Re: Defining a constant XMLCh*

[Alberto Massari]

Hi Rafael,
you must understand that XMLCh are made of UTF-16 character (i.e. 
Unicode), while what you want to use is plain ASCII, so you need to 
perform the conversion from ASCII to Unicode.

You have three choices:
1) if your compiler supports Unicode characters in the source code 
(usually by the L modifier) you can write

  static const XMLCh gFileToTrap[] = L"personal.dtd";

2) if your compiler doesn't support Unicode character, you have to 
write the array character by character, either using

  static const XMLCh  gFileToTrap[] =
  {
        chLatin_p, chLatin_e, chLatin_r, chLatin_s, chLatin_o, chLatin_n
    ,   chLatin_a, chLatin_l, chPeriod,  chLatin_d, chLatin_t, chLatin_d,
    ,   chNull
  };

or

  static const XMLCh  gFileToTrap[] =
  {
        'p', 'e', 'r', 's', 'o', 'n', 'a', 'l', '.', 'd', 't', 'd', 0
  };

3) if you don't option 2, you have to do the conversion at runtime 
using a transcoder, like in

  const XMLCh* gFileToTrap=XMLString::transcode("personal.dtd");

Don't forget to delete the string by using 
XMLString::release(&gFileToTrap); also, you must allocate it after 
XMLPlatformUtils::initialize and deallocate it before 
XMLPlatformUtils::terminate.

Hope this helps,
Alberto

At 16.58 18/11/2005 +0000, Rafael Sousa (Ext_Altior) wrote:
Hi all!

I'm having trouble working with XMLCh strings...

For example, in the Redirect sample a constant XMLCh string is defined
this way:

static const XMLCh  gFileToTrap[] =
{
        chLatin_p, chLatin_e, chLatin_r, chLatin_s, chLatin_o, chLatin_n
    ,   chLatin_a, chLatin_l, chPeriod,  chLatin_d, chLatin_t,
chLatin_d, chNull
};

But is this the only way? Can't I create one directly from a string of
caracters, like:

static const XMLCh gFileToTrap[] = "personal.dtd";

What would be really nice was to be able to create a XMLCh* from a
char*... Can this be done easily?

Thanks!

Rafael Sousa