174 lines
7.3 KiB
XML
174 lines
7.3 KiB
XML
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<?xml version="1.0"?>
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<!--
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/******************************************************************************
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* $Id$
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*
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* Project: NITF Library
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* Purpose: Schema of description of NITF TREs
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* Author: Even Rouault, <even dot rouault at spatialys.com>
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*
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**********************************************************************
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* Copyright (c) 2011, Even Rouault
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*
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* SPDX-License-Identifier: MIT
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****************************************************************************/
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-->
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<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
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<xs:element name="root">
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<xs:complexType>
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<xs:sequence>
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<xs:element name="tres" minOccurs="0">
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<xs:complexType>
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<xs:sequence>
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<xs:element name="tre" type="treType" minOccurs="0" maxOccurs="unbounded"/>
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</xs:sequence>
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</xs:complexType>
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</xs:element>
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<xs:element name="des_list" minOccurs="0">
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<xs:complexType>
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<xs:sequence>
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<xs:element name="des" type="desType" minOccurs="0" maxOccurs="unbounded"/>
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</xs:sequence>
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</xs:complexType>
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</xs:element>
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</xs:sequence>
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</xs:complexType>
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</xs:element>
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<xs:complexType name="treType">
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<xs:group ref="itemType"/>
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<xs:attribute name="name" type="xs:string"/>
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<xs:attribute name="md_prefix" type="xs:string" use="optional"/>
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<xs:attribute name="length" type="positiveInteger" use="optional"/>
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<xs:attribute name="minlength" type="xs:integer" use="optional"/>
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<xs:attribute name="maxlength" type="xs:integer" use="optional"/>
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<xs:attribute name="location" type="xs:string" use="optional"/>
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</xs:complexType>
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<xs:complexType name="desType">
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<xs:sequence>
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<!-- definition of user-defined subheader fields of DES -->
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<xs:element name="subheader_fields" minOccurs="0">
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<xs:complexType>
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<xs:group ref="itemType"/>
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<xs:attribute name="name" type="xs:string"/>
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<xs:attribute name="length" type="positiveInteger" use="optional"/>
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<xs:attribute name="minlength" type="xs:integer" use="optional"/>
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<xs:attribute name="maxlength" type="xs:integer" use="optional"/>
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</xs:complexType>
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</xs:element>
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<!-- definition of fields in data section of DES -->
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<xs:element name="data_fields" minOccurs="0">
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<xs:complexType>
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<xs:group ref="itemType"/>
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<xs:attribute name="name" type="xs:string"/>
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<xs:attribute name="length" type="positiveInteger" use="optional"/>
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<xs:attribute name="minlength" type="xs:integer" use="optional"/>
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<xs:attribute name="maxlength" type="xs:integer" use="optional"/>
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</xs:complexType>
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</xs:element>
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</xs:sequence>
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<xs:attribute name="name" type="xs:string"/>
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</xs:complexType>
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<xs:group name="itemType">
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<xs:sequence>
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<xs:choice minOccurs="0" maxOccurs="unbounded">
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<xs:element name="field" type="fieldType">
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<xs:key name="att1">
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<xs:selector xpath="."/>
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<xs:field xpath="@length|@length_var"/>
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</xs:key>
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</xs:element>
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<xs:element name="loop" type="loopType">
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<xs:key name="att2">
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<xs:selector xpath="."/>
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<xs:field xpath="@counter|@iterations|@formula"/>
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</xs:key>
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</xs:element>
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<xs:element name="if" type="ifType"/>
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</xs:choice>
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<xs:element name="if_remaining_bytes" type="if_remaining_bytesType" minOccurs="0" maxOccurs="1"/>
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</xs:sequence>
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</xs:group>
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<xs:complexType name="loopType">
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<xs:group ref="itemType"/>
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<xs:attribute name="name"/>
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<!-- xs:choice -->
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<xs:attribute name="counter" type="xs:string"/>
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<xs:attribute name="iterations" type="positiveInteger"/>
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<xs:attribute name="formula">
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<xs:simpleType>
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<xs:restriction base="xs:string">
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<xs:enumeration value="(NPART+1)*(NPART)/2"/>
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<xs:enumeration value="(NUMOPG+1)*(NUMOPG)/2"/>
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<xs:enumeration value="(NUM_ADJ_PARM+1)*(NUM_ADJ_PARM)/2"/>
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<xs:enumeration value="(N1_CAL+1)*(N1_CAL)/2"/>
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<xs:enumeration value="(NUM_PARA+1)*(NUM_PARA)/2"/>
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<xs:enumeration value="NPAR*NPARO"/>
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<xs:enumeration value="NPLN-1"/>
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<xs:enumeration value="NXPTS*NYPTS"/>
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</xs:restriction>
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</xs:simpleType>
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</xs:attribute>
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<!-- /xs:choice -->
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<xs:attribute name="md_prefix" use="optional">
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<xs:simpleType>
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<xs:restriction base="xs:string">
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<xs:pattern value="([a-z]|[A-Z]|[0-9]|_)*(%[0-9]*d)?([a-z]|[A-Z]|[0-9]|_)*"/>
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</xs:restriction>
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</xs:simpleType>
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</xs:attribute>
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</xs:complexType>
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<xs:simpleType name="positiveInteger">
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<xs:restriction base="xs:integer">
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<xs:minInclusive value="1"/>
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</xs:restriction>
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</xs:simpleType>
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<xs:complexType name="ifType">
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<xs:group ref="itemType"/>
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<xs:attribute name="cond">
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<xs:simpleType>
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<xs:restriction base="xs:string">
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<xs:pattern value=".+([!]?=|:).*"/>
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</xs:restriction>
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</xs:simpleType>
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</xs:attribute>
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</xs:complexType>
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<xs:complexType name="if_remaining_bytesType">
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<xs:group ref="itemType"/>
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</xs:complexType>
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<xs:complexType name="fieldType">
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<!-- xs:choice -->
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<xs:attribute name="length" type="positiveInteger"/>
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<xs:attribute name="length_var" type="xs:string"/>
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<!-- /xs:choice -->
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<xs:attribute name="name" type="xs:string" use="optional"/>
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<xs:attribute name="longname" type="xs:string" use="optional"/>
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<xs:attribute name="type" use="optional">
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<xs:simpleType>
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<xs:restriction base="xs:string">
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<xs:enumeration value="string"/>
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<xs:enumeration value="integer"/>
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<xs:enumeration value="real"/>
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<xs:enumeration value="IEEE754_Float32_BigEndian"/>
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<xs:enumeration value="UnsignedInt_BigEndian"/>
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<xs:enumeration value="ISO8859-1"/>
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<xs:enumeration value="bitmask"/>
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</xs:restriction>
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</xs:simpleType>
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</xs:attribute>
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<xs:attribute name="unit" type="xs:string" use="optional"/>
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<xs:attribute name="minval" use="optional"/>
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<xs:attribute name="maxval" use="optional"/>
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<xs:attribute name="fixed_value" use="optional"/>
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<!--<xs:anyAttribute/>-->
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</xs:complexType>
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</xs:schema>
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