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github.com_openSUSE_osc/osc_expand_link.pl
Jürgen Weigert 06603f3fcb typo.
2008-03-26 19:24:05 +00:00

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#! /usr/bin/perl -w
#
# osc_expand_link.pl -- a tool to help osc build packages where an _link exists.
# (C) 2006 jw@suse.de, distribute under GPL v2.
#
# 2006-12-12, jw
# 2006-12-15, jw, v0.2 -- {files}{error} gets printed if present.
# 2008-03-25, jw, v0.3 -- go via api using iChains and ~/.oscrc
# 2008-03-26, jw, v0.4 -- added linked file retrieval and usage.
use Data::Dumper;
use LWP::UserAgent;
use HTTP::Status;
use Digest::MD5;
my $version = '0.4';
my $verbose = 1;
# curl buildservice:5352/source/home:jnweiger/vim
# curl 'buildservice:5352/source/home:jnweiger/vim?rev=d90bfab4301f758e0d82cf09aa263d37'
# curl 'buildservice:5352/source/home:jnweiger/vim/vim.spec?rev=d90bfab4301f758e0d82cf09aa263d37'
my $cfg = {
apiurl => slurp_file(".osc/_apiurl", 1),
package => slurp_file(".osc/_package", 1),
project => slurp_file(".osc/_project", 1),
files => xml_slurp_file(".osc/_files", { container => 'directory', attr => 'merge' }),
link => xml_slurp_file(".osc/_link", { container => 'link', attr => 'merge' }),
};
{
package CredUserAgent;
@ISA = qw(LWP::UserAgent);
sub new
{
my $self = LWP::UserAgent::new(@_);
$self->agent("osc_expand_link.pl/$version");
$self;
}
sub get_basic_credentials
{
my ($self, $realm, $uri) = @_;
my $netloc = $uri->host_port;
unless ($self->{auth})
{
print STDERR "Auth for $realm at $netloc\n";
unless (open IN, "<", "$ENV{HOME}/.oscrc")
{
print STDERR "$ENV{HOME}/.oscrc: $!\n";
return (undef, undef);
}
while (defined (my $line = <IN>))
{
chomp $line;
$self->{auth}{pass} = $1 if $line =~ m{^pass\s*=\s*(\S+)};
$self->{auth}{user} = $1 if $line =~ m{^user\s*=\s*(\S+)};
}
close IN;
print STDERR "~/.oscrc: user=$self->{auth}{user}\n";
}
return ($self->{auth}{user},$self->{auth}{pass});
}
}
my $ua = CredUserAgent->new (keep_alive => 1);
sub cred_get
{
my ($url) = @_;
my $r = $ua->get($url);
die "$url: " . $r->status_line . "\n" unless $r->is_success;
return $r->content;
}
sub cred_getstore
{
my ($url, $file) = @_;
my $r = $ua->get($url, ':content_file' => $file);
die "$url: " . $r->status_line . "\n" unless $r->is_success;
$r->code;
}
$cfg->{apiurl} ||= 'https://api.opensuse.org';
$cfg->{project} ||= '<Project>';
$cfg->{package} ||= '<Package>';
chomp $cfg->{apiurl};
chomp $cfg->{project};
chomp $cfg->{package};
my $source = "$cfg->{apiurl}/source";
my $url = "$source/$cfg->{project}/$cfg->{package}";
if (my $url = $ARGV[0])
{
die qq{osc_expand_link $version;
Usage:
osc co $cfg->{project} $cfg->{package}
cd $cfg->{project}/$cfg->{package}
$0
to resolve a _link.
or
$0 $cfg->{apiurl}/source/$cfg->{project}/$cfg->{package}
to review internal buildservice data.
or
$0 $cfg->{apiurl}/source/$cfg->{project}/$cfg->{package}/linked/\\*.spec
cd $cfg->{project}/$cfg->{package}
$0 linked \\*.spec
to retrieve the original specfile behind a link.
} if $url =~ m{^-};
$url = "$url/$ARGV[1]" if $url eq 'linked' and $ARGV[1];
if ($url =~ m{^(.*/)?linked/(.*)$})
{
$url = (defined $1) ? $1 : "$cfg->{project}/$cfg->{package}";
my $file = $2;
$url = "$source/$url" if $cfg->{apiurl} and $url !~ m{://};
print STDERR "$url\n";
my $dir = xml_parse(cred_get($url), 'merge');
my $li = $dir->{directory}{linkinfo} || die "no linkinfo in $url\n";
$url = "$source/$li->{project}/$li->{package}";
mkdir("linked");
if ($file =~ m{\*})
{
my $dir = xml_parse(cred_get($url), 'merge');
$dir = $dir->{directory} if $dir->{directory};
my @list = sort map { $_->{name} } @{$dir->{entry}};
my $file_re = "\Q$file\E"; $file_re =~ s{\\\*}{\.\*}g;
my @match = grep { $_ =~ m{^$file_re$} } @list;
die "pattern $file not found in\n @list\n" unless @match;
$file = $match[0];
}
$url .= "/$file";
print STDERR "$url -> linked/$file\n";
my $r = cred_getstore($url, "linked/$file");
print STDERR " Error: $r\n" if $r != RC_OK;
exit 0;
}
$url = "$cfg->{project}/$cfg->{package}/$url" unless $url =~ m{/};
$url = "$source/$url" if $cfg->{apiurl} and $url !~ m{://};
print cred_get($url);
exit 0;
}
warn "$cfg->{project}/$cfg->{package} error: $cfg->{files}{error}\n" if $cfg->{files}{error};
die "$cfg->{project}/$cfg->{package} has no _link\n" unless $cfg->{link};
die "$cfg->{project}/$cfg->{package} has no xsrcmd5\n" unless $cfg->{files}{xsrcmd5};
print STDERR "expanding link to $cfg->{link}{project}/$cfg->{link}{package}\n";
if (my $p = $cfg->{link}{patches})
{
$p = [ $p ] if ref $p ne 'ARRAY';
my @p = map { "$_->{apply}{name}" } @$p;
print STDERR "applied patches: " . join(',', @p) . "\n";
}
my $dir = xml_parse(cred_get("$url?rev=$cfg->{files}{xsrcmd5}"), 'merge');
$dir = $dir->{directory} if defined $dir->{directory};
$dir->{entry} = [ $dir->{entry} ] if ref $dir->{entry} ne 'ARRAY';
for my $file (@{$dir->{entry}})
{
if (-f $file->{name})
{
## check the md5sum of the existing file and be happy.
$md5 = Digest::MD5->new;
open IN, "<", $file->{name} or die "md5sum($file->{name} failed: $!";
$md5->addfile(*IN);
close IN;
if ($md5->hexdigest eq $file->{md5})
{
print STDERR " - $file->{name} (md5 unchanged)\n";
}
else
{
print STDERR "Modified: $file->{name}, please commit changes!\n";
}
next;
}
print STDERR " get $file->{name}";
# fixme: xsrcmd5 is obsolete.
# use <linkinfo project="openSUSE:Factory" package="avrdude" xsrcmd5="a39c2bd14c3ad5dbb82edd7909fcdfc4">
my $response = cred_getstore("$url/$file->{name}?rev=$cfg->{files}{xsrcmd5}", $file->{name});
print STDERR ($response == RC_OK) ? "\n" : " Error:$response\n";
}
exit 0;
##########################################################################
sub slurp_file
{
my ($path, $silent) = @_;
open IN, "<", $path or ($silent ? return undef : die "slurp_file($path) failed: $!\n");
my $body = join '', <IN>;
close IN;
return $body;
}
#################################################################
## xml parser imported from w3dcm.pl and somewhat expanded.
## 2006-12-15, jw
##
## xml_parse assumes correct container closing.
## Any </...> tag would closes an open <foo>.
## Thus xml_parse is not suitable for HTML.
##
sub xml_parse
{
my ($text, $attr) = @_;
my %xml;
my @stack = ();
my $t = \%xml;
#print "xml_parse: '$text'\n";
my @tags = find_tags($text);
for my $i (0 .. $#tags)
{
my $tag = substr $text, $tags[$i]->{offset}, $tags[$i]->{tag_len};
my $cdata = '';
my $s = $tags[$i]->{offset} + $tags[$i]->{tag_len};
if (defined $tags[$i+1])
{
my $l = $tags[$i+1]->{offset} - $s;
$cdata = substr $text, $s, $l;
}
else
{
$cdata = substr $text, $s;
}
# print "tag=$tag\n";
my $name = $1 if $tag =~ s{<([\?/]?[\w:-]+)\s*}{};
$tag =~ s{>\s*$}{};
my $nest = ($tag =~ s{[\?/]$}{}) ? 0 : 1;
my $close = ($name =~ s{^/}{}) ? 1 : 0;
# print "name=$name, attr='$tag', $close, $nest, '$cdata'\n";
my $x = {};
$x->{-cdata} .= $cdata if $nest;
xml_add_attr($x, $tag, $attr) unless $tag eq '';
if (!$close)
{
delete $t->{-cdata} if $t->{-cdata} and $t->{-cdata} =~ m{^\s*$};
unless ($t->{$name})
{
$t->{$name} = $x;
}
else
{
$t->{$name} = [ $t->{$name} ] unless ref $t->{$name} eq 'ARRAY';
push @{$t->{$name}}, $x;
}
}
if ($close)
{
$t = pop @stack;
}
elsif ($nest)
{
push @stack, $t;
$t = $x;
}
}
print "stack=", Data::Dumper::Dumper(\@stack) if $verbose > 2;
scalar_cdata($t);
return $t;
}
##
## reads a file formatted by xml_make, and returns a hash.
## The toplevel container is removed from that hash, if specified.
## A wildcard '*' can be specified to remove any toplevel container.
## Otherwise the name of the container must match precisely.
##
sub xml_slurp_file
{
my ($file, $opt) = @_;
unless (open IN, "<$file")
{
return undef unless $opt->{die};
die "xml_slurp($opt->{container}): cannot read $file: $!\n";
}
my $xml = join '', <IN>; close IN;
$xml = xml_parse($xml, $opt->{attr});
if (my $container = $opt->{container})
{
die "xml_slurp($file, '$container') malformed file, should have only one toplevel node.\n"
unless scalar keys %$xml == 1;
$container = (keys %$xml)[0] if $container eq '' or $container eq '*';
die "xml_slurp($file, '$container') toplevel tag missing or wrong.\n" unless $xml->{$container};
$xml = $xml->{$container};
}
return $xml;
}
sub xml_escape
{
my ($text) = @_;
## XML::Simple does just that:
$text =~ s{&}{&amp;}g;
$text =~ s{<}{&lt;}g;
$text =~ s{>}{&gt;}g;
$text =~ s{"}{&quot;}g;
return $text;
}
sub xml_unescape
{
my ($text) = @_;
## XX: Fimxe: we should handle some more escapes here...
## and better do it in a single pass.
$text =~ s{&#([\d]{3});}{chr $1}eg;
$text =~ s{&lt;}{<}g;
$text =~ s{&gt;}{>}g;
$text =~ s{&quot;}{"}g;
$text =~ s{&amp;}{&}g;
return $text;
}
##
## find all hashes, that contain exactly one key named '-cdata'
## and replace these hashes with the value of that key.
## These values are scalar when created by xml_parse(), hence the name.
##
sub scalar_cdata
{
my ($hash) = @_;
my $selftag = '.scalar_cdata_running';
return unless ref $hash eq 'HASH';
return if $hash->{$selftag};
$hash->{$selftag} = 1;
for my $key (keys %$hash)
{
my $val = $hash->{$key};
if (ref $val eq 'ARRAY')
{
for my $i (0..$#$val)
{
scalar_cdata($hash->{$key}[$i]);
}
}
elsif (ref $val eq 'HASH')
{
my @k = keys %$val;
if (scalar(@k) == 1 && ($k[0] eq '-cdata'))
{
$hash->{$key} = $hash->{$key}{-cdata};
}
else
{
delete $hash->{$key}{-cdata} if exists $val->{-cdata} && $val->{-cdata} =~ m{^\s*$};
scalar_cdata($hash->{$key});
}
}
}
delete $hash->{$selftag};
}
##
## find_tags -- a brute force tag finder.
## This code is robust enough to parse the weirdest HTML.
## An Array containing hashes of { offset, name, tag_len } is returned.
## CDATA is skipped, but can be determined from gaps between tags.
## The name parser may chop names, so XML-style tag names are
## unreliable.
##
sub find_tags
{
my ($text) = @_;
my $last = '';
my @tags;
my $inquotes = 0;
my $incomment = 0;
while ($text =~ m{(<!--|-->|"|>|<)(/?\w*)}g)
{
my ($offset, $what, $name) = (length $`, $1, $2);
if ($inquotes)
{
$inquotes = 0 if $what eq '"';
next;
}
if ($incomment)
{
$incomment = 0 if $what eq '-->';
next;
}
if ($what eq '"')
{
$inquotes = 1;
next;
}
if ($what eq '<!--')
{
$incomment = 1;
next;
}
next if $what eq $last; # opening and closing angular brackets are polar.
if ($what eq '>' and scalar @tags)
{
$tags[$#tags]{tag_len} = 1 + $offset - $tags[$#tags]{offset};
}
if ($what eq '<')
{
push @tags, {name => $name, offset => $offset };
}
$last = $what;
}
return @tags;
}
##
## how = undef: defaults to '-attr plain'
## how = '-attr plain': add the attributes as one scalar value to hash-element -attr
## how = '-attr hash': add the attributes as a hash-ref to hash-element -attr
## how = 'merge': add the attributes as direct hash elements. (This is irreversible)
##
## attributes are either space-separated, or delimited with '' or "".
sub xml_add_attr
{
my ($hash, $text, $how) = @_;
$how = 'plain' unless $how;
my $tag = '-attr'; $tag = $1 if $how =~ s{^\s*([\w_:-]+)\s+(.*)$}{$2};
$how = lc $how;
return $hash->{$tag} = $text if $how eq 'plain';
if ($how eq 'hash')
{
$hash = $hash->{$tag} = {};
$how = 'merge';
## fallthrough
}
if ($how eq 'merge')
{
while ($text =~ m{([\w_:-]+)\s*=("[^"]*"|'[^']'|\S*)\s*}g)
{
my ($key, $val) = ($1, $2);
$val =~ s{^"(.*)"$}{$1} unless $val =~ s{^'(.*)'$}{$1};
if (defined($hash->{$key}))
{
## redefinition. promote to array and push.
$hash->{$key} = [ $hash->{$key} ] unless ref $hash->{$key};
push @{$hash->{$key}}, $val;
}
else
{
$hash->{$key} = $val;
}
}
return $hash;
}
die "xml_expand_attr: unknown method '$how'\n";
}
#################################################################
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