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RELAX NG
book

RELAX NG

by Eric van der Vlist
December 2003
Intermediate to advanced
506 pages
12h 26m
English
O'Reilly Media, Inc.
Content preview from RELAX NG

Name

xsd:hexBinary — Binary contents coded in hexadecimal

Synopsis

<xsd:simpleType name="hexBinary” id="hexBinary">
 <xsd:restriction base="xsd:anySimpleType">
 <xsd:whiteSpace value="collapse” fixed="true"/>
 </xsd:restriction>
</xsd:simpleType>

Derived from

xsd:anySimpleType

Primary

xsd:hexBinary

Known subtypes

None

Data parameters (facets)

enumeration, length, maxLength, minLength, pattern

Description

The value space of xsd:hexBinary is the set of all binary contents; its lexical space is a simple coding of each octet as its hexadecimal value.

Restrictions

This datatype shouldn’t be confused with another encoding called BinHex, which isn’t supported by the W3C XML Schema. Other popular binary text encodings (such as Quote Printable, uuXXcode, BinHex, aencode, or base85, to name a few) aren’t supported by the W3C XML Schema.

The expansion factor is high because each binary octet is coded as two characters (i.e., four octets if the document is encoded with UTF-16).

Example

A UTF-8 XML header such as:

"<?xml version="1.0" encoding="UTF-8"?>"

encoded is:

"3f3c6d78206c657673726f693d6e3122302e20226e656f636964676e223d54552d4622383e3f"
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Publisher Resources

ISBN: 0596004214Errata Page