Adding new stuff
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Viktor Barzin
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722 changed files with 331 additions and 189 deletions
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# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
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#
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# This file is part of logilab-common.
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#
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# logilab-common is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation, either version 2.1 of the License, or (at your option) any
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# later version.
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#
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# logilab-common is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with logilab-common. If not, see <http://www.gnu.org/licenses/>.
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"""Functions to generate files readable with Georg Sander's vcg
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(Visualization of Compiler Graphs).
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You can download vcg at http://rw4.cs.uni-sb.de/~sander/html/gshome.html
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Note that vcg exists as a debian package.
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See vcg's documentation for explanation about the different values that
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maybe used for the functions parameters.
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"""
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__docformat__ = "restructuredtext en"
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import string
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ATTRS_VAL = {
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'algos': ('dfs', 'tree', 'minbackward',
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'left_to_right', 'right_to_left',
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'top_to_bottom', 'bottom_to_top',
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'maxdepth', 'maxdepthslow', 'mindepth', 'mindepthslow',
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'mindegree', 'minindegree', 'minoutdegree',
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'maxdegree', 'maxindegree', 'maxoutdegree'),
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'booleans': ('yes', 'no'),
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'colors': ('black', 'white', 'blue', 'red', 'green', 'yellow',
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'magenta', 'lightgrey',
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'cyan', 'darkgrey', 'darkblue', 'darkred', 'darkgreen',
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'darkyellow', 'darkmagenta', 'darkcyan', 'gold',
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'lightblue', 'lightred', 'lightgreen', 'lightyellow',
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'lightmagenta', 'lightcyan', 'lilac', 'turquoise',
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'aquamarine', 'khaki', 'purple', 'yellowgreen', 'pink',
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'orange', 'orchid'),
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'shapes': ('box', 'ellipse', 'rhomb', 'triangle'),
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'textmodes': ('center', 'left_justify', 'right_justify'),
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'arrowstyles': ('solid', 'line', 'none'),
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'linestyles': ('continuous', 'dashed', 'dotted', 'invisible'),
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}
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# meaning of possible values:
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# O -> string
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# 1 -> int
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# list -> value in list
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GRAPH_ATTRS = {
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'title': 0,
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'label': 0,
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'color': ATTRS_VAL['colors'],
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'textcolor': ATTRS_VAL['colors'],
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'bordercolor': ATTRS_VAL['colors'],
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'width': 1,
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'height': 1,
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'borderwidth': 1,
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'textmode': ATTRS_VAL['textmodes'],
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'shape': ATTRS_VAL['shapes'],
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'shrink': 1,
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'stretch': 1,
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'orientation': ATTRS_VAL['algos'],
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'vertical_order': 1,
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'horizontal_order': 1,
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'xspace': 1,
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'yspace': 1,
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'layoutalgorithm': ATTRS_VAL['algos'],
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'late_edge_labels': ATTRS_VAL['booleans'],
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'display_edge_labels': ATTRS_VAL['booleans'],
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'dirty_edge_labels': ATTRS_VAL['booleans'],
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'finetuning': ATTRS_VAL['booleans'],
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'manhattan_edges': ATTRS_VAL['booleans'],
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'smanhattan_edges': ATTRS_VAL['booleans'],
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'port_sharing': ATTRS_VAL['booleans'],
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'edges': ATTRS_VAL['booleans'],
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'nodes': ATTRS_VAL['booleans'],
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'splines': ATTRS_VAL['booleans'],
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}
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NODE_ATTRS = {
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'title': 0,
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'label': 0,
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'color': ATTRS_VAL['colors'],
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'textcolor': ATTRS_VAL['colors'],
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'bordercolor': ATTRS_VAL['colors'],
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'width': 1,
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'height': 1,
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'borderwidth': 1,
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'textmode': ATTRS_VAL['textmodes'],
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'shape': ATTRS_VAL['shapes'],
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'shrink': 1,
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'stretch': 1,
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'vertical_order': 1,
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'horizontal_order': 1,
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}
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EDGE_ATTRS = {
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'sourcename': 0,
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'targetname': 0,
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'label': 0,
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'linestyle': ATTRS_VAL['linestyles'],
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'class': 1,
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'thickness': 0,
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'color': ATTRS_VAL['colors'],
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'textcolor': ATTRS_VAL['colors'],
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'arrowcolor': ATTRS_VAL['colors'],
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'backarrowcolor': ATTRS_VAL['colors'],
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'arrowsize': 1,
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'backarrowsize': 1,
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'arrowstyle': ATTRS_VAL['arrowstyles'],
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'backarrowstyle': ATTRS_VAL['arrowstyles'],
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'textmode': ATTRS_VAL['textmodes'],
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'priority': 1,
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'anchor': 1,
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'horizontal_order': 1,
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}
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# Misc utilities ###############################################################
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def latin_to_vcg(st):
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"""Convert latin characters using vcg escape sequence.
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"""
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for char in st:
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if char not in string.ascii_letters:
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try:
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num = ord(char)
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if num >= 192:
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st = st.replace(char, r'\fi%d'%ord(char))
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except:
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pass
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return st
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class VCGPrinter:
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"""A vcg graph writer.
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"""
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def __init__(self, output_stream):
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self._stream = output_stream
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self._indent = ''
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def open_graph(self, **args):
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"""open a vcg graph
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"""
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self._stream.write('%sgraph:{\n'%self._indent)
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self._inc_indent()
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self._write_attributes(GRAPH_ATTRS, **args)
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def close_graph(self):
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"""close a vcg graph
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"""
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self._dec_indent()
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self._stream.write('%s}\n'%self._indent)
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def node(self, title, **args):
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"""draw a node
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"""
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self._stream.write('%snode: {title:"%s"' % (self._indent, title))
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self._write_attributes(NODE_ATTRS, **args)
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self._stream.write('}\n')
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def edge(self, from_node, to_node, edge_type='', **args):
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"""draw an edge from a node to another.
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"""
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self._stream.write(
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'%s%sedge: {sourcename:"%s" targetname:"%s"' % (
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self._indent, edge_type, from_node, to_node))
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self._write_attributes(EDGE_ATTRS, **args)
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self._stream.write('}\n')
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# private ##################################################################
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def _write_attributes(self, attributes_dict, **args):
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"""write graph, node or edge attributes
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"""
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for key, value in args.items():
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try:
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_type = attributes_dict[key]
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except KeyError:
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raise Exception('''no such attribute %s
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possible attributes are %s''' % (key, attributes_dict.keys()))
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if not _type:
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self._stream.write('%s%s:"%s"\n' % (self._indent, key, value))
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elif _type == 1:
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self._stream.write('%s%s:%s\n' % (self._indent, key,
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int(value)))
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elif value in _type:
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self._stream.write('%s%s:%s\n' % (self._indent, key, value))
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else:
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raise Exception('''value %s isn\'t correct for attribute %s
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correct values are %s''' % (value, key, _type))
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def _inc_indent(self):
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"""increment indentation
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"""
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self._indent = ' %s' % self._indent
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def _dec_indent(self):
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"""decrement indentation
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"""
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self._indent = self._indent[:-2]
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