def parse_start_step(request, args):
"""
Parses common Colorizer parameters start, step, numbers.
Uses L{wikiutil.parseAttributes} and sanitizes the results.
Start and step must be a non negative number and default to 1,
numbers might be on, off, or none and defaults to on. On or off
means that numbers are switchable via JavaScript (html formatter),
disabled means that numbers are disabled completely.
attrdict is returned as last element in the tuple, to enable the
calling parser to extract further arguments.
@param request: a request instance
@param arg: the argument string
@returns: numbers, start, step, attrdict
"""
nums, start, step = 1, 1, 1
attrs, msg = wikiutil.parseAttributes(request, args)
if not msg:
try:
start = int(attrs.get('start','"1"')[1:-1])
except ValueError:
pass
try:
step = int(attrs.get('step','"1"')[1:-1])
except ValueError:
pass
if attrs.get('numbers','"on"')[1:-1].lower() in ('off', 'false', 'no'):
nums = 0
elif attrs.get('numbers','"on"')[1:-1].lower() in ('none', 'disable'):
nums = -1
return nums, start, step, attrs
def __init__ (self, raw, request, **kw):
self.raw = raw
self.request = request
self.moin_parser = WikiParser(raw, request, **kw)
self.out = kw.get('out', request)
attrs, msg = wikiutil.parseAttributes(request, kw.get('format_args',''))
def __init__(self, raw, request, **kw):
cfg = request.cfg
try:
self.bibtex2html = cfg.bibtex_bibtex2html
self.bibtex = cfg.bibtex_bibtex
except AttributeError:
pass
try:
self.bstfiles = cfg.bibtex_bstfiles
except AttributeError:
pass
self.raw = raw.encode('utf-8')
self.request = request
self.form = request.form
self._ = request.getText
self.out = kw.get('out', request)
attrs, msg = wikiutil.parseAttributes(request, kw.get('format_args',''))
self.style = attrs.get('style','"plain"')[1:-1]
self.hlinsdb = attrs.get('hlinsdb','"HlinsDatabase"')[1:-1]
self.abstract = self.keywords = self.usekeys = True
if attrs.get('abstract','"on"')[1:-1].lower() in ('off', 'no', 'none', 'false'):
self.abstract = False
if attrs.get('keywords','"on"')[1:-1].lower() in ('off', 'no', 'none', 'false'):
self.keywords = False
if attrs.get('usekeys','"on"')[1:-1].lower() in ('off', 'no', 'none', 'false'):
self.usekeys = False
def __init__(self, raw, request, **kw):
self.request = request
self.form = request.form
self.raw = raw
self._ = request.getText
self.args = kw.get('format_args', '')
attrs, msg = wikiutil.parseAttributes(request, self.args)
self.delim = attrs.get('delim', '')[1:-1]
def __init__(self, raw, request, **kw):
# save call arguments for later use in format()
self.raw = raw.encode('utf-8')
self.request = request
self.layoutformat = 'png'
self.graphengine = 'neato'
attrs, msg = wikiutil.parseAttributes(request,
kw.get('format_args', ''))
if 'engine' in attrs:
self.graphengine = attrs['engine'].encode('utf-8')[1:-1]
def parseDefinition(request, fielddef, fieldlist):
""" Parse a form field definition and return the HTML markup for it
"""
_ = request.getText
row = '<tr><td nowrap="nowrap" valign="top"> %s </td><td>%s</td></tr>\n'
fields, msg = wikiutil.parseAttributes(request, fielddef)
if not msg:
for required in _required_attributes:
if not fields.has_key(required):
msg = _('Required attribute "%(attrname)s" missing') % {
'attrname': required}
break
if msg:
# create visible error
result = row % (msg, fielddef)
elif fields['type'] == '"caption"':
# create a centered, bold italic caption
result = '<tr><td colspan="2" align="center"><em><strong>%s</strong></em></td></tr>\n' % (
fields['label'][1:-1])
else:
# for submit buttons, use `label` as the value
if fields['type'] == '"submit"':
fields['value'] = fields['label']
fields['label'] = ''
# make sure user cannot use a system name
fields['name'] = '"form_' + fields['name'][1:]
fieldlist.append(fields['name'][1:-1])
wrapper = ('<input', '>\n')
if fields['type'] == '"textarea"':
wrapper = ('<textarea', '></textarea>\n')
result = wrapper[0]
for key, val in fields.items():
if key == 'label': continue
result = '%s %s=%s' % (result, key, val)
result = result + wrapper[1]
#result = result + wikiutil.escape(`fields`)
if fields['type'] == '"submit"':
result = '<tr><td colspan="2" align="center">%s</td></tr>\n' % result
else:
result = row % (fields['label'][1:-1], result)
return result
def __init__(self, raw, request, **kw):
# save call arguments for later use in format()
self.raw = raw
self.request = request
# get args; 1st one is the macro name
args = kw.get('format_args', '').split()
self.macro_name = args[0]
# next args are options
args = ' '.join(args[1:])
self.attrs, msg = wikiutil.parseAttributes(request, args)
self.raw = "#if " + kw.get('format_args', '') + "\n" + self.raw
def __init__(self, raw, request, **kw):
# save call arguments for later use in format()
self.raw = raw ##.encode('utf-8')
self.request = request
self.attrs, msg = wikiutil.parseAttributes(request,
kw.get('format_args', ''))
# Some regexes that we will need
p1_re = "(?P<p1>.*?)"
p2_re = "(?P<p2>.*?)"
end_re = "( *//.*)?"
# a shapefile
self.sfi_re = re.compile(
r'\[ *shapefile=(?P<quote>[\'"])(?P<shapefile>.+?)(?P=quote) *]',
re.IGNORECASE)
# an URL
self.url_re = re.compile(
r'\[ *URL=(?P<quote>[\'"])(?P<url>.+?)(?P=quote) *]',
re.IGNORECASE)
# non-wiki URLs
self.notwiki_re = re.compile(r'[a-z0-9_]*:.*', re.IGNORECASE)
# include pseudo-macro
self.inc_re = re.compile(
r'\[\[ *Include *\( *%s( *, *%s)? *\) *\]\]%s' %
(p1_re, p2_re, end_re))
# set pseudo-macro
self.set_re = re.compile(
r'\[\[ *Set *\( *%s *, *(?P<quote>[\'"])%s(?P=quote) *\) *\]\]%s' %
(p1_re, p2_re, end_re))
# get pseudo-macro
self.get_re = re.compile(r'\[\[ *Get *\( *%s *\) *\]\]' % (p1_re))
def _getTableAttrs(self, attrdef):
# skip "|" and initial "<"
while attrdef and attrdef[0] == "|":
attrdef = attrdef[1:]
if not attrdef or attrdef[0] != "<":
return {}, ''
attrdef = attrdef[1:]
# extension for special table markup
def table_extension(key, parser, attrs, wiki_parser=self):
""" returns: tuple (found_flag, msg)
found_flag: whether we found something and were able to process it here
true for special stuff like 100% or - or #AABBCC
false for style xxx="yyy" attributes
msg: "" or an error msg
"""
_ = wiki_parser._
found = False
msg = ''
if key[0] in "0123456789":
token = parser.get_token()
if token != '%':
wanted = '%'
msg = _('Expected "%(wanted)s" after "%(key)s", got "%(token)s"') % {
'wanted': wanted, 'key': key, 'token': token}
else:
try:
dummy = int(key)
except ValueError:
msg = _('Expected an integer "%(key)s" before "%(token)s"') % {
'key': key, 'token': token}
else:
found = True
attrs['width'] = '"%s%%"' % key
elif key == '-':
arg = parser.get_token()
try:
dummy = int(arg)
except ValueError:
msg = _('Expected an integer "%(arg)s" after "%(key)s"') % {
'arg': arg, 'key': key}
else:
found = True
attrs['colspan'] = '"%s"' % arg
elif key == '|':
arg = parser.get_token()
try:
dummy = int(arg)
except ValueError:
msg = _('Expected an integer "%(arg)s" after "%(key)s"') % {
'arg': arg, 'key': key}
else:
found = True
attrs['rowspan'] = '"%s"' % arg
elif key == '(':
found = True
attrs['align'] = '"left"'
elif key == ':':
found = True
attrs['align'] = '"center"'
elif key == ')':
found = True
attrs['align'] = '"right"'
elif key == '^':
found = True
attrs['valign'] = '"top"'
elif key == 'v':
found = True
attrs['valign'] = '"bottom"'
elif key == '#':
arg = parser.get_token()
try:
if len(arg) != 6: raise ValueError
dummy = int(arg, 16)
except ValueError:
msg = _('Expected a color value "%(arg)s" after "%(key)s"') % {
'arg': arg, 'key': key}
else:
found = True
attrs['bgcolor'] = '"#%s"' % arg
return found, self.formatter.rawHTML(msg)
# scan attributes
attr, msg = wikiutil.parseAttributes(self.request, attrdef, '>', table_extension)
if msg:
msg = '<strong class="highlight">%s</strong>' % msg
#self.request.log("parseAttributes returned %r" % attr)
return attr, msg
def _getTableAttrs(self, attrdef):
# skip "|" and initial "<"
while attrdef and attrdef[0] == "|":
attrdef = attrdef[1:]
if not attrdef or attrdef[0] != "<":
return {}, ''
attrdef = attrdef[1:]
# extension for special table markup
def table_extension(key, parser, attrs, wiki_parser=self):
_ = wiki_parser._
msg = ''
if key[0] in "0123456789":
token = parser.get_token()
if token != '%':
wanted = '%'
msg = _('Expected "%(wanted)s" after "%(key)s", got "%(token)s"') % {
'wanted': wanted, 'key': key, 'token': token}
else:
try:
dummy = int(key)
except ValueError:
msg = _('Expected an integer "%(key)s" before "%(token)s"') % {
'key': key, 'token': token}
else:
attrs['width'] = '"%s%%"' % key
elif key == '-':
arg = parser.get_token()
try:
dummy = int(arg)
except ValueError:
msg = _('Expected an integer "%(arg)s" after "%(key)s"') % {
'arg': arg, 'key': key}
else:
attrs['colspan'] = '"%s"' % arg
elif key == '|':
arg = parser.get_token()
try:
dummy = int(arg)
except ValueError:
msg = _('Expected an integer "%(arg)s" after "%(key)s"') % {
'arg': arg, 'key': key}
else:
attrs['rowspan'] = '"%s"' % arg
elif key == '(':
attrs['align'] = '"left"'
elif key == ':':
attrs['align'] = '"center"'
elif key == ')':
attrs['align'] = '"right"'
elif key == '^':
attrs['valign'] = '"top"'
elif key == 'v':
attrs['valign'] = '"bottom"'
elif key == '#':
arg = parser.get_token()
try:
if len(arg) != 6: raise ValueError
dummy = int(arg, 16)
except ValueError:
msg = _('Expected a color value "%(arg)s" after "%(key)s"') % {
'arg': arg, 'key': key}
else:
attrs['bgcolor'] = '"#%s"' % arg
else:
msg = None
#print "key: %s\nattrs: %s" % (key, str(attrs))
return msg
# scan attributes
attr, msg = wikiutil.parseAttributes(self.request, attrdef, '>', table_extension)
if msg: msg = '<strong class="highlight">%s</strong>' % msg
#print attr
return attr, msg
def _metatable_parseargs(request, args, cat_re, temp_re):
# Arg placeholders
argset = set([])
keyspec = list()
excluded_keys = list()
orderspec = list()
limitregexps = dict()
limitops = dict()
# Capacity for storing indirection keys in metadata comparisons
# and regexps, eg. k->c=/.+/
indirection_keys = list()
# list styles
styles = dict()
# Flag: were there page arguments?
pageargs = False
# Regex preprocessing
for arg in (x.strip() for x in args.split(',') if x.strip()):
# metadata key spec, move on
if arg.startswith('||') and arg.endswith('||'):
# take order, strip empty ones, look at styles
for key in arg.split('||'):
if not key:
continue
# Grab styles
if key.startswith('<') and '>' in key:
style = parseAttributes(request, key[1:], '>')
key = key[key.index('>') + 1:].strip()
if style:
styles[key] = style[0]
# Grab key exclusions
if key.startswith('!'):
excluded_keys.append(key.lstrip('!'))
continue
keyspec.append(key.strip())
continue
op_match = False
# Check for Python operator comparisons
for op in OPERATORS:
if op in arg:
data = arg.rsplit(op)
# If this is not a comparison but indirection,
# continue. Good: k->s>3, bad: k->s=/.+/
if op == '>' and data[0].endswith('-'):
continue
# Must have real comparison
if not len(data) == 2:
if op == '==':
data.append('')
else:
continue
key, comp = map(string.strip, data)
# Add indirection key
if '->' in key:
indirection_keys.append(key)
limitops.setdefault(key, list()).append((comp, op))
op_match = True
# One of the operators matched, no need to go forward
if op_match:
break
# One of the operators matched, process next arg
if op_match:
continue
# Metadata regexp, move on
if '=' in arg:
data = arg.split("=")
key = data[0]
# Add indirection key
if '->' in key:
indirection_keys.append(key)
val = '='.join(data[1:])
# Assume that value limits are regexps, if
# not, escape them into exact regexp matches
if not REGEX_RE.match(val):
from MoinMoin.parser.text_moin_wiki import Parser
# If the value is a page, make it a non-matching
# regexp so that all link variations will generate a
# match. An alternative would be to match from links
# also, but in this case old-style metalinks, which
# cannot be edited, would appear in metatables, which
# is not wanted (old-style eg. [[Page| key: Page]])
# Only allow non-matching regexp for values if they
# are WikiWords. Eg. 'WikiWord some text' would match
# 'WikiWord', emulating ye olde matching behaviour,
# but 'nonwikiword some text' would not match
# 'nonwikiword'
if re.match(Parser.word_rule_js, val):
re_val = "(%s|" % (re.escape(val))
else:
re_val = "(^%s$|" % (re.escape(val))
# or as bracketed link
re_val += "(?P<sta>\[\[)%s(?(sta)\]\])|" % (re.escape(val))
# or as commented bracketed link
re_val += "(?P<stb>\[\[)%s(?(stb)\|[^\]]*\]\]))" % \
(re.escape(val))
limitregexps.setdefault(key, set()).add(
re.compile(re_val, re.UNICODE))
# else strip the //:s
else:
if len(val) > 1:
val = val[1:-1]
limitregexps.setdefault(key, set()).add(
re.compile(val, re.IGNORECASE | re.UNICODE))
continue
# order spec
if arg.startswith('>>') or arg.startswith('<<'):
# eg. [('<<', 'koo'), ('>>', 'kk')]
orderspec = re.findall('(?:(<<|>>)([^<>]+))', arg)
continue
# Ok, we have a page arg, i.e. a page or page regexp in args
pageargs = True
# Normal pages, check perms, encode and move on
if not REGEX_RE.match(arg):
# Fix relative links
if (arg.startswith('/') or arg.startswith('./')
or arg.startswith('../')):
arg = AbsPageName(request.page.page_name, arg)
argset.add(arg)
continue
# Ok, it's a page regexp
# if there's something wrong with the regexp, ignore it and move on
try:
arg = arg[1:-1]
# Fix relative links
if (arg.startswith('/') or arg.startswith('./')
or arg.startswith('../')):
arg = AbsPageName(request.page.page_name, arg)
page_re = re.compile("%s" % arg)
except:
continue
# Get all pages, check which of them match to the supplied regexp
for page in request.graphdata:
if page_re.match(page):
argset.add(page)
return (argset, pageargs, keyspec, excluded_keys, orderspec, limitregexps,
limitops, indirection_keys, styles)
def _getTableAttrs(self, attrdef):
# skip "|" and initial "<"
while attrdef and attrdef[0] == "|":
attrdef = attrdef[1:]
if not attrdef or attrdef[0] != "<":
return {}, ''
attrdef = attrdef[1:]
# extension for special table markup
def table_extension(key, parser, attrs, wiki_parser=self):
""" returns: tuple (found_flag, msg)
found_flag: whether we found something and were able to process it here
true for special stuff like 100% or - or #AABBCC
false for style xxx="yyy" attributes
msg: "" or an error msg
"""
_ = wiki_parser._
found = False
msg = ''
if key[0] in "0123456789":
token = parser.get_token()
if token != '%':
wanted = '%'
msg = _(
'Expected "%(wanted)s" after "%(key)s", got "%(token)s"'
) % {
'wanted': wanted,
'key': key,
'token': token
}
else:
try:
dummy = int(key)
except ValueError:
msg = _(
'Expected an integer "%(key)s" before "%(token)s"'
) % {
'key': key,
'token': token
}
else:
found = True
attrs['width'] = '"%s%%"' % key
elif key == '-':
arg = parser.get_token()
try:
dummy = int(arg)
except ValueError:
msg = _(
'Expected an integer "%(arg)s" after "%(key)s"') % {
'arg': arg,
'key': key
}
else:
found = True
attrs['colspan'] = '"%s"' % arg
elif key == '|':
arg = parser.get_token()
try:
dummy = int(arg)
except ValueError:
msg = _(
'Expected an integer "%(arg)s" after "%(key)s"') % {
'arg': arg,
'key': key
}
else:
found = True
attrs['rowspan'] = '"%s"' % arg
elif key == '(':
found = True
attrs['align'] = '"left"'
elif key == ':':
found = True
attrs['align'] = '"center"'
elif key == ')':
found = True
attrs['align'] = '"right"'
elif key == '^':
found = True
attrs['valign'] = '"top"'
elif key == 'v':
found = True
attrs['valign'] = '"bottom"'
elif key == '#':
arg = parser.get_token()
try:
if len(arg) != 6: raise ValueError
dummy = int(arg, 16)
except ValueError:
msg = _(
'Expected a color value "%(arg)s" after "%(key)s"') % {
'arg': arg,
'key': key
}
else:
found = True
attrs['bgcolor'] = '"#%s"' % arg
return found, self.formatter.rawHTML(msg)
# scan attributes
attr, msg = wikiutil.parseAttributes(self.request, attrdef, '>',
table_extension)
if msg:
msg = '<strong class="highlight">%s</strong>' % msg
#self.request.log("parseAttributes returned %r" % attr)
return attr, msg
def _metatable_parseargs(request, args, cat_re, temp_re):
# Arg placeholders
argset = set([])
keyspec = list()
excluded_keys = list()
orderspec = list()
limitregexps = dict()
limitops = dict()
# Capacity for storing indirection keys in metadata comparisons
# and regexps, eg. k->c=/.+/
indirection_keys = list()
# list styles
styles = dict()
# Flag: were there page arguments?
pageargs = False
# Regex preprocessing
for arg in (x.strip() for x in args.split(',') if x.strip()):
# metadata key spec, move on
if arg.startswith('||') and arg.endswith('||'):
# take order, strip empty ones, look at styles
for key in arg.split('||'):
if not key:
continue
# Grab styles
if key.startswith('<') and '>' in key:
style = parseAttributes(request,
key[1:], '>')
key = key[key.index('>') + 1:].strip()
if style:
styles[key] = style[0]
# Grab key exclusions
if key.startswith('!'):
excluded_keys.append(key.lstrip('!'))
continue
keyspec.append(key.strip())
continue
op_match = False
# Check for Python operator comparisons
for op in OPERATORS:
if op in arg:
data = arg.rsplit(op)
# If this is not a comparison but indirection,
# continue. Good: k->s>3, bad: k->s=/.+/
if op == '>' and data[0].endswith('-'):
continue
# Must have real comparison
if not len(data) == 2:
if op == '==':
data.append('')
else:
continue
key, comp = map(string.strip, data)
# Add indirection key
if '->' in key:
indirection_keys.append(key)
limitops.setdefault(key, list()).append((comp, op))
op_match = True
# One of the operators matched, no need to go forward
if op_match:
break
# One of the operators matched, process next arg
if op_match:
continue
# Metadata regexp, move on
if '=' in arg:
data = arg.split("=")
key = data[0]
# Add indirection key
if '->' in key:
indirection_keys.append(key)
val = '='.join(data[1:])
# Assume that value limits are regexps, if
# not, escape them into exact regexp matches
if not REGEX_RE.match(val):
from MoinMoin.parser.text_moin_wiki import Parser
# If the value is a page, make it a non-matching
# regexp so that all link variations will generate a
# match. An alternative would be to match from links
# also, but in this case old-style metalinks, which
# cannot be edited, would appear in metatables, which
# is not wanted (old-style eg. [[Page| key: Page]])
# Only allow non-matching regexp for values if they
# are WikiWords. Eg. 'WikiWord some text' would match
# 'WikiWord', emulating ye olde matching behaviour,
# but 'nonwikiword some text' would not match
# 'nonwikiword'
if re.match(Parser.word_rule_js, val):
re_val = "(%s|" % (re.escape(val))
else:
re_val = "(^%s$|" % (re.escape(val))
# or as bracketed link
re_val += "(?P<sta>\[\[)%s(?(sta)\]\])|" % (re.escape(val))
# or as commented bracketed link
re_val += "(?P<stb>\[\[)%s(?(stb)\|[^\]]*\]\]))" % \
(re.escape(val))
limitregexps.setdefault(
key, set()).add(re.compile(re_val, re.UNICODE))
# else strip the //:s
else:
if len(val) > 1:
val = val[1:-1]
limitregexps.setdefault(
key, set()).add(re.compile(val,
re.IGNORECASE | re.UNICODE))
continue
# order spec
if arg.startswith('>>') or arg.startswith('<<'):
# eg. [('<<', 'koo'), ('>>', 'kk')]
orderspec = re.findall('(?:(<<|>>)([^<>]+))', arg)
continue
# Ok, we have a page arg, i.e. a page or page regexp in args
pageargs = True
# Normal pages, check perms, encode and move on
if not REGEX_RE.match(arg):
# Fix relative links
if (arg.startswith('/') or arg.startswith('./') or
arg.startswith('../')):
arg = AbsPageName(request.page.page_name, arg)
argset.add(arg)
continue
# Ok, it's a page regexp
# if there's something wrong with the regexp, ignore it and move on
try:
arg = arg[1:-1]
# Fix relative links
if (arg.startswith('/') or arg.startswith('./') or
arg.startswith('../')):
arg = AbsPageName(request.page.page_name, arg)
page_re = re.compile("%s" % arg)
except:
continue
# Get all pages, check which of them match to the supplied regexp
for page in request.graphdata:
if page_re.match(page):
argset.add(page)
return (argset, pageargs, keyspec, excluded_keys, orderspec,
limitregexps, limitops, indirection_keys, styles)
def _getTableAttrs(self, attrdef):
# skip "|" and initial "<"
while attrdef and attrdef[0] == "|":
attrdef = attrdef[1:]
if not attrdef or attrdef[0] != "<":
return {}, ""
attrdef = attrdef[1:]
# extension for special table markup
def table_extension(key, parser, attrs, wiki_parser=self):
""" returns: tuple (found_flag, msg)
found_flag: whether we found something and were able to process it here
true for special stuff like 100% or - or #AABBCC
false for style xxx="yyy" attributes
msg: "" or an error msg
"""
_ = wiki_parser._
found = False
msg = ""
if key[0] in "0123456789":
token = parser.get_token()
if token != "%":
wanted = "%"
msg = _('Expected "%(wanted)s" after "%(key)s", got "%(token)s"') % {
"wanted": wanted,
"key": key,
"token": token,
}
else:
try:
dummy = int(key)
except ValueError:
msg = _('Expected an integer "%(key)s" before "%(token)s"') % {"key": key, "token": token}
else:
found = True
attrs["width"] = '"%s%%"' % key
elif key == "-":
arg = parser.get_token()
try:
dummy = int(arg)
except ValueError:
msg = _('Expected an integer "%(arg)s" after "%(key)s"') % {"arg": arg, "key": key}
else:
found = True
attrs["colspan"] = '"%s"' % arg
elif key == "|":
arg = parser.get_token()
try:
dummy = int(arg)
except ValueError:
msg = _('Expected an integer "%(arg)s" after "%(key)s"') % {"arg": arg, "key": key}
else:
found = True
attrs["rowspan"] = '"%s"' % arg
elif key == "(":
found = True
attrs["align"] = '"left"'
elif key == ":":
found = True
attrs["align"] = '"center"'
elif key == ")":
found = True
attrs["align"] = '"right"'
elif key == "^":
found = True
attrs["valign"] = '"top"'
elif key == "v":
found = True
attrs["valign"] = '"bottom"'
elif key == "#":
arg = parser.get_token()
try:
if len(arg) != 6:
raise ValueError
dummy = int(arg, 16)
except ValueError:
msg = _('Expected a color value "%(arg)s" after "%(key)s"') % {"arg": arg, "key": key}
else:
found = True
attrs["bgcolor"] = '"#%s"' % arg
return found, self.formatter.rawHTML(msg)
# scan attributes
attr, msg = wikiutil.parseAttributes(self.request, attrdef, ">", table_extension)
if msg:
msg = '<strong class="highlight">%s</strong>' % msg
return attr, msg