Class: Aspera::Preview::FileTypes

Inherits:
Object
  • Object
show all
Defined in:
lib/aspera/preview/file_types.rb

Constant Summary collapse

CONVERSION_TYPES =

values for conversion_type : input format

[
  :image,
  :office,
  :pdf,
  :plaintext,
  :video
]
SUPPORTED_MIME_TYPES =

define how files are processed based on mime type

{
'application/json' => :plaintext,
'application/mac-binhex40' => :office,
'application/msword' => :office,
'application/pdf' => :pdf,
'application/postscript' => :image,
'application/rtf' => :office,
'application/vnd.3gpp.pic-bw-small' => :image,
'application/vnd.hp-hpgl' => :image,
'application/vnd.hp-pcl' => :image,
'application/vnd.lotus-wordpro' => :office,
'application/vnd.mobius.msl' => :image,
'application/vnd.mophun.certificate' => :image,
'application/vnd.ms-excel' => :office,
'application/vnd.ms-excel.sheet.binary.macroenabled.12' => :office,
'application/vnd.ms-excel.sheet.macroenabled.12' => :office,
'application/vnd.ms-excel.template.macroenabled.12' => :office,
'application/vnd.ms-powerpoint' => :office,
'application/vnd.ms-powerpoint.presentation.macroenabled.12' => :office,
'application/vnd.ms-powerpoint.template.macroenabled.12' => :office,
'application/vnd.ms-word.document.macroenabled.12' => :office,
'application/vnd.ms-word.template.macroenabled.12' => :office,
'application/vnd.ms-works' => :office,
'application/vnd.oasis.opendocument.chart' => :office,
'application/vnd.oasis.opendocument.formula' => :office,
'application/vnd.oasis.opendocument.graphics' => :office,
'application/vnd.oasis.opendocument.graphics-template' => :office,
'application/vnd.oasis.opendocument.presentation' => :office,
'application/vnd.oasis.opendocument.presentation-template' => :office,
'application/vnd.oasis.opendocument.spreadsheet' => :office,
'application/vnd.oasis.opendocument.spreadsheet-template' => :office,
'application/vnd.oasis.opendocument.text' => :office,
'application/vnd.oasis.opendocument.text-template' => :office,
'application/vnd.openxmlformats-officedocument.presentationml.presentation' => :office,
'application/vnd.openxmlformats-officedocument.presentationml.slideshow' => :office,
'application/vnd.openxmlformats-officedocument.presentationml.template' => :office,
'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' => :office,
'application/vnd.openxmlformats-officedocument.spreadsheetml.template' => :office,
'application/vnd.openxmlformats-officedocument.wordprocessingml.document' => :office,
'application/vnd.openxmlformats-officedocument.wordprocessingml.template' => :office,
'application/vnd.palm' => :office,
'application/vnd.sun.xml.calc' => :office,
'application/vnd.sun.xml.calc.template' => :office,
'application/vnd.sun.xml.draw' => :office,
'application/vnd.sun.xml.draw.template' => :office,
'application/vnd.sun.xml.impress' => :office,
'application/vnd.sun.xml.impress.template' => :office,
'application/vnd.sun.xml.math' => :office,
'application/vnd.sun.xml.writer' => :office,
'application/vnd.sun.xml.writer.template' => :office,
'application/vnd.wordperfect' => :office,
'application/x-abiword' => :office,
'application/x-director' => :image,
'application/x-font-type1' => :image,
'application/x-msmetafile' => :image,
'application/x-mspublisher' => :office,
'application/x-xfig' => :image,
'audio/ogg' => :video,
'font/ttf' => :image,
'image/bmp' => :image,
'image/cgm' => :image,
'image/gif' => :image,
'image/jpeg' => :image,
'image/png' => :image,
'image/sgi' => :image,
'image/svg+xml' => :image,
'image/tiff' => :image,
'image/vnd.adobe.photoshop' => :image,
'image/vnd.djvu' => :image,
'image/vnd.dxf' => :office,
'image/vnd.fpx' => :image,
'image/vnd.ms-photo' => :image,
'image/vnd.wap.wbmp' => :image,
'image/webp' => :image,
'image/x-cmx' => :office,
'image/x-freehand' => :office,
'image/x-icon' => :image,
'image/x-mrsid-image' => :image,
'image/x-pcx' => :image,
'image/x-pict' => :office,
'image/x-portable-anymap' => :image,
'image/x-portable-bitmap' => :image,
'image/x-portable-graymap' => :image,
'image/x-portable-pixmap' => :image,
'image/x-rgb' => :image,
'image/x-tga' => :image,
'image/x-xbitmap' => :image,
'image/x-xpixmap' => :image,
'image/x-xwindowdump' => :image,
'text/csv' => :office,
'text/html' => :office,
'text/plain' => :plaintext,
'text/troff' => :image,
'video/h261' => :video,
'video/h263' => :video,
'video/h264' => :video,
'video/mp4' => :video,
'video/mpeg' => :video,
'video/quicktime' => :video,
'video/x-flv' => :video,
'video/x-m4v' => :video,
'video/x-matroska' => :video,
'video/x-mng' => :image,
'video/x-ms-wmv' => :video,
'video/x-msvideo' => :video}
SUPPORTED_EXTENSIONS =

this is a way to add support for extensions that are otherwise not known by node api (mime type)

{
'aai' => :image,
'art' => :image,
'arw' => :image,
'avs' => :image,
'bmp2' => :image,
'bmp3' => :image,
'bpg' => :image,
'cals' => :image,
'cdr' => :office,
'cin' => :image,
'clipboard' => :image,
'cmyk' => :image,
'cmyka' => :image,
'cr2' => :image,
'crw' => :image,
'cur' => :image,
'cut' => :image,
'cwk' => :office,
'dbf' => :office,
'dcm' => :image,
'dcx' => :image,
'dds' => :image,
'dib' => :image,
'dif' => :office,
'divx' => :video,
'dng' => :image,
'dpx' => :image,
'epdf' => :image,
'epi' => :image,
'eps2' => :image,
'eps3' => :image,
'epsf' => :image,
'epsi' => :image,
'ept' => :image,
'exr' => :image,
'fax' => :image,
'fb2' => :office,
'fits' => :image,
'fodg' => :office,
'fodp' => :office,
'fods' => :office,
'fodt' => :office,
'gplt' => :image,
'gray' => :image,
'hdr' => :image,
'hpw' => :office,
'hrz' => :image,
'info' => :image,
'inline' => :image,
'j2c' => :image,
'j2k' => :image,
'jbig' => :image,
'jng' => :image,
'jp2' => :image,
'jpt' => :image,
'jxr' => :image,
'key' => :office,
'log' => :plaintext,
'mat' => :image,
'mcw' => :office,
'met' => :office,
'miff' => :image,
'mml' => :office,
'mono' => :image,
'mpr' => :image,
'mrsid' => :image,
'mrw' => :image,
'mtv' => :image,
'mvg' => :image,
'mw' => :office,
'mwd' => :office,
'mxf' => :video,
'nef' => :image,
'numbers' => :office,
'orf' => :image,
'otb' => :image,
'p7' => :image,
'pages' => :office,
'palm' => :image,
'pam' => :image,
'pcd' => :image,
'pcds' => :image,
'pef' => :image,
'picon' => :image,
'pict' => :image,
'pix' => :image,
'pm' => :office,
'pm6' => :office,
'pmd' => :office,
'png00' => :image,
'png24' => :image,
'png32' => :image,
'png48' => :image,
'png64' => :image,
'png8' => :image,
'ps2' => :image,
'ps3' => :image,
'ptif' => :image,
'pwp' => :image,
'rad' => :image,
'raf' => :image,
'rfg' => :image,
'rgba' => :image,
'rla' => :image,
'rle' => :image,
'sct' => :image,
'sfw' => :image,
'sgf' => :office,
'sgv' => :office,
'slk' => :office,
'sparse-color' => :image,
'sun' => :image,
'svm' => :office,
'sylk' => :office,
'tim' => :image,
'txt' => :plaintext,
'uil' => :image,
'uof' => :office,
'uop' => :office,
'uos' => :office,
'uot' => :office,
'uyvy' => :image,
'vds' => :office,
'vdx' => :office,
'vicar' => :image,
'viff' => :image,
'vsdx' => :office,
'webm' => :video,
'wb2' => :office,
'wk1' => :office,
'wk3' => :office,
'wn' => :office,
'wpg' => :image,
'wq1' => :office,
'wq2' => :office,
'x' => :image,
'x3f' => :image,
'xcf' => :image,
'xlk' => :office,
'ycbcr' => :image,
'ycbcra' => :image,
'yuv' => :image,
'zabw' => :office}

Class Method Summary collapse

Class Method Details

.conversion_type(filepath, mimetype, try_local_mime) ⇒ Object 



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# File 'lib/aspera/preview/file_types.rb', line 278

def self.conversion_type(filepath,mimetype,try_local_mime)
  detected_mime=nil
  if try_local_mime
    detected_mime=mime_from_file(filepath)
    if mimetype.eql?(detected_mime)
      Log.log.debug("matching mime type per magic number")
    else
      # note: detected can be nil
      Log.log.debug("non matching mime types: node=[#{mimetype}], magic=[#{detected_mime}]")
    end
  end
  # 1- get type from provided mime type
  result=FileTypes::SUPPORTED_MIME_TYPES[mimetype] unless mimetype.nil?
  # 2- else, from computed mime type
  result||=FileTypes::SUPPORTED_MIME_TYPES[detected_mime] unless detected_mime.nil?
  extension = File.extname(filepath).downcase.gsub(/^\./,'')
  # 3- else, from local extensions
  result||=FileTypes::SUPPORTED_EXTENSIONS[extension]
  return result
end

.mime_from_file(filepath) ⇒ Object

private_constant :SUPPORTED_MIME_TYPES, :SUPPORTED_EXTENSIONS



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# File 'lib/aspera/preview/file_types.rb', line 271

def self.mime_from_file(filepath)
  detected_mime=MimeMagic.by_magic(File.open(filepath)).to_s
  detected_mime=MimeMagic.by_path(filepath).to_s if detected_mime.empty?
  detected_mime=nil if detected_mime.empty?
  return detected_mime
end