime type extracted from the URI header. It returns an empty mime type string if no media type is specified in the URI.

func DownloadURL ¶

func DownloadURL(ctx context.Context, rawURL, fallbackMime string, maxBytes int64) ([]byte, string, error)

DownloadURL fetches a file from rawURL over HTTP(S) and returns the bytes, resolved MIME type, and any error. When maxBytes > 0 the download is rejected if the server-advertised Content-Length or the actual body exceeds that limit. fallbackMime is used when the server does not return a usable Content-Type header.

func FallbackFilenameForMIME ¶

func FallbackFilenameForMIME(mimeType string) string

func MessageTypeForMIME ¶

func MessageTypeForMIME(mimeType string) event.MessageType

func ParseDataURI ¶

func ParseDataURI(dataURI string) (string, string, error)

ParseDataURI parses a base64 data URI and returns raw base64 data and mime type.