D7net
Home
Console
Upload
information
Create File
Create Folder
About
Tools
:
/
opt
/
lampp
/
share
/
man
/
man3
/
Filename :
inc::latest.3
back
Copy
.\" Automatically generated by Pod::Man 2.25 (Pod::Simple 3.20) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. Capital omega is used to do unbreakable dashes and .\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, .\" nothing in troff, for use with C<>. .tr \(*W- .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' .ie n \{\ . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} .el\{\ . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' 'br\} .\" .\" Escape single quotes in literal strings from groff's Unicode transform. .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" .\" If the F register is turned on, we'll generate index entries on stderr for .\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index .\" entries marked with X<> in POD. Of course, you'll have to process the .\" output yourself in some meaningful fashion. .ie \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . nr % 0 . rr F .\} .el \{\ . de IX .. .\} .\" .\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). .\" Fear. Run. Save yourself. No user-serviceable parts. . \" fudge factors for nroff and troff .if n \{\ . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] \fP .\} .if t \{\ . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff .if n \{\ . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds / .\} .if t \{\ . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' .\} . \" troff and (daisy-wheel) nroff accents .ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' .ds 8 \h'\*(#H'\(*b\h'-\*(#H' .ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] .ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' .ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' .ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] .ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] .ds ae a\h'-(\w'a'u*4/10)'e .ds Ae A\h'-(\w'A'u*4/10)'E . \" corrections for vroff .if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' .if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' . \" for low resolution devices (crt and lpr) .if \n(.H>23 .if \n(.V>19 \ \{\ . ds : e . ds 8 ss . ds o a . ds d- d\h'-1'\(ga . ds D- D\h'-1'\(hy . ds th \o'bp' . ds Th \o'LP' . ds ae ae . ds Ae AE .\} .rm #[ #] #H #V #F C .\" ======================================================================== .\" .IX Title "inc::latest 3" .TH inc::latest 3 "2013-03-04" "perl v5.16.3" "Perl Programmers Reference Guide" .\" For nroff, turn off justification. Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" inc::latest \- use modules bundled in inc/ if they are newer than installed ones .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 2 \& # in Build.PL \& use inc::latest \*(AqModule::Build\*(Aq; .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" The \f(CW\*(C`inc::latest\*(C'\fR module helps bootstrap configure-time dependencies for \s-1CPAN\s0 distributions. These dependencies get bundled into the \f(CW\*(C`inc\*(C'\fR directory within a distribution and are used by Build.PL (or Makefile.PL). .PP Arguments to \f(CW\*(C`inc::latest\*(C'\fR are module names that are checked against both the current \f(CW@INC\fR array and against specially-named directories in \f(CW\*(C`inc\*(C'\fR. If the bundled verison is newer than the installed one (or the module isn't installed, then, the bundled directory is added to the start of <@INC> and the module is loaded from there. .PP There are actually two variations of \f(CW\*(C`inc::latest\*(C'\fR \*(-- one for authors and one for the \f(CW\*(C`inc\*(C'\fR directory. For distribution authors, the \f(CW\*(C`inc::latest\*(C'\fR installed in the system will record modules loaded via \f(CW\*(C`inc::latest\*(C'\fR and can be used to create the bundled files in \f(CW\*(C`inc\*(C'\fR, including writing the second variation as \f(CW\*(C`inc/latest.pm\*(C'\fR. .PP This second \f(CW\*(C`inc::latest\*(C'\fR is the one that is loaded in a distribution being installed (e.g. from Build.PL). This bundled \f(CW\*(C`inc::latest\*(C'\fR is the one that determines which module to load. .SS "Special notes on bundling" .IX Subsection "Special notes on bundling" The \f(CW\*(C`inc::latest\*(C'\fR module creates bundled directories based on the packlist file of an installed distribution. Even though \f(CW\*(C`inc::latest\*(C'\fR takes module name arguments, it is better to think of it as bundling and making available entire \fIdistributions\fR. When a module is loaded through \f(CW\*(C`inc::latest\*(C'\fR, it looks in all bundled distributions in \f(CW\*(C`inc/\*(C'\fR for a newer module than can be found in the existing \f(CW@INC\fR array. .PP Thus, the module-name provided should usually be the \*(L"top-level\*(R" module name of a distribution, though this is not strictly required. For example, Module::Build has a number of heuristics to map module names to packlists, allowing users to do things like this: .PP .Vb 1 \& use inc::latest \*(AqDevel::AssertOS::Unix\*(Aq; .Ve .PP even though Devel::AssertOS::Unix is contained within the Devel-CheckOS distribution. .PP At the current time, packlists are required. Thus, bundling dual-core modules may require a 'forced install' over versions in the latest version of perl in order to create the necessary packlist for bundling. .SH "USAGE" .IX Header "USAGE" When calling \f(CW\*(C`use\*(C'\fR, the bundled \f(CW\*(C`inc::latest\*(C'\fR takes a single module name and optional arguments to pass to that module's own import method. .PP .Vb 1 \& use \*(Aqinc::latest\*(Aq \*(AqFoo::Bar\*(Aq qw/foo bar baz/; .Ve .SS "Author-mode" .IX Subsection "Author-mode" You are in author-mode inc::latest if any of the Author-mode methods are available. For example: .PP .Vb 3 \& if ( inc::latest\->can(\*(Aqwrite\*(Aq) ) { \& inc::latest\->write(\*(Aqinc\*(Aq); \& } .Ve .IP "\fIloaded_modules()\fR" 4 .IX Item "loaded_modules()" .Vb 1 \& my @list = inc::latest\->loaded_modules; .Ve .Sp This takes no arguments and always returns a list of module names requested for loading via \*(L"use inc::latest '\s-1MODULE\s0'\*(R", regardless of wether the load was successful or not. .IP "\fIwrite()\fR" 4 .IX Item "write()" .Vb 1 \& inc::latest\->write( \*(Aqinc\*(Aq ); .Ve .Sp This writes the bundled version of inc::latest to the directory name given as an argument. It almost all cases, it should be '\f(CW\*(C`inc\*(C'\fR'. .IP "\fIbundle_module()\fR" 4 .IX Item "bundle_module()" .Vb 3 \& for my $mod ( inc::latest\->loaded_modules ) { \& inc::latest\->bundle_module($mod, $dir); \& } .Ve .Sp If \f(CW$mod\fR corresponds to a packlist, then this function creates a specially-named directory in \f(CW$dir\fR and copies all .pm files from the modlist to the new directory (which almost always should just be 'inc'). For example, if Foo::Bar is the name of the module, and \f(CW$dir\fR is 'inc', then the directory would be \&'inc/inc_Foo\-Bar' and contain files like this: .Sp .Vb 1 \& inc/inc_Foo\-Bar/Foo/Bar.pm .Ve .Sp Currently, \f(CW$mod\fR \fBmust\fR have a packlist. If this is not the case (e.g. for a dual-core module), then the bundling will fail. You may be able to create a packlist by forced installing the module on top of the version that came with core Perl. .SS "As bundled in inc/" .IX Subsection "As bundled in inc/" All methods are private. Only the \f(CW\*(C`import\*(C'\fR method is public. .SH "AUTHOR" .IX Header "AUTHOR" Eric Wilhelm <ewilhelm@cpan.org>, David Golden <dagolden@cpan.org> .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright (c) 2009 by Eric Wilhelm and David Golden .PP This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. .SH "SEE ALSO" .IX Header "SEE ALSO" Module::Build