NAME

       mime.types - mime type description file for cups

DESCRIPTION

       The mime.types file defines the recognized file types.

       Additional  file  types  are  specified  in  files  with  the extension .types in the CUPS
       configuration directory.

       Each line in the mime.types file is a comment, blank, or rule line.  Comment  lines  start
       with  the  #  character.   Rule  lines  start  with the MIME media type and are optionally
       followed by a series of file recognition rules:

           mime/type [ rule ... rule ]

       Rules can be extended over multiple lines using the backslash character (\):

           mime/type [ really-really-really-long-rule ... \
             rule ]

       MIME media types specified by the mime/type field are case-insensitive and are  sorted  in
       ascending  alphanumeric  order  for  the purposes of matching.  See the "TYPE MATCHING AND
       PRIORITY" section for more information.

       The rules may be grouped using parenthesis, joined using "+" for  a  logical  AND,  joined
       using "," or whitespace for a logical OR, and negated using "!".

   RULES
       Rules  take  two  forms  -  a  filename extension by itself and functions with test values
       inside parenthesis.  The following functions are available:

       match("pattern")
            True if the filename matches the given shell wildcard pattern.

       ascii(offset,length)
            True if the length bytes starting at offset are valid printable ASCII (CR,  NL,  TAB,
            BS, 32-126).

       printable(offset,length)
            True  if  the length bytes starting at offset are printable 8-bit chars (CR, NL, TAB,
            BS, 32-126, 128-254).

       priority(number)
            Specifies the relative priority of this MIME media type.   The  default  priority  is
            100.  Larger values have higher priority while smaller values have lower priority.

       string(offset,"string")
            True if the bytes starting at offset are identical to string.

       istring(offset,"string")
            True if the bytes starting at offset match string without respect to case.

       char(offset,value)
            True if the byte at offset is identical to value.

       short(offset,value)
            True if the 16-bit big-endian integer at offset is identical to value.

       int(offset,value)
            True if the 32-bit big-endian integer at offset is identical to value.

       locale("string")
            True if current locale matches string.

       contains(offset,range,"string")
            True if the bytes starting at offset for range bytes contains string.

   STRING CONSTANTS
       String constants can be specified inside quotes ("") for strings containing whitespace and
       angle brackets (<>) for hexadecimal strings.

   TYPE MATCHING AND PRIORITY
       When CUPS needs to determine the MIME media type of a given file,  it  checks  every  MIME
       media  type  defined  in the .types files.  When two or more types match a given file, the
       type chosen will depend on the type name and priority, with  higher-priority  types  being
       used  over  lower-priority  ones.  If the types have the same priority, the type names are
       sorted alphanumerically in ascending order and the first type is chosen.

       For example, if two types "text/bar" and "text/foo" are defined as matching the  extension
       "doc",  normally  the  type  "text/bar"  will be chosen since its name is alphanumerically
       smaller than "text/foo".  However, if "text/foo"  also  defines  a  higher  priority  than
       "text/bar", "text/foo" will be chosen instead.

FILES

       /etc/cups - Typical CUPS configuration directory.

EXAMPLES

       Define two MIME media types for raster data, with one being a subset with higher priority:

           application/vnd.cups-raster  string(0,"RaSt") string(0,"tSaR") \
                                         string(0,"RaS2") string(0,"2SaR") \
                                         string(0,"RaS3") string(0,"3SaR")

           image/pwg-raster              string(0,"RaS2") + \
                                         string(4,PwgRaster<00>) priority(150)

SEE ALSO

       cups-files.conf(5),  cupsd.conf(5),  cupsd(8),  cupsfilter(8),  mime.convs(5), CUPS Online
       Help (http://localhost:631/help)

COPYRIGHT

       Copyright © 2021-2023 by OpenPrinting.