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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" Module::Metadata \- Gather package and POD information from perl module files .SH "VERSION" .IX Header "VERSION" version 1.000037 .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& use Module::Metadata; \& \& # information about a .pm file \& my $info = Module::Metadata\->new_from_file( $file ); \& my $version = $info\->version; \& \& # CPAN META \*(Aqprovides\*(Aq field for .pm files in a directory \& my $provides = Module::Metadata\->provides( \& dir => \*(Aqlib\*(Aq, version => 2 \& ); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" This module provides a standard way to gather metadata about a .pm file through (mostly) static analysis and (some) code execution. When determining the version of a module, the \f(CW$VERSION\fR assignment is \f(CW\*(C`eval\*(C'\fRed, as is traditional in the \s-1CPAN\s0 toolchain. .SH "CLASS METHODS" .IX Header "CLASS METHODS" .ie n .SS """new_from_file($filename, collect_pod => 1, decode_pod => 1)""" .el .SS "\f(CWnew_from_file($filename, collect_pod => 1, decode_pod => 1)\fP" .IX Subsection "new_from_file($filename, collect_pod => 1, decode_pod => 1)" Constructs a \f(CW\*(C`Module::Metadata\*(C'\fR object given the path to a file. Returns undef if the filename does not exist. .PP \&\f(CW\*(C`collect_pod\*(C'\fR is a optional boolean argument that determines whether \s-1POD\s0 data is collected and stored for reference. \s-1POD\s0 data is not collected by default. \s-1POD\s0 headings are always collected. .PP If the file begins by an \s-1UTF\-8, UTF\-16BE\s0 or \s-1UTF\-16LE\s0 byte-order mark, then it is skipped before processing, and the content of the file is also decoded appropriately starting from perl 5.8. .PP Alternatively, if \f(CW\*(C`decode_pod\*(C'\fR is set, it will decode the collected pod sections according to the \f(CW\*(C`=encoding\*(C'\fR declaration. .ie n .SS """new_from_handle($handle, $filename, collect_pod => 1, decode_pod => 1)""" .el .SS "\f(CWnew_from_handle($handle, $filename, collect_pod => 1, decode_pod => 1)\fP" .IX Subsection "new_from_handle($handle, $filename, collect_pod => 1, decode_pod => 1)" This works just like \f(CW\*(C`new_from_file\*(C'\fR, except that a handle can be provided as the first argument. .PP Note that there is no validation to confirm that the handle is a handle or something that can act like one. Passing something that isn't a handle will cause a exception when trying to read from it. The \f(CW\*(C`filename\*(C'\fR argument is mandatory or undef will be returned. .PP You are responsible for setting the decoding layers on \f(CW$handle\fR if required. .ie n .SS """new_from_module($module, collect_pod => 1, inc => \e@dirs, decode_pod => 1)""" .el .SS "\f(CWnew_from_module($module, collect_pod => 1, inc => \e@dirs, decode_pod => 1)\fP" .IX Subsection "new_from_module($module, collect_pod => 1, inc => @dirs, decode_pod => 1)" Constructs a \f(CW\*(C`Module::Metadata\*(C'\fR object given a module or package name. Returns undef if the module cannot be found. .PP In addition to accepting the \f(CW\*(C`collect_pod\*(C'\fR and \f(CW\*(C`decode_pod\*(C'\fR arguments as described above, this method accepts a \f(CW\*(C`inc\*(C'\fR argument which is a reference to an array of directories to search for the module. If none are given, the default is \f(CW@INC\fR. .PP If the file that contains the module begins by an \s-1UTF\-8, UTF\-16BE\s0 or \&\s-1UTF\-16LE\s0 byte-order mark, then it is skipped before processing, and the content of the file is also decoded appropriately starting from perl 5.8. .ie n .SS """find_module_by_name($module, \e@dirs)""" .el .SS "\f(CWfind_module_by_name($module, \e@dirs)\fP" .IX Subsection "find_module_by_name($module, @dirs)" Returns the path to a module given the module or package name. A list of directories can be passed in as an optional parameter, otherwise \&\f(CW@INC\fR is searched. .PP Can be called as either an object or a class method. .ie n .SS """find_module_dir_by_name($module, \e@dirs)""" .el .SS "\f(CWfind_module_dir_by_name($module, \e@dirs)\fP" .IX Subsection "find_module_dir_by_name($module, @dirs)" Returns the entry in \f(CW@dirs\fR (or \f(CW@INC\fR by default) that contains the module \f(CW$module\fR. A list of directories can be passed in as an optional parameter, otherwise \f(CW@INC\fR is searched. .PP Can be called as either an object or a class method. .ie n .SS """provides( %options )""" .el .SS "\f(CWprovides( %options )\fP" .IX Subsection "provides( %options )" This is a convenience wrapper around \f(CW\*(C`package_versions_from_directory\*(C'\fR to generate a \s-1CPAN META \s0\f(CW\*(C`provides\*(C'\fR data structure. It takes key/value pairs. Valid option keys include: .IP "version \fB(required)\fR" 4 .IX Item "version (required)" Specifies which version of the CPAN::Meta::Spec should be used as the format of the \f(CW\*(C`provides\*(C'\fR output. Currently only '1.4' and '2' are supported (and their format is identical). This may change in the future as the definition of \f(CW\*(C`provides\*(C'\fR changes. .Sp The \f(CW\*(C`version\*(C'\fR option is required. If it is omitted or if an unsupported version is given, then \f(CW\*(C`provides\*(C'\fR will throw an error. .IP "dir" 4 .IX Item "dir" Directory to search recursively for \fI.pm\fR files. May not be specified with \&\f(CW\*(C`files\*(C'\fR. .IP "files" 4 .IX Item "files" Array reference of files to examine. May not be specified with \f(CW\*(C`dir\*(C'\fR. .IP "prefix" 4 .IX Item "prefix" String to prepend to the \f(CW\*(C`file\*(C'\fR field of the resulting output. This defaults to \fIlib\fR, which is the common case for most \s-1CPAN\s0 distributions with their \&\fI.pm\fR files in \fIlib\fR. This option ensures the \s-1META\s0 information has the correct relative path even when the \f(CW\*(C`dir\*(C'\fR or \f(CW\*(C`files\*(C'\fR arguments are absolute or have relative paths from a location other than the distribution root. .PP For example, given \f(CW\*(C`dir\*(C'\fR of 'lib' and \f(CW\*(C`prefix\*(C'\fR of 'lib', the return value is a hashref of the form: .PP .Vb 7 \& { \& \*(AqPackage::Name\*(Aq => { \& version => \*(Aq0.123\*(Aq, \& file => \*(Aqlib/Package/Name.pm\*(Aq \& }, \& \*(AqOtherPackage::Name\*(Aq => ... \& } .Ve .ie n .SS """package_versions_from_directory($dir, \e@files?)""" .el .SS "\f(CWpackage_versions_from_directory($dir, \e@files?)\fP" .IX Subsection "package_versions_from_directory($dir, @files?)" Scans \f(CW$dir\fR for .pm files (unless \f(CW@files\fR is given, in which case looks for those files in \f(CW$dir\fR \- and reads each file for packages and versions, returning a hashref of the form: .PP .Vb 7 \& { \& \*(AqPackage::Name\*(Aq => { \& version => \*(Aq0.123\*(Aq, \& file => \*(AqPackage/Name.pm\*(Aq \& }, \& \*(AqOtherPackage::Name\*(Aq => ... \& } .Ve .PP The \f(CW\*(C`DB\*(C'\fR and \f(CW\*(C`main\*(C'\fR packages are always omitted, as are any \*(L"private\*(R" packages that have leading underscores in the namespace (e.g. \&\f(CW\*(C`Foo::_private\*(C'\fR) .PP Note that the file path is relative to \f(CW$dir\fR if that is specified. This \fBmust not\fR be used directly for \s-1CPAN META \s0\f(CW\*(C`provides\*(C'\fR. See the \f(CW\*(C`provides\*(C'\fR method instead. .ie n .SS """log_info (internal)""" .el .SS "\f(CWlog_info (internal)\fP" .IX Subsection "log_info (internal)" Used internally to perform logging; imported from Log::Contextual if Log::Contextual has already been loaded, otherwise simply calls warn. .SH "OBJECT METHODS" .IX Header "OBJECT METHODS" .ie n .SS """name()""" .el .SS "\f(CWname()\fP" .IX Subsection "name()" Returns the name of the package represented by this module. If there is more than one package, it makes a best guess based on the filename. If it's a script (i.e. not a *.pm) the package name is \&'main'. .ie n .SS """version($package)""" .el .SS "\f(CWversion($package)\fP" .IX Subsection "version($package)" Returns the version as defined by the \f(CW$VERSION\fR variable for the package as returned by the \f(CW\*(C`name\*(C'\fR method if no arguments are given. If given the name of a package it will attempt to return the version of that package if it is specified in the file. .ie n .SS """filename()""" .el .SS "\f(CWfilename()\fP" .IX Subsection "filename()" Returns the absolute path to the file. Note that this file may not actually exist on disk yet, e.g. if the module was read from an in-memory filehandle. .ie n .SS """packages_inside()""" .el .SS "\f(CWpackages_inside()\fP" .IX Subsection "packages_inside()" Returns a list of packages. Note: this is a raw list of packages discovered (or assumed, in the case of \f(CW\*(C`main\*(C'\fR). It is not filtered for \f(CW\*(C`DB\*(C'\fR, \f(CW\*(C`main\*(C'\fR or private packages the way the \&\f(CW\*(C`provides\*(C'\fR method does. Invalid package names are not returned, for example \*(L"Foo:Bar\*(R". Strange but valid package names are returned, for example \*(L"Foo::Bar::\*(R", and are left up to the caller on how to handle. .ie n .SS """pod_inside()""" .el .SS "\f(CWpod_inside()\fP" .IX Subsection "pod_inside()" Returns a list of \s-1POD\s0 sections. .ie n .SS """contains_pod()""" .el .SS "\f(CWcontains_pod()\fP" .IX Subsection "contains_pod()" Returns true if there is any \s-1POD\s0 in the file. .ie n .SS """pod($section)""" .el .SS "\f(CWpod($section)\fP" .IX Subsection "pod($section)" Returns the \s-1POD\s0 data in the given section. .ie n .SS """is_indexable($package)"" or ""is_indexable()""" .el .SS "\f(CWis_indexable($package)\fP or \f(CWis_indexable()\fP" .IX Subsection "is_indexable($package) or is_indexable()" Available since version 1.000020. .PP Returns a boolean indicating whether the package (if provided) or any package (otherwise) is eligible for indexing by \s-1PAUSE,\s0 the Perl Authors Upload Server. Note This only checks for valid \f(CW\*(C`package\*(C'\fR declarations, and does not take any ownership information into account. .SH "SUPPORT" .IX Header "SUPPORT" Bugs may be submitted through the \s-1RT\s0 bug tracker <https://rt.cpan.org/Public/Dist/Display.html?Name=Module-Metadata> (or bug\-Module\-Metadata@rt.cpan.org <mailto:bug-Module-Metadata@rt.cpan.org>). .PP There is also a mailing list available for users of this distribution, at <http://lists.perl.org/list/cpan\-workers.html>. .PP There is also an irc channel available for users of this distribution, at \&\f(CW\*(C`#toolchain\*(C'\fR on \f(CW\*(C`irc.perl.org\*(C'\fR <irc://irc.perl.org/#toolchain>. .SH "AUTHOR" .IX Header "AUTHOR" Original code from Module::Build::ModuleInfo by Ken Williams <kwilliams@cpan.org>, Randy W. Sims <RandyS@ThePierianSpring.org> .PP Released as Module::Metadata by Matt S Trout (mst) <mst@shadowcat.co.uk> with assistance from David Golden (xdg) <dagolden@cpan.org>. .SH "CONTRIBUTORS" .IX Header "CONTRIBUTORS" .IP "\(bu" 4 Karen Etheridge <ether@cpan.org> .IP "\(bu" 4 David Golden <dagolden@cpan.org> .IP "\(bu" 4 Vincent Pit <perl@profvince.com> .IP "\(bu" 4 Matt S Trout <mst@shadowcat.co.uk> .IP "\(bu" 4 Chris Nehren <apeiron@cpan.org> .IP "\(bu" 4 Tomas Doran <bobtfish@bobtfish.net> .IP "\(bu" 4 Olivier Mengue\*' <dolmen@cpan.org> .IP "\(bu" 4 Graham Knop <haarg@haarg.org> .IP "\(bu" 4 tokuhirom <tokuhirom@gmail.com> .IP "\(bu" 4 Tatsuhiko Miyagawa <miyagawa@bulknews.net> .IP "\(bu" 4 Christian Walde <walde.christian@googlemail.com> .IP "\(bu" 4 Leon Timmermans <fawaka@gmail.com> .IP "\(bu" 4 Peter Rabbitson <ribasushi@cpan.org> .IP "\(bu" 4 Steve Hay <steve.m.hay@googlemail.com> .IP "\(bu" 4 Jerry D. Hedden <jdhedden@cpan.org> .IP "\(bu" 4 Craig A. Berry <cberry@cpan.org> .IP "\(bu" 4 Craig A. Berry <craigberry@mac.com> .IP "\(bu" 4 David Mitchell <davem@iabyn.com> .IP "\(bu" 4 David Steinbrunner <dsteinbrunner@pobox.com> .IP "\(bu" 4 Edward Zborowski <ed@rubensteintech.com> .IP "\(bu" 4 Gareth Harper <gareth@broadbean.com> .IP "\(bu" 4 James Raspass <jraspass@gmail.com> .IP "\(bu" 4 Chris 'BinGOs' Williams <chris@bingosnet.co.uk> .IP "\(bu" 4 Josh Jore <jjore@cpan.org> .IP "\(bu" 4 Kent Fredric <kentnl@cpan.org> .SH "COPYRIGHT & LICENSE" .IX Header "COPYRIGHT & LICENSE" Original code Copyright (c) 2001\-2011 Ken Williams. Additional code Copyright (c) 2010\-2011 Matt Trout and David Golden. All rights reserved. .PP This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
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