expatmm

ExpatMM XML Parser class for C++ based upon Expat (http://www.libexpat.org)

• Author: Coleman Kane ckane@colemankane.org
• Website: http://github.com/ckane/expatmm

#Building You will need the libexpat headers installed, as well as autoconf, automake, libtool, etc.

Run the autogen script:

./autogen.sh

Then, you should be able to run configure (see --help for extra options):

./configure --prefix=/usr/local

Then, make & install:

make
sudo make install

Usage

ExpatMM implements an XML parser as a class, providing virtual methods for the various events that can occur while parsing. For more information on event-driven XML parsing, please refer to the libexpat manual, documentation, and source code. The author using the parser in their program should derive a subclass from ExpatXMLParser or ExpatXMLFileParser (the later being a simple implementation for a quick XML file parser) and implement the methods for the XML fields that will be interpreted by your parser or compiler. To use ExpatMM in your software, you will need to #include <expatmm/expatmm.h> as well as the system headers (before it) that are needed for size_t, std::string, FILE* I/O, and expat itself. All code and data are in the expatmm namespace.

Commonly, the following headers are necessary: sys/types.h, string, stdio.h, expat.h

For example, a simple parser of a file might look like this (MyFileParser.h):

#include <sys/types.h>
#include <stdio.h>
#include <string>
#include <expat.h>
#include <expatmm/expatmm.h>

using namespace expatmm;

class MyFileParser : public ExpatXMLFileParser {
  public:
    MyFileParser(std::string filename) : ExpatXMLFileParser(filename) { };
  protected:
    virtual void StartElement(const XML_Char *name, const XML_Char **attrs) {
      printf("Entering %s\n", name);
    };
    virtual void EndElement(const XML_Char *name) {
      printf("Leaving %s\n", name);
    };
};

This parser would recognize entering and exiting named sections of the chosen input file, and would print out a series of messages indicating when it entered and left an XML block (delimited by XML tags).