ikiwiki/IkiWiki/Plugin/svn.pm

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#!/usr/bin/perl
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package IkiWiki::Plugin::svn;
use warnings;
use strict;
use IkiWiki;
use POSIX qw(setlocale LC_CTYPE);
sub import {
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hook(type => "checkconfig", id => "svn", call => \&checkconfig);
hook(type => "getsetup", id => "svn", 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);
}
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sub checkconfig () {
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if (! defined $config{svnpath}) {
$config{svnpath}="trunk";
}
if (exists $config{svnpath}) {
# code depends on the path not having extraneous slashes
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$config{svnpath}=~tr#/#/#s;
$config{svnpath}=~s/\/$//;
$config{svnpath}=~s/^\///;
}
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if (defined $config{svn_wrapper} && length $config{svn_wrapper}) {
push @{$config{wrappers}}, {
wrapper => $config{svn_wrapper},
wrappermode => (defined $config{svn_wrappermode} ? $config{svn_wrappermode} : "04755"),
};
}
}
sub getsetup () {
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return
plugin => {
safe => 0, # rcs plugin
rebuild => undef,
section => "rcs",
},
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svnrepo => {
type => "string",
example => "/svn/wiki",
description => "subversion repository location",
safe => 0, # path
rebuild => 0,
},
svnpath => {
type => "string",
example => "trunk",
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description => "path inside repository where the wiki is located",
safe => 0, # paranoia
rebuild => 0,
},
svn_wrapper => {
type => "string",
example => "/svn/wikirepo/hooks/post-commit",
description => "svn post-commit hook to generate",
safe => 0, # file
rebuild => 0,
},
svn_wrappermode => {
type => "string",
example => '04755',
description => "mode for svn_wrapper (can safely be made suid)",
safe => 0,
rebuild => 0,
},
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historyurl => {
type => "string",
example => "http://svn.example.org/trunk/[[file]]",
description => "viewvc url to show file history ([[file]] substituted)",
safe => 1,
rebuild => 1,
},
diffurl => {
type => "string",
example => "http://svn.example.org/trunk/[[file]]?root=wiki&r1=[[r1]]&r2=[[r2]]",
description => "viewvc url to show a diff ([[file]], [[r1]], and [[r2]] substituted)",
safe => 1,
rebuild => 1,
},
}
# svn needs LC_CTYPE set to a UTF-8 locale, so try to find one. Any will do.
sub find_lc_ctype() {
my $current = setlocale(LC_CTYPE());
return $current if $current =~ m/UTF-?8$/i;
# Make some obvious attempts to avoid calling `locale -a`
foreach my $locale ("$current.UTF-8", "en_US.UTF-8", "en_GB.UTF-8") {
return $locale if setlocale(LC_CTYPE(), $locale);
}
# Try to get all available locales and pick the first UTF-8 one found.
if (my @locale = grep(/UTF-?8$/i, `locale -a`)) {
chomp @locale;
return $locale[0] if setlocale(LC_CTYPE(), $locale[0]);
}
# fallback to the current locale
return $current;
}
$ENV{LC_CTYPE} = $ENV{LC_CTYPE} || find_lc_ctype();
sub svn_info ($$) {
my $field=shift;
my $file=shift;
my $info=`LANG=C svn info $file`;
my ($ret)=$info=~/^$field: (.*)$/m;
return $ret;
}
sub rcs_update () {
if (-d "$config{srcdir}/.svn") {
if (system("svn", "update", "--quiet", $config{srcdir}) != 0) {
warn("svn update 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}/.svn") {
# For subversion, return the revision of the file when
# editing begins.
my $rev=svn_info("Revision", "$config{srcdir}/$file");
return defined $rev ? $rev : "";
}
}
sub commitmessage (@) {
my %params=@_;
if (defined $params{session}) {
if (defined $params{session}->param("name")) {
return "web commit by ".
$params{session}->param("name").
(length $params{message} ? ": $params{message}" : "");
}
elsif (defined $params{session}->remote_addr()) {
return "web commit from ".
$params{session}->remote_addr().
(length $params{message} ? ": $params{message}" : "");
}
}
return $params{message};
}
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 %params=@_;
if (-d "$config{srcdir}/.svn") {
# Check to see if the page has been changed by someone
# else since rcs_prepedit was called.
my ($oldrev)=$params{token}=~/^([0-9]+)$/; # untaint
my $rev=svn_info("Revision", "$config{srcdir}/$params{file}");
if (defined $rev && defined $oldrev && $rev != $oldrev) {
# Merge their changes into the file that we've
# changed.
if (system("svn", "merge", "--quiet", "-r$oldrev:$rev",
"$config{srcdir}/$params{file}", "$config{srcdir}/$params{file}") != 0) {
warn("svn merge -r$oldrev:$rev failed\n");
}
}
if (system("svn", "commit", "--quiet",
"--encoding", "UTF-8", "-m",
IkiWiki::possibly_foolish_untaint(commitmessage(%params)),
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$config{srcdir}) != 0) {
my $conflict=readfile("$config{srcdir}/$params{file}");
if (system("svn", "revert", "--quiet", "$config{srcdir}/$params{file}") != 0) {
warn("svn revert failed\n");
}
return $conflict;
}
}
return undef # success
}
sub rcs_commit_staged (@) {
# Commits all staged changes. Changes can be staged using rcs_add,
# rcs_remove, and rcs_rename.
my %params=@_;
if (system("svn", "commit", "--quiet",
"--encoding", "UTF-8", "-m",
IkiWiki::possibly_foolish_untaint(commitmessage(%params)),
$config{srcdir}) != 0) {
warn("svn commit failed\n");
return 1; # failure
}
return undef # success
}
sub rcs_add ($) {
# filename is relative to the root of the srcdir
my $file=shift;
if (-d "$config{srcdir}/.svn") {
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my $parent=IkiWiki::dirname($file);
while (! -d "$config{srcdir}/$parent/.svn") {
$file=$parent;
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$parent=IkiWiki::dirname($file);
}
if (system("svn", "add", "--quiet", "$config{srcdir}/$file") != 0) {
warn("svn add failed\n");
}
}
}
sub rcs_remove ($) {
# filename is relative to the root of the srcdir
my $file=shift;
if (-d "$config{srcdir}/.svn") {
if (system("svn", "rm", "--force", "--quiet", "$config{srcdir}/$file") != 0) {
warn("svn rm failed\n");
}
}
}
sub rcs_rename ($$) {
# filenames relative to the root of the srcdir
my ($src, $dest)=@_;
if (-d "$config{srcdir}/.svn") {
# Add parent directory for $dest
my $parent=IkiWiki::dirname($dest);
if (! -d "$config{srcdir}/$parent/.svn") {
while (! -d "$config{srcdir}/$parent/.svn") {
$parent=IkiWiki::dirname($dest);
}
if (system("svn", "add", "--quiet", "$config{srcdir}/$parent") != 0) {
warn("svn add $parent failed\n");
}
}
if (system("svn", "mv", "--force", "--quiet",
"$config{srcdir}/$src", "$config{srcdir}/$dest") != 0) {
warn("svn rename failed\n");
}
}
}
sub rcs_recentchanges ($) {
my $num=shift;
my @ret;
return unless -d "$config{srcdir}/.svn";
eval q{
use Date::Parse;
use XML::SAX;
use XML::Simple;
};
error($@) if $@;
# avoid using XML::SAX::PurePerl, it's buggy with UTF-8 data
my @parsers = map { ${$_}{Name} } @{XML::SAX->parsers()};
do {
$XML::Simple::PREFERRED_PARSER = pop @parsers;
} until $XML::Simple::PREFERRED_PARSER ne 'XML::SAX::PurePerl';
# --limit is only supported on Subversion 1.2.0+
my $svn_version=`svn --version -q`;
my $svn_limit='';
$svn_limit="--limit $num"
if $svn_version =~ /\d\.(\d)\.\d/ && $1 >= 2;
my $svn_url=svn_info("URL", $config{srcdir});
my $xml = XMLin(scalar `svn $svn_limit --xml -v log '$svn_url'`,
ForceArray => [ 'logentry', 'path' ],
GroupTags => { paths => 'path' },
KeyAttr => { path => 'content' },
);
foreach my $logentry (@{$xml->{logentry}}) {
my (@pages, @message);
my $rev = $logentry->{revision};
my $user = $logentry->{author};
my $when=str2time($logentry->{date}, 'UTC');
foreach my $msgline (split(/\n/, $logentry->{msg})) {
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push @message, { line => $msgline };
}
my $committype="web";
if (defined $message[0] &&
$message[0]->{line}=~/$config{web_commit_regexp}/) {
$user=defined $2 ? "$2" : "$3";
$message[0]->{line}=$4;
}
else {
$committype="svn";
}
foreach my $file (keys %{$logentry->{paths}}) {
if (length $config{svnpath}) {
next unless $file=~/^\/\Q$config{svnpath}\E\/([^ ]+)(?:$|\s)/;
$file=$1;
}
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my $diffurl=defined $config{diffurl} ? $config{diffurl} : "";
$diffurl=~s/\[\[file\]\]/$file/g;
$diffurl=~s/\[\[r1\]\]/$rev - 1/eg;
$diffurl=~s/\[\[r2\]\]/$rev/g;
push @pages, {
page => pagename($file),
diffurl => $diffurl,
} if length $file;
}
push @ret, {
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rev => $rev,
user => $user,
committype => $committype,
when => $when,
message => [@message],
pages => [@pages],
} if @pages;
return @ret if @ret >= $num;
}
return @ret;
}
sub rcs_diff ($;$) {
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my $rev=IkiWiki::possibly_foolish_untaint(int(shift));
my $maxlines=shift;
return `svnlook diff $config{svnrepo} -r$rev --no-diff-deleted`;
}
{
my ($lastfile, $lastmtime, $lastctime);
sub findtimes ($) {
my $file=shift;
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if (defined $lastfile && $lastfile eq $file) {
return $lastmtime, $lastctime;
}
$lastfile=$file;
my $svn_log_infoline=qr/^r\d+\s+\|\s+[^\s]+\s+\|\s+(\d+-\d+-\d+\s+\d+:\d+:\d+\s+[-+]?\d+).*/;
my $child = open(SVNLOG, "-|");
if (! $child) {
exec("svn", "log", "$config{srcdir}/$file") || error("svn log failed to run");
}
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my ($cdate, $mdate);
while (<SVNLOG>) {
if (/$svn_log_infoline/) {
$cdate=$1;
$mdate=$1 unless defined $mdate;
}
}
close SVNLOG || error "svn log exited $?";
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if (! defined $cdate) {
error "failed to parse svn log for $file";
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}
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eval q{use Date::Parse};
error($@) if $@;
$lastctime=str2time($cdate);
$lastmtime=str2time($mdate);
return $lastmtime, $lastctime;
}
}
sub rcs_getctime ($) {
my $file=shift;
return (findtimes($file))[1];
}
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sub rcs_getmtime ($) {
my $file=shift;
return (findtimes($file))[0];
}
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