"application/vnd.ms-excel", "xlm" => "application/vnd.ms-excel", "xla" => "application/vnd.ms-excel", "xlc" => "application/vnd.ms-excel", "xlt" => "application/vnd.ms-excel", "xlw" => "application/vnd.ms-excel", "pdf" => "application/pdf", "ppt" => "application/vnd.ms-powerpoint", "pps" => "application/vnd.ms-powerpoint", "pot" => "application/vnd.ms-powerpoint", "doc" => "application/msword", "dot" => "application/msword", "odc" => "application/vnd.oasis.opendocument.chart", "otc" => "application/vnd.oasis.opendocument.chart-template", "odf" => "application/vnd.oasis.opendocument.formula", "otf" => "application/vnd.oasis.opendocument.formula-template", "odg" => "application/vnd.oasis.opendocument.graphics", "otg" => "application/vnd.oasis.opendocument.graphics-template", "odi" => "application/vnd.oasis.opendocument.image", "oti" => "application/vnd.oasis.opendocument.image-template", "odp" => "application/vnd.oasis.opendocument.presentation", "otp" => "application/vnd.oasis.opendocument.presentation-template", "ods" => "application/vnd.oasis.opendocument.spreadsheet", "ots" => "application/vnd.oasis.opendocument.spreadsheet-template", "odt" => "application/vnd.oasis.opendocument.text", "otm" => "application/vnd.oasis.opendocument.text-master", "ott" => "application/vnd.oasis.opendocument.text-template", "oth" => "application/vnd.oasis.opendocument.text-web", "docm" => "application/vnd.ms-word.document.macroEnabled.12", "docx" => "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "dotm" => "application/vnd.ms-word.template.macroEnabled.12", "dotx" => "application/vnd.openxmlformats-officedocument.wordprocessingml.template", "ppsm" => "application/vnd.ms-powerpoint.slideshow.macroEnabled.12", "ppsx" => "application/vnd.openxmlformats-officedocument.presentationml.slideshow", "pptm" => "application/vnd.ms-powerpoint.presentation.macroEnabled.12", "pptx" => "application/vnd.openxmlformats-officedocument.presentationml.presentation", "xlsb" => "application/vnd.ms-excel.sheet.binary.macroEnabled.12", "xlsm" => "application/vnd.ms-excel.sheet.macroEnabled.12", "xlsx" => "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "xps" => "application/vnd.ms-xpsdocument", "rar" => "application/x-rar-compressed", "7z" => "application/x-7z-compressed", "s7z" => "application/x-7z-compressed", "vcf" => "text/vcard", "ics" => "text/calendar", ];