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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
REQ_DIR = '/home/abentley/pastegraph'
class Node(object):
def __init__(self, name, color=None):
self.name = name
self.color = color
def define(self):
if self.color is not None:
return '%s[fillcolor="%s" style="filled"]' % \
(self.name, self.color)
def __str__(self):
return self.name
def dot_output(my_file, 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):
cmdline = ['dot', '-Tgif']
if out_file is not None:
cmdline.extend(('-o', out_file))
dot_proc = Popen(cmdline, stdin=PIPE)
for line in input:
dot_proc.stdin.write(line)
dot_proc.stdin.close()
return dot_proc.wait()
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