man/mime.types.man

   1 .\"
   2 .\" "$Id: mime.types.man 7670 2008-06-17 22:42:08Z mike $"
   3 .\"
   4 .\"   mime.types man page for the Common UNIX Printing System (CUPS).
   5 .\"
   6 .\"   Copyright 2007-2009 by Apple Inc.
   7 .\"   Copyright 1997-2006 by Easy Software Products.
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  15 .TH mime.types 5 "CUPS" "16 May 2009" "Apple Inc."
  16 .SH NAME
  17 mime.types \- mime type description file for cups
  18 .SH DESCRIPTION
  19 The \fImime.types\fR file defines the recognized file types.
  20 .LP
  21 Additional file types can be added to \fImime.types\fR or
  22 (preferably) in additional files in the CUPS configuration
  23 directory with the extension ".types".
  24 .LP
  25 Each line in the \fImime.types\fR file is a comment, blank, or
  26 rule line. Comment lines start with the # character. Rule lines
  27 start with the MIME type name and are optionally followed by a
  28 series of file recognition rules that are used to automatically
  29 identify print and web files:
  30 .br
  31 .nf
  32
  33     super/type rule [ ... ruleN]
  34 .fi
  35 MIME type names are case-insensitive and are sorted in ascending alphanumeric
  36 order for the purposes of matching. See the "TYPE MATCHING AND PRIORITY"
  37 section for more information.
  38 .LP
  39 The rules may be grouped using parenthesis, joined using "+" for a
  40 logical AND and "," or whitespace for a logical OR, and negated using
  41 "!".
  42 .SH RULES
  43 Rules take two forms - a filename extension by itself and functions with test
  44 values inside parenthesis. The following functions are available:
  45 .TP 5
  46 match("pattern")
  47 .br
  48 Pattern match on filename
  49 .TP 5
  50 ascii(offset,length)
  51 .br
  52 True if bytes are valid printable ASCII (CR, NL, TAB, BS, 32-126)
  53 .TP 5
  54 printable(offset,length)
  55 .br
  56 True if bytes are printable 8-bit chars (CR, NL, TAB, BS, 32-126, 128-254)
  57 .TP 5
  58 priority(number)
  59 .br
  60 Specifies the relative priority of this MIME type. The default priority is 100.
  61 Larger values have higher priority while smaller values have lower priority.
  62 .TP 5
  63 string(offset,"string")
  64 .br
  65 True if bytes are identical to string
  66 .TP 5
  67 istring(offset,"string")
  68 .br
  69 True if a case-insensitive comparison of the bytes is identical
  70 .TP 5
  71 char(offset,value)
  72 .br
  73 True if byte is identical
  74 .TP 5
  75 short(offset,value)
  76 .br
  77 True if 16-bit integer is identical
  78 .TP 5
  79 int(offset,value)
  80 .br
  81 True if 32-bit integer is identical
  82 .TP 5
  83 locale("string")
  84 .br
  85 True if current locale matches string
  86 .TP 5
  87 contains(offset,range,"string")
  88 .br
  89 True if the range contains the string
  90 .SH STRING CONSTANTS
  91 String constants can be specified inside quotes ("") for strings
  92 containing whitespace and angle brackets (<>) for hexadecimal
  93 strings.
  94 .SH TYPE MATCHING AND PRIORITY
  95 When CUPS needs to determine the MIME type of a given file, it checks every
  96 MIME type defined in the .types files. When two types have the same matching
  97 rules, the type chosen will depend on the type name and priority, with higher-
  98 priority types being used over lower-priority ones. If the types have the same
  99 priority, the type names are sorted alphanumerically in ascending order and the
 100 first type is chosen.
 101 .LP
 102 For example, if two types "text/bar" and "text/foo" are defined as matching the
 103 extension "doc", normally the type "text/bar" will be chosen since its name is
 104 alphanumerically smaller than "text/foo". However, if "text/foo" also defines a
 105 higher priority than "text/bar", "text/foo" will be chosen instead.
 106 .SH SEE ALSO
 107 \fIclasses.conf(5)\fR, \fIcupsd(8)\fR, \fIcupsd.conf(5)\fR,
 108 \fImime.convs(5)\fR, \fIprinters.conf(5)\fR,
 109 .br
 110 http://localhost:631/help
 111 .SH COPYRIGHT
 112 Copyright 2007-2009 by Apple Inc.
 113 .\"
 114 .\" End of "$Id: mime.types.man 7670 2008-06-17 22:42:08Z mike $".
 115 .\"