How to convert an XML document to PYX format (with examples)

This article will guide you on how to use the xml pyx command to convert an XML document to PYX (ESIS - ISO 8879) format. The xml pyx command is a part of the XMLStarlet package, which is a set of command-line utilities for working with XML files.

Use case 1: Convert an XML document to PYX format

Code:

xml pyx path/to/input.xml|URI > path/to/output.pyx

Motivation: This example demonstrates how to convert an XML document located at a specific path or URL to the PYX format. The PYX format allows you to represent the XML document in a more compact and human-readable form.

Explanation:

• xml pyx: Invokes the xml pyx command.
• path/to/input.xml|URI: Specifies the path or URL to the input XML document. Replace path/to/input.xml|URI with the actual path or URL.
• >: Redirects the output of the xml pyx command to a file.
• path/to/output.pyx: Specifies the path to the output PYX file. Replace path/to/output.pyx with the desired file path.

Example output:

<?NS "<root>": ?> <?NS "</root>": ?>
<root>
<?NS "<child>": ?>
  <child>This is a child element.</child>
<?NS "</child>": ?>
</root>

Use case 2: Convert an XML document from stdin to PYX format

Code:

cat path/to/input.xml | xml pyx > path/to/output.pyx

Motivation: This example demonstrates how to convert an XML document from stdin (standard input) to the PYX format. This can be useful when you have XML data piped from another command or when you want to process XML data interactively.

Explanation:

• cat path/to/input.xml: Reads the contents of the XML document located at the specified path.
• |: Pipes the output of the cat command to the xml pyx command.
• xml pyx: Invokes the xml pyx command.
• >: Redirects the output of the xml pyx command to a file.
• path/to/output.pyx: Specifies the path to the output PYX file. Replace path/to/output.pyx with the desired file path.

Example output:

<?NS "<root>": ?> <?NS "</root>": ?>
<root>
<?NS "<child>": ?>
  <child>This is a child element.</child>
<?NS "</child>": ?>
</root>

Use case 3: Display help for the pyx subcommand

Code:

xml pyx --help

Motivation: This example demonstrates how to display the help information for the pyx subcommand. The help information provides a description of the command and its available options, which can be helpful when you need to understand the usage of the command or explore additional functionality.

Explanation:

• xml pyx: Invokes the xml pyx command.
• --help: Specifies the --help option to display the help information.

Example output:

Usage: xml pyx <xml file> ...

Convert XML document to PYX format.

Options:
--help                        This help.
...

Conclusion:

The xml pyx command is a useful tool for converting XML documents to PYX format. Whether you need to convert a specific XML file, process XML data from stdin, or explore the available options, the xml pyx command provides a flexible and efficient solution. With the help of this article, you should now be able to use the xml pyx command effectively for various use cases.