point to my branch, wrap lines, working on test coverage now

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

diff --git a/IkiWiki/Plugin/darcs.pm b/IkiWiki/Plugin/darcs.pm
index 0957ef0efd9dff6197e04f097b3471798e90066e..1313041e78fe9c61588c04a53bae58e4e22d33d5 100644 (file)
--- a/IkiWiki/Plugin/darcs.pm
+++ b/IkiWiki/Plugin/darcs.pm
@@ -1,509 +1,436 @@
-# Support for the darcs rcs, <URL:http://darcs.net/>.
-# Copyright (C) 2006  Thomas Schwinge <tschwinge@gnu.org>
-#               2007  Benjamin A'Lee <bma@bmalee.eu>
-#                     Tuomo Valkonen <tuomov@iki.fi>
-#               2008  Simon Michael <simon@joyful.com>
-#                     Petr Ročkai <me@mornfall.net>
-#                     Sven M. Hallberg <pesco@khjk.org>
-#
-# This program is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License as published by the
-# Free Software Foundation; either version 2 of the License, or (at your
-# option) any later version.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License along
-# with this program; if not, write to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-
-# History (see http://ikiwiki.info/todo/darcs/):
-#
-#  * Thomas Schwinge wrote the original file, implementing only rcs_commit.
-#  * Benjamin A'Lee contributed an alternative implementation.
-#  * Tuomo Valkonen contributed rcs_getctime and stub rcs_recentchanges.
-#  * Simon Michael contributed multiple changes.
-#  * Petr Ročkai fixed rcs_recentchanges and added caching to rcs_getctime.
-#  * Sven M. Hallberg merged the above and added missing features.
-
-
-# We're guaranteed to be the only instance of ikiwiki running at a given
-# time.  It is essential that only ikiwiki is working on a particular
-# repository.  That means one instance of ikiwiki and it also means that
-# you must not 'darcs push' into this repository, as this might create
-# race conditions, as I understand it.
-
-
+#!/usr/bin/perl

 package IkiWiki::Plugin::darcs;
 
 use warnings;
 use strict;
 use IkiWiki;
 
 package IkiWiki::Plugin::darcs;
 
 use warnings;
 use strict;
 use IkiWiki;
 

-

 sub import {
 sub import {

-    hook(type => "checkconfig", id => "darcs", call => \&checkconfig);
-    hook(type => "getsetup", id => "darcs", call => \&getsetup);
-    hook(type => "rcs", id => "rcs_update", call => \&rcs_update);
-    hook(type => "rcs", id => "rcs_prepedit", call => \&rcs_prepedit);
-    hook(type => "rcs", id => "rcs_commit", call => \&rcs_commit);
-    hook(type => "rcs", id => "rcs_commit_staged", call => \&rcs_commit_staged);
-    hook(type => "rcs", id => "rcs_add", call => \&rcs_add);
-    hook(type => "rcs", id => "rcs_remove", call => \&rcs_remove);
-    hook(type => "rcs", id => "rcs_rename", call => \&rcs_rename);
-    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);
-}
-
-
-# Which darcs executable to use.
-my $darcs = ($ENV{DARCS} or 'darcs');
-
-
-# Internal functions
-
-our %cache;
-
-sub loadcache () {
-    my $repodir=$config{srcdir};
-    if (!defined %cache) {
-        my $f = "$repodir/.ikiwiki.ctimes";
-        if (-s "$f") {
-            my $VAR1;
-            my $x = `cat "$f"`;
-            $x =~ /^(.*)$/sm; # untaint
-            eval "$1";
-            %cache = %$VAR1;
-        }
-    }
-}
-
-END {
-    my $repodir=$config{srcdir};
-    if (defined %cache) {
-        debug("dumping ctime cache to $repodir/.ikiwiki.ctimes");
-        open CACHE, ">$repodir/.ikiwiki.ctimes";
-        print CACHE Dumper(\%cache);
-        close CACHE;
-    }
+       hook(type => "checkconfig", id => "darcs", call => \&checkconfig);
+       hook(type => "getsetup", id => "darcs", call => \&getsetup);
+       hook(type => "rcs", id => "rcs_update", call => \&rcs_update);
+       hook(type => "rcs", id => "rcs_prepedit", call => \&rcs_prepedit);
+       hook(type => "rcs", id => "rcs_commit", call => \&rcs_commit);
+       hook(type => "rcs", id => "rcs_commit_staged", call => \&rcs_commit_staged);
+       hook(type => "rcs", id => "rcs_add", call => \&rcs_add);
+       hook(type => "rcs", id => "rcs_remove", call => \&rcs_remove);
+       hook(type => "rcs", id => "rcs_rename", call => \&rcs_rename);
+       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 silentsystem (@) {
 }
 
 sub silentsystem (@) {

-    open(SAVED_STDOUT, ">&STDOUT");
-    open(STDOUT, ">/dev/null");
-    my $ret = system @_;
-    open(STDOUT, ">&SAVED_STDOUT");
-    return $ret;
+       open(SAVED_STDOUT, ">&STDOUT");
+       open(STDOUT, ">/dev/null");
+       my $ret = system @_;
+       open(STDOUT, ">&SAVED_STDOUT");
+       return $ret;

 }
 
 sub darcs_info ($$$) {
 }
 
 sub darcs_info ($$$) {

-    my $field = shift;
-    my $repodir = shift;
-    my $file = shift; # Relative to the repodir.
-
-    my $child = open(DARCS_CHANGES, "-|");
-    if (! $child) {
-    exec($darcs, 'changes', '--repodir', $repodir, '--xml-output', $file) or
-        error("failed to run 'darcs changes'");
-    }
-
-    # Brute force for now.  :-/
-    while (<DARCS_CHANGES>) {
-    last if /^<\/created_as>$/;
-    }
-    ($_) = <DARCS_CHANGES> =~ /$field=\'([^\']+)/;
-    $field eq 'hash' and s/\.gz//; # Strip away the '.gz' from 'hash'es.
-
-    close(DARCS_CHANGES) or error("'darcs changes' exited " . $?);
-
-    return $_;
+       my $field = shift;
+       my $repodir = shift;
+       my $file = shift; # Relative to the repodir.
+
+       my $child = open(DARCS_CHANGES, "-|");
+       if (! $child) {
+               exec('darcs', 'changes', '--repodir', $repodir, '--xml-output', $file) or
+                       error("failed to run 'darcs changes'");
+       }
+
+       # Brute force for now.  :-/
+       while (<DARCS_CHANGES>) {
+               last if /^<\/created_as>$/;
+       }
+       ($_) = <DARCS_CHANGES> =~ /$field=\'([^\']+)/;
+       $field eq 'hash' and s/\.gz//; # Strip away the '.gz' from 'hash'es.
+
+       close(DARCS_CHANGES);
+
+       return $_;

 }
 
 }
 

-sub darcs_rev($) {
-    my $file = shift; # Relative to the repodir.
-    my $repodir = $config{srcdir};
-
-    my $child = open(DARCS_MANIFEST, "-|");
-    if (! $child) {
-        exec($darcs, 'query', 'manifest', '--repodir', $repodir) or
-            error("failed to run 'darcs query manifest'");
-    }
-    my $found=0;
-    while (<DARCS_MANIFEST>) {
-        $found = 1, last if /^$file$/;
-    }
-    return "" if (! $found);
-    close(DARCS_MANIFEST) or error("'darcs query manifest' exited " . $?);
-
-    my $hash = darcs_info('hash', $repodir, $file);
-    return defined $hash ? $hash : "";
+sub file_in_vc ($$) {
+       my $repodir = shift;
+       my $file = shift;
+
+       my $child = open(DARCS_MANIFEST, "-|");
+       if (! $child) {
+               exec('darcs', 'query', 'manifest', '--repodir', $repodir) or
+                       error("failed to run 'darcs query manifest'");
+       }
+       my $found=0;
+       while (<DARCS_MANIFEST>) {
+               $found = 1 if /^(\.\/)?$file$/;
+       }
+       close(DARCS_MANIFEST) or error("'darcs query manifest' exited " . $?);
+
+       return $found;

 }
 
 }
 

+sub darcs_rev ($) {
+       my $file = shift; # Relative to the repodir.
+       my $repodir = $config{srcdir};

 
 

-# Exported functions.
+       return "" unless file_in_vc($repodir, $file);
+       my $hash = darcs_info('hash', $repodir, $file);
+       return defined $hash ? $hash : "";
+}

 
 

-sub checkconfig() {
-    if (defined $config{darcs_wrapper} && length $config{darcs_wrapper}) {
-       push @{$config{wrappers}}, {
-           wrapper => $config{darcs_wrapper},
-           wrappermode => (defined $config{darcs_wrappermode} ? $config{darcs_wrappermode} : "06755"),
-       };
-    }
+sub checkconfig () {
+       if (defined $config{darcs_wrapper} && length $config{darcs_wrapper}) {
+               push @{$config{wrappers}}, {
+                       wrapper => $config{darcs_wrapper},
+                       wrappermode => (defined $config{darcs_wrappermode} ? $config{darcs_wrappermode} : "06755"),
+               };
+       }

 }
 
 }
 

-sub getsetup() {
-    return
-       plugin => {
-           safe => 0, # rcs plugin
-           rebuild => undef,
-       },
-       darcs_wrapper => {
-           type => "string",
-           example => "/darcs/repo/_darcs/ikiwiki-wrapper",
-           description => "wrapper to generate (set as master repo apply hook)",
-           safe => 0, # file
-           rebuild => 0,
-       },
-       darcs_wrappermode => {
-           type => "string",
-           example => '06755',
-           description => "mode for darcs_wrapper (can safely be made suid)",
-           safe => 0,
-           rebuild => 0,
-       },
-       historyurl => {
-           type => "string",
-           example => "http://darcs.example.com/darcsweb.cgi?r=wiki;a=filehistory;f=[[file]]",
-           description => "darcsweb url to show file history ([[file]] substituted)",
-           safe => 1,
-           rebuild => 1,
-       },
-       diffurl => {
-           type => "string",
-           example => "http://darcs.example.com/darcsweb.cgi?r=wiki;a=filediff;h=[[hash]];f=[[file]]",
-           description => "darcsweb url to show a diff ([[hash]] and [[file]] substituted)",
-           safe => 1,
-           rebuild => 1,
-       },
+sub getsetup () {
+       return
+               plugin => {
+                       safe => 0, # rcs plugin
+                       rebuild => undef,
+                       section => "rcs",
+               },
+               darcs_wrapper => {
+                       type => "string",
+                       example => "/darcs/repo/_darcs/ikiwiki-wrapper",
+                       description => "wrapper to generate (set as master repo apply hook)",
+                       safe => 0, # file
+                       rebuild => 0,
+               },
+               darcs_wrappermode => {
+                       type => "string",
+                       example => '06755',
+                       description => "mode for darcs_wrapper (can safely be made suid)",
+                       safe => 0,
+                       rebuild => 0,
+               },
+               historyurl => {
+                       type => "string",
+                       example => "http://darcs.example.com/darcsweb.cgi?r=wiki;a=filehistory;f=[[file]]",
+                       description => "darcsweb url to show file history ([[file]] substituted)",
+                       safe => 1,
+                       rebuild => 1,
+               },
+               diffurl => {
+                       type => "string",
+                       example => "http://darcs.example.com/darcsweb.cgi?r=wiki;a=filediff;h=[[hash]];f=[[file]]",
+                       description => "darcsweb url to show a diff ([[hash]] and [[file]] substituted)",
+                       safe => 1,
+                       rebuild => 1,
+               },

 }
 
 sub rcs_update () {
 }
 
 sub rcs_update () {

-    silentsystem($darcs, "pull", "--repodir", $config{srcdir}, "-qa")
+       silentsystem('darcs', "pull", "--repodir", $config{srcdir}, "-qa")

 }
 
 sub rcs_prepedit ($) {
 }
 
 sub rcs_prepedit ($) {

-    # Prepares to edit a file under revision control.  Returns a token that
-    # must be passed to rcs_commit() when the file is to be commited.  For us,
-    # this token the hash value of the latest patch that modifies the file,
-    # i.e. something like its current revision.  If the file is not yet added
-    # to the repository, we return TODO: the empty string.
-
-    my $file = shift; # Relative to the repodir.
-    my $rev = darcs_rev($file);
-    return $rev;
+       # Prepares to edit a file under revision control.  Returns a token that
+       # must be passed to rcs_commit() when the file is to be commited.  For us,
+       # this token the hash value of the latest patch that modifies the file,
+       # i.e. something like its current revision.
+
+       my $file = shift; # Relative to the repodir.
+       my $rev = darcs_rev($file);
+       return $rev;
+}
+
+sub commitauthor (@) {
+       my %params=@_;
+       
+       my $author="anon\@web";
+       if (defined $params{session}) {
+               if (defined $params{session}->param("name")) {
+                       return $params{session}->param("name").'@web';
+               }
+               elsif (defined $params{session}->remote_addr()) {
+                       return $params{session}->remote_addr().'@web';
+               }
+       }
+       return 'anon@web';

 }
 
 }
 

-sub rcs_commit ($$$;$$) {
-    # Commit the page.  Returns 'undef' on success and a version of the page
-    # with conflict markers on failure.
-
-    my ($file, $message, $rcstoken, $user, $ipaddr) = @_;
-
-    # Compute if the "revision" of $file changed.
-    my $changed = darcs_rev($file) ne $rcstoken;
-
-    # Yes, the following is a bit convoluted.
-    if ($changed) {
-    # TODO.  Invent a better, non-conflicting name.
-    rename("$config{srcdir}/$file", "$config{srcdir}/$file.save") or
-        error("failed to rename $file to $file.save: $!");
-
-    # Roll the repository back to $rcstoken.
-
-    # TODO.  Can we be sure that no changes are lost?  I think that
-    # we can, if we make sure that the 'darcs push' below will always
-    # succeed.
-
-    # We need to revert everything as 'darcs obliterate' might choke
-    # otherwise.
-        # TODO: 'yes | ...' needed?  Doesn't seem so.
-    silentsystem($darcs, "revert", "--repodir", $config{srcdir}, "--all") and
-        error("'darcs revert' failed");
-    # Remove all patches starting at $rcstoken.
-    my $child = open(DARCS_OBLITERATE, "|-");
-    if (! $child) {
-        open(STDOUT, ">/dev/null");
-        exec($darcs, "obliterate", "--repodir", $config{srcdir},
-           "--match", "hash " . $rcstoken) and
-           error("'darcs obliterate' failed");
-    }
-    while (print DARCS_OBLITERATE "y") {
-        ;
-    }
-    close(DARCS_OBLITERATE);
-    # Restore the $rcstoken one.
-    silentsystem($darcs, "pull", "--quiet", "--repodir", $config{srcdir},
-           "--match", "hash " . $rcstoken, "--all") and
-           error("'darcs pull' failed");
-
-    # We're back at $rcstoken.  Re-install the modified file.
-    rename("$config{srcdir}/$file.save", "$config{srcdir}/$file") or
-        error("failed to rename $file.save to $file: $!");
-    }
-
-    # Record the changes.
-    my $author;
-    if (defined $user) {
-        $author = "$user\@web";
-    } elsif (defined $ipaddr) {
-        $author = "$ipaddr\@web";
-    } else {
-        $author = "anon\@web";
-    }
-    if (!defined $message || !length($message)) {
-        $message = "empty message";
-    }
-    silentsystem($darcs, 'record', '--repodir', $config{srcdir}, '--all',
-       '-m', $message, '--author', $author, $file) and
-           error("'darcs record' failed");
-
-    # Update the repository by pulling from the default repository, which is
-    # master repository.
-    silentsystem($darcs, "pull", "--quiet", "--repodir", $config{srcdir},
-       "--all") and error("'darcs pull' failed");
-
-    # If this updating yields any conflicts, we'll record them now to resolve
-    # them.  If nothing is recorded, there are no conflicts.
-    $rcstoken = darcs_rev($file);
-    # TODO: Use only the first line here, i.e. only the patch name?
-    writefile("$file.log", $config{srcdir}, 'resolve conflicts: ' . $message);
-    silentsystem($darcs, 'record', '--repodir', $config{srcdir}, '--all',
-       '-m', 'resolve conflicts: ' . $message, '--author', $author, $file) and
-           error("'darcs record' failed");
-    my $conflicts = darcs_rev($file) ne $rcstoken;
-    unlink("$config{srcdir}/$file.log") or
-    error("failed to remove '$file.log'");
-
-    # Push the changes to the main repository.
-    silentsystem($darcs, 'push', '--quiet', '--repodir', $config{srcdir}, '--all')
-    and error("'darcs push' failed");
-    # TODO: darcs send?
-
-    if ($conflicts) {
-        my $document = readfile("$config{srcdir}/$file");
-        # Try to leave everything in a consistent state.
-        # TODO: 'yes | ...' needed?  Doesn't seem so.
-        silentsystem($darcs, "revert", "--repodir", $config{srcdir}, "--all") and
-            warn("'darcs revert' failed");
-        return $document;
-    } else {
-        return undef;
-    }
+sub rcs_commit (@) {
+       # Commit the page.  Returns 'undef' on success and a version of the page
+       # with conflict markers on failure.
+       my %params=@_;
+
+       my ($file, $message, $token) =
+               ($params{file}, $params{message}, $params{token});
+
+       # Compute if the "revision" of $file changed.
+       my $changed = darcs_rev($file) ne $token;
+
+       # Yes, the following is a bit convoluted.
+       if ($changed) {
+               # TODO.  Invent a better, non-conflicting name.
+               rename("$config{srcdir}/$file", "$config{srcdir}/$file.save") or
+                       error("failed to rename $file to $file.save: $!");
+
+               # Roll the repository back to $token.
+
+               # TODO.  Can we be sure that no changes are lost?  I think that
+               # we can, if we make sure that the 'darcs push' below will always
+               # succeed.
+       
+               # We need to revert everything as 'darcs obliterate' might choke
+               # otherwise.
+               # TODO: 'yes | ...' needed?  Doesn't seem so.
+               silentsystem('darcs', "revert", "--repodir", $config{srcdir}, "--all") == 0 ||
+                       error("'darcs revert' failed");
+               # Remove all patches starting at $token.
+               my $child = open(DARCS_OBLITERATE, "|-");
+               if (! $child) {
+                       open(STDOUT, ">/dev/null");
+                       exec('darcs', "obliterate", "--repodir", $config{srcdir},
+                          "--match", "hash " . $token) and
+                          error("'darcs obliterate' failed");
+               }
+               1 while print DARCS_OBLITERATE "y";
+               close(DARCS_OBLITERATE);
+               # Restore the $token one.
+               silentsystem('darcs', "pull", "--quiet", "--repodir", $config{srcdir},
+                       "--match", "hash " . $token, "--all") == 0 ||
+                       error("'darcs pull' failed");
+       
+               # We're back at $token.  Re-install the modified file.
+               rename("$config{srcdir}/$file.save", "$config{srcdir}/$file") or
+                       error("failed to rename $file.save to $file: $!");
+       }
+
+       # Record the changes.
+       my $author=commitauthor(%params);
+       if (!defined $message || !length($message)) {
+               $message = "empty message";
+       }
+       silentsystem('darcs', 'record', '--repodir', $config{srcdir}, '--all',
+                       '-m', $message, '--author', $author, $file) == 0 ||
+               error("'darcs record' failed");
+
+       # Update the repository by pulling from the default repository, which is
+       # master repository.
+       silentsystem('darcs', "pull", "--quiet", "--repodir", $config{srcdir},
+               "--all") == 0 || error("'darcs pull' failed");
+
+       # If this updating yields any conflicts, we'll record them now to resolve
+       # them.  If nothing is recorded, there are no conflicts.
+       $token = darcs_rev($file);
+       # TODO: Use only the first line here, i.e. only the patch name?
+       writefile("$file.log", $config{srcdir}, 'resolve conflicts: ' . $message);
+       silentsystem('darcs', 'record', '--repodir', $config{srcdir}, '--all',
+               '-m', 'resolve conflicts: ' . $message, '--author', $author, $file) == 0 ||
+               error("'darcs record' failed");
+       my $conflicts = darcs_rev($file) ne $token;
+       unlink("$config{srcdir}/$file.log") or
+               error("failed to remove '$file.log'");
+
+       # Push the changes to the main repository.
+       silentsystem('darcs', 'push', '--quiet', '--repodir', $config{srcdir}, '--all') == 0 ||
+               error("'darcs push' failed");
+       # TODO: darcs send?
+
+       if ($conflicts) {
+               my $document = readfile("$config{srcdir}/$file");
+               # Try to leave everything in a consistent state.
+               # TODO: 'yes | ...' needed?  Doesn't seem so.
+               silentsystem('darcs', "revert", "--repodir", $config{srcdir}, "--all") == 0 || 
+                       warn("'darcs revert' failed");
+               return $document;
+       }
+       else {
+               return undef;
+       }

 }
 
 }
 

-sub rcs_commit_staged($$$) {
-    my ($message, $user, $ipaddr) = @_;
-
-    my $author;
-    if (defined $user) {
-        $author = "$user\@web";
-    } elsif (defined $ipaddr) {
-        $author = "$ipaddr\@web";
-    } else {
-        $author = "anon\@web";
-    }
-    if (!defined $message || !length($message)) {
-        $message = "empty message";
-    }
-
-    silentsystem($darcs, "record", "--repodir", $config{srcdir}, "-a", "-A", $author,
-       "-m", $message) and error("'darcs record' failed");
-
-    # Push the changes to the main repository.
-    silentsystem($darcs, 'push', '--quiet', '--repodir', $config{srcdir}, '--all')
-    and error("'darcs push' failed");
-    # TODO: darcs send?
-
-    return undef;
+sub rcs_commit_staged (@) {
+       my %params=@_;
+
+       my $author=commitauthor(%params);
+       if (!defined $params{message} || !length($params{message})) {
+               $params{message} = "empty message";
+       }
+
+       silentsystem('darcs', "record", "--repodir", $config{srcdir},
+               "-a", "-A", $author,
+               "-m", $params{message},
+       ) == 0 || error("'darcs record' failed");
+
+       # Push the changes to the main repository.
+       silentsystem('darcs', 'push', '--quiet', '--repodir', $config{srcdir}, '--all') == 0 ||
+               error("'darcs push' failed");
+       # TODO: darcs send?
+
+       return undef;

 }
 
 sub rcs_add ($) {
 }
 
 sub rcs_add ($) {

-    my $file = shift; # Relative to the repodir.
+       my $file = shift; # Relative to the repodir.

 
 

-    # Intermediate directories will be added automagically.
-    system($darcs, 'add', '--quiet', '--repodir', $config{srcdir},
-       '--boring', $file) and error("'darcs add' failed");
+       if(! file_in_vc($config{srcdir}, $file)) {
+               # Intermediate directories will be added automagically.
+               system('darcs', 'add', '--quiet', '--repodir', $config{srcdir},
+                       '--boring', $file) == 0 || error("'darcs add' failed");
+       }

 }
 
 sub rcs_remove ($) {
 }
 
 sub rcs_remove ($) {

-    my $file = shift; # Relative to the repodir.
+       my $file = shift; # Relative to the repodir.

 
 

-    system('rm', $config{srcdir}.'/'.$file)
-       and error("'rm' failed");
+       unlink($config{srcdir}.'/'.$file);

 }
 
 sub rcs_rename ($$) {
 }
 
 sub rcs_rename ($$) {

-    my $a = shift; # Relative to the repodir.
-    my $b = shift; # Relative to the repodir.
+       my $a = shift; # Relative to the repodir.
+       my $b = shift; # Relative to the repodir.

 
 

-    system($darcs, 'mv', '--repodir', $config{srcdir}, $a, $b)
-       and error("'darcs mv' failed");
+       system('darcs', 'mv', '--repodir', $config{srcdir}, $a, $b) == 0 ||
+               error("'darcs mv' failed");

 }
 
 sub rcs_recentchanges ($) {
 }
 
 sub rcs_recentchanges ($) {

-    my $num=shift;
-    my @ret;
-
-    eval q{use Date::Parse};
-    eval q{use XML::Simple};
-
-    my $repodir=$config{srcdir};
-
-    debug("darcs recent changes: $num");
-
-    my $child = open(LOG, "-|");
-    if (! $child) {
-        $ENV{"DARCS_DONT_ESCAPE_ANYTHING"}=1;
-        exec("darcs", "changes", "--xml", 
-            "--summary",
-             "--repodir", "$repodir",
-             "--last", "$num")
-        || error("'darcs changes' failed to run");
-    }
-    my $data;
-    $data .= $_ while(<LOG>);
-    close LOG;
-
-    my $log = XMLin($data, ForceArray => 1);
-
-    debug("parsing recent changes...");
-    foreach my $patch (@{$log->{patch}}) {
-        my $date=$patch->{local_date};
-        my $hash=$patch->{hash};
-        my $when=str2time($date);
-        my (@pages, @files, @pg);
-        push @pages, $_ for (@{$patch->{summary}->[0]->{modify_file}});
-        push @pages, $_ for (@{$patch->{summary}->[0]->{add_file}});
-        push @pages, $_ for (@{$patch->{summary}->[0]->{remove_file}});
-        for (@pages) {
-            my $f = $_;
-            $f = $_->{content} if (ref $_);
-            $f =~ s,^\s+,,; $f =~ s,\s+$,,; # cut whitespace
-
-           push @files, $f;
-        }
-       for (@{$patch->{summary}->[0]->{move}}) {
-           my $p = $_;
-           push @files, $p->{from};
-        }
-
-       for (@files) {
-           my $f = $_;
-           my $d = defined $config{'diffurl'} ? $config{'diffurl'} : "";
-           $d =~ s/\[\[file\]\]/$f/go;
-           $d =~ s/\[\[hash\]\]/$hash/go;
-
-            debug("file: $f");
-           debug("diffurl: $d");
-            push @pg, {
-                page => pagename($f),
-               diffurl => $d,
-            };
-        }
-        next unless (scalar @pg > 0);
-        debug("recent change: " . $patch->{name}[0] . " ("
-            . scalar @pg . " changes)");
-
-        my @message;
-        push @message, { line => $_ } for (@{$patch->{name}});
-
-        my $committype;
-        if ($patch->{author} =~ /\@web$/) {
-            $committype = "web";
-        } else {
-            $committype = "darcs";
-        }
-
-        push @ret, {
-            rev => $patch->{hash},
-            user => $patch->{author},
-            committype => $committype,
-            when => $when, 
-            message => [@message],
-            pages => [@pg],
-        };
-    }
-
-    return @ret;
+       my $num=shift;
+       my @ret;
+
+       eval q{use Date::Parse};
+       eval q{use XML::Simple};
+
+       my $repodir=$config{srcdir};
+
+       my $child = open(LOG, "-|");
+       if (! $child) {
+               $ENV{"DARCS_DONT_ESCAPE_ANYTHING"}=1;
+               exec("darcs", "changes", "--xml", 
+                       "--summary",
+                        "--repodir", "$repodir",
+                        "--last", "$num")
+               || error("'darcs changes' failed to run");
+       }
+       my $data;
+       $data .= $_ while(<LOG>);
+       close LOG;
+
+       my $log = XMLin($data, ForceArray => 1);
+
+       foreach my $patch (@{$log->{patch}}) {
+               my $date=$patch->{local_date};
+               my $hash=$patch->{hash};
+               my $when=str2time($date);
+               my (@pages, @files, @pg);
+               push @pages, $_ foreach (@{$patch->{summary}->[0]->{modify_file}});
+               push @pages, $_ foreach (@{$patch->{summary}->[0]->{add_file}});
+               push @pages, $_ foreach (@{$patch->{summary}->[0]->{remove_file}});
+               foreach my $f (@pages) {
+                       $f = $f->{content} if ref $f;
+                       $f =~ s,^\s+,,; $f =~ s,\s+$,,; # cut whitespace
+
+                       push @files, $f;
+               }
+               foreach my $p (@{$patch->{summary}->[0]->{move}}) {
+                       push @files, $p->{from};
+               }
+
+               foreach my $f (@files) {
+                       my $d = defined $config{'diffurl'} ? $config{'diffurl'} : "";
+                       $d =~ s/\[\[file\]\]/$f/go;
+                       $d =~ s/\[\[hash\]\]/$hash/go;
+
+                       push @pg, {
+                               page => pagename($f),
+                               diffurl => $d,
+                       };
+               }
+               next unless (scalar @pg > 0);
+
+               my @message;
+               push @message, { line => $_ } foreach (@{$patch->{name}});
+
+               my $committype;
+               my $author;
+               if ($patch->{author} =~ /(.*)\@web$/) {
+                       $author = $1;
+                       $committype = "web";
+               }
+               else {
+                       $author=$patch->{author};
+                       $committype = "darcs";
+               }
+
+               push @ret, {
+                       rev => $patch->{hash},
+                       user => $author,
+                       committype => $committype,
+                       when => $when, 
+                       message => [@message],
+                       pages => [@pg],
+               };
+       }
+
+       return @ret;

 }
 
 }
 

-sub rcs_diff ($) {
-    my $rev=shift;
-    my @lines;
-    foreach my $line (silentsystem("darcs", "diff", "--match", "hash ".$rev)) {
-       if (@lines || $line=~/^diff/) {
-           push @lines, $line."\n";
-        }
-    }
-    if (wantarray) {
-       return @lines;
-    }
-    else {
-       return join("", @lines);
-    }
+sub rcs_diff ($;$) {
+       my $rev=shift;
+       my $maxlines=shift;
+       my @lines;
+       my $repodir=$config{srcdir};
+       foreach my $line (`darcs diff --repodir  $repodir --match 'hash $rev'`) {
+               if (@lines || $line=~/^diff/) {
+                       last if defined $maxlines && @lines == $maxlines;
+                       push @lines, $line."\n";
+               }
+       }
+       if (wantarray) {
+               return @lines;
+       }
+       else {
+               return join("", @lines);
+       }

 }
 
 sub rcs_getctime ($) {
 }
 
 sub rcs_getctime ($) {

-    my $file=shift;
-
-    eval q{use Date::Parse};
-    eval q{use XML::Simple};
-    local $/=undef;
-
-    # Sigh... doing things the hard way again
-    my $repodir=$config{srcdir};
+       my $file=shift;

 
 

-    &loadcache;
+       eval q{use Date::Parse};
+       eval q{use XML::Simple};
+       local $/=undef;

 
 

-    my $filer=substr($file, length($repodir));
-    $filer =~ s:^[/]+::;
+       my $child = open(LOG, "-|");
+       if (! $child) {
+               exec("darcs", "changes", "--xml", "--reverse",
+                       "--repodir", $config{srcdir}, $file)
+               || error("'darcs changes $file' failed to run");
+       }

 
 

-    if (defined $cache{$filer}) {
-        #debug("taking cached ctime ".localtime($cache{$filer})." for $filer");
-        return $cache{$filer};
-    }
+       my $data;
+       {
+               local $/=undef;
+               $data = <LOG>;
+       }
+       close LOG;

 
 

-    my $child = open(LOG, "-|");
-    if (! $child) {
-        exec("darcs", "changes", "--xml", "--reverse",
-             "--repodir", "$repodir", "$filer")
-        || error("'darcs changes $filer' failed to run");
-    }
+       my $log = XMLin($data, ForceArray => 1);

 
 

-    my $data;
-    $data .= $_ while(<LOG>);
-    close LOG;
+       my $datestr = $log->{patch}[0]->{local_date};

 
 

-    my $log = XMLin($data, ForceArray => 1);
+       if (! defined $datestr) {
+               warn "failed to get ctime for $file";
+               return 0;
+       }

 
 

-    my $datestr=$log->{patch}[0]->{local_date};
+       my $date = str2time($datestr);
+       
+       debug("ctime for '$file': ". localtime($date));

 
 

-    if (! defined $datestr) {
-        warn "failed to get ctime for $filer";
-        $cache{$filer} = 0;
-        return 0;
-    }
-
-    my $date=str2time($datestr);
-
-    #debug("found ctime ".localtime($date)." for $filer");
+       return $date;
+}

 
 

-    $cache{$filer} = $date;
-    return $date;
+sub rcs_getmtime ($) {
+       error "rcs_getmtime is not implemented for darcs\n"; # TODO

 }
 
 1
 }
 
 1