1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
#--
# Copyright (c) 2006 Shawn Patrick Garbett
# Copyright (c) 2002,2004,2005 by Horst Duchene
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice(s),
# this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
# * Neither the name of the Shawn Garbett nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#++
#
# Minimal Dot support, based on Dave Thomas's dot module (included in rdoc).
# rdot.rb is a modified version which also contains support for undirected
# graphs.
require 'puppet/external/gratr/rdot'
module GRATR
module Graph
# Return a DOT::DOTDigraph for directed graphs or a DOT::DOTSubgraph for an
# undirected Graph. _params_ can contain any graph property specified in
# rdot.rb. If an edge or vertex label is a kind of Hash then the keys
# which match +dot+ properties will be used as well.
def to_dot_graph (params = {})
params['name'] ||= self.class.name.gsub(/:/,'_')
fontsize = params['fontsize'] ? params['fontsize'] : '8'
graph = (directed? ? DOT::DOTDigraph : DOT::DOTSubgraph).new(params)
edge_klass = directed? ? DOT::DOTDirectedEdge : DOT::DOTEdge
vertices.each do |v|
name = v.to_s
params = {'name' => '"'+name+'"',
'fontsize' => fontsize,
'label' => name}
v_label = vertex_label(v)
params.merge!(v_label) if v_label and v_label.kind_of? Hash
graph << DOT::DOTNode.new(params)
end
edges.each do |e|
params = {'from' => '"'+ e.source.to_s + '"',
'to' => '"'+ e.target.to_s + '"',
'fontsize' => fontsize }
e_label = edge_label(e)
params.merge!(e_label) if e_label and e_label.kind_of? Hash
graph << edge_klass.new(params)
end
graph
end
# Output the dot format as a string
def to_dot (params={}) to_dot_graph(params).to_s; end
# Call +dotty+ for the graph which is written to the file 'graph.dot'
# in the # current directory.
def dotty (params = {}, dotfile = 'graph.dot')
File.open(dotfile, 'w') {|f| f << to_dot(params) }
system('dotty', dotfile)
end
# Use +dot+ to create a graphical representation of the graph. Returns the
# filename of the graphics file.
def write_to_graphic_file (fmt='png', dotfile='graph')
src = dotfile + '.dot'
dot = dotfile + '.' + fmt
File.open(src, 'w') {|f| f << self.to_dot << "\n"}
system( "dot -T#{fmt} #{src} -o #{dot}" )
dot
end
end # module Graph
end # module GRATR
|
