diff options
| -rw-r--r-- | IkiWiki/Plugin/darcs.pm | 480 | ||||
| -rw-r--r-- | doc/ikiwiki-makerepo.mdwn | 13 | ||||
| -rwxr-xr-x | ikiwiki-makerepo | 40 |
3 files changed, 527 insertions, 6 deletions
diff --git a/IkiWiki/Plugin/darcs.pm b/IkiWiki/Plugin/darcs.pm new file mode 100644 index 000000000..1facc1789 --- /dev/null +++ b/IkiWiki/Plugin/darcs.pm @@ -0,0 +1,480 @@ +# 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. + + +package IkiWiki::Plugin::darcs; + +use warnings; +use strict; +use IkiWiki; + + +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); +} + + +# Internal functions + +sub silentsystem (@) { + open(SAVED_STDOUT, ">&STDOUT"); + open(STDOUT, ">/dev/null"); + my $ret = system @_; + open(STDOUT, ">&SAVED_STDOUT"); + return $ret; +} + +sub darcs_info ($$$) { + my $field = shift; + my $repodir = shift; + my $file = shift; # Relative to the repodir. + + my $child = open(DARCS_CHANGES, "-|"); + if (! $child) { + exec('darcs', 'changes', '--repodir', $repodir, '--xml-output', $file) or + error("failed to run 'darcs changes'"); + } + + # Brute force for now. :-/ + while (<DARCS_CHANGES>) { + last if /^<\/created_as>$/; + } + ($_) = <DARCS_CHANGES> =~ /$field=\'([^\']+)/; + $field eq 'hash' and s/\.gz//; # Strip away the '.gz' from 'hash'es. + + close(DARCS_CHANGES); + + return $_; +} + +sub file_in_vc($$) { + 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>) { + $found = 1, last if /^(\.\/)?$file$/; + } + close(DARCS_MANIFEST) or error("'darcs query manifest' exited " . $?); + + return $found; +} + +sub darcs_rev($) { + my $file = shift; # Relative to the repodir. + my $repodir = $config{srcdir}; + + return "" if (! file_in_vc($repodir, $file)); + my $hash = darcs_info('hash', $repodir, $file); + return defined $hash ? $hash : ""; +} + + +# Exported functions. + +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 rcs_update () { + silentsystem('darcs', "pull", "--repodir", $config{srcdir}, "-qa") +} + +sub rcs_prepedit ($) { + # 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; +} + +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_staged($$$) { + my ($message, $user, $ipaddr) = @_; + + my $author; + if (defined $user) { + $author = "$user\@web"; + } elsif (defined $ipaddr) { + $author = "$ipaddr\@web"; + } else { + $author = "anon\@web"; + } + if (!defined $message || !length($message)) { + $message = "empty message"; + } + + silentsystem('darcs', "record", "--repodir", $config{srcdir}, "-a", "-A", $author, + "-m", $message) and error("'darcs record' failed"); + + # Push the changes to the main repository. + silentsystem('darcs', 'push', '--quiet', '--repodir', $config{srcdir}, '--all') + and error("'darcs push' failed"); + # TODO: darcs send? + + return undef; +} + +sub rcs_add ($) { + my $file = shift; # Relative to the repodir. + + if(! file_in_vc($config{srcdir}, $file)) { + # Intermediate directories will be added automagically. + system('darcs', 'add', '--quiet', '--repodir', $config{srcdir}, + '--boring', $file) and error("'darcs add' failed"); + } +} + +sub rcs_remove ($) { + my $file = shift; # Relative to the repodir. + + unlink($config{srcdir}.'/'.$file); +} + +sub rcs_rename ($$) { + my $a = shift; # Relative to the repodir. + my $b = shift; # Relative to the repodir. + + system('darcs', 'mv', '--repodir', $config{srcdir}, $a, $b) + and error("'darcs mv' failed"); +} + +sub rcs_recentchanges ($) { + 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 => $when, + message => [@message], + pages => [@pg], + }; + } + + return @ret; +} + +sub rcs_diff ($) { + my $rev=shift; + my @lines; + foreach my $line (silentsystem("darcs", "diff", "--match", "hash ".$rev)) { + if (@lines || $line=~/^diff/) { + push @lines, $line."\n"; + } + } + if (wantarray) { + return @lines; + } + else { + return join("", @lines); + } +} + +sub rcs_getctime ($) { + 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 $filer=substr($file, length($repodir)); + $filer =~ s:^[/]+::; + + my $child = open(LOG, "-|"); + if (! $child) { + exec("darcs", "changes", "--xml", "--reverse", + "--repodir", "$repodir", "$filer") + || error("'darcs changes $filer' failed to run"); + } + + my $data; + $data .= $_ while(<LOG>); + close LOG; + + my $log = XMLin($data, ForceArray => 1); + + my $datestr=$log->{patch}[0]->{local_date}; + + if (! defined $datestr) { + warn "failed to get ctime for $filer"; + return 0; + } + + my $date=str2time($datestr); + + #debug("found ctime ".localtime($date)." for $filer"); + + return $date; +} + +1 + +# vim: ts=4 sw=4 noet diff --git a/doc/ikiwiki-makerepo.mdwn b/doc/ikiwiki-makerepo.mdwn index 9c532f201..3fbfbdc82 100644 --- a/doc/ikiwiki-makerepo.mdwn +++ b/doc/ikiwiki-makerepo.mdwn @@ -4,9 +4,9 @@ ikiwiki-makerepo - check an ikiwiki srcdir into revision control # SYNOPSIS -ikiwiki-makerepo svn|git|monotone srcdir repository +ikiwiki-makerepo svn|git|monotone|darcs srcdir repository -ikiwiki-makerepo bzr|mercurial srcdir +ikiwiki-makerepo bzr|mercurial|darcs srcdir # DESCRIPTION @@ -18,8 +18,15 @@ Note that for mercurial and bzr, the srcdir is converted into a repository. There is no need to have a separate repository with mercurial or bzr. +For darcs, the second (one-argument) form turns the given srcdir into a +darcs master repository with the (new) srcdir inside. Adjust your ikiwiki.setup +according to the command output! Also, the master repo's apply hook will be +preconfigured to call a (hypothetical) ikiwiki wrapper. The command +reports the relevant file. Adjust it as needed or remove it if you don't use +the cgi script. + Note that for monotone, you are assumed to already have run "mtn genkey" -to generate a key. +to generate key. # AUTHOR diff --git a/ikiwiki-makerepo b/ikiwiki-makerepo index 32a9f8646..1c9f256bd 100755 --- a/ikiwiki-makerepo +++ b/ikiwiki-makerepo @@ -6,8 +6,8 @@ srcdir="$2" repository="$3" usage () { - echo "usage: ikiwiki-makerepo svn|git|monotone srcdir repository" >&2 - echo " ikiwiki-makerepo bzr|mercurial srcdir" >&2 + echo "usage: ikiwiki-makerepo svn|git|monotone|darcs srcdir repository" >&2 + echo " ikiwiki-makerepo bzr|mercurial|darcs srcdir" >&2 exit 1 } @@ -20,7 +20,7 @@ if [ ! -d "$srcdir" ]; then exit 1 fi -if [ "$rcs" != mercurial ] && [ "$rcs" != bzr ]; then +if [ "$rcs" != mercurial ] && [ "$rcs" != bzr ] && [ "$rcs" != darcs ]; then if [ -z "$repository" ]; then echo "you need to specify both a srcdir and a repository for $rcs" >&2 usage @@ -121,6 +121,40 @@ monotone) echo ' return "passphrasehere"' echo "end" ;; +darcs) + if [ -e "$srcdir/_darcs" ]; then + echo "$srcdir already seems to be a darcs repository" >&2 + exit 1 + fi + + # if only one arg is given, we turn the given srcdir into the darcs + # master repo with a hidden srcdir inside its _darcs directory. + if [ -z "$repository" ]; then + echo "Turning $srcdir into master repo." + repository="$srcdir" + srcdir="$srcdir/_darcs/srcdir" + echo "The new srcdir is $srcdir - adjust ikiwiki.setup accordingly!" + fi + + mkdir -p "$repository" + cd "$repository" + darcs initialize + + mkdir -p "$srcdir" + cd "$srcdir" + darcs initialize + echo .ikiwiki >> _darcs/prefs/boring + darcs record -a -l -q -m "initial import" + darcs pull -a -q "$repository" + darcs push -a -q "$repository" + echo "Directory $srcdir is now a branch of darcs repo $repository" + + # set up master repo's apply hook and tell user to adjust it if desired + darcsdefaults="$repository/_darcs/prefs/defaults" + echo "Preconfiguring apply hook in $darcsdefaults - adjust as desired!" + echo "apply posthook $repository/_darcs/ikiwrapper" >> "$darcsdefaults" + echo "apply run-posthook" >> "$darcsdefaults" +;; *) echo "Unsupported revision control system $rcs" >&2 usage |