Package: ikiwiki
Version: 1.21
Severity: wishlist

Attached is rudimentary tla support for ikiwiki.
#!/usr/bin/perl
# For Arch support.

use warnings;
use strict;
use IkiWiki;
use POSIX qw(setlocale LC_CTYPE);

package IkiWiki;

my $tla_webcommit=qr/^web commit (by (\w+)|from (\d+\.\d+\.\d+\.\d+)):?(.*)/;

sub rcs_update () { #{{{
    if (-d "$config{srcdir}/{arch}") {
	if (system("tla replay -d $config{srcdir} >/dev/null") != 0) {
	    warn("tla replay failed\n");
	}
    }
} #}}}

sub rcs_prepedit ($) { #{{{
# Prepares to edit a file under revision control. Returns a token
# that must be passed into rcs_commit when the file is ready
# for committing.
# The file is relative to the srcdir.
    my $file=shift;

    if (-d "$config{srcdir}/{arch}") {
# For Arch, return the tree-id of archive when
# editing begins.
	my $rev=`tla tree-id $config{srcdir}`;
	return defined $rev ? $rev : "";
    }
} #}}}

sub rcs_commit ($$$) { #{{{
# Tries to commit the page; returns undef on _success_ and
# a version of the page with the rcs's conflict markers on failure.
# The file is relative to the srcdir.
    my $file=shift;
    my $message=shift;
    my $rcstoken=shift;

    if (-d "$config{srcdir}/{arch}") {
# Check to see if the page has been changed by someone
# else since rcs_prepedit was called.
	my ($oldrev)=$rcstoken=~/^([EMAIL PROTECTED]/._-]+)$/; # untaint
	    my $rev=`tla tree-id $config{srcdir}`;
	if (defined $rev && defined $oldrev && $rev ne $oldrev) {
# Merge their changes into the file that we've
# changed.
		if (system("tla", "update", "-d",
			    "$config{srcdir}/$file") != 0) {
		    warn("tla update failed\n");
		}
	}

	if (system("tla commit -L'".possibly_foolish_untaint($message)."' -d $config{srcdir} >/dev/null") != 0) {
	    my $conflict=readfile("$config{srcdir}/$file");
	    if (system("tla", "undo", "--quiet", "-d", "$config{srcdir}") != 0) {
		warn("tla undo failed\n");
	}
	return $conflict;
	}
    }
    return undef # success
} #}}}

sub rcs_add ($) { #{{{
# filename is relative to the root of the srcdir
    my $file=shift;

    if (-d "$config{srcdir}/{arch}") {

	if (system("tla add $config{srcdir}/$file >/dev/null") != 0) {
	    warn("tla add failed\n");
	}
    }
} #}}}

sub rcs_recentchanges ($) {
    my $num=shift;
    my @ret;
    my $i = 0;

    return unless -d "$config{srcdir}/{arch}";

    eval q{use CGI 'escapeHTML'};
    eval q{use Date::Parse};
    eval q{use Time::Duration};
    eval q{use Mail::Header};

    my $logs = `tla logs -d $config{srcdir}`;
    my @changesets = reverse split(/\n/, $logs);

    for($i=0;$i<$num && $i<$#changesets;$i++) {
	my ($change)=$changesets[$i]=~/^([EMAIL PROTECTED]/._-]+)$/; # untaint

	open(LOG, "tla cat-log -d $config{srcdir} $change|");
	my $head = new Mail::Header \*LOG;
	close(LOG);

	my $rev = $head->get("Revision");
	my $summ = $head->get("Summary");
	my $newfiles = $head->get("New-files");
	my $modfiles = $head->get("Modified-files");
	my $user = $head->get("Creator");

	my @paths = grep {!/^.*\/\.arch-ids\/.*\.id$/} split(/ /,
		"$newfiles $modfiles");

	my $sdate = $head->get("Standard-date");
	my $when=concise(ago(time - str2time($sdate, 'UTC')));

	my $committype = "web";
	if (defined $summ && $summ =~ /$tla_webcommit/) {
	    $user = defined $2 ? "$2" : "$3";
	    $summ = $4;
	}
	else {
	    $committype="tla";
	}

	my @message;
        push @message, { line => escapeHTML($summ) };
	$user = escapeHTML($user);

	my @pages;

	foreach my $file (@paths) {
	    my $diffurl=$config{diffurl};
	    $diffurl=~s/\[\[file\]\]/$file/g;
	    $diffurl=~s/\[\[rev\]\]/$change/g;
	    push @pages, {
		link => htmllink("", "", pagename($file), 1),
		     diffurl => $diffurl,
	    } if length $file;
	}
	push @ret, { rev => $change,
	    user => htmllink("", "", $user, 1),
	    committype => $committype,
	    when => $when,
	    message => [EMAIL PROTECTED],
	    pages => [EMAIL PROTECTED],
	} if @pages;

	last if ($i == $num);
    }

    return @ret;
}

sub rcs_notify () { #{{{
    if (! exists $ENV{REV}) {
	error("REV is not set, not running from tla post-commit hook, cannot send notifications");
    }
    my $rev=int(possibly_foolish_untaint($ENV{REV}));

    eval q{use Mail::Header};

    my $log=`cat $ENV{ARCH_LOG}`;

    open(LOG, $ENV{"ARCH_LOG"});
    my $head = new Mail::Header \*LOG;
    close(LOG);

    my $message = $head->get("Summary");
    my $user = $head->get("Creator");

    my $newfiles = $head->get("New-files");
    my $modfiles = $head->get("Modified-files");

    my @changed_pages = grep {!/^.*\/\.arch-ids\/.*\.id$/} split(/ /,
	    "$newfiles $modfiles");

    if ($message =~ /$tla_webcommit/) {
	$user=defined $2 ? "$2" : "$3";
	$message=$4;
    }

    require IkiWiki::UserInfo;
    my @email_recipients=commit_notify_list($user, @changed_pages);
    if (@email_recipients) {
# TODO: if a commit spans multiple pages, this will send
# subscribers a diff that might contain pages they did not
# sign up for. Should separate the diff per page and
# reassemble into one mail with just the pages subscribed to.
        my $logs = `tla logs -d $config{srcdir}`;
        my @changesets = reverse split(/\n/, $logs);
	my $i;

	for($i=0;$i<$#changesets;$i++) {
	last if $changesets[$i] eq $rev;
	}

	my $revminusone = $changesets[$i+1];
	my $diff=`tla diff -d $ENV{ARCH_TREE_ROOT} $revminusone`;

	my $subject="$config{wikiname} update of ";
	if (@changed_pages > 2) {
	    $subject.="$changed_pages[0] $changed_pages[1] etc";
	}
	else {
	    $subject.=join(" ", @changed_pages);
	}
	$subject.=" by $user";

	my $template=template("notifymail.tmpl");
	$template->param(
		wikiname => $config{wikiname},
		diff => $diff,
		user => $user,
		message => $message,
		);

	eval q{use Mail::Sendmail};
	foreach my $email (@email_recipients) {
	    sendmail(
		    To => $email,
		    From => "$config{wikiname} <$config{adminemail}>",
		    Subject => $subject,
		    Message => $template->output,
		    ) or error("Failed to send update notification mail");
	}
    }
} #}}}

sub rcs_getctime ($) { #{{{
    my $file=shift;
    eval q{use Date::Parse};
    eval q{use Mail::Header};

    my $logs = `tla logs -d $config{srcdir}`;
    my @changesets = reverse split(/\n/, $logs);
    my $sdate;

    for(my $i=0;$i<$#changesets;$i++) {
	my $change = $changesets[$i];

	open(LOG, "tla cat-log -d $config{srcdir} $change|");
	my $head = new Mail::Header \*LOG;
	close(LOG);

	$sdate = $head->get("Standard-date");
	my $newfiles = $head->get("New-files");

	my ($lastcreation) = grep {/^$file$/} split(/ /, "$newfiles");
	last if defined($lastcreation);
    }

    my $date=str2time($sdate, 'UTC');
    debug("found ctime ".localtime($date)." for $file");
    return $date;
} #}}}

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