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 Readme for:  Utility » Text » Misc » arexxxml.lha

Arexxxml

Description: Parse XML in ARexx
Download: arexxxml.lha       (TIPS: Use the right click menu if your browser takes you back here all the time)
Size: 205kb
Version: 1.1
Date: 06 Dec 2009
Author: Joakim Nordström
Submitter: Joakim Nordström
Email: joakim nordstrom/gmail com
Requirements: expat.library uni.library (http-handler, optional)
Category: utility/text/misc
Replaces: utility/text/arexxxml.lha
License: Other
Distribute: yes
Min OS Version: 4.0
FileID: 5191
 
Comments: 2
Snapshots: 0
Videos: 0
Downloads: 160  (Current version)
198  (Accumulated)
Votes: 0 (0/0)  (30 days/7 days)

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ARexxXml
--------
Version:        1.1
Author:         Joakim Nordström
Date:           2009-12-03
Requirements:   OS4, expat.library, uni.library, [http-handler]

What is it?
-----------
ARexxXml is an ARexx interface for reading XML files.

How does it work?
-----------------
When started, ARexxXml creates an ARexx-port, AREXXXML.

Assume a XML-file like below:
    <test>
        <mojo temp="foo">Pop<mojo/>
        <mojo temp="bar">Funk<mojo/>
    </test>

Now, with one simple ARexx-command:

GETTAG "test.mojo(temp)"

we would get the value "foo" which is the attribute "temp"
of element "mojo".

Instructions:
-------------
ArexxXml takes one optional argument:
NEWPORT/S               Should the ARexx-port create a new
    ARexx-port, like AREXXXML.1, AREXXXML.2 etc, or should
    AREXXXML always (tried to) be opened. The default is
    to always use AREXXXML.


The ARexx-port support these commands:
LOADXML	FILE/F			
    Loads an XML-file into memory. Relative to ARexxXml home-drawer.
GETTAG TAG/F			
    Tries to retrieve a tag-structure from the XML-file.
    Each element is one string, child elements are preceded by
    a point. The content of <info> in test.xml would be returned
    with the command tag-string "test.info".
    Attributes are given in parentheses. the "temp" attribute of
    tag <mojo> would be "test.mojo(temp)"
    Multiple tags can be iterated with a []-notation and an index,
    starting at 0. The <mojo>-tag with content "FUNK" could be
    reached with "test.mojo[1]", and its temp-attribute with
    "test.mojo[1](temp)".
    The number of multiple tags can be returned with the special
    "length"-index. "test.mojo[length]" would in this case return 2.
    If an element can't be found, the result code 5 is returned.

CLOSE					
    Closes the XML file and removes it from memory.
	After a CLOSE, only the file and its resources are freed, the
    ARexx-port and program are still in memory.
QUIT					
    Quits ArexxXml and removes the ARexx-port.
	This quits and removes the entire ARexx-port and program.

Each command can return these codes:
    Code Error
    5  	Element not found
    10	You forgot to supply tag in GETTAG-command
    16 	The XMl isnt valid
    17  No file was loaded when trying to call "GETTAG"
    18 	File couldn't be found
    19 	File couldn't be read
    20 	Couldn't allocate memory


Examples:
---------

A few examples are provided in the ExampleScripts drawer:
GMail.rexx
    Gets the first 20 email in your gmail inbox, using the
    GMail ATOM feed.
    This script requires http.handler from os4depot.net
    (network/misc/httphandler.lha) by Chris Young.

ViewASX.rexx
    Reads asx-files and starta mplayer for viewing.
    Requires MPlayer.

GetYouTube.rexx
    Retrieves titles from YouTube.
    Also requires http-handler. (See GMail.rexx)

GetApps.rexx
    Lists all programs you have started.

Installation:
-------------
Copy ARexxXML to path.

Requirments:
------------
Make sure you have expat.library in Libs
(http://os4depot.net/share/development/library/misc/expat.lha).

For UTF-8 decoding, you must have uni.library installed
(http://os4depot.net/share/library/unilibdev.lha).

To handle URLs you need HTTP-handler (really not needed
by ARexxXML, but nice to use in scripts)
(http://os4depot.net/share/library/unilibdev.lha).

Release notes:
--------------
v 1.1 2009-12-03

* Added support for Unicode
* Fixed so files larger than 8k can be read (doh!)
* URL-support can be achieved by using HTTP-handler
  (see examples)
* Added NEWPORT argument.

v 1.0 2009-11-11

* Initial release

Todo:
-----

* Make it possible to traverse the XML-file tag by tag in ARexx

Bugs:
-----

Files have to be fully resolved, ie, DH1:Temp/test.xml, or relative
to the actual ArexxXml-binaries startpath.






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