New submission from STINNER Victor: I would like to deprecate PyUnicode_AsUnicode(), see the issue #22271 for the rationale (hint: memory footprint). The first step is to rewrite PyUnicode_AsWideChar() and PyUnicode_AsWideCharString() to not call PyUnicode_AsUnicode() anymore.
Attached patch implements this. The code is based on PyUnicode_AsUnicode(), but it's more tricky because PyUnicode_AsWideChar() can truncate the string, and PyUnicode_AsUnicode() does no copy characters if kind == sizeof(wchar_t), PyASCIIObject.wstr "just" points to data. I hate PyUnicode_AsWideChar(), but we must keep it for backward compatibility :-) It would be possible to write an optimized PyUnicode_AsWideCharString() which computes the length, allocate memory and write wide characters, but I don't want to have 3 functions converting a Python string to a wide character string. There are already PyUnicode_AsUnicodeAndSize() and unicode_aswidechar() (+ unicode_aswidechar_len()). ---------- messages: 226244 nosy: haypo, loewis priority: normal severity: normal status: open title: Rewrite PyUnicode_AsWideChar() and PyUnicode_AsWideCharString() type: enhancement versions: Python 3.5 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue22323> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
