Re: [boost] Property tree rev.5

From: Jeff Garland (jeff_at_[hidden])
Date: 2006-04-18 11:50:32

On Tue, 11 Apr 2006 00:04:06 +0100, Marcin Kalicinski wrote
> Property tree library revision 5 (review version) is now in the 
> boost vault. Documentation can be viewed online at
http://kaalus.atspace.com/ptree

I took a quick look this morning -- it's very slick.  The interface is clean
and obvious -- I especially like the get_optional.  The focus on supporting
multiple external formats while maintaining a common internal interface is a
very smart design decision.  

I'll definately be using this class :-)

A couple things I discovered:

 - Couldn't get find to work
 - Docs Need an example of using the iterators (no example either)
 - If you read an ini file with comments and then write it back they are lost
 - Indenting and other attributes of the ini file are also lost.

Only serious thing is I can't seem to get 'find' to work.   

    ptree pt;
    read_ini("test.ini", pt);
    ptree::const_iterator ci = pt.find("value2");
    if (ci != pt.end()) {
      std::cout << ci->second.data() << std::endl;
    }

   //test.ini
  [User Data]   ; This is a comment
  value1 = v1
  value2 = v2
  date = 2006-Apr-18

I tried various keys in the find -- all returned null iterator.

One really interesting extension for this would be a combination with
Boost.Filesystem for reading file properties.  You could use filesystem to
populate the tree and then you'd have a really handy data structure for
accessing file properties.

Jeff