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.\" ======================================================================
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.TH RPM 3 "perl v5.6.0" "2001-04-27" "User Contributed Perl Documentation"
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\&\s-1RPM\s0 \- Perl interface to the \s-1API\s0 for the \s-1RPM\s0 Package Manager
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.IX Header "DESCRIPTION"
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The \fBPerl-RPM\fR package is an extension for natively linking the
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functionality of the \fB\s-1RPM\s0 Package Manager\fR with the extension facility of
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Perl. The aim is to offer all the functionality made available via the C
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\&\s-1API\s0 in the form of Perl object classes.
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At present, the package-manipulation functionality is not yet implemented.
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The \fB\s-1RPM:\s0:Database\fR and \fB\s-1RPM:\s0:Header\fR packages do provide access to the
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information contained within the database of installed packages, and
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individual package headers, respectively. The \fB\s-1RPM:\s0:Error\fR package is
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available, which provides support routines for signaling and catching
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errors. Additionally, there is the \fB\s-1RPM:\s0:Constants\fR package which provides
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a number of values from the \fBrpm\fR library, referred to by the same name used
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.SH "UTILITY FUNCTIONS"
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.IX Header "UTILITY FUNCTIONS"
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The following utility functions are exported by default from \fB\s-1RPM\s0\fR:
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.IX Item "rpm_osname"
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Returns the text name of the O/S, as derived from the \fBrpm\fR configuration
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files. This is the O/S token that \fBrpm\fR will use to refer to the running
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.IX Item "rpm_archname"
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As above, but returns the architecture string instead. Again, this may not
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directly match the running system, but rather is the value that \fBrpm\fR is
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using. \fBrpm\fR will use the lowest-matching architecture whenever possible,
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for maximum cross-platform compatibility.
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The following utility function may be explicitly requested via \fBuse\fR or
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Allows RPM-style comparison of version/release pairs without having the full
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\&\fB\s-1RPM:\s0:Header\fR objects in memory. This enables programs to compare versions
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without having to worry about how \s-1RPM\s0 handles the mixture of alphanumeric
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cases that are supported internally. The return value is \-1, 0 or 1, as with
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any comparison operator. This is purposefully named differently from the
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\&\fBcmpver\fR method in \fB\s-1RPM:\s0:Header\fR so as to avoid confusion.
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.IX Header "DIAGNOSTICS"
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When an error occurs in either the C-level \fBrpm\fR library or internally
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within these libraries, it is made available via a special dual-nature
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variable \fB$RPM::err\fR. When evaluated in a numeric context, it returns the
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integer code value of the error. When taken in a string context, it returns
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the text message associated with the error. This is intended to closely
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mimic the behavior of the special Perl variable "\f(CW\*(C`$!\*(C'\fR".
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This is currently regarded as alpha-quality software. The interface is
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subject to change in future releases.
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.IX Header "SEE ALSO"
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the RPM::Constants manpage, the RPM::Database manpage, the RPM::Error manpage, the RPM::Header manpage,
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the perl manpage, the rpm manpage
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Randy J. Ray <rjray@blackperl.com>
added
removed
Perl-RPM/blib/man3/RPM.3pm
