Re: xerces translates entity characters(>...) automatically but I don't want to

[Alberto Massari]

Hi Nahid,
there is no standalone tutorial for XMLFormatter; but you can look at 
how DOMWriterImpl (in 2.8) and DOMLSSerializerImpl (in 3.0) use it to
understand its  features.
In short:
LocalFileFormatTarget fileTarget("c:\\tmp\\tmp.xml");
XMLFormatter formatter("utf-8", &fileTarget);
formatter  << XMLFormatter::NoEscapes << "<root attr=\"" << 
XMLFormatter::AttrEscapes << "value" << XMLFormatter::NoEscapes << "\">";
formatter.formatBuf("literal", 7, XMLFormatter::CharEscapes);
formatter  << XMLFormatter::NoEscapes << "</root>";

Alberto

Nahid wrote:
Thanks you Alberto.
Is it possible to give me any tutorial link for XMLFormatter?
-Nahid


Alberto Massari wrote:
  
Hi Nahid,
if you are directly writing the text to a final XML file, you can use an 
XMLFormatter object that takes care of the conversion in a more 
efficient manner (instead of scanning the input string 5 times and then 
reallocating it as you are doing now). Depending on the type of 
filtering you are doing, you could achieve better performances by using 
a grep-like tool, if what you are filtering is not XML-aware.

Alberto

Nahid wrote:
    
Hi Alberto,
Thanks for your reply. 
Actually my program is a filter so I'm just taking a XML to output
another
XML.
So it would better If I can output as it was. That is &.amp; instead of
&.

Right now I'm using this function to convert it again before make the
output.

string escape(string str) {
  string a[] = {"&", "<", ">", "\"", "'"};
  string b[] = {"&amp;",  "&lt;",  "&gt;",  "&quot;",  "&apos;"};
  for (int i=0; i<5; i++) {
    size_t pos=0;
    while ( ( pos = str.find(a[i], pos ) ) != std::string::npos ) {
      str.replace( pos, a[i].length(), b[i] );
      pos += b[i].length();
    }
  }
  return str;
}

But problem is as I told before I have to parse a huge file ( like 100 GB
to
1 TB ) so doing the conversion twice is costly (This function increase
10%
of running time :( )

So it would better if I can tell SAX2XMLReader not to convert &.amp; to &
,
which saves double conversion time.

Thanks you again
-Nahid


Alberto Massari wrote:
  
      
Hi Nahid,
an XML document cannot contain a & character, as it has a special 
meaning (beginning of an entity reference); why do you need to see the 
raw text instead of its meaning?

Alberto

Nahid wrote:
    
        
Hi,
Before posting, I've searched for the solution but can't find any. May
be
it
has a trivial solution.
I'm using SAX2XMLReader for parsing a huge XML file which contains
entity
characters(&gt, &lt etc...)
"<title>abc &amp; cde</title>" which is converted to "<title>abc &
cde</title>" 
I don't want this auto conversion. I just want the actual text.
Do you have any idea, how can I do it?
Thanks
Regards
-Nahid