Data/Rap/Engine.pm

## ----------------------------------------------------------------------
##  $Id: Engine.pm,v 1.3 2003/02/21 01:46:17 joko Exp $
## ----------------------------------------------------------------------
##  $Log: Engine.pm,v $
##  Revision 1.3  2003/02/21 01:46:17  joko
##  renamed core function
##
##  Revision 1.2  2003/02/20 19:46:33  joko
##  renamed and revamped some of modules
##  renamed methods
##  + sub run_executable
##
##  Revision 1.1  2003/02/18 15:35:25  joko
##  + initial commit
##
## ----------------------------------------------------------------------


package Data::Rap::Engine;

use strict;
use warnings;


use Data::Dumper;
use Hash::Merge qw( merge );
use Iterate;

use shortcuts qw( run_cmd );
use Data::Code::Ref qw( ref_slot );
use Data::Transform::Deep qw( expand );


sub performTarget {
  my $self = shift;
  my $targetname = shift;
  $self->perform_target($targetname);
}

sub perform_target {
  my $self = shift;
  my $targetname = shift;

  my $header = ("- " x 12) . "   " . $targetname . "   " . ("- " x 6);
  
  #$self->log("- " x 35, 'notice');
  #$self->log("Performing Target '$targetname'.", 'notice');

  $self->log($header, 'notice');

  #exit;

  my $target = $self->getTargetDetails($targetname);

  # trace
    #print Dumper($target);
    #exit;
    
  $self->perform_dependencies($target);
  $self->perform_details($target);

}

sub perform_dependencies {
  my $self = shift;
  my $target = shift;
  # resolve dependencies (just run prior)
  if (my $targetname_dep = $target->{attrib}->{depends}) {
    my @targets = split(/,\s|,/, $targetname_dep);
    #print Dumper(@targets);
    #$self->perform($targetname_dep);
    #delete $target->{attrib}->{depends};
    foreach (@targets) {
      if (!$self->{__rap}->{dependencies}->{resolved}->{$_}++) {
        $self->perform_target($_);
      }
    }
    delete $target->{attrib}->{depends};
  }
}

sub perform_details {
  my $self = shift;
  my $target = shift;
  
  #print Dumper($target);
  #exit;
  
  foreach my $entry (@{$target->{content}}) {
    my $command = $entry->{name};
    my $args = $entry->{attrib};
    $self->perform_command($command, $args);
    # check recursiveness
    if ($entry->{content} && ref $entry->{content}) {
      $self->perform_details($entry);
    }
  }
}

sub rc {
  my $self = shift;
  return $self->perform_command(@_);
}

sub perform_command {
  my $self = shift;
  my $command = shift;

  if (!$command) {
    $self->log("Command was empty!", 'debug');
    return;
  }

  # FIXME: make '__PACKAGE__' go one level deeper properly!
  $self->log( __PACKAGE__ . "->perform_command: " . $command, 'debug');
  
  my $args_list = shift;
  my $args = {};
  #print Dumper($args_list);
  if ($args_list) {
    if (ref $args_list eq 'ARRAY') {
      foreach (@$args_list) {
        $args = merge($args, $_);
      }
    } else {
      $args = $args_list;
    }
  }
  $command = '_' . $command;
  
  
  # determine container
  my $container; # = $self->getInstance();
  $container ||= $self;
  
  if ($container->can($command)) {
    $container->$command($args);
  } else {
    $self->log("Command '$command' not implemented.", "warning");
  }
  
}


sub merge_properties {
  my $self = shift;
  my $name = shift;
  my $data = shift;

  $self->log("merge-name: $name");
  #print "name: $name", "\n";
  #print Dumper($data);
  #exit;

  # check if slot (or childs of it) is/are already occupied
  #if (my $data_old = ref_slot($self, $name, undef, '.')) {
  if (my $data_old = $self->get_property($name)) {
    #print "old:", "\n";
    #print Dumper($data_old);
    
    # FIXME: review - any options for 'merge' here?
    my $data_new = merge($data_old, $data);
    #print "DATA NEE! - MERGE!", "\n";
    #print Dumper($data_new);
    #exit;
    #merge_to($self, $data_new);
    $self->set_property( { name => $name, value => $data_new } );
    
  } else {

=pod    
    # make up a dummy hash matching the structure of the destination one
      my $dummy = {};
      ref_slot($dummy, $name, $data, '.');
      print Dumper($dummy);
    
    # mix into destination
      mixin($self, $dummy, { init => 1 });
=cut

      ref_slot($self, $name, $data, '.');

  }
  
  
  #print Dumper($self);
  #exit;
  #$self->

}

sub set_property {
  my $self = shift;
  my $args = shift;

  $self->interpolate($args) ;
  my $name = $args->{name};
  my $value = $args->{value};
  $name = '__rap.properties.' . $name;

  $self->log("set-name: $name");

  # fill property slot with given value
  if ($value) {
    ref_slot($self, $name, $value, '.');
  }
  
  #print Dumper($self);
  
  # FIXME!!!
  #return if ! ref $args;

  # fill property slot with (probably bigger) data structure from property-/configuration-style - file
  if (my $file = $args->{file}) {
    my $type = $args->{type};
    if (!$type) {
      die("default file (no type specified) is not implemented yet!");
    
    } elsif ($type eq 'perl-eval') {
      #die($type);
      $self->loadFromPerlFile($file, $name, $args->{'varnames'});
      
    } elsif ($type eq 'App::Config') {
      die("not implemented: $type");
      
    }

  } elsif (my $command = $args->{command}) {
    $self->perform_command($command, $args);
  
  }

}

sub get_property {
  my $self = shift;
  #my $args = shift;
  my $name = shift;

  #$self->interpolate($args);

  #my $name = $args->{name};
  my $result;

  if (!$name) {
    $self->log( __PACKAGE__ . ": no name!", 'critical');
    
  } elsif ($name eq '/') {
    $result = expand($self);

  } elsif ($name eq '.') {
    if (my $instance = $self->getInstance()) {
      $result = expand($instance);
    } else {
      $result = ref_slot($self, '__rap.properties', undef, '.');
      
    }

  } else {

    $name = '__rap.properties.' . $name;
    
    $self->log("get-name: $name");
    
    # get property slot and return value
    $result = ref_slot($self, $name, undef, '.');
    
    # FIXME: Is this okay? It's provided for now in order not
    # to deliver an 'undef' to the regex below inside 'interpolate'.
    # revamp this, maybe!
    #$result ||= '';    # NO!!!
  }
  
  return $result;
}

sub interpolate {
  my $self = shift;
  my $ref = shift;
  IterHash %$ref, sub {
    #print $_[1], "\n";
    $_[1] =~ s/\${(.+)}/$self->get_property($1)/e;
  }
}

sub run_executable {
  my $self = shift;
  my $opts = shift;

  if ($opts->{executable}) {

    my $program = $opts->{executable};
    delete $opts->{executable};

    my @buf;
    foreach (keys %$opts) {
      my $value = $opts->{$_};
      if (m/^_/) {
        if ($_ eq '_switches') {
          my @switches = split(/,\s|,/, $value);
          foreach my $switch (@switches) {
            push @buf, '--' . $switch;
          }
        }
        next;
      }
      
      if ($value =~ /\s/) {
        $value = "\"$value\"";
      }
      push @buf, "--$_=$value";
    }
  
    my $cmd = $program . ' ' . join(' ', @buf);
    
    # trace
      #print "command: $cmd", "\n";
    
    # start process
      # V1: via shortcut
      #$ENV{PERL5LIB} = join(' ', @INC);
      
      # FIXME!!! what about the other slots of @INC?
      $ENV{PERL5LIB} = $INC[0];
      
      #print Dumper(%ENV);
      run_cmd($cmd);
      # V2: via IPC::Run
      # ....  (TODO)
    
    
  }
  
}


1;
__END__
1	joko	1.1	## ----------------------------------------------------------------------
2	joko	1.4	## $Id: Engine.pm,v 1.3 2003/02/21 01:46:17 joko Exp $
3	joko	1.1	## ----------------------------------------------------------------------
4	joko	1.2	## $Log: Engine.pm,v $
5	joko	1.4	## Revision 1.3 2003/02/21 01:46:17 joko
6			## renamed core function
7			##
8	joko	1.3	## Revision 1.2 2003/02/20 19:46:33 joko
9			## renamed and revamped some of modules
10			## renamed methods
11			## + sub run_executable
12			##
13	joko	1.2	## Revision 1.1 2003/02/18 15:35:25 joko
14			## + initial commit
15			##
16	joko	1.1	## ----------------------------------------------------------------------
17
18
19			package Data::Rap::Engine;
20
21			use strict;
22			use warnings;
23
24
25			use Data::Dumper;
26	joko	1.2	use Hash::Merge qw( merge );
27	joko	1.1	use Iterate;
28	joko	1.2
29			use shortcuts qw( run_cmd );
30			use Data::Code::Ref qw( ref_slot );
31			use Data::Transform::Deep qw( expand );
32	joko	1.1
33
34			sub performTarget {
35			my $self = shift;
36			my $targetname = shift;
37	joko	1.2	$self->perform_target($targetname);
38			}
39
40			sub perform_target {
41			my $self = shift;
42			my $targetname = shift;
43
44	joko	1.4	my $header = ("- " x 12) . " " . $targetname . " " . ("- " x 6);
45
46			#$self->log("- " x 35, 'notice');
47			#$self->log("Performing Target '$targetname'.", 'notice');
48
49			$self->log($header, 'notice');
50	joko	1.2
51			#exit;
52
53			my $target = $self->getTargetDetails($targetname);
54	joko	1.1
55			# trace
56			#print Dumper($target);
57			#exit;
58
59	joko	1.2	$self->perform_dependencies($target);
60			$self->perform_details($target);
61
62			}
63
64			sub perform_dependencies {
65			my $self = shift;
66			my $target = shift;
67	joko	1.1	# resolve dependencies (just run prior)
68			if (my $targetname_dep = $target->{attrib}->{depends}) {
69	joko	1.2	my @targets = split(/,\s\|,/, $targetname_dep);
70			#print Dumper(@targets);
71			#$self->perform($targetname_dep);
72			#delete $target->{attrib}->{depends};
73			foreach (@targets) {
74			if (!$self->{__rap}->{dependencies}->{resolved}->{$_}++) {
75			$self->perform_target($_);
76			}
77			}
78	joko	1.1	delete $target->{attrib}->{depends};
79			}
80	joko	1.2	}
81	joko	1.1
82	joko	1.2	sub perform_details {
83			my $self = shift;
84			my $target = shift;
85
86			#print Dumper($target);
87			#exit;
88
89	joko	1.1	foreach my $entry (@{$target->{content}}) {
90			my $command = $entry->{name};
91			my $args = $entry->{attrib};
92	joko	1.2	$self->perform_command($command, $args);
93			# check recursiveness
94			if ($entry->{content} && ref $entry->{content}) {
95			$self->perform_details($entry);
96			}
97	joko	1.1	}
98			}
99
100			sub rc {
101			my $self = shift;
102	joko	1.2	return $self->perform_command(@_);
103	joko	1.1	}
104
105	joko	1.2	sub perform_command {
106	joko	1.1	my $self = shift;
107			my $command = shift;
108	joko	1.2
109	joko	1.1	if (!$command) {
110	joko	1.4	$self->log("Command was empty!", 'debug');
111	joko	1.1	return;
112			}
113	joko	1.2
114			# FIXME: make '__PACKAGE__' go one level deeper properly!
115			$self->log( __PACKAGE__ . "->perform_command: " . $command, 'debug');
116	joko	1.1
117			my $args_list = shift;
118			my $args = {};
119			#print Dumper($args_list);
120			if ($args_list) {
121			if (ref $args_list eq 'ARRAY') {
122			foreach (@$args_list) {
123			$args = merge($args, $_);
124			}
125			} else {
126			$args = $args_list;
127			}
128			}
129			$command = '_' . $command;
130	joko	1.2
131
132			# determine container
133			my $container; # = $self->getInstance();
134			$container \|\|= $self;
135
136			if ($container->can($command)) {
137			$container->$command($args);
138	joko	1.1	} else {
139	joko	1.2	$self->log("Command '$command' not implemented.", "warning");
140	joko	1.1	}
141	joko	1.2
142	joko	1.1	}
143
144	joko	1.2
145			sub merge_properties {
146	joko	1.1	my $self = shift;
147	joko	1.2	my $name = shift;
148			my $data = shift;
149	joko	1.1
150	joko	1.2	$self->log("merge-name: $name");
151			#print "name: $name", "\n";
152			#print Dumper($data);
153			#exit;
154	joko	1.1
155	joko	1.2	# check if slot (or childs of it) is/are already occupied
156			#if (my $data_old = ref_slot($self, $name, undef, '.')) {
157			if (my $data_old = $self->get_property($name)) {
158			#print "old:", "\n";
159			#print Dumper($data_old);
160
161			# FIXME: review - any options for 'merge' here?
162			my $data_new = merge($data_old, $data);
163			#print "DATA NEE! - MERGE!", "\n";
164			#print Dumper($data_new);
165			#exit;
166	joko	1.3	#merge_to($self, $data_new);
167	joko	1.2	$self->set_property( { name => $name, value => $data_new } );
168
169	joko	1.1	} else {
170	joko	1.2
171			=pod
172			# make up a dummy hash matching the structure of the destination one
173			my $dummy = {};
174			ref_slot($dummy, $name, $data, '.');
175			print Dumper($dummy);
176
177			# mix into destination
178			mixin($self, $dummy, { init => 1 });
179			=cut
180
181			ref_slot($self, $name, $data, '.');
182
183	joko	1.1	}
184	joko	1.2
185
186			#print Dumper($self);
187			#exit;
188			#$self->
189
190			}
191	joko	1.1
192	joko	1.2	sub set_property {
193			my $self = shift;
194			my $args = shift;
195
196			$self->interpolate($args) ;
197			my $name = $args->{name};
198			my $value = $args->{value};
199			$name = '__rap.properties.' . $name;
200
201			$self->log("set-name: $name");
202	joko	1.1
203			# fill property slot with given value
204			if ($value) {
205	joko	1.2	ref_slot($self, $name, $value, '.');
206	joko	1.1	}
207
208	joko	1.2	#print Dumper($self);
209
210	joko	1.1	# FIXME!!!
211	joko	1.2	#return if ! ref $args;
212	joko	1.1
213			# fill property slot with (probably bigger) data structure from property-/configuration-style - file
214			if (my $file = $args->{file}) {
215			my $type = $args->{type};
216			if (!$type) {
217			die("default file (no type specified) is not implemented yet!");
218
219			} elsif ($type eq 'perl-eval') {
220			#die($type);
221			$self->loadFromPerlFile($file, $name, $args->{'varnames'});
222
223			} elsif ($type eq 'App::Config') {
224			die("not implemented: $type");
225
226			}
227
228			} elsif (my $command = $args->{command}) {
229	joko	1.2	$self->perform_command($command, $args);
230	joko	1.1
231			}
232
233			}
234
235			sub get_property {
236			my $self = shift;
237			#my $args = shift;
238			my $name = shift;
239
240			#$self->interpolate($args);
241
242			#my $name = $args->{name};
243	joko	1.2	my $result;
244
245			if (!$name) {
246			$self->log( __PACKAGE__ . ": no name!", 'critical');
247
248			} elsif ($name eq '/') {
249			$result = expand($self);
250
251			} elsif ($name eq '.') {
252			if (my $instance = $self->getInstance()) {
253			$result = expand($instance);
254			} else {
255			$result = ref_slot($self, '__rap.properties', undef, '.');
256
257			}
258	joko	1.1
259	joko	1.2	} else {
260
261			$name = '__rap.properties.' . $name;
262
263			$self->log("get-name: $name");
264
265			# get property slot and return value
266			$result = ref_slot($self, $name, undef, '.');
267
268			# FIXME: Is this okay? It's provided for now in order not
269			# to deliver an 'undef' to the regex below inside 'interpolate'.
270			# revamp this, maybe!
271			#$result \|\|= ''; # NO!!!
272			}
273	joko	1.1
274	joko	1.2	return $result;
275	joko	1.1	}
276
277			sub interpolate {
278			my $self = shift;
279			my $ref = shift;
280			IterHash %$ref, sub {
281			#print $_[1], "\n";
282			$_[1] =~ s/\${(.+)}/$self->get_property($1)/e;
283			}
284			}
285	joko	1.2
286			sub run_executable {
287			my $self = shift;
288			my $opts = shift;
289
290			if ($opts->{executable}) {
291
292			my $program = $opts->{executable};
293			delete $opts->{executable};
294
295			my @buf;
296			foreach (keys %$opts) {
297			my $value = $opts->{$_};
298	joko	1.4	if (m/^_/) {
299			if ($_ eq '_switches') {
300			my @switches = split(/,\s\|,/, $value);
301			foreach my $switch (@switches) {
302			push @buf, '--' . $switch;
303			}
304			}
305			next;
306			}
307
308	joko	1.2	if ($value =~ /\s/) {
309			$value = "\"$value\"";
310			}
311			push @buf, "--$_=$value";
312			}
313
314			my $cmd = $program . ' ' . join(' ', @buf);
315
316			# trace
317			#print "command: $cmd", "\n";
318
319			# start process
320			# V1: via shortcut
321			#$ENV{PERL5LIB} = join(' ', @INC);
322
323			# FIXME!!! what about the other slots of @INC?
324			$ENV{PERL5LIB} = $INC[0];
325
326			#print Dumper(%ENV);
327			run_cmd($cmd);
328			# V2: via IPC::Run
329			# .... (TODO)
330
331
332			}
333
334			}
335
336	joko	1.1
337			1;
338			__END__
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