Re: about xmlReadMemory()

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Hi Nick,
I've experimented with xmlReadIO and it's cool.
this message just to check I'm doing right:
-I register an xmlInputReadCallback of type: size_t myCallback(void*
context, char* buffer, int length)
-I do my stuff in the callback and if data I use exceed the length of the
buffer, I realloc it.
Is this schema good?
Do I need to set size_t as the return type of myCallback?

thank you for your enlightenment .
best regards,
nicolas


Le mar. 2 mars 2021 =C3=A0 19:32, nicolas bats <[email protected]> a =C3=
=A9crit :

> Thank you Nick for your answer, I'll give a try to xmlReadIO.
> thanks again.
> ++
>
> Le mar. 2 mars 2021 =C3=A0 18:02, Nick Wellnhofer <[email protected]> a
> =C3=A9crit :
>
>> On 02/03/2021 16:28, nicolas bats via xml wrote:
>> > Hi,
>> > is there's a reason why xmlReadMemory
>> > <http://xmlsoft.org/html/libxml-parser.html#xmlReadMemory>() accepts
>> int as
>> > the size of the array to transform to xmlDocPtr.
>> > no doubt there's one...
>>
>> That's simply a design mistake. The API was created 20 years ago when
>> 64-bit
>> systems were rare.
>>
>> > and in that case how could I retrieve a xmlDocPtr from
>> > memory where size is type of size_t?
>>
>> If you want to process memory buffers larger than INT_MAX, you can use
>> xmlReadIO with a custom read callback that uses a size_t to store the
>> offset.
>>
>> Nick
>>
>

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<div dir=3D"ltr">Hi Nick,<div>I&#39;ve experimented with=C2=A0<span style=
=3D"color:rgb(0,0,0)">xmlReadIO and it&#39;s cool.</span></div><div><font c=
olor=3D"#000000">this message just to check I&#39;m doing right:</font></di=
v><div><font color=3D"#000000">-I register an xmlInputReadCallback of type:=
 size_t myCallback(void* context, char* buffer, int length)</font></div><di=
v><font color=3D"#000000">-I do my stuff in the callback and if data I use =
exceed the length of the buffer, I realloc it.</font></div><div><font color=
=3D"#000000">Is this schema good?</font></div><div><font color=3D"#000000">=
Do I need to set size_t as the return type of myCallback?</font></div><div>=
<font color=3D"#000000"><br></font></div><div><font color=3D"#000000">thank=
 you for your enlightenment=C2=A0.</font></div><div><font color=3D"#000000"=
>best regards,</font></div><div><font color=3D"#000000">nicolas</font></div=
><div><font color=3D"#000000"><br></font></div></div><br><div class=3D"gmai=
l_quote"><div dir=3D"ltr" class=3D"gmail_attr">Le=C2=A0mar. 2 mars 2021 =C3=
=A0=C2=A019:32, nicolas bats &lt;<a href=3D"mailto:[email protected]" tar=
get=3D"_blank">[email protected]</a>&gt; a =C3=A9crit=C2=A0:<br></div><bl=
ockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-lef=
t:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr">Thank=C2=A0=
you Nick for your answer, I&#39;ll give a try to=C2=A0<span style=3D"color:=
rgb(0,0,0)">xmlReadIO.</span><div><span style=3D"color:rgb(0,0,0)">thanks a=
gain.</span></div><div><span style=3D"color:rgb(0,0,0)"><a class=3D"gmail_p=
lusreply" id=3D"gmail-m_-8406994502122364322gmail-m_2581323396883386094plus=
ReplyChip-1">++</a><br></span></div></div><br><div class=3D"gmail_quote"><d=
iv dir=3D"ltr" class=3D"gmail_attr">Le=C2=A0mar. 2 mars 2021 =C3=A0=C2=A018=
:02, Nick Wellnhofer &lt;<a href=3D"mailto:[email protected]" target=3D"_=
blank">[email protected]</a>&gt; a =C3=A9crit=C2=A0:<br></div><blockquote=
 class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px so=
lid rgb(204,204,204);padding-left:1ex">On 02/03/2021 16:28, nicolas bats vi=
a xml wrote:<br>
&gt; Hi,<br>
&gt; is there&#39;s a reason why xmlReadMemory <br>
&gt; &lt;<a href=3D"http://xmlsoft.org/html/libxml-parser.html#xmlReadMemor=
y" rel=3D"noreferrer" target=3D"_blank">http://xmlsoft.org/html/libxml-pars=
er.html#xmlReadMemory</a>&gt;() accepts int as <br>
&gt; the size of the array to transform to xmlDocPtr.<br>
&gt; no doubt there&#39;s one...<br>
<br>
That&#39;s simply a design mistake. The API was created 20 years ago when 6=
4-bit <br>
systems were rare.<br>
<br>
&gt; and in that case how could I retrieve a xmlDocPtr from <br>
&gt; memory where size is type of size_t?<br>
<br>
If you want to process memory buffers larger than INT_MAX, you can use <br>
xmlReadIO with a custom read callback that uses a size_t to store the offse=
t.<br>
<br>
Nick<br>
</blockquote></div>
</blockquote></div>

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