X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=make_patchnum.pl;h=ac328080710eaab0c5f5439b793e568329722d51;hb=842c41230043ce99d4bf7b2c79aed85ce2908e89;hp=95b8db61377c1aae809d0ed30337d1ee0ed23c25;hpb=eb5c076f82ef750418ce94e05feaaccc9df9696e;p=p5sagit%2Fp5-mst-13.2.git diff --git a/make_patchnum.pl b/make_patchnum.pl index 95b8db6..ac32808 100644 --- a/make_patchnum.pl +++ b/make_patchnum.pl @@ -13,29 +13,58 @@ make_patchnum.pl - make patchnum perl make_patchnum.pl +=head1 DESCRIPTION + This program creates the files holding the information about locally applied patches to the source code. The created -files are C<.patchnum>, C and C. +files are C and C. + +=head2 C + +Contains status information from git in a form meant to be processed +by the tied hash logic of Config.pm. It is actually optional, +although -V:git.\* will be uninformative without it. + +C contains similar information in a C header file +format, designed to be used by patchlevel.h. This file is obtained +from stock_git_version.h if miniperl is not available, and then +later on replaced by the version created by this script. -C<.patchnum> contains ??? +=head1 AUTHOR -C contains the configuration of git for -this branch. +Yves Orton, Kenichi Ishigaki, Max Maischein -C contains the local changes that haven't been -synchronized with the remote repository as configured with -C<< git configure branch..remote >> +=head1 COPYRIGHT + +Same terms as Perl itself. =cut +# from a -Dmksymlink target dir, I need to cd to the git-src tree to +# use git (like script does). Presuming that's not unique, one fix is +# to follow Configure's symlink-path to run git. Maybe GIT_DIR or +# path-args can solve it, if so we should advise here, I tried only +# very briefly ('cd -' works too). + +my ($subcd, $srcdir); +our $opt_v = scalar grep $_ eq '-v', @ARGV; + BEGIN { my $root="."; + # test 1st to see if we're a -Dmksymlinks target dir + $subcd = ''; + $srcdir = $root; + if (-l "./Configure") { + $srcdir = readlink("./Configure"); + $srcdir =~ s/Configure//; + $subcd = "cd $srcdir &&"; # activate backtick fragment + } while (!-e "$root/perl.c" and length($root)<100) { if ($root eq '.') { - $root=".."; - } else { - $root.="/.."; - } + $root=".."; + } else { + $root.="/.."; + } } die "Can't find toplevel" if !-e "$root/perl.c"; sub path_to { "$root/$_[0]" } # use $_[0] if this'd be placed in toplevel. @@ -45,7 +74,7 @@ sub read_file { my $file = path_to(@_); return "" unless -e $file; open my $fh, '<', $file - or die "Failed to open for read '$file':$!"; + or die "Failed to open for read '$file':$!"; return do { local $/; <$fh> }; } @@ -53,20 +82,26 @@ sub write_file { my ($file, $content) = @_; $file= path_to($file); open my $fh, '>', $file - or die "Failed to open for write '$file':$!"; + or die "Failed to open for write '$file':$!"; print $fh $content; close $fh; } sub backtick { + # only for git. If we're in a -Dmksymlinks build-dir, we need to + # cd to src so git will work . Probably a better way. my $command = shift; if (wantarray) { - my @result= `$command`; + my @result= `$subcd $command`; + #warn "$subcd $command: \$?=$?\n" if $?; + print "#> $subcd $command ->\n @result\n" if !$? and $opt_v; chomp @result; return @result; } else { - my $result= `$command`; + my $result= `$subcd $command`; $result="" if ! defined $result; + warn "$subcd $command: \$?=$?\n" if $?; + print "#> $subcd $command ->\n $result\n" if !$? and $opt_v; chomp $result; return $result; } @@ -76,39 +111,48 @@ sub write_files { my %content= map { /WARNING: '([^']+)'/ || die "Bad mojo!"; $1 => $_ } @_; my @files= sort keys %content; my $files= join " and ", map { "'$_'" } @files; - foreach my $file (@files) { + foreach my $file (@files) { if (read_file($file) ne $content{$file}) { print "Updating $files\n"; write_file($_,$content{$_}) for @files; return 1; - } + } } print "Reusing $files\n"; return 0; } -my $unpushed_commits = '/*no-op*/'; +my $unpushed_commits = ' '; my ($read, $branch, $snapshot_created, $commit_id, $describe)= ("") x 5; -my ($changed, $extra_info, $commit_title, $new_patchnum, $status)= ("") x 5; +my ($changed, $extra_info, $commit_title)= ("") x 3; + if (my $patch_file= read_file(".patch")) { ($branch, $snapshot_created, $commit_id, $describe) = split /\s+/, $patch_file; $extra_info = "git_snapshot_date='$snapshot_created'"; $commit_title = "Snapshot of:"; } -elsif (-d path_to('.git')) { +elsif (-d "$srcdir/.git") { # git branch | awk 'BEGIN{ORS=""} /\*/ { print $2 }' - ($branch) = map { /\* ([^(]\S*)/ ? $1 : () } backtick('git branch'); + ($branch) = map { /\* ([^(]\S*)/ ? $1 : () } backtick("git branch"); my ($remote,$merge); if (length $branch) { - $merge= backtick("git config branch.$branch.merge"); + $merge= backtick("git config branch.$branch.merge"); + $merge = "" unless $? == 0; $merge =~ s!^refs/heads/!!; $remote= backtick("git config branch.$branch.remote"); + $remote = "" unless $? == 0; } $commit_id = backtick("git rev-parse HEAD"); $describe = backtick("git describe"); my $commit_created = backtick(qq{git log -1 --pretty="format:%ci"}); - $new_patchnum = "describe: $describe"; $extra_info = "git_commit_date='$commit_created'"; + backtick("git diff --no-ext-diff --quiet --exit-code"); + $changed = $?; + unless ($changed) { + backtick("git diff-index --cached --quiet HEAD --"); + $changed = $?; + } + if (length $branch && length $remote) { # git cherry $remote/$branch | awk 'BEGIN{ORS=","} /\+/ {print $2}' | sed -e 's/,$//' my $unpushed_commit_list = @@ -128,25 +172,21 @@ git_unpushed='$unpushed_commit_list'"; } } if ($changed) { - $changed = 'true'; $commit_title = "Derived from:"; - $status='"uncommitted-changes"' - } else { - $status='/*clean-working-directory*/' } $commit_title ||= "Commit id:"; } # we extract the filename out of the warning header, so dont mess with that -exit(write_files(<<"EOF_HEADER", <<"EOF_CONFIG")); +write_files(<<"EOF_HEADER", <<"EOF_CONFIG"); /************************************************************************** * WARNING: 'git_version.h' is automatically generated by make_patchnum.pl * DO NOT EDIT DIRECTLY - edit make_patchnum.pl instead ***************************************************************************/ -#define PERL_GIT_UNCOMMITTED_CHANGES $status -#define PERL_PATCHNUM "$describe" +@{[$describe ? "#define PERL_PATCHNUM \"$describe\"" : ()]} #define PERL_GIT_UNPUSHED_COMMITS\t\t\\ $unpushed_commits/*leave-this-comment*/ +@{[$changed ? "#define PERL_GIT_UNCOMMITTED_CHANGES" : ()]} EOF_HEADER ###################################################################### # WARNING: 'lib/Config_git.pl' is generated by make_patchnum.pl @@ -161,4 +201,4 @@ git_commit_id_title='$commit_title' $extra_info ENDOFGIT EOF_CONFIG -# ex: set ts=4 sts=4 et ft=perl: +# ex: set ts=8 sts=4 sw=4 et ft=perl: