2 # Released into the public domain.
3 # Written by Mike Frysinger <vapier>.
5 """Module for diving into python objects."""
7 from __future__ import print_function
13 from cStringIO import StringIO
15 from io import StringIO
25 # Objects that hold multiple objects (can be looped over).
32 # Objects that we shouldn't really probe.
38 # Simple objects we don't decode further.
53 # Objects that are dictionary based.
59 # Standard python objects we don't normally expand.
68 _C = lambda x: '\033[%im' % x
70 return '%s%s%s' % (c, m, self.NORMAL)
84 def __init__(self, obj, depth=None, out=None, linelim=150,
85 show_internal=False, show_all=False, show_std=False):
88 #out = self.sys.stdout
91 self.depth = depth if depth else self.MAX_DEPTH
92 self.line_limit = linelim
93 self.show_internal = show_internal
94 self.show_all = show_all
95 self.show_std = show_std
100 if hasattr(out, 'getvalue'):
101 self.pydoc.pager(out.getvalue())
106 """Truncate |s| length to self.line_limit bytes"""
107 if len(s) > self.line_limit:
108 s = '%s %s' % (s[0:self.line_limit],
109 self.C('<truncated>', self.RED))
112 def dump(self, obj, depth=0, name=None):
113 """Dump |obj| with |name|"""
115 def w(msg, indent=indent, color=None):
116 for line in msg.splitlines():
118 line = self.C(line, color)
119 self.out.write('%s%s\n' % (indent, line))
120 def d(obj, **kwargs):
122 self.dump(obj, depth=depth + 1, **kwargs)
123 except Exception as e:
124 w(' <error probing>: %s' % (e,), color=self.RED)
127 if ((not self.show_std and isinstance(obj, self.TYPES_STANDARD)) or
128 isinstance(obj, self.TYPES_SCALAR)):
129 w('%s: %s' % (self.C(name, self.BOLD), obj), indent=indent[:-2])
134 w('%s: %s' % (self.C(name, self.BOLD),
135 self.C('<loop>', self.RED)), indent=indent[:-2])
142 w('%s' % (name,), color=self.BOLD, indent=indent[:-2])
147 w('%s: %s' % (type(obj), self.trunc(objs),))
149 w('Object.type: %s' % (type(obj),))
150 w(' .repr: %s' % (self.trunc(objr),))
151 w(' .str : %s' % (self.trunc(objs),))
153 if depth > self.depth:
154 w('<stop; depth limit hit at %i>' % (depth,), color=self.RED)
157 if isinstance(obj, self.TYPES_ITERABLES):
159 for i, o in enumerate(obj):
160 d(o, name='[%i]' % (i,))
161 elif isinstance(obj, self.TYPES_SCALAR):
162 # Scalar types; already shown above.
164 elif isinstance(obj, self.TYPES_DICT):
166 for k, v in obj.items():
167 d(v, name='{%r}' % (k,))
168 elif isinstance(obj, self.TYPES_STANDARD):
169 # Standard types; already shown above.
171 elif isinstance(obj, self.TYPES_CALLABLE):
172 # Callable functions.
173 doc = getattr(obj, 'func_doc', None)
175 w('"""%s"""' % (doc.strip(),), indent=indent + ' ',
178 # Unknown type; probe it!
179 doc = getattr(obj, '__doc__', None)
181 w('"""%s"""' % (doc.strip(),), indent=indent + ' ',
184 for k, v in getattr(obj, '__dict__', {}).items():
185 d(v, name='{%r}' % (k,))
189 s = self.trunc(repr(getattr(obj, k)))
190 except Exception as e:
191 w(' %s: %s' % (self.C(k, self.BOLD),
192 self.C('<error> %s' % str(e), self.RED)))
195 if k.startswith('__'):
196 if self.show_all or not k.endswith('__'):
197 w(' %s (skipping): %s' % (self.C(k, self.BOLD), s))
198 elif self.show_internal or not k.startswith('_'):
199 d(getattr(obj, k), name=k)
202 def dump(*args, **kwargs):
203 d = Dump(*args, **kwargs)