-
Notifications
You must be signed in to change notification settings - Fork 44
/
ExtGraph.py
444 lines (318 loc) · 13.9 KB
/
ExtGraph.py
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
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
# coding=utf8
'''
Copyright (R) 2015 Vincent.H <[email protected]>
Published under Apache 2.0 License (http://www.apache.org/licenses/LICENSE-2.0.html).
-------------------------------------------------------------------------------------
This module define the extended functions of graph data.
The core class base on the PyDot project. (https://github.com/erocarrera/pydot)
'''
import pydot
import wx, sys
import ExtParser
from DEUtils import to_unicode, add_double_quote,\
remove_double_quote
import tempfile
import DEUtils
TEMP_IMG_FILE = tempfile.gettempdir()+'/de_tempimg'
TEMPLATE_DOT = DEUtils.resource_path('GraphTemplate.dot')
INIT_SCRIPT = '''
digraph G {
rankdir=LR;
node [fontname="serif"];
edge [fontname="serif"];
}
'''
INIT_SCRIPT_SUBGRAPH = '''
graph G {
node [comment="subgraph node wildcard"];
edge [comment="subgraph edge wildcard"];
}
'''
class ExtGraph(pydot.Dot):
__bitmap = None
__historys = []
__history_point = -1
def __init__(self, graph_name='G', obj_dict=None, template_file=None):
pydot.Dot.__init__(self, graph_name=graph_name, obj_dict=obj_dict)
# If create empty new graph...
if (obj_dict is None):
### Some default setting.
try:
if template_file is None:
g = ExtParser.parse_file(TEMPLATE_DOT)
else:
g = ExtParser.parse_file(template_file)
except:
g = ExtParser.parse_string(INIT_SCRIPT)
self.obj_dict = g.obj_dict
# If create graph from parsing program...
else:
# Now check if wildcard nodes existed in every graph and subgraph.
self.__check_wildcard_existed()
### Important!!! To make "pydot.Graph.toString()" working correct.
self.set_parent_graph(self)
### -------------------------------------------------------------
self.refresh_bitmap()
return
def __check_wildcard_existed(self, root_graph=None):
'''Check if wildcard nodes existed in root_graph and all subgraph.'''
if root_graph is None:
root_graph = self
for n_name in ['node', 'edge']:
node = self.EG_get_node_by_name(n_name, root_graph)
if node is None:
n = pydot.Node(n_name)
n.set_comment('Wildcard node added automatic in EG.')
root_graph.add_node(n)
### Anyway, push the wildcard node to the front of all other nodes.
if n_name == 'node':
root_graph.obj_dict['nodes']['node'][0]['sequence'] = 0.5
else:
root_graph.obj_dict['nodes']['edge'][0]['sequence'] = 0
### -------------------------------------------------------------
sgs = root_graph.get_subgraphs()
for sg in sgs:
self.__check_wildcard_existed(sg)
return
def create_empty_subgraph(self, name):
sg = pydot.Subgraph()
sg.set_name(name)
g = ExtParser.parse_string(INIT_SCRIPT_SUBGRAPH)
sg.obj_dict['nodes'] = g.obj_dict['nodes']
return sg
def get_bitmap(self):
"Get the graph image in wx.Bitmap format."
if self.__bitmap is None: ### Generate a image and load it now.
self.refresh_bitmap()
return self.__bitmap
def refresh_bitmap(self):
self.write(TEMP_IMG_FILE, self.prog, 'png')
self.__bitmap = wx.EmptyBitmap(0,0)
self.__bitmap.LoadFile(TEMP_IMG_FILE, wx.BITMAP_TYPE_PNG)
return
def EG_get_all_node_names(self, root_graph=None):
'''Get all node names in the graph, include nodes in all subgraph.'''
if root_graph is None:
root_graph = self
nodes = root_graph.get_nodes()
result = [ remove_double_quote(n.get_name()) for n in nodes ]
sgs = root_graph.get_subgraphs()
for sg in sgs:
result += self.EG_get_all_node_names(sg)
### Remove wildcard node.
try:
result.remove('node'); result.remove('edge')
except:
pass
return list(set(result))
def EG_get_all_edge_names(self, root_graph=None):
'''Get all edge names in the graph, include edges in all subgraph.'''
if root_graph is None:
root_graph = self
edges = root_graph.get_edges()
result = [ ( remove_double_quote( e.get_source() ), \
remove_double_quote( e.get_destination() ) ) \
for e in edges ]
sgs = root_graph.get_subgraphs()
for sg in sgs:
result += self.EG_get_all_edge_names(sg)
return list(set(result))
def EG_append_node(self, nodename, root_graph=None):
"Add node to 'root_graph' only by name."
uname = to_unicode(nodename.strip())
if root_graph is None:
root_graph = self
# Check unique.
n = self.EG_get_node_by_name(uname, root_graph=root_graph)
if not(n is None):
raise Exception('Unique error. The node with name "%s" was existed in the graph.'%uname)
uname = add_double_quote(uname)
n = pydot.Node(uname)
root_graph.add_node(n)
self.__check_wildcard_existed()
self.refresh_bitmap()
return n
def EG_append_edge(self, name_pair, root_graph=None):
"Add edge to 'root_graph' only by node-names of the edge."
nameA = to_unicode(name_pair[0].strip())
nameB = to_unicode(name_pair[1].strip())
if root_graph is None:
root_graph = self
### Check unique.
e = self.EG_get_edge_by_names((nameA, nameB), root_graph=root_graph)
if not(e is None):
raise Exception('Unique error. The edge with same names was existed in the graph.')
nameA = add_double_quote(nameA)
nameB = add_double_quote(nameB)
e = pydot.Edge(src=nameA, dst=nameB)
root_graph.add_edge(e)
self.__check_wildcard_existed()
self.refresh_bitmap()
return e
def EG_append_subgraph(self, graphname, root_graph=None):
"Add node to 'root_graph' only by name."
uname = to_unicode(graphname.strip())
if root_graph is None:
root_graph = self
# Check unique.
n = self.EG_get_subgraph_by_name(uname)
if not(n is None):
raise Exception('Unique error. The subgraph with name "%s" was existed in the graph.'%uname)
uname = add_double_quote(uname)
sg = self.create_empty_subgraph(uname)
root_graph.add_subgraph(sg)
self.refresh_bitmap()
return sg
def EG_get_node_by_name(self, name, root_graph=None):
'''Get node by name. Return None if not found.'''
if root_graph is None:
root_graph = self
n_name = remove_double_quote(name)
nodes = root_graph.get_nodes()
r = None
for n in nodes:
_name = remove_double_quote( n.get_name() )
if _name == n_name:
r = n
break
return r
def EG_get_edge_by_names(self, name_pair, root_graph=None):
'''Get edge by names of source and destination. Return None if not found.'''
if root_graph is None:
root_graph = self
nameA = remove_double_quote(name_pair[0])
nameB = remove_double_quote(name_pair[1])
edges = root_graph.get_edges()
r = None
for e in edges:
n = remove_double_quote( e.get_source() )
n1 = remove_double_quote( e.get_destination() )
if ((n == nameA )
and (n1 == nameB)):
r = e
break
return r
def EG_get_subgraph_by_name(self, name, root_graph=None):
'''Get node by name. Return None if not found.'''
if root_graph is None:
root_graph = self
sg_name = remove_double_quote(name)
sgs = root_graph.get_subgraphs()
r = None
for sg in sgs:
_name = remove_double_quote(sg.get_name())
if _name == sg_name:
r = sg
break
return r
def EG_remove_node(self, name, root_graph=None):
"Remove node from root_graph by name."
if root_graph is None:
root_graph = self
uname = add_double_quote( to_unicode(name) )
try:
del root_graph.obj_dict['nodes'][uname]
except:
pass
self.refresh_bitmap()
return
def EG_remove_edge(self, name_pair, root_graph=None):
"Remove edge from root_graph by end points name of the edge."
if root_graph is None:
root_graph = self
nameA = add_double_quote( to_unicode( name_pair[0]) )
nameB = add_double_quote( to_unicode( name_pair[1]) )
try:
del root_graph.obj_dict['edges'][(nameA, nameB)]
except:
pass
self.refresh_bitmap()
return
def EG_remove_subgraph(self, name, root_graph=None):
"Remove subgraph from root_graph by name."
if root_graph is None:
root_graph = self
sg_name = add_double_quote( to_unicode(name) )
try:
del root_graph.obj_dict['subgraphs'][sg_name]
except:
pass
self.refresh_bitmap()
return
def EG_to_string(self, indent=0, root_graph=None):
"""Returns a string representation of the graph in dot language.
This version try to make string looking better than to_string().
"""
idt = ' '*(4 + indent)
graph = list()
if root_graph is None:
root_graph = self
if root_graph != root_graph.get_parent_graph():
graph.append(' '*indent)
if root_graph.obj_dict.get('strict', None) is not None:
if root_graph==root_graph.get_parent_graph() and root_graph.obj_dict['strict']:
graph.append('strict ')
if root_graph.obj_dict['name'] == '':
graph.append( '{\n' )
else:
graph.append( '%s %s {\n' % (root_graph.obj_dict['type'], root_graph.obj_dict['name']) )
for attr in root_graph.obj_dict['attributes'].keys():
if root_graph.obj_dict['attributes'].get(attr, None) is not None:
graph.append( idt+'%s=' % attr )
val = root_graph.obj_dict['attributes'].get(attr)
graph.append( pydot.quote_if_necessary(val) )
graph.append( ';\n' )
edges_done = set()
edge_obj_dicts = list()
for e in root_graph.obj_dict['edges'].values():
edge_obj_dicts.extend(e)
if edge_obj_dicts:
edge_src_set, edge_dst_set = zip( *[obj['points'] for obj in edge_obj_dicts] )
edge_src_set, edge_dst_set = set(edge_src_set), set(edge_dst_set)
else:
edge_src_set, edge_dst_set = set(), set()
node_obj_dicts = list()
for e in root_graph.obj_dict['nodes'].values():
node_obj_dicts.extend(e)
sgraph_obj_dicts = list()
for sg in root_graph.obj_dict['subgraphs'].values():
sgraph_obj_dicts.extend(sg)
obj_list = [ (obj['sequence'], obj) for obj in (edge_obj_dicts + node_obj_dicts + sgraph_obj_dicts) ]
obj_list.sort()
for _, obj in obj_list:
if obj['type'] == 'node':
node = pydot.Node(obj_dict=obj)
if root_graph.obj_dict.get('suppress_disconnected', False):
if (node.get_name() not in edge_src_set and
node.get_name() not in edge_dst_set):
continue
graph.append( DEUtils.smart_indent(node.to_string(), idt) + '\n' )
elif obj['type'] == 'edge':
edge = pydot.Edge(obj_dict=obj)
if root_graph.obj_dict.get('simplify', False) and edge in edges_done:
continue
graph.append( DEUtils.smart_indent(edge.to_string(), idt) + '\n' )
edges_done.add(edge)
else:
sgraph = pydot.Subgraph(obj_dict=obj)
sg_str = self.EG_to_string(indent+4, sgraph)
graph.append( sg_str+'\n' )
if root_graph != root_graph.get_parent_graph():
graph.append(' '*indent)
graph.append( '}\n' )
return ''.join(graph)
def undo_change(self, step=1):
"Roll back the change of the graph."
self.refresh_bitmap()
return
def redo_change(self, step=1):
"Redo change on the graph."
self.refresh_bitmap()
return
if __name__ == '__main__':
sd = ExtGraph()
s = u"中文"
s1 = s.encode('utf8')
sd.EG_append_node(s)
sd.EG_append_edge((s,s1))
print sd.to_string()