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#!/usr/bin/env python2.4
from subprocess import Popen, PIPE
from urllib import urlencode
from xml.sax.saxutils import escape
import os.path
class Node(object):
def __init__(self, name, color=None, label=None, rev_id=None):
self.name = name
self.color = color
self.label = label
self.committer = None
self.rev_id = rev_id
self.node_style = []
def get_label(self):
label = None
if self.committer is not None:
label="%s\\n%s" % (self.name, self.committer)
elif self.rev_id is not None:
try:
first_segment = '-'.join(self.rev_id.split('-')[:-2])
except ValueError:
first_segment = []
if '@' in first_segment:
label="%s\\n%s" % (self.name, first_segment)
return label
def define(self):
attributes = []
style = []
if self.color is not None:
attributes.append('fillcolor="%s"' % self.color)
style.append('filled')
style.extend(self.node_style)
if len(style) > 0:
attributes.append('style="%s"' % ",".join(style))
label = self.get_label()
if label is not None:
attributes.append('label="%s"' % label)
if len(attributes) > 0:
return '%s[%s]' % (self.name, " ".join(attributes))
def __str__(self):
return self.name
def dot_output(relations):
defined = set()
yield "digraph G\n"
yield "{\n"
for (start, end) in relations:
if start.name not in defined:
defined.add(start.name)
my_def = start.define()
if my_def is not None:
yield " %s;\n" % my_def
if end.name not in defined:
defined.add(end.name)
my_def = end.define()
if my_def is not None:
yield " %s;\n" % my_def
yield " %s->%s;\n" % (start.name, end.name)
yield "}\n"
def invoke_dot(input, out_file=None, file_type='svg'):
cmdline = ['dot', '-T%s' % file_type]
if out_file is not None:
cmdline.extend(('-o', out_file))
try:
dot_proc = Popen(cmdline, stdin=PIPE)
except OSError, e:
if e.errno == 2:
print "You need 'dot' to create ancestry graphs"
return
for line in input:
dot_proc.stdin.write(line)
dot_proc.stdin.close()
return dot_proc.wait()
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