<div dir="ltr"><br>I've done the following at the moment:<br><br>{$IFDEF SU_HAVE_SOCKADDR_SA_LEN}<br>// #define su_len su_sa.sa_len <- unsupported for now<br>{$ELSE}<br>// #define su_len su_array[0] <- unsupported for now<br>
{$ENDIF}<br>// #define su_family su_sa.sa_family <- unsupported for now<br>// #define su_port su_sin.sin_port <- unsupported for now<br>// #define su_scope_id su_array32[6] <- unsupported for now <br>
<br>su_sockaddr_u = record<br> case Byte of<br> 0 : (su_dummy : cshort); //< Dummy member to initialize<br> 1 : (su_array : array[0..31] of char); // Presented as chars<br>
2 : (su_array16 : array[0..15] of cuint16); // Presented as 16-bit ints<br> 3 : (su_array32 : array[0..8] of cuint32); // Presented as 32-bit ints<br> 4 : (su_sa : sockaddr); // Address in struct sockaddr format<br>
5 : (su_sin : sockaddr_in); // Address in IPv4 format<br>{$IFDEF SU_HAVE_IN6}<br> 6 : (su_sin6 : sockaddr_in6); // Address in IPv6 format<br>{$ENDIF}<br>
end;<br><br><br>As I understood by you and C developers that I talked to, the macro create a shortcut to be used.<br><br>Thanks,<br><br>Ido<br><br><div class="gmail_quote">On Sat, Apr 30, 2011 at 11:53, Ludo Brands <span dir="ltr"><<a href="mailto:ludo.brands@free.fr">ludo.brands@free.fr</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div>
<div><font size="2" color="#0000ff" face="Arial"><span>Using
macros, the translation looks like</span></font></div>
<div><font size="2" color="#0000ff" face="Arial"></font> </div>
<div><font face="Arial"><font color="#0000ff"><font size="2">{$MACRO ON}<br>{$ifndef
DOCUMENTATION_ONLY}<br>{$if SU_HAVE_SOCKADDR_SA_LEN <>0}<br>
{$define su_len:=su_sa.sa_len}<br>{$else}<br> {$define
su_len:=su_array[0]}<br>{$endif}<br>{$define
su_family:=su_sa.sa_family}<br>{$define su_port:=su_sin.sin_port}<br>{$define
su_scope_id:=su_array32[6]}<br>{$endif}<br><span>type</span></font></font></font></div>
<div><font face="Arial"><font color="#0000ff"><font size="2"><span> su_sockaddr_u =
record<br> case longint of<br>
{$ifdef
DOCUMENTATION_ONLY}<br> 0
: ( su_len : byte );<br> 1
: ( su_family : byte
);<br> 2 : ( su_port :
word );<br>
{$else}<br> 3 : ( su_dummy
: smallint );<br>
{$endif}<br> 4 : (
su_array : array[0..31] of char
);<br> 5 : ( su_array16 :
array[0..15] of word
);<br> 6 : ( su_array32 :
array[0..7] of longword
);<br> 7 : ( su_sa :
sockaddr );<br> 8 : (
su_sin : sockaddr_in
);<br> {$if SU_HAVE_IN6
<>0}<br> 9 : (
su_sin6 : sockaddr_in6
);<br>
{$endif}<br> {$ifdef
DOCUMENTATION_ONLY}<br> 10
: ( su_scope_id : longword
);<br>
{$endif}<br>
end;<br></span></font></font></font></div>
<blockquote dir="ltr" style="margin-right:0px">
<div></div>
<div dir="ltr" lang="fr" align="left"><font size="2" face="Tahoma"><div class="im">-----Message d'origine-----<br><b>De :</b>
<a href="mailto:fpc-pascal-bounces@lists.freepascal.org" target="_blank">fpc-pascal-bounces@lists.freepascal.org</a>
[mailto:<a href="mailto:fpc-pascal-bounces@lists.freepascal.org" target="_blank">fpc-pascal-bounces@lists.freepascal.org</a>] <b>De la part de</b> Ludo
Brands<br></div><b>Envoyé :</b> samedi 30 avril 2011 10:29<div class="im"><br><b>À :</b>
'FPC-Pascal users discussions'<br></div><b>Objet :</b> RE : RE : [fpc-pascal]
How to translate this union ?<br><br></font></div><div><div></div><div class="h5">
<div><span><font size="2" color="#0000ff" face="Arial">Forget my previous reply. I found the original header file on
sourceforge. </font></span></div>
<div><span><font size="2" color="#0000ff" face="Arial"></font></span> </div>
<div><span><font size="2" color="#0000ff" face="Arial">I
have alse a better understanding now of what the code is supposed to do: in
case DOCUMENTATION_ONLY is not defined, a reference to, for example,
su_sockaddr_u.su_family will be subsstituted by su_sockaddr_u.susa.sa_family.
</font></span></div>
<div><span><font size="2" color="#0000ff" face="Arial">You
could use macros and do a {$define su_family:=susa.sa_family} with the
following limitations:</font></span></div>
<div><span><font size="2" color="#0000ff" face="Arial">- if
you have variables or other record members named su_family, not part of the
su_sockaddr_u record, they will be renamed also. </font></span></div>
<div><span><font size="2" color="#0000ff" face="Arial">- it
works only for the units that include your .inc file.</font></span></div>
<div><span></span> </div>
<blockquote dir="ltr" style="margin-right:0px">
<div></div>
<div dir="ltr" lang="fr" align="left"><font size="2" face="Tahoma">-----Message d'origine-----<br><b>De :</b>
<a href="mailto:fpc-pascal-bounces@lists.freepascal.org" target="_blank">fpc-pascal-bounces@lists.freepascal.org</a>
[mailto:<a href="mailto:fpc-pascal-bounces@lists.freepascal.org" target="_blank">fpc-pascal-bounces@lists.freepascal.org</a>] <b>De la part de</b> Ludo
Brands<br><b>Envoyé :</b> samedi 30 avril 2011 09:18<br><b>À :</b>
'FPC-Pascal users discussions'<br><b>Objet :</b> RE : [fpc-pascal] How
to translate this union ?<br><br></font></div>
<div><span><font size="2" color="#0000ff" face="Arial">Can you post the original c code? You point to a file that seems to
be a reworked output from h2pas. As it is now, it indeed doesn't make any
sense. I would think the su_len,su_family,su_port should make up a record
but they aren't.</font></span></div>
<div><span><font size="2" color="#0000ff" face="Arial"></font></span> </div>
<div><span><font size="2" color="#0000ff" face="Arial">I
suggest you move the #defines inside the union declaration to somewhere
before the union declaration. It'll double up the ifdef's but make the code
so much more readable.</font></span></div>
<div><span><font size="2" color="#0000ff" face="Arial"></font></span> </div>
<div><span><font size="2" color="#0000ff" face="Arial"></font></span> </div>
<div></div>
<div><font size="2" face="Tahoma">-----Message
d'origine-----<br><b>De :</b> <a href="mailto:fpc-pascal-bounces@lists.freepascal.org" target="_blank">fpc-pascal-bounces@lists.freepascal.org</a>
[mailto:<a href="mailto:fpc-pascal-bounces@lists.freepascal.org" target="_blank">fpc-pascal-bounces@lists.freepascal.org</a>] <b>De la part de</b>
ik<br><b>Envoyé :</b> vendredi 29 avril 2011 22:15<br><b>À :</b>
FPC-Pascal users discussions<br><b>Objet :</b> [fpc-pascal] How to
translate this union ?<br><br></font></div>
<blockquote dir="ltr" style="margin-right:0px">
<div dir="ltr">Hello list,<br><br>I'm trying to translate the <a href="https://github.com/ik5/sofia-sip/blob/master/src/lib/sui.inc#L199" target="_blank">following
union</a> to Pascal, but I do not understand it, and so does h2pas.<br>How
to translate it ?<br><br>Thanks,<br><br>Ido<br><br><br clear="all">
<div dir="ltr">LINESIP - Opening the source for communication<br><a href="http://www.linesip.com" target="_blank">http://www.linesip.com</a><br><a href="http://www.linesip.co.il" target="_blank">http://www.linesip.co.il</a><br>
<br></div><br></div></blockquote></blockquote></div></div></blockquote></div>
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