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# url handler -> returns the location of the file
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#
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# Interface
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# ---------
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# new() :
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# new(cachedir) : A new urlhandler with a defined default cahce directory
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# get(url) : download from the specified url to the default cache
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# get(url,location) : dowload to the specified directory
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# setcvsco("checkout_cmd") : Default cvs is "co" change with this cmd
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# setbase(type,@args) : set the url defaults for a specific url type
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# arguments are dependent on type
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# http:
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# file:
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# cvs: servername,servertype [ ,user,passkey ]
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# label:
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# unsetbase(type) : deactivate a previously set base
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#
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# ----------------------------------------------------------------------
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# returns file location - or crashes out
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# can pass a file name for the item to be stored as
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# if not then stores in a default cache.
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package urlhandler;
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require 5.004;
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use Utilities::AddDir;
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sub new {
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my $class=shift;
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my $cache=shift;
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$self={};
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bless $self, $class;
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$self->init($cache);
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return $self;
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}
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sub init {
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use Utilities::AddDir;
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my $self=shift;
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my $cache=shift;
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if ($cache eq "" ) { $cache="/tmp/SCRAMcache" }; # default cache
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AddDir::adddir($cache);
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$self->{cache}=$cache;
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$self->{cvsco}="co";
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@{$self->{urltypes}} = qw(label file cvs http);
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}
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sub get ($@) {
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my $self=shift;
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my $origurl=shift;
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my $filename=shift;
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my $rest;
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my $type;
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my $url;
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my $version;
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chomp $origurl;
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# get our version info from the url (after last ??)
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( $url, $version) = split /\?\?/, $origurl;
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if ( $url=~/:/ ) {
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($type,$rest) = split /:/, $url;
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}
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else {
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$type='label';
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$rest=$url.":".$version;
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}
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foreach $ty ( @{$self->{urltypes}} ) {
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do { return &$ty($self, $rest, $filename); $supported='yes'; last;}
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, if $type eq $ty;
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}
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if ( ! ( $supported=~/yes/ )) {
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print "urlhandler: Unsupported type $type\n";
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exit 1;
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}
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}
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#
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# setcvsco --- to change nature of cvs co (e.g "export" rather than "co")
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#
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sub setcvsco {
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my $self=shift;
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$self->{cvsco}=shift;
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}
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sub setbase {
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my $self=shift;
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my $type=shift;
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my @args=@_;
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# Check type is supported
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if ( ! grep( $type, @{$self->{urltypes}}) ) {
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print "urlhandler error: Unsupported type $type\n";
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return 1;
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}
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else {
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&{$type."_setbase"}($self,@args);
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}
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}
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sub unsetbase {
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my $self=shift;
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my $type=shift;
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# Check type is supported
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if ( ! grep( $type, @{$self->{urltypes}}) ) {
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print "urlhandler error: Unsupported type $type\n";
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return 1;
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}
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else {
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&{$type."_unsetbase"}($self, @args);
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}
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}
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# ------------------------- Type Support Routines ----------------------------
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#
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# label:
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#
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sub label {
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my $self=shift;
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my $label=shift;
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my $filename=shift;
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my $returnval="";
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open ( LOOKUP, "$ENV{SCRAM_LOOKUPDB}" )
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|| die "urlhandler: Unable to open DataBase $ENV{SCRAM_LOOKUPDB} $!";
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while ( <LOOKUP> ) {
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next if /^#/;
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if ( $_=~s/^$label\:// ) {
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$returnval = urlhandler($_,$filename);
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}
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}
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close LOOKUP;
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if ( $returnval ne "" ) {
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return $returnval;
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}
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($proj,$ver)=split /:/, $label;
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print "Error : Unknown project name or version (".$proj." ".$ver.")\n";
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exit 1;
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}
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sub label_setbase {
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my $self=shift;
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}
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sub label_unsetbase {
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my $self=shift;
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}
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#
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# file:
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#
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sub file {
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my $self=shift;
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use File::Copy;
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my $urlfile=shift;
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my $filename=shift;
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if ( $self->{filebase} ne "" ) { # add a base if it exists
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$urlfile=$self->{filebase}."/".$urlfile;
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}
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if ( -e "$urlfile" ) {
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if ( $filename ne "" ) {
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copy ( $urlfile, $filename ) || return $urlfile;
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return $filename;
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}
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return $urlfile;
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}
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else {
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print "urlhandler: Unable to find file $urlfile : $!\n";
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exit 1;
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}
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}
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#
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#
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#
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sub file_setbase {
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my $self=shift;
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my $filebase=shift;
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if ( -d $filebase ) {
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$self->{filebase}=$filebase;
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push @{$self->{filebasestack}}, $self->{filebase};
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}
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else {
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die "Directory Does Not Exist \n";
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}
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}
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sub file_unsetbase {
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my $self=shift;
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pop @{$self->{filebasestack}};
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$self->{filebase}=@{$self->{filebasestack}}
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[$#{$self->{filebasestack}}];
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}
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#
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# cvs:
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#
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sub cvs {
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my $self=shift;
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my $url=shift;
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my $dirname=shift;
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my $cvscmd;
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my $module;
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my $version;
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# Where should we co to?
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if ( $dirname eq "" ) {
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$dirname=$self->{cache};
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}
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# Split up our url into its components
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($module, $version)= split /\?/, $url;
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if ( $version ne "" ) {
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$cvscmd=$self->{cvsco}." -r $version";
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}
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else {
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$cvscmd=$self->{cvsco}
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}
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#
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# Check to see we have a server and if so attempt the checkout
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#
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if ( ! defined $self->{cvsobject} ) {
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print "urlhandler error: undefined cvs server for $module\n";
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return 1;
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}
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else {
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chdir $dirname or die "Unable to Enter Directory $dirname $!\n";
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$self->{cvsobject}->invokecvs($cvscmd, $module);
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}
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}
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sub cvs_setbase {
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my $self=shift;
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my $base=shift;
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my $auth=shift;
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my $user=shift;
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my $passkey=shift;
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# Push a new cvs object onto the cvs stack
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$self->{cvsobject}=cvsmodule->new();
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push @{$self->{cvsobjectstack}},$self->{cvsobject};
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$self->{cvsobject}->set_base($base);
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$self->{cvsobject}->set_auth($auth);
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if ( $user ne "" ) {
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$self->{cvsobject}->set_user($user);
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}
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if ( $passkey ne "" ) {
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$self->{cvsobject}->set_passkey($passkey);
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}
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}
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sub cvs_unsetbase {
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my $self=shift;
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pop @{$self->{cvsobjectstack}};
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$self->{cvsobject}=@{$self->{cvsobjectstack}}
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[$#{$self->{cvsobjectstack}}];
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}
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#
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# http:
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#
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sub http {
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my $self=shift;
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my $urlfile=shift;
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my $filename=shift;
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# use LWP::Simple;
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print "Hello $filename, $urlfile\n";
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# open (STORE, ">$filename") || die "unable to open file $filename $!\n";
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# print STORE (get 'http:'.$urlfile);
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close STORE;
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}
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sub http_setbase {
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my $self=shift;
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}
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sub http_unsetbase {
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my $self=shift;
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}
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# ------------------------ General Support Routines ----------------------------
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sub cachefilename {
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my $self=shift;
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use File::Basename;
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use Utilities::AddDir;
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my $filebase=dirname($rest);
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$cache="/tmp/williamc/urlhandler$$";
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adddir($cache);
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$filename=$cache."/".$filebase;
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}
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