w3c.validator

function

Library: XML schema (OMXMLSCHEMA)
Import : omxmlschema.xmd

Returns: a markup sink ready to receive parsed markup for validation

Declaration

export dynamic markup sink function
   validator          against value schema-type     schema-instance
             case-insensitive value switch          is-case-insensitive optional initial { false }
                          via value entity-resolver resolver            optional
             report-errors-to value markup sink     errors              optional

Purpose

Use validator to validate an SGML or XML document instance against an XML schema. The schema must be specified as schema-instance argument to the function. The validator function sends all validation errors it finds into the errors sink if it is specified, or reports them in the log stream if the errors argument is not specified.

In case the document instance specifies its schema using the xsi:schemaLocation or xsi:noNamespaceSchemaLocation attribute, you may also need to specify the resolver argument to help resolve and compile the schema.

Example

This program validates sgml input against a RELAX NG schema, reports any errors and keeps going:

  import "omxmlschema.xmd" prefixed by w3c.
  
  
  define markup sink function
     error-reporter (value string sink s)
  as
     using output as s
     do markup-parse #current-input
        output "%c"
     done
  
  
  process
     local w3c.xml-schema-type example-schema
  
     set example-schema to w3c.compile-schema at "example-schema.xsd"
  
     using output as w3c.validator against example-schema report-errors-to error-reporter (#error)
     do xml-parse scan file "example-input.xml"
        output #content
     done

Related Topics

w3c.compile-schema

Other Library Functions