git: Do the revert operation in a secondary working tree

[git.ikiwiki.info.git] / IkiWiki / Plugin / monotone.pm

diff --git a/IkiWiki/Plugin/monotone.pm b/IkiWiki/Plugin/monotone.pm
index bdc6ee786e18bad7e4d9b2662df5938ebe2b7131..105627814b793fa5ff868ceff7c07e00c3dd9078 100644 (file)
--- a/IkiWiki/Plugin/monotone.pm
+++ b/IkiWiki/Plugin/monotone.pm
@@ -7,10 +7,12 @@ use IkiWiki;
 use Monotone;
 use Date::Parse qw(str2time);
 use Date::Format qw(time2str);
 use Monotone;
 use Date::Parse qw(str2time);
 use Date::Format qw(time2str);

+use URI::Escape q{uri_escape_utf8};

 
 my $sha1_pattern = qr/[0-9a-fA-F]{40}/; # pattern to validate sha1sums
 
 my $sha1_pattern = qr/[0-9a-fA-F]{40}/; # pattern to validate sha1sums

+my $mtn_version = undef;

 
 

-sub import { #{{{
+sub import {

        hook(type => "checkconfig", id => "monotone", call => \&checkconfig);
        hook(type => "getsetup", id => "monotone", call => \&getsetup);
        hook(type => "rcs", id => "rcs_update", call => \&rcs_update);
        hook(type => "checkconfig", id => "monotone", call => \&checkconfig);
        hook(type => "getsetup", id => "monotone", call => \&getsetup);
        hook(type => "rcs", id => "rcs_update", call => \&rcs_update);


@@ -23,9 +25,10 @@ sub import { #{{{
        hook(type => "rcs", id => "rcs_recentchanges", call => \&rcs_recentchanges);
        hook(type => "rcs", id => "rcs_diff", call => \&rcs_diff);
        hook(type => "rcs", id => "rcs_getctime", call => \&rcs_getctime);
        hook(type => "rcs", id => "rcs_recentchanges", call => \&rcs_recentchanges);
        hook(type => "rcs", id => "rcs_diff", call => \&rcs_diff);
        hook(type => "rcs", id => "rcs_getctime", call => \&rcs_getctime);

-} #}}}
+       hook(type => "rcs", id => "rcs_getmtime", call => \&rcs_getmtime);
+}

 
 

-sub checkconfig () { #{{{
+sub checkconfig () {

        if (!defined($config{mtnrootdir})) {
                $config{mtnrootdir} = $config{srcdir};
        }
        if (!defined($config{mtnrootdir})) {
                $config{mtnrootdir} = $config{srcdir};
        }


@@ -39,32 +42,36 @@ sub checkconfig () { #{{{
                exec("mtn", "version") || error("mtn version failed to run");
        }
 
                exec("mtn", "version") || error("mtn version failed to run");
        }
 

-       my $version=undef;

        while (<MTN>) {
        while (<MTN>) {

-               if (/^monotone (\d+\.\d+) /) {
-                       $version=$1;
+               if (/^monotone (\d+\.\d+)(?:(?:\.\d+){0,2}|dev)? /) {
+                       $mtn_version=$1;

                }
        }
 
        close MTN || debug("mtn version exited $?");
 
                }
        }
 
        close MTN || debug("mtn version exited $?");
 

-       if (!defined($version)) {
+       if (!defined($mtn_version)) {

                error("Cannot determine monotone version");
        }
                error("Cannot determine monotone version");
        }

-       if ($version < 0.38) {
-               error("Monotone version too old, is $version but required 0.38");
+       if ($mtn_version < 0.38) {
+               error("Monotone version too old, is $mtn_version but required 0.38");

        }
 
        }
 

-       if (length $config{mtn_wrapper}) {
+       if (defined $config{mtn_wrapper} && length $config{mtn_wrapper}) {

                push @{$config{wrappers}}, {
                        wrapper => $config{mtn_wrapper},
                        wrappermode => (defined $config{mtn_wrappermode} ? $config{mtn_wrappermode} : "06755"),
                };
        }
                push @{$config{wrappers}}, {
                        wrapper => $config{mtn_wrapper},
                        wrappermode => (defined $config{mtn_wrappermode} ? $config{mtn_wrappermode} : "06755"),
                };
        }

-} #}}}
+}

 
 

-sub getsetup () { #{{{
+sub getsetup () {

        return
        return

+               plugin => {
+                       safe => 0, # rcs plugin
+                       rebuild => undef,
+                       section => "rcs",
+               },

                mtn_wrapper => {
                        type => "string",
                        example => "/srv/mtn/wiki/_MTN/ikiwiki-netsync-hook",
                mtn_wrapper => {
                        type => "string",
                        example => "/srv/mtn/wiki/_MTN/ikiwiki-netsync-hook",


@@ -113,9 +120,9 @@ sub getsetup () { #{{{
                        safe => 0, # path
                        rebuild => 0,
                },
                        safe => 0, # path
                        rebuild => 0,
                },

-} #}}}
+}

 
 

-sub get_rev () { #{{{
+sub get_rev () {

        my $sha1 = `mtn --root=$config{mtnrootdir} automate get_base_revision_id`;
 
        ($sha1) = $sha1 =~ m/($sha1_pattern)/; # sha1 is untainted now
        my $sha1 = `mtn --root=$config{mtnrootdir} automate get_base_revision_id`;
 
        ($sha1) = $sha1 =~ m/($sha1_pattern)/; # sha1 is untainted now


@@ -124,9 +131,9 @@ sub get_rev () { #{{{
        }
 
        return $sha1;
        }
 
        return $sha1;

-} #}}}
+}

 
 

-sub get_rev_auto ($) { #{{{
+sub get_rev_auto ($) {

        my $automator=shift;
 
        my @results = $automator->call("get_base_revision_id");
        my $automator=shift;
 
        my @results = $automator->call("get_base_revision_id");


@@ -138,9 +145,9 @@ sub get_rev_auto ($) { #{{{
        }
 
        return $sha1;
        }
 
        return $sha1;

-} #}}}
+}

 
 

-sub mtn_merge ($$$$) { #{{{
+sub mtn_merge ($$$$) {

        my $leftRev=shift;
        my $rightRev=shift;
        my $branch=shift;
        my $leftRev=shift;
        my $rightRev=shift;
        my $branch=shift;


@@ -168,9 +175,9 @@ sub mtn_merge ($$$$) { #{{{
        debug("merged $leftRev, $rightRev to make $mergeRev");
 
        return $mergeRev;
        debug("merged $leftRev, $rightRev to make $mergeRev");
 
        return $mergeRev;

-} #}}}
+}

 
 

-sub commit_file_to_new_rev ($$$$$$$$) { #{{{
+sub commit_file_to_new_rev ($$$$$$$$) {

        my $automator=shift;
        my $wsfilename=shift;
        my $oldFileID=shift;
        my $automator=shift;
        my $wsfilename=shift;
        my $oldFileID=shift;


@@ -215,16 +222,16 @@ sub commit_file_to_new_rev ($$$$$$$$) { #{{{
        
        debug("Added certs for rev: $newRevID");
        return $newRevID;
        
        debug("Added certs for rev: $newRevID");
        return $newRevID;

-} #}}}
+}

 
 

-sub read_certs ($$) { #{{{
+sub read_certs ($$) {

        my $automator=shift;
        my $rev=shift;
        my @results = $automator->call("certs", $rev);
        my @ret;
 
        my $line = $results[0];
        my $automator=shift;
        my $rev=shift;
        my @results = $automator->call("certs", $rev);
        my @ret;
 
        my $line = $results[0];

-       while ($line =~ m/\s+key\s"(.*?)"\nsignature\s"(ok|bad|unknown)"\n\s+name\s"(.*?)"\n\s+value\s"(.*?)"\n\s+trust\s"(trusted|untrusted)"\n/sg) {
+       while ($line =~ m/\s+key\s["\[](.*?)[\]"]\nsignature\s"(ok|bad|unknown)"\n\s+name\s"(.*?)"\n\s+value\s"(.*?)"\n\s+trust\s"(trusted|untrusted)"\n/sg) {

                push @ret, {
                        key => $1,
                        signature => $2,
                push @ret, {
                        key => $1,
                        signature => $2,


@@ -235,9 +242,9 @@ sub read_certs ($$) { #{{{
        }
 
        return @ret;
        }
 
        return @ret;

-} #}}}
+}

 
 

-sub get_changed_files ($$) { #{{{
+sub get_changed_files ($$) {

        my $automator=shift;
        my $rev=shift;
        
        my $automator=shift;
        my $rev=shift;
        


@@ -246,9 +253,20 @@ sub get_changed_files ($$) { #{{{
 
        my @ret;
        my %seen = ();
 
        my @ret;
        my %seen = ();

-       
+
+       # we need to strip off the relative path to the source dir
+       # because monotone outputs all file paths absolute according
+       # to the workspace root
+       my $rel_src_dir = $config{'srcdir'};
+       $rel_src_dir =~ s/^\Q$config{'mtnrootdir'}\E\/?//;
+       $rel_src_dir .= "/" if length $rel_src_dir;
+

        while ($changes =~ m/\s*(add_file|patch|delete|rename)\s"(.*?)(?<!\\)"\n/sg) {
                my $file = $2;
        while ($changes =~ m/\s*(add_file|patch|delete|rename)\s"(.*?)(?<!\\)"\n/sg) {
                my $file = $2;

+               # ignore all file changes outside the source dir
+               next unless $file =~ m/^\Q$rel_src_dir\E/;
+               $file =~ s/^\Q$rel_src_dir\E//;
+        

                # don't add the same file multiple times
                if (! $seen{$file}) {
                        push @ret, $file;
                # don't add the same file multiple times
                if (! $seen{$file}) {
                        push @ret, $file;


@@ -257,9 +275,9 @@ sub get_changed_files ($$) { #{{{
        }
        
        return @ret;
        }
        
        return @ret;

-} #}}}
+}

 
 

-sub rcs_update () { #{{{
+sub rcs_update () {

        chdir $config{srcdir}
            or error("Cannot chdir to $config{srcdir}: $!");
 
        chdir $config{srcdir}
            or error("Cannot chdir to $config{srcdir}: $!");
 


@@ -274,9 +292,9 @@ sub rcs_update () { #{{{
        if (system("mtn", "--root=$config{mtnrootdir}", "update", "--quiet") != 0) {
                debug("monotone update failed");
        }
        if (system("mtn", "--root=$config{mtnrootdir}", "update", "--quiet") != 0) {
                debug("monotone update failed");
        }

-} #}}}
+}

 
 

-sub rcs_prepedit ($) { #{{{
+sub rcs_prepedit ($) {

        my $file=shift;
 
        chdir $config{srcdir}
        my $file=shift;
 
        chdir $config{srcdir}


@@ -285,33 +303,35 @@ sub rcs_prepedit ($) { #{{{
        # For monotone, return the revision of the file when
        # editing begins.
        return get_rev();
        # For monotone, return the revision of the file when
        # editing begins.
        return get_rev();

-} #}}}
+}

 
 

-sub rcs_commit ($$$;$$) { #{{{
+sub commitauthor (@) {
+       my %params=@_;
+
+       if (defined $params{session}) {
+               if (defined $params{session}->param("name")) {
+                       return "Web user: " . $params{session}->param("name");
+               }
+               elsif (defined $params{session}->remote_addr()) {
+                       return "Web IP: " . $params{session}->remote_addr();
+               }
+       }
+       return "Web: Anonymous";
+}
+
+
+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.
        # 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;
-       my $user=shift;
-       my $ipaddr=shift;
-       my $author;
+       my %params=@_;

 
 

-       if (defined $user) {
-               $author="Web user: " . $user;
-       }
-       elsif (defined $ipaddr) {
-               $author="Web IP: " . $ipaddr;
-       }
-       else {
-               $author="Web: Anonymous";
-       }
+       my $author=IkiWiki::possibly_foolish_untaint(commitauthor(%params)),

 
        chdir $config{srcdir}
            or error("Cannot chdir to $config{srcdir}: $!");
 
 
        chdir $config{srcdir}
            or error("Cannot chdir to $config{srcdir}: $!");
 

-       my ($oldrev)= $rcstoken=~ m/^($sha1_pattern)$/; # untaint
+       my ($oldrev) = $params{token} =~ m/^($sha1_pattern)$/; # untaint

        my $rev = get_rev();
        if (defined $rev && defined $oldrev && $rev ne $oldrev) {
                my $automator = Monotone->new();
        my $rev = get_rev();
        if (defined $rev && defined $oldrev && $rev ne $oldrev) {
                my $automator = Monotone->new();


@@ -320,8 +340,8 @@ sub rcs_commit ($$$;$$) { #{{{
                # Something has been committed, has this file changed?
                my ($out, $err);
                $automator->setOpts("r", $oldrev, "r", $rev);
                # Something has been committed, has this file changed?
                my ($out, $err);
                $automator->setOpts("r", $oldrev, "r", $rev);

-               ($out, $err) = $automator->call("content_diff", $file);
-               debug("Problem committing $file") if ($err ne "");
+               ($out, $err) = $automator->call("content_diff", $params{file});
+               debug("Problem committing $params{file}") if ($err ne "");

                my $diff = $out;
                
                if ($diff) {
                my $diff = $out;
                
                if ($diff) {


@@ -330,11 +350,11 @@ sub rcs_commit ($$$;$$) { #{{{
                        #
                        # first get the contents
                        debug("File changed: forming branch");
                        #
                        # first get the contents
                        debug("File changed: forming branch");

-                       my $newfile=readfile("$config{srcdir}/$file");
+                       my $newfile=readfile("$config{srcdir}/$params{file}");

                        
                        # then get the old content ID from the diff
                        
                        # then get the old content ID from the diff

-                       if ($diff !~ m/^---\s$file\s+($sha1_pattern)$/m) {
-                               error("Unable to find previous file ID for $file");
+                       if ($diff !~ m/^---\s$params{file}\s+($sha1_pattern)$/m) {
+                               error("Unable to find previous file ID for $params{file}");

                        }
                        my $oldFileID = $1;
 
                        }
                        my $oldFileID = $1;
 


@@ -345,13 +365,13 @@ sub rcs_commit ($$$;$$) { #{{{
                        my $branch = $1;
 
                        # then put the new content into the DB (and record the new content ID)
                        my $branch = $1;
 
                        # then put the new content into the DB (and record the new content ID)

-                       my $newRevID = commit_file_to_new_rev($automator, $file, $oldFileID, $newfile, $oldrev, $branch, $author, $message);
+                       my $newRevID = commit_file_to_new_rev($automator, $params{file}, $oldFileID, $newfile, $oldrev, $branch, $author, $params{message});

 
                        $automator->close();
 
                        # if we made it to here then the file has been committed... revert the local copy
 
                        $automator->close();
 
                        # if we made it to here then the file has been committed... revert the local copy

-                       if (system("mtn", "--root=$config{mtnrootdir}", "revert", $file) != 0) {
-                               debug("Unable to revert $file after merge on conflicted commit!");
+                       if (system("mtn", "--root=$config{mtnrootdir}", "revert", $params{file}) != 0) {
+                               debug("Unable to revert $params{file} after merge on conflicted commit!");

                        }
                        debug("Divergence created! Attempting auto-merge.");
 
                        }
                        debug("Divergence created! Attempting auto-merge.");
 


@@ -400,7 +420,7 @@ sub rcs_commit ($$$;$$) { #{{{
                                # for cleanup note, this relies on the fact
                                # that ikiwiki seems to call rcs_prepedit()
                                # again after we return
                                # for cleanup note, this relies on the fact
                                # that ikiwiki seems to call rcs_prepedit()
                                # again after we return

-                               return readfile("$config{srcdir}/$file");
+                               return readfile("$config{srcdir}/$params{file}");

                        }
                        return undef;
                }
                        }
                        return undef;
                }


@@ -412,11 +432,12 @@ sub rcs_commit ($$$;$$) { #{{{
 
        if (system("mtn", "--root=$config{mtnrootdir}", "commit", "--quiet",
                   "--author", $author, "--key", $config{mtnkey}, "-m",
 
        if (system("mtn", "--root=$config{mtnrootdir}", "commit", "--quiet",
                   "--author", $author, "--key", $config{mtnkey}, "-m",

-                  IkiWiki::possibly_foolish_untaint($message), $file) != 0) {
+                  IkiWiki::possibly_foolish_untaint($params{message}),
+                  $params{file}) != 0) {

                debug("Traditional commit failed! Returning data as conflict.");
                debug("Traditional commit failed! Returning data as conflict.");

-               my $conflict=readfile("$config{srcdir}/$file");
+               my $conflict=readfile("$config{srcdir}/$params{file}");

                if (system("mtn", "--root=$config{mtnrootdir}", "revert",
                if (system("mtn", "--root=$config{mtnrootdir}", "revert",

-                          "--quiet", $file) != 0) {
+                          "--quiet", $params{file}) != 0) {

                        debug("monotone revert failed");
                }
                return $conflict;
                        debug("monotone revert failed");
                }
                return $conflict;


@@ -430,39 +451,28 @@ sub rcs_commit ($$$;$$) { #{{{
        }
 
        return undef # success
        }
 
        return undef # success

-} #}}}
+}

 
 

-sub rcs_commit_staged ($$$) {
+sub rcs_commit_staged (@) {

        # Commits all staged changes. Changes can be staged using rcs_add,
        # rcs_remove, and rcs_rename.
        # Commits all staged changes. Changes can be staged using rcs_add,
        # rcs_remove, and rcs_rename.

-       my ($message, $user, $ipaddr)=@_;
-       
+       my %params=@_;
+

        # Note - this will also commit any spurious changes that happen to be
        # lying around in the working copy.  There shouldn't be any, but...
        
        chdir $config{srcdir}
            or error("Cannot chdir to $config{srcdir}: $!");
 
        # Note - this will also commit any spurious changes that happen to be
        # lying around in the working copy.  There shouldn't be any, but...
        
        chdir $config{srcdir}
            or error("Cannot chdir to $config{srcdir}: $!");
 

-       my $author;
-
-       if (defined $user) {
-               $author="Web user: " . $user;
-       }
-       elsif (defined $ipaddr) {
-               $author="Web IP: " . $ipaddr;
-       }
-       else {
-               $author="Web: Anonymous";
-       }
-

        if (system("mtn", "--root=$config{mtnrootdir}", "commit", "--quiet",
        if (system("mtn", "--root=$config{mtnrootdir}", "commit", "--quiet",

-                  "--author", $author, "--key", $config{mtnkey}, "-m",
-                  IkiWiki::possibly_foolish_untaint($message)) != 0) {
+                  "--author", IkiWiki::possibly_foolish_untaint(commitauthor(%params)),
+                  "--key", $config{mtnkey}, "-m",
+                  IkiWiki::possibly_foolish_untaint($params{message})) != 0) {

                error("Monotone commit failed");
        }
 }
 
                error("Monotone commit failed");
        }
 }
 

-sub rcs_add ($) { #{{{
+sub rcs_add ($) {

        my $file=shift;
 
        chdir $config{srcdir}
        my $file=shift;
 
        chdir $config{srcdir}


@@ -472,9 +482,9 @@ sub rcs_add ($) { #{{{
                   $file) != 0) {
                error("Monotone add failed");
        }
                   $file) != 0) {
                error("Monotone add failed");
        }

-} #}}}
+}

 
 

-sub rcs_remove ($) { # {{{
+sub rcs_remove ($) {

        my $file = shift;
 
        chdir $config{srcdir}
        my $file = shift;
 
        chdir $config{srcdir}


@@ -491,9 +501,9 @@ sub rcs_remove ($) { # {{{
                   $file) != 0) {
                error("Monotone remove failed");
        }
                   $file) != 0) {
                error("Monotone remove failed");
        }

-} #}}}
+}

 
 

-sub rcs_rename ($$) { # {{{
+sub rcs_rename ($$) {

        my ($src, $dest) = @_;
 
        chdir $config{srcdir}
        my ($src, $dest) = @_;
 
        chdir $config{srcdir}


@@ -503,9 +513,9 @@ sub rcs_rename ($$) { # {{{
                   $src, $dest) != 0) {
                error("Monotone rename failed");
        }
                   $src, $dest) != 0) {
                error("Monotone rename failed");
        }

-} #}}}
+}

 
 

-sub rcs_recentchanges ($) { #{{{
+sub rcs_recentchanges ($) {

        my $num=shift;
        my @ret;
 
        my $num=shift;
        my @ret;
 


@@ -521,13 +531,12 @@ sub rcs_recentchanges ($) { #{{{
        my $child = open(MTNLOG, "-|");
        if (! $child) {
                exec("mtn", "log", "--root=$config{mtnrootdir}", "--no-graph",
        my $child = open(MTNLOG, "-|");
        if (! $child) {
                exec("mtn", "log", "--root=$config{mtnrootdir}", "--no-graph",

-                    "--brief") || error("mtn log failed to run");
+                    "--brief", "--last=$num") || error("mtn log failed to run");

        }
 
        }
 

-       while (($num >= 0) and (my $line = <MTNLOG>)) {
+       while (my $line = <MTNLOG>) {

                if ($line =~ m/^($sha1_pattern)/) {
                        push @revs, $1;
                if ($line =~ m/^($sha1_pattern)/) {
                        push @revs, $1;

-                       $num -= 1;

                }
        }
        close MTNLOG || debug("mtn log exited $?");
                }
        }
        close MTNLOG || debug("mtn log exited $?");


@@ -555,8 +564,9 @@ sub rcs_recentchanges ($) { #{{{
                                        # from the changelog
                                        if ($cert->{key} eq $config{mtnkey}) {
                                                $committype = "web";
                                        # from the changelog
                                        if ($cert->{key} eq $config{mtnkey}) {
                                                $committype = "web";

-                                       } else {
-                                               $committype = "monotone";
+                                       }
+                                       else {
+                                               $committype = "mtn";

                                        }
                                } elsif ($cert->{name} eq "date") {
                                        $when = str2time($cert->{value}, 'UTC');
                                        }
                                } elsif ($cert->{name} eq "date") {
                                        $when = str2time($cert->{value}, 'UTC');


@@ -572,20 +582,20 @@ sub rcs_recentchanges ($) { #{{{
                }
                
                my @changed_files = get_changed_files($automator, $rev);
                }
                
                my @changed_files = get_changed_files($automator, $rev);

-               my $file;

                
                my ($out, $err) = $automator->call("parents", $rev);
                my @parents = ($out =~ m/^($sha1_pattern)$/);
                my $parent = $parents[0];
 
                
                my ($out, $err) = $automator->call("parents", $rev);
                my @parents = ($out =~ m/^($sha1_pattern)$/);
                my $parent = $parents[0];
 

-               foreach $file (@changed_files) {
+               foreach my $file (@changed_files) {

                        next unless length $file;
                        
                        if (defined $config{diffurl} and (@parents == 1)) {
                                my $diffurl=$config{diffurl};
                                $diffurl=~s/\[\[r1\]\]/$parent/g;
                                $diffurl=~s/\[\[r2\]\]/$rev/g;
                        next unless length $file;
                        
                        if (defined $config{diffurl} and (@parents == 1)) {
                                my $diffurl=$config{diffurl};
                                $diffurl=~s/\[\[r1\]\]/$parent/g;
                                $diffurl=~s/\[\[r2\]\]/$rev/g;

-                               $diffurl=~s/\[\[file\]\]/$file/g;
+                               my $efile = uri_escape_utf8($file);
+                               $diffurl=~s/\[\[file\]\]/$efile/g;

                                push @pages, {
                                        page => pagename($file),
                                        diffurl => $diffurl,
                                push @pages, {
                                        page => pagename($file),
                                        diffurl => $diffurl,


@@ -611,10 +621,11 @@ sub rcs_recentchanges ($) { #{{{
        $automator->close();
 
        return @ret;
        $automator->close();
 
        return @ret;

-} #}}}
+}

 
 

-sub rcs_diff ($) { #{{{
+sub rcs_diff ($;$) {

        my $rev=shift;
        my $rev=shift;

+       my $maxlines=shift;

        my ($sha1) = $rev =~ /^($sha1_pattern)$/; # untaint
        
        chdir $config{srcdir}
        my ($sha1) = $rev =~ /^($sha1_pattern)$/; # untaint
        
        chdir $config{srcdir}


@@ -625,7 +636,11 @@ sub rcs_diff ($) { #{{{
                exec("mtn", "diff", "--root=$config{mtnrootdir}", "-r", "p:".$sha1, "-r", $sha1) || error("mtn diff $sha1 failed to run");
        }
 
                exec("mtn", "diff", "--root=$config{mtnrootdir}", "-r", "p:".$sha1, "-r", $sha1) || error("mtn diff $sha1 failed to run");
        }
 

-       my (@lines) = <MTNDIFF>;
+       my @lines;
+       while (my $line=<MTNDIFF>) {
+               last if defined $maxlines && @lines == $maxlines;
+               push @lines, $line;
+       }

 
        close MTNDIFF || debug("mtn diff $sha1 exited $?");
 
 
        close MTNDIFF || debug("mtn diff $sha1 exited $?");
 


@@ -635,9 +650,9 @@ sub rcs_diff ($) { #{{{
        else {
                return join("", @lines);
        }
        else {
                return join("", @lines);
        }

-} #}}}
+}

 
 

-sub rcs_getctime ($) { #{{{
+sub rcs_getctime ($) {

        my $file=shift;
 
        chdir $config{srcdir}
        my $file=shift;
 
        chdir $config{srcdir}


@@ -649,9 +664,11 @@ sub rcs_getctime ($) { #{{{
                     "--brief", $file) || error("mtn log $file failed to run");
        }
 
                     "--brief", $file) || error("mtn log $file failed to run");
        }
 

+       my $prevRev;

        my $firstRev;
        while (<MTNLOG>) {
                if (/^($sha1_pattern)/) {
        my $firstRev;
        while (<MTNLOG>) {
                if (/^($sha1_pattern)/) {

+                       $prevRev=$firstRev;

                        $firstRev=$1;
                }
        }
                        $firstRev=$1;
                }
        }


@@ -665,6 +682,17 @@ sub rcs_getctime ($) { #{{{
        my $automator = Monotone->new();
        $automator->open(undef, $config{mtnrootdir});
 
        my $automator = Monotone->new();
        $automator->open(undef, $config{mtnrootdir});
 

+       # mtn 0.48 has a bug that makes it list the creation of parent
+       # directories as last (first) log entry...  So when we're dealing
+       # with that version, let's check that the file we're looking for
+       # is actually part of the last (first) revision.  Otherwise, pick
+       # the one before (after) that one.
+       if ($mtn_version == 0.48) {
+               my $changes = [get_changed_files($automator, $firstRev)];
+               if (! exists {map { $_ => 1 } @$changes}->{$file}) {
+                       $firstRev = $prevRev;
+               }
+       }

        my $certs = [read_certs($automator, $firstRev)];
 
        $automator->close();
        my $certs = [read_certs($automator, $firstRev)];
 
        $automator->close();


@@ -687,6 +715,58 @@ sub rcs_getctime ($) { #{{{
        $date=str2time($date, 'UTC');
        debug("found ctime ".localtime($date)." for $file");
        return $date;
        $date=str2time($date, 'UTC');
        debug("found ctime ".localtime($date)." for $file");
        return $date;

-} #}}}
+}
+
+sub rcs_getmtime ($) {
+       my $file=shift;
+
+       chdir $config{srcdir}
+           or error("Cannot chdir to $config{srcdir}: $!");
+
+       my $child = open(MTNLOG, "-|");
+       if (! $child) {
+               exec("mtn", "log", "--root=$config{mtnrootdir}", "--no-graph",
+                    "--brief", $file) || error("mtn log $file failed to run");
+       }
+
+       my $lastRev = "";
+       while (<MTNLOG>) {
+               if (/^($sha1_pattern)/ && $lastRev eq "") {
+                       $lastRev=$1;
+               }
+       }
+       close MTNLOG || debug("mtn log $file exited $?");
+
+       if (! defined $lastRev) {
+               debug "failed to parse mtn log for $file";
+               return 0;
+       }
+
+       my $automator = Monotone->new();
+       $automator->open(undef, $config{mtnrootdir});
+
+       my $certs = [read_certs($automator, $lastRev)];
+
+       $automator->close();
+
+       my $date;
+
+       foreach my $cert (@$certs) {
+               if ($cert->{signature} eq "ok" && $cert->{trust} eq "trusted") {
+                       if ($cert->{name} eq "date") {
+                               $date = $cert->{value};
+                       }
+               }
+       }
+
+       if (! defined $date) {
+               debug "failed to find date cert for revision $lastRev when looking for creation time of $file";
+               return 0;
+       }
+
+       $date=str2time($date, 'UTC');
+       debug("found mtime ".localtime($date)." for $file");
+       return $date;
+}

 
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