Module schematron 

Schematron implementation (§27, §85 Phase 6).

ISO Schematron validation support. libxml2 implements a subset (Schematron 1.x style).

Phase 6: Complete — Schematron schema parsing, document validation, and C ABI exports are implemented.

UPSTREAM-PARITY

This module implements a functional ISO Schematron validator following libxml2’s observable behavior. The implementation covers:

• Full XML syntax for ISO Schematron schema definitions
• Assert (<assert>) and report (<report>) pattern validation
• XPath context matching via rule context attributes
• Abstract rules and extends inheritance
• Phases with <active> pattern references
• Namespace prefix mappings via <ns>
• Diagnostic messages with <name/> and <value-of/> expansion
• Basic <include> support
• <let>, <param>, <diagnostics>, <diagnostic>, <dir>, <span>, <emph>, <p>, <caption> parsing

Deviations from the ISO Schematron specification that match libxml2’s behavior are intentional.

Structs

SchematronDiagnostic

A Schematron diagnostic message definition.

SchematronPattern

A single Schematron pattern — an assert or report assertion.

SchematronPhase

A Schematron phase — selects a subset of patterns for validation.

SchematronRule

A Schematron rule — matches nodes via a context XPath expression.

SchematronSchema

A compiled ISO Schematron schema.

SchematronValidCtxt

Validation context for Schematron schema validation.

Enums

SchematronPatternType

The type of a Schematron pattern (assert or report).

Functions

schematron_parse

Parse a Schematron schema from an XML string.

schematron_parse_schema

Parse a Schematron schema from an XML string.

schematron_parse_schema_doc^⚠

Parse a Schematron schema from a parsed XML document.

schematron_validate_doc^⚠

Validate an XML document against a Schematron schema.

schematron_validate_doc_schema^⚠

Validate a document against a Schematron schema.

xmlSchematronFree^⚠

Free a Schematron schema.

xmlSchematronFreeParserCtxt^⚠

Free a Schematron parser context.

xmlSchematronFreeValidCtxt^⚠

Free a Schematron validation context.

xmlSchematronNewMemParserCtxt^⚠

Create a new Schematron parser context from a memory buffer.

xmlSchematronNewParserCtxt^⚠

Create a new Schematron parser context.

xmlSchematronNewValidCtxt^⚠

Create a new Schematron validation context.

xmlSchematronParse^⚠

Parse a Schematron schema.

xmlSchematronValidateDoc^⚠

Validate a document against a Schematron schema.