/usr/lib/python3/dist-packages/nwdiag/builder.py is in python3-nwdiag 1.0.3-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 | # -*- coding: utf-8 -*-
# Copyright 2011 Takeshi KOMIYA
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from collections import namedtuple
from nwdiag import parser
from nwdiag.elements import (Diagram, DiagramNode, DiagramEdge,
Network, Route, NodeGroup)
from blockdiag.utils import unquote, XY
class DiagramTreeBuilder:
def build(self, tree):
self.diagram = Diagram()
self.instantiate(None, None, tree)
for network in self.diagram.networks:
nodes = [n for n in self.diagram.nodes if network in n.networks]
if len(nodes) == 0:
self.diagram.networks.remove(network)
for i, network in enumerate(self.diagram.networks):
network.xy = XY(0, i)
for subgroup in self.diagram.groups:
if len(subgroup.nodes) == 0:
self.diagram.groups.remove(subgroup)
for node in self.diagram.nodes:
if len(node.networks) == 0:
msg = "DiagramNode %s does not belong to any networks"
raise RuntimeError(msg % node.id)
# show networks including same nodes
for nw in self.diagram.networks:
if nw.hidden and len(nw.nodes) == 2:
nodes = nw.nodes
is_same = lambda x: set(nodes) & set(x.nodes) == set(nodes)
for n in self.diagram.networks:
if n != nw and is_same(n):
nw.hidden = False
break
# show network for multiple peer networks from same node
nodes = []
for nw in self.diagram.networks:
if nw.hidden and len(nw.nodes) == 2:
nodes.append(nw.nodes[0]) # parent node (FROM node)
for node in [n for n in set(nodes) if nodes.count(n) > 1]:
for network in node.networks:
if len(network.nodes) == 2:
network.hidden = False
return self.diagram
def instantiate(self, network, group, tree):
for stmt in tree.stmts:
if isinstance(stmt, parser.Node):
node = DiagramNode.get(stmt.id)
node.set_attributes(network, stmt.attrs)
if group:
if (node.group and node.group != self.diagram and
(group != node.group)):
msg = "DiagramNode could not belong to two groups"
raise RuntimeError(msg)
node.group = group
group.nodes.append(node)
elif node.group is None:
node.group = self.diagram
if network is not None:
if network not in node.networks:
node.networks.append(network)
if node not in network.nodes:
network.nodes.append(node)
if node not in self.diagram.nodes:
self.diagram.nodes.append(node)
elif isinstance(stmt, parser.Network):
subnetwork = Network.get(stmt.id)
subnetwork.label = stmt.id
if subnetwork not in self.diagram.networks:
self.diagram.networks.append(subnetwork)
substmt = namedtuple('Statements', 'stmts')([])
for s in stmt.stmts:
if isinstance(s, parser.Attr):
subnetwork.set_attribute(s)
else:
substmt.stmts.append(s)
self.instantiate(subnetwork, group, substmt)
elif isinstance(stmt, parser.Group):
subgroup = NodeGroup.get(stmt.id)
if subgroup not in self.diagram.groups:
self.diagram.groups.append(subgroup)
substmt = namedtuple('Statements', 'stmts')([])
for s in stmt.stmts:
if isinstance(s, parser.Attr):
subgroup.set_attribute(s)
else:
substmt.stmts.append(s)
self.instantiate(network, subgroup, substmt)
elif isinstance(stmt, parser.Peer):
nodes = []
for edge in stmt.edges:
nodes.append(DiagramNode.get(edge.from_node))
nodes.append(DiagramNode.get(edge.to_node))
for node in nodes:
if node.group is None:
node.group = self.diagram
if node not in self.diagram.nodes:
self.diagram.nodes.append(node)
if len(nodes[0].networks) == 0:
nw = Network.create_anonymous([nodes[0]])
if nw:
self.diagram.networks.append(nw)
for edge in stmt.edges:
from_node = DiagramNode.get(edge.from_node)
to_node = DiagramNode.get(edge.to_node)
_nodes = [from_node, to_node]
nw = Network.create_anonymous(_nodes, edge.attrs)
if nw:
self.diagram.networks.append(nw)
elif isinstance(stmt, parser.Route):
nodes = [DiagramNode.get(n) for n in stmt.nodes]
for node1, node2 in zip(nodes[:-1], nodes[1:]):
route = Route(node1, node2)
route.set_attributes(stmt.attrs)
self.diagram.routes.append(route)
elif isinstance(stmt, parser.Attr):
self.diagram.set_attribute(stmt)
elif isinstance(stmt, parser.Extension):
if stmt.type == 'class':
name = unquote(stmt.name)
Diagram.classes[name] = stmt
elif stmt.type == 'plugin':
self.diagram.set_plugin(stmt.name, stmt.attrs)
elif isinstance(stmt, parser.Statements):
self.instantiate(network, group, stmt)
return network
class DiagramLayoutManager:
def __init__(self, diagram):
self.diagram = diagram
self.coordinates = []
def run(self):
self.do_layout()
self.diagram.fixiate()
def do_layout(self):
self.layout_nodes()
self.set_network_size()
def layout_nodes(self, group=None):
networks = self.diagram.networks
if group:
nodes = (n for n in self.diagram.nodes if n.group == group)
else:
nodes = self.diagram.nodes
for node in nodes:
if node.layouted:
continue
joined = [g for g in node.networks if g.hidden is False]
y1 = min(networks.index(g) for g in node.networks)
if joined:
y2 = max(networks.index(g) for g in joined)
else:
y2 = y1
if node.group and node.group != self.diagram and group:
starts = min(n.xy.x for n in group.nodes if n.layouted)
else:
nw = [n for n in node.networks if n.xy.y == y1][0]
nodes = [n for n in self.diagram.nodes if nw in n.networks]
layouted = [n for n in nodes if n.xy.x > 0]
starts = 0
if layouted:
layouted.sort(key=lambda a: a.xy.x)
basenode = layouted[0]
commonnw = set(basenode.networks) & set(node.networks)
if basenode.xy.y == y1:
starts = basenode.xy.x + 1
elif commonnw and list(commonnw)[0].hidden is True:
starts = basenode.xy.x
else:
starts = basenode.xy.x + 1 - len(nodes)
if starts < 0:
starts = 0
for x in range(starts, len(self.diagram.nodes)):
points = [XY(x, y) for y in range(y1, y2 + 1)]
if not set(points) & set(self.coordinates):
node.xy = XY(x, y1)
node.layouted = True
self.coordinates += points
break
if node.group and node.group != self.diagram and group is None:
self.layout_nodes(node.group)
if group:
self.set_coordinates(group)
def set_coordinates(self, group):
self.set_group_size(group)
xy = group.xy
for i in range(xy.x, xy.x + group.colwidth):
for j in range(xy.y, xy.y + group.colheight):
self.coordinates.append(XY(i, j))
def set_network_size(self):
for network in self.diagram.networks:
nodes = [n for n in self.diagram.nodes if network in n.networks]
nodes.sort(key=lambda a: a.xy.x)
x0 = min(n.xy.x for n in nodes)
network.xy = XY(x0, network.xy.y)
x1 = max(n.xy.x for n in nodes)
network.colwidth = x1 - x0 + 1
def set_group_size(self, group):
nodes = list(group.nodes)
nodes.sort(key=lambda a: a.xy.x)
x0 = min(n.xy.x for n in nodes)
y0 = min(n.xy.y for n in nodes)
group.xy = XY(x0, y0)
x1 = max(n.xy.x for n in nodes)
y1 = max(n.xy.y for n in nodes)
group.colwidth = x1 - x0 + 1
group.colheight = y1 - y0 + 1
class ScreenNodeBuilder:
@classmethod
def build(cls, tree):
DiagramNode.clear()
DiagramEdge.clear()
NodeGroup.clear()
Network.clear()
diagram = DiagramTreeBuilder().build(tree)
DiagramLayoutManager(diagram).run()
diagram = cls.update_network_status(diagram)
return diagram
@classmethod
def update_network_status(cls, diagram):
for node in diagram.nodes:
above = [nw for nw in node.networks if nw.xy.y <= node.xy.y]
if len(above) > 1 and [nw for nw in above if nw.hidden]:
for nw in above:
nw.hidden = False
below = [nw for nw in node.networks if nw.xy.y > node.xy.y]
if len(below) > 1 and [nw for nw in below if nw.hidden]:
for nw in below:
nw.hidden = False
return diagram
|