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################################################################
#
# Copyright (c) 1995-2016 SUSE Linux Products GmbH
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or 3 as
# published by the Free Software Foundation.
#
# 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 (see the file COPYING); if not, write to the
# Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#
################################################################
package Build::SimpleXML;
use strict;
# very simple xml parser, just good enough to parse kiwi and _service files...
# can't use standard XML parsers, unfortunatelly, as the build script
# must not rely on external libraries
#
sub parse {
my ($xml, %opts) = @_;
my $record = $opts{'record'};
my $order = $opts{'order'};
my @nodestack;
my $node = {};
my $c = '';
my $xmllen = length($xml);
$xml =~ s/^\s*\<\?.*?\?\>//s;
while ($xml =~ /^(.*?)\</s) {
if ($1 ne '') {
$c .= $1;
$xml = substr($xml, length($1));
}
if (substr($xml, 0, 4) eq '<!--') {
die("bad xml, missing end of comment\n") unless $xml =~ s/.*?-->//s;
next;
}
my $elstart = length($xml);
die("bad xml\n") unless $xml =~ /(.*?\>)/s;
my $tag = $1;
$xml = substr($xml, length($tag));
my $mode = 0;
if ($tag =~ s/^\<\///s) {
chop $tag;
$mode = 1; # end
} elsif ($tag =~ s/\/\>$//s) {
$mode = 2; # start & end
$tag = substr($tag, 1);
} else {
$tag = substr($tag, 1);
chop $tag;
}
my @tag = split(/(=(?:\"[^\"]*\"|\'[^\']*\'|[^\"\s]*))?\s+/, "$tag ");
$tag = shift @tag;
shift @tag;
push @tag, undef if @tag & 1;
my %atts = @tag;
for (values %atts) {
next unless defined $_;
s/^=\"([^\"]*)\"$/=$1/s or s/^=\'([^\']*)\'$/=$1/s;
s/^=//s;
s/</</g;
s/>/>/g;
s/&/&/g;
s/'/\'/g;
s/"/\"/g;
}
if ($mode == 0 || $mode == 2) {
my $n = {};
if ($record) {
$n->{'_start'} = $xmllen - $elstart;
$n->{'_end'} = $xmllen - length($xml) if $mode == 2;
}
if ($order) {
push @{$node->{'_order'}}, $tag;
push @{$n->{'_order'}}, (splice(@tag, 0, 2))[0] while @tag;
}
push @{$node->{$tag}}, $n;
$n->{$_} = $atts{$_} for sort keys %atts;
if ($mode == 0) {
push @nodestack, [ $tag, $node, $c ];
$c = '';
$node = $n;
}
} else {
die("element '$tag' closes without open\n") unless @nodestack;
die("element '$tag' closes, but I expected '$nodestack[-1]->[0]'\n") unless $nodestack[-1]->[0] eq $tag;
$c =~ s/^\s*//s;
$c =~ s/\s*$//s;
$node->{'_content'} = $c if $c ne '';
$node->{'_end'} = $xmllen - length($xml) if $record;
$node = $nodestack[-1]->[1];
$c = $nodestack[-1]->[2];
pop @nodestack;
}
}
$c .= $xml;
$c =~ s/^\s*//s;
$c =~ s/\s*$//s;
$node->{'_content'} = $c if $c ne '';
return $node;
}
sub unparse_keys {
my ($d) = @_;
my @k = grep {$_ ne '_start' && $_ ne '_end' && $_ ne '_order' && $_ ne '_content'} sort keys %$d;
return @k unless $d->{'_order'};
my %k = map {$_ => 1} @k;
my @ko;
for (@{$d->{'_order'}}) {
push @ko, $_ if delete $k{$_};
}
return (@ko, grep {$k{$_}} @k);
}
sub unparse_escape {
my ($d) = @_;
$d =~ s/&/&/sg;
$d =~ s/</</sg;
$d =~ s/>/>/sg;
$d =~ s/"/"/sg;
return $d;
}
sub unparse {
my ($d, %opts) = @_;
my $r = '';
my $indent = $opts{'ugly'} ? '' : $opts{'indent'} || '';
my $nl = $opts{'ugly'} ? '' : "\n";
my @k = unparse_keys($d);
my @e = grep {ref($d->{$_}) ne ''} @k;
for my $e (@e) {
my $en = unparse_escape($e);
my $de = $d->{$e};
$de = [ $de ] unless ref($de) eq 'ARRAY';
for my $se (@$de) {
my @sk = unparse_keys($se);
my @sa = grep {ref($se->{$_}) eq ''} @sk;
my @se = grep {ref($se->{$_}) ne ''} @sk;
$r .= "$indent<$en";
for my $sa (@sa) {
$r .= " ".unparse_escape($sa);
$r .= '="'.unparse_escape($se->{$sa}).'"' if defined $se->{$sa};
}
$r .= ">";
$r .= unparse_escape($se->{'_content'}) if defined $se->{'_content'};
$r .= $nl . unparse($se, %opts, 'indent' => " $indent") . "$indent" if @se;
$r .= "</$en>$nl";
}
}
return $r;
}
1;
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