RE: Do I need XML parser ?

To: "'Saha Rabindra N'" <saha.rn@m...>,<xml-dev@l...>
Subject: RE: Do I need XML parser ?
From: "Michael Kay" <mike@s...>
Date: Fri, 4 Mar 2005 18:04:19 -0000
In-reply-to: <20050303194937.20735.qmail@m...>
Thread-index: AcUgJnLyjL2/DTLtSduNrybgDPiJrwAABkjwAC87K+A=

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Title: Do I need XML parser ?

In many cases it's easy enough to generate XML just by writing it out directly as a print file. You can do this in any programming language. The only things you need to be a little careful about are:

(a) the character encoding of the text file that you write must be correctly described in the XML declaration at the head of the file

(b) special characters such as <, >, and & (and quotes in attribute values) need to be escaped using sequences such as <

(c) some control characters are not permitted, and others such as newline may need to be escaped if you need to preserve them as-is.

If you're starting with a COBOL file on a mainframe this is probably the simplest approach. With an XML-aware language such as Java you have rather more choices; my own preference is usually to write "events" such as startElement, endElement etc to a SAX serializer.

An XML parser is needed only by an application that reads XML, not one that writes XML.

Michael Kay

http://www.saxonica.com/

From: Saha Rabindra N [mailto:saha.rn@m...]
Sent: 03 March 2005 19:50
To: xml-dev@l...
Subject: Do I need XML parser ?
Importance: High

Hello,
As I am new to this XML business so I got a basic and simple question.
Here it goes...
I have one cobol data file (in ASCII format) and one cobol record description file to describe the position/length of each field of data file.

I want to generate one XML file out of that cobol data file. My question is
1) Do I need any XML parser to just generate one XML file from a data file ? Or a simple programming logic can create the XML file ?

2) While environment/programming language would be best in this scenario ?
        a) program written in cobol on Mainframe ?
        b) to transfer the datafile to a Unix m/c and the generate the XML file in C language ?
        c) to transfer the datafile to a Unix m/c and the generate the XML file using shell script ?

Any quick help would be highly appreciated !

Thanks in advance,

Regards
Rabindra Nath Saha

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References:
- Do I need XML parser ?
  - From: "Saha Rabindra N" <saha.rn@m...>

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