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# Copyright (C) 2004, 2005 Aaron Bentley
# <aaron@aaronbentley.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
from subprocess import Popen, PIPE
import os.path
import errno
import tempfile
import shutil
RSVG_OUTPUT_TYPES = ('png', 'jpg')
DOT_OUTPUT_TYPES = ('svg', 'svgz', 'gif', 'jpg', 'ps', 'fig', 'mif', 'png',
'cmapx')
class NoDot(Exception):
def __init__(self):
Exception.__init__(self, "Can't find dot!")
class NoRsvg(Exception):
def __init__(self):
Exception.__init__(self, "Can't find rsvg!")
class Node(object):
def __init__(self, name, color=None, label=None, rev_id=None,
cluster=None, node_style=None, date=None, message=None):
self.name = name
self.color = color
self.label = label
self.committer = None
self.rev_id = rev_id
if node_style is None:
self.node_style = []
self.cluster = cluster
self.rank = None
self.date = date
self.message = message
self.href = None
@staticmethod
def get_attribute(name, value):
if value is None:
return ''
value = value.replace("\\", "\\\\")
value = value.replace('"', '\\"')
value = value.replace('\n', '\\n')
return '%s="%s"' % (name, value)
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.label
if label is not None:
attributes.append('label="%s"' % label)
attributes.append('shape="box"')
tooltip = None
if self.message is not None:
tooltip = self.message
attributes.append(self.get_attribute('tooltip', tooltip))
if self.href is not None:
attributes.append('href="%s"' % self.href)
elif tooltip:
attributes.append('href="#"')
if len(attributes) > 0:
return '%s[%s]' % (self.name, " ".join(attributes))
def __str__(self):
return self.name
class Edge(object):
def __init__(self, start, end, label=None):
object.__init__(self)
self.start = start
self.end = end
self.label = label
def dot(self, do_weight=False):
attributes = []
if self.label is not None:
attributes.append(('label', self.label))
if do_weight:
weight = '0'
if self.start.cluster == self.end.cluster:
weight = '1'
elif self.start.rank is None:
weight = '1'
elif self.end.rank is None:
weight = '1'
attributes.append(('weight', weight))
if len(attributes) > 0:
atlist = []
for key, value in attributes:
atlist.append("%s=\"%s\"" % (key, value))
pq = ' '.join(atlist)
op = "[%s]" % pq
else:
op = ""
return "%s->%s%s;" % (self.start.name, self.end.name, op)
def make_edge(relation):
if hasattr(relation, 'start') and hasattr(relation, 'end'):
return relation
return Edge(relation[0], relation[1])
def dot_output(relations, ranking="forced"):
defined = {}
yield "digraph G\n"
yield "{\n"
clusters = set()
edges = [make_edge(f) for f in relations]
def rel_appropriate(start, end, cluster):
if cluster is None:
return (start.cluster is None and end.cluster is None) or \
start.cluster != end.cluster
else:
return start.cluster==cluster and end.cluster==cluster
for edge in edges:
if edge.start.cluster is not None:
clusters.add(edge.start.cluster)
if edge.end.cluster is not None:
clusters.add(edge.end.cluster)
clusters = list(clusters)
clusters.append(None)
for index, cluster in enumerate(clusters):
if cluster is not None and ranking == "cluster":
yield "subgraph cluster_%s\n" % index
yield "{\n"
yield ' label="%s"\n' % cluster
for edge in edges:
if edge.start.name not in defined and edge.start.cluster == cluster:
defined[edge.start.name] = edge.start
my_def = edge.start.define()
if my_def is not None:
yield " %s\n" % my_def
if edge.end.name not in defined and edge.end.cluster == cluster:
defined[edge.end.name] = edge.end
my_def = edge.end.define()
if my_def is not None:
yield " %s;\n" % my_def
if rel_appropriate(edge.start, edge.end, cluster):
yield " %s\n" % edge.dot(do_weight=ranking=="forced")
if cluster is not None and ranking == "cluster":
yield "}\n"
if ranking == "forced":
ranks = {}
for node in defined.itervalues():
if node.rank not in ranks:
ranks[node.rank] = set()
ranks[node.rank].add(node.name)
sorted_ranks = [n for n in ranks.iteritems()]
sorted_ranks.sort()
last_rank = None
for rank, nodes in sorted_ranks:
if rank is None:
continue
yield 'rank%d[style="invis"];\n' % rank
if last_rank is not None:
yield 'rank%d -> rank%d[style="invis"];\n' % (last_rank, rank)
last_rank = rank
for rank, nodes in ranks.iteritems():
if rank is None:
continue
node_text = "; ".join('"%s"' % n for n in nodes)
yield ' {rank = same; "rank%d"; %s}\n' % (rank, node_text)
yield "}\n"
def invoke_dot_aa(input, out_file, file_type='png'):
"""\
Produce antialiased Dot output, invoking rsvg on an intermediate file.
rsvg only supports png, jpeg and .ico files."""
tempdir = tempfile.mkdtemp()
try:
temp_file = os.path.join(tempdir, 'temp.svg')
invoke_dot(input, temp_file, 'svg')
cmdline = ['rsvg', temp_file, out_file]
try:
rsvg_proc = Popen(cmdline)
except OSError, e:
if e.errno == errno.ENOENT:
raise NoRsvg()
status = rsvg_proc.wait()
finally:
shutil.rmtree(tempdir)
return status
def invoke_dot(input, out_file=None, file_type='svg', antialias=None,
fontname="Helvetica", fontsize=11):
cmdline = ['dot', '-T%s' % file_type, '-Nfontname=%s' % fontname,
'-Efontname=%s' % fontname, '-Nfontsize=%d' % fontsize,
'-Efontsize=%d' % fontsize]
if out_file is not None:
cmdline.extend(('-o', out_file))
try:
dot_proc = Popen(cmdline, stdin=PIPE)
except OSError, e:
if e.errno == errno.ENOENT:
raise NoDot()
else:
raise
for line in input:
dot_proc.stdin.write(line.encode('utf-8'))
dot_proc.stdin.close()
return dot_proc.wait()
def invoke_dot_html(input, out_file):
"""\
Produce an html file, which uses a .png file, and a cmap to provide
annotated revisions.
"""
tempdir = tempfile.mkdtemp()
try:
temp_dot = os.path.join(tempdir, 'temp.dot')
status = invoke_dot(input, temp_dot, file_type='dot')
dot = open(temp_dot)
temp_file = os.path.join(tempdir, 'temp.cmapx')
status = invoke_dot(dot, temp_file, 'cmapx')
png_file = '.'.join(out_file.split('.')[:-1] + ['png'])
dot.seek(0)
status = invoke_dot(dot, png_file, 'png')
png_relative = png_file.split('/')[-1]
html = open(out_file, 'wb')
w = html.write
w('<html><head><title></title></head>\n')
w('<body>\n')
w('<img src="%s" usemap="#G" border=0/>' % png_relative)
w(open(temp_file).read())
w('</body></html>\n')
finally:
shutil.rmtree(tempdir)
return status
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