En Wed, 17 Dec 2008 22:51:03 -0200, Aaron Brady <castiro...@gmail.com>
escribió:
On Dec 17, 6:42 pm, "Gabriel Genellina" <gagsl-...@yahoo.com.ar>
wrote:
En Wed, 17 Dec 2008 21:35:04 -0200, Floris Bruynooghe
<floris.bruynoo...@gmail.com> escribió:
> But how can python now know how long to keep that buffer object in
> memory for?
It doesn't - *you* have to ensure that the original string object isn't
destroyed (by example, incrementing its reference count as long as you
keep the pointer), or copy the string contents into your own buffer.
I missed something. How did you get a reference to the original
string object, with which to increment its reference count?
From the original arguments to the function -- the first argument you pass
to PyArg_ParseTuple &co.
How do
you know its length to copy it into your own buffer?
Use the "s#" format instead, which returns both a pointer to the string
contents and its length. Even if you're not going to copy the buffer, it's
required in case the string could contain any NUL byte.
--
Gabriel Genellina
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