Function bucket_input_mime 

pub fn bucket_input_mime(header_value: Option<&HeaderValue>) -> &'static str

Returns the bounded input_mime_type label value for a Content-Type header.

This function is intentionally MORE permissive than validate_content_type: it returns the matching label for any text/markdown, text/html, or DOCX value regardless of charset or other parameters, because the label answers “what did the client try to send?” rather than “is it valid?”.

Label values

• crate::metrics::INPUT_MIME_NONE — header absent
• crate::metrics::INPUT_MIME_MARKDOWN — text/markdown (any params)
• crate::metrics::INPUT_MIME_HTML — text/html (any params)
• crate::metrics::INPUT_MIME_DOCX — application/vnd.openxmlformats-officedocument.wordprocessingml.document (any params)
• crate::metrics::INPUT_MIME_UNSUPPORTED — anything else