Validate XML

Overview

The XML Validation Component verifies whether an input XML string is well-formed and conforms to certain validation rules. It supports options for boolean attributes and unpaired tags, ensuring that the XML structure meets expected standards.

Usage

This component takes an XML string as input and checks for syntax errors, invalid structures, and unsupported tags. If the XML is valid, it outputs a confirmation; otherwise, it returns error details.

Input Ports

Port	Description
in	Accepts an XML string for validation.

Input Properties

Property	Type	Description
xml	string	XML content to validate.
allowBooleanAttributes	boolean	If true, allows boolean attributes (e.g., <input checked>).
unpairedTags	string	Comma-separated list of tags that don't require closing pairs (e.g., <br>).

Output Ports

Port	Description
out	Provides validation results.

Output Properties

Property	Type	Description
isValid	boolean	true if XML is valid, false otherwise.
err.code	string	Error code if XML is invalid.
err.msg	string	Error message detailing the issue.
err.line	number	Line number where the error occurred.
err.col	number	Column number where the error occurred.

Processing Logic

1. Parse XML Input: Accepts an XML string and applies validation rules.

2. Apply Boolean Attribute Handling: Determines whether attributes can be boolean.

3. Check Unpaired Tags: Validates unpaired tags against the provided list.

4. Return Validation Result: If valid, sends isValid: true; if invalid, returns an error with details.

Notes

• Boolean Attribute Support: Useful for HTML-like XML where some attributes don’t require values.

• Custom Unpaired Tags: Enables validation for tags that don’t have closing counterparts.

• Detailed Error Reporting: Helps identify structural issues with precise error messages and locations.

This component ensures XML correctness, aiding in proper document parsing and integration workflows.