--- a/env/lib/python3.7/site-packages/prov/dot.py	Thu May 14 16:47:39 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,363 +0,0 @@
-"""Graphical visualisation support for prov.model.
-
-This module produces graphical visualisation for provenanve graphs.
-Requires pydot module and Graphviz.
-
-References:
-
-* pydot homepage: https://github.com/erocarrera/pydot
-* Graphviz:       http://www.graphviz.org/
-* DOT Language:   http://www.graphviz.org/doc/info/lang.html
-
-.. moduleauthor:: Trung Dong Huynh <trungdong@donggiang.com>
-"""
-from __future__ import (absolute_import, division, print_function,
-                        unicode_literals)
-
-try:
-    from html import escape
-except ImportError:
-    from cgi import escape
-from datetime import datetime
-import pydot
-import six
-
-from prov.model import (
-    PROV_ACTIVITY, PROV_AGENT, PROV_ALTERNATE, PROV_ASSOCIATION,
-    PROV_ATTRIBUTION, PROV_BUNDLE, PROV_COMMUNICATION, PROV_DERIVATION,
-    PROV_DELEGATION, PROV_ENTITY, PROV_GENERATION, PROV_INFLUENCE,
-    PROV_INVALIDATION, PROV_END, PROV_MEMBERSHIP, PROV_MENTION,
-    PROV_SPECIALIZATION, PROV_START, PROV_USAGE, Identifier,
-    PROV_ATTRIBUTE_QNAMES, sorted_attributes, ProvException
-)
-
-__author__ = 'Trung Dong Huynh'
-__email__ = 'trungdong@donggiang.com'
-
-
-# Visual styles for various elements (nodes) and relations (edges)
-# see http://graphviz.org/content/attrs
-DOT_PROV_STYLE = {
-    # Generic node
-    0: {
-        'shape': 'oval', 'style': 'filled',
-        'fillcolor': 'lightgray', 'color': 'dimgray'
-    },
-    # Elements
-    PROV_ENTITY: {
-        'shape': 'oval', 'style': 'filled',
-        'fillcolor': '#FFFC87', 'color': '#808080'
-    },
-    PROV_ACTIVITY: {
-        'shape': 'box', 'style': 'filled',
-        'fillcolor': '#9FB1FC', 'color': '#0000FF'
-    },
-    PROV_AGENT: {
-        'shape': 'house', 'style': 'filled',
-        'fillcolor': '#FED37F'
-    },
-    PROV_BUNDLE: {
-        'shape': 'folder', 'style': 'filled',
-        'fillcolor': 'aliceblue'
-    },
-    # Relations
-    PROV_GENERATION: {
-        'label': 'wasGeneratedBy', 'fontsize': '10.0',
-        'color': 'darkgreen', 'fontcolor': 'darkgreen'
-    },
-    PROV_USAGE: {
-        'label': 'used', 'fontsize': '10.0',
-        'color': 'red4', 'fontcolor': 'red'
-    },
-    PROV_COMMUNICATION: {
-        'label': 'wasInformedBy', 'fontsize': '10.0'
-    },
-    PROV_START: {
-        'label': 'wasStartedBy', 'fontsize': '10.0'
-    },
-    PROV_END: {
-        'label': 'wasEndedBy', 'fontsize': '10.0'
-    },
-    PROV_INVALIDATION: {
-        'label': 'wasInvalidatedBy', 'fontsize': '10.0'
-    },
-    PROV_DERIVATION: {
-        'label': 'wasDerivedFrom', 'fontsize': '10.0'
-    },
-    PROV_ATTRIBUTION: {
-        'label': 'wasAttributedTo', 'fontsize': '10.0',
-        'color': '#FED37F'
-    },
-    PROV_ASSOCIATION: {
-        'label': 'wasAssociatedWith', 'fontsize': '10.0',
-        'color': '#FED37F'
-    },
-    PROV_DELEGATION: {
-        'label': 'actedOnBehalfOf', 'fontsize': '10.0',
-        'color': '#FED37F'
-    },
-    PROV_INFLUENCE: {
-        'label': 'wasInfluencedBy', 'fontsize': '10.0',
-        'color': 'grey'
-    },
-    PROV_ALTERNATE: {
-        'label': 'alternateOf', 'fontsize': '10.0'
-    },
-    PROV_SPECIALIZATION: {
-        'label': 'specializationOf', 'fontsize': '10.0'
-    },
-    PROV_MENTION: {
-        'label': 'mentionOf', 'fontsize': '10.0'
-    },
-    PROV_MEMBERSHIP: {
-        'label': 'hadMember', 'fontsize': '10.0'
-    },
-    }
-
-ANNOTATION_STYLE = {
-    'shape': 'note', 'color': 'gray',
-    'fontcolor': 'black', 'fontsize': '10'
-}
-ANNOTATION_LINK_STYLE = {
-    'arrowhead': 'none', 'style': 'dashed',
-    'color': 'gray'
-}
-ANNOTATION_START_ROW = '<<TABLE cellpadding=\"0\" border=\"0\">'
-ANNOTATION_ROW_TEMPLATE = """    <TR>
-        <TD align=\"left\" href=\"%s\">%s</TD>
-        <TD align=\"left\"%s>%s</TD>
-    </TR>"""
-ANNOTATION_END_ROW = '    </TABLE>>'
-
-
-def htlm_link_if_uri(value):
-    try:
-        uri = value.uri
-        return '<a href="%s">%s</a>' % (uri, six.text_type(value))
-    except AttributeError:
-        return six.text_type(value)
-
-
-def prov_to_dot(bundle, show_nary=True, use_labels=False,
-                direction='BT',
-                show_element_attributes=True, show_relation_attributes=True):
-    """
-    Convert a provenance bundle/document into a DOT graphical representation.
-
-    :param bundle: The provenance bundle/document to be converted.
-    :type bundle: :class:`ProvBundle`
-    :param show_nary: shows all elements in n-ary relations.
-    :type show_nary: bool
-    :param use_labels: uses the prov:label property of an element as its name (instead of its identifier).
-    :type use_labels: bool
-    :param direction: specifies the direction of the graph. Valid values are "BT" (default), "TB", "LR", "RL".
-    :param show_element_attributes: shows attributes of elements.
-    :type show_element_attributes: bool
-    :param show_relation_attributes: shows attributes of relations.
-    :type show_relation_attributes: bool
-    :returns:  :class:`pydot.Dot` -- the Dot object.
-    """
-    if direction not in {'BT', 'TB', 'LR', 'RL'}:
-        # Invalid direction is provided
-        direction = 'BT'  # reset it to the default value
-    maindot = pydot.Dot(graph_type='digraph', rankdir=direction, charset='utf-8')
-
-    node_map = {}
-    count = [0, 0, 0, 0]  # counters for node ids
-
-    def _bundle_to_dot(dot, bundle):
-        def _attach_attribute_annotation(node, record):
-            # Adding a node to show all attributes
-            attributes = list(
-                (attr_name, value) for attr_name, value in record.attributes
-                if attr_name not in PROV_ATTRIBUTE_QNAMES
-            )
-
-            if not attributes:
-                return  # No attribute to display
-
-            # Sort the attributes.
-            attributes = sorted_attributes(record.get_type(), attributes)
-
-            ann_rows = [ANNOTATION_START_ROW]
-            ann_rows.extend(
-                ANNOTATION_ROW_TEMPLATE % (
-                    attr.uri, escape(six.text_type(attr)),
-                    ' href=\"%s\"' % value.uri if isinstance(value, Identifier)
-                    else '',
-                    escape(six.text_type(value)
-                           if not isinstance(value, datetime) else
-                           six.text_type(value.isoformat())))
-                for attr, value in attributes
-            )
-            ann_rows.append(ANNOTATION_END_ROW)
-            count[3] += 1
-            annotations = pydot.Node(
-                'ann%d' % count[3], label='\n'.join(ann_rows),
-                **ANNOTATION_STYLE
-            )
-            dot.add_node(annotations)
-            dot.add_edge(pydot.Edge(annotations, node, **ANNOTATION_LINK_STYLE))
-
-        def _add_bundle(bundle):
-            count[2] += 1
-            subdot = pydot.Cluster(
-                graph_name='c%d' % count[2], URL='"%s"' % bundle.identifier.uri
-            )
-            if use_labels:
-                if bundle.label == bundle.identifier:
-                    bundle_label = '"%s"' % six.text_type(bundle.label)
-                else:
-                    # Fancier label if both are different. The label will be
-                    # the main node text, whereas the identifier will be a
-                    # kind of subtitle.
-                    bundle_label = ('<%s<br />'
-                                    '<font color="#333333" point-size="10">'
-                                    '%s</font>>')
-                    bundle_label = bundle_label % (
-                        six.text_type(bundle.label),
-                        six.text_type(bundle.identifier)
-                    )
-                subdot.set_label('"%s"' % six.text_type(bundle_label))
-            else:
-                subdot.set_label('"%s"' % six.text_type(bundle.identifier))
-            _bundle_to_dot(subdot, bundle)
-            dot.add_subgraph(subdot)
-            return subdot
-
-        def _add_node(record):
-            count[0] += 1
-            node_id = 'n%d' % count[0]
-            if use_labels:
-                if record.label == record.identifier:
-                    node_label = '"%s"' % six.text_type(record.label)
-                else:
-                    # Fancier label if both are different. The label will be
-                    # the main node text, whereas the identifier will be a
-                    # kind of subtitle.
-                    node_label = ('<%s<br />'
-                                  '<font color="#333333" point-size="10">'
-                                  '%s</font>>')
-                    node_label = node_label % (six.text_type(record.label),
-                                               six.text_type(record.identifier))
-            else:
-                node_label = '"%s"' % six.text_type(record.identifier)
-
-            uri = record.identifier.uri
-            style = DOT_PROV_STYLE[record.get_type()]
-            node = pydot.Node(
-                node_id, label=node_label, URL='"%s"' % uri, **style
-            )
-            node_map[uri] = node
-            dot.add_node(node)
-
-            if show_element_attributes:
-                _attach_attribute_annotation(node, rec)
-            return node
-
-        def _add_generic_node(qname):
-            count[0] += 1
-            node_id = 'n%d' % count[0]
-            node_label = '"%s"' % six.text_type(qname)
-
-            uri = qname.uri
-            style = DOT_PROV_STYLE[0]
-            node = pydot.Node(
-                node_id, label=node_label, URL='"%s"' % uri, **style
-            )
-            node_map[uri] = node
-            dot.add_node(node)
-            return node
-
-        def _get_bnode():
-            count[1] += 1
-            bnode_id = 'b%d' % count[1]
-            bnode = pydot.Node(
-                bnode_id, label='""', shape='point', color='gray'
-            )
-            dot.add_node(bnode)
-            return bnode
-
-        def _get_node(qname):
-            if qname is None:
-                return _get_bnode()
-            uri = qname.uri
-            if uri not in node_map:
-                _add_generic_node(qname)
-            return node_map[uri]
-
-        records = bundle.get_records()
-        relations = []
-        for rec in records:
-            if rec.is_element():
-                _add_node(rec)
-            else:
-                # Saving the relations for later processing
-                relations.append(rec)
-
-        if not bundle.is_bundle():
-            for bundle in bundle.bundles:
-                _add_bundle(bundle)
-
-        for rec in relations:
-            args = rec.args
-            # skipping empty records
-            if not args:
-                continue
-            # picking element nodes
-            nodes = [
-                value for attr_name, value in rec.formal_attributes
-                if attr_name in PROV_ATTRIBUTE_QNAMES
-            ]
-            other_attributes = [
-                (attr_name, value) for attr_name, value in rec.attributes
-                if attr_name not in PROV_ATTRIBUTE_QNAMES
-            ]
-            add_attribute_annotation = (
-                show_relation_attributes and other_attributes
-            )
-            add_nary_elements = len(nodes) > 2 and show_nary
-            style = DOT_PROV_STYLE[rec.get_type()]
-            if len(nodes) < 2:  # too few elements for a relation?
-                continue  # cannot draw this
-
-            if add_nary_elements or add_attribute_annotation:
-                # a blank node for n-ary relations or the attribute annotation
-                bnode = _get_bnode()
-
-                # the first segment
-                dot.add_edge(
-                    pydot.Edge(
-                        _get_node(nodes[0]), bnode, arrowhead='none', **style
-                    )
-                )
-                style = dict(style)  # copy the style
-                del style['label']  # not showing label in the second segment
-                # the second segment
-                dot.add_edge(pydot.Edge(bnode, _get_node(nodes[1]), **style))
-                if add_nary_elements:
-                    style['color'] = 'gray'  # all remaining segment to be gray
-                    for node in nodes[2:]:
-                        if node is not None:
-                            dot.add_edge(
-                                pydot.Edge(bnode, _get_node(node), **style)
-                            )
-                if add_attribute_annotation:
-                    _attach_attribute_annotation(bnode, rec)
-            else:
-                # show a simple binary relations with no annotation
-                dot.add_edge(
-                    pydot.Edge(
-                        _get_node(nodes[0]), _get_node(nodes[1]), **style
-                    )
-                )
-
-    try:
-        unified = bundle.unified()
-    except ProvException:
-        # Could not unify this bundle
-        # try the original document anyway
-        unified = bundle
-
-    _bundle_to_dot(maindot, unified)
-    return maindot