Help with XML-Ruby parsers

[sayonara-p]

I've a script in mind that will need to read XML files. I was looking for a XML-Ruby parser. I found these:
REXML (the most used but a 'bit'... sloooow)
LibXML (the fastest one, and my favourite)
Chillkat Libraries (I don't like much these ones)

The problem: I just don't know how to use any of them. Can anyone help me (with LibXML if possible)?


regards

 

[IvIagnuIvI]

http://libxml.rubyforge.org/
Go to API Docs. There are basic examples of reading and writing...

I found it in less than a minute looking for it in google with this keywords
"libxml ruby"

..........

Later

 

[sayonara-p]

You misunderstood me...

What I said:

I've a script in mind that will need to read XML files. I was looking for a XML-Ruby parser. I found these:
REXML (the most used but a 'bit'... sloooow)
LibXML (the fastest one, and my favourite)
Chillkat Libraries (I don't like much these ones)

The problem: I just don't know how to use any of them. Can anyone help me (with LibXML if possible)?

..........

I've used google for a minute too (so that I said 'I found these'). In fact, I've got it into my project directory.
What I meant is that I just don't know how to import the LibXML library in order to use it in RGSS.
Importing (copy&paste) the LibXML .rb files directly into the RGSS editor throws a lot of errors, like if I've got not all the necessary files or something...
I tried to use 'require' statements too, but it's like RGSS couldn't find these .rb files and it throws an 'no such file' exception.

So I don't know what am I doing wrong. Maybe must I c&p the .rb files in an specific order or the like? I've tried yesterday for a couple of hours but... nothing.


regards

 

[Cowlol]

Here's how I did it (thanks to this Japanese blog post):

1. Download REXML. The latest version doesn't seem to work with RMXP (probably because it uses features of a newer version of Ruby), so try version 3.1.6 or any earlier version, I can confirm it working with versions 3.1.6 and 3.1.2.

2. Inside the zip file, there's a folder src, and inside it is another folder rexml. You need to extract this rexml folder (src/rexml/) into your game folder (where Game.exe) is. You could optionally put it in another folder (inside Data/ or Data/Scripts/ for example) for better organization, but you'd need to add the path when specifying directory in step 3 or 4.

3. Add this somewhere before you want to use REXML, it adds the current directory ('.') to the list of paths RGSS looks for required scripts in:

$: << File.expand_path ('.')

I put it in the Main section as soon as the game starts, but it's up to you.

4. Now you could use REXML by requiring rexml/document, like this:

require 'rexml/document'

Refer to REXML tutorial for information on using REXML. If you need help with that, feel free to ask. I use XML to define poses for my battle and event pose system.

Using any other XML library (or rb file in general) should be similar. I stuck with REXML because it's fast enough for my needs.

 

[sayonara-p]

Really thank, Cowlol, that's what I was looking for
The step I didn't know before reading your post was:

3. Add this somewhere before you want to use REXML, it adds the current directory ('.') to the list of paths RGSS looks for required scripts in:
Code:

$: << File.expand_path ('.')

I put it in the Main section as soon as the game starts, but it's up to you.

I hope this work for LibXML too. Or is REXML not as slow as someone told me?


regards

 

[Cowlol]

I heard it's slow too, compared to some other libraries and languages. I guess it depends on what you need, my XML files are all small and simple, and I only have to read them once per map/battle, so it works for me. The best way to know for sure is test it yourself, after all.

 

[IvIagnuIvI]

You misunderstood me...

What I said:

I've a script in mind that will need to read XML files. I was looking for a XML-Ruby parser. I found these:
REXML (the most used but a 'bit'... sloooow)
LibXML (the fastest one, and my favourite)
Chillkat Libraries (I don't like much these ones)

The problem: I just don't know how to use any of them. Can anyone help me (with LibXML if possible)?

..........

I've used google for a minute too (so that I said 'I found these'). In fact, I've got it into my project directory.
What I meant is that I just don't know how to import the LibXML library in order to use it in RGSS.
Importing (copy&paste) the LibXML .rb files directly into the RGSS editor throws a lot of errors, like if I've got not all the necessary files or something...
I tried to use 'require' statements too, but it's like RGSS couldn't find these .rb files and it throws an 'no such file' exception.

So I don't know what am I doing wrong. Maybe must I c&p the .rb files in an specific order or the like? I've tried yesterday for a couple of hours but... nothing.


regards

I'm sorry then. But you can't say I misunderstood you... "How to use" is very vague. I'd say you didn't explain yourself good enough.
I guess my 1st post didn't sound too polite, so sorry for that XD.

And btw, if you look at the link I gave you there are comparisons of speed between LibXML and REXML, and LibXML humillated REXML.

Later!

 

[Cowlol]

Well, it makes sense, considering REXML is written in Ruby and Ruby libxml is a ruby binding of a C library.

With that said getting libxml to work on Windows might prove to be tricky (google "windows ruby libxml") and might require more steps than I outlined because libxml depends on some external libraries while REXML doesn't. If you do manage to get it working, it'd be cool if you share how you did it.