def draw(graph, graphviz_exec=None, img_format=None, img_file=__img_file):
"""
draw graph using graphviz
"""
log.debug("call to daeso.graphviz.draw")
# output graph just once, as cmap is never updated without an image update first
if img_format != "cmap":
log.debug("graph=\n" + graph)
# FIXME: on Mac OS X, when the applications is build with py2app , the
# subprocess shell does NOT read ~/.bashrc or ~/.profile, and therefore
# the PATH variable contains only the system wide definition from
# /etc/profile, that is PATH="/bin:/sbin:/usr/bin:/usr/sbin".
# Hence a dot in /opt/local/bin or /usr/local/bin will NOT be found.
# Perhaps add some smart searching here?
if not graphviz_exec:
graphviz_exec = __graphviz_exec
# tricky: the defaults for function parameters are initialized only once,
# and are therefore not updated when __grapviz_exec or __img_format change!
command = "%s -T %s" % (graphviz_exec, (img_format or __img_format))
if img_file:
command += " -o " + img_file
log.debug(command)
# Due to a bug in subprocess, we have to assign an explicit handle to all streams
# See http://www.py2exe.org/index.cgi/Py2ExeSubprocessInteractions
proc = Popen(command, shell=True, stdin=PIPE, stdout=PIPE, stderr=PIPE)
# Drawing can be slow, so it is crucial to use communicate,
# which waits for the process to complete.
# Graph must be utf8 encoded on OS X, otherwise weird errors.
stdout, stderr = proc.communicate(graph.encode("utf-8"))
log.debug("stdout=\n" + stdout)
log.debug("stderr=\n" + stderr)
if stderr:
if "command not found" in stderr:
stderr += (
"\nThe graphviz program '%s' " % graphviz_exec
+ "is not in your path: %s \n" % environ.get("PATH")
+ "Add the directory containing this program "
"to your PATH environment variable, "
"or use the '--graphviz' command line option "
"to supply the path to this program."
)
raise GraphvizError(stderr)
# stdout will be empty when output goes to a file
return stdout
def draw(graph, graphviz_exec=None, img_format=None, img_file=__img_file):
"""
draw graph using graphviz
"""
log.debug("call to daeso.graphviz.draw")
# output graph just once, as cmap is never updated without an image update first
if img_format != "cmap":
log.debug("graph=\n" + graph)
# FIXME: on Mac OS X, when the applications is build with py2app , the
# subprocess shell does NOT read ~/.bashrc or ~/.profile, and therefore
# the PATH variable contains only the system wide definition from
# /etc/profile, that is PATH="/bin:/sbin:/usr/bin:/usr/sbin".
# Hence a dot in /opt/local/bin or /usr/local/bin will NOT be found.
# Perhaps add some smart searching here?
if not graphviz_exec:
graphviz_exec = __graphviz_exec
# tricky: the defaults for function parameters are initialized only once,
# and are therefore not updated when __grapviz_exec or __img_format change!
command = "%s -T %s" % (graphviz_exec, (img_format or __img_format))
if img_file: command += " -o " + img_file
log.debug(command)
# Due to a bug in subprocess, we have to assign an explicit handle to all streams
# See http://www.py2exe.org/index.cgi/Py2ExeSubprocessInteractions
proc = Popen(command, shell=True, stdin=PIPE, stdout=PIPE, stderr=PIPE)
# Drawing can be slow, so it is crucial to use communicate,
# which waits for the process to complete.
# Graph must be utf8 encoded on OS X, otherwise weird errors.
stdout, stderr = proc.communicate(graph.encode("utf-8"))
log.debug("stdout=\n" + stdout)
log.debug("stderr=\n" + stderr)
if stderr:
if "command not found" in stderr:
stderr += ("\nThe graphviz program '%s' " % graphviz_exec +
"is not in your path: %s \n" % environ.get("PATH") +
"Add the directory containing this program "
"to your PATH environment variable, "
"or use the '--graphviz' command line option "
"to supply the path to this program.")
raise GraphvizError(stderr)
# stdout will be empty when output goes to a file
return stdout
def get_html():
log.debug("call to daeso.graphviz.get_html")
return ('<map name="graph">\n%s\n</map>\n' % __img_map +
'<img src="%s" border="0" usemap="#graph">' % __img_file)
def update_image_map(graph):
log.debug("call to daeso.graphviz.update_image_map")
global __img_map
send(update_image_map, "statusDescription", "Loading image map...")
__img_map = draw(graph, img_format="cmap", img_file=None)
send(update_image_map, "statusDescription")
def update_image_file(graph):
log.debug("call to daeso.graphviz.update_image_file")
send(update_image_file, "statusDescription", "Loading image...")
draw(graph)
send(update_image_file, "statusDescription")
def get_html():
log.debug("call to daeso.graphviz.get_html")
return '<map name="graph">\n%s\n</map>\n' % __img_map + '<img src="%s" border="0" usemap="#graph">' % __img_file
def update_image_map(graph):
log.debug("call to daeso.graphviz.update_image_map")
global __img_map
send(update_image_map, "statusDescription", "Loading image map...")
__img_map = draw(graph, img_format="cmap", img_file=None)
send(update_image_map, "statusDescription")
def update_image_file(graph):
log.debug("call to daeso.graphviz.update_image_file")
send(update_image_file, "statusDescription", "Loading image...")
draw(graph)
send(update_image_file, "statusDescription")
