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import py
from rpython.rtyper.lltypesystem import lltype, rffi
from rpython.translator.tool.cbuild import ExternalCompilationInfo
from rpython.translator import cdir
from rpython.rlib import rutf8
UNICODE_REPLACEMENT_CHARACTER = u'\uFFFD'.encode("utf8")
class EncodeDecodeError(Exception):
def __init__(self, start, end, reason):
self.start = start
self.end = end
self.reason = reason
def __repr__(self):
return 'EncodeDecodeError(%r, %r, %r)' % (self.start, self.end,
self.reason)
srcdir = py.path.local(__file__).dirpath()
codecs = [
# _codecs_cn
'gb2312', 'gbk', 'gb18030', 'hz',
# _codecs_hk
'big5hkscs',
# _codecs_iso2022
'iso2022_kr', 'iso2022_jp', 'iso2022_jp_1', 'iso2022_jp_2',
'iso2022_jp_2004', 'iso2022_jp_3', 'iso2022_jp_ext',
# _codecs_jp
'shift_jis', 'cp932', 'euc_jp', 'shift_jis_2004',
'euc_jis_2004', 'euc_jisx0213', 'shift_jisx0213',
# _codecs_kr
'euc_kr', 'cp949', 'johab',
# _codecs_tw
'big5', 'cp950',
]
eci = ExternalCompilationInfo(
separate_module_files = [
srcdir.join('src', 'cjkcodecs', '_codecs_cn.c'),
srcdir.join('src', 'cjkcodecs', '_codecs_hk.c'),
srcdir.join('src', 'cjkcodecs', '_codecs_iso2022.c'),
srcdir.join('src', 'cjkcodecs', '_codecs_jp.c'),
srcdir.join('src', 'cjkcodecs', '_codecs_kr.c'),
srcdir.join('src', 'cjkcodecs', '_codecs_tw.c'),
srcdir.join('src', 'cjkcodecs', 'multibytecodec.c'),
],
includes = ['src/cjkcodecs/multibytecodec.h'],
include_dirs = [str(srcdir), cdir],
)
MBERR_TOOSMALL = -1 # insufficient output buffer space
MBERR_TOOFEW = -2 # incomplete input buffer
MBERR_INTERNAL = -3 # internal runtime error
MBERR_NOMEMORY = -4 # out of memory
MULTIBYTECODEC_P = rffi.COpaquePtr('struct MultibyteCodec_s',
compilation_info=eci)
def llexternal(*args, **kwds):
kwds.setdefault('compilation_info', eci)
kwds.setdefault('sandboxsafe', True)
kwds.setdefault('_nowrapper', True)
return rffi.llexternal(*args, **kwds)
def getter_for(name):
return llexternal('pypy_cjkcodec_%s' % name, [], MULTIBYTECODEC_P)
_codecs_getters = dict([(name, getter_for(name)) for name in codecs])
assert len(_codecs_getters) == len(codecs)
def getcodec(name):
getter = _codecs_getters[name]
return getter()
# ____________________________________________________________
# Decoding
DECODEBUF_P = rffi.COpaquePtr('struct pypy_cjk_dec_s', compilation_info=eci)
pypy_cjk_dec_new = llexternal('pypy_cjk_dec_new',
[MULTIBYTECODEC_P], DECODEBUF_P)
pypy_cjk_dec_init = llexternal('pypy_cjk_dec_init',
[DECODEBUF_P, rffi.CCHARP, rffi.SSIZE_T],
rffi.SSIZE_T)
pypy_cjk_dec_free = llexternal('pypy_cjk_dec_free', [DECODEBUF_P],
lltype.Void)
pypy_cjk_dec_chunk = llexternal('pypy_cjk_dec_chunk', [DECODEBUF_P],
rffi.SSIZE_T)
pypy_cjk_dec_outbuf = llexternal('pypy_cjk_dec_outbuf', [DECODEBUF_P],
rffi.CWCHARP)
pypy_cjk_dec_outlen = llexternal('pypy_cjk_dec_outlen', [DECODEBUF_P],
rffi.SSIZE_T)
pypy_cjk_dec_inbuf_remaining = llexternal('pypy_cjk_dec_inbuf_remaining',
[DECODEBUF_P], rffi.SSIZE_T)
pypy_cjk_dec_inbuf_consumed = llexternal('pypy_cjk_dec_inbuf_consumed',
[DECODEBUF_P], rffi.SSIZE_T)
pypy_cjk_dec_replace_on_error = llexternal('pypy_cjk_dec_replace_on_error',
[DECODEBUF_P, rffi.CWCHARP,
rffi.SSIZE_T, rffi.SSIZE_T],
rffi.SSIZE_T)
def decode(space, codec, stringdata, errors="strict", errorcb=None, namecb=None):
decodebuf = pypy_cjk_dec_new(codec)
if not decodebuf:
raise MemoryError
try:
return decodeex(space, decodebuf, stringdata, errors, errorcb, namecb)
finally:
pypy_cjk_dec_free(decodebuf)
def decodeex(space, decodebuf, stringdata, errors="strict", errorcb=None, namecb=None,
ignore_error=0):
inleft = len(stringdata)
with rffi.scoped_nonmovingbuffer(stringdata) as inbuf:
if pypy_cjk_dec_init(decodebuf, inbuf, inleft) < 0:
raise MemoryError
while True:
r = pypy_cjk_dec_chunk(decodebuf)
if r == 0 or r == ignore_error:
break
multibytecodec_decerror(space, decodebuf, r, errors,
errorcb, namecb, stringdata)
src = pypy_cjk_dec_outbuf(decodebuf)
length = pypy_cjk_dec_outlen(decodebuf)
return rffi.wcharpsize2utf8(src, length) # assumes no out-of-range chars
def multibytecodec_decerror(space, decodebuf, e, errors,
errorcb, namecb, stringdata):
if e > 0:
reason = "illegal multibyte sequence"
esize = e
elif e == MBERR_TOOFEW:
reason = "incomplete multibyte sequence"
esize = pypy_cjk_dec_inbuf_remaining(decodebuf)
elif e == MBERR_NOMEMORY:
raise MemoryError
else:
raise RuntimeError
#
# compute the unicode to use as a replacement -> 'replace', and
# the current position in the input 'unicodedata' -> 'end'
start = pypy_cjk_dec_inbuf_consumed(decodebuf)
end = start + esize
if errors == "strict":
raise EncodeDecodeError(start, end, reason)
elif errors == "ignore":
replace = ""
elif errors == "replace":
replace = UNICODE_REPLACEMENT_CHARACTER
else:
assert errorcb
w_s = space.newbytes(stringdata)
replace, end, rettype, _, _ = errorcb(errors, namecb, reason,
w_s, start, end)
# 'replace' is UTF8 encoded unicode, rettype is 'u'
lgt = rutf8.codepoints_in_utf8(replace)
inbuf = rffi.utf82wcharp(replace, lgt)
try:
r = pypy_cjk_dec_replace_on_error(decodebuf, inbuf, lgt, end)
finally:
lltype.free(inbuf, flavor='raw')
if r == MBERR_NOMEMORY:
raise MemoryError
# ____________________________________________________________
# Encoding
ENCODEBUF_P = rffi.COpaquePtr('struct pypy_cjk_enc_s', compilation_info=eci)
pypy_cjk_enc_new = llexternal('pypy_cjk_enc_new',
[MULTIBYTECODEC_P], ENCODEBUF_P)
pypy_cjk_enc_init = llexternal('pypy_cjk_enc_init',
[ENCODEBUF_P, rffi.CWCHARP, rffi.SSIZE_T],
rffi.SSIZE_T)
pypy_cjk_enc_free = llexternal('pypy_cjk_enc_free', [ENCODEBUF_P],
lltype.Void)
pypy_cjk_enc_chunk = llexternal('pypy_cjk_enc_chunk',
[ENCODEBUF_P, rffi.SSIZE_T], rffi.SSIZE_T)
pypy_cjk_enc_reset = llexternal('pypy_cjk_enc_reset', [ENCODEBUF_P],
rffi.SSIZE_T)
pypy_cjk_enc_outbuf = llexternal('pypy_cjk_enc_outbuf', [ENCODEBUF_P],
rffi.CCHARP)
pypy_cjk_enc_outlen = llexternal('pypy_cjk_enc_outlen', [ENCODEBUF_P],
rffi.SSIZE_T)
pypy_cjk_enc_inbuf_remaining = llexternal('pypy_cjk_enc_inbuf_remaining',
[ENCODEBUF_P], rffi.SSIZE_T)
pypy_cjk_enc_inbuf_consumed = llexternal('pypy_cjk_enc_inbuf_consumed',
[ENCODEBUF_P], rffi.SSIZE_T)
pypy_cjk_enc_replace_on_error = llexternal('pypy_cjk_enc_replace_on_error',
[ENCODEBUF_P, rffi.CCHARP,
rffi.SSIZE_T, rffi.SSIZE_T],
rffi.SSIZE_T)
pypy_cjk_enc_getcodec = llexternal('pypy_cjk_enc_getcodec',
[ENCODEBUF_P], MULTIBYTECODEC_P)
pypy_cjk_enc_copystate = llexternal('pypy_cjk_enc_copystate',
[ENCODEBUF_P, ENCODEBUF_P], lltype.Void)
MBENC_FLUSH = 1
MBENC_RESET = 2
def encode(space, codec, unicodedata, length, errors="strict", errorcb=None,
namecb=None, copystate=lltype.nullptr(ENCODEBUF_P.TO)):
encodebuf = pypy_cjk_enc_new(codec)
if not encodebuf:
raise MemoryError
if copystate:
pypy_cjk_enc_copystate(encodebuf, copystate)
try:
return encodeex(space, encodebuf, unicodedata, length, errors, errorcb, namecb)
finally:
if copystate:
pypy_cjk_enc_copystate(copystate, encodebuf)
pypy_cjk_enc_free(encodebuf)
def encodeex(space, encodebuf, utf8data, length, errors="strict", errorcb=None,
namecb=None, ignore_error=0):
inleft = length
inbuf = rffi.utf82wcharp(utf8data, length)
w_s = space.newtext(utf8data)
try:
if pypy_cjk_enc_init(encodebuf, inbuf, inleft) < 0:
raise MemoryError
if ignore_error == 0:
flags = MBENC_FLUSH | MBENC_RESET
else:
flags = 0
while True:
r = pypy_cjk_enc_chunk(encodebuf, flags)
if r == 0 or r == ignore_error:
break
multibytecodec_encerror(space, encodebuf, r, errors,
errorcb, namecb, w_s)
while flags & MBENC_RESET:
r = pypy_cjk_enc_reset(encodebuf)
if r == 0:
break
multibytecodec_encerror(space, encodebuf, r, errors,
errorcb, namecb, w_s)
src = pypy_cjk_enc_outbuf(encodebuf)
length = pypy_cjk_enc_outlen(encodebuf)
return rffi.charpsize2str(src, length)
finally:
lltype.free(inbuf, flavor='raw')
def multibytecodec_encerror(space, encodebuf, e, errors,
errorcb, namecb, w_s):
if e > 0:
reason = "illegal multibyte sequence"
esize = e
elif e == MBERR_TOOFEW:
reason = "incomplete multibyte sequence"
esize = pypy_cjk_enc_inbuf_remaining(encodebuf)
elif e == MBERR_NOMEMORY:
raise MemoryError
else:
raise RuntimeError
#
# compute the string to use as a replacement -> 'replace', and
# the current position in the input 'unicodedata' -> 'end'
start = pypy_cjk_enc_inbuf_consumed(encodebuf)
end = start + esize
if errors == "strict":
raise EncodeDecodeError(start, end, reason)
elif errors == "ignore":
replace = ""
rettype = 'b' # != 'u'
elif errors == "replace":
replace = "?" # utf-8 unicode
rettype = 'u'
else:
assert errorcb
replace, end, rettype, _, _ = errorcb(errors, namecb, reason,
w_s, start, end)
if rettype == 'u':
codec = pypy_cjk_enc_getcodec(encodebuf)
lgt = rutf8.check_utf8(replace, False)
replace = encode(space, codec, replace, lgt, copystate=encodebuf)
#else:
# replace is meant to be a byte string already
with rffi.scoped_nonmovingbuffer(replace) as inbuf:
r = pypy_cjk_enc_replace_on_error(encodebuf, inbuf, len(replace), end)
if r == MBERR_NOMEMORY:
raise MemoryError
|
