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from rpython.rlib import rutf8
from pypy.interpreter.baseobjspace import W_Root
from pypy.interpreter.error import OperationError, oefmt
from pypy.interpreter.typedef import TypeDef, interp_attrproperty
from pypy.interpreter.typedef import GetSetProperty
from pypy.interpreter.gateway import interp2app
QUOTE_MINIMAL, QUOTE_ALL, QUOTE_NONNUMERIC, QUOTE_NONE = range(4)
class W_Dialect(W_Root):
_immutable_fields_ = [
"dialect",
"delimiter",
"doublequote",
"escapechar",
"lineterminator",
"quotechar",
"quoting",
"skipinitialspace",
"strict",
]
def reduce_ex_w(self, space, w_protocol):
raise OperationError(space.w_TypeError,
space.newtext("can't pickle _csv.Dialect objects"))
def _fetch(space, w_dialect, name):
return space.findattr(w_dialect, space.newtext(name))
def _get_bool(space, w_src, default):
if w_src is None:
return default
return space.is_true(w_src)
def _get_int(space, w_src, default, attrname):
if w_src is None:
return default
try:
return space.int_w(w_src)
except OperationError as e:
if e.match(space, space.w_TypeError):
raise oefmt(space.w_TypeError, '"%s" must be an int', attrname)
raise
def _get_str(space, w_src, default, attrname):
if w_src is None:
return default
try:
return space.text_w(w_src)
except OperationError as e:
if e.match(space, space.w_TypeError):
raise oefmt(space.w_TypeError, '"%s" must be a string', attrname)
raise
def _get_codepoint(space, w_src, default, name):
if w_src is None:
return default
if space.is_w(w_src, space.w_None):
return 0
if not space.isinstance_w(w_src, space.w_unicode):
raise oefmt(space.w_TypeError, '"%s" must be string, not %T', name, w_src)
src, length = space.utf8_len_w(w_src)
if length == 1:
res = rutf8.codepoint_at_pos(src, 0)
assert res >= 0
return res
if len(src) == 0:
return 0
raise oefmt(space.w_TypeError, '"%s" must be a 1-character string', name)
def _build_dialect(space, w_dialect, w_delimiter, w_doublequote,
w_escapechar, w_lineterminator, w_quotechar, w_quoting,
w_skipinitialspace, w_strict):
if w_dialect is not None:
if space.isinstance_w(w_dialect, space.w_unicode):
w_module = space.getbuiltinmodule('_csv')
w_dialect = space.call_method(w_module, 'get_dialect', w_dialect)
if (isinstance(w_dialect, W_Dialect) and
w_delimiter is None and
w_doublequote is None and
w_escapechar is None and
w_lineterminator is None and
w_quotechar is None and
w_quoting is None and
w_skipinitialspace is None and
w_strict is None):
return w_dialect
if w_delimiter is None:
w_delimiter = _fetch(space, w_dialect, 'delimiter')
if w_doublequote is None:
w_doublequote = _fetch(space, w_dialect, 'doublequote')
if w_escapechar is None:
w_escapechar = _fetch(space, w_dialect, 'escapechar')
if w_lineterminator is None:
w_lineterminator = _fetch(space, w_dialect, 'lineterminator')
if w_quotechar is None:
w_quotechar = _fetch(space, w_dialect, 'quotechar')
if w_quoting is None:
w_quoting = _fetch(space, w_dialect, 'quoting')
if w_skipinitialspace is None:
w_skipinitialspace = _fetch(space, w_dialect, 'skipinitialspace')
if w_strict is None:
w_strict = _fetch(space, w_dialect, 'strict')
dialect = W_Dialect()
dialect.delimiter = _get_codepoint(space, w_delimiter, ord(u','), 'delimiter')
dialect.doublequote = _get_bool(space, w_doublequote, True)
dialect.escapechar = _get_codepoint(space, w_escapechar, ord(u'\0'), 'escapechar')
dialect.lineterminator = _get_str(space, w_lineterminator, '\r\n', 'lineterminator')
dialect.quotechar = _get_codepoint(space, w_quotechar, ord(u'"'), 'quotechar')
tmp_quoting = _get_int(space, w_quoting, QUOTE_MINIMAL, 'quoting')
dialect.skipinitialspace = _get_bool(space, w_skipinitialspace, False)
dialect.strict = _get_bool(space, w_strict, False)
# validate options
if not (0 <= tmp_quoting < 4):
raise oefmt(space.w_TypeError, 'bad "quoting" value')
if dialect.delimiter == 0:
raise oefmt(space.w_TypeError,
'"delimiter" must be a 1-character string')
if space.is_w(w_quotechar, space.w_None) and w_quoting is None:
tmp_quoting = QUOTE_NONE
if tmp_quoting != QUOTE_NONE and dialect.quotechar == 0:
raise oefmt(space.w_TypeError,
"quotechar must be set if quoting enabled")
dialect.quoting = tmp_quoting
return dialect
def W_Dialect___new__(space, w_subtype, w_dialect = None,
w_delimiter = None,
w_doublequote = None,
w_escapechar = None,
w_lineterminator = None,
w_quotechar = None,
w_quoting = None,
w_skipinitialspace = None,
w_strict = None,
):
dialect = _build_dialect(space, w_dialect, w_delimiter, w_doublequote,
w_escapechar, w_lineterminator, w_quotechar,
w_quoting, w_skipinitialspace, w_strict)
if space.is_w(w_subtype, space.gettypeobject(W_Dialect.typedef)):
return dialect
else:
subdialect = space.allocate_instance(W_Dialect, w_subtype)
subdialect.delimiter = dialect.delimiter
subdialect.doublequote = dialect.doublequote
subdialect.escapechar = dialect.escapechar
subdialect.lineterminator = dialect.lineterminator
subdialect.quotechar = dialect.quotechar
subdialect.quoting = dialect.quoting
subdialect.skipinitialspace = dialect.skipinitialspace
subdialect.strict = dialect.strict
return subdialect
def _get_escapechar(space, dialect):
if dialect.escapechar == 0:
return space.w_None
s = rutf8.unichr_as_utf8(dialect.escapechar)
return space.newutf8(s, 1)
def _get_quotechar(space, dialect):
if dialect.quotechar == 0:
return space.w_None
s = rutf8.unichr_as_utf8(dialect.quotechar)
return space.newutf8(s, 1)
def _get_delimiter(space, dialect):
s = rutf8.unichr_as_utf8(dialect.delimiter)
return space.newutf8(s, 1)
W_Dialect.typedef = TypeDef(
'_csv.Dialect',
__new__ = interp2app(W_Dialect___new__),
__reduce_ex__ = interp2app(W_Dialect.reduce_ex_w),
delimiter = GetSetProperty(_get_delimiter, cls=W_Dialect),
doublequote = interp_attrproperty('doublequote', W_Dialect,
wrapfn='newbool'),
escapechar = GetSetProperty(_get_escapechar, cls=W_Dialect),
lineterminator = interp_attrproperty('lineterminator', W_Dialect,
wrapfn='newtext'),
quotechar = GetSetProperty(_get_quotechar, cls=W_Dialect),
quoting = interp_attrproperty('quoting', W_Dialect,
wrapfn='newint'),
skipinitialspace = interp_attrproperty('skipinitialspace', W_Dialect,
wrapfn='newbool'),
strict = interp_attrproperty('strict', W_Dialect,
wrapfn='newbool'),
__doc__ = """CSV dialect
The Dialect type records CSV parsing and generation options.
""")
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