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Diffstat (limited to 'modules/luci-base/luasrc/http/protocol/mime.lua')
| -rw-r--r-- | modules/luci-base/luasrc/http/protocol/mime.lua | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/modules/luci-base/luasrc/http/protocol/mime.lua b/modules/luci-base/luasrc/http/protocol/mime.lua new file mode 100644 index 0000000000..c878160664 --- /dev/null +++ b/modules/luci-base/luasrc/http/protocol/mime.lua @@ -0,0 +1,99 @@ +--[[ + +HTTP protocol implementation for LuCI - mime handling +(c) 2008 Freifunk Leipzig / Jo-Philipp Wich <xm@leipzig.freifunk.net> + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +$Id$ + +]]-- + +--- LuCI http protocol implementation - mime helper class. +-- This class provides functions to guess mime types from file extensions and +-- vice versa. +module("luci.http.protocol.mime", package.seeall) + +require("luci.util") + +--- MIME mapping table containg extension - mimetype relations. +-- @class table +MIME_TYPES = { + ["txt"] = "text/plain"; + ["js"] = "text/javascript"; + ["css"] = "text/css"; + ["htm"] = "text/html"; + ["html"] = "text/html"; + ["patch"] = "text/x-patch"; + ["c"] = "text/x-csrc"; + ["h"] = "text/x-chdr"; + ["o"] = "text/x-object"; + ["ko"] = "text/x-object"; + + ["bmp"] = "image/bmp"; + ["gif"] = "image/gif"; + ["png"] = "image/png"; + ["jpg"] = "image/jpeg"; + ["jpeg"] = "image/jpeg"; + ["svg"] = "image/svg+xml"; + + ["zip"] = "application/zip"; + ["pdf"] = "application/pdf"; + ["xml"] = "application/xml"; + ["xsl"] = "application/xml"; + ["doc"] = "application/msword"; + ["ppt"] = "application/vnd.ms-powerpoint"; + ["xls"] = "application/vnd.ms-excel"; + ["odt"] = "application/vnd.oasis.opendocument.text"; + ["odp"] = "application/vnd.oasis.opendocument.presentation"; + ["pl"] = "application/x-perl"; + ["sh"] = "application/x-shellscript"; + ["php"] = "application/x-php"; + ["deb"] = "application/x-deb"; + ["iso"] = "application/x-cd-image"; + ["tgz"] = "application/x-compressed-tar"; + + ["mp3"] = "audio/mpeg"; + ["ogg"] = "audio/x-vorbis+ogg"; + ["wav"] = "audio/x-wav"; + + ["mpg"] = "video/mpeg"; + ["mpeg"] = "video/mpeg"; + ["avi"] = "video/x-msvideo"; +} + +--- Extract extension from a filename and return corresponding mime-type or +-- "application/octet-stream" if the extension is unknown. +-- @param filename The filename for which the mime type is guessed +-- @return String containign the determined mime type +function to_mime(filename) + if type(filename) == "string" then + local ext = filename:match("[^%.]+$") + + if ext and MIME_TYPES[ext:lower()] then + return MIME_TYPES[ext:lower()] + end + end + + return "application/octet-stream" +end + +--- Return corresponding extension for a given mime type or nil if the +-- given mime-type is unknown. +-- @param mimetype The mimetype to retrieve the extension from +-- @return String with the extension or nil for unknown type +function to_ext(mimetype) + if type(mimetype) == "string" then + for ext, type in luci.util.kspairs( MIME_TYPES ) do + if type == mimetype then + return ext + end + end + end + + return nil +end |