xmlmodifyfile.C File Reference

Detailed Description

Example to read, modify and store xml file, using TXMLEngine class The input file, produced by xmlnewfile.C macro is used If you need full xml syntax support, use TXMLParser instead

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Processing /mnt/build/workspace/root-makedoc-v614/rootspi/rdoc/src/v6-14-00-patches/tutorials/xml/xmlmodifyfile.C...

#include "TXMLEngine.h"

// scan node and returns number of childs
// for each child create info node with name and number of childs
int ScanNode(TXMLEngine &xml, XMLNodePointer_t node)
{
   int cnt = 0;
   XMLNodePointer_t child = xml.GetChild(node);
   while (child) {
      cnt++;

      int numsub = ScanNode(xml, child);

      // create new <info> node
      XMLNodePointer_t info = xml.NewChild(node, xml.GetNS(child), "info");

      // set name and num attributes of info node
      xml.NewAttr(info, 0, "name", xml.GetNodeName(child));
      if (numsub > 0) xml.NewIntAttr(info, "num", numsub);

      // move it after current node
      xml.AddChildAfter(node, info, child);

      // set pointer to new node
      child = info;

      xml.ShiftToNext(child);
   }
   return cnt;
}

void xmlmodifyfile(const char* filename = "example.xml")
{
   // First create engine
   TXMLEngine xml;

   // Now try to parse xml file
   XMLDocPointer_t xmldoc = xml.ParseFile(filename);
   if (xmldoc) {
      // recursively scan all nodes, insert new when required
      ScanNode(xml, xml.DocGetRootElement(xmldoc));

      // Save document to file
      xml.SaveDoc(xmldoc, "modify.xml");

      // Release memory before exit
      xml.FreeDoc(xmldoc);
   }
}

Author

Sergey Linev

Definition in file xmlmodifyfile.C.