Re: Getting Text data as C string

[Denis Gasparin <denis@xxxxxxxxxxx>]

Peter Eisentraut ha scritto:

Am Montag, 12. März 2007 12:47 schrieb Denis Gasparin:
  

I wrote a simple c stored procedure that accepts only one text parameter
that i want to convert to a c string.
The problem is that i obtain the C string correctly but with spurious
characters at the end... I use these calls to obtain the c string:
    

The data in a text datum is not null terminated.  You need to call the 
function textout() to convert.  Grep the source code for examples of invoking 
it.

  

I found these defines into the contrib section:

#define GET_STR(textp) DatumGetCString(DirectFunctionCall1(textout, PointerGetDatum(textp)))
#define GET_TEXT(cstrp) DatumGetTextP(DirectFunctionCall1(textin, CStringGetDatum(cstrp)))

So i can safely use them to obtain a string pointer from a text pointer and viceversa.

I tried and all seemed to work ok.
Thank you,
Denis