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#!/usr/bin/perl -w
use strict;
use File::Basename;
use File::Spec;
-d '.git' or die "$0: Not a Git repository";
my $no_push = 0;
$no_push = @ARGV && $ARGV[0] eq '-n';
my $root = dirname($0);
my $application = "$root/application";
my $last = `(cd $root; git ls-files "whats" | tail -1)`;
@ARGV = ("$root/$last");
my $output_file = "GH-PAGES/index.html";
open STDOUT, ">", $output_file or
die "$0: Failed to open $output_file for writing: $!\n";
my %cooking;
my $current;
if (@ARGV) {
while (<>) {
next if /^-------/;
next if m/^\[([^\]]*)\]/;
if (/^[*] (\S+)/) {
$current = $1;
$cooking{$current} = "";
next;
}
next if /^ [+-]/;
next unless $current;
$cooking{$current} .= $_
unless /^\s*$/ && $cooking{$current} eq '';
}
}
my $title = "Currently in the 'pu' branch";
print <<"END";
<html>
<meta http-equiv="content-type" Content="text/html; charset=utf-8">
<title>$title</title>
<style type="text/css" media="all">
body {
width: 600px;
}
</style>
<body>
<h1>$title</h1>
<p>The comment about each topic branch is taken from the latest
<em>What\'s cooking in erlang/otp</em> email and may no longer apply if
the topic branch has been updated.
<ul>
END
my $root_url = "http://github.com/erlang/otp/commit";
foreach (`git log --oneline --first-parent dev..pu`) {
if (/^([\da-f]*) Merge branch '([^\']*)'/) {
my($child,$topic) = ($1,$2);
my $range = "$child^1..$child^2";
my(@revs) = `git rev-list $range`;
my $commits = @revs == 1 ? "1 commit" : scalar(@revs) . " commits";
my $max = 12;
my $diff_range = "$child^1...$child^2";
my $apps = `$application $diff_range`;
chomp $apps;
system "git", "show", "-s", "--date=short",
qq[--format=<li><a href="$root_url/%H">$topic</a> ($apps):],
"$child";
print "<ul>\n";
my $format = qq[<li><a href="$root_url/%H">%s</a></li>];
system "git", "--no-pager", "log", "-n", $max,
"--format=$format", $range;
print ".\n.\n\.\n" if @revs > $max;
print "</ul>\n";
my @ws = `git diff --check $diff_range`;
if (@ws) {
my $n = @ws / 2;
print "<p>\n";
print qq[<font color="red">This topic branch introduces ];
if ($n == 1) {
print "1 line ";
} else {
print "$n lines ";
}
print "with whitespace errors.</font>\n";
}
my $text = $cooking{$topic};
unless (defined $text) {
print "<p><i>New topic branch</i>\n<p>\n";
} else {
$text =~ s/\n\n/$&<p>/g;
print "<p>$text\n" if $text ne '';
print "<p>" if $text eq '';
}
print "</li>\n";
}
}
print "</ul>\n";
print "</body>\n";
print "</html>\n";
close STDOUT;
system qq(cd GH-PAGES; git commit --amend -m "Update index.html" index.html >/dev/null);
system qq(cd GH-PAGES; git push erlang +gh-pages)
unless $no_push;
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