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Hi Jonathan - I looked at both libxml2 and xerces-C before emailing. From the documentation it appears that with both of them, I have to get a XML document from the XML file, walk the tree, update the node and then dump the xml document to another file. ls there a way to update a node in a existing XML file without creating a new file. Something like XUpdate with C++. Regards, --Ashish > Date: Fri, 18 Apr 2008 11:24:49 -0400 > From: jonathan.robie@redhat.com > To: ashish_lal@hotmail.com > CC: xml-dev@lists.xml.org > Subject: Re: [xml-dev] Help with updating XML files > > There are many ways to do this, but if you are on Linux you probably > have libxml already installed, so you might want to take a look at the > libxml tutorial: > > http://xmlsoft.org/tutorial/index.html > > Alternatively, you could use the xerces-c library. > > Jonathan > > Ashish Lal wrote: > > I have about 4 to 5 xml small sized xml files (each with say 20 > > element nodes). I need an way to update the nodes in the XML files > > from a C++ program. The C++ program would call a function with the > > right parameters and the right node would be updated (see example > > below). I am using this in a linux based embedded application and > > would like to avoid installing an XML database. > > > > Example: See the XML file below - > > ...................... > > <Sensors> > > <Temperature> 70 </Temperature> > > <Pressure> 200 </Pressure> > > <Humidity> 20 </Humidity> > > </Sensors> > > ........................... > > > > How can I update the value of (say) Temperature from 70 to 90 in the > > XML file from a C++ program? > > > > Any help or pointers would be deeply appreciated. > > > > Regards, > > --Ashish > |