mirror of https://github.com/morpheus65535/bazarr
298 lines
9.4 KiB
Python
298 lines
9.4 KiB
Python
![]() |
# -*- coding: utf-8 -*-
|
||
|
"""
|
||
|
werkzeug.debug.repr
|
||
|
~~~~~~~~~~~~~~~~~~~
|
||
|
|
||
|
This module implements object representations for debugging purposes.
|
||
|
Unlike the default repr these reprs expose a lot more information and
|
||
|
produce HTML instead of ASCII.
|
||
|
|
||
|
Together with the CSS and JavaScript files of the debugger this gives
|
||
|
a colorful and more compact output.
|
||
|
|
||
|
:copyright: 2007 Pallets
|
||
|
:license: BSD-3-Clause
|
||
|
"""
|
||
|
import codecs
|
||
|
import re
|
||
|
import sys
|
||
|
from collections import deque
|
||
|
from traceback import format_exception_only
|
||
|
|
||
|
from .._compat import integer_types
|
||
|
from .._compat import iteritems
|
||
|
from .._compat import PY2
|
||
|
from .._compat import string_types
|
||
|
from .._compat import text_type
|
||
|
from ..utils import escape
|
||
|
|
||
|
|
||
|
missing = object()
|
||
|
_paragraph_re = re.compile(r"(?:\r\n|\r|\n){2,}")
|
||
|
RegexType = type(_paragraph_re)
|
||
|
|
||
|
|
||
|
HELP_HTML = """\
|
||
|
<div class=box>
|
||
|
<h3>%(title)s</h3>
|
||
|
<pre class=help>%(text)s</pre>
|
||
|
</div>\
|
||
|
"""
|
||
|
OBJECT_DUMP_HTML = """\
|
||
|
<div class=box>
|
||
|
<h3>%(title)s</h3>
|
||
|
%(repr)s
|
||
|
<table>%(items)s</table>
|
||
|
</div>\
|
||
|
"""
|
||
|
|
||
|
|
||
|
def debug_repr(obj):
|
||
|
"""Creates a debug repr of an object as HTML unicode string."""
|
||
|
return DebugReprGenerator().repr(obj)
|
||
|
|
||
|
|
||
|
def dump(obj=missing):
|
||
|
"""Print the object details to stdout._write (for the interactive
|
||
|
console of the web debugger.
|
||
|
"""
|
||
|
gen = DebugReprGenerator()
|
||
|
if obj is missing:
|
||
|
rv = gen.dump_locals(sys._getframe(1).f_locals)
|
||
|
else:
|
||
|
rv = gen.dump_object(obj)
|
||
|
sys.stdout._write(rv)
|
||
|
|
||
|
|
||
|
class _Helper(object):
|
||
|
"""Displays an HTML version of the normal help, for the interactive
|
||
|
debugger only because it requires a patched sys.stdout.
|
||
|
"""
|
||
|
|
||
|
def __repr__(self):
|
||
|
return "Type help(object) for help about object."
|
||
|
|
||
|
def __call__(self, topic=None):
|
||
|
if topic is None:
|
||
|
sys.stdout._write("<span class=help>%s</span>" % repr(self))
|
||
|
return
|
||
|
import pydoc
|
||
|
|
||
|
pydoc.help(topic)
|
||
|
rv = sys.stdout.reset()
|
||
|
if isinstance(rv, bytes):
|
||
|
rv = rv.decode("utf-8", "ignore")
|
||
|
paragraphs = _paragraph_re.split(rv)
|
||
|
if len(paragraphs) > 1:
|
||
|
title = paragraphs[0]
|
||
|
text = "\n\n".join(paragraphs[1:])
|
||
|
else: # pragma: no cover
|
||
|
title = "Help"
|
||
|
text = paragraphs[0]
|
||
|
sys.stdout._write(HELP_HTML % {"title": title, "text": text})
|
||
|
|
||
|
|
||
|
helper = _Helper()
|
||
|
|
||
|
|
||
|
def _add_subclass_info(inner, obj, base):
|
||
|
if isinstance(base, tuple):
|
||
|
for base in base:
|
||
|
if type(obj) is base:
|
||
|
return inner
|
||
|
elif type(obj) is base:
|
||
|
return inner
|
||
|
module = ""
|
||
|
if obj.__class__.__module__ not in ("__builtin__", "exceptions"):
|
||
|
module = '<span class="module">%s.</span>' % obj.__class__.__module__
|
||
|
return "%s%s(%s)" % (module, obj.__class__.__name__, inner)
|
||
|
|
||
|
|
||
|
class DebugReprGenerator(object):
|
||
|
def __init__(self):
|
||
|
self._stack = []
|
||
|
|
||
|
def _sequence_repr_maker(left, right, base=object(), limit=8): # noqa: B008, B902
|
||
|
def proxy(self, obj, recursive):
|
||
|
if recursive:
|
||
|
return _add_subclass_info(left + "..." + right, obj, base)
|
||
|
buf = [left]
|
||
|
have_extended_section = False
|
||
|
for idx, item in enumerate(obj):
|
||
|
if idx:
|
||
|
buf.append(", ")
|
||
|
if idx == limit:
|
||
|
buf.append('<span class="extended">')
|
||
|
have_extended_section = True
|
||
|
buf.append(self.repr(item))
|
||
|
if have_extended_section:
|
||
|
buf.append("</span>")
|
||
|
buf.append(right)
|
||
|
return _add_subclass_info(u"".join(buf), obj, base)
|
||
|
|
||
|
return proxy
|
||
|
|
||
|
list_repr = _sequence_repr_maker("[", "]", list)
|
||
|
tuple_repr = _sequence_repr_maker("(", ")", tuple)
|
||
|
set_repr = _sequence_repr_maker("set([", "])", set)
|
||
|
frozenset_repr = _sequence_repr_maker("frozenset([", "])", frozenset)
|
||
|
deque_repr = _sequence_repr_maker(
|
||
|
'<span class="module">collections.' "</span>deque([", "])", deque
|
||
|
)
|
||
|
del _sequence_repr_maker
|
||
|
|
||
|
def regex_repr(self, obj):
|
||
|
pattern = repr(obj.pattern)
|
||
|
if PY2:
|
||
|
pattern = pattern.decode("string-escape", "ignore")
|
||
|
else:
|
||
|
pattern = codecs.decode(pattern, "unicode-escape", "ignore")
|
||
|
if pattern[:1] == "u":
|
||
|
pattern = "ur" + pattern[1:]
|
||
|
else:
|
||
|
pattern = "r" + pattern
|
||
|
return u're.compile(<span class="string regex">%s</span>)' % pattern
|
||
|
|
||
|
def string_repr(self, obj, limit=70):
|
||
|
buf = ['<span class="string">']
|
||
|
r = repr(obj)
|
||
|
|
||
|
# shorten the repr when the hidden part would be at least 3 chars
|
||
|
if len(r) - limit > 2:
|
||
|
buf.extend(
|
||
|
(
|
||
|
escape(r[:limit]),
|
||
|
'<span class="extended">',
|
||
|
escape(r[limit:]),
|
||
|
"</span>",
|
||
|
)
|
||
|
)
|
||
|
else:
|
||
|
buf.append(escape(r))
|
||
|
|
||
|
buf.append("</span>")
|
||
|
out = u"".join(buf)
|
||
|
|
||
|
# if the repr looks like a standard string, add subclass info if needed
|
||
|
if r[0] in "'\"" or (r[0] in "ub" and r[1] in "'\""):
|
||
|
return _add_subclass_info(out, obj, (bytes, text_type))
|
||
|
|
||
|
# otherwise, assume the repr distinguishes the subclass already
|
||
|
return out
|
||
|
|
||
|
def dict_repr(self, d, recursive, limit=5):
|
||
|
if recursive:
|
||
|
return _add_subclass_info(u"{...}", d, dict)
|
||
|
buf = ["{"]
|
||
|
have_extended_section = False
|
||
|
for idx, (key, value) in enumerate(iteritems(d)):
|
||
|
if idx:
|
||
|
buf.append(", ")
|
||
|
if idx == limit - 1:
|
||
|
buf.append('<span class="extended">')
|
||
|
have_extended_section = True
|
||
|
buf.append(
|
||
|
'<span class="pair"><span class="key">%s</span>: '
|
||
|
'<span class="value">%s</span></span>'
|
||
|
% (self.repr(key), self.repr(value))
|
||
|
)
|
||
|
if have_extended_section:
|
||
|
buf.append("</span>")
|
||
|
buf.append("}")
|
||
|
return _add_subclass_info(u"".join(buf), d, dict)
|
||
|
|
||
|
def object_repr(self, obj):
|
||
|
r = repr(obj)
|
||
|
if PY2:
|
||
|
r = r.decode("utf-8", "replace")
|
||
|
return u'<span class="object">%s</span>' % escape(r)
|
||
|
|
||
|
def dispatch_repr(self, obj, recursive):
|
||
|
if obj is helper:
|
||
|
return u'<span class="help">%r</span>' % helper
|
||
|
if isinstance(obj, (integer_types, float, complex)):
|
||
|
return u'<span class="number">%r</span>' % obj
|
||
|
if isinstance(obj, string_types) or isinstance(obj, bytes):
|
||
|
return self.string_repr(obj)
|
||
|
if isinstance(obj, RegexType):
|
||
|
return self.regex_repr(obj)
|
||
|
if isinstance(obj, list):
|
||
|
return self.list_repr(obj, recursive)
|
||
|
if isinstance(obj, tuple):
|
||
|
return self.tuple_repr(obj, recursive)
|
||
|
if isinstance(obj, set):
|
||
|
return self.set_repr(obj, recursive)
|
||
|
if isinstance(obj, frozenset):
|
||
|
return self.frozenset_repr(obj, recursive)
|
||
|
if isinstance(obj, dict):
|
||
|
return self.dict_repr(obj, recursive)
|
||
|
if deque is not None and isinstance(obj, deque):
|
||
|
return self.deque_repr(obj, recursive)
|
||
|
return self.object_repr(obj)
|
||
|
|
||
|
def fallback_repr(self):
|
||
|
try:
|
||
|
info = "".join(format_exception_only(*sys.exc_info()[:2]))
|
||
|
except Exception: # pragma: no cover
|
||
|
info = "?"
|
||
|
if PY2:
|
||
|
info = info.decode("utf-8", "ignore")
|
||
|
return u'<span class="brokenrepr"><broken repr (%s)>' u"</span>" % escape(
|
||
|
info.strip()
|
||
|
)
|
||
|
|
||
|
def repr(self, obj):
|
||
|
recursive = False
|
||
|
for item in self._stack:
|
||
|
if item is obj:
|
||
|
recursive = True
|
||
|
break
|
||
|
self._stack.append(obj)
|
||
|
try:
|
||
|
try:
|
||
|
return self.dispatch_repr(obj, recursive)
|
||
|
except Exception:
|
||
|
return self.fallback_repr()
|
||
|
finally:
|
||
|
self._stack.pop()
|
||
|
|
||
|
def dump_object(self, obj):
|
||
|
repr = items = None
|
||
|
if isinstance(obj, dict):
|
||
|
title = "Contents of"
|
||
|
items = []
|
||
|
for key, value in iteritems(obj):
|
||
|
if not isinstance(key, string_types):
|
||
|
items = None
|
||
|
break
|
||
|
items.append((key, self.repr(value)))
|
||
|
if items is None:
|
||
|
items = []
|
||
|
repr = self.repr(obj)
|
||
|
for key in dir(obj):
|
||
|
try:
|
||
|
items.append((key, self.repr(getattr(obj, key))))
|
||
|
except Exception:
|
||
|
pass
|
||
|
title = "Details for"
|
||
|
title += " " + object.__repr__(obj)[1:-1]
|
||
|
return self.render_object_dump(items, title, repr)
|
||
|
|
||
|
def dump_locals(self, d):
|
||
|
items = [(key, self.repr(value)) for key, value in d.items()]
|
||
|
return self.render_object_dump(items, "Local variables in frame")
|
||
|
|
||
|
def render_object_dump(self, items, title, repr=None):
|
||
|
html_items = []
|
||
|
for key, value in items:
|
||
|
html_items.append(
|
||
|
"<tr><th>%s<td><pre class=repr>%s</pre>" % (escape(key), value)
|
||
|
)
|
||
|
if not html_items:
|
||
|
html_items.append("<tr><td><em>Nothing</em>")
|
||
|
return OBJECT_DUMP_HTML % {
|
||
|
"title": escape(title),
|
||
|
"repr": "<pre class=repr>%s</pre>" % repr if repr else "",
|
||
|
"items": "\n".join(html_items),
|
||
|
}
|