mirror of https://gitee.com/openkylin/cups.git
109 lines
4.6 KiB
Groff
109 lines
4.6 KiB
Groff
.\"
|
||
.\" mime.types man page for CUPS.
|
||
.\"
|
||
.\" Copyright © 2007-2019 by Apple Inc.
|
||
.\" Copyright © 1997-2006 by Easy Software Products.
|
||
.\"
|
||
.\" Licensed under Apache License v2.0. See the file "LICENSE" for more
|
||
.\" information.
|
||
.\"
|
||
.TH mime.types 5 "CUPS" "26 April 2019" "Apple Inc."
|
||
.SH NAME
|
||
mime.types \- mime type description file for cups
|
||
.SH DESCRIPTION
|
||
The \fBmime.types\fR file defines the recognized file types.
|
||
.LP
|
||
Additional file types are specified in files with the extension \fI.types\fR in the CUPS configuration directory.
|
||
.LP
|
||
Each line in the \fBmime.types\fR 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:
|
||
.nf
|
||
|
||
\fImime/type \fR[ \fIrule \fR... \fIrule \fR]
|
||
|
||
.fi
|
||
Rules can be extended over multiple lines using the backslash character (\\):
|
||
.nf
|
||
|
||
\fImime/type \fR[ \fIreally-really-really-long-rule \fR... \fB\\
|
||
\fIrule \fR]
|
||
|
||
.fi
|
||
MIME media types specified by the \fImime/type\fR 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.
|
||
.LP
|
||
The rules may be grouped using parenthesis, joined using "+" for a logical AND, joined using "," or whitespace for a logical OR, and negated using "!".
|
||
.SS RULES
|
||
Rules take two forms - a filename extension by itself and functions with test
|
||
values inside parenthesis.
|
||
The following functions are available:
|
||
.TP 5
|
||
\fBmatch("\fIpattern\fB")\fR
|
||
True if the filename matches the given shell wildcard \fIpattern\fR.
|
||
.TP 5
|
||
\fBascii(\fIoffset\fB,\fIlength\fB)\fR
|
||
True if the \fIlength\fR bytes starting at \fIoffset\fR are valid printable ASCII (CR, NL, TAB, BS, 32-126).
|
||
.TP 5
|
||
\fBprintable(\fIoffset\fB,\fIlength\fB)\fR
|
||
True if the \fIlength\fR bytes starting at \fIoffset\fR are printable 8-bit chars (CR, NL, TAB, BS, 32-126, 128-254).
|
||
.TP 5
|
||
\fBpriority(\fInumber\fB)\fR
|
||
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.
|
||
.TP 5
|
||
\fBstring(\fIoffset\fB,"\fIstring\fB")\fR
|
||
True if the bytes starting at \fIoffset\fR are identical to \fIstring\fR.
|
||
.TP 5
|
||
\fBistring(\fIoffset\fB,"\fIstring\fB")\fR
|
||
True if the bytes starting at \fIoffset\fR match \fIstring\fR without respect to case.
|
||
.TP 5
|
||
\fBchar(\fIoffset\fB,\fIvalue\fB)\fR
|
||
True if the byte at \fIoffset\fR is identical to \fIvalue\fR.
|
||
.TP 5
|
||
\fBshort(\fIoffset\fB,\fIvalue\fB)\fR
|
||
True if the 16-bit big-endian integer at \fIoffset\fR is identical to \fIvalue\fR.
|
||
.TP 5
|
||
\fBint(\fIoffset\fB,\fIvalue\fB)\fR
|
||
True if the 32-bit big-endian integer at \fIoffset\fR is identical to \fIvalue\fR.
|
||
.TP 5
|
||
\fBlocale("\fIstring\fB")\fR
|
||
True if current locale matches \fIstring\fR.
|
||
.TP 5
|
||
\fBcontains(\fIoffset\fB,\fIrange\fB,"\fIstring\fB")\fR
|
||
True if the bytes starting at \fIoffset\fR for \fIrange\fR bytes contains \fIstring\fR.
|
||
.SS STRING CONSTANTS
|
||
String constants can be specified inside quotes ("") for strings containing whitespace and angle brackets (<>) for hexadecimal strings.
|
||
.SS 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 \fI.types\fR 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.
|
||
.LP
|
||
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.
|
||
.SH FILES
|
||
\fI/etc/cups\fR - Typical CUPS configuration directory.
|
||
.SH EXAMPLES
|
||
Define two MIME media types for raster data, with one being a subset with higher priority:
|
||
.nf
|
||
|
||
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)
|
||
.fi
|
||
.SH SEE ALSO
|
||
.BR cups-files.conf (5),
|
||
.BR cupsd.conf (5),
|
||
.BR cupsd (8),
|
||
.BR cupsfilter (8),
|
||
.BR mime.convs (5),
|
||
CUPS Online Help (http://localhost:631/help)
|
||
.SH COPYRIGHT
|
||
Copyright \[co] 2007-2019 by Apple Inc.
|