20d2a30f8f
Replace the perl/Makefile.PL and the fallback perl/Makefile used under
NO_PERL_MAKEMAKER=NoThanks with a much simpler implementation heavily
inspired by how the i18n infrastructure's build process works[1].
The reason for having the Makefile.PL in the first place is that it
was initially[2] building a perl C binding to interface with libgit,
this functionality, that was removed[3] before Git.pm ever made it to
the master branch.
We've since since started maintaining a fallback perl/Makefile, as
MakeMaker wouldn't work on some platforms[4]. That's just the tip of
the iceberg. We have the PM.stamp hack in the top-level Makefile[5] to
detect whether we need to regenerate the perl/perl.mak, which I fixed
just recently to deal with issues like the perl version changing from
under us[6].
There is absolutely no reason for why this needs to be so complex
anymore. All we're getting out of this elaborate Rube Goldberg machine
was copying perl/* to perl/blib/* as we do a string-replacement on
the *.pm files to hardcode @@LOCALEDIR@@ in the source, as well as
pod2man-ing Git.pm & friends.
So replace the whole thing with something that's pretty much a copy of
how we generate po/build/**.mo from po/*.po, just with a small sed(1)
command instead of msgfmt. As that's being done rename the files
from *.pm to *.pmc just to indicate that they're generated (see
"perldoc -f require").
While I'm at it, change the fallback for Error.pm from being something
where we'll ship our own Error.pm if one doesn't exist at build time
to one where we just use a Git::Error wrapper that'll always prefer
the system-wide Error.pm, only falling back to our own copy if it
really doesn't exist at runtime. It's now shipped as
Git::FromCPAN::Error, making it easy to add other modules to
Git::FromCPAN::* in the future if that's needed.
Functional changes:
* This will not always install into perl's idea of its global
"installsitelib". This only potentially matters for packagers that
need to expose Git.pm for non-git use, and as explained in the
INSTALL file there's a trivial workaround.
* The scripts themselves will 'use lib' the target directory, but if
INSTLIBDIR is set it overrides it. It doesn't have to be this way,
it could be set in addition to INSTLIBDIR, but my reading of [7] is
that this is the desired behavior.
* We don't build man pages for all of the perl modules as we used to,
only Git(3pm). As discussed on-list[8] that we were building
installed manpages for purely internal APIs like Git::I18N or
private-Error.pm was always a bug anyway, and all the Git::SVN::*
ones say they're internal APIs.
There are apparently external users of Git.pm, but I don't expect
there to be any of the others.
As a side-effect of these general changes the perl documentation
now only installed by install-{doc,man}, not a mere "install" as
before.
1. 5e9637c629 ("i18n: add infrastructure for translating Git with
gettext", 2011-11-18)
2. b1edc53d06 ("Introduce Git.pm (v4)", 2006-06-24)
3. 18b0fc1ce1 ("Git.pm: Kill Git.xs for now", 2006-09-23)
4. f848718a69 ("Make perl/ build procedure ActiveState friendly.",
2006-12-04)
5. ee9be06770 ("perl: detect new files in MakeMaker builds",
2012-07-27)
6. c59c4939c2 ("perl: regenerate perl.mak if perl -V changes",
2017-03-29)
7. 0386dd37b1 ("Makefile: add PERLLIB_EXTRA variable that adds to
default perl path", 2013-11-15)
8. 87bmjjv1pu.fsf@evledraar.booking.com ("Re: [PATCH] Makefile:
replace perl/Makefile.PL with simple make rules"
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
116 lines
2.4 KiB
Perl
116 lines
2.4 KiB
Perl
package Git::I18N;
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use 5.008;
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use strict;
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use warnings;
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BEGIN {
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require Exporter;
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if ($] < 5.008003) {
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*import = \&Exporter::import;
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} else {
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# Exporter 5.57 which supports this invocation was
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# released with perl 5.8.3
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Exporter->import('import');
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}
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}
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our @EXPORT = qw(__ __n N__);
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our @EXPORT_OK = @EXPORT;
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sub __bootstrap_locale_messages {
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our $TEXTDOMAIN = 'git';
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our $TEXTDOMAINDIR = $ENV{GIT_TEXTDOMAINDIR} || '@@LOCALEDIR@@';
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require POSIX;
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POSIX->import(qw(setlocale));
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# Non-core prerequisite module
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require Locale::Messages;
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Locale::Messages->import(qw(:locale_h :libintl_h));
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setlocale(LC_MESSAGES(), '');
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setlocale(LC_CTYPE(), '');
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textdomain($TEXTDOMAIN);
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bindtextdomain($TEXTDOMAIN => $TEXTDOMAINDIR);
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return;
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}
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BEGIN
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{
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# Used by our test script to see if it should test fallbacks or
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# not.
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our $__HAS_LIBRARY = 1;
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local $@;
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eval {
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__bootstrap_locale_messages();
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*__ = \&Locale::Messages::gettext;
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*__n = \&Locale::Messages::ngettext;
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1;
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} or do {
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# Tell test.pl that we couldn't load the gettext library.
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$Git::I18N::__HAS_LIBRARY = 0;
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# Just a fall-through no-op
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*__ = sub ($) { $_[0] };
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*__n = sub ($$$) { $_[2] == 1 ? $_[0] : $_[1] };
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};
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sub N__($) { return shift; }
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}
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1;
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__END__
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=head1 NAME
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Git::I18N - Perl interface to Git's Gettext localizations
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=head1 SYNOPSIS
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use Git::I18N;
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print __("Welcome to Git!\n");
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printf __("The following error occurred: %s\n"), $error;
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printf __n("committed %d file\n", "committed %d files\n", $files), $files;
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=head1 DESCRIPTION
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Git's internal Perl interface to gettext via L<Locale::Messages>. If
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L<Locale::Messages> can't be loaded (it's not a core module) we
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provide stub passthrough fallbacks.
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This is a distilled interface to gettext, see C<info '(gettext)Perl'>
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for the full interface. This module implements only a small part of
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it.
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=head1 FUNCTIONS
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=head2 __($)
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L<Locale::Messages>'s gettext function if all goes well, otherwise our
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passthrough fallback function.
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=head2 __n($$$)
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L<Locale::Messages>'s ngettext function or passthrough fallback function.
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=head2 N__($)
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No-operation that only returns its argument. Use this if you want xgettext to
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extract the text to the pot template but do not want to trigger retrival of the
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translation at run time.
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=head1 AUTHOR
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E<AElig>var ArnfjE<ouml>rE<eth> Bjarmason <avarab@gmail.com>
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=head1 COPYRIGHT
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Copyright 2010 E<AElig>var ArnfjE<ouml>rE<eth> Bjarmason <avarab@gmail.com>
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=cut
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