ILE RPG ReplaceXmlEntities()
Use this subprocedure when you need to escape common XML entities & (ampersand), < (less than), > (greater than), ‘ (single quote), and ” (double quote). Several web reports I generate using CGIDEV2 are in HTML or XML form, and those special XML characters must be escaped.
// Variables for XML entity replacement.
d xmlentities s 1a dim(5) ctdata
d xmlreplacement s 4a dim(5) alt(xmlentities)
// Prototype.
d ReplaceXmlEntities...
d pr 400a varying
d invalue 200a options(*varsize) const
// Subprocedure.
p ReplaceXmlEntities...
p b
d ReplaceXmlEntities...
d pi 400a varying
d invalue 200a options(*varsize) const
d lastpos s 10i 0 inz
d start s 10i 0 inz
d workvalue s 400a inz varying
d z s 10i 0 inz
/free
// See the XMLEntities CTDATA array for list.
// Ampersand (&) should be first because that is what all the
// other replacements use.
workvalue = invalue;
for z = 1 to %elem(xmlentities);
lastpos = 0;
start = 1;
lastpos = %scan(xmlentities(z):invalue:start);
dow lastpos > 0;
workvalue = %replace('&'+%trim(xmlreplacement(z))+';' :
workvalue:lastpos:1); // ":1" overwrites the existing "bad" char
start = lastpos+1;
lastpos = %scan(xmlentities(z):invalue:start);
enddo;
endfor;
return workvalue;
/end-free
p ReplaceXmlEntities...
p e
// Compile-time data.
// This could also be stored in a D-spec array.
**CTDATA xmlentities
&
gt
'apos
"quot
Feel free to change the size of the invalue, workvalue, and return sizes. I use the procedure over single fields of data which are not very large.