RCurl (version 1.98-1.16)

guessMIMEType: Infer the MIME type from a file name

Description

This function returns the MIME type, i.e. part of the value used in the Content-Type for an HTTP request/response or in email to identify the nature of the content. This is a string such as "text/plain" or "text/xml" or "image/png".

The function consults an R object constructed by reading a Web site of known MIME types (not necessarily all) and matching the extension of the file name to the names of that table.

Usage

guessMIMEType(name, default = NA)

Value

A character vector giving the MIME types for each element of name.

Arguments

name

character vector of file names

default

the value to use if no MIME type is found in the table for the given file name/extension.

Author

Duncan Temple Lang

References

The table of MIME types and extensions was programmatically extracted from http://www.webmaster-toolkit.com/mime-types.shtml with tbls = readHTMLTable("http://www.webmaster-toolkit.com/mime-types.shtml") tmp = tbls[[1]][-1,] mimeTypeExtensions = structure(as.character(tmp[[2]]), names = gsub("^\.", "", tmp[[1]])) save(mimeTypeExtensions, file = "data/mimeTypeExtensions.rda") The IANA list is not as convenient to programmatically compile.

See Also

Uploading file.

Examples

 guessMIMEType(c("foo.txt", "foo.png", "foo.jpeg", "foo.Z", "foo.R"))

 guessMIMEType("foo.bob")
 guessMIMEType("foo.bob", "application/x-binary")