mime.types(5) Apple Inc. mime.types(5)
mime.types - mime type description file for cups
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.
/etc/cups - Typical CUPS configuration directory.
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)
cups-files.conf(5), cupsd.conf(5), cupsd(8), cupsfilter(8), mime.convs(5), CUPS Online Help (http://localhost:631/help)
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This page is part of the CUPS (a standards-based, open source printing system) project. Information about the project can be found at ⟨http://www.cups.org/⟩. If you have a bug report for this manual page, see ⟨http://www.cups.org/⟩. This page was obtained from the project's upstream Git repository ⟨https://github.com/apple/cups⟩ on 2023-06-23. (At that time, the date of the most recent commit that was found in the repository was 2022-06-27.) If you discover any rendering problems in this HTML version of the page, or you believe there is a better or more up-to-date source for the page, or you have corrections or improvements to the information in this COLOPHON (which is not part of the original manual page), send a mail to email@example.com 26 April 2019 CUPS mime.types(5)
Pages that refer to this page: classes.conf(5), cupsd.conf(5), cups-files.conf(5), gitweb.conf(5), mime.convs(5), printers.conf(5), subscriptions.conf(5), cupsd(8)