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The incremental decoder for utf-7 must preserve its state between calls.

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Solves issue1460.

Might not be a backport candidate: a new API function was added,
and some code may rely on details in utf-7.py.
This commit is contained in:
Amaury Forgeot d'Arc 2007-11-20 23:31:27 +00:00
parent 8c4592a77a
commit 5087980c1e
5 changed files with 61 additions and 23 deletions
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21
Objects/unicodeobject.c
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@ -943,6 +943,14 @@ char utf7_special[128] = {
PyObject *PyUnicode_DecodeUTF7(const char *s,
Py_ssize_t size,
const char *errors)
{
return PyUnicode_DecodeUTF7Stateful(s, size, errors, NULL);
}
PyObject *PyUnicode_DecodeUTF7Stateful(const char *s,
Py_ssize_t size,
const char *errors,
Py_ssize_t *consumed)
{
const char *starts = s;
Py_ssize_t startinpos;
@ -962,8 +970,11 @@ PyObject *PyUnicode_DecodeUTF7(const char *s,
unicode = _PyUnicode_New(size);
if (!unicode)
return NULL;
if (size == 0)
if (size == 0) {
if (consumed)
*consumed = 0;
return (PyObject *)unicode;
}
p = unicode->str;
e = s + size;
@ -1049,7 +1060,7 @@ PyObject *PyUnicode_DecodeUTF7(const char *s,
goto onError;
}
if (inShift) {
if (inShift && !consumed) {
outpos = p-PyUnicode_AS_UNICODE(unicode);
endinpos = size;
if (unicode_decode_call_errorhandler(
@ -1061,6 +1072,12 @@ PyObject *PyUnicode_DecodeUTF7(const char *s,
if (s < e)
goto restart;
}
if (consumed) {
if(inShift)
*consumed = startinpos;
else
*consumed = s-starts;
}
if (_PyUnicode_Resize(&unicode, p - PyUnicode_AS_UNICODE(unicode)) < 0)
goto onError;